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1

Niagara Limestone  

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Niagara Limestone Niagara Limestone Nature Bulletin No. 282-A November 11, 1967 Forest Preserve District of Cook County Richard B. Ogilvie, President Roland F. Eisenbeis, Supt. of Conservation NIAGARA LIMESTONE Chicago stands at the crossroads of America -- the heart of the Middle West -- and one of the most important natural resources upon which it depends is the Niagara limestone beneath it. The bedrock in this region consists of layer upon layer of limestones, shales and sandstones stacked almost a half mile thick on top of the ancient granite, once molten, that formed the original surface of the earth before oceans formed and life appeared. The Niagara limestone is the uppermost layer here but few of us are aware of it because it is covered with soil and ground up rock -- glacial drift -- ranging from a few feet to a hundred or more feet in depth.

2

ls70  

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RESPONSE TO VIBRATIONAL DISTURBANCE RESPONSE TO VIBRATIONAL DISTURBANCE OF THE MAGNET FOUNDATION T. Khoe LS-70-Revised September 5, 1986 LS-70 - Revised Response to Vibrational Disturbance of the Magnet Foundation Assumptions: 1. Soil under the concrete slab of uniform density and elasticity (constant o and constant modulus of elasticity E). 2. Constant frictional damping. 3. No coupling between vertical and horizontal motion. Vertica 1 Motion Hooke's law: z - Zo Tension Force - - - ... ---=-- "" --- z E AE o A = area of the slab Force: = gravity acceleration dz - frictional force * C dt - driving force (external and/or internal) ... f cos wt M K Ml + A(L - zo)p Ml x mass of concrete slab + magnets L ~ distance of slab to bedrock (assumed constant) p a density of soil Substitution of the force F in Hooke's law gives

3

LS-89  

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9 9 April 1987 VIBRATION SURVEY OF IPNS BEAM LINE MAGNETS AND EXPERIMENT HALL J. A. Jendrzejczyk, R. K. Smith, and M. W. Wambsganss LS-89 April 1987 VIBRATION SURVEY OF IPNS BEAM LINE MAGNETS AND EXPERIMENT HALL by J. A. Jendrzejczyk, R. K. Smith, and M. W. Wambsganss 1.0 INTRODUCTION Successful operation of the 7-GeV Advanced Photon Source (APS) requires that vibration (self-induced or transmitted via the floor/support system) of the quadrupole magnets be eliminated or otherwise controlled within allowable limits. The acceptance criterion is based on vertical emittance growth. In particular, it is required that l!.€ __ z < 10% € (1) z Low frequency « 20 Hz) vibrations lead to position and photon beam steering which can be corrected for with feedback systems using steering magnets.

4

LS-65  

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5 5 July 17, 1986 Comparison of LINDA and POISSON of a Dipole Field Calculation S. H. Kim 7/17/86 LS-65 Comparison of LINDA and POISSON of a Dipole Field Calculation S. H. Kim Two-dimensional magnetic field computations of a dipole magnet using LINDA and POISSON are compared. The purpose is not to distinguish the basic differences between the two codes, but to compare the results for different mesh sizes in a given problem region. The magnet geometry chosen for the calculation is the 6-GeV injector synchrotron H-type dipole magnet. Figure 1 is the geometry used for LINDA runs. The outside air region is required to satisfy the geometrical constraints of the input parameters in LINDA. LINDA divides the problem space into uniform rectangular meshes. The

5

LS-146  

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rjb rjb LS-146 03/20/90 A PRELIMINARY ANALYSIS OF THE APS CROTCH DESIGN (*) Ao 110 Khounsary Advanced Photon Source Argonne National Laboratory, Argonne, IL 60439 March 1990 The submitted manuscript has been authored by a contractor of the U. S. Government under contract No. W-31·109-ENG·38. According!y I the U. S. Government retains a nonexclusive, royaltyMfree license to publish or reproduce the published form of this contribution, or allow others to do so, for U. S. Government purposes. *This work supported by the UB. Department of Energy, BES-Materials Sciences, under contract no. W-31-109-ENG-38 A Preliminary Analysis of the APS Crotch Design Ali M. Khounsary Advanced Photon Source, Argonne National Laboratory Argonne, IL 60439 December 1989

6

LS-58  

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8 8 April 22, 1986 AN UNREINFORCED VACUUM CHAMBER FOR THE 6-GeV INJECTOR SYNCHROTRON W. F. Praeg (4/22/86) LS-58 An Unreinforced Vacuum Chamber for the 6-GeV Injector Synchrotron w. F. Praeg Summary The elliptical vacuum chamber of the injector synchrotron, as described in the Conceptual Design Report (CDR), ANL-86-8, is made from stainless steel tubes reinforced by thin ribs. A simpler design is proposed and analyzed which not only reduces the cost by 74%, but also is easier to install, bake, and pump. Introduction The elliptical vacuum chamber for the 6 GeV injector synchrotron described in the CDR ANL-86-8 is made from 0.3-mm thick stainless steel (SS), reinforced by ribs spaced 20-mm apart. Its design is based on a chamber developed for the 9 GeV synchrotron DESY II which operates with a I2.5-Hz

7

LS-132  

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2 2 Kei th Symon November 1988 ANALYSIS OF THE WALKINSHAW DIFFERENCE RESONANCE In preparation for the Aladdin experiments, I will give an analytic treatment of the Walkinshaw difference resonance. The treatment nearly parallels that in LS-l3l for the third-integral resonance. I. Analysis of the Resonance The Hami 1 tonian in the neighborhood of the Wa lkinshaw resonance Vx - 2 vy = m (1.1) can be written in terms of angle-action variables in the form h V J +v J +S(2J )1/2(2J )sin(y -2y -m&+ç) xx yy x y x y +aJ 2+2bJ J +cJ 2 x x Y Y (1. 2) We first transform to resonant coordinates via the generating function F(Ji,J2,yx,yy,8) Ji(y -2y -m8+ç)+J2Y x y y (1.3 ) which gives Yl = Y - 2y - m8 + ç x Y Y2 yy (1.4 ) J x J 1 Jy = J 2 - 2J 1 (i.5 ) J 1 = J x J 2 J + 2J Y x (1. 6) 2 The resonant hamiltonian is

8

Preparing limestone for burning  

Science Journals Connector (OSTI)

Classification of limestone before burning can be done by the screening method ... enables us to use the heat of the waste gases from the calcination units.

V. I. Goncharov; T. P. Kirichenko

9

Introduction LS-156  

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LS-156 LS-156 10/15/90 Design of Kicker/Bumper Magnet and PFN for PAR By JU \VANG Al'ID GERALD J.VOLK* The submitted manuscript has been authored by a contractor of the U. S. Government under contract No. W~31·1 09-ENG·38. Accordingly, the U. S. Government retains a nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U. S. Government purposes. Three fast pulsed kicker!bumper magnets are required in the positron accumulator ring (PAR) for the purpose of beam injection and/or extraction at 450 MeV. According to the Conceptual Design Report (CDR), these three magnets have identical specifications and are expected to produce identical magnetic fields. Therefore, they will have the same design. Each

10

LS-13 K. Thompson  

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K. Thompson February 19, 1985 Second Designs and Cost Estimates for Storage Ring Dipoles and Quadrupoles When the first designs for these magnets, summarized in LS-12, were reviewed, it was decided to change two of the design criteria. These new criteria are: 1. Retain the original aperture dimensions but increase the maximum operating energy by 25%; and 2. Permit ALL insertion device straight sections to be able to accept either type of device. The result of No. 1 above is to increase the flux density in the yoke at the maximum operating point and increase the coil size for the dipole magnet. The quadrupole yokes were increased in size to keep the flux density less than 15kG but the coils were not changed. When applying criteria 2. above, five different quadrupoles immediately

11

LS-EC(1/8/86) LS-48  

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EC(1/8/86) LS-48 EC(1/8/86) LS-48 January 8, 1986 Edwin A. Crosbie Location of the Injector Synchrotron Relations to the 6 GeV Light Source Ring Figures 1 and 2 show the desired location and orientation of the injector synchrotron relative to the center of the injection straight section of the Light Source ring. The large crosses show the locations of the centers of the long straight sections of the synchrotron and the injection straight section, respectively. The injector synchrotron straight section makes an angle of 19.47 0 relative to the storage ring injection straight section. The total distance from the beginning of the linac to the center of the injector straight section is shown as 80 m. It nmkes an angle of 3 0 with respect to the injector synchrotron straight section.

12

Microsoft Word - ls306.doc  

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ANL/APS/LS-306 ANL/APS/LS-306 Canted-Undulator Front-End Exit-Mask Flow-Induced Vibration Measurements Jeff T. Collins, Charles L. Doose, John N. Attig Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, U.S.A. and Michael M. Baehl Summer Student Participant Department of Mechanical Engineering, University of Illinois, Champaign, IL 61801, U.S.A. Abstract All of the high-heat-load critical components in the new canted-undulator front-end (CU FE) design use wire-coil inserts inside of the cooling channels to significantly enhance heat transfer. Wire-coil inserts have replaced the copper-mesh inserts used in previous front-end high-heat-load critical-component designs. The exit mask, the most downstream component in the CU FE line

13

Microsoft Word - ls279.doc  

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LS Note 279 LS Note 279 Retuning the APS Storage Ring for Better Chromaticity Correction Yong-Chul Chae, Edwin A. Crosbie Advanced Photon Source Accelerator System Division July 9, 1999 Summary When the APS storage ring was retuned to provide smaller β y values in the insertion straight sections, it was necessary to increase the vertical tune by at least two units. Since the design values for the horizontal and vertical tunes are 35.22 and 16.30, respectively, this put the tunes dangerously close to the sextupole 2ν y -ν x coupling resonance. The large injection horizontal oscillations could couple to the vertical plane and exceed the 5-mm vertical apertures that exist in some of the insertion straight sections. To avoid this resonance, the vertical tune was raised beyond the resonance to

14

LS-  

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3 3 December 6, 1985 T. Khoe EstiBate of the Radio Frequency Properties of the Vacuue Chamber 1. Cutoff frequencies The lowest cutoff frequency is that of the TE waves. A very approximate calculation of the cutoff frequency can be made by considering region II as a capacitance and regions I and III as inductances (see Fig. 1). I Fig. 1. Vacuum Chamber Cross Section Region I: beam chamber: cross section area: AI * 25 cm 2 corresponding circumference: SI * 20 cm Region II: gap g = 1 cm, width w = 10 cm cutoff frequency: 15 GHz m 4 x 10 4 fO Region III: cross section area: AlII ~ 40 cm 2 corresponding circumference: SIll - 36 cm 2 NEG strips: each W NEG - 2 cm wide III . W£6 - For a length t 1l0ArIl L Ilr .. 9. 2 of the vacuum chamber one has Crr .. -

15

LS-  

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7 7 The submitted manuscript has been authore by a contractor of the U. S. Governmer' under contract No. W·31·109-ENG·31 Accordingly, the U. S. Government retains nonexclusive. royalty-free license to publis or reproduce the published form of th contribution. or allow others to do so, fc U. S. Government purposes. VV. Chou and J. Bridges Jan 9, 1989 (Rev. September 4, 1990) 3-D Computer Simulations of EM Fields in the APS Vacuum Chamber - Part 1: Frequency-Domain Analysis The vacuum chamber proposed for the storage ring of the 7-GeV Advanced Photon Source (APS) basically consists of two parts: the beam chamber and the antechamber, connected to each other by a narrow gap, as shown in Fig. 1. A sector of I-meter-long chamber with closed end plates, to which are attached the l-inch-diameter beampipes

16

LS-  

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50 50 G. K. SHENOY February, 1986 ANGULAR DISTRIBUTION OF POWER FROM AN UNDULATOR AND A WIGGLER ON A 6-GeV STORAGE RING There are two fundamental reasons to have a full knowledge of the angular distribution of power from an insertion device: 1. To evaluate the heat-load distribution on the first optical element in a beamline. 2. To estimate the total radiated power which will impinge on the walls of an insertion device. This is important to ensure needed cooling of the insertion device walls. The photodesorption is another closely related phenomenon determined by the exposure of the insertion device walls to the radiated power and of consequence to the successful operation of the storage ring. We have discussed the angular distribution of power from a wiggler source

17

LS-  

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2 G. K. Shenoy P. J. Viccaro Sept. 25, 1985 ENERGY AND ANGULAR DISTRIBUTIONS OF RADIATION POWER FROM BENDING MAGNET AND WIGGLER SOURCES AT A 6-GeV RING Summary: In order to design...

18

LS-  

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9 9 Eigenmodes in Two Simplified Chamber Structures Studied for Spurious Microwaves in the APS Storage Ring Beam Chamber Xiang Sun and Glenn Decker April 30, 2003 Abstract The vertical readback errors are one order of magnitude greater than the horizontal ones in the APS storage ring beam chamber. To learn and solve this problem, we simulate the eigenmodes in two chamber structures, which are simplified from the APS storage ring beam chamber, and find their dependence on the variation of the chamber structures. These two structures are introduced as the solutions to separate and then restrain the spurious microwave modes by using a metal short block and a plate inside the chamber. The short block can shift and separate the frequencies of every mode

19

LS-  

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5 5 The submitted manuscript has been author€- by a contractor of the U. S. Governme: under contract No. W-31-'09-ENG-3 Accordingly, the U. S. Government rets'lnS nonexclusive. royalty-free license to public or reproduce the published form of th contribution, or allow others to do so, f. U. S. Government purposes. W. Chou Jan 20, 1989 (Rev. September 4, 1990) 3-D Computer Simulations of EM Fields in the APS Vacuum Chamber - Part 2: Time-Domain Analysis In Ref. [1], we analyze the RF modes of the 1-meter-long sector of the APS vacuum chamber in the frequency-domain. This note is a parallel analysis in the time-domain. There are quite a few measurements completed on this 1-meter-long sector. [2] In or- der to understand these experimental results, in particular, the cause of the strong peak

20

LS-Kim LS-54 S. H. Kim  

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Kim LS-54 Kim LS-54 S. H. Kim 1/28/86 Distribution of the Bending Magnet Radiation This note describes the distribution of the synchrotron radiation from the bending magnets (BM) in storage ring of the 6 GeV Light Source. The total radiated power, PT(W), from one BM is given by 2 2 3 P T = 1.263 E B IL = 10.44 x 10 W, (1) where E (position beam energy) = 6.6 GeV, B (magnetic field) = 0.88 T, I (beam current) = 100 mAt and L (BM length) = 2.45 m are used in this note. The radiation power density is approximately expressed as where F(Y~) 0.4375 e 2 W/ (mrad) , 1 (Y~ )2 - 2" 0.608 (2) The distribution of the radiation in the vertical direction in Eq. (2) is ~ - 0.1 mrad. Since there are 64 BM's in the storage ring, the maximum bending angle by one BM in the horizontal direction is

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Microsoft Word - LS Power Comments.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Comments on Behalf of LS Power Associates, L.P. on the Proposed Transmission Infrastructure Program Pursuant to the Federal Register Notice in Federal Register Vol. 74, No. 41, LS Power Associates, L.P. ("LS Power") submits the following comments on the Proposed Transmission Infrastructure Program ("TIP") by the Western Area Power Administration ("Western") to implement section 402 of the American Recovery and Reinvestment Act of 2009 ("Recovery Act"). 1. Introduction LS Power is an independent power generation and transmission group with a proven track record of successful development activities, operations management and commercial execution. LS Power has been involved in the development, construction, or operations of over 20,000 MW of power generation

22

First light for LS-CAT  

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First light for LS-CAT First light for LS-CAT At 10:24 a.m. on June 27, 2006, two x-ray beams from dual canted undulators drilled twin channels into a block of acrylic. The Life Sciences Collaborative Access Team ( LS-CAT ) marked its first step toward emerging as the newest structural biology sector at the U.S. Department of Energy's Advanced Photon Source (APS) at Argonne National Laboratory. The LS-CAT is a member-based collaborative access team that includes the University of Michigan, Michigan State University, the Van Andel Research Institute, Wayne State University, Northwestern University, the University of Wisconsin at Madison, Vanderbilt University Medical Center, and the University of Illinois at Urbana-Champaign. The LS-CAT will operate four experimental stations for x-ray crystallography using two insertion

23

LS9 Inc | Open Energy Information  

Open Energy Info (EERE)

LS9 Inc LS9 Inc Jump to: navigation, search Name LS9 Inc Address 100 Kimball Way Place South San Francisco, California Zip 94080 Sector Biofuels Product Uses synthetic biology to develop biofuels from traditional feedstocks Website http://www.ls9.com/ Coordinates 37.651095°, -122.3926° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.651095,"lon":-122.3926,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

24

Kinematic hardening of a porous limestone  

Science Journals Connector (OSTI)

A concept for a kinematic hardening yield surface in stress space for Cordova Cream limestone (Austin Chalk) developed by Celle and Cheatham (1981) has been improved using Ziegler's modification of Prager's ha...

J. B. Cheatham Jr.; M. B. Allen; C. C. Celle

25

SN54147, SN54148, SN54LS147, SN54LS148 SN74147, SN74148 (TIM9907), SN74LS147, SN74LS148  

E-Print Network (OSTI)

OFFICE BOX 655303 · DALLAS, TEXAS 75265 '147, 'LS147 D Encode 10-Line Decimal to 4-Line BCD D (Octal) D Applications Include: - n-Bit Encoding - Code Converters and Generators 3 2 1 20 19 9 10 11 12 devices encode nine data lines to four-line (8-4-2-1) BCD. The implied decimal zero condition requires

Ravikumar, B.

26

Limestone, Oklahoma: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Limestone, Oklahoma: Energy Resources Limestone, Oklahoma: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 36.3159295°, -95.7491501° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.3159295,"lon":-95.7491501,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

27

FAST AND LS TTL DATA BCD TO 7-SEGMENT  

E-Print Network (OSTI)

for the LS48. The circuit accepts 4-bit binary-coded-decimal (BCD) and, depending on the state5-1 FAST AND LS TTL DATA BCD TO 7-SEGMENT DECODER The SN54/74LS48 is a BCD to 7-Segment Decoder are connected in pairs to make BCD data and its complement available to the seven decoding AND-OR-INVERT gates

Glashausser, Charles

28

U. S. Government purposes. LS-253  

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W·31·10!rENG·38. W·31·10!rENG·38. Accordingly. the U. S. Government retains a nonexclusive, royalty-free license to publish Or reproduce the published form of this contribution, or allow others to do so, for U. S. Government purposes. LS-253 A Shimming Technique for Improvement of the Spectral Performance of APS Undulator A I. Vasserman Experimental Facilities Division, APS January 9, 1996 Advanced Photon Source Argonne National Laboratory A shimming technique for improvement of the spectral performance of APS Undulator A 1. Vasserman Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 TABLE OF CONTENTS 1. Introduction 2. The shimming technique: calculations and experimental results 3. Conclusion 4 Acknowledgments 5 References 1. Introduction

29

Mathematical Modeling on Open Limestone Channel  

E-Print Network (OSTI)

Acid mine drainage (AMD) is the outflow of acidic water from metal mines or coal mines. When exposed to air and water, metal sulfides from the deposits of the mines are oxidized and produce acid, metal ions and sulfate, which lower the pH value of the water. An open limestone channel (OLC) is a passive and low cost way to neutralize AMD. The dissolution of calcium into the water increases the pH value of the solution. A differential equation model is numerically solved to predict the variation of concentration of each species in the OLC solution. The diffusion of Calcium due to iron precipitates is modeled by a linear equation. The results give the variation of pH value and the concentration of Calcium.

Bandstra, Joel; Wu, Naiyi

2014-01-01T23:59:59.000Z

30

Global Orbit Corrections Keith Symon LS-I0l  

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Orbit Corrections Keith Symon LS-I0l November 1987 K. Symon I. Introduction. There are various reasons for preferring local (e.g., three-bump) orbit correction methods to global...

31

L&S Deans' Office Purchase Request Form  

E-Print Network (OSTI)

L&S Deans' Office Purchase Request Form poses a risk to the University. The University has does not need to be by the original requestor of this purchase FOR OFFICE USE ONLY Approver: Cardholder://businessservices.berkeley.edu/HtmFiles/RestrictItems.htm) 2. One form may be used for multiple purchases from a single vendor. 3. Submit form to Blu

Mofrad, Mohammad R. K.

32

Limestone and Ash Storage Silos and Lime Preparation Equipment, Part  

NLE Websites -- All DOE Office Websites (Extended Search)

Limestone and Ash Storage Silos and Lime Preparation Equipment, Part Limestone and Ash Storage Silos and Lime Preparation Equipment, Part of the System to Inject Limestone Sorbent for SO, Control. Nucla, CO Nucla...continued Before being repowered, the plant consisted of three 12 MWe coal stoker- fired units built in 1959, which were taken out of service in 1984 due to low efficiency and high fuel cost. Antici- pating a need for additional power in the early 1990s. and after review of many power generation alternatives, CUEA started constmction of the re- powered Nucla CFB plant in Novem- ber 1984 and completed the project in May 1987. The original boilers were replaced with a new Fympower Corp. CFB bailer, a new high pressure 74 MWe steam turbine generator was installed, the three original 12 MWe steam turbines were

33

Curie temperature analyses of Upper Jurassic and Lower Cretaceous pelagic limestones  

Science Journals Connector (OSTI)

......strongly ferromagnetic minerals, IRM acquisition and...weakly ferromagnetic minerals such as goethite and...thermomagnetic analysis, pelagic lime- stones 1 Introduction...magnetite, other magnetic minerals including haematite...sandy limestone gray-green marly limestone "Ammonitico......

Bruno Galbrun; Robert F. Butler

1986-09-01T23:59:59.000Z

34

RACETRACK AT ANL S. L. Kramer LS-67  

NLE Websites -- All DOE Office Websites (Extended Search)

RACETRACK AT ANL RACETRACK AT ANL S. L. Kramer LS-67 April, 1986 1 LS-67 S. Kramer RACETRACK AT ANL Thanks to the assistance and patience of Albin Wrulich at LBL, the most recent version of the accelerator tracking code RACETRACK is now opera- tional at Argonne on ANLHEP. Access to this program can be obtained by run- ning the program HEP2:[AR.KRAMER.RACETRAC]RACE.EXE. An input file FOROOS and output file FOR006 are all that is required. A sample data file DEMO.DAT (Table I) and an instruction file RACETRACK. GUIDE are included in this directory. This program has been tested in a mode which should agree with PATRICIA-84.9 for the "ideal" CDR lattice. Figure 1 shows the comparison of the dynamic aperture for both programs. The op/p = 0 apertures agree exactly,

35

Low frequency radio spectrum and spectral turnover of LS 5039  

E-Print Network (OSTI)

LS 5039, a possible black hole x-ray binary, was recently observed with Giant Meterwave Radio Telescope. The observed spectrum presented here shows that the spectrum is inverted at the low frequency. When combined with the archival data with orbital phase similar to the present observations, it shows a clear indication of a spectral turnover. The combined data are fitted with a broken power-law and the break frequency signifies a possible spectral turnover of the spectrum around 964 MHz. Truly simultaneous observations in radio wavelength covering a wide range of frequencies are required to fix the spectrum and the spectral turn over which will play a crucial role in developing a deeper understanding of the radio emitting jet in LS 5039.

Sagar Godambe; Subir Bhattacharyya; Nilay Bhatt; Manojendu Choudhury

2008-07-15T23:59:59.000Z

36

Microsoft Word - LS-ESH-0052rev 2  

NLE Websites -- All DOE Office Websites (Extended Search)

Subject: Devalving of compressed gas cylinders Number: LS-ESH-0052 Revision: 2 Effective: 08/05/2008 Page 1 of 1 Prepared By: Keith Klaus Approved By: John Aloi Approved By: Andrew Ackerman *Approval signatures on file with master copy. 1. Purpose The purpose of this procedure is to provide guidance on safely removing valves (devalving) from empty, inert compressed gas cylinders. Sudden releases of energy have been associated with

37

Microsoft Word - LS-ESH-0051-Rev1.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Subject: Operation of Nano-material Hood in Room 1-128 Number: LS-ESH-0051 Revision: 1 Effective: 10/01/2007 Page 1 of 1 Keith Klaus John Aloi Syed Khalid Prepared By: Approved By: Approved By: *Approval signatures on file with master copy. 1. Purpose The purpose of this procedure is to provide guidance on the use of the HEPA filtered laboratory bench top hoods for nanomaterial use in the National Synchrotron Light Source. The SBMS

38

Pulsar model of the high energy phenomenology of LS 5039  

E-Print Network (OSTI)

Under the assumption that LS 5039 is a system composed by a pulsar rotating around an O6.5V star in a $\\sim 3.9$ day orbit, we present the results of a theoretical modeling of the high energy phenomenology observed by the High Energy Stereoscopy Array (H.E.S.S.). This model (including detailed account of the system geometry, Klein-Nishina inverse Compton, $\\gamma$-$\\gamma$ absorption, and cascading) is able to describe well the rich observed phenomenology found in the system at all timescales, both flux and spectrum-wise.

Agnieszka Sierpowska-Bartosik; Diego F. Torres

2007-10-04T23:59:59.000Z

39

N"I. L-S- Rad. Mat. DU  

Office of Legacy Management (LM)

N"I. L-S- N"I. L-S- Rad. Mat. DU DU (UF4) Enr. U. Norm. U Thorium 3/4 Ti Alloy Subtotals Commercial/ (1958-1971) TOTALS EXHIBIT 3 RADIOACTIVE MATERIAL PROCESSED AT NL-ALBANY PLANT, 1958-1982: GROSS SUMMARY OF INFORMATION FROM NUCLEAR MATERIAL TRANSACTION REPORTS (DOE/NRC Form 741 and Predecessor Forms) Material Net Weight (Pounds) DOE-Owned Canadian Supplied L/ Gov.-owned 5,660,914.3 0 2,469,268.2 100,686.l 7.7 57,358.Z 336,754 38,090.4 0 1,813 0 8,328,130.2 336,761.7 .8,328,130.2 336,761.7 2,603,763 11,268,654.9 77% Commercial (1971-1982) 1,300,339 235,636 0 0 0 1,535,975 Total 6,961,252.3 2,704,904.2 100,693.8 394,112.z 38,090.4 1,813 10,200,866.9 Gov. as % Of Total 21 81% 91 100 100 100 1,067,788 1,067,788 Z L/ Includes DOE, AEC, and ERDA. 2.1

40

The origin of brucite in hydrothermally altered limestone near Devil Peak, Nevada.  

E-Print Network (OSTI)

??Open-space brucite was identified in veins crosscutting hydrothermally altered limestone near the Devil Peak rhyolite plug in southern Nevada. The brucite occurs with serpentine, calcite, (more)

Knupp, Rhonda L.

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Protective effect of endolithic fungal hyphae on oolitic limestone buildings Nicolas Concha-Lozano a  

E-Print Network (OSTI)

limestone from four quarries and eight monuments exposed on various environmental conditions focusing molding. Study of weathering forms on old quarries indicates that lichens colonization (Verrucaria

Boyer, Edmond

42

Reservoir Characterization and Enhanced Oil Recovery Potential in Middle Devonian Dundee Limestone Reservoirs, Michigan Basin, USA.  

E-Print Network (OSTI)

?? Middle Devonian Rogers City and subjacent Dundee Limestone formations have combined oil production in excess of 375 MMBO. In general, hydrocarbon production occurs in (more)

Abduslam, Abrahim

2012-01-01T23:59:59.000Z

43

Mercury Control Demonstration Projects Cover Photos: * Top: Limestone Power Plant  

NLE Websites -- All DOE Office Websites (Extended Search)

6 FEBRUARY 2008 6 FEBRUARY 2008 Mercury Control Demonstration Projects Cover Photos: * Top: Limestone Power Plant * Bottom left: AES Greenidge Power Plant * Bottom right: Presque Isle Power Plant A report on three projects conducted under separate cooperative agreements between the U.S. Department of Energy and: * Consol Energy * Pegasus Technologies * We Energies  Mercury Control Demonstration Projects Executive Summary ............................................................................ 4 Background ......................................................................................... 5 Mercury Removal Projects ................................................................ 7 TOXECON(tm) Retrofit For Mercury and Multi-Pollutant Control on Three 90-MW Coal-Fired Boilers ........................................7

44

LENGTH OF BEAMLINES AND WIDTH OF THE LS-37  

NLE Websites -- All DOE Office Websites (Extended Search)

LENGTH OF BEAMLINES AND WIDTH OF THE LENGTH OF BEAMLINES AND WIDTH OF THE LS-37 November 10, 1985 G. K. Shenoy G. S. Knapp EXPERIMENTAL HALL AT A 6-GeV SYNCHROTRON FACILITY The width of the experimental hall at a 6-GeV facility is closely related to the length of the beamlines. This note addresses this aspect in some de tail. In general, no two beamlines will have identical lengths or the placement of various optical elements. Hence fixing the beamline lengths prior to their assignment to specific experiments is difficult. In spite of this fact, a few general conclusions are made. 1. At least 25m of all the beamlines will be behind the shielding wall. Within this length many beamline components can be accommodated as shown in Fig. 1. 2. For most beamlines on bending magnets (BM), the first optical element will

45

Hydrochemical Impacts of Limestone Rock Mining Ghinwa M. Naja & Rosanna Rivero &  

E-Print Network (OSTI)

. 2002). Even though the environmental impacts of ore and coal mining have been adequately investigated, the impact of limestone rock mining has not been well studied. Water Air Soil Pollut DOI 10.1007/s11270-mail: mnaja@evergladesfoundation.org #12;Quarrying of limestone aggregate currently repre- sents in the USA

Demers, Nora Egan

46

Autonomous Remote Crack Displacement Monitoring of a Residence Near a Limestone  

E-Print Network (OSTI)

Autonomous Remote Crack Displacement Monitoring of a Residence Near a Limestone Quarry, Naples a limestone quarry. The object is to quantitatively compare crack re- sponse to blast-induced ground motion for construction and raw materials. For instance, neighbors of road aggregate quarries often perceive

47

Naam: mw. prof. dr. L.S. de Vries Leeropdracht Neonatale neurologie (bijzondere leerstoel vanwege de Vereniging van Ouders  

E-Print Network (OSTI)

ultrasound: a reappraisal. Lancet 1985; ii:137-140. de Vries LS, van Haastert IC, Rademaker KJ, Koopman C

Utrecht, Universiteit

48

HYBRID UNDULATORS AND WIGGLERS LS-18 S.H. Kim  

NLE Websites -- All DOE Office Websites (Extended Search)

HYBRID UNDULATORS AND WIGGLERS HYBRID UNDULATORS AND WIGGLERS LS-18 S.H. Kim March 22, 1985 FOR. THE ALADDIN SYNCHROTRON LIGHT SOURCE In this note, design parameters of two hybrid undulators and one hybrid wiggler are considered with a minimum gap of 1.25 cm. The length of the insertion devices considered here is 3.5 m. The magnetic field along the axis of the hybrid devices of samarium-cobalt permanent magnets and vanadium per- mendur pole tips is expressed as: -f- (5.47 - 1.80 g/A u ) B 3.3 x 0.90 e u where Au and g are the undulator period and gap, and a filling or assembly factor of 90% is assumed. Figure 1 shows the deflection parameter K vs gap for three insertion devices (see the names). The parameters used in this note are marked as " 1 circles in Fig. * In Figs. 2 and 3, the first few harmonics of the spectral brilliance of

49

MEAN TEMPERATURE RISE IN A TARGET Keith Symon LS-99  

NLE Websites -- All DOE Office Websites (Extended Search)

KS (7 -24-87) KS (7 -24-87) MEAN TEMPERATURE RISE IN A TARGET Keith Symon LS-99 July 1987 The equation which determines the equilibrium temperature distribution in a cylindrically symmetrical target, if we deposit an average power J(r) inside radius r, is ) = dT J(r -2'ITrtK Or' where K is the thermal conductivity and t is the length of the target. The temperature is then T = T - 1 J J(r)dr o 2'ITKt 0 r If we deposit power uniformly in a cylinder of radius a, then where J o is the total T J 0 r2 I a 2 , r .;; a , J (r) = J o r ) a, power del i vered. The temperature is J r2 T - 0 0 2 , r .;; a, 4'ITda = T - J o (1 + 2 tn ria), r ) a. 0 4'ITKt then If the target boundary at r = b is held at a temperature Tb' then the temperature rise at the center is (1) (2 ) (3)

50

The accretion regime of LS 5039: 3-D SPH simulations  

E-Print Network (OSTI)

LS 5039 is a TeV gamma-ray binary with extended radio emission. It consists of a compact object in the mildly eccentric (e=0.35), 3.9-day orbit around a massive O star. The nature of the compact object is not yet established. In this paper, assuming that the compact object is a black hole, we study the accretion of O-star wind by the black hole, by performing three-dimensional Smoothed Particle Hydrodynamics (SPH) simulations. In order to roughly emulate the effect of the stellar radiation effectively canceling the stellar gravity, we assume that the O star's gravity does not exert on the wind. The wind particles are ejected with half the observed terminal velocity in a narrow range of azimuthal and vertical angles toward the black hole, in order to emulate the wind significantly slower than the terminal speed, and optimize the resolution and computational efficiency of simulations. We find that the mass-accretion rate closely follows the classical Bondi-Hoyle-Littleton accretion rate, which is of the order of 10^{16}g/s around periastron. The accretion rate at this level would provide jets enough power to produce the gamma-rays detected by HESS. Since the accretion peak occurs near the periastron passage, we need a strong gamma-ray absorption around periastron in order for the microquasar scenario to be consistent with the observed orbital modulation of the TeV gamma-ray flux.

A. T. Okazaki; G. E. Romero; S. P. Owocki

2008-11-12T23:59:59.000Z

51

Ethanol Conversion on Cyclic (MO3)3 (M = Mo, W) Clusters. | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Conversion on Cyclic (MO3)3 (M Mo, W) Clusters. Ethanol Conversion on Cyclic (MO3)3 (M Mo, W) Clusters. Abstract: Oxides of molybdenum and tungsten are an important class of...

52

Investigation of elastic weakening in limestone and sandstone samples from moisture adsorption  

Science Journals Connector (OSTI)

......Tittmann (2008) showed that adhesion forces on quartz, mica and calcite minerals...limestones and sandstones shows that the fundamental difference between their respective elastic...Rock Physics and Phase Relations, A Handbook of Physical Constants, AGU Refrence......

L. Pimienta; J. Fortin; Y. Guguen

2014-01-01T23:59:59.000Z

53

On the Dynamic Fragmentation of two Limestones using Edge-on Impact Tests  

E-Print Network (OSTI)

, a crinoidal limestone and the so-called "blanche de Beaucaire." These rocks are extracted from quarries. The mining and quarrying industries aim at controlling the block size distributio

54

US WNC MO Site Consumption  

U.S. Energy Information Administration (EIA) Indexed Site

WNC MO WNC MO Site Consumption million Btu $0 $500 $1,000 $1,500 $2,000 $2,500 US WNC MO Expenditures dollars ALL ENERGY average per household (excl. transportation) 0 3,000 6,000 9,000 12,000 15,000 US WNC MO Site Consumption kilowatthours $0 $300 $600 $900 $1,200 $1,500 US WNC MO Expenditures dollars ELECTRICITY ONLY average per household * Missouri households consume an average of 100 million Btu per year, 12% more than the U.S. average. * Average household energy costs in Missouri are slightly less than the national average, primarily due to historically lower residential electricity prices in the state. * Missouri homes are typically larger than homes in other states and are more likely to be attached or detached single-family housing units.

55

MoS2  

NLE Websites -- All DOE Office Websites (Extended Search)

4 4 Myriam Perez De la Rosa1, Gilles Berhault2, Apurva Mehta3, and Russell R. Chianelli1 1University of Texas at El Paso, Materials Research Technology Institute, El Paso, TX 2Institut de Recherches sur la Catalyse, CNRS, Villeurbanne cedex, France 3Stanford Synchrotron Radiation Laboratory, Menlo Park, CA Figure 1: MoS2 layered structure. As the world economy continues to expand the demand for petroleum based fuel increases and the price of these fuels rises. The rising price of fuel has another consequence: refiners tend to purchase cheaper fuels of poorer quality. These poor quality fuels contain increasing amounts of sulfur and other pollutants leading to a decline in air quality worldwide. A recent New York Times article described the major impact a growing Chinese economy

56

Enhancement of direct sulfation of limestone by Na2CO3 addition  

Science Journals Connector (OSTI)

For an oxy-fuel circulating fluidized bed combustion system, the limestone calcination is normally prevented due to excessive CO2 partial pressures and the limestone is subject to a direct sulfation reaction. The enhancement of the direct sulfation of limestone by Na2CO3 was investigated under high CO2 partial pressure in a thermogravimetric apparatus (TGA) and scanning electron microscope (SEM) analysis method. A commercial limestone with a mean size of 18.8?m was used. Experimental results indicate that the incorporation of Na+ ions in solid product CaSO4 lattice structures results in formation of more extrinsic point defects in the crystal lattices of CaSO4 and a significantly increased solid-state diffusivity/mobility in the solid product. So the direct sulfation of Na2CO3-doped limestone shows higher rate and higher degree of conversion in the later stage of sulfation, in comparison with the direct sulfation of original limestone. The reaction changes from diffusional control to chemical reaction control in the presence of Na2CO3 because of the effect of foreign ions on accelerating the solid-state diffusion.

Chuanmin Chen; Ye Zhuang; Chunbo Wang

2009-01-01T23:59:59.000Z

57

Stratigraphy and diagenesis of the Mississippian Lodgepole Limestone, Williston Basin, North Dakota  

SciTech Connect

Stratigraphic correlation of the Lodgepole Limestone (Bottineau Interval) indicates a sequence of three clinoform-shaped wedges that filled in the early Williston Basin. To date four productive 100m thick mounds have been discovered in the Lodgepole Limestone at Dickinson Field. The mounds seem to have nucleated at the toe of slope of the first highstand system tract and were subsequently buried by the second highstand systems tract. By isopaching each of the systems tracts one can predict were other mounds might have nucleated. Burial depth of the Bakken Shale-Lodgepole Limestone contact grade from 0.6 km at the edge of the Williston Basin to 3.4 km in the center. With increased depth the basal Lodgepole Limestone shows three phases of dolomitization, which are: small clear early dolomite; later iron rich fracture filling saddle dolomite and a later iron rich dolomite that seems to follow stylolites. Pre-oil migration mineralization of the overlying limestone include minor amounts of: anhydrite, pyrite, iron poor sphalerite, late iron rich sphalerite, chalcopyrite and celestite.

Grover, P.W. (Texas A M Univ., College Station, TX (United States))

1996-01-01T23:59:59.000Z

58

Stratigraphy and diagenesis of the Mississippian Lodgepole Limestone, Williston Basin, North Dakota  

SciTech Connect

Stratigraphic correlation of the Lodgepole Limestone (Bottineau Interval) indicates a sequence of three clinoform-shaped wedges that filled in the early Williston Basin. To date four productive 100m thick mounds have been discovered in the Lodgepole Limestone at Dickinson Field. The mounds seem to have nucleated at the toe of slope of the first highstand system tract and were subsequently buried by the second highstand systems tract. By isopaching each of the systems tracts one can predict were other mounds might have nucleated. Burial depth of the Bakken Shale-Lodgepole Limestone contact grade from 0.6 km at the edge of the Williston Basin to 3.4 km in the center. With increased depth the basal Lodgepole Limestone shows three phases of dolomitization, which are: small clear early dolomite; later iron rich fracture filling saddle dolomite and a later iron rich dolomite that seems to follow stylolites. Pre-oil migration mineralization of the overlying limestone include minor amounts of: anhydrite, pyrite, iron poor sphalerite, late iron rich sphalerite, chalcopyrite and celestite.

Grover, P.W. [Texas A& M Univ., College Station, TX (United States)

1996-12-31T23:59:59.000Z

59

Accumulation of surface-applied agricultural limestone in acid soils of east Texas  

E-Print Network (OSTI)

, Georgetown is considered a 20 Table 2. Elemental analysis of agricultural limestone sam les ( ercenta e basis) . T Source %Ca %N %Si %Fe %Nn Georgetown Hugo Idabel 34. 6a 37. 4b 35. 2a 3. 0a 1. 0a 0. 2a 0. 00a 0. 3b 0. 4b 0. 2a 0. 05b 0. 4b 1. 7c 0.... Wilding (Member) Marvin W. Rowe (Member) E. C. A. Run (Head of Department) August 1987 ABSTRACT Accumulation of Surface-applied Agricultural Limestone in Acid Soils of East Texas. (August 1987) Earl Raymond Allen, B. Stf University of Illinois...

Allen, Earl Raymond

2012-06-07T23:59:59.000Z

60

Landmarks in OpenLS --A Data Structure for Cognitive Ergonomic Route Directions  

E-Print Network (OSTI)

Landmarks in OpenLS -- A Data Structure for Cognitive Ergonomic Route Directions Stefan Hansen1 ergonomic route directions in this article. They try to reduce the cognitive load for the travelers ergonomic route directions. In M. Raubal, H. Miller, A. U. Frank, & M. F. Goodchild (Eds.), GIScience

Bremen, Universität

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Phosphorus limitation in the Mississippi River Plume (MRP) and Louisiana shelf (LS) during May 1992  

E-Print Network (OSTI)

and the dissolved N/P are, nevertheless, the most frequently cited evidence for N-limitation in the MRP and LS region. Large rivers can significantly affect to biological processes in the coastal zone and some polluted rivers now carry dissolved phosphorus loads...

Kim, Jin-Seok

1996-01-01T23:59:59.000Z

62

Faculty Travel Grant Program Terms Revised: LS 11-06-12 Page 1  

E-Print Network (OSTI)

Faculty Travel Grant Program Terms Revised: LS 11-06-12 Page 1 Office of Research Services Phone: (250) 807 9412 UBC Okanagan Campus Internal Grants Program Terms FACULTY TRAVEL GRANT Value: Up to $1 the deadline will be moved to 4 pm of the first working day that follows. Faculty Travel Grant Details Purpose

Michelson, David G.

63

Internal Research Grant Checklist Student Revised: LS 03-20-14  

E-Print Network (OSTI)

Internal Research Grant ­ Checklist ­ Student Revised: LS 03-20-14 Office of Research Services Phone: 250 807 9412 InternalResearchGrant STUDENTCHECKLIST (to accompany your grant application) This application is a: Graduate Student Travel Grant Undergraduate Student Travel Grant Undergraduate Student

Michelson, David G.

64

The HITRAN2012 molecular spectroscopic database L.S. Rothman a,n  

E-Print Network (OSTI)

The HITRAN2012 molecular spectroscopic database L.S. Rothman a,n , I.E. Gordon a , Y. Babikov b , A i n f o Article history: Received 6 April 2013 Received in revised form 2 July 2013 Accepted 4 July 2013 Available online 12 July 2013 Keywords: HITRAN Spectroscopic database a b s t r a c t This paper

Le Roy, Robert J.

65

Louis Stokes Colorado Alliance for Minority Participation (LS CO-AMP)  

E-Print Network (OSTI)

Louis Stokes Colorado Alliance for Minority Participation (LS CO-AMP) Funded by The National Fort Collins, CO 80523-1301 Fort Collins, CO 80523-1301 #12;Louis Stokes Colorado Alliance for Minority semester 2006) Student's Signature Date Please submit to: Omnia El-Hakim, The Colorado PEAKS Alliance

Mountziaris, T. J.

66

Concrete international /january 2010 35 Portland limestone cement (PLC) is produced by  

E-Print Network (OSTI)

Concrete international /january 2010 35 Portland limestone cement (PLC) is produced by blending demonstration of PLC concrete in the late-fall construction of a parking lot at a ready mixed concrete plant near Gatineau, QC, Canada. The performance of the plastic and hardened concretes produced with PLC

67

Lead, zinc, and strontium in limestone cap rock from Tatum salt dome, Mississippi  

SciTech Connect

Limestone cap rock at Tatum salt dome, Mississippi, contains disseminated pyrite, sphalerite, and galena, and disseminated to massive amounts of strontianite (SrCO/sub 3/) and celestite (SrSO/sub 4/). Sulfide minerals are locally present in bitumen-rich areas of the upper, massive portion of the limestone cap rock, whereas strontium minerals are disseminated throughout this zone. However, sulfide and strontium minerals are most abundant in the lower banded portion of the limestone cap rock, which consists of alternating subhorizontal light and dark-colored bands. The dark bands are composed of calcite of variable grain size, sulfides, quartz, dolomite, albite, and up to 1% bitumen that apparently formed by the biodegradation of crude oil. Lighter bands are composed of variable amounts of coarsely crystalline, euhedral calcite, strontianite, and celestite resulting in strontium (Sr) contents of up to 30% locally. Banded limestone cap rock at Tatum dome formed at the top of the actively dissolving anhydrite zone by a combination of sulfate reduction and oxidation of liquid hydrocarbons by bacteria to cause the precipitation of calcite and sulfide minerals and the accumulation of insoluble residue from the anhydrite (quartz, albite, dolomite). Lead and zinc in the sulfide minerals could have been derived from the dissolving anhydrite, but the abundance of Sr minerals present requires an external source. Present-day oil field brines in central Mississippi contain up to 3000 ppm Sr, and basin brines of similar composition apparently contributed Sr to the cap-rock environment during formation.

Saunders, J.A.

1988-09-01T23:59:59.000Z

68

Remanent Magnetism in Jurassic Red Limestones and Radiolarites from the Alps  

Science Journals Connector (OSTI)

......magnetism of ferromagnetic minerals by chemical reactions...represented by limestones-red lime- stones of various types...The basal portion is green to grey. The upper contact...covered I Radiolarite, green-gray Shale, greenish-gray...potentially ferromagnetic mineral present. The haematite......

Robert B. Hargraves; Alfred G. Fischer

1959-03-01T23:59:59.000Z

69

Distribution of authigenic albites in a limestone succession of the Helvetic Domain, eastern Switzerland  

E-Print Network (OSTI)

exclusively in limestones with a carbonate content higher than 80 wt-%. A diagenetic or hydrothermal origin contenant plus de 80 %m de carbonate. La possibilité d'une origine diagéné- tique ou hydrothermale est to a thin section scale, and we discuss a possible diagenetic or hydrothermal origin of these albites. 2

Gilli, Adrian

70

Modeling Surface Waves from Aboveground and Underground Explosions in Alluvium and Limestone  

Science Journals Connector (OSTI)

...reinke@dtra.mil The May 2012 HUMBLE REDWOOD III (HRIII) experiment series...alluvium conducted as part of the HUMBLE REDWOOD I and II (HRI and HRII) experiments...limestone as part of the May 2012 HUMBLE REDWOOD III (HRIII) experiment series...

Jessie L. Bonner; David R. Russell; Robert E. Reinke

71

Compaction and Sintering of Mo Powders  

SciTech Connect

To support the development of Mo-99 production by NorthStar Medical Technologies, LLC, Mo metal powders were evaluated for compaction and sintering characteristics as they relate to Mo-100 accelerator target disk fabrication. Powders having a natural isotope distribution and enriched Mo-100 powder were examined. Various powder characteristics are shown to have an effect on both the compaction and sintering behavior. Natural Mo powders could be cold pressed directly to >90% density. All of the powders, including the Mo-100 samples, could be sintered after cold pressing to >90% density. As an example, a compacted Mo-100 disk reached 89.7% density (9.52 g/cm3) after sintering at 1000 C for 1 hr. in flowing Ar/4%H2. Higher sintering temperatures were required for other powder samples. The relationships between processing conditions and the resulting densities of consolidated Mo disks will be presented.

Nunn, Stephen D [ORNL] [ORNL; Kiggans, Jim [ORNL] [ORNL; Bryan, Chris [ORNL] [ORNL

2013-01-01T23:59:59.000Z

72

DOE - Office of Legacy Management -- St Louis Airport - MO 01  

Office of Legacy Management (LM)

Airport - MO 01 Airport - MO 01 FUSRAP Considered Sites St. Louis Airport, MO Alternate Name(s): Airport Site St. Louis Airport Storage Site (SLAPS) Former Robertson Storage Area Robertson Airport MO.01-1 MO.01-2 Location: Brown Road, Robertson, Missouri MO.01-2 Historical Operations: Stored uranium process residues containing uranium, radium, and thorium for the MED and AEC. MO.01-2 MO.01-3 MO.01-4 Eligibility Determination: Eligible MO.01-1 MO.01-7 Radiological Survey(s): Assessment Surveys MO.01-4 MO.01-5 Site Status: Cleanup in progress by U.S. Army Corps of Engineers. MO.01-6 USACE Website Long-term Care Requirements: To be determined upon completion. Also see Documents Related to St. Louis Airport, MO MO.01-1 - DOE Memorandum; Coffman to LaGrone; Subject: Authorization

73

L U. S. Government purposes. LS-lS2 K Symon  

NLE Websites -- All DOE Office Websites (Extended Search)

Jr;. ted manuscript has been authored Jr;. ted manuscript has been authored contractor of the U. S. Government * contract No. W-31-109-ENG-38. ,dingly, the U. S. Government retains a Jexclusive, royalty·free license to publish ... ( reproduce the published form of this f contribution, or allow others to do so, for L U. S. Government purposes. LS-lS2 K Symon June 28, 1990 Analysis of a ThirduOrder Sum Resonance It is worth considering an experiment on a sum resonance. I will give an analytic treatment of a third-order sum resonance. The treatment parallels that in LS-132 for the Walkinshaw difference resonance. Although the algebra is essentially the same as for the difference resonance, the sum resonance appears to have a richer structure. 1. Analysis of the Resonance. The Hamiltonian in the neighborhood of the sum resonance

74

ESTIMATION OF TOTAL RADIATIVE POWER FROM THE 6-GEV RING LS-24  

NLE Websites -- All DOE Office Websites (Extended Search)

TOTAL RADIATIVE POWER TOTAL RADIATIVE POWER FROM THE 6-GEV RING LS-24 G. K. Shenoy APRIL 18,1985 Here we make an estimation of the total power radiated from a positron trajectory through the bending magnets, undulators and wigglers. Bending Magnets The power P B per each bending magnet in the ring is given by (1) where E = 6 GeV B = field average over the magnet length = 0.67 T I = stored current = 0.1 A L = trajectory in each dipole magnet = 2.95 m (Ref. LS-12) This gives P B = 6021 watts. Since there are 64 such dipoles in the ring, the total power radiated from dipoles is T P B (watts) = P B (watts) x 64 = 385 kwatts 2 Undulators The total power radiated from a sinosoidal undulator is either given by P u (watts) (2) or by (3) where N = number of undulator periods of length AO (em), K is the deflection

75

LS-I03 G. K Shenoy P. J. Viccaro E. E. Alp  

NLE Websites -- All DOE Office Websites (Extended Search)

LS-I03 LS-I03 G. K Shenoy P. J. Viccaro E. E. Alp January 1988 ~ .ru. . PEP ~ ~ uim DII' oncs~ I NTRODUCTI ON Various magnetic optics have been considered for PEP storage ring which can be used depending on the operational circumstances. The storage ring for example is operated around 14.5 GeV when high energy investigations are car- ried out in which the positron and electron beams collide. This is referred to as the colliding-beam optics (CBO) mode. The low-emittance optics (lEO) has been tested at 8 GeV whi cn is very useful for numerous synchrotron radi &_ tion studies. In addition, a new lattice with damping wigglers has been proposed which can provide very low emittance. This is referred to as very low emittance optics (VlEO). These lattices also provide straight sections

76

ls1 mardyn: The massively parallel molecular dynamics code for large systems  

E-Print Network (OSTI)

The molecular dynamics simulation code ls1 mardyn is presented. It is a highly scalable code, optimized for massively parallel execution on supercomputing architectures, and currently holds the world record for the largest molecular simulation with over four trillion particles. It enables the application of pair potentials to length and time scales which were previously out of scope for molecular dynamics simulation. With an efficient dynamic load balancing scheme, it delivers high scalability even for challenging heterogeneous configurations. Presently, multi-center rigid potential models based on Lennard-Jones sites, point charges and higher-order polarities are supported. Due to its modular design, ls1 mardyn can be extended to new physical models, methods, and algorithms, allowing future users to tailor it to suit their respective needs. Possible applications include scenarios with complex geometries, e.g. for fluids at interfaces, as well as non-equilibrium molecular dynamics simulation of heat and mass transfer.

Christoph Niethammer; Stefan Becker; Martin Bernreuther; Martin Buchholz; Wolfgang Eckhardt; Alexander Heinecke; Stephan Werth; Hans-Joachim Bungartz; Colin W. Glass; Hans Hasse; Jadran Vrabec; Martin Horsch

2014-08-20T23:59:59.000Z

77

The HITRAN 2008 molecular spectroscopic database L.S. Rothman a,, I.E. Gordon a  

E-Print Network (OSTI)

The HITRAN 2008 molecular spectroscopic database L.S. Rothman a,?, I.E. Gordon a , A. Barbe b , D'Ae´ronomie Spatiale de Belgique, B-1180 Brussels, Belgium a r t i c l e i n f o Article history: Received 21 December database Molecular spectroscopy Molecular absorption a b s t r a c t This paper describes the status

Chance, Kelly

78

DNA structure(s) recognized and bound by large subunit of Replication Factor C (ls RFC) in Drosophila melanogaster  

E-Print Network (OSTI)

of lsRFC protein purified from the maltose affinity column with protein in the crude extract . . 22 8. DNA sequence of synthetic oligonucleotides used to determine the binding affinity of Drosophila lsRFC protein . . 24 9. Relative binding affinity.... . . . . . . . . . . 15. The cutting pattern of "D" series of DNA structures by piperidine 33 after Os04/pyridine modification 34 16. Southwestern assay comparing relative binding affinity of MBP-IsRFC purified protein to DNA structures of "Y" series and "D" series...

Gaur, Lalit Kumar

1995-01-01T23:59:59.000Z

79

Lithologic and structural controls of limestone-hosted Pb-Zn-Ag mineralization in Chihuahua, Mexico  

SciTech Connect

The state of Chihuahua contains some of the most important limestone-hosted ore deposits in Mexico. The best example are Santa Eulalia and Naica which together have produced 53 million tons or ore averaging 7.7% Pb, 6.4% Zn, and 280 g/ton Ag. These deposits occur as mantos and chimneys often accompanied by calc-silicates. Among the most critical questions in this type of deposit is the control that the limestone-host exerts on the mineralizing process. Here the authors present the first detailed data on the stratigraphic and lithologic character of the limestone-hosts at Naica and Santa Eulalia. All ore at Naica and Santa Eulalia is hosted by micrites, biomicrites and biosparites indicative of generally quiet marine deposition. The authors work suggests that the western edge of the this trough might be a low angle, east dipping ramp which extends below the Sierra Madre Occidental. The primary permeability of the limestone that hosts Naica and Santa Eulalia is in the micro to nanodarcy range. The effective permeability has been augmented by 3 or 4 stages of micro-fracturing. Most of the ore is controlled by these fractures and by felsic dikes, which in cases are mostly endoskarn. Stylolites also appear to have exerted a control on the mineralizing process. Numerous instances of alteration and recrystallization confined to one side of a horizontal stylolite have been noted. At Santa Eulalia, horizontal stylolites have controlled the emplacement of massive sulfide mantos, suggesting that the mineralizing process was rather passive.

Lofquist, D.J.; Ruiz, J.

1985-01-01T23:59:59.000Z

80

Characterisation of hydraulic fractures in limestones using X-ray microtomography  

E-Print Network (OSTI)

Hydraulic tension fractures were produced in porous limestones using a specially designed hydraulic cell. The 3D geometry of the samples was imaged using X-ray computed microtomography before and after fracturation. Using these data, it was possible to estimate the permeability tensor of the core samples, extract the path of the rupture and compare it to the heterogeneities initially present in the rock.

Renard, Francois; Desrues, Jacques; Plougonven, Erwan; Ougier-Simonin, Audrey

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

LS-102  

NLE Websites -- All DOE Office Websites (Extended Search)

2 2 November 1987 K. Symon Preliminary Thoughts on the Aladdin Experimnts Keith Symon I suggest three sets of experiments for comparing tracking results with experimental data on the dYl1amic aperture in Aladdin, as follows. (See the tune diagram, Fig. 1.) 1. Aperture determined by a single dominant resonance. When the aperture is determined by a single dominant nonlinear resonance, it can be calculated analytically, as well as by numerical tracking. The experimental aperture should therefore agree with the predicted one, if we know what we are doing. I suggest the third integral resonance nz = 7 1/3. We should choose nx as far from other resonances as possible, say nx = 7.08. The resonance 3nz = 22 is driven by a sextupole term with a cos(22 r) dependence on azimuth,

82

LS-8  

NLE Websites -- All DOE Office Websites (Extended Search)

s. H. Kim January 101 1985 Calculation of the Undulator Radiation Spectra S.H. Kim Argonne National Laboratory The frequency spectral and angular distribution of undulator radiation has been calculated for the case of a spatially periodic sinusoidal magnetic field. The results are expressed in terms of an integral form and also in a series of Bessel functions. 1. Introduction The properties of synchrotron radiations from undulators have been 1-4 investigated by several authors * Different authors have different expressions for the frequency spectral and angular distribution of the radiation. The purpose of this report is to clarify different notations and expressions of the radiation by deriving the spectra in detail. Some notations used in this report are following:

83

LS-61  

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1 1 April 28, 1986 SITE EXCAVATION STUDY A. N. Lowing ARGONNE NATIONAL LABORATORY To: Y. Cho From: A. N. Lowing ~~ Subject: Site Excavation Study INTRA-LABORATORY MEMO ARGONNE NAn HIGH £NE.~:~llAaO~l\TCF?Y Apri 1 28, 1986 Y. CH6HYSICS MAY 11986 Project Manager, HEP-LSP PFS-FPE As a method of identifying a site location for the GXS based upon least- excavation vs. zero percent fill material as a criteria, four separate sites each having three separate floor elevations were investigated. The attached study data indicates that site "C" with floor elevation at 742-~, appears to be the most cost-effective site. Selection of site "C" will require relocating the utility service building from the position shown in the Conceptual Design Report, which could

84

LS-108  

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8 8 April 1988 A FRONT END DESIGN FOR THE ADVANCED PHOTON SOURCE P. J. Viccaro 1 . INTRODUCTION X-ray sources on next generation low emittance/high brilliance synchrotrons such as the 7-GeV Advanced Photon Source (APS) (1) have unique properties which directly affect the design of the front end of the beam line. The most striking of these are the large peak photon power densities expected for the insertion device (ID) x-ray sources. Undulators. for example. can have highly peaked photon power distributions with central densi ties approaching 300 kW/mrad~. Large power distributions can also be expected for some of the high critical energy wigglers. Front end components which intercept the photon beam produced by IDs must be able to absorb and safety dissipate the heat loads associated with their power distributions.

85

LS-22  

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2 2 April 16, 1985 UNDULATORS ON A 6-GeV RING GENERAL CONSIDERATIONS G. K. SHENOY UNDULATORS ON A 6-GeV RING - GENERAL CONSIDERATIONS Summary It is argued that the power delivered may not be a serious limitation for the use of radiation from a conventional undulator on a 6-GeV storage ring. A conservative approach in deciding the undulator parameters is discussed. Parameters for a spectrum of undulators to cover the photon energy range from 1 to 20 keV are presented in tabular form. Introduction In designing undulators on a 6-GeV storage ring , the primary consideration will be the power that such devices will deliver. The beam line design should be capable of handling large powers that such undulators will deliver. Specifically, in a beam line in the front end we have masks (fixed and

86

LS-29  

NLE Websites -- All DOE Office Websites (Extended Search)

s. H. Kim 7/19/85 Nouideal Undulator Spect.ra The undulator spectra may have harmonic broadening due to the angular divergence and energy spread of the electron beam in the storage ~ing, varia- tion of the undulator spatial period, and nonideal magnetic field distribution between the gap of the undulator. In most cases the energy spread of the electron beam seems to be rather small. The correction of the nonuniformity of the undulator period may be easier compared to that of the magnetic field distribution in an undulator. This note calculates the undulator spectra under the following assump- tions. The electron beam has divergences in the horizontal and vertical directions with an overall Gaussian distribution of the divergence. The undulator period is constant and magnetic field distribution is sinusoidal

87

LS-115  

NLE Websites -- All DOE Office Websites (Extended Search)

5 5 w. Chou and Y. Jin July 1988 IMEDANCE STUDIES - PART 4: TH APS IMEDANCE BUDGET This note will wrap up the numerical results that were obtained in our calculations of the wake potentials, the loss factors, and the impedances for a variety of structures in the APS storage ring. It consists of five sections and one appendix. Section 1 is an introduction. Section 2 summarizes the hand calculations. The computer calculations are the subject of Section 3. Section 4 discusses several tests in our numerical methods. Section 5 presents the APS impedance budget, along with some discussion. The appendix contains the figures of the structures, the longitudinal/transverse wake potentials and the real/imaginary part of the impedances of various sorts of geometries that have been included in the budget.

88

ls4  

NLE Websites -- All DOE Office Websites (Extended Search)

Nov. 8, 1984 R. Martin High Brightness Lattices I had not realized until I heard Keith Symon describe the situation at Aladdin on Thursday, November 1 just how low a current limit it had. I now submit to you that there is no way an electron machine designed for 1A could be limited to 1-2 mA, especially after such a long tuneup time, by misalignments, poor diagnostics, low injection energy, nor the low injector current. The aperture couldn't be wrong by more than a factor of 2-4 since the low current lifetime due to gas scattering is the calculated value. Other machines with low injection energy get hundreds of mA. A microtron current with 1 mA output should still allow accumulation of 50-100 mA in the ring. Low injection current then isn't the problem. I found the rapid change of lifetime with current

89

LS-74  

NLE Websites -- All DOE Office Websites (Extended Search)

4 Augus t 5, 1986 CORNELL UNDULATORSUMMARY OF DISCUSSIONS (August 4, 1986 meeting at Argonne National Laboratory) Gopa1 Shenoy and Jim Viccaro A. Undu1ator Design from ANL Based...

90

ls3  

NLE Websites -- All DOE Office Websites (Extended Search)

the beam at this point, be + 30 10 *8 550 mm. One can, however, expect users to demand greater stability than this. Although ground motion can be as large as 1mm at some...

91

LS-76  

NLE Websites -- All DOE Office Websites (Extended Search)

No leaks were detected on any of the cooling channels tested. The next tests were for f1 at ness J bow and t wi st. For these measurements the extrusions were placed on a 12...

92

ls5  

NLE Websites -- All DOE Office Websites (Extended Search)

structure, tune parameters using TV cameras, photodiodes and other optical or optoelectronic devices. 1. Advantages: Synchrotron radiation can be directed outside the primary...

93

LS-79  

NLE Websites -- All DOE Office Websites (Extended Search)

9 January 6, 1987 BUILDING-SOIL VIBRATION COUPLING by J. A. Jendrzejczyk, R. K. Smith Materials and Components Technology Division BUILDING-SOIL VIBRATION COUPLING by J. A....

94

The stratigraphy and environment of deposition of productive Wilcox clays in west central Freestone and southeast Limestone Counties, Texas  

E-Print Network (OSTI)

THE STRATIGRAPHY AND ENVIRONMENT OF DEPOSITION OF PRODUCTIVE WILCOX CLAYS IN WEST CENTRAL FREESTONE AND SOUTHEAST LIMESTONE COUNTIES, TEXAS A Thesis by STEPHANIE ANNE SHELVEY Submitted to the Graduate College of Texas ARM University... in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1986 Major Subject: Geology THE STRATIGRAPHY AND ENVIRONMENT OF DEPOSITION OF PRODUCTIVE WILCOX CLAYS IN WEST CENTRAL FREESTONE AND SOUTHEAST LIMESTONE COUNTIES, TEXAS A...

Shelvey, Stephanie Anne

2012-06-07T23:59:59.000Z

95

DOE - Office of Legacy Management -- Latty Avenue Site - MO 04  

NLE Websites -- All DOE Office Websites (Extended Search)

Latty Avenue Site - MO 04 Latty Avenue Site - MO 04 FUSRAP Considered Sites Latty Avenue Site, MO Alternate Name(s): Futura Coatings Futura Chemical Company Facility Hazelwood Interim Storage Site (HISS) Former Cotter Site, Latty Avenue Properties Contemporary Metals Corp. Continental Mining and Milling MO.04-1 MO.04-2 MO.04-5 MO.04-6 MO.06-8 MO.06-11 Location: 9200 Latty Avenue, Hazelwood, Missouri MO.04-1 Historical Operations: Received, stored, and processed uranium residues for the AEC. Storage and processing were licensed by the AEC and NRC and resulted in contamination of uranium and thorium. MO.04-5 MO.04-6 Eligibility Determination: Eligible MO.04-3 MO.04-4 Radiological Survey(s): Assessment Surveys MO.04-2 MO.04-7 MO.04-8 MO.04-9 MO.04-10 MO.04-11 Site Status: Cleanup in progress by U.S. Army Corps of Engineers. MO.04-12

96

Prompt ?-ray spectroscopy of the Mo104 and Mo108 fission fragments  

Science Journals Connector (OSTI)

The level structures of the neutron-rich Mo104 and Mo108 nuclei have been investigated by observing prompt ? rays emitted in the spontaneous fission of Cm248 with the EUROGAM spectrometer. Levels with spins up to 12? have been observed and ? branching obtained. The data can be satisfactorily described when Mo104,108 are considered as axially symmetric nuclei: in Mo104, rotational bands based on the ground state, the one-phonon and the two-phonon ?-vibrational states and a quasiparticle state have been observed, whereas in Mo108 the information is limited to the yrast band and the one phonon ? band. 1996 The American Physical Society.

A. Guessous; N. Schulz; M. Bentaleb; E. Lubkiewicz; J. L. Durell; C. J. Pearson; W. R. Phillips; J. A. Shannon; W. Urban; B. J. Varley; I. Ahmad; C. J. Lister; L. R. Morss; K. L. Nash; C. W. Williams; S. Khazrouni

1996-03-01T23:59:59.000Z

97

NO. REV. MO. ~ssessment of Two Year  

E-Print Network (OSTI)

) 200 hours operation of LSPE Central Electronics, 90 hours on timers, 1 hour for thermal battery Operations ·· Thermal/Power Prediction vs Time ·· Qualification Levels #12;MO. ltiV. MO. Assessment of Two and items powered by battery. Is with all functions intact and in- cludes all 8 EPA's (active mode) · 2

Rathbun, Julie A.

98

DOE - Office of Legacy Management -- West Lake Landfill - MO...  

Office of Legacy Management (LM)

Lake Landfill - MO 05 FUSRAP Considered Sites Site: West Lake Landfill (MO.05) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition:...

99

Das Mischungsverhalten von Nb3Sn mit Mo3Si, Mo3Ge und Nb3Ge  

Science Journals Connector (OSTI)

Mittels homogenisierter Sinter-und Schmelzproben wird die Bildung von lckenlosen Mischreihen zwischen Nb3Sn mit Mo3Si, Mo3Ge und Nb3Ge nachgewiesen.

H. Holleck; F. Benesovsky; H. Nowotny

1962-01-01T23:59:59.000Z

100

ITP Mining: Energy and Environmental Profile of the U.S. Mining Industry: Chapter 9: Limestone and Crushed Rock  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9 9 Limestone and Crushed Rock Crushed rock is one of the most accessible natural resources and a major basic raw material. It is used in construction, agriculture, and other industries using complex chemical and metallurgical processes. Despite the low value of its basic products, the crushed rock industry is a major contributor to and an indicator of the economic well being of the nation. Forms Of Crushed Rock About three-quarters of the crushed stone production is limestone and dolomite, followed by, in descending order of tonnage: granite, traprock, sandstone and quartzite, miscellaneous stone, marble, slate, calcareous marl, shell, volcanic cinder and scoria. Limestone, one of the largest produced crushed rock, is a sedimentary rock composed

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Category:Kansas City, MO | Open Energy Information  

Open Energy Info (EERE)

MO MO Jump to: navigation, search Go Back to PV Economics By Location Media in category "Kansas City, MO" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Kansas City MO Union Electric Co.png SVFullServiceRestauran... 74 KB SVHospital Kansas City MO Union Electric Co.png SVHospital Kansas City... 66 KB SVLargeHotel Kansas City MO Union Electric Co.png SVLargeHotel Kansas Ci... 66 KB SVLargeOffice Kansas City MO Union Electric Co.png SVLargeOffice Kansas C... 65 KB SVMediumOffice Kansas City MO Union Electric Co.png SVMediumOffice Kansas ... 65 KB SVMidriseApartment Kansas City MO Union Electric Co.png SVMidriseApartment Kan... 74 KB SVOutPatient Kansas City MO Union Electric Co.png SVOutPatient Kansas Ci... 66 KB SVPrimarySchool Kansas City MO Union Electric Co.png

102

Effects of graphene on MoO2-MoS2 composite as anode material for lithium-ion batteries  

Science Journals Connector (OSTI)

The electrochemical properties of MoO2-MoS2/graphene electrode were compared with those of MoO2-MoS2, bulk MoS2, and graphene electrode. MoO2-MoS2 composite was prepared by a hydrothermal reaction of molybdenum (...

Moon-Jin Hwang; Kwang Man Kim; Kwang-Sun Ryu

2014-07-01T23:59:59.000Z

103

6 GeV LIGHT SOURCE PROJECT COST ESTIMATING PROCEDURE LS-34  

NLE Websites -- All DOE Office Websites (Extended Search)

GeV LIGHT SOURCE PROJECT GeV LIGHT SOURCE PROJECT COST ESTIMATING PROCEDURE LS-34 October 23, 1985 YC/AVR To maintain uniformity in estimating the cost requirements of the various components of the 6 GeV Light Source, the following procedure will be used by all the task groups. The procedure uses a Work Breakdown Structure (WBS) to break down the project into manageable, easy to estimate, components. The project is first broken down into major tasks or categories. Then each major division is continuously subdivided until the desired level of detail is achieved. This can be shown best by using the example of the WBS of the Aladdin Upgrade Project, excerpts of which are included in Appendix A. As shown in the example, the project is first divided into: 1.1 Project Management and Administration

104

VIBRATIONS OF THE MAGNET-PEDESTAL SYSTEM LS-77 W. Chou  

NLE Websites -- All DOE Office Websites (Extended Search)

VIBRATIONS OF THE MAGNET-PEDESTAL SYSTEM VIBRATIONS OF THE MAGNET-PEDESTAL SYSTEM LS-77 W. Chou January, 1987 This note provides an analysis of the vibrations of the magnet- pedestal system of the Argonne Advanced Photon Source. It consists of two parts and an appendix. Part I is a discussion ~f how to calculate the normal modes of the system. In Part II, the normal mode method is employed to study the response of the system to various kinds of excitations, in particular, to the ground motion. Some technical information is included in the appendix to make this note self-consistent. The dipole system is chosen to be an example to carryon explicit calculations and the main numerical results are summarized in Tables 1 and 2 and Figures 2 and 4. 2 Part I Normal Modes of the Magnet-Pedestal System

105

LS-4~ GROUND VIBRATION MEASUREMENTS NEAR THE SITE OF THE PROPOSED  

NLE Websites -- All DOE Office Websites (Extended Search)

~ ~ GROUND VIBRATION MEASUREMENTS NEAR THE SITE OF THE PROPOSED ANL LIGHT SYNCHROTRON RADIATION FACILITY by D.L. McCown and R. Bowen Geoscience and Engineering Energy and Environmental Systems Division January 23, 1986 SUMMARY LS-4'l D. L. McCown/R. Bowen January 23, 1986 GROmm VIBRATION MEASUREMENTS REAR. 'l'IIE SITE OF 'l'IIE PROPOSED ANL LIGHT SYNCHROTRON RADIATION FACILITY Ground surface vibration measurements were conducted near the site of the proposed Light Source Radiation Facility in December, 1985 and early January, 1986 during "busy" and "quiet" periods of site activity. The preliminary analysis of the measurements indicates that ground vibrations (in the vertical) observed at the site are usually at frequencies below 800 Hz.

106

Thermophysical Properties of U-10MO Alloy  

SciTech Connect

This report provides an overview of thermophysical properties of unirradiated uranium alloyed with ten weight percent molybdenum (U 10Mo), with particular focus on those material properties needed for modeling of new fuels for HPRRs (High Performance Research Reactors). The report contains both historical data available in the literature on U-10Mo, as well as more recent results conducted by the Global Threat Reduction Initiative fuel development program. The main use of the report is intended as a standard U-10Mo alloy properties reference for reactor models and simulations.

A. M. Phillips; G. S. Mickum; D. E. Burkes

2010-11-01T23:59:59.000Z

107

Final test results for the Schott HCE on a LS-2 collector.  

SciTech Connect

Sandia National Laboratories has completed thermal performance testing on the Schott parabolic trough receiver using the LS-2 collector on the Sandia rotating platform at the National Solar Thermal Test Facility in Albuquerque, NM. This testing was funded as part of the US DOE Sun-Lab USA-Trough program. The receiver tested was a new Schott receiver, known as Heat Collector Elements (HCEs). Schott is a new manufacturer of trough HCEs. The Schott HCEs are 4m long; therefore, two were joined and mounted on the LS-2 collector module for the test. The Schott HCE design consists of a 70mm diameter high solar absorptance coated stainless steel (SS) tube encapsulated within a 125mm diameter Pyrex{reg_sign} glass tube with vacuum in the annulus formed between the SS and glass tube to minimize convection heat losses. The Schott HCE design is unique in two regards. First, the bellows used to compensate for the difference in thermal expansion between the metal and glass tube are inside the glass envelope rather than outside. Second, the composition of materials at the glass-to-metal seal has very similar thermal expansion coefficients making the joint less prone to breakage from thermal shock. Sandia National Laboratories provided both the azimuth and elevation collector module tracking systems used during the tests. The test results showed the efficiency of the Schott HCE to be very similar to current HCEs being manufactured by Solel. This testing provided performance verification for the use of Schott tubes with Solargenix trough collector assemblies at currently planned trough power plant projects in Arizona and Nevada.

Moss, Timothy A.; Brosseau, Douglas A.

2005-07-01T23:59:59.000Z

108

THE COMPOSITION OF BRYOPHYTE COMMUNITIES ON LIMESTONE VERSUS BASALT SUBSTRATES IN COASTAL AND MID-ELEVATION FORESTS OF MO'OREA, FRENCH POLYNESIA  

E-Print Network (OSTI)

and macronutrients, like phosphorous, (Bailey 1996) which isP=0.0034). Lastly, the phosphorous concentration isin a higher pH. Finally, phosphorous levels were 3ppm higher

Wu, Jasper

2012-01-01T23:59:59.000Z

109

Stratigraphic variations and secondary porosity within the Maynardville Limestone in Bear Creek Valley, Y-12 Plant, Oak Ridge, Tennessee  

SciTech Connect

To evaluate groundwater and surface water contamination and migration near the Oak Ridge Y-12 plant, a Comprehensive Groundwater Monitoring Plan was developed. As part of the Maynardville exit pathways monitoring program, monitoring well clusters were ii installed perpendicular to the strike of the Maynardville Limestone, that underlies the southern part of the Y-12 Plant and Bear Creek Valley (BCV). The Maynardville Project is designed to locate potential exit pathways of groundwater, study geochemical characteristics and factors affecting the occurrence and distribution of water-bearing intervals, and provide hydrogeologic information to be used to reduce the potential impacts of contaminants entering the Maynardville Limestone.

Goldstrand, P.M. [Univ. of Nevada, Reno, NV (United States)

1995-05-01T23:59:59.000Z

110

DOE - Office of Legacy Management -- Petrolite Corp - MO 08  

Office of Legacy Management (LM)

Petrolite Corp - MO 08 Petrolite Corp - MO 08 FUSRAP Considered Sites Site: PETROLITE CORP (MO.08) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: St. Louis , Missouri MO.08-1 Evaluation Year: 1987 MO.08-4 Site Operations: Research involving test quantities of radioactive materials. MO.08-2 Site Disposition: Eliminated - Licensed - Potential for contamination remote MO.08-3 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium Flouride & Thorium Oxide MO.08-2 Radiological Survey(s): None Indicated Site Status: Eliminated from further consideration under FUSRAP Also see Documents Related to PETROLITE CORP MO.08-1 - Summary Paper; Title: License History for Petrolite Corporation, St. Louis (MO.8); dated 07/16/93; with three attachments (3

111

Influence of Limestone Addition in a 10 kWth Chemical-Looping Combustion Unit Operated with Petcoke  

Science Journals Connector (OSTI)

Influence of Limestone Addition in a 10 kWth Chemical-Looping Combustion Unit Operated with Petcoke ... The fuel fed was a petcoke, and the gasifying agent was steam. ... (14) To date, continuous testing with ilmenite as an oxygen carrier has been performed with a Mexican petcoke,(15, 16) South African coal,(17) and Colombian bituminous coal. ...

Ana Cuadrat; Carl Linderholm; Alberto Abad; Anders Lyngfelt; Juan Adnez

2011-08-29T23:59:59.000Z

112

Strontium and carbon isotope stratigraphy of the Late Jurassic shallow marine limestone in western Palaeo-Pacific, northwest Borneo  

E-Print Network (OSTI)

Strontium and carbon isotope stratigraphy of the Late Jurassic shallow marine limestone in western-Pacific a b s t r a c t Strontium and carbon isotope stratigraphy was applied to a 202 m-thick shallow marine, which was deposited in the western Palaeo-Pacific. Strontium isotopic ratios of rudist specimens suggest

Gilli, Adrian

113

The Mississippian Leadville Limestone Exploration Play, Utah and Colorado-Exploration Techniques and Studies for Independents  

SciTech Connect

The Mississippian (late Kinderhookian to early Meramecian) Leadville Limestone is a shallow, open-marine, carbonate-shelf deposit. The Leadville has produced over 53 million barrels (8.4 million m{sup 3}) of oil/condensate from seven fields in the Paradox fold and fault belt of the Paradox Basin, Utah and Colorado. The environmentally sensitive, 7500-square-mile (19,400 km{sup 2}) area that makes up the fold and fault belt is relatively unexplored. Only independent producers operate and continue to hunt for Leadville oil targets in the region. The overall goal of this study is to assist these independents by (1) developing and demonstrating techniques and exploration methods never tried on the Leadville Limestone, (2) targeting areas for exploration, (3) increasing deliverability from new and old Leadville fields through detailed reservoir characterization, (4) reducing exploration costs and risk especially in environmentally sensitive areas, and (5) adding new oil discoveries and reserves. The final results will hopefully reduce exploration costs and risks, especially in environmentally sensitive areas, and add new oil discoveries and reserves. The study consists of three sections: (1) description of lithofacies and diagenetic history of the Leadville at Lisbon field, San Juan County, Utah, (2) methodology and results of a surface geochemical survey conducted over the Lisbon and Lightning Draw Southeast fields (and areas in between) and identification of oil-prone areas using epifluorescence in well cuttings from regional wells, and (3) determination of regional lithofacies, description of modern and outcrop depositional analogs, and estimation of potential oil migration directions (evaluating the middle Paleozoic hydrodynamic pressure regime and water chemistry). Leadville lithofacies at Libon field include open marine (crinoidal banks or shoals and Waulsortian-type buildups), oolitic and peloid shoals, and middle shelf. Rock units with open-marine and restricted-marine facies constitute a significant reservoir potential, having both effective porosity and permeability when dissolution of skeletal grains, followed by dolomitization, has occurred. Two major types of diagenetic dolomite are observed in the Leadville Limestone at Lisbon field: (1) tight 'early' dolomite consisting of very fine grained (<5 {micro}m), interlocking crystals that faithfully preserve depositional fabrics; and (2) porous, coarser (>100-250 {micro}m), rhombic and saddle crystals that discordantly replace limestone and earlier very fine grained dolomite. Predating or concomitant with late dolomite formation are pervasive leaching episodes that produced vugs and extensive microporosity. Most reservoir rocks within Lisbon field appear to be associated with the second, late type of dolomitization and associated leaching events. Other diagenetic products include pyrobitumen, syntaxial cement, sulfide minerals, anhydrite cement and replacement, and late macrocalcite. Fracturing (solution enlarged) and brecciation (autobrecciation) caused by hydrofracturing are widespread within Lisbon field. Sediment-filled cavities, related to karstification of the exposed Leadville, are present in the upper third of the formation. Pyrobitumen and sulfide minerals appear to coat most crystal faces of the rhombic and saddle dolomites. The fluid inclusion and mineral relationships suggest the following sequence of events: (1) dolomite precipitation, (2) anhydrite deposition, (3) anhydrite dissolution and quartz precipitation, (4) dolomite dissolution and late calcite precipitation, (5) trapping of a mobile oil phase, and (6) formation of bitumen. Fluid inclusions in calcite and dolomite display variable liquid to vapor ratios suggesting reequilibration at elevated temperatures (50 C). Fluid salinities exceed 10 weight percent NaCl equivalent. Low ice melting temperatures of quartz- and calcite-hosted inclusions suggest chemically complex Ca-Mg-bearing brines associated with evaporite deposits were responsible for mineral deposition. The overall conclusion from th

Thomas Chidsey

2008-09-30T23:59:59.000Z

114

Laboratory Investigations in Support of Dioxide-Limestone Sequestration in the Ocean  

SciTech Connect

Research under this Project has proven that liquid carbon dioxide can be emulsified in water by using very fine particles as emulsion stabilizers. Hydrophilic particles stabilize a CO{sub 2}-in-H{sub 2}O (C/W) emulsion; hydrophobic particles stabilize a H{sub 2}O-in-CO{sub 2} (W/C) emulsion. The C/W emulsion consists of tiny CO{sub 2} droplets coated with hydrophilic particles dispersed in water. The W/C emulsion consists of tiny H{sub 2}O droplets coated with hydrophobic particles dispersed in liquid carbon dioxide. The coated droplets are called globules. The emulsions could be used for deep ocean sequestration of CO{sub 2}. Liquid CO{sub 2} is sparsely soluble in water, and is less dense than seawater. If neat, liquid CO{sub 2} were injected in the deep ocean, it is likely that the dispersed CO{sub 2} droplets would buoy upward and flash into vapor before the droplets dissolve in seawater. The resulting vapor bubbles would re-emerge into the atmosphere. On the other hand, the emulsion is denser than seawater, hence the emulsion plume would sink toward greater depth from the injection point. For ocean sequestration a C/W emulsion appears to be most practical using limestone (CaCO{sub 3}) particles of a few to ten ?m diameter as stabilizing agents. A mix of one volume of liquid CO{sub 2} with two volumes of H{sub 2}O, plus 0.5 weight of pulverized limestone per weight of liquid CO{sub 2} forms a stable emulsion with density 1087 kg m{sup -3}. Ambient seawater at 500 m depth has a density of approximately 1026 kg m{sup -3}, so the emulsion plume would sink by gravity while entraining ambient seawater till density equilibrium is reached. Limestone is abundant world-wide, and is relatively cheap. Furthermore, upon disintegration of the emulsion the CaCO{sub 3} particles would partially buffer the carbonic acid that forms when CO{sub 2} dissolves in seawater, alleviating some of the concerns of discharging CO{sub 2} in the deep ocean. Laboratory experiments showed that the CaCO{sub 3} emulsion is slightly alkaline, not acidic. We tested the release of the CO{sub 2}-in-H{sub 2}O emulsion stabilized by pulverized limestone in the DOE National Energy Technology Laboratory High Pressure Water Tunnel Facility (HPWTF). Digital photographs showed the sinking globules in the HPWTF, confirming the concept of releasing the emulsion in the deep ocean. We modeled the release of an emulsion from the CO{sub 2} output of a 1000 MW coal-fired power plant at 500 m depth. The emulsion would typically sink several hundred meters before density equilibration with ambient seawater. The CO{sub 2} globules would rain out from the equilibrated plume toward the ocean bottom where they would disintegrate due to wave action and bottom friction. Conceptual release systems are described both for an open ocean release and a sloping seabed release of the emulsion.

Dan Golomb; Eugene Barry; David Ryan; Stephen Pennell; Carl Lawton; Peter Swett; Devinder Arora; John Hannon; Michael Woods; Huishan Duan; Tom Lawlor

2008-09-30T23:59:59.000Z

115

In situ vitrification of Oak Ridge National Laboratory soil and limestone  

SciTech Connect

Process feasibility studies were successfully performed on two different developmental scales to determine the technical application of in situ vitrification (ISV) to Oak Ridge National Laboratory (ORNL) intermediate-level waste. In the laboratory, testing was performed on crucibles containing quantities of 50% ORNL soil and 50% ORNL limestone. In the engineering-scale testing, a 1/12-scaled simulation of ORNL Trench 7 was constructed and vitrified, resulting in waste product soil and limestone concentrations of 68% and 32%, respectively. Results from the two scales of testing indicate that the ORNL intermediate-level waste sites may be successfully processed by ISV; the waste form will retain significant quantities of the cesium and strontium. Because /sup 137/Cs is the major component of the radionuclide inventory in the ORNL seepage pits and trenches, final field process decontamination factors (i.e., off gas at the ground surface relative to the waste inventory) of 10/sup 4/ are desired to minimize activity buildup in the off-gas system. These values were realized during the engineering-scale test for both cesium and strontium. The vitrified material effectively contained 99.996% of the cesium and strontium placed in the engineering-scale test. This is equivalent to decontamination factors of greater than 10/sup 4/. Volume reduction for the engineering-scale test was 60%. No migration of the cesium to the uncontaminated surrounding soil was detected. These favorable results indicate that, once verified in a pilot-scale test, an adequately designed ISV system could be produced to treat the ORNL seepage pits and trenches without excessive activity accumulation in the off-gas treatment system.

Carter, J.G.; Bates, S.O.; Maupin, G.D.

1987-03-01T23:59:59.000Z

116

Preliminary neutronic studies for the liquid-salt-cooled very hightemperature reactor (LS-VHTR).  

SciTech Connect

Preliminary neutronic studies have been performed in order to provide guidelines to the design of a liquid-salt cooled Very High Temperature Reactor (LS-VHTR) using Li{sub 2}BeF{sub 4} (FLiBe) as coolant and a solid cylindrical core. The studies were done using the lattice codes (WIMS8 and DRAGON) and the linear reactivity model to estimate the core reactivity balance, fuel composition, discharge burnup, and reactivity coefficients. An evaluation of the lattice codes revealed that they give very similar accuracy as the Monte Carlo MCNP4C code for the prediction of the fuel element multiplication factor (kinf) and the double heterogeneity effect of the coated fuel particles in the graphite matrix. The loss of coolant from the LS-VHTR core following coolant voiding was found to result in a positive reactivity addition, due primarily to the removal of the strong neutron absorber Li-6. To mitigate this positive reactivity addition and its impact on reactor design (positive void reactivity coefficient), the lithium in the coolant must be enriched to greater than 99.995% in its Li-7 content. For the reference LS-VHTR considered in this work, it was found that the magnitude of the coolant void reactivity coefficient (CVRC) is quite small (less than $1 for 100% voiding). The coefficient was found to become more negative or less positive with increase in the lithium enrichment (Li-7 content). It was also observed that the coefficient is positive at the beginning of cycle and becomes more negative with increasing burnup, indicating that by using more than one fuel batch, the coefficient could be made negative at the beginning of cycle. It might, however, still be necessary at the beginning of life to design for a negative CVRC value. The study shows that this can be done by using burnable poisons (erbium is a leading candidate) or by changing the reference assembly design (channel dimensions) in order to modify the neutron spectrum. Parametric studies have been performed to attain targeted cycle length of 18 months and discharge burnup greater than 100 GWd/t with a constraint on the uranium enrichment (less than 20% to support non-proliferation goals). The results show that the required uranium enrichment and discharge burnup increase with the number of batches. The three-batch scheme is, however, impractical because the required uranium enrichment is greater than 20%. The required enrichment is smallest for the one-batch case, but its discharge burnup is smaller than the target value. Therefore, the two-batch scheme is desirable to satisfy simultaneously the target cycle length and discharge burnup. It was additionally shown that to increase the core power density to 150% of the reference core value, the required uranium enrichment is less than 20% in the single-batch scheme. This higher power density might not be achievable in the two- or three-batch schemes because the fuel enrichment would exceed 20%.

Kim, T. K.; Taiwo, T. A.; Yang, W. S.

2005-10-05T23:59:59.000Z

117

Changes in Perforation-Induced Formation Damage With Degree of Underbalance: Comparison of Sandstone and Limestone Formations  

SciTech Connect

Field data and recently developed models provide some guidance for estimating the underbalance needed to obtain fully functional perforations, but there are little data available that relate flow efficiency to lower underbalances in different rock types. To improve understanding of the surge cleanup process, we have performed two series of perforation flow tests in Berea Sandstone and in Bedford Limestone cores at increasing levels of underbalance. Flow tests were performed according to modified API RP43, section 4 test procedures. At the conclusion of the tests, the cores were analyzed using high-resolution X-ray CT techniques. The shape, dimensions and total volumes of both the open tunnel and the remaining embedded liner metal were extracted from the CT data and correlated with the underbalance and with the flow test results. Open tunnel diameters and volumes are much lower in the limestone samples. While the amount of metal remaining in the tunnel and at the perforation tip decreases dramatically with underbalance in Berea Sandstone cores, the amount of metal is nearly constant in the limestone cores. Conversely, the tunnel volume increases with underbalance in the Sandstone cores but stays constant in the limestone. Core flow efficiency results correlate with these observations. There is a sharp increase in CFE in the sandstone samples as the tunnel volumes increase and little change in CFE in the limestone samples corresponding to unchanging tunnel volume. The tests also offer some evidence of the cleanup mechanism at the perforation tip, at least in the sandstone cores. Samples at intermediate underbalance levels show evidence of open tunnel space in an annulus surrounding the metal slug at the tip. This suggests that cleanup may proceed at least partially by axial flow through crushed rock surrounding the metal. As this material erodes away, the metal is loosened and is flushed from the tunnel. Existing models for cleanup are based primarily on radial flow.

Detwiler, R; Halleck, P M; Karacan, C O; Hardesty, J

2003-10-22T23:59:59.000Z

118

Dipole and Quadrupole Magnets LS-36 S. H. Kim and R.J. Lari  

NLE Websites -- All DOE Office Websites (Extended Search)

Calculations of the Booster Calculations of the Booster Dipole and Quadrupole Magnets LS-36 S. H. Kim and R.J. Lari September 30, 1985 Two dimensional magnetic fields of the booster dipole and quadrupole magnets were calculated using the computer program POISSON. The magnet parameters used for the calculation are based on L. Teng's note (8/12/85) and listed in Table 1. Dipole Gap Pole Width Coil Cross-Section Good Field Region Yoke Thickness Overall Dimension B Max NI Dipole Magnet Table 1 Booster Magnets ±2 cm ±5cm 2 3.5 x 5 cm ± 2.8 cm wide ± 2.0 cm high 5 cm 21 x 30 cm 2 7 kG 11141 A Pole Contour Pole Width Quadrupole Pole Tip Corner (x,y) Coil Cross-Section Good Field Region Overall Dimension B' max B max NI xy = 4 cm 2 4.24 em (1,4) and (4,1) 2.4 cm 2 1.4 cm radius

119

On the formation of TeV radiation in LS 5039  

E-Print Network (OSTI)

The recent detections of TeV gamma-rays from compact binary systems show that relativistic outflows (jets or winds) are sites of effective acceleration of particles up to multi-TeV energies. In this paper, we discuss the conditions of acceleration and radiation of ultra-relativistic electrons in LS 5039, the gamma-ray emitting binary system for which the highest quality TeV data are available. Assuming that the gamma-ray emitter is a jet-like structure, we performed detailed numerical calculations of the energy spectrum and lightcurves accounting for the acceleration efficiency, the location of the accelerator, the speed of the emitting flow, the inclination angle of the system, as well as specific features related to anisotropic inverse Compton scattering and pair production. We conclude that the accelerator should not be deep inside the binary system unless we assume a very efficient acceleration rate. We show that within the IC scenario both the gamma-ray spectrum and flux are strongly orbital phase dependent. Formally, our model can reproduce, for specific sets of parameter values, the energy spectrum of gamma-rays reported by HESS for wide orbital phase intervals. However, the physical properties of the source can be constrained only by observations capable of providing detailed energy spectra for narrow orbital phase intervals ($\\Delta\\phi\\ll 0.1$).

Dmitry Khangulyan; Felix Aharonian; Valenti Bosch-Ramon

2007-07-11T23:59:59.000Z

120

On the formation of TeV radiation in LS 5039  

E-Print Network (OSTI)

The recent detections of TeV gamma-rays from compact binary systems show that relativistic outflows (jets or winds) are sites of effective acceleration of particles up to multi-TeV energies. In this paper, we discuss the conditions of acceleration and radiation of ultra-relativistic electrons in LS 5039, currently the binary system emitting gamma-rays with the highest quality data in the TeV range. Assuming that the gamma-ray emitter is a jet-like structure, we performed detailed numerical calculations of the energy spectrum and lightcurves accounting for the acceleration efficiency, the location of the accelerator, the speed of the emitting flow, the inclination angle of the system, as well as specific features related to anisotropic inverse Compton scattering and pair production. We conclude that the accelerator should not be deep inside the binary system unless we assume a very efficient acceleration rate. We show that within the IC scenario both the gamma-ray spectrum and flux are strongly orbital phase d...

Khangulyan, Dmitry; Bosch-Ramon, Valenti

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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121

LS-266 OPTIMIZATION OF FOUR-BUTTON BEAM POSITION MONITOR CONFIGURATION FOR SMALL-GAP VACUUM CHAMBERS  

NLE Websites -- All DOE Office Websites (Extended Search)

LS-266 LS-266 OPTIMIZATION OF FOUR-BUTTON BEAM POSITION MONITOR CONFIGURATION FOR SMALL-GAP VACUUM CHAMBERS S. H. Kim March 27, 1998 Summary - Induced charges on a four-button beam position monitor (BPM) system attached on a beam chamber of narrow rectangular cross sections are calculated as a 2-D electrostatic problem of image charges. The calculation shows that for a narrow chamber of width/height (2w/2h) >> 1, over 90% of the induced charges are distributed within a distance of 2h from the charged beam position in the direction of the chamber width. Therefore, a four-button system with a button diameter of (2 ~ 2.5)h and no button offset from the beam position is the most efficient configuration. The four-button BPMs used for 8-mm and 5-mm chambers in the APS have relatively low sensitivities because the button locations are outside

122

Oxidation, Reduction, and Condensation of Alcohols over (MO3)3 (M=Mo, W) Nanoclusters  

SciTech Connect

The reactions of deuterated methanol, ethanol, 1-propanol, 1-butanol, 2-propanol, 2-butanol and t-butanol over cyclic (MO3)3 (M = Mo, W) clusters were studied experimentally with temperature programmed desorption (TPD) and theoretically with coupled cluster CCSD(T) theory and density functional theory. The reactions of two alcohols per M3O9 cluster are required to provide agreement with experiment for D2O release, dehydrogenation and dehydration. The reaction begins with the elimination of water by proton transfers and forms an intermediate dialkoxy species which can undergo further reaction. Dehydration proceeds by a ? hydrogen transfer to a terminal M=O. Dehydrogenation takes place via an ? hydrogen transfer to an adjacent MoVI = O atom or a WVI metal center with redox involved for M = Mo and no redox for M = W. The two channels have comparable activation energies. H/D exchange to produce alcohols can take place after olefin is released or via the dialkoxy species depending on the alcohol and the cluster. The Lewis acidity of the metal center with WVI being larger than MoVI results in the increased reactivity of W3O9 over Mo3O9 for dehydrogenation and dehydration.

Fang, Zongtang; Li, Zhenjun; Kelley, Matthew S.; Kay, Bruce D.; Li, Shenggang; Hennigan, Jamie M.; Rousseau, Roger J.; Dohnalek, Zdenek; Dixon, David A.

2014-10-02T23:59:59.000Z

123

LABORATORY INVESTIGATIONS IN SUPPORT OF CARBON DIOXIDE-LIMESTONE SEQUESTRATION IN THE OCEAN  

SciTech Connect

In the second half of the second contractual year the construction of the High Pressure Flow Reactor (HPFR) was completed, tested, and satisfactory results have been obtained. The major component of the HPFR is a Kenics-type static mixer in which two fluids are thoroughly mixed. In our case the two fluids are liquid or supercritical CO{sub 2} and a slurry of pulverized limestone (CaCO{sub 3}) in pure or artificial seawater. The outflow from the static mixer is an emulsion consisting of CO{sub 2} droplets coated with a sheath of CaCO{sub 3} particles dispersed in water. The coated CO{sub 2} droplets are called globules, and the emulsion is called globulsion. By adjusting the proportions of the two fluids, carbon dioxide and water, the length and pressure drop across the static mixer, globules with a fairly uniform distribution of diameters can be obtained. By using different particle sizes of CaCO{sub 3}, globules can be obtained that are lighter or heavier than water, thus floating or sinking in a water column. The globulsion ensuing from the static mixer flows into a high pressure cell with windows, where the properties of the globules can be observed, such as their diameter and settling velocity. Using the Stokes' equation, the specific gravity of the globules can be determined. Also, a second generation High Pressure Batch Reactor (HPBR) was constructed. This reactor allows better mixing of the ingredients, more accurate temperature and pressure control, better illumination and video camera observations. In this reactor we established that CO{sub 2}-in-water globulsions can be formed stabilized by other particles than pulverized limestone. So far, we used flyash obtained from a local coal-fired power plant, and a pulverized magnesium silicate mineral, lizardite, Mg{sub 3}Si{sub 2}O{sub 5}(OH){sub 4}, obtained from DOE's Albany Research Laboratory. In the reporting period we conducted joint experiments in NETL's high pressure water tunnel facility. Thanks to the longer travel path of the globules, and the excellent optical instrumentation available at NETL, we were able to more accurately obtain globule diameters and settling velocities.

Dan Golomb; Eugene Barry; David Ryan; Carl Lawton; Peter Swett; John Hannon; Huishan Duan

2004-09-01T23:59:59.000Z

124

DOE - Office of Legacy Management -- St Louis University - MO...  

Office of Legacy Management (LM)

St Louis University - MO 0-02 FUSRAP Considered Sites Site: ST. LOUIS UNIVERSITY (MO.0-02) Eliminated from consideration under FUSRAP - As of 1987 the facility operated under an...

125

Activation of the Sulfhydryl Group by Mo Centers: Kinetics of...  

NLE Websites -- All DOE Office Websites (Extended Search)

Mo(mu-SH)Mo Complex Abstract: This paper provides evidence from kinetic experiments and electronic structure calculations of a significantly reduced S-H bond strength in the...

126

Monolayer MoS2 Heterojunction Solar Cells  

Science Journals Connector (OSTI)

Monolayer MoS2 Heterojunction Solar Cells ... molybdenum disulfide; heterojunction solar cell; 2D material; monolayer; chemical vapor deposition ...

Meng-Lin Tsai; Sheng-Han Su; Jan-Kai Chang; Dung-Sheng Tsai; Chang-Hsiao Chen; Chih-I Wu; Lain-Jong Li; Lih-Juann Chen; Jr-Hau He

2014-07-21T23:59:59.000Z

127

Management of solid wastes from the Limestone Injection Dry Scrubbing (LIDS) clean coal technology. Final report  

SciTech Connect

The objectives of this project were to characterize by-products from a pilot Limestone Injection Dry Scrubbing (LIDS) process and to develop processes directed toward the safe and economic use or disposal of these wastes. Because LIDS is a developing Clean Coal technology, a database of chemical and physical characteristics of the by-product was first developed. During the course of this project, it was found that the waste alone did not form high-strength products sufficient for use in construction and engineering applications. Therefore, the project was redirected to evaluate the by-product as a soil-cement and Portland cement raw material, agricultural liming agent, backfill/landfill material component, and mine reclamation/neutralizing agent. Based on these evaluations, the most viable uses for the LIDS byproduct include use in mine reclamation or as a neutralization agent. If soluble sulfites can be minimized by avoiding a dolomitic LIDS reagent, use as an agricultural liming agent has promise. Interest from an Ohio utility in the LIDS process suggests possible application of results at the demonstration or commercial stages.

Musiol, W.F. Jr.; Czuczwa, J.M.

1993-03-01T23:59:59.000Z

128

Diagenetic features of Trenton Limestone in northern Indiana: petrographic evidence for Late (Mesogenetic) Dolostone  

SciTech Connect

Three conventional cores of the entire Trenton section were examined in detail by in-depth visual description, analysis of more than 250 thin sections, scanning electron microscopy, and x-ray diffraction. The cores are located in the northern half of Indiana where they span the major dolostone pinch-out that is the trap for the prolific Trenton oil and gas field. The Trenton Limestone is completely dolomitized in northern Indiana. Dolostone abundance decreases to the south where the dolostone is restricted to the upper few feet of the formation. Two major types of dolostone are recognized. The top 5-20 ft of the Trenton cores consists of medium crystalline nonporous xenotopic ferroan dolostone. Mesogenetic dewatering of the overlying Maquoketa shale is the proposed dolomitizing mechanisms for this ferroan dolostone cap. Below the ferroan dolostone cap in northern Indiana is coarsely crystalline dolostone, which consists of thin intercalated subfacies of porous idiotopic and nonporous xenotopic dolostone. This is the dominant dolostone type and is the reservoir in the Trenton field. The coarsely crystalline dolostone postdates the ferroan dolostone cap, chert nodule formation, and initial pressure solution. Therefore, this dolostone is considered to have formed relatively late in the diagenetic history of the Trenton under mesogenetic conditions. In the northernmost core, nearly all of the secondary dolomitic porosity is plugged by poikilotopic gypsum and minor amounts of calcite and celestite. Other diagenetic features observed in Trenton are also discussed, including silicification, ferroan calcite cement, upper Trenton contact formation, hardgrounds, and pressure solution.

Fara, D.R.

1986-08-01T23:59:59.000Z

129

Subsurface stratigraphy and depositional history of Madison Limestone (Mississippian), Williston Basin  

SciTech Connect

Cyclic carbonate-evaporite deposits of the Madison Limestone (Mississippian) in the Williston basin are made up of four main facies. From basin to shelf, the normal facies transition is from offshore deeper water (Lodgepole) facies to crinoidal-algal banks and back-bank fine carbonate, evaporite, and minor terrigenous clastic beds on the shallow shelf. Five major depositional cycles are correlated and mapped on the basis of shaley marker beds identified on gamma-ray-neutron or gamma-ray-sonic logs. The marker beds are interpreted as reworked and redistributed silt and clay-size sediments originally deposited, possibly by eolian processes, on the emergent shelf during low sea level phases of cycle development. From oldest to youngest, the first two cycles are characterized by increasing amounts of crinoidal-bioclastic and oolite-algal carbonates, culminating in the Mission Canyon facies of the middle cycle. The upper two cycles are characterized by increasing amounts of evaporite deposits, culminating in the Charles salt facies of the youngest cycle. Much of the Madison section on the south and east flanks of the basin consists of dolomite. Dolomite content decreased toward the basin center, where a major share of Madison petroleum production is located. Reservoir beds in the oil fields are primarily partially dolomitized oolite-algal or crinoidal-bioclastic bank carbonates. Most of the productive petroleum reservoirs are located in the middle cycles of the Madison.

Peterson, J.A.

1985-05-01T23:59:59.000Z

130

Recovery and utilization of gypsum and limestone from scrubber sludge. [Quarterly] technical report, March 1, 1993--May 31, 1993  

SciTech Connect

Wet flue-gas desulfurization units in coal-fired power plants produce a large amount of sludge which must be disposed of, and which is currently landfilled in most cases. Increasing landfill costs are gradually forcing utilities to find other alternatives. In principle, this sludge can be used to make gypsum (CaSO{sub 4}-2H{sub 2}O) for products such as plaster-of-Paris and wallboard, but only if impurities such as unreacted limestone and soluble salts are removed, and the calcium sulfite (CaSO{sub 3}) is oxidized to calcium sulfate (CaSO{sub 4}). This project is investigating methods for removing the impurities from the sludge so that high-quality, salable gypsum products can be made. Work done in the previous quarter concentrated on developing a low-cost froth flotation process that could remove limestone, unburned carbon, and related contaminants from the sludge while recovering the bulk of the calcium sulfite and gypsum. In the current quarter, experiments to remove impurities from the sludge using a water-only cyclone were conducted. The cyclone has been found to be effective for removing the coarser limestone impurities, as well as removing contaminants such as fine gravel and grinding-ball chips. These results show that the cyclone will be very complementary with froth flotation, which mainly removes the very fine impurities.

Kawatra, S.K.; Eisele, T.C. [Michigan Technological Univ., Houghton, MI (United States). Dept. of Metallurgical and Materials Engineering

1993-09-01T23:59:59.000Z

131

CANSOLV{reg_sign} system FGD: An alternative to limestone SO{sub 2} control in FBC  

SciTech Connect

This paper describes the process chemistry, components, emissions, and by-products of the CANSOLV{reg_sign} System SO{sub 2} scrubbing technology, a regenerable process for economical, highly selective capture of SO{sub 2} from gas streams, with outlet SO{sub 2} concentration down to a few ppm if desired. In fluid bed combustors, the CANSOLV{reg_sign} System FGD process can be substituted for limestone injection, realizing significant cost savings. With CANSOLV{reg_sign} System Technology, the FGD by-product is pure, water saturated SO{sub 2} which can be used on site or sold as a commodity chemical or converted into sulfuric acid or sulfur. Since FGD costs with the CANSOLV{reg_sign} System process are only weakly sensitive to the concentration of SO{sub 2} in the feed gas, high sulfur low costs fuels including petroleum coke can be burned economically. Compared with limestone injection in FBC, the CANSOLV{reg_sign} System FGD process eliminates the need for limestone handling. Solid by-product volumes are very significantly reduced, simplifying both collection and disposal. Chemical consumption is essentially eliminated. The process generates a valuable by-product instead of a costly waste stream. Fuel costs can be minimized and significant operating cost savings can be expected. 3 refs., 4 figs.

Parisi, P.J.; Sarlis, J.N. [Cansolv Technologies Inc., Montreal, Quebec (Canada)

1997-12-31T23:59:59.000Z

132

Mo Supply Chain for Nuclear Medicine Ladimer S. Nagurney  

E-Print Network (OSTI)

The 99 Mo Supply Chain for Nuclear Medicine Ladimer S. Nagurney Department of Electrical November 13, 2012 #12;Nuclear Medicine: Meeting Patient Needs with 99 Mo Ladimer S. Nagurney The 99 Mo Supply Chain #12;Background and Motivation Study of Nuclear Medicine Supply Chains is a combination

Nagurney, Anna

133

Development of CaMoO4 crystal scintillators for double beta decay experiment with 100-Mo  

E-Print Network (OSTI)

Energy resolution, alpha/beta ratio, pulse-shape discrimination for gamma rays and alpha particles, temperature dependence of scintillation properties, and radioactive contamination were studied with CaMoO4 crystal scintillators. A high sensitivity experiment to search for neutrinoless double beta decay of 100-Mo by using CaMoO4 scintillators is discussed.

A. N. Annenkov; O. A. Buzanov; F. A. Danevich; A. Sh. Georgadze; S. K. Kim; H. J. Kim; Y. D. Kim; V. V. Kobychev; V. N. Kornoukhov; M. Korzhik; J. I. Lee; O. Missevitch; V. M. Mokina; S. S. Nagorny; A. S. Nikolaiko; D. V. Poda; R. B. Podviyanuk; D. J. Sedlak; O. G. Shkulkova; J. H. So; I. M. Solsky; V. I. Tretyak; S. S. Yurchenko

2007-07-10T23:59:59.000Z

134

Processing, Microstructure, and Properties of Multiphase Mo Silicide Alloys  

SciTech Connect

Multiphase Mo silicide alloys containing T2 (Mo{sub 5}SiB{sub 2}), Mo{sub 3}Si and Mo phases where prepared by both melting and casting (M and C) and powder metallurgical (PM) processes. Glassy phases are observed in PM materials but not in M and C materials. Microstructural studies indicate that the primary phase is Mo-rich solid solution in alloys containing {le}(9.4Si+13.8B, at. %) and T2 in alloys with {ge}(9.8Si+14.6B). An eutectic composition is estimated to be close to Mo-9.6Si-14.2B. The mechanical properties of multiphase silicide alloys were determined by hardness, tensile and bending tests at room temperature. The multiphase alloy MSB-18 (Mo-9.4Si-13.8B) possesses a flexure strength distinctly higher than that of MoSi{sub 2} and other Mo{sub 5}Si{sub 3} silicide alloys containing no Mo particles. Also, MSB-18 is tougher than MoSi{sub 2} by a factor of 4.

Heatherly, L.; Liu, C.T.; Schneibel, J.H.

1998-11-30T23:59:59.000Z

135

Missouri Department of National Resources Energy Center Mo DNR | Open  

Open Energy Info (EERE)

Department of National Resources Energy Center Mo DNR Department of National Resources Energy Center Mo DNR Jump to: navigation, search Name Missouri Department of National Resources Energy Center (Mo DNR) Place Jefferson City, Missouri Zip 65102 Product Mo DNR manages the Energy Revolving Fund which assists public organisations in Missouri in financing energy efficient projects for their facilities. References Missouri Department of National Resources Energy Center (Mo DNR)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Missouri Department of National Resources Energy Center (Mo DNR) is a company located in Jefferson City, Missouri . References ↑ "Missouri Department of National Resources Energy Center (Mo

136

Performance of Mo/Au TES microcalorimeters  

Science Journals Connector (OSTI)

We are developing X-ray calorimeters to meet the specifications of the Constellation-X mission. Each calorimeter consists of a transition-edge-sensor (TES) thermometer which is suspended on a silicon-nitride membrane. Our TES thermometers are Mo/Au bilayer films that are biased in the sharp phase transition between the superconducting and normal-metal states. These calorimeters have demonstrated very good energy resolutions: 2.4 eV at 1.5 keV and 3.7 eV at 3.3 keV. The energy resolutions are limited by thermal noise and Johnson noise (which are intrinsic to any resistive calorimeter) plus excess noise. The excess noise which is several times larger than the Johnson noise is consistent with frequency-independent voltage noise in the TES. Detailed measurements of one Mo/Au TES demonstrate that the excess noise is independent of the voltage applied to the TES over a range of biases at the same TES resistance. The magnitude of the excess noise is smallest at the high-resistance end of the phase transition. We also compared noise in square Mo/Au TESs ranging in size from 300 microns to 600 microns to learn how the excess noise is affected by the geometry of the TES.

Mark A. Lindeman; Regis P. Brekosky; Enectali Figueroa-Feliciano; Fred M. Finkbeiner; Mary Li; Caroline K. Stahle; Carl M. Stahle; Nilesh Tralshawala

2002-01-01T23:59:59.000Z

137

DOE - Office of Legacy Management -- United Nuclear Corp - MO 0-03  

Office of Legacy Management (LM)

United Nuclear Corp - MO 0-03 United Nuclear Corp - MO 0-03 FUSRAP Considered Sites Site: UNITED NUCLEAR CORP. (MO.0-03) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: Mallinckrodt Chemical Works Mallinckrodt Nuclear Corporation MO.0-03-1 MO.0-03-2 Location: Hematite , Missouri MO.0-03-1 Evaluation Year: Circa 1987 MO.0-03-3 Site Operations: Commercial fuel fabrication operation. Licensed to reclaim unirradiated enriched uranium from scrap generated in fuel fabrication and fuel material preparation. MO.0-03-1 MO.0-03-2 MO.0-03-3 MO.0-03-4 Site Disposition: Eliminated - NRC licensed - Commercial operations MO.0-03-3 MO.0-03-5 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium MO.0-03-3 Radiological Survey(s): None Indicated

138

Evidence of coupling between the thermal and nonthermal emission in the gamma-ray binary LS I +61 303  

E-Print Network (OSTI)

The gamma-ray binary LS I +61 303 is composed of a Be star and a compact companion orbiting in an eccentric orbit. Variable flux modulated with the orbital period of ~26.5 d has been detected from radio to very high-energy gamma rays. In addition, the system presents a superorbital variability of the phase and amplitude of the radio outburst with a period of ~4.6 yr. We present optical photometric observations of LS I +61 303 spanning ~1.5 yr and contemporaneous Halpha equivalent width (EW Halpha) data. The optical photometry shows, for the first time, that the known orbital modulation suffers a positive orbital phase shift and an increase in flux for data obtained 1-yr apart. This behavior is similar to that already known at radio wavelengths, indicating that the optical flux follows the superorbital variability as well. The orbital modulation of the EW Halpha presents the already known superorbital flux variability but shows, also for the first time, a positive orbital phase shift. In addition, the optical ...

Paredes-Fortuny, X; Bosch-Ramon, V; Casares, J; Fors, O; Nez, J

2015-01-01T23:59:59.000Z

139

ASSOCIATING LONG-TERM {gamma}-RAY VARIABILITY WITH THE SUPERORBITAL PERIOD OF LS I +61 Degree-Sign 303  

SciTech Connect

Gamma-ray binaries are stellar systems for which the spectral energy distribution (discounting the thermal stellar emission) peaks at high energies. Detected from radio to TeV gamma rays, the {gamma}-ray binary LS I +61 Degree-Sign 303 is highly variable across all frequencies. One aspect of this system's variability is the modulation of its emission with the timescale set by the {approx}26.4960 day orbital period. Here we show that, during the time of our observations, the {gamma}-ray emission of LS I +61 Degree-Sign 303 also presents a sinusoidal variability consistent with the previously known superorbital period of 1667 days. This modulation is more prominently seen at orbital phases around apastron, whereas it does not introduce a visible change close to periastron. It is also found in the appearance and disappearance of variability at the orbital period in the power spectrum of the data. This behavior could be explained by a quasi-cyclical evolution of the equatorial outflow of the Be companion star, whose features influence the conditions for generating gamma rays. These findings open the possibility to use {gamma}-ray observations to study the outflows of massive stars in eccentric binary systems.

Ackermann, M.; Buehler, R. [Deutsches Elektronen Synchrotron DESY, D-15738 Zeuthen (Germany); Ajello, M. [Space Sciences Laboratory, 7 Gauss Way, University of California, Berkeley, CA 94720-7450 (United States); Ballet, J.; Casandjian, J. M. [Laboratoire AIM, CEA-IRFU/CNRS/Universite Paris Diderot, Service d'Astrophysique, CEA Saclay, F-91191 Gif sur Yvette (France); Barbiellini, G. [Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34127 Trieste (Italy); Bastieri, D.; Buson, S. [Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy); Bellazzini, R.; Bregeon, J. [Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa (Italy); Bonamente, E.; Cecchi, C. [Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia (Italy); Brandt, T. J. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Brigida, M. [Dipartimento di Fisica ''M. Merlin'' dell'Universita e del Politecnico di Bari, I-70126 Bari (Italy); Bruel, P. [Laboratoire Leprince-Ringuet, Ecole polytechnique, CNRS/IN2P3, F-91128 Palaiseau (France); Caliandro, G. A. [Institute of Space Sciences (IEEE-CSIC), Campus UAB, E-08193 Barcelona (Spain); Cameron, R. A. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Caraveo, P. A. [INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica, I-20133 Milano (Italy); Cavazzuti, E. [Agenzia Spaziale Italiana (ASI) Science Data Center, I-00044 Frascati (Roma) (Italy); Chekhtman, A., E-mail: andrea.caliandro@ieec.uab.es, E-mail: hadasch@ieec.uab.es, E-mail: dtorres@ieec.uab.es [Center for Earth Observing and Space Research, College of Science, George Mason University, Fairfax, VA 22030 (United States); and others

2013-08-20T23:59:59.000Z

140

An investigation of the creep phenomena exhibited by Solenhofen limestone, halite, and cement under medium confining pressures  

E-Print Network (OSTI)

BY SOLENHOFEN LIMESTONE, HALITE, AND CFMI-NT UNDFR MEPIUI CONFINING PRESSURES A THESIS Bv HALCOMBE A. KENDALL A PPROVEO AS TO STYLE AND CONTENT BY AIRMAN OF COMM TTEE EAD OF PEPARTMENT ~M* 19 8 A BSTRACT TABLE OF CONTENTS PAGE 1 INTRODUCT ION... SPECI'i NS. . FIGURE 9 . FAILURE OF HALITE CRYSTALS . . ABSTRACT THE DYNAMICS OF THE CREEP PHENOMENA OF ROCKS I S KNOWN TO BE INTER RELATED WI TH THE NATURAL ENVIROMENTAL COND IT IONG FOUND DEEP IN THE CRUST OF THE EARTH ~ AHONG THESE COND I...

Kendall, Halcombe Augustus

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
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141

Thermal behavior of Al/MoO3 xerogel nanocomposites  

Science Journals Connector (OSTI)

Abstract Solgel process using molybdenum alkoxides was employed to prepare Al/MoO3 xerogel nanocomposites as a thermite with better performance by improvement of interfacial contact area between the oxidizer and fuel. Micromorphology and thermite reaction characteristics of Al/MoO3 xerogel nanocomposites were analyzed by scanning electron microscopy (SEM) and thermogravimetry/differential scanning calorimetry (TG/DSC), respectively. In the present Al/MoO3 xerogel system, it was found that exothermic enthalpy increases as the Al/Mo mole ratio increases and then decreases when Al/Mo mole ratio is larger than 6 indicating that optimum mole ratio of Al/Mo is 6 with reaction enthalpy of 420.58J/g.

Han-Su Seo; Jae-Kyeong Kim; Jun-Woo Kim; Hyoun-Soo Kim; Kee-Kahb Koo

2014-01-01T23:59:59.000Z

142

Neutron Hole States of Mo-93,95  

E-Print Network (OSTI)

I I I0 IO 20 3040 50 60 0 I I I I I I IO 20 30 40 5Q 60 IO 2- 0 I I I lo 20 X) 40 50 60 I j I I I l 0 lo 20 30 4050 60 8, .(deg) 8,~. (deg) {deg) {deg) FIG. 2. Angular distributions for the +Mo(P, d)93Mo reaction. The errors sho....20 l X=2 0.769 2=4 0.8l6 2=2 Mo(d, t) Mo l IGO= P IQ IO? IG 10 IQ 10 IGO? IQ I I I I l.092 2=2+4 = IO IQ)- l.674 All the angular distributions obtained along mith the D%'BA fits for the states analyzed in the "Mo(d, t)9'Mo...

Bindal, P. K.; Youngblood, David H.; Kozub, R. L.

1977-01-01T23:59:59.000Z

143

Temperature-dependent nanocrystal formation in Mo/Si multilayers  

SciTech Connect

We investigated the nanocrystallinity of Mo/Si multilayers as a function of the Mo:Si ratio in the period using grazing incidence and wide angle x-ray diffraction, both for as-deposited samples and after thermal annealing up to 800 deg. C under UHV conditions. The research was performed on multilayers, as applied for extreme UV lithography with period thickness of approximately 7 nm. The as-deposited multilayer nanostructure was found to depend on the Mo to Si layer thickness ratio. For intermediate Mo fractions in the multilayer period, a four layer system is formed, with amorphous Si and polycrystalline Mo layers separated by silicide interfaces, while for low and high Mo fractions, a two component system is formed, respectively, consisting of a pure Mo layer (in the case of a high Mo fraction) or pure Si layer (low Mo fraction) separated by a single silicide interface. Using the crystallographic properties of the multilayer during annealing, we describe the continuous development of the multilayer structure and growth of the silicide interfaces. Our study has led to an explanatory model which is based on the total free energy minimization of the multilayer system. Finally, a phase transition to a crystalline silicide is observed at T>300 deg. C. This phase transition can also be explained by minimization of the total free energy.

Nedelcu, I.; Kruijs, R. W. E. van de; Yakshin, A. E.; Bijkerk, F. [FOM-Institute for Plasma Physics Rijnhuizen, P.O. Box. 1207, 3430 BE Nieuwegein (Netherlands)

2007-12-15T23:59:59.000Z

144

Recovery and utilization of gypsum and limestone from scrubber sludge. Technical report, December 1, 1992--February 28, 1993  

SciTech Connect

Wet flue-gas desulfurization units in coal-fired power plants produce a large amount of sludge which must be disposed of, and which is currently landfilled in most cases. Increasing landfill costs are gradually forcing utilities to find other alternatives. In principle, this sludge can be used to make gypsum (CaSO{sub 4}-2H{sub 2}O) for products such as plaster-of-Paris and wallboard, but only if impurities such as unreacted limestone and soluble salts are removed, and the calcium sulfite (CaSO{sub 3}) is oxidized to calcium sulfate (CaSO{sub 4}). This project is investigating methods for removing the impurities from the sludge so that high-quality, salable gypsum products can be made. Work done in the previous quarter concentrated on developing a dependable technique for analysis of scrubber sludge, so that it would be possible to determine exactly how well a particular purification process was working. This technique was then used to characterize the sludge from a particular Illinois power station. In the current quarter, studies were carried out using froth flotation to produce a product that could be oxidized to high-purity gypsum. These experiments have been quite successful, due to certain properties of the limestone impurity that makes it easier to remove by this method than was expected.

Kawatra, S.K.; Eisele, T.C. [Michigan Technological Univ., Houghton, MI (United States). Dept. of Metallurgical and Materials Engineering; Banerjee, D. [Illinois Clean Coal Inst., Carterville, IL (United States)

1993-05-01T23:59:59.000Z

145

An evaluation of acid frac/matrix stimulation of a tight limestone formation in exploratory wells in Kuwait  

SciTech Connect

With the advent of Kuwait's intensive exploratory activities to locate and test deeper geologic structures, tighter and very low porosity limestone formations were progressively encountered. Most of these hydrocarbon bearing formations initially appeared to be very stubborn and hardly indicated any fluid influx into the well-bore. In certain cases the hydrostatic head was nearly completely removed by unloading the well practically down to perforations, thereby creating optimum draw-down but it either resulted in poor inflow or none at all. In the absence of currently available chemicals, equipment, job design engineering and better understanding of tight carbonate formations and their responses to various acid formulations, some of these could have slipped into unattractive categories. With the implementation of specially designed matrix and acid-frac treatments, these formation have, however, been unmasked and turned out to be highly potential finds now. This paper basically outlines the salient features of theoretical and operational aspects of stimulating and testing some of the very low porosity hard limestone formations in Kuwait recently.

Singh, J.R.

1985-03-01T23:59:59.000Z

146

Pilot-scale Limestone Emission Control (LEC) process: A development project. Volume 1, Main report and appendices A, B, C, and D: Final report  

SciTech Connect

ETS, Inc., a pollution consulting firm with headquarters in Roanoke, Virginia, has developed a dry, limestone-based flue gas desulfurization (FGD) system. This SO{sub 2} removal system, called Limestone Emission Control (LEC), can be designed for installation on either new or existing coal-fired boilers. In the LEC process, the SO{sub 2} in the flue gas reacts with wetted granular limestone that is contained in a moving bed. A surface layer of principally calcium sulfate (CaSO{sub 4}) is formed on the limestone. Periodic removal of this surface layer by mechanical agitation allows high utilization of the limestone granules. A nominal 5,000 acfm LEC pilot plant has been designed, fabricated and installed on the slipstream of a 70,000 pph stoker boiler providing steam to Ohio University`s Athens, Ohio campus. A total of over 90 experimental trials have been performed using the pilot-scale moving-bed LEC dry scrubber as a part of this research project with run times ranging up to a high of 125 hours. SO{sub 2} removal efficiencies as high as 99.9% were achievable for all experimental conditions studied during which sufficient humidification was added to the LEC bed. The LEC process and conventional limestone scrubbing have been compared on an equatable basis using flue gas conditions that would be expected at the outlet of the electrostatic precipitator (ESP) of a 500 MW coal-fired power plant. The LEC was found to have a definite economic advantage in both direct capital costs and operating costs. Based on the success and findings of the present project, the next step in LEC process development will be a full-scale commercial demonstration unit.

Prudich, M.E. [Ohio Univ., Athens, OH (United States); Appell, K.W.; McKenna, J.D. [ETS, Inc., Roanoke, VA (United States)

1994-03-01T23:59:59.000Z

147

LABORATORY INVESTIGATIONS IN SUPPORT OF CARBON DIOXIDE-LIMESTONE SEQUESTRATION IN THE OCEAN  

SciTech Connect

This semi-annual progress reports includes further findings on CO{sub 2}-in-Water (C/W) emulsions stabilized by fine particles. In previous reports we described C/W emulsions using pulverized limestone (CaCO{sub 3}), flyash, and a pulverized magnesium silicate mineral, lizardite, Mg{sub 3}Si{sub 2}O{sub 5}(OH){sub 4}, which has a similar composition as the more abundant mineral, serpentine. All these materials formed stable emulsions consisting of droplets of liquid or supercritical CO{sub 2} coated with a sheath of particles dispersed in water. During this semi-annual period we experimented with pulverized beach sand (10-20 {micro}m particle diameter). Pulverized sand produced an emulsion similar to the previously used materials. The globules are heavier than water, thus they accumulate at the bottom of the water column. Energy Dispersive X-ray (EDX) analysis revealed that the sand particles consisted mainly of SiO{sub 2}. Sand is one of the most abundant materials on earth, so the economic and energy penalties of using it for ocean sequestration consist mainly of the cost of transporting the sand to the user, the capital and operating costs of the pulverizer, and the energy expenditure for mining, shipping and grinding the sand. Most likely, sand powder would be innocuous to marine organisms if released together with CO{sub 2} in the deep ocean. We examined the effects of methanol (MeOH) and monoethanolamine (MEA) on emulsion formation. These solvents are currently used for pre- and post-combustion capture of CO{sub 2}. A fraction of the solvents may be captured together with CO{sub 2}. A volume fraction of 5% of these solvents in a mix of CO{sub 2}/CaCO{sub 3}/H{sub 2}O had no apparent effect on emulsion formation. Previously we have shown that a 3.5% by weight of common salt (NaCl) in water, simulating seawater, also had no appreciable effect on emulsion formation. We investigated the formation of inverted emulsions, where water droplets coated with pulverized materials are dispersed in liquid or supercritical CO{sub 2}. This is a Water-in-CO{sub 2} emulsion (W/C) stabilized by particles. For a W/C emulsion it is necessary to employ hydrophobic particles, where the particles are primarily wetted by CO{sub 2}. We used the following hydrophobic particles: carbon black, coal dust, and Teflon. All materials were either obtained as fine particles or ground to 10-20 {micro}m size. All these hydrophobic particles produced a stable W/C emulsion.

Dan Golomb; Eugene Barry; David Ryan; Carl Lawton; Peter Swett; Huishan Duan; Matthew Woodcock

2005-04-01T23:59:59.000Z

148

Laboratory Investigations in Support of Carbon Dioxide-Limestone Sequestration in the Ocean  

SciTech Connect

This semi-annual progress reports includes further findings on CO{sub 2}-in-Water emulsions stabilized by fine particles of limestone (CaCO{sub 3}). Specifically, here we report on the tests performed in the DOE National Energy Technology Laboratory High Pressure Water Tunnel Facility (HPWTF) using a Kenics-type static mixer for the formation of a CO{sub 2}-H{sub 2}O emulsion stabilized by fine particles of CaCO{sub 3}. The tested static mixer has an ID of 0.5 cm, length 23.5 cm, number of baffles 27. Under pressure, a slurry of CaCO{sub 3} particles (mean particle size 6 {micro}m) in reverse osmosis (RO) water and liquid CO{sub 2} were co-injected into the mixer. From the mixer, the resulting emulsion flowed into the HPWTF, which was filled with RO water kept at 6.8 MPa pressure and 4, 8 or 12 C. The emulsion plume was photographed by three video cameras through spy windows mounted on the wall of the HPWTF. The mixer produced an emulsion consisting of tiny CO{sub 2} droplets sheathed with a layer of CaCO{sub 3} particles dispersed in water. The sheathed droplets are called globules. The globules diameter was measured to be in the 300-500 {micro}m range. The globules were sinking in the HPWTF, indicating that they are heavier than the ambient water. The tests in the HPWTF confirmed that the Kenics-type static mixer is an efficient device for forming a CO{sub 2}-H{sub 2}O emulsion stabilized by fine particles of CaCO{sub 3}. The static mixer may prove to be a practical device for sequestering large quantities of CO{sub 2} in the deep ocean in the form of a CO{sub 2}-H{sub 2}O-CaCO{sub 3} emulsion. The static mixer can be mounted at the end of pipelines feeding the mixer. The static mixer has no moving parts. The pressure drop across the mixer that is necessary to sustain good mixing is created by the hydrostatic pressure of liquid CO{sub 2} and the slurry of CaCO{sub 3} in the pipes that feed the mixer. The tests in the HPWTF demonstrated that the emulsion plume is heavier than ambient seawater, hence the plume will sink to greater depth from the release point. Preliminary modeling indicates that an emulsion plume released at 500 m depth (the minimum depth required to prevent liquid CO{sub 2} flashing into vapor) may sink hundreds of meters before the plume comes to rest in the density stratified ocean water. Furthermore, tests in our laboratory showed that the emulsion is slightly alkaline, not acidic, because of the excess of CaCO{sub 3} particles present in the plume. Thus, the release of the CO{sub 2}-H{sub 2}OCaCO{sub 3} emulsion in the deep ocean is not likely to acidify the seawater around the release point. The possible acidification of seawater is the major environmental hazard if pure liquid CO{sub 2} were released in the deep ocean.

Dan Golomb; Eugene Barry; David Ryan; Stephen Pennell; Peter Swett; Huishan Duan; Michael Woods

2006-04-01T23:59:59.000Z

149

Accretion vs colliding wind models for the gamma-ray binary LS I +61 303: an assessment  

E-Print Network (OSTI)

LS I +61 303 is a puzzling Be/X-ray binary with variable gamma-ray emission at up TeV energies. The nature of the compact object and the origin of the high-energy emission are unclear. One family of models invokes particle acceleration in shocks from the collision between the B-star wind and a relativistic pulsar wind, while another centers on a relativistic jet powered by accretion. Recent high-resolution radio observations showing a putative "cometary tail" pointing away from the Be star near periastron have been cited as support for the pulsar-wind model. We wish here to carry out a quantitative assessment of these competing models for this extraordinary source. We apply a 3D SPH code for dynamical simulations of both the pulsar-wind-interaction and accretion-jet models. The former yields a description of the shape of the wind-wind interaction surface. The latter provides an estimation of the accretion rate. The results allow critical evaluation of how the two distinct models confront the data in various wavebands under a range of conditions. When one accounts for the 3D dynamical wind interaction under realistic constraints for the relative strength of the B-star and pulsar winds, the resulting form of the interaction front does not match the putative "cometary tail" claimed from radio observations. On the other hand, dynamical simulations of the accretion-jet model indicate that the orbital phase variation of accretion power includes a secondary broad peak well away from periastron, thus providing a plausible way to explain the observed TeV gamma ray emission toward apastron. We conclude that the colliding-wind model is not clearly established for LS I +61 303, while the accretion-jet model can reproduce many key characteristics of the observed TeV gamma-ray emission.

G. E. Romero; A. T. Okazaki; M. Orellana; S. P. Owocki

2007-06-09T23:59:59.000Z

150

DOE - Office of Legacy Management -- Rogers Iron Works Co - MO 10  

Office of Legacy Management (LM)

Rogers Iron Works Co - MO 10 Rogers Iron Works Co - MO 10 FUSRAP Considered Sites Site: ROGERS IRON WORKS CO. (MO.10 ) Elimination from consideration under FUSRAP Designated Name: Not Designated Alternate Name: Rogers Iron Co. MO.10-1 Location: Joplin , Missouri MO.10-1 Evaluation Year: 1990 MO.10-2 MO.10-3 Site Operations: Tested C-liner crushing methods. MO.10-1 Site Disposition: Eliminated - Potential for contamination considered remote based on limited quantities of material handled MO.10-3 MO.10-4 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium (Trace Amounts) MO.10-2 Radiological Survey(s): None Indicated Site Status: Elimination from consideration under FUSRAP Also see Documents Related to ROGERS IRON WORKS CO. MO.10-1 - National Lead Company of Ohio Analytical Data Sheet 9908;

151

Co-Mo Electric Cooperative - Residential Energy Efficiency Rebate Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Co-Mo Electric Cooperative - Residential Energy Efficiency Rebate Co-Mo Electric Cooperative - Residential Energy Efficiency Rebate Program Co-Mo Electric Cooperative - Residential Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Cooling Maximum Rebate Geothermal Heat Pumps: 10 ton maximum for Residential, 50 ton maximum for Commercial Program Info State Missouri Program Type Utility Rebate Program Rebate Amount Room AC: $50 Water Heater: $50 Air Source Heat Pumps: $150 per ton Dual Fuel Air Source Heat Pumps: $300 per ton Geothermal Heat Pumps (Closed Loop): up to $850 per ton Geothermal Heat Pumps (Open Loop or Replacement): $150 per ton Provider Co-Mo Electric Cooperative Co-Mo Electric Cooperative provides rebates to residential and commercial

152

Microsoft Word - Poster Abstract_2010_MO-SCI.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

* * Presenter High-Temperature Viscous Sealing Glasses for Solid Oxide Fuel Cells Cheol-Woon Kim * , Cindy L. Schwartz, Joe Szabo, Kevin S. Barr, and Ted E. Day MO-SCI Corporation, Rolla, MO 65401 * ckim@mo-sci.com; (573) 364-2338 Richard K. Brow ** and Zhongzhi Tang Department of Materials Science and Engineering and the Graduate Center for Materials Research, Missouri University of Science and Technology, Rolla, MO 65409-1170 ** brow@mst.edu; (573) 341-6812 MO-SCI Corporation and the Missouri University of Science and Technology successfully identified and tested several glass compositions that could be used as viscous seals for Solid Oxide Fuel Cells (SOFCs) through a SBIR Phase I project (DE-SC0002491). The glasses possess desirable viscosity characteristics- that is, they have softening points in the temperature range

153

Comparison of the morphology of alkalisilica gel formed in limestones in concrete affected by the so-called alkalicarbonate reaction (ACR) and alkalisilica reaction (ASR)  

SciTech Connect

The morphology of alkalisilica gel formed in dolomitic limestone affected by the so-called alkalicarbonate reaction (ACR) is compared to that formed in a siliceous limestone affected by alkalisilica reaction (ASR). The particle of dolomitic limestone was extracted from the experimental sidewalk in Kingston, Ontario, Canada that was badly cracked due to ACR. The siliceous limestone particle was extracted from a core taken from a highway structure in Quebec, affected by ASR. Both cores exhibited marked reaction rims around limestone particles. The aggregate particles were polished and given a light gold coating in preparation for examination in a scanning electron microscope. The gel in the ACR aggregate formed stringers between the calcite crystals in the matrix of the rock, whereas gel in ASR concrete formed a thick layer on top of the calcite crystals, that are of the same size as in the ACR aggregate.

Grattan-Bellew, P.E., E-mail: p.grattan-bellew@sympatico.ca [Materials and Petrographic Research G-B Inc., 472 Edison Avenue, Ottawa, ON, Canada K2A 1T9 (Canada); Chan, Gordon [NRC Construction, Bldg., M20, 1200 Montreal Road, Ottawa, ON, Canada K1A 0R6 (Canada)] [NRC Construction, Bldg., M20, 1200 Montreal Road, Ottawa, ON, Canada K1A 0R6 (Canada)

2013-05-15T23:59:59.000Z

154

MattssonMoVacPrague2009.ppt  

National Nuclear Security Administration (NNSA)

Thomas R Mattsson Thomas R Mattsson Sandia National Laboratories Albuquerque, NM, USA Nils Sandberg -- KTH, Stockholm Richard Armiento -- Univ. Bayreuth, Germany Ann Mattsson -- Sandia National Laboratories Self-diffusion in Mo using the AM05 density functional Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. Joint U.S. Russia Conference on Advances in Materials Science Prague, Czech Republic Aug 31-Sept 3, 2009 SAND 2009-2197 C, 2009-3883 C, 2009-4713 C, and 2002-1323 P Vacancy mediated diffusion is the main mechanism for mass transport in solids *Vacancies are important for *Self-diffusion *Defect migration *Radiation damage/ swelling

155

Mo Year Report Period: EIA ID NUMBER:  

U.S. Energy Information Administration (EIA) Indexed Site

Version No: 2013.01 Mo Year Report Period: EIA ID NUMBER: http://www.eia.gov/survey/form/eia_14/instructions.pdf Mailing Address: Secure File Transfer option available at: (e.g., PO Box, RR) https://signon.eia.doe.gov/upload/noticeoog.jsp Electronic Transmission: The PC Electronic Zip Code - Data Reporting Option (PEDRO) is available. If interested in software, call (202) 586-9659. Email form to: OOG.SURVEYS@eia.doe.gov - - - - Fax form to: (202) 586-9772 Mail form to: Oil & Gas Survey Email address: U.S. Department of Energy Ben Franklin Station PO Box 279 Washington, DC 20044-0279 Questions? Call toll free: 1-800-638-8812 PADD 4 Type of Report (Check One ): (Thousands of dollars) (Thousands of barrels) PADD 2 PADD 3 PAD DISTRICT (a) Revision to Report:

156

Deformation and Fracture Properties in Neutron Irradiated Pure Mo and Mo Alloys  

SciTech Connect

The effect of neutron irradiation on the mechanical properties of select molybdenum materials, pure low carbon arc-cast (LCAC) Mo, Mo-0.5% Ti-0.1% Zr (TZM) alloy, and oxide dispersion-strengthened (ODS) Mo alloy, was characterized by analyzing the temperature dependence of mechanical properties. This study assembles the tensile test and analysis data obtained through multiple series of irradiation and post-irradiation experiments. Tensile specimens in stress-relieved conditions with longitudinal (LSR) and transverse (TSR) directions were irradiated in high flux isotope reactor (HFIR) at temperatures ranging 270 to 1100oC to 0.6 -13.1 dpa. Also, the recrystallized LCAC Mo specimens in the longitudinal direction (LR) were also irradiated up to 0.28 dpa at ~80oC. Tensile tests were performed at temperatures ranging from -194 oC to 1400oC. Analysis results indicate that the irradiation at temperatures below 700oC increased strength significantly, up to 170%, while the increase of yield stress by irradiations at higher temperature was not significant. The plastic instability stress was strongly dependent on test temperature but was nearly independent of irradiation dose and temperature. The true fracture stress was dependent on test temperature to a lesser degree than was the yield stress and plastic instability stress. It was also slightly impacted by irradiation, depending on both irradiation and test temperatures. Brittle fracture often occurred in the LSR specimens tested at room temperature or lower after low temperature irradiation, while it was observed in many irradiated TSR specimens over the whole test temperature range. The ODS-LSR specimens showed the highest resistance to irradiation embrittlement due to relatively higher fracture stress. The critical temperature for shear failure (CTSF) was defined and evaluated for the materials, and the CTSF values were compared with the ductile to brittle transition temperatures (DBTT) based on ductility data.

Byun, Thak Sang [ORNL; Li, Meimei [ORNL; Cockeram, Brian V [Bechtel-Bettis, Inc.; Snead, Lance Lewis [ORNL

2008-01-01T23:59:59.000Z

157

Pneumatic conveying of coal and coal-limestone mixtures as applied to atmospheric fluidized-bed combustion. [Effects of moisture, velocity, particle size  

SciTech Connect

Pneumatic conveying experiments with coal and coal-limestone mixtures were performed on a conveying system designed to represent the feed lines in the Tennessee Valley Authority 20 MW atmospheric fluidized bed combustor. The experimental conditions were chosen to cover the anticipated combustor operating ranges. The results have led to a fundamental understanding of the operating limits associated with coal surface moisture, air velocity, coal and limestone fines, solids to air ratio, and limestone to coal ratio. Coal surface moisture was found to be the most important parameter affecting handling and transport. Specific upper limits for surface moisture were established. It was demonstrated that addition of dry limestone can reduce the conveying problems associated with wet coal. The air velocities causing saltation and surge flow were determined for a variety of conveying conditions. These velocities were related qualitatively to solids to air ratio, particle size, and surface moisture. Conveying pressure drop was also measured for a variety of conditions. In the absence of saltation, the horizontal, frictional pressure drop was only a function of the solids to air ratio and the air flow conditions. Comparison of the ORNL pressure drop data with the results of other investigators had led to the conclusion that there are two basic modes of flow in dilute-phase conveying; a primarily viscous mode and a primarily inertial mode. A general pressure drop model has been developed for the inertial mode.

Daw, C S; Thomas, J F

1982-01-01T23:59:59.000Z

158

DOE - Office of Legacy Management -- Spencer Chemical Co - MO 0-01  

Office of Legacy Management (LM)

MO 0-01 MO 0-01 FUSRAP Considered Sites Site: SPENCER CHEMICAL CO. (MO.0-01) Eliminated from further consideration under FUSRAP - an AEC licensed operation Designated Name: Not Designated Alternate Name: Jayhawk Works MO.0-01-1 Location: Joplin , Missouri MO.0-01-1 Evaluation Year: 1985 MO.0-01-2 Site Operations: Processed enriched uranium (UF-6) and scrap to produce primarily uranium dioxide (UO-2) under AEC licenses. MO.0-01-3 MO.0-01-4 Site Disposition: Eliminated - No Authority MO.0-01-2 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Normal and Enriched Uranium, Thorium MO.0-01-6 Radiological Survey(s): Yes MO.0-01-5 Site Status: Eliminated from further consideration under FUSRAP - an AEC licensed operation Also see Documents Related to SPENCER CHEMICAL CO.

159

DOE - Office of Legacy Management -- Tyson Valley Powder Farm - MO 11  

Office of Legacy Management (LM)

Tyson Valley Powder Farm - MO 11 Tyson Valley Powder Farm - MO 11 FUSRAP Considered Sites Site: TYSON VALLEY POWDER FARM (MO.11) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: St. Louis County , Missouri MO.11-1 Evaluation Year: 1987 MO.11-2 Site Operations: Storage of C-Special material (residue from production of uranium metal). MO.11-1 MO.11-2 MO.11-3 Site Disposition: Eliminated - Referred to Army Corps of Engineers MO.11-2 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium MO.11-3 Radiological Survey(s): None Indicated Site Status: Eliminated from further consideration under FUSRAP Also see Documents Related to TYSON VALLEY POWDER FARM MO.11-1 - Letter; Dickenson to Duff; Subject: Granted continued use

160

The apparent discontinuity in the periodicity of the GeV emission from LS I +61{\\deg}303  

E-Print Network (OSTI)

The gamma-ray binary LS I +61{\\deg}303 shows a discontinuity of the periodicity in its GeV emission. In this paper, we show that during the epochs when the timing analysis fails to determine the orbital periodicity, the periodicity is in fact present in the two orbital phase intervals $\\Phi = 0.0-0.5$ and $\\Phi = 0.5-1.0$. That is, there are two periodic signals, one towards periastron (i.e., $\\Phi = 0.0-0.5$) and another one towards apastron ($\\Phi = 0.5-1.0$). The apastron peak shows the same orbital shift as the radio outburst and, in addition, reveals the same two periods $P_1$ and $P_2$ that are present in the radio data. The gamma-ray emission of the apastron peak normally just broadens the emission of the peak around periastron. Only when it appears at $\\Phi = 0.8-1.0$, because of the orbital shift, it is detached enough from the first peak to become recognizable as a second orbital peak, which is the reason why the timing analysis fails. Two gamma-ray peaks along the orbit are predicted by the two-pea...

Jaron, Frederic

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Doping mechanisms in graphene-MoS{sub 2} hybrids  

SciTech Connect

We present a joint theoretical and experimental investigation of charge doping and electronic potential landscapes in hybrid structures composed of graphene and semiconducting single layer molybdenum disulfide (MoS{sub 2}). From first-principles simulations, we find electron doping of graphene due to the presence of rhenium impurities in MoS{sub 2}. Furthermore, we show that MoS{sub 2} edges give rise to charge reordering and a potential shift in graphene, which can be controlled through external gate voltages. The interplay of edge and impurity effects allows the use of the graphene-MoS{sub 2} hybrid as a photodetector. Spatially resolved photocurrent signals can be used to resolve potential gradients and local doping levels in the sample.

Sachs, B., E-mail: bsachs@physnet.uni-hamburg.de; Lichtenstein, A. I. [I. Institut fr Theoretische Physik, Universitt Hamburg, Jungiusstrae 9, D-20355 Hamburg (Germany)] [I. Institut fr Theoretische Physik, Universitt Hamburg, Jungiusstrae 9, D-20355 Hamburg (Germany); Britnell, L.; Eckmann, A.; Novoselov, K. S. [School of Physics and Astronomy, University of Manchester, M13 9PL Manchester (United Kingdom)] [School of Physics and Astronomy, University of Manchester, M13 9PL Manchester (United Kingdom); Wehling, T. O. [Institut fr Theoretische Physik, Universitt Bremen, Otto-Hahn-Allee 1, D-28359 Bremen (Germany) [Institut fr Theoretische Physik, Universitt Bremen, Otto-Hahn-Allee 1, D-28359 Bremen (Germany); Bremen Center for Computational Materials Science, Universitt Bremen, Am Fallturm 1a, D-28359 Bremen (Germany); Jalil, R.; Belle, B. D. [Manchester Centre for Mesoscience and Nanotechnology, University of Manchester, Manchester M13 9PL (United Kingdom)] [Manchester Centre for Mesoscience and Nanotechnology, University of Manchester, Manchester M13 9PL (United Kingdom); Katsnelson, M. I. [Institute for Molecules and Materials, Radboud University of Nijmegen, Heijendaalseweg 135, 6525 AJ Nijmegen (Netherlands)] [Institute for Molecules and Materials, Radboud University of Nijmegen, Heijendaalseweg 135, 6525 AJ Nijmegen (Netherlands)

2013-12-16T23:59:59.000Z

162

9 Cr-- 1 Mo steel material for high temperature application  

DOE Patents (OSTI)

One or more embodiments relates to a high-temperature, titanium alloyed, 9 Cr-1 Mo steel exhibiting improved creep strength and oxidation resistance at service temperatures up to 650.degree. C. The 9 Cr-1 Mo steel has a tempered martensite microstructure and is comprised of both large (0.5-3 .mu.m) primary titanium carbides and small (5-50 nm) secondary titanium carbides in a ratio of. from about 1:1.5 to about 1.5:1. The 9 Cr-1 Mo steel may be fabricated using exemplary austenizing, rapid cooling, and tempering steps without subsequent hot working requirements. The 9 Cr-1 Mo steel exhibits improvements in total mass gain, yield strength, and time-to-rupture over ASTM P91 and ASTM P92 at the temperature and time conditions examined.

Jablonski, Paul D; Alman, David; Dogan, Omer; Holcomb, Gordon; Cowen, Christopher

2012-11-27T23:59:59.000Z

163

EUV damage threshold measurements of Mo/Si multilayer mirrors  

Science Journals Connector (OSTI)

An EUV Schwarzschild objective consisting of two spherical, annular mirror substrates coated with Mo/Si multilayers (reflectivity...R?0.65@13.5nm) provides high EUV fluences [13]. The incidence angles on the sam...

Matthias Mller; Frank Barkusky; Torsten Feigl; Klaus Mann

2012-08-01T23:59:59.000Z

164

Q value of the 100Mo Double-Beta Decay  

E-Print Network (OSTI)

Penning trap measurements using mixed beams of 100Mo - 100Ru and 76Ge - 76Se have been utilized to determine the double-beta decay Q-values of 100Mo and 76Ge with uncertainties less than 200 eV. The value for 76Ge, 2039.04(16) keV is in agreement with the published SMILETRAP value. The new value for 100Mo, 3034.40(17) keV is 30 times more precise than the previous literature value, sufficient for the ongoing neutrinoless double-beta decay searches in 100Mo. Moreover, the precise Q-value is used to calculate the phase-space integrals and the experimental nuclear matrix element of double-beta decay.

S. Rahaman; V. -V. Elomaa; T. Eronen; J. Hakala; A. Jokinen; J. Julin; A. Kankainen; A. Saastamoinen; J. Suhonen; C. Weber; J. yst

2007-12-20T23:59:59.000Z

165

The effects of calcitic and dolomitic limestone rates and particle sizes on soil chemical changes, plant nutrient concentration, and yields of corn and Coastal bermudagrass on two acid Texas soils  

E-Print Network (OSTI)

Directed by Dr. Warren B. Anderson Two, 4, snd 6 tons/ acre of calcitic and dolomitic limestone in three particle size ranges were disked into a Katy fine sandy loam prior to planting corn. Identical treatments were broadcast on a Boy loamy fine sand... neutralized soil acidity faster than did the dolomitic source. All calcitic limestone treatments significantly increased Ca in the surface 6 inches of soil. The 4- and 6-ton/acre rates of fine, and the 6-ton/acre rate of medium calcitic limestone...

Haby, Vincent A

2012-06-07T23:59:59.000Z

166

1 Mo 1 Do 1 Sa 1 Di 1 Fr 1 Fr 1 Mo 1 Mi 1 Sa 1 Mo 1 Do 1 So 2 Di 2 Fr 2 So 2 Mi 2 Sa 2 Sa 2 Di 2 Do 2 So 2 Di 2 Fr 2 Mo  

E-Print Network (OSTI)

1 Mo 1 Do 1 Sa 1 Di 1 Fr 1 Fr 1 Mo 1 Mi 1 Sa 1 Mo 1 Do 1 So 2 Di 2 Fr 2 So 2 Mi 2 Sa 2 Sa 2 Di 2 Do 2 So 2 Di 2 Fr 2 Mo 3 Mi 3 Sa 3 Mo 3 Do 3 So 3 So 3 Mi 3 Fr 3 Mo 3 Mi 3 Sa 3 Di 4 Do 4 So 4 Di 4 Fr 4 Mo 4 Mo 4 Do 4 Sa 4 Di 4 Do P StAU4 So 4 Mi 5 Fr 5 Mo 5 Mi 5 Sa 5 Di 5 Di 5 Fr 5 So 5 Mi 5 Fr 5 Mo

Mayberry, Marty

167

A compact pulsar wind nebula model of the gamma-ray loud binary LS I +61 303  

E-Print Network (OSTI)

We study a model of of LS I +61 303 in which its radio to TeV emission is due to interaction of a relativistic wind from a young pulsar with the wind from its companion Be star. We assume the fast polar wind is clumpy, which is typical for radiatively-driven winds. The clumpiness cause the two winds to mix. The relativistic electrons from the pulsar wind are retained in the moving clumps by inhomogeneities of the magnetic field, which explains the X-ray variability observed on time scales much shorter than the orbital period. We calculate detailed inhomogeneous spectral models reproducing the average broad-band spectrum from radio to TeVs. Given the uncertainties the form of the distribution of relativistic electrons, the X-ray spectrum could be dominated by either Compton or synchrotron emission. The recent Fermi observations constrain the high-energy cut-off in the electron distribution to be at the Lorentz factor of 2 10^4 or 10^8 in the former and latter model, respectively. We provide formulae comparing the losses of the relativistic electrons due to Compton, synchrotron and Coulomb processes vs. the distance from the Be star. We calculate the optical depth of the wind to free-free absorption, showing that it will suppress most of the radio emission within the orbit. We point out the importance of Compton and Coulomb heating of the stellar wind within and around the gamma-ray emitting region. Then, we find the most likely mechanism explaining the orbital modulation at TeV energies is anisotropy of emission.

A. A. Zdziarski; A. Neronov; M. Chernyakova

2008-02-08T23:59:59.000Z

168

The production of higher alcohols from syngas using potassium promoted Co/Mo/A12O3 and Rh/Co/Mo/A12O3  

Science Journals Connector (OSTI)

The optimized compositions K(4.9)/Co(2.7)/Mo(6.4)/A1203(gamma) and K(1.2)/ Rh(1.1)/Co(0.6)/Mo(5.7)/A1203(gamma) are both productive catalysts for higher alcohols. The incorporation of rhodium into the K/Co/Mo/A12

D. A. Storm

1995-01-01T23:59:59.000Z

169

Coated U(Mo) Fuel: As-Fabricated Microstructures  

SciTech Connect

As part of the development of low-enriched uranium fuels, fuel plates have recently been tested in the BR-2 reactor as part of the SELENIUM experiment. These fuel plates contained fuel particles with either Si or ZrN thin film coating (up to 1 m thickness) around the U-7Mo fuel particles. In order to best understand irradiation performance, it is important to determine the starting microstructure that can be observed in as-fabricated fuel plates. To this end, detailed microstructural characterization was performed on ZrN and Si-coated U-7Mo powder in samples taken from AA6061-clad fuel plates fabricated at 500C. Of interest was the condition of the thin film coatings after fabrication at a relatively high temperature. Both scanning electron microscopy and transmission electron microscopy were employed. The ZrN thin film coating was observed to consist of columns comprised of very fine ZrN grains. Relatively large amounts of porosity could be found in some areas of the thin film, along with an enrichment of oxygen around each of the the ZrN columns. In the case of the pure Si thin film coating sample, a (U,Mo,Al,Si) interaction layer was observed around the U-7Mo particles. Apparently, the Si reacted with the U-7Mo and Al matrix during fuel plate fabrication at 500C to form this layer. The microstructure of the formed layer is very similar to those that form in U-7Mo versus Al-Si alloy diffusion couples annealed at higher temperatures and as-fabricated U-7Mo dispersion fuel plates with Al-Si alloy matrix fabricated at 500C.

Emmanuel Perez; Dennis D. Keiser, Jr.; Ann Leenaers; Sven Van den Berghe; Tom Wiencek

2014-04-01T23:59:59.000Z

170

A study of the effects of limestone rock asphalt screenings on the structural properties of hot-mix asphaltic concrete made with siliceous materials  

E-Print Network (OSTI)

School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1958 Major Subject: Civil Engineering A STUDY OF THE EFFECTS OF LIMESTONE ROCK ASPHALT SCREENINGS... to Bob M. Gallaway, Associate Pro- fessor of Civil Engineering, without whose guidance and inspiration this work would not have been possible; to Charles J. Keese, Asso- ciate Professor of Civil Engineering, for valued advice and criticism; to Dr. E...

Albritton, Oscar Willard

1958-01-01T23:59:59.000Z

171

Limestone calcination with CO{sub 2} capture (II): decomposition in CO{sub 2}/steam and CO{sub 2}/N{sub 2} atmospheres  

SciTech Connect

Decomposition of limestone particles (0.25-0.5 mm) in a steam dilution atmosphere (20-100% steam in CO{sub 2}) was investigated by using a continuously operating fluidized bed reactor for CO{sub 2} capture. The decomposition conversion of limestone increased as the steam dilution percentage in the CO{sub 2} supply gas increased. At a bed temperature of 1193 K, the conversions were 72% without dilution (100% CO{sub 2}) and 98% with 60% steam dilution. The decomposition conversions obtained with steam dilution and N{sub 2} dilution differed significantly, and this result is explained in terms of the difference between the heat transfer to particle in steam and N{sub 2} dilution atmosphere. The reactivities of the CaO produced from limestone decomposition with steam dilution and without dilution (100% CO{sub 2}) were tested by means of hydration and carbonation reactions. In the hydration test, the time required for complete conversion (CaO{yields}Ca(OH){sub 2}) of the CaO produced by steam dilution was approximately half that required for the CaO produced without dilution. In the carbonation test, carbonation conversion (CaO{yields}CaCO{sub 3}) of the CaO produced by steam dilution was approximately 70%, whereas the conversion was approximately 40% for the CaO produced without dilution. 17 refs., 8 figs., 5 tabs.

Yin Wang; Shiying Lin; Yoshizo Suzuki [National Institute of Advanced Industrial Science and Technology, Ibaraki (Japan)

2008-07-15T23:59:59.000Z

172

Investigation of the reaction zone between TiAl and Mo  

SciTech Connect

Pure Mo was incorporated in TiAl matrix via two different routes: (1) hot pressing of alternately sandwiched Ti-Al sheets and Mo foils; and (2) coextrusion and heat treatment of Ti-Al green compact and Mo rod. The reaction zone between TiAl and Mo is found to contain two intermetallic phases: {beta}-(Mo,Ti)Al and {rho}-(Mo,Ti){sub 3}Al. The {beta}-{rho} boundary is incoherent, whereas the TiAl-{beta} and {rho}-Mo boundaries are semicoherent. The reaction zone grows with increasing heat-treatment time in a parabolic form. The incorporated Mo exhibits lower hardness than the TiAl matrix, implying that ductilizing and toughening of TiAl by introducing Mo as a ductile reinforcement are possible.

Hsu, F.Y.; Klaar, H.J. [Aachen Univ. of Technology (Germany); Wang, G.X. [Zhejiang Univ., Hangzhou (China). Dept. of Materials Science and Engineering; Pirwitz, F. [GKSS Research Center, Geesthacht (Germany). Inst. for Materials Research

1996-08-01T23:59:59.000Z

173

LS-l36  

NLE Websites -- All DOE Office Websites (Extended Search)

l36 l36 December 1988 Ambient Ground Motion at the 7 GeV Site at Argonne National Laboratory over Extended TIe Periods by J. A. Jendrzejczyk,Z. Nagy, and R. K. Smith Background Successful operation of the APS facilty requires a very stable particle beam. Vibration coupled through mechanical systems, such as magnet supports, beam tube supports, and other paths can cause deterioration of the particle beam. There are two sources of vibration: external, or farfìeld, which is generated external to the APS site and internal, or near field, which is generated on site and associated with operation of the facility. ì. " Internal vibration sources can be controlled or minimied using good design ',, practices to eliminate or reduce vibration amplitudes of machinery

174

LS-16 S. Kim  

NLE Websites -- All DOE Office Websites (Extended Search)

S. Kim March 20, 1985 Parameters and Spectral Brilliance of the Aladdin Undulators This note shows tunable ranges of photon energies and the brilliances for different undulator periods and electron beam parameters. 1. Undulator Parameter Undulator parameters of Table 1 are generated with a minimum gap of 3.5 em and with a peak field B on the axis of the undulator where B 1.30 x 0.95 exp(- ng/A u )' undulator gap, undulator period. (1) Here a filling factor for the assembly of the undulator is assumed to be 95%. 2. Electron Beam Parameter The horizontal and vertical beam emittances are determined by a coupling constant K2 and natural emittance £xo: ~ / (1 + K2), c.. xo Parameters of beam size and beam divergence are related as = (6 £ )1/2 x,y ,

175

ls.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

MEASUREMENT MEASUREMENT OF GAS BREMSSTRAHLUNG FROM THE INSERTION DEVICE BEAMLINES OF THE ADVANCED PHOTON SOURCE M. Pisharody and P.K. Job Experimental Facilities Division Advanced Photon Source S. Magill, J. Proudfoot, and R.Stanek High Energy Physics Division Argonne National Laboratory 9700 S. Cass Ave., Argonne, IL-60439 March 1997 Acknowledgements The authors wish to thank Mark Kee e for his assistance in designing the hardware for the lead glass calorimeter mount, Bill McHargue for providing the attenuator circuit module and associated electronics, and Brian Rodricks for his help with the data acquisition DAQ components and software. We are also thankful to Ed Se- mones for his help in the residual gas analysis RGA e ort, and Don Jankowski for his technical assistance. Special acknowledgements to Harold Moe for his valuable suggestions during the course of

176

LS Note NNN  

NLE Websites -- All DOE Office Websites (Extended Search)

8 8 ACIS Design Compliance with Principal Accelerator Safety Interlock Design Requirements Martin Knott December 2004 ______________________________________________________________________________ Table of Contents 1 Introduction.............................................................................................................................. 2 2 Compliance with Accelerator Safety Interlock Design Requirements .................................... 2 2.1 Accelerator Safety Order 5480.25 Guidance for an Accelerator Safety Program, September 1, 1993........................................................................................... 2 2.2 SLAC 327 Health Physics Manual of Good Practices for Accelerator Facilities, 1988..............................................................................................................

177

LS-9 T. Khoe  

NLE Websites -- All DOE Office Websites (Extended Search)

9 9 T. Khoe January 22, 1985 The Effects of Trapped Ions in an Electron Storage Ring The fast electrons of the beam will ionize the residual gas molecules. The detached electron will be lost on the vacuum chamber wall. The slow ions will be focused when they are in the potential well of the electron beam and defocused during the remaining time. The equations of motion of the ions may be written in the form 2 l-lhere l.Il x 2 -l.Il (t) z. z a a+b when the ions are in the potential well of the electron beam and 2 l.Il X 2 nie b 2 - "EM a+b ' l.Il z o 2 n.e 1 a - €M a+b o when the ions are between the electron bunches. z Nota tion: ne = electron densi ty ni = ion density a = radial beam size b vertical beam size H ion mass eo _1_10- 9 361T In general, the vertical emittance is smaller than the radial emittance. For

178

LS-1.50  

NLE Websites -- All DOE Office Websites (Extended Search)

.50 .50 H. Bizek and \V. Chou T1mp h 1 aan v ................. '-', ...I..'-"VV Study of Transverse Loss Factor for the Tapered Sections in the APS Storage Ring 1 Transverse loss factor power lavv In the 7-GeV Advanced Photon Source (APS) storage ring, the tapered sections are considered to be the main contributor to the transverse impedance. The· structure is shown in Fig. 1. The large tube represents the beam chamber, and the small one the insertion device (ID) section. Both are connected by a tapered transition with angle B. This note presents a power law dependence of the transverse loss factor on the taper angle for this structure. \Ve define a normalized taper angle ¢ by (1) which is dimensionless and varies between 1 and 0 when the transition length L changes

179

LS-104 S. Ohnuma  

NLE Websites -- All DOE Office Websites (Extended Search)

4 4 S. Ohnuma February 1988 Correction of Closed Orbit Distortions in the Horizontal Direction 1. Many computer programs with a vari ety of algorithms exi st for controlling the closed orbit in synchrotrons. One of the more recent reports on this subject explains how the closed orbit was established in the Fermilab Tevatron on "Day One" and how it is manipulated during routine operations.1 In most synchrotrons, the beam position monitors and the steering dipoles are located side by side and algorithms such as the familiar three-bump orbits are easy to understand. When a beam is kicked at alocationIIA", the resulting beam displacement at another 1 ocation -B" downstreami s proportional to sin(à~) where à~ is the betatron phase advance from

180

LS-I06  

NLE Websites -- All DOE Office Websites (Extended Search)

6 6 5. Ohnuma February 1988 Tune Shifts Caused by Horizontal Closed. Orbit Deviations in Sextupoles I. Introduction One of the uncomfortable features of the Chasman-Green lattice is that the chromaticity-correcting sextupoles are all very strong compared with those in the FOOD-type lattice. Because of their strengths, when their arrangement creates certai n harmoni c components, the dynami c aperture is severely reduced and one is forced to add more sextupoles to eliminate harmful harmonic components. In the 7-GeV ring, four sextupoles are planned in each cell for this purpose in addition to three per cell for controlling chromat i c it i es. 1. harmonic sextupoles 51 (two/cell) 52 (two/cell) (B"i/Bp) in (meters)-2 1.902 -3.696 2. chromaticity sextupoles So (two/cell)

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

LS-14 T. Khoe  

NLE Websites -- All DOE Office Websites (Extended Search)

of the Booster Synchrotron Injection energy Maximum energy Magne t radius Magne tic fie Id: at inj ec tion maximum rise time closed orbit length energy gain Synchrotron...

182

LS-144 M. Choi  

NLE Websites -- All DOE Office Websites (Extended Search)

was written to solve the two dimensional heat conduction problem with the distributed heat generation. This program uses a non-uniform grid system as shown in Figure (1-1)....

183

LS-88 W. Chou  

NLE Websites -- All DOE Office Websites (Extended Search)

natural to combine the two methods together to get a more complete picture of the vibration - emittance growth problem. For a single vibration frequency f of the ground, the...

184

LS- W. Chou  

NLE Websites -- All DOE Office Websites (Extended Search)

March 12, 1989 March 12, 1989 (Rev. June 12, 1989) Negative Transverse Impedance 1 Introduction In Ref. (1) we report an observation that the horizontal and the vertical loss factors have opposite signs for several types of geometries. Recently, measurements in the SPS show that the coherent tune shift in the horizontal direction has positive values whereas that in the vertical direction has negative ones. (2) Thus, the existence of negative trans- verse impedance gets confirmed in a real machine. This stimulates us to start a new round of systematic studies on this interesting phenomenon. The results obtained from our computer simulations are presented in this note. It is known that, for a circularly symmetric geometry, the transverse wakefield has a positive first peak. This has been discussed in detail by A. W. Chao. (3) After having

185

MoWiTT:Mobile Window Thermal Test Facility  

NLE Websites -- All DOE Office Websites (Extended Search)

0 0 MoWiTT: Mobile Window Thermal Test Facility The window has come a long way since the days when it was a single pane of glass in a wood frame. Low-emissivity windows were designed to help buildings retain some of the energy that would have leaked out of less efficient windows. Designing efficient window-and-frame systems requires accurate measurement of the flow of energy through windows in realistic conditions, a capability provided by the Mobile Window Thermal Test facility. Consisting of a pair of outdoor, room-sized calorimeters, MoWiTT measures the net energy flow through two window samples in side-by-side tests using ambient weather conditions. MoWiTT characterizes the net energy flow as a function of time and measures the temperatures, solar fluxes, and

186

Co-Mo Electric Coop Inc | Open Energy Information  

Open Energy Info (EERE)

Mo Electric Coop Inc Mo Electric Coop Inc Jump to: navigation, search Name Co-Mo Electric Coop Inc Place Missouri Utility Id 4063 Utility Location Yes Ownership C NERC Location SERC NERC MRO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial Multi-Phase Commercial Commercial Single-Phase Over 200 Amps Commercial Commercial Single-Phase Up To 200 Amps Commercial Industrial Industrial Outdoor Lighting HPS 100 W Lighting Outdoor Lighting HPS 150 W Lighting Outdoor Lighting HPS 400 W Lighting Residential Multi-Phase Residential Residential Single-Phase Over 200 Amps Residential

187

DOE - Office of Legacy Management -- Medart Co - MO 09  

Office of Legacy Management (LM)

Medart Co - MO 09 Medart Co - MO 09 FUSRAP Considered Sites Site: MEDART CO. (MO.09 ) Eliminated from consideration under FUSRAP - Facility believed to be torn down and the original site built over Designated Name: Not Designated Alternate Name: None Location: 180 Potomoc Street , St. Louis , Missouri MA.09-4 Evaluation Year: Circa 1990 MA.09-3 Site Operations: Conducted test machining operations on uranium bar stock during the early 1950s. MA.09-2 Site Disposition: Eliminated - Potential for contamination considered remote due limited duration of operations and to site reconstruction MA.09-2 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium Metal (test quantities) MA.09-3 Radiological Survey(s): Health and safety monitoring during operations MA.09-3

188

Permitting and solid waste management issues for the Bailly Station wet limestone Advanced Flue Gas Desulfurization (AFGD) system  

SciTech Connect

Pure Air (a general partnership between Air Products and Chemicals, Inc., and Mitsubishi Heavy Industries America, Inc.). is constructing a wet limestone co-current advanced flue gas desulfurization (AFGD) system that has technological and commercial advantages over conventional FGD systems in the United States. The AFGD system is being installed at the Northern Indiana Public Service Company's Bailly Generating Station near Gary, Indiana. The AFGD system is scheduled to be operational by the Summer, 1992. The AFGD system will remove at least 90 percent of the sulfur dioxide (SO{sub 2}) in the flue gas from Boilers 7 and 8 at the Station while burning 3.2 percent sulfur coal. Also as part of testing the AFGD system, 95 percent removal of SO{sub 2} will be demonstrated on coals containing up to 4.5 percent sulfur. At the same time that SO{sub 2} is removed from the flue gas, a gypsum by-product will be produced which will be used for wallboard manufacturing. Since the AFGD system is a pollution control device, one would expect its installation to be received favorably by the public and regulatory agencies. Although the project was well received by regulatory agencies, on public group (Save the Dunes Council) was initially concerned since the project is located adjacent to the Indiana Dunes National Lakeshore. The purpose of this paper is to describe the project team's experiences in obtaining permits/approvals from regulatory agencies and in dealing with the public. 1 ref., 1 fig., 2 tabs.

Bolinsky, F.T. (Pure Air, Allentown, PA (United States)); Ross, J. (Northern Indiana Public Service Co., Hammond, IN (United States)); Dennis, D.S. (United Engineers and Constructors, Inc., Denver, CO (United States). Stearns-Roger Div.); Huston, J.S. (Environmental Alternatives, Inc., Warren NJ (USA))

1991-01-01T23:59:59.000Z

189

Domestic production of medical isotope Mo-99 moves a step closer  

NLE Websites -- All DOE Office Websites (Extended Search)

Domestic production of medical isotope Mo-99 Domestic production of medical isotope Mo-99 moves a step closer Irradiated uranium fuel has been recycled and reused for molybdenum-99...

190

In situ electron microscopy study of growth of WO3 and MoO3 nanowhiskers  

Science Journals Connector (OSTI)

WO3 and MoO3 nanowhiskers were grown from nanosize WO3 and MoO3 powders intensely irradiated with electrons in an electron microscope. Solid and hollow nanowhiskers of these materials were observed. A growth mech...

1 R. T. Malkhasyan; R. K. Karakhanyan; M. N. Nazaryan

2003-05-01T23:59:59.000Z

191

Policy Flash 2013-71 AL 2013-11 NON M&O CONTRACTOR BUSINESS SYSTEMS...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

71 AL 2013-11 NON M&O CONTRACTOR BUSINESS SYSTEMS CLAUSES FOR SECTION H Policy Flash 2013-71 AL 2013-11 NON M&O CONTRACTOR BUSINESS SYSTEMS CLAUSES FOR SECTION H Policy Flash - AL...

192

Policy Flash 2013-71 AL 2013-11 NON M&O CONTRACTOR BUSINESS SYSTEMS...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1 AL 2013-11 NON M&O CONTRACTOR BUSINESS SYSTEMS CLAUSES FOR SECTION H Policy Flash 2013-71 AL 2013-11 NON M&O CONTRACTOR BUSINESS SYSTEMS CLAUSES FOR SECTION H Policy Flash - AL...

193

Nanoscale Phase Separation In Epitaxial Cr-Mo and Cr-V Alloy...  

NLE Websites -- All DOE Office Websites (Extended Search)

Separation In Epitaxial Cr-Mo and Cr-V Alloy Thin Films Studied Using Atom Probe Tomography: Comparison Of Nanoscale Phase Separation In Epitaxial Cr-Mo and Cr-V Alloy Thin Films...

194

¿Cómo funcionan los Híbridos?  

NLE Websites -- All DOE Office Websites (Extended Search)

¿Cómo funcionan los Híbridos? ¿Cómo funcionan los Híbridos? Diagrama de los componentes de un híbrido completo, incluyen (1) un motor de combustión interna (2) un motor eléctrico, (3) un generador, (4) una aparato de cambio de motor, and (5) una batería de gran capacidad. en inglés Flash Animation: ¿Cómo funcionan los Híbridos? (Requiere versión Flash 6.0 o superior) HTML Version: ¿Cómo funcionan los Híbridos? Los vehículos Híbridos-eléctricos (VHEs) combinan las ventajas de los motores de gasolina con los motores eléctricos y se pueden configurar para diferentes objetivos, como mejorar el ahorro de combustible, aumentar su fuerza, o proveer fuerza adicional para el uso del sistema eléctrico o los componentes electrónicos. Algunas de las tecnologías avanzadas que usan los híbridos típicamente

195

Hole Selective MoOx Contact for Silicon Solar Cells  

Science Journals Connector (OSTI)

Hole Selective MoOx Contact for Silicon Solar Cells ... This work has important implications toward enabling a novel class of junctionless devices with applications for solar cells, light-emitting diodes, photodetectors, and transistors. ... Junctionless solar cells; silicon photovoltaics; heterojunctions; dopant-free contact; molybdenum trioxide ...

Corsin Battaglia; Xingtian Yin; Maxwell Zheng; Ian D. Sharp; Teresa Chen; Stephen McDonnell; Angelica Azcatl; Carlo Carraro; Biwu Ma; Roya Maboudian; Robert. M. Wallace; Ali Javey

2014-01-07T23:59:59.000Z

196

Exploring Neutron-Rich Oxygen Isotopes with MoNA  

E-Print Network (OSTI)

The Modular Neutron Array (MoNA) was used in conjunction with a large-gap dipole magnet (Sweeper) to measure neutron-unbound states in oxygen isotopes close to the neutron dripline. While no excited states were observed in 24O, a resonance at 45(2) keV above the neutron separation energy was observed in 23O.

N. Frank; T. Baumann; D. Bazin; J. Brown; P. A. DeYoung; J. E. Finck; A. Gade; J. Hinnefeld; R. Howes; J. -L. Lecouey; B. Luther; W. A. Peters; H. Scheit; A. Schiller; M. Thoennessen

2007-08-20T23:59:59.000Z

197

Phase transitions in the adsorption system Li/Mo(112)  

E-Print Network (OSTI)

Experimental studies of the phase transitions in the adsorption system Li/Mo(112) are presented. This system is a model system for highly anisotropic interactions. From measurements of the half-widths of the low-energy electron diffraction spot...

Fedorus, A.; Kolthoff, D.; Koval, V.; Lyuksyutov, Igor F.; Naumovets, AG; Pfnur, H.

2000-01-01T23:59:59.000Z

198

(Robert P. Biuk-Aghai), , , : robertb@umac.mo  

E-Print Network (OSTI)

1 * (Robert P. Biuk-Aghai), , , : robertb@umac.mo (GIS) TM 30 1111 (PC) (PDAs) (ITU) 2002 [1] (PDAs) (GIS) (GIS)- 2 34 5 * . #12;2 2222 2001 2002 (PDA) PalmOS Pocket Google Maps API 3333 GPS 3.13.13.13.1 1. 2. 3. . #12;3 Dijkstra [4] / 1 ("S", "D

Biuk-Aghai, Robert P.

199

Nanotribology and Nanofabrication of MoO3 Structures by Atomic Force Microscopy  

Science Journals Connector (OSTI)

...MoS2) surfaces. Highly anisotropic friction was observed whereby...and Ni) typical of black shale environments. One of...MoS2) surfaces. Highly anisotropic friction was observed...measUred friction is extremely anisotropic, with MoO, crystals sliding...

Paul E. Sheehan; Charles M. Lieber

1996-05-24T23:59:59.000Z

200

A re-assessment of age dating of fossiliferous limestones in eastern Sabah, Borneo: Implications for understanding the origins of the Indo-Pacific marine biodiversity hotspot  

Science Journals Connector (OSTI)

On the basis of a combined larger benthic foraminifera, nannofossil and strontium isotope dating programme we confidently re-assign muddy carbonate deposits from the Lower Kinabatangan River Area of Borneo to the Oligocene rather than the Early Miocene. High-diversity, coral-rich (>50 species) deposits are here tightly constrained to predominately at, or just after, the Early to Late Oligocene boundary (Larger benthic foraminifera zone Te1, Nannofossil zone NP24, Sr isotope ages 28.827.6Ma). This new dating potentially pushes back the start of the Indo-West Pacific Centre of Marine Diversity, at least for corals, about 5million years earlier than previous data indicated. Our new data supports maintaining separation of the muddy carbonates (previously defined as the Lower Kinabatangan Limestones: Haile & Wong, 1965) from nearby crystalline limestones of the Gomantong Limestone Formation dated here as Early Miocene (Larger benthic foraminifera zone Te5/earliest Tf1, Sr isotope age 21.0Ma). This apparently punctuated development of shallow marine carbonates is seen at several locations in northern Borneo; an area underlain by oceanic crust and long dominated by very deep marine sedimentation (Hutchison, 2005). The opportunistic formation of clastic-influenced coastal and isolated biohermal carbonates is both an important palaeontological data point and a geological marker of changing basin settings. The new data on the first shallow marine deposits in a long established deep marine location, and evidence for unconformities, has important implications for the regional tectonic model, in an area of hydrocarbon exploration.

Laura B. McMonagle; Peter Lunt; Moyra E.J. Wilson; Kenneth G. Johnson; Christina Manning; Jeremy Young

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
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201

Influence of Mo on the Fe:Mo:C nanocatalyst thermodynamics for single-walled carbon nanotube growth  

E-Print Network (OSTI)

ternary phases, such as the Fe,Mo 23C6 type carbides.37 The way in which carbon interacts with transition of metal carbide formation. Although relating C solubility and catalytic ability of metal catalysts,23 , metals which form carbides ca

Curtarolo, Stefano

202

Phonon and elastic instabilities in MoC and MoN Gus L. W. Hart* and Barry M. Klein  

E-Print Network (OSTI)

illustrating the rich behavior of carbo-nitride materials. The early transition metal carbides and nitrides high transition temperatures. We show that the elastic instability in B1-structure MoN, demonstrated the calculations re- ported here were performed with the linear-augmented- plane-wave method.2­4 The B1 carbides

Hart, Gus

203

Paleotopography and Sea-level Controls on Facies Distribution and Stratal Architecture in the Westerville Limestone Member (Upper Pennsylvanian) NE Kansas and NW Missouri  

E-Print Network (OSTI)

Packstone Facies 35 Microbial Boundstone Facies 40 Coarse-Grained Packstone Facies 44 STRATIGRAPHIC CORRELATIONS AND SEQUENCE-STRATIGRAPHIC INTERPRETATIONS 45 Stratigraphic Datum (Surface A) 58 Wea Shale 58 Surface B 63 Westerville Limestone Member 63... Interval W1 63 Surface C 70 Interval W2 73 Surface D 79 Interval W3 83 Surface E 93 Nellie Bly Formation and Quivira Shale Member 93 Relative Sea-Level Curve 94 DISCUSSION 102 Relative Sea-Level Curve 102 v Paleotopography, Relative Sea Level, and Carbonate...

Fairchild, Justin M.

2012-05-31T23:59:59.000Z

204

Scintillating bolometers based on ZnMoO$_4$ and Zn$^{100}$MoO$_4$ crystals to search for 0$\  

E-Print Network (OSTI)

The technology of scintillating bolometers based on zinc molybdate (ZnMoO$_4$) crystals is under development within the LUMINEU project to search for 0$\

Poda, D V; Arnaud, Q; Augier, C; Benot, A; Berg, L; Boiko, R S; Bergmann, T; Blmer, J; Broniatowski, A; Brudanin, V; Camus, P; Cazes, A; Censier, B; Chapellier, M; Charlieux, F; Chernyak, D M; Coron, N; Coulter, P; Cox, G A; Danevich, F A; de Boissire, T; Decourt, R; De Jesus, M; Devoyon, L; Drillien, A -A; Dumoulin, L; Eitel, K; Enss, C; Filosofov, D; Fleischmann, A; Fourches, N; Gascon, J; Gastaldo, L; Gerbier, G; Giuliani, A; Gros, M; Hehn, L; Henry, S; Herv, S; Heuermann, G; Humbert, V; Ivanov, I M; Juillard, A; Kflian, C; Kleifges, M; Kluck, H; Kobychev, V V; Koskas, F; Kozlov, V; Kraus, H; Kudryavtsev, V A; Sueur, H Le; Loidl, M; Magnier, P; Makarov, E P; Mancuso, M; de Marcillac, P; Marnieros, S; Marrache-Kikuchi, C; Menshikov, A; Nasonov, S G; Navick, X-F; Nones, C; Olivieri, E; Pari, P; Paul, B; Penichot, Y; Pessina, G; Piro, M C; Plantevin, O; Redon, T; Robinson, M; Rodrigues, M; Rozov, S; Sanglard, V; Schmidt, B; Shlegel, V N; Siebenborn, B; Strazzer, O; Tcherniakhovski, D; Tenconi, M; Torres, L; Tretyak, V I; Vagneron, L; Vasiliev, Ya V; Velazquez, M; Viraphong, O; Walker, R J; Weber, M; Yakushev, E; Zhang, X; Zhdankov, V N

2015-01-01T23:59:59.000Z

205

On the Reaction Mechanism of Acetaldehyde Decomposition on Mo(110)  

SciTech Connect

The strong Mo-O bond strength provides promising reactivity of Mo-based catalysts for the deoxygenation of biomass-derived oxygenates. Combining the novel dimer saddle point searching method with periodic spin-polarized density functional theory calculations, we investigated the reaction pathways of a acetaldehyde decomposition on the clean Mo(110) surface. Two reaction pathways were identified, a selective deoxygenation and a nonselective fragmentation pathways. We found that acetaldehyde preferentially adsorbs at the pseudo 3-fold hollow site in the ?2(C,O) configuration on Mo(110). Among four possible bond (?-C-H, ?-C-H, C-O and C-C) cleavages, the initial decomposition of the adsorbed acetaldehyde produces either ethylidene via the C-O bond scission or acetyl via the ?-C-H bond scission while the C-C and the ?-C-H bond cleavages of acetaldehyde leading to the formation of methyl (and formyl) and formylmethyl are unlikely. Further dehydrogenations of ethylidene into either ethylidyne or vinyl are competing and very facile with low activation barriers of 0.24 and 0.31 eV, respectively. Concurrently, the formed acetyl would deoxygenate into ethylidyne via the C-O cleavage rather than breaking the C-C or the C-H bonds. The selective deoxygenation of acetaldehyde forming ethylene is inhibited by relatively weaker hydrogenation capability of the Mo(110) surface. Instead, the nonselective pathway via vinyl and vinylidene dehydrogenations to ethynyl as the final hydrocarbon fragment is kinetically favorable. On the other hand, the strong interaction between ethylene and the Mo(110) surface also leads to ethylene decomposition instead of desorption into the gas phase. This work was financially supported by the National Advanced Biofuels Consortium (NABC). Computing time was granted by a user project (emsl42292) at the Molecular Science Computing Facility in the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL). This work was financially supported by the National Advanced Biofuels Consortium (NABC). Computing time was granted by a user project (emsl42292) at the Molecular Science Computing Facility in the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL). The EMSL is a U.S. Department of Energy (DOE) national scientific user facility located at Pacific Northwest National Laboratory (PNNL) and supported by the DOE Office of Biological and Environmental Research. Pacific Northwest National Laboratory is operated by Battelle for the U.S. Department of Energy.

Mei, Donghai; Karim, Ayman M.; Wang, Yong

2012-02-16T23:59:59.000Z

206

Processing of Mo-Si-B intermetallics by extrusion and oxidation properties of the extruded Tl-MoSi{sub 2}-MoB System  

SciTech Connect

An extrusion process was developed that is able to consistently produce large quantities of Mo-Si-B rods without the presence of defects. Binder removal from the extruded rods was studied in detail and it was determined that heating rates on the order of 0.02{degree}/minute (1.2{degree}/hour) are necessary to remove the binder without the formation of defects. This low heating rate resulted in debinding times in excess of 70 hours (approximately 3 days). Wicking was investigated as a means to decrease the time necessary for binder removal. Using 0.05{micro}m alumina powder as a wicking agent, binder removal times were reduced to 10 hours with heating rates up to 1{degree}/minute employed without defect formation. Once the extrusion process was complete the oxidation properties of the Tl-MoSi{sub 2}-MoB extruded phase assemblage was investigated. It was determined that this composition exhibits catastrophic oxidation or pesting in the temperature range of 660--760 C, resulting in the material turning to dust. Outside of this temperature range the composition is oxidatively stable. Continuous mass measurements were taken at 1,300, 1,450, and 1,600 C to determine the oxidation rate constants of this material. Parabolic rate constants of 6.9 x 10{sup {minus}3}, 1.3 x 10{sup {minus}3}, and 9.1 x 10{sup {minus}3} mg{sup 2}/cm{sup 4}/hr were determined for 1,300, 1,450, and 1,600 C respectively.

Summers, Eric

1999-11-08T23:59:59.000Z

207

Liquid Sampling-Atmospheric Pressure Glow Discharge (LS-APGD) Ionization Source for Elemental Mass Spectrometry: Preliminary Parametric Evaluation and Figures of Merit  

SciTech Connect

A new, low power ionization source for the elemental analysis of aqueous solutions has recently been described. The liquid sampling-atmospheric pressure glow discharge (LS-APGD) source operates at relatively low currents (<20 mA) and solution flow rates (<50 ?L min-1), yielding a relatively simple alternative for atomic mass spectrometry applications. The LS-APGD has been interfaced to what is otherwise an organic, LC-MS mass analyzer, the Thermo Scientific Exactive Orbitrap without any modifications; other than removing the electrospray ionization (ESI) source supplied with that instrument. A glow discharge is initiated between the surface of the test solution exiting a glass capillary and a metallic counter electrode mounted at a 90 angle and separated by a distance of ~5 mm. As with any plasma-based ionization source, there are key discharge operation and ion sampling parameters that affect the intensity and composition of the derived mass spectra; including signal-to-background ratios. We describe here a preliminary parametric evaluation of the roles of discharge current, solution flow rate, argon sheath gas flow rate, and ion sampling distance as they apply on this mass analyzer system. A cursive evaluation of potential matrix effects due to the presence of easily ionized elements (EIEs) indicate that sodium concentrations of up to 500 ?g mL-1 generally cause suppressions of less than 50%, dependant upon the analyte species. Based on the results of this series of studies, preliminary limits of detection (LOD) have been established through the generation of calibration functions. Whilst solution-based concentrations LOD levels of 0.02 2 ?g mL-1 3 are not impressive on the surface, the fact that they are determined via discrete 5 ?L injections leads to mass-based detection limits at picogram to singlenanogram levels. The overhead costs associated with source operation (10 W d.c. power, solution flow rates of <50 ?L min-1, and gas flow rates <10 mL min-1) are very attractive. While further optimization in the source design is suggested here, it is believed that the LS-APGD ion source may present a practical alternative to inductively-coupled plasma (ICP) sources typically employed in elemental mass spectrometry.

Quarles, C. Derrick; Carado, Anthony J.; Barinaga, Charles J.; Koppenaal, David W.; Marcus, R. Kenneth

2012-01-01T23:59:59.000Z

208

Octupole collectivity in {sup 98,100,102}Mo  

SciTech Connect

Excited states in {sup 98,100,102}Mo have been studied via the {sup 30}Si+{sup 168}Er-induced fission reaction at a beam energy of 142 MeV. Prompt {gamma} rays were detected with the EUROBALL III multidetector array. The level schemes are extended with more than 20 new transitions and interpreted in the framework of a soft-octupole vibration model.

Lalkovski, S.; Ilieva, S.; Minkova, A.; Minkov, N.; Kutsarova, T.; Lopez-Martens, A.; Korichi, A.; Huebel, H.; Goergen, A.; Jansen, A.; Schoenwasser, G.; Herskind, B.; Bergstroem, M.; Podolyak, Zs. [Department of Physics, University of Sofia, 1164 Sofia (Bulgaria); Institute for Nuclear Research and Nuclear Energy, BAS, 1784 Sofia (Bulgaria); Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, F-91405 Orsay Campus (France); Helmholtz-Institut fuer Strahlen-und Kernphysik, Universitaet Bonn, Nussallee 14-16, D-53115 Bonn (Germany); The Niels Bohr Institut, Blegdamsvej 17, DK-2100 Copenhagen (Denmark); INFN, Laboratori Nationali di Legnaro (Italy)

2007-01-15T23:59:59.000Z

209

IRRADIATION PERFORMANCE OF U-Mo MONOLITHIC FUEL  

SciTech Connect

High-performance research reactors require fuel that operates at high specific power to high fission density, but at relatively low temperatures. Research reactor fuels are designed for efficient heat rejection, and are composed of assemblies of thin-plates clad in aluminum alloy. The development of low-enriched fuels to replace high-enriched fuels for these reactors requires a substantially increased uranium density in the fuel to offset the decrease in enrichment. Very few fuel phases have been identified that have the required combination of very-high uranium density and stable fuel behavior at high burnup. UMo alloys represent the best known tradeoff in these properties. Testing of aluminum matrix U-Mo aluminum matrix dispersion fuel revealed a pattern of breakaway swelling behavior at intermediate burnup, related to the formation of a molybdenum stabilized high aluminum intermetallic phase that forms during irradiation. In the case of monolithic fuel, this issue was addressed by eliminating, as much as possible, the interfacial area between U-Mo and aluminum. Based on scoping irradiation test data, a fuel plate system composed of solid U-10Mo fuel meat, a zirconium diffusion barrier, and Al6061 cladding was selected for development. Developmental testing of this fuel system indicates that it meets core criteria for fuel qualification, including stable and predictable swelling behavior, mechanical integrity to high burnup, and geometric stability. In addition, the fuel exhibits robust behavior during power-cooling mismatch events under irradiation at high power.

M.K. Meyer; J. Gan; J.-F. Jue; D.D. Keiser; E. Perez; A. Robinson; D.M. Wachs; N. Woolstenhulme; G.L. Hofman; Y.-S. Kim

2014-04-01T23:59:59.000Z

210

Oxidation of ethane to ethylene and acetic acid by MoVNbO catalysts M. Roussel1  

E-Print Network (OSTI)

1 Oxidation of ethane to ethylene and acetic acid by MoVNbO catalysts M. Roussel1 , M. Bouchard1 catalytic properties in the oxidation of ethane to ethylene and acetic acid is examined. Solids based on Mo and nanosize of MoO3 and (VNbMo)5O14 crystals. The high global selectivity to ethylene and acetic acid (90

Paris-Sud XI, Université de

211

1 Di Neujahr 1 Fr 1 Fr 1 Mo Ostermontag 2 Mi 2 Sa 2 Sa 2 Di  

E-Print Network (OSTI)

1 Di Neujahr 1 Fr 1 Fr 1 Mo Ostermontag 2 Mi 2 Sa 2 Sa 2 Di 3 Do 3 So 3 So 3 Mi 4 Fr 4 Mo 4 Mo 4 Do 5 Sa 5 Di 5 Di 5 Fr 6 So 6 Mi 6 Mi 6 Sa 7 Mo 7 Do 7 Do 7 So 8 Di 8 Fr 8 Fr 8 Mo 9 Mi 9 Sa 9 Sa 9 Di 10 Do 10 So 10 So 10 Mi 11 Fr 11 Mo 11 Mo 11 Do 12 Sa 12 Di 12 Di 12 Fr 13 So 13 Mi 13 Mi Power

Grübel, Rudolf

212

Electrodeposition of CIS films on the Mo back electrodes with different crystallinities  

Science Journals Connector (OSTI)

Electrodeposition of copper indium diselenide (CuInSe2), which is an absorption layer for thin film solar cells, has been studied on a molybdenum (Mo)-coated glass with different crystallinities. Metastable FCC Mo and BCC Mo coatings were prepared by R.F. sputtering with varying R.F. power (100170W) and Ar pressure (311mTorr). Experimental results indicated that the Mo coating deposited at lower power and higher pressure had smaller crystallite size. Cross-sectional transmission electron microscopy showed that the Mo coating deficient in crystallinities contained micro voids residing in the boundaries of the columnar grains and had higher oxygen content, as measured by energy dispersive spectroscopy. The crystallinity of Mo coatings strongly influenced the open circuit potential in the electrolyte for CIS electrodeposition. Consequently, the Cu/In ratio of CIS deposits plated at a constant potential (?0.7 vs. SCE) varied with the distinct Mo coatings. Moreover, the CIS deposit on the various Mo-coated glasses displayed a different morphology. The effect of the crystallinity of Mo coatings on hydrogen evolution reaction at pH 1.55 was also explored. Hydrogen evolution during the CIS electrodeposition may be one of the key factors to influence the CIS morphology. How the crystallinity of the Mo coating affects the composition and morphology of the CIS deposits can be useful for device fabrication and deserves for further study.

Hsien-Chung Huang; Chao-Sung Lin; Wei-Che Chang

2012-01-01T23:59:59.000Z

213

Page 366 Courses: Political Science (POLS) Sonoma State University 2014-2015 Catalog poLS 311 Modern poLitiCAL tHougHt: MACHiAVeLLi to oBAMA (4)  

E-Print Network (OSTI)

Page 366 Courses: Political Science (POLS) Sonoma State University 2014-2015 Catalog poLS 311 Modern poLitiCAL tHougHt: MACHiAVeLLi to oBAMA (4) Examination of the major writings from Machiavelli AMeriCAn poLitiCAL tHougHt (4) An examination of the development of American political ideas

Ravikumar, B.

214

Design and experimental activities supporting commercial U.S. electron accelerator production of Mo-99  

SciTech Connect

{sup 99m}Tc, the daughter isotope of {sup 99}Mo, is the most commonly used radioisotope for nuclear medicine in the United States. Under the direction of the National Nuclear Security Administration (NNSA), Los Alamos National Laboratory (LANL) and Argonne National Laboratory (ANL) are partnering with North Star Medical Technologies to demonstrate the viability of large-scale {sup 99}Mo production using electron accelerators. In this process, {sup 99}Mo is produced in an enriched {sup 100}Mo target through the {sup 100}Mo({gamma},n){sup 99}Mo reaction. Five experiments have been performed to date at ANL to demonstrate this process. This paper reviews the current status of these activities, specifically the design and performance of the helium gas target cooling system.

Dale, Gregory E.; Woloshun, Keith A.; Kelsey IV, Charles T.; Olivas, Eric R.; Holloway, Michael A.; Hurtle, Ken P.; Romero, Frank P.; Dalmas, Dale A. [Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545 (United States); Chemerisov, Sergey D.; Vandegrift, George F.; Tkac, Peter; Makarashvili, Vakho; Jonah, Charles D. [Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439 (United States); Harvey, James T. [NorthStar Medical Technologies, LLC, 5249 Femrite Drive, Madison, WI 53718 (United States)

2013-04-19T23:59:59.000Z

215

Fe3O4-LiMo3Se3 Nanoparticle Clusters as Superparamagnetic Nanocompasses  

E-Print Network (OSTI)

Fe3O4-LiMo3Se3 Nanoparticle Clusters as Superparamagnetic Nanocompasses Frank E. Osterloh,*, Hiroki bacteria is described. LiMo3Se3-Fe3O4 nanowire-nanoparticle composites were synthesized by a reaction of 3-iodopropionic acid treated LiMo3Se3 nanowire bundles with oleic acid-stabilized Fe3O4 nanoparticles of 2.8, 5

Osterloh, Frank

216

Experimental activities supporting commercial U.S. accelerator production of 99-Mo  

SciTech Connect

{sup 99m}Tc, the daughter product of {sup 99}Mo, is the most commonly used radioisotope for nuclear medicine in the U.S. Experiments are being performed at Los Alamos National Laboratory and Argonne National Laboratory to demonstrate production of {sup 99}Mo using accelerators. The {sup 100}Mo({gamma},n){sup 99}Mo reaction in an enriched {sup 100}Mo target is currently under investigation. Three scaled low-power production experiments using a 20-MeV electron linac at Argonne have been performed to date. Two of these experiments used natural Mo targets and produced a total of 613 {mu}C of {sup 99}Mo. The third experiment used an enriched {sup 100}Mo target and produced 10.5 mCi of {sup 99}Mo. Following irradiation the targets were dissolved and the low specific activity solution was processed through an ARSII generator from NorthStar Medical Radioisotopes. Yields of {sup 99m}Tc >95% have been observed.

Dale, Gregory E [Los Alamos National Laboratory; Chemerisov, Sergey D [ANL; Vandegrift, George F [ANL

2010-01-01T23:59:59.000Z

217

Oxidation Behavior of Mo-Si-B Alloys in Wet Air  

SciTech Connect

Multiphase composite alloys based on the Mo-Si-B system are candidate materials for ultra-high temperature applications. In non load-bearing uses such as thermal barrier coatings or heat exchangers in fossil fuel burners, these materials may be ideally suited. The present work investigated the effect of water vapor on the oxidation behavior of Mo-Si-B phase assemblages. Three alloys were studied: Alloy 1 = Mo{sub 5}Si{sub 3}B{sub x} (T1)- MoSi{sub 2}- MoB, Alloy 2 = T1- Mo{sub 5}SiB{sub 2} (T2)- Mo{sub 3}Si, and Alloy 3 = Mo- T2- Mo{sub 3}Si. Tests were conducted at 1000 and 1100C in controlled atmospheres of dry air and wet air nominally containing 18, 55, and 150 Torr H{sub 2}O. The initial mass loss of each alloy was approximately independent of the test temperature and moisture content of the atmosphere. The magnitude of these initial losses varied according to the Mo content of the alloys. All alloys formed a continuous, external silica scale that protected against further mass change after volatilization of the initially formed MoO{sub 3}. All alloys experienced a small steady state mass change, but the calculated rates cannot be quantitatively compared due to statistical uncertainty in the individual mass measurements. Of particular interest is that Alloy 3, which contains a significant volume fraction of Mo metal, formed a protective scale. All alloys formed varying amounts of subscale Mo and MoO{sub 2}. This implies that oxygen transport through the external silica scale has been significantly reduced. For all alloys, water vapor accelerated the growth of a multiphase interlayer at the silica scale/unoxidized alloy interface. This interlayer is likely composed of fine Mo and MoO{sub 2} that is dispersed within a thin silica matrix. Alloy 3 was particularly sensitive to water accelerated growth of this interlayer. At 1100 C, the scale thickness after 300 hours increased from about 20 mm in dry air to nearly 100 mm in wet air.

M. Kramer; A. Thom; O. Degirmen; V. Behrani; M. Akinc

2002-04-22T23:59:59.000Z

218

Mechanism and Significance of Post-Translational Modifications in the Large (LS) and Small (SS) Subunits of Ribulose-1,5 Bisphosphate Carboxylase/Oxygenase  

SciTech Connect

This project focused on a molecular and biochemical characterization of the protein methyltransferases responsible for methylation of the LS and SS in Rubisco, and the associated functional consequences accompanying these modifications. Our results provided some of the most informative structural and mechanistic understandings of SET domain protein methyltransferases. These results also positioned us to provide the first unambiguous assignment of the kinetic reaction mechanism for SET-domain protein methyltransferases, and to design and engineer an alternative substrate for Rubisco LSMT, enabling substrate specificity and functional significance studies. We demonstrated that the minimal substrate recognized by Rubisco LSMT is free lysine as well as monomethyllysine, an observation corroborated both by structural analyses as well as enzymatic activity and subsequent product distribution analyses. Ternary complexes between Rubisco LSMT and free lysine compared to complexes with monomethyllysine demonstrated that the structural basis for multiple methyl group additions is a consequence of hydrogen-bond driven spatial shifts in the amino group of Lys-14, which maintains the direct in-line geometry necessary for SN2 nucleophilic attack. The structural observations are also consistent with the previous proposal that the multiplicity of methyl group additions takes place through a processive mechanism, with successive methyl group additions to an enzyme protein complex which does not disassociate prior to the formation of trimethyllysine. This mechanism has important implications, since the regulation of gene expression by SET domain histone methyltransferases is not only dependent on site-specific lysine methylation, but also the degree of methylation. We examined the kinetic reaction mechanism for three different types of SET domain protein methyltransferases, each under conditions supporting mono-, di-, or trimethyllysine formation corroborated by product analyses. Additionally, the tight initial binding of Rubisco LSMT to Rubisco also allowed us to design a novel immobilized complex between Rubisco and Rubisco LSMT, which allowed for an unambiguous demonstration of the requirement for trimethyllysine formation prior to disassociation of the Rubisco LSMT:Rubisco complex, and therefore proof of the processive mechanism for methyl group transfer. These kinetic studies also demonstrated that an important factor has been overlooked in all kinetic analyses of SET domain protein methyltransferases reported to date. This factor is the influence of the low turnover number for SET domain protein methyltransferases and how, relative to the time-frame of kinetic enzyme assays, this can generate changes in kinetic profiles shifting reciprocal plot patterns from random/ordered bi-bi to the real kinetic reaction mechanism plots of ping-pong. Although the ternary complexes of Rubisco LSMT with S-Adenosylhomocysteine and lysine and monomethyllysine were informative in regard to reaction mechanism, they were not helpful in identifying the mechanism used by Rubisco LSMT for determining substrate specificity. We were unsuccessful at obtaining ternary complexes of Rubisco LSMT with bound synthetic polypeptide substrates, as has been reported for several histone methyltransferases. However, we were able to model a polypeptide sequence corresponding to the N-terminal region of the LS of Rubisco into the apparent substrate binding cleft in Rubisco LSMT. Knowledge of the determinants of polypeptide substrate specificity are important for identifying possible alternate substrates, as well as the possibility of generating more desirable substrates amenable to site-directed mutagenesis experiments unlike Rubisco. We determined that Rubisco LSMT is capable of methylating synthetic polypeptide mimics of the N-terminal region of the LS, both free as well as conjugated to keyhole limpet hemacyanin, but with considerable less efficiency than intact holoenzyme.

Houtz, Robert, L.

2012-11-09T23:59:59.000Z

219

Characterization of U-Mo Foils for AFIP-7  

SciTech Connect

Twelve AFIP in-process foil samples, fabricated by either Y-12 or LANL, were shipped from LANL to PNNL for potential characterization using optical and scanning electron microscopy techniques. Of these twelve, nine different conditions were examined to one degree or another using both techniques. For this report a complete description of the results are provided for one archive foil from each source of material, and one unirradiated piece of a foil of each source that was irradiated in the Advanced Test Reactor. Additional data from two other LANL conditions are summarized in very brief form in an appendix. The characterization revealed that all four characterized conditions contained a cold worked microstructure to different degrees. The Y-12 foils exhibited a higher degree of cold working compared to the LANL foils, as evidenced by the highly elongated and obscure U-Mo grain structure present in each foil. The longitudinal orientations for both of the Y-12 foils possesses a highly laminar appearance with such a distorted grain structure that it was very difficult to even offer a range of grain sizes. The U-Mo grain structure of the LANL foils, by comparison, consisted of a more easily discernible grain structure with a mix of equiaxed and elongated grains. Both materials have an inhomogenous grain structure in that all of the characterized foils possess abnormally coarse grains.

Edwards, Danny J.; Ermi, Ruby M.; Schemer-Kohrn, Alan L.; Overman, Nicole R.; Henager, Charles H.; Burkes, Douglas; Senor, David J.

2012-11-07T23:59:59.000Z

220

mo funcionan las Células de Combustible  

NLE Websites -- All DOE Office Websites (Extended Search)

mo funcionan las Células de Combustible Cómo funcionan las Células de Combustible Diagrama: Como funciona un MPE de combustible de célula. 1. El combustible de hidrógeno es canalizado a través de un campo de placas de flujo para el ánodo al otro lado de la pila de combustible, mientras que el oxígeno del aire se canaliza hacia el cátodo del otro lado de la celda. 2. En el ánodo, un catalizador de platino hace que el hidrógeno se divida en iones positivos de hidrógeno (protones) y electrones de carga negativa. 3. La Membrana de Electrolito Polimérico (MPE) sólo permite que los iones de carga positiva pasen a través de ella hacia el cátodo. Los electrones de carga negativa deben viajar a lo largo de un circuito externo hacia el cátodo, creando una corriente eléctrica. 4. En el cátodo, los electrones y los iones positivos de hidrógeno se combinan con el oxígeno para formar agua, que fluye fuera de la célula.

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Development of FeNiMoB thin film materials for microfabricated magnetoelastic sensors  

SciTech Connect

Metglas{sup TM} 2826MB foils of 25-30 {mu}m thickness with the composition of Fe{sub 40}Ni{sub 38}Mo{sub 4}B{sub 18} have been used for magnetoelastic sensors in various applications over many years. This work is directed at the investigation of {approx}3 {mu}m thick iron-nickel-molybdenum-boron (FeNiMoB) thin films that are intended for integrated microsystems. The films are deposited on Si substrate by co-sputtering of iron-nickel (FeNi), molybdenum (Mo), and boron (B) targets. The results show that dopants of Mo and B can significantly change the microstructure and magnetic properties of FeNi materials. When FeNi is doped with only Mo its crystal structure changes from polycrystalline to amorphous with the increase of dopant concentration; the transition point is found at about 10 at. % of Mo content. A significant change in anisotropic magnetic properties of FeNi is also observed as the Mo dopant level increases. The coercivity of FeNi films doped with Mo decreases to a value less than one third of the value without dopant. Doping the FeNi with B together with Mo considerably decreases the value of coercivity and the out-of-plane magnetic anisotropy properties, and it also greatly changes the microstructure of the material. In addition, doping B to FeNiMo remarkably reduces the remanence of the material. The film material that is fabricated using an optimized process is magnetically as soft as amorphous Metglas{sup TM} 2826MB with a coercivity of less than 40 Am{sup -1}. The findings of this study provide us a better understanding of the effects of the compositions and microstructure of FeNiMoB thin film materials on their magnetic properties.

Liang Cai; Gooneratne, Chinthaka; Cha, Dongkyu; Chen Long; Kosel, Jurgen [Computer Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology, 4700 KAUST, Thuwal 23955 (Saudi Arabia); Gianchandani, Yogesh [Department of Electrical Engineering and Computer Science, 1301 Beal Ave., University of Michigan, Ann Arbor, Michigan 48109 (United States)

2012-12-01T23:59:59.000Z

222

B(E2) values and the search for the critical point symmetry X(5) in 104Mo and 106Mo  

Science Journals Connector (OSTI)

Lifetimes of the first 4+ and 6+ states in 104Mo and 106Mo have been measured using the recoil distance method following spontaneous fission of 252Cf. The experiment was performed at the 88-inch cyclotron of the Lawrence Berkeley National Laboratory employing the Gammasphere array and the New Yale Plunger Device. Reduced transition probabilities in the ground state band of 104Mo are compared with predictions of the critical point symmetry X(5) for phase transitional nuclei between rotational and vibrational shape. While known level energies of 104Mo are in good agreement with the X(5) predictions, the analysis of the measured B(E2) values favors a rotor interpretation.

C. Hutter; R. Krcken; A. Aprahamian; C. J. Barton; C. W. Beausang; M. A. Caprio; R. F. Casten; W.-T. Chou; R. M. Clark; D. Cline; J. R. Cooper; M. Cromaz; A. A. Hecht; A. O. Macchiavelli; N. Pietralla; M. Shawcross; M. A. Stoyer; C. Y. Wu; N. V. Zamfir

2003-05-28T23:59:59.000Z

223

AMoRE: Collaboration for searches for the neutrinoless double-beta decay of the isotope of 100Mo with the aid of 40Ca100MoO4 as a cryogenic scintillation detector  

Science Journals Connector (OSTI)

The AMoRE (Advanced Mo based Rare process Experiment) Collaboration is planning to employ 40Ca100MoO4...single crystals as a cryogenic Scintillation detector for studying the neutrinoless double-beta decay of the...

N. D. Khanbekov

2013-09-01T23:59:59.000Z

224

A Cubic Fe4Mo4 Oxo Framework and Its Reversible Four-Electron Redox Chemistry  

Science Journals Connector (OSTI)

Max Planck Institute for Chemical Energy Conversion (formerly Bioinorganic Chemistry), Stiftstrae 34?36, 45470 Mlheim, Germany ... Indeed, a salt with a FeII2FeIII2MoVI4 constellation, [Fe4Mo4](TCNQ)2 (2), could be isolated after treatment with TCNQ. ... data indicate that the binding energies of all the elements in the title compds. ...

Jan P. Falkenhagen; Beatrice Braun; Eckhard Bill; Dominik Sattler; Christian Limberg

2014-07-01T23:59:59.000Z

225

Corrosion Behavior of Solution-Annealed CoCrMo Medical Implant  

E-Print Network (OSTI)

! ! ! Corrosion Behavior of Solution- Annealed CoCrMo Medical Implant Alloys Pooja Panigrahi University June 6, 2011 #12;! ! ""! Corrosion Behavior of Solution-Annealed CoCrMo Medical Implant Alloys and Applied Sciences Northwestern University June 6, 2011 Abstract Corrosion behavior of solution annealed

Shull, Kenneth R.

226

Magnetically Mediated Transparent Conductors: In2O3 Doped with Mo J. E. Medvedeva*  

E-Print Network (OSTI)

Magnetically Mediated Transparent Conductors: In2O3 Doped with Mo J. E. Medvedeva* Department August 2006) First-principles band structure investigations of the electronic, optical, and magnetic properties of Mo- doped In2O3 reveal the vital role of magnetic interactions in determining both

Medvedeva, Julia E.

227

GoPoMoSA: A Goal-Oriented Process Modeling and Simulation Advisor  

E-Print Network (OSTI)

and improvement. This paper presents GoPoMoSA (Goal-oriented Process Modeling and Simulation Advisor), a semi-automatedGoPoMoSA: A Goal-Oriented Process Modeling and Simulation Advisor Xu Bai and LiGuo Huang Dept and Simulation Advisor that semi-automatically discovers suitable Software Process Modeling and Simula- tion

Egyed, Alexander

228

Kinetic, Mechanistic, and Spectroscopic Studies of the Mo/Cu Containing CO dehydrogenase of Oligotropha carboxidovorans  

E-Print Network (OSTI)

et. al. where active site models [Tp iPr MoO(OAr)(?-S)Cu(triazacyclononane) (Tp iPr ) = hydrotris(3-isopropylpyrazol-of CO dehydrogenase: [Tp iPr Mo (V) (O)(OAr)(?-S)Cu (I) (Me

Wilcoxen, Jarett Michael

2013-01-01T23:59:59.000Z

229

Stability of Graphene doping with MoO_3 and I_2  

E-Print Network (OSTI)

We dope graphene by evaporation of MoO_3 or by solution-deposition of I_2 and assess the doping stability for its use as transparent electrodes. Electrical measurements show that both dopants increase the graphene sheet conductivity and find that Mo...

DArsi, Lorenzo; Esconjauregui, Santiago; Weatherup, Robert; Guo, Yuzheng; Bhardwaj, Sunil; Centeno, Alba; Zurutuza, Amaia; Cepek, Cinzia; Robertson, John

2014-09-08T23:59:59.000Z

230

Modeling High-energy Light curves of the PSRB125963/LS 2883 Binary Based on 3D SPH Simulations  

Science Journals Connector (OSTI)

Temporal changes of X-ray to very high energy gamma-ray emissions from the pulsar-Be-star binary PSRB125963/LS 2883 are studied based on three-dimensional smoothed particle hydrodynamic simulations of pulsar wind interaction with Be-disk and wind. We focus on the periastron passage of the binary and calculate the variation of the synchrotron and inverse-Compton emissions using the simulated shock geometry and pressure distribution of the pulsar wind. The characteristic double-peaked X-ray light curve from observations is reproduced by our simulation under a dense Be-disk condition (base density ~109 g cm3). We interpret the pre- and post-periastron peaks as being due to a significant increase in the conversion efficiency from pulsar spin-down power to the shock-accelerated particle energy at orbital phases when the pulsar crosses the disk before periastron passage, and when the pulsar wind creates a cavity in the disk gas after periastron passage, respectively. On the contrary, in the modelTeV light curve, which also shows a double-peak feature, the first peak appears around the periastron phase. The possible effects of cooling processes on theTeV light curve are briefly discussed.

J. Takata; A. T. Okazaki; S. Nagataki; T. Naito; A. Kawachi; S.-H. Lee; M. Mori; K. Hayasaki; M. S. Yamaguchi; S. P. Owocki

2012-01-01T23:59:59.000Z

231

Domestic production of medical isotope Mo-99 moves a step closer  

NLE Websites -- All DOE Office Websites (Extended Search)

Domestic production of medical isotope Mo-99 Domestic production of medical isotope Mo-99 Domestic production of medical isotope Mo-99 moves a step closer Irradiated uranium fuel has been recycled and reused for molybdenum-99 (Mo-99) production, with virtually no losses in Mo-99 yields or uranium recovery. May 13, 2013 From left, Los Alamos scientists Roy Copping, Sean Reilly, and Daniel Rios. Copping examines the Buchi Multivapor P-12 Evaporator, and Reilly and Rios are at the Agilent Technologies Cary 60 UV-Vis Spectrometer. From left, Los Alamos scientists Sean Reilly, Roy Copping, and Daniel Rios. Sean is looking at the Buchi Multivapor P-12 Evaporator, and Roy and Daniel are at the Agilent Technologies Cary 60 UV-Vis Spectrometer. Contact Nancy Ambrosiano Communications Office (505) 667-0471

232

Photo-oxidation method using MoS2 nanocluster materials  

DOE Patents (OSTI)

A method of photo-oxidizing a hydrocarbon compound is provided by dispersing MoS.sub.2 nanoclusters in a solvent containing a hydrocarbon compound contaminant to form a stable solution mixture and irradiating the mixture to photo-oxide the hydrocarbon compound. Hydrocarbon compounds of interest include aromatic hydrocarbon and chlorinated hydrocarbons. MoS.sub.2 nanoclusters with an average diameter less than approximately 10 nanometers are shown to be effective in decomposing potentially toxic aromatic and chlorinated hydrocarbons, such as phenol, pentachlorophenol, chlorinated biphenols, and chloroform, into relatively non-toxic compounds. The irradiation can occur by exposing the MoS.sub.2 nanoclusters and hydrocarbon compound mixture with visible light. The MoS.sub.2 nanoclusters can be introduced to the toxic hydrocarbons as either a MoS.sub.2 solution or deposited on a support material.

Wilcoxon, Jess P. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

233

Development of LEU targets for {sup 99}Mo production and their chemical processing status 1993  

SciTech Connect

Most of the world`s supply of {sup 99m}{Tc} for medical purposes is currently produced from {sup 99}Mo derived from the fastening of high enriched uranium (HEU). Substitution of low enriched uranium (LEU) silicide fuel for the HEU alloy and aluminide fuels used in current target designs will allow equivalent {sup 99}Mo yields with little change in target geometries. Substitution of uranium metal for uranium oxide films in other target designs will also allow the substitution of LEU for HEU. In 1993, DOE renewed funding that was terminated in 1990 for development of LEU targets for {sup 99}Mo production. During the past year, our efforts were to (1) renew contact with {sup 99}Mo producers, (2) define the means to test our process for recovering {sup 99}Mo from irradiated LEU-silicide targets, and (3) begin to test our process on spent LEU-silicide miniplates stored at ANL from past fuel development studies.

Vandegrift, G.F.; Hutter, J.C.; Srinivasan, B.; Matos, J.E.; Snelgrove, J.L.

1993-10-01T23:59:59.000Z

234

Electrical properties of a-C:Mo films produced by dual-cathode filtered cathodic arc plasma deposition  

E-Print Network (OSTI)

and Related Materials Electrical properties of a-C:Mo filmsNo. DE-AC02-05CH11231. Electrical properties of a-C:Mo filmsair. Film resistivity and electrical activation energy were

Sansongsiri, Sakon

2008-01-01T23:59:59.000Z

235

Electronic Structure Description of the Cis-MoOS Unit in Models for Molybdenum Hydroxylases  

SciTech Connect

The molybdenum hydroxylases catalyze the oxidation of numerous aromatic heterocycles and simple organics and, unlike other hydroxylases, utilize water as the source of oxygen incorporated into the product. The electronic structures of the cis-MoOS units in CoCp{sub 2}[Tp{sup iPr}Mo{sup V}OS(OPh)] and Tp{sup iPr}Mo{sup VI}OS(OPh) (Tp{sup iPr} = hydrotris(3-isopropylpyrazol-1-yl)borate), new models for molybdenum hydroxylases, have been studied in detail using S K-edge X-ray absorption spectroscopy, vibrational spectroscopy, and detailed bonding calculations. The results show a highly delocalized Mo {double_bond} S {pi}* LUMO redox orbital that is formally Mo(d{sub xy}) with {approx}35% sulfido ligand character. Vibrational spectroscopy has been used to quantitate Mo-S{sub sulfido} bond order changes in the cis-MoOS units as a function of redox state. Results support a redox active molecular orbital that has a profound influence on MoOS bonding through changes to the relative electro/nucleophilicity of the terminal sulfido ligand accompanying oxidation state changes. The bonding description for these model cis-MoOS systems supports enzyme mechanisms that are under orbital control and dominantly influenced by the unique electronic structure of the cis-MoOS site. The electronic structure of the oxidized enzyme site is postulated to play a role in polarizing a substrate carbon center for nucleophilic attack by metal activated water and acting as an electron sink in the two-electron oxidation of substrates.

Doonan, C.J.; Rubie, N.D.; Peariso, K.; Harris, H.H.; Knottenbelt, S.Z.; George, G.N.; Young, C.G.; Kirk, M.L.; /New Mexico U. /Melbourne U. /SLAC, SSRL

2009-04-29T23:59:59.000Z

236

99Mo/99mTc separation: An assessment of technology options  

Science Journals Connector (OSTI)

Several strategies for the effective separation of 99mTc from 99Mo have been developed and validated. Due to the success of column chromatographic separation using acidic alumina coupled with high specific activity fission 99Mo (F 99Mo) for production of 99Mo/99mTc generators, however, most technologies until recently have generated little interest. The reduced availability of F 99Mo and consequently the shortage of 99Mo/99mTc column generators in the recent past have resurrected interest in the production of 99Mo as well as 99mTc by alternate routes. Most of these alternative production processes require separation techniques capable of providing clinical grade 99mTc from low specific activity 99Mo or irradiated Mo targets. For this reason there has been renewed interest in alternate separation routes. This paper reviews the reported separation technologies which include column chromatography, solvent extraction, sublimation and gel systems that have been traditionally used for the fabrication of 99Mo/99mTc generator systems. The comparative advantage, disadvantage, and technical challenges toward adapting the emerging requirements are discussed. New developments such as solid-phase column extraction, electrochemical separation, extraction chromatography, supported liquid membrane (SLM) and thermochromatographic techniques are also being evaluated for their potential application in the changed scenario of providing 99mTc from alternate routes. Based on the analysis provided in this review, it appears that some proven separation technologies can be quickly resurrected for the separation of clinical grade 99mTc from macroscopic levels of reactor or cyclotron irradiated molybdenum targets. Furthermore, emerging technologies can be developed further to respond to the expected changing modes of 99mTc production.

Ashutosh Dash; F.F. (Russ) Knapp Jr.; M.R.A. Pillai

2013-01-01T23:59:59.000Z

237

Optical properties of Mo6S3I6 nanowires  

Science Journals Connector (OSTI)

Optical reflectivity and absorbance measurements of oriented Mo6S3I6 nanowire thin films and dispersions in different solvents are presented extending from the far infrared to the ultraviolet. In spite of the highly one-dimensional character of the nanowire material and narrow electronic valence and conduction subbands, as predicted by the density-functional theory calculations, sharp Van Hove features in the optical absorption spectra are not observed, partly because of the large density of interpenetrating electron subbands and partly due to damping and disorder. The optically measured electrical conductivity extrapolated to zero frequency ?1(??0) and the calculated conductivity are significantly higher than the typical dc value from resistance measurements, indicating that disorder limits electron transport, a feature characteristic of strongly one-dimensional systems.

D. Vengust; F. Pfuner; L. Degiorgi; I. Vilfan; V. Nicolosi; J. N. Coleman; D. Mihailovic

2007-08-08T23:59:59.000Z

238

Comparative study of gel-based separated arc-discharge, HiPCO, and CoMoCAT carbon nanotubes  

E-Print Network (OSTI)

Nano Res 1 Comparative study of gel-based separated arc-discharge, HiPCO, and CoMoCAT carbon) Comparative Study of Gel-based Separated Arc-discharge, HiPCO, and CoMoCAT Carbon Nanotubes kinds of mainstream carbon nanotubes (arc-discharge, HiPCO, CoMoCAT) separated using low-cost gel

Zhou, Chongwu

239

Electronic structure and point defect concentrations of \\{C11b\\} MoSi2 by first-principles calculations  

Science Journals Connector (OSTI)

Abstract The electronic structure and point defect concentrations of \\{C11b\\} MoSi2 were studied systematically by the first-principles calculations based on density functional theory. Mo vacancy-induced charge density shows strong directional covalent bonds caused by hybridization of Mo-4d and Si-3p orbitals, which indicates that MoSi2 has low fracture toughness at room temperature. Combining with WagnerSchottky model, these point defect concentrations of \\{C11b\\} MoSi2 at 2173, 1673, 1223, 773K as function of composition were also investigated. It is found that the point defect concentrations change drastically for off-stoichiometric compounds. The main structural defects are preferably Mo vacancies or Si anti-structure atoms on the Mo sublattices in Si-rich alloy, and Mo anti-site in Mo-rich alloy, respectively. According to the calculated effective formation enthalpies of point defects, the effective formation enthalpies from big to small in sequence are Mo anti-site, Si anti-site and vacancy (Mo and Si). This result suggests that the vacancy, especially for Si vacancy, is a main type of point defect in \\{C11b\\} MoSi2 system.

X.P. Li; S.P. Sun; H.J. Wang; W.N. Lei; Y. Jiang; D.Q. Yi

2014-01-01T23:59:59.000Z

240

SiMoL A Modeling Language for Simulation and (Re-)Configuration Iulia Nica and Franz Wotawa  

E-Print Network (OSTI)

be used for both simulation and configuration purposes. SiMoL is an object- oriented language that allows for (restricted) simulation and con- figuration at the same time. SiMoL is an object-oriented languageSiMoL­ A Modeling Language for Simulation and (Re-)Configuration Iulia Nica and Franz Wotawa

Jannach, Dietmar

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Synthesis and characterization of novel group VI metal (Mo, W) nitride and oxide compounds  

SciTech Connect

Investigations into the preparation of tungsten nitrides have involved the synthesis of molecular precursors, and their conversion to tungsten nitrides at relatively low temperatures. Two interesting molecular precursors, [WNCl{sub 3}{center_dot}NCCH{sub 3}]{sub 4} and WN(N{sub 3}){sub 3}{center_dot}xNCCH{sub 3}, have been prepared and characterized. The molecular structure of the first consists of a W{sub 4}N{sub 4} tetrameric core with multiple and single W-N bonds arranged in an alternating fashion. Three new solid state phases, amorphous W{sub 3}N{sub 5}, cubic WN, and W{sub 2}N{sub 2}(C{sub 2}N{sub 2}), have been discovered by solid state and chemical vapor transport reactions. The structures have been investigated. A systematic study in the Ln{sub 2}O{sub 3}-MoO{sub 3}-Mo (Ln = La, Ce, Pr, Nd, Sm) system has been explored to better understand LnMo{sub 8}O{sub 14}. The study has shown that the sizes of the rare-earth cations affect the formation of these phases. Larger cations (La, Ce, and Pr) aid in the formation of trans-Mo{sub 8} bicapped octahedra, and the smaller cations (Nd, Sm) only stabilize the cis-Mo{sub 8} bicapped octahedra. Magnetic susceptibility measurements have indicated that no effective moment contribution arises from the Mo{sub 8} metal clusters, even though the cis-Mo{sub 8} cluster in LnMo{sub 8}O{sub 14}, containing all cis-Mo{sub 8} octahedra, apparently contains an odd number of electrons (23). Electrical resistivity measurements and electronic structure calculations have shown that the LnMo{sub 8}O{sub 14} compounds containing cis-Mo{sub 8} clusters are metallic, and the LnMo{sub 8}O{sub 14} compounds containing a 1:1 ratio of cis- to trans-Mo{sub 8} clusters are semiconducting.

Zhang, Z.

1998-02-23T23:59:59.000Z

242

LS-96(11-8-88) LS-96 S. Kramer  

NLE Websites -- All DOE Office Websites (Extended Search)

n ) 1. The frequencies are then f2 nf 1 * Although this need not be the case (i.e., f1 and f2 need only be harmonically related to f o )' operationally this harmonic...

243

Investigation of the optical properties of MoS{sub 2} thin films using spectroscopic ellipsometry  

SciTech Connect

Spectroscopic ellipsometry (SE) characterization of layered transition metal dichalcogenide (TMD) thin films grown by vapor phase sulfurization is reported. By developing an optical dispersion model, the extinction coefficient and refractive index, as well as the thickness of molybdenum disulfide (MoS{sub 2}) films, were extracted. In addition, the optical band gap was obtained from SE and showed a clear dependence on the MoS{sub 2} film thickness, with thinner films having a larger band gap energy. These results are consistent with theory and observations made on MoS{sub 2} flakes prepared by exfoliation, showing the viability of vapor phase derived TMDs for optical applications.

Yim, Chanyoung; O'Brien, Maria; Winters, Sinad [School of Chemistry, Trinity College Dublin, Dublin 2 (Ireland); Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2 (Ireland); McEvoy, Niall [Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2 (Ireland); Mirza, Inam; Lunney, James G. [Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2 (Ireland); School of Physics, Trinity College Dublin, Dublin 2 (Ireland); Duesberg, Georg S., E-mail: duesberg@tcd.ie [School of Chemistry, Trinity College Dublin, Dublin 2 (Ireland); Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2 (Ireland); Advanced Materials and BioEngineering Research (AMBER) Centre, Trinity College Dublin, Dublin 2 (Ireland)

2014-03-10T23:59:59.000Z

244

Density functional theory investigation of the electronic structure and thermoelectric properties of layered MoS{sub 2}, MoSe{sub 2} and their mixed-layer compound  

SciTech Connect

First principles density functional theory calculations were carried out for the 2H-MoQ{sub 2} (Q=S and Se) and their hypothetical mixed-layer compound. Due to the different electronegativities of S and Se atoms on MoQ{sub 2}, the band gap size could be adjusted in mixed-layer compound MoS{sub 2}/MoSe{sub 2}. Also, the indirect band gap in pure MoQ{sub 2} compounds is changed to the pseudo direct band gap in mixed-layer MoS{sub 2}/MoSe{sub 2} which is similar to the monolayer compound. The layer mixing enhances the thermoelectric properties because of the increased density of states around the Fermi level and the decreased band gap size. Therefore, we suggest that this layer mixing approach should be regarded as a useful way to modulate their electronic structures and to improve their thermoelectric properties. -- Graphical abstract: On the basis of density functional calculations we predict that the mixed-layer compounds 2H-MoS{sub 2}/2H-MoSe{sub 2}, in which two different layers 2H-MoS{sub 2} and 2H-MoSe{sub 2}, have enhanced thermoelectric properties because of the increased density of states around the Fermi level and the decreased band gap size. Highlights: We explored a way of improving TE properties of 2H-MoQ{sub 2} on DFT methods. The mixed-layer compounds MoS{sub 2}/MoSe{sub 2} have enhanced thermoelectric properties. This is caused by modulated electronic structure of mixed layer compound. Layer mixing approach should be regarded as a useful way to improve TE properties.

Lee, Changhoon; Hong, Jisook [Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); Lee, Wang Ro [Faculty of Liberal Education, Chonbuk National University, Jeonju, Jeonbuk 561-756 (Korea, Republic of); Kim, Dae Yeon [Agency for Defense Development (ADD), Chinhae, Kyungnam 645-600 (Korea, Republic of); Shim, Ji Hoon, E-mail: jhshim@postech.ac.kr [Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); Divisions of Advanced Nuclear Engineering, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of)

2014-03-15T23:59:59.000Z

245

Aboveground test of an advanced Li$_2$MoO$_4$ scintillating bolometer to search for neutrinoless double beta decay of $^{100}$Mo  

E-Print Network (OSTI)

Large lithium molybdate (Li$_2$MoO$_4$) crystal boules were produced by using the low thermal gradient Czochralski growth technique from deeply purified molybdenum. A small sample from one of the boules was preliminary characterized in terms of X-ray-induced and thermally-excited luminescence. A large cylindrical crystalline element (with a size of $\\oslash 40\\times40$ mm) was used to fabricate a scintillating bolometer, which was operated aboveground at $\\sim 15$ mK by using a pulse-tube cryostat housing a high-power dilution refrigerator. The excellent detector performance in terms of energy resolution and $\\alpha$ background suppression along with preliminary positive indications on the radiopurity of this material show the potentiality of Li$_2$MoO$_4$ scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of $^{100}$Mo.

T. B. Bekker; N. Coron; F. A. Danevich; V. Ya. Degoda; A. Giuliani; V. D. Grigorieva; N. V. Ivannikova; M. Mancuso; P. de Marcillac; I. M. Moroz; C. Nones; E. Olivieri; G. Pessina; D. V. Poda; V. N. Shlegel; V. I. Tretyak; M. Velazquez

2014-10-25T23:59:59.000Z

246

Aboveground test of an advanced Li$_2$MoO$_4$ scintillating bolometer to search for neutrinoless double beta decay of $^{100}$Mo  

E-Print Network (OSTI)

Large lithium molybdate (Li$_2$MoO$_4$) crystal boules were produced by using the low thermal gradient Czochralski growth technique from deeply purified molybdenum. A small sample from one of the boules was preliminary characterized in terms of X-ray-induced and thermally-excited luminescence. A large cylindrical crystalline element (with a size of $\\oslash 40\\times40$ mm) was used to fabricate a scintillating bolometer, which was operated aboveground at $\\sim 15$ mK by using a pulse-tube cryostat housing a high-power dilution refrigerator. The excellent detector performance in terms of energy resolution and $\\alpha$ background suppression along with preliminary positive indications on the radiopurity of this material show the potentiality of Li$_2$MoO$_4$ scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of $^{100}$Mo.

T. B. Bekker; N. Coron; F. A. Danevich; V. Ya. Degoda; A. Giuliani; V. D. Grigorieva; N. V. Ivannikova; M. Mancuso; P. de Marcillac; I. M. Moroz; C. Nones; E. Olivieri; G. Pessina; D. V. Poda; V. N. Shlegel; V. I. Tretyak; M. Velazquez

2014-12-17T23:59:59.000Z

247

First bolometric measurement of the two neutrino double beta decay of $^{100}$Mo with a ZnMoO$_4$ crystals array  

E-Print Network (OSTI)

The large statistics collected during the operation of a ZnMoO$_4$ array, for a total exposure of 1.3 kg $\\cdot$ day of $^{100}$Mo, allowed the first bolometric observation of the two neutrino double beta decay of $^{100}$Mo. The observed spectrum of each crystal was reconstructed taking into account the different background contributions due to environmental radioactivity and internal contamination. The analysis of coincidences between the crystals allowed the assignment of constraints to the intensity of the different background sources, resulting in a reconstruction of the measured spectrum down to an energy of $\\sim$300 keV. The half-life extracted from the data is T$_{1/2}^{2\

L. Cardani; L. Gironi; N. Ferreiro Iachellini; L. Pattavina; J. W. Beeman; F. Bellini; N. Casali; O. Cremonesi; I. Dafinei; S. Di Domizio; F. Ferroni; E. Galashov; C. Gotti; S. Nagorny; F. Orio; G. Pessina; G. Piperno; S. Pirro; E. Previtali; C. Rusconi; C. Tomei; M. Vignati

2014-04-30T23:59:59.000Z

248

Precipitation behavior of Ni-Cr-22 Fe-18 Mo (Hastelloy-X) and Ni-Cr-22 Co-12 Mo (Inconel-617) after isothermal aging  

SciTech Connect

The precipitation behavior of the nickel-base alloys Ni-Cr-22Fe-18Mo (Hastelloy-X) and Ni-Cr-22Co12Mo (Inconel-617) has been investigated as a function of aging temperature. Hastelloy-X shows that M/sub 6/C and TiN are primary precipitates and M/sub 12/C, A/sub 3/B/sub 2/ (approx. = Fe/sub 3/Mo/sub 2/), and M/sub 23/C/sub 6/ are secondary precipitates, while Inconel-617 also has M/sub 6/C and TiN as primary precipitates and M/sub 23/C/sub 6/, M/sub 12/C, and Ni/sub 3/AlTi as secondary precipitates. The characterization has been carried out by metallographic and transmission electron microscopy investigations and by x-ray examinations of electrochemical isolated precipitates.

Kirchhofer, H.; Nickel, H.; Schubert, F.

1984-07-01T23:59:59.000Z

249

Aboveground test of an advanced Li$_2$MoO$_4$ scintillating bolometer to search for neutrinoless double beta decay of $^{100}$Mo  

E-Print Network (OSTI)

Large lithium molybdate (Li$_2$MoO$_4$) crystal boules were produced by using the low thermal gradient Czochralski growth technique from deeply purified molybdenum. A small sample from one of the boules was preliminary characterized in terms of X-ray-induced and thermally-excited luminescence. A large cylindrical crystalline element (with a size of $\\oslash 40\\times40$ mm) was used to fabricate a scintillating bolometer, which was operated aboveground at $\\sim 15$ mK by using a pulse-tube cryostat housing a high-power dilution refrigerator. The excellent detector performance in terms of energy resolution and $\\alpha$ background suppression along with preliminary positive indications on the radiopurity of this material show the potentiality of Li$_2$MoO$_4$ scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of $^{100}$Mo.

Bekker, T B; Danevich, F A; Degoda, V Ya; Giuliani, A; Grigorieva, V D; Ivannikova, N V; Mancuso, M; de Marcillac, P; Moroz, I M; Nones, C; Olivieri, E; Pessina, G; Poda, D V; Shlegel, V N; Tretyak, V I; Velazquez, M

2014-01-01T23:59:59.000Z

250

Detailed characterization of Mo/Au TES microcalorimeters  

Science Journals Connector (OSTI)

We are optimizing Mo/Au transition-edge-sensor (TES) calorimeters to meet the specifications of NASAs Constellation-X mission. Our calorimeters have already demonstrated very good energy resolution of X rays (2.4 eV at 1.5 keV). We wish to further improve the energy resolution by reducing excess noise in the calorimeters. Development of a detailed model and understanding of the noise is instrumental to reaching this goal. Towards that end we employ a linear model that describes the response of a calorimeter to signal and various sources of noise. The model is based on detailed measurements of the parameters that affect the calorimeters performance such as current-voltage characteristics of the TES thermal conductance of our silicon-nitride membranes and inductance in the electronic circuit used to bias the TES. We determine the sharpness of the superconducting phase transition by fitting the model to the measured responsivity of the calorimeter. The model relates sources of noise such as phonon noise Johnson noise and hypothetical sources of excess noise to measurements of noise in the TES. Based on this analysis we find that the excess noise is consistent with frequency-independent voltage noise in the TES

Mark A. Lindeman; Regis P. Brekosky; Enectali Figueroa-Feliciano; Fred M. Finkbeiner; Mary Li; Caroline K. Stahle; Carl M. Stahle; Nilesh Tralshawala

2002-01-01T23:59:59.000Z

251

Electrochemical Testing of Ni-Cr-Mo-Gd Alloys  

SciTech Connect

The waste package site recommendation design specified a boron-containing stainless steel, Neutronit 976/978, for fabrication of the internal baskets that will be used as a corrosion-resistant neutron-absorbing material. Recent corrosion test results gave higher-than-expected corrosion rates for this material. The material callout for these components has been changed to a Ni-Cr-Mo-Gd alloy (ASTM-B 932-04, UNS N06464) that is being developed at the Idaho National Laboratory. This report discusses the results of initial corrosion testing of this material in simulated in-package environments that could contact the fuel baskets after breach of the waste package outer barrier. The corrosion test matrix was executed using the potentiodynamic and potentiostatic electrochemical test techniques. The alloy performance shows low rates of general corrosion after initial removal of a gadolinium-rich second phase that intersects the surface. The high halide-containing test solutions exhibited greater tendencies toward initiation of crevice corrosion.

T. E. Lister; R. E. Mizia; H. Tian

2005-10-01T23:59:59.000Z

252

Microsoft Word - ls303.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Generation of Bright, Tunable, Polarized γ-Ray Sources by Scattering Laser Generation of Bright, Tunable, Polarized γ-Ray Sources by Scattering Laser Pulses from APS Electron Beams Y. Li, Y. Chae, L. Emery, Z. Huang, K. Harkay, J. Lewellen, S. V. Milton, and V. Sajaev Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 August 1, 2003 Abstract We calculate the performance of possible Advanced Photon Source (APS) γ-ray sources for applications in nuclear physics research. For the APS storage ring, it is possible to generate tagged γ-ray photon fluxes of 10 8 , 0.7×10 8 , and 0.3×10 8 photons/s at photon energies of 1, 1.7, and 2.8 GeV, respectively. For untagged photons, fluxes higher than 10 8 photons/s are possible for those energies. For the injection booster, an untagged γ-ray photon flux up

253

ls284_97.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

Stability of the APS Storage Ring Stability of the APS Storage Ring ∗ ∗ H. Friedsam, M. Penicka, J. Error Argonne National Laboratory, Argonne, Illinois, USA 1. INTRODUCTION The Advanced Photon Source (APS), a third-generation synchrotron light source, was commissioned in 1995 at Argonne National Laboratory and has been fully operational for beamline users since 1997. The APS storage ring can accommodate up to 68 user beamlines (Figure 1); about 70% of the available beamlines are currently in use by various collaborative access teams (CATs). The 7-GeV synchrotron light source produces light in the soft to hard x-ray range that is used for research in such areas as x-ray instrumentation; material, chemical and atomic sciences; biology; and geo/soil/ environmental sciences [1].

254

Microsoft Word - ls278.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

CALCULATING BPM COEFFICIENTS WITH GREEN'S RECIPROCATION CALCULATING BPM COEFFICIENTS WITH GREEN'S RECIPROCATION THEOREM S. H. Kim March 4, 1999 1. Introduction and Conclusion For a highly relativistic charged beam, the Lorentz contraction compresses the electromagnetic field of the beam into the 2-D transverse plane. This results in the induced currents on the beam chamber wall having the same longitudinal intensity modulation as the charged beam. When the wavelength of the beam intensity modulation is large compared to the dimensions of the button electrodes, which are used as beam position monitors (BPMs), the calculation of the induced currents on the buttons may be simplified as a 2-D electrostatic problem. For four-button BPMs, vertical and horizontal signals are monitored from the differences in the induced charges between the top and bottom, and right and left buttons,

255

LS-133 S. L. Kramer  

NLE Websites -- All DOE Office Websites (Extended Search)

3 3 S. L. Kramer August 1988 SPECIFICATION OF 11UTIPOLE TOLERACES FOR TH APS QUADRUPOLE MAGNET This note will address a proposed method for specifying the multipole tolerance for the design and production of APS quadrupole magnets. The tolerances for the multipole components for the quadrupole magnets will be set to that level which reduces the dynamic aperture by about 10-15% from the ideal machine dynamic aperture (as specified in CDR-87). This level may appear rather stringent, especially compared to the 50-60% reduction resulting from quad placement errors. However, when all tolerances are taken together, the residual dynamic aperture would be prohibitively small and commissioning would be difficult if these tolerances were at twice this level. The dynamic

256

thesis_ls_note.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

Longitudinal Longitudinal Coupling Impedance of a Hole In the Accelerator Beam Pipe Yong-Chul Chae Advanced Photon Source Project Argonne National Laboratory 9700 South Cass Avenue, Argonne, IL 60439 December 1993 i Abstract In the design of modern accelerators, an accurate estimate of coupling impedance is very important. The sources which give rise to coupling impedance are the geo- metric discontinuities in the accelerator beam pipe. In various discontinuities such as RF cavities, bellows, and collimators, the coupling impedance of the holes has not been well understood. Although coupling impedance can be obtained in general from the Fourier transform of the corresponding wake potential which may be obtained numerically, this is time consuming and requires a large amount of computer storage when applied to a small dimension of a discontinuity in a typical beam pipe, often imposing a fundamental

257

Microsoft Word - ls295.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Radiological Considerations for the Operation of the Radiological Considerations for the Operation of the Advanced Photon Source Storage Ring - Revised H. J. Moe September 24, 1997 1. General This report deals with the radiological considerations of operations using 7700-MeV positron and electron beams in the storage ring (SR) tunnel. The radiological considerations addressed include the following: prompt secondary radiation (bremsstrahlung, giant resonance neutrons, medium and high energy neutrons, and muons) produced by electrons/positrons interacting in a beam stop or by particle losses in the component structures; skyshine radiation, which produces a radiation field in nearby areas and at the nearest off-site location; radioactive gases produced by neutron irradiation of air in the vicinity of a particle loss site; noxious gases (ozone and others) produced in air by the

258

LS-68 S. L. Kramer  

NLE Websites -- All DOE Office Websites (Extended Search)

8 8 S. L. Kramer June 5, 1986 TOUSCHEK LIFETIME CALCULATIONS s. L. Kramer The Touschek lifetime calculated by Bruck(l) Eq. 30.17 2 .r; r cN e 1 dN C(e) N -- = --- = ----------~-- TT Ndt 6P (6P f)2V x r p = - is proportional to N(t). Therefore, the functional form of N(t) is not exponential, but rather given by(2) N o N(t) = -~~ H t 1 +-2.... a where No = N(t = 0) the number of particles in the bunch at time t = O. Since TT is usually calculated for N = No N then N( t) 0 = 1 +.-! TT At time t = TT' the number of particles in the bunch is N(t = 'T) = 1/2 No, i. e., 'T is a half lifetime. Then the time to decay to e- 1 is (1) 'e = 1.7183 'T. Care must be taken in using Eq. (1) because of the normalized units used for 6P x and 6P rf where

259

LS-86 T. K. Khoe  

NLE Websites -- All DOE Office Websites (Extended Search)

6 6 T. K. Khoe October 1988 SUPERCONDUCTING CAVITIES IN THE LIGHT SOURCE STORAGE RING The synchrotron radiation loss in the Conceptual Design Report (CDR) storage ring at the design energy of 6 GeV is 4.6 MeV per turn. At 7.7 GeV, the energy loss will increase to 12.5 MeV per turn. Instead of increasihg the ring circumference, one can increase the rf voltage per straight section by using superconducting cavities. Several laboratories (CERN, KEK, DESY) are making definite plans to use them. Accelerating fields of at least 3 MeV/m are obtained. The spherical and elliptical cavity shapes reduce the problem of multipactoring. The main problems of using superconducting cavities in "high current" storage are the input coupling of the fundamental mode and the

260

LS8548 2..5  

NLE Websites -- All DOE Office Websites (Extended Search)

Internal Magnetic Field Fluctuations in a Reversed-Field Pinch by Faraday Rotation W. X. Ding, D. L. Brower, and S. D. Terry Electrical Engineering Department, University of...

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261

Microsoft Word - ls280.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Photon Source 9700 South Cass Avenue, Argonne, IL 60439 June 30, 1999 I. Introduction A low-energy undulator test line (LEUTL) is under construction at the...

262

LS-l Y. Cho  

NLE Websites -- All DOE Office Websites (Extended Search)

The eta function shown in Fig. 1 has a magnification factor of ten and displaced by 2 ten in order to show the details. In Fig. 1, the insertion straight section is shown in...

263

Microsoft Word - ls311.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Achievable Magnetic Fields of Super-Ferric Helical Undulators Achievable Magnetic Fields of Super-Ferric Helical Undulators for the ILC S.H. Kim Advanced Photon Source, Argonne National Laboratory Abstract - The magnetic fields on the beam axis of helical undulators for the proposed International Linear Collider (ILC) gamma-ray production were calculated for undulator periods of 10 mm and 12 mm. The calculation assumed the use of low-carbon steel for the magnetic poles and a beam chamber outer diameter of 6.3 mm. Using NbTi superconducting coils at 4.2 K, the on-axis field for a 10-mm-period undulator was 0.62 T at the critical current density. The field for a 12-mm undulator period was 0.95 T, which gives a K value of 1.06. The K value for an 11-mm undulator with Nb 3 Sn superconducting coils was estimated to about 1.1.

264

Ring size and strain as a control of reaction selectivity: ethylene sulfide on Mo(110)  

SciTech Connect

The adsorption and reaction of sulfur-containing organic on single-crystal transition-metal surfaces form a subject of current to the authors and others. The primary focus of their work is an investigation of how thermodynamic properties of adsorbate molecules affect the mechanism(s) by which they react. To this end, they have studied the reactions of two saturated cyclic sulfides-trimethylene sulfide (c-C/sub 3/H/sub 6/S) and tetrahydrothiophene (c-C/sub 4/H/sub 8/S)--on Mo(110). On the basis of these studies they proposed that ring strain in the cyclic sulfide controls reaction selectivity on Mo(110). This work concerns the reactions of a third cyclic sulfide, ethylene sulfide (c-C/sub 2/H/sub 4/S), on Mo(110). The results presented here demonstrate that ring size as well as ring strain determines the reaction selectivity of cyclic sulfides on Mo(110).

Roberts, J.T.; Friend, C.M.

1987-12-09T23:59:59.000Z

265

Growth and crystal structure of binary molybdate CsFe(MoO{sub 4}){sub 2}  

SciTech Connect

CsFe(MoO{sub 4}){sub 2} single crystals have been grown by solution-melt crystallization with a charge-to-solvent ratio of 1: 3 (with Cs{sub 2}Mo{sub 3}O{sub 10} used as a solvent). The crystal structure of this compound has been refined by X-ray diffraction (X8 APEX automatic diffractometer, MoK{sub {alpha}} radiation, 356 F(hkl), R = 0.0178). The trigonal unit cell has the following parameters: a = b = 5.6051(2) A, c = 8.0118(4) A, V = 217.985(15) A{sup 3}, Z = 1, {rho}{sub calc} = 3.875 g/cm{sup 3}, and sp. gr. P3-barm1. The structure is composed of alternating layers of FeO{sub 6} octahedra (with MoO{sub 4} tetrahedra attached by sharing vertices) and CsO{sub 12} icosahedra.

Bazarov, B. G., E-mail: jbaz@binm.bscnet.ru; Namsaraeva, T. V. [Russian Academy of Sciences, Baikal Institute of Nature Management, Siberian Branch (Russian Federation); Klevtsova, R. F., E-mail: klev@che.nsk.su; Anshits, A. G. [Russian Academy of Sciences, Institute of Inorganic Chemistry, Siberian Branch (Russian Federation); Vereshchagina, T. A. [Russian Academy of Sciences, Institute of Chemistry and Chemical Technology, Siberian Branch (Russian Federation); Glinskaya, L. A. [Russian Academy of Sciences, Institute of Inorganic Chemistry, Siberian Branch (Russian Federation); Fedorov, K. N.; Bazarova, Zh. G. [Russian Academy of Sciences, Baikal Institute of Nature Management, Siberian Branch (Russian Federation)

2010-07-15T23:59:59.000Z

266

Cr17Ni14Mo3 Powder Laser Cladding on 45Steel Substrate  

Science Journals Connector (OSTI)

The relationship between laser power, scan-rate, thickness of pre-placed powder particles, overlap, preheating and laser cladding coating quality was analyzed. Laser cladding of Cr17Ni14Mo3 stainless steel powder...

Sun Huilai; Lin Shuzhong; Zhao Fangfang; Qi Xiangyang

2010-01-01T23:59:59.000Z

267

Electronic structure of alkaline metal hydrides according to MO LCAO-SCF-CNDO cluster calculations  

Science Journals Connector (OSTI)

This paper presents the results of a quantum chemical study of compounds MH (M = Li, Na, K, Rb, and Cs) in a cluster approximation. The calculations were performed by the MO LCAO-SCF- ... model systems of high-te...

E. A. Zharikova; A. I. Ermakov; R. P. Ozerov

268

Phase Development in a U-7 wt.% Mo vs. Al-7 wt.% Ge Diffusion Couple  

SciTech Connect

Fuel development for the Reduced Enrichment for Research and Test Reactors (RERTR) program has demonstrated that U-Mo alloys in contact with Al develop interaction regions with phases that have poor irradiation behavior. The addition of Si to the Al has been considered with positive results. Compositional modification to replace Si with Ge is now under evaluation to attempt to further improve irradiation behavior. In this study, the microstructural and phase development of a diffusion couple of U-7 wt.% Mo in contact with Al-7 wt.% Ge was examined by transmission electron microscopy, scanning electron microscopy and energy dispersive spectroscopy. The interdiffusion zone developed a microstructure that included the cubic-UGe3 phase and amorphous phases. The UGe3 phase was observed with and without Mo and Al solid solutioning developing a (U,Mo)(Al,Ge)3 phase.

E. Perez; D.D. Keiser, Jr.; Y.H. Sohn

2013-10-01T23:59:59.000Z

269

AB INITIO Modeling of Thermomechanical Properties of Mo-Based Alloys for Fossil Energy Conversion  

SciTech Connect

In this final scientific/technical report covering the period of 3.5 years started on July 1, 2011, we report the accomplishments on the study of thermo-mechanical properties of Mo-based intermetallic compounds under NETL support. These include computational method development, physical properties investigation of Mo-based compounds and alloys. The main focus is on the mechanical and thermo mechanical properties at high temperature since these are the most crucial properties for their potential applications. In particular, recent development of applying ab initio molecular dynamic (AIMD) simulations to the T1 (Mo{sub 5}Si{sub 3}) and T2 (Mo{sub 5}SiB{sub 2}) phases are highlighted for alloy design in further improving their properties.

Ching, Wai-Yim

2013-12-31T23:59:59.000Z

270

Mo{sub 5}Si{sub 3} single crystals: Physical properties and mechanical behavior  

SciTech Connect

The materials processing, physical properties and mechanical behavior of an ultra-high temperature structural silicide, Mo{sub 5}Si{sub 3}, have been studied. High purity single crystals of Mo{sub 5}Si{sub 3} have been synthesized by both optical floating zone and Czochralski methods. The thermal and elastic properties of the MO{sub 5}Si{sub 3} single crystals were experimentally measured. Results show that Mo{sub 5}Si{sub 3} has significant thermal expansion anisotropy along the a and c directions with {alpha}{sub c}/{alpha}{sub a} = 2.2. Single crystal elastic moduli of Mo{sub 5}Si{sub 3} indicate that it has less elastic anisotropy and lower shear moduli than transition metal disilicides. Tensile stresses of up to 1.8 GPa can develop at grain boundaries after cooling from the melting point due to the thermal expansion mismatch in Mo{sub 5}Si{sub 3}, causing grain boundary cracking during processing of polycrystals. Room temperature Vickers indentation tests on (100) and (001) planes have been performed with different indenter diagonal orientations. The orientation dependence of hardness and fracture toughness of Mo{sub 5}Si{sub 3} single crystals have been obtained. The corresponding deformation and fracture modes have been revealed by microscopy studies. A comparison of Mo{sub 5}Si{sub 3} with other high temperature structural silicides, e.g., C11{sub b} and C40 transition metal disilicides, is discussed.

Chu, F.; Thoma, D.J.; McClellan, K.J.; Peralta, P.

1998-12-01T23:59:59.000Z

271

MoS{sub 2} nanotube exfoliation as new synthesis pathway to molybdenum blue  

SciTech Connect

Graphical abstract: . Display Omitted Highlights: ? New synthesis approach to obtaining molybdenum blue via exfoliated MoS{sub 2} nanotubes. ? Material is prone to self assembly and is stable in high vacuum. ? Molecules are as small as 2 nm and their clusters are up to tens of nanometers. ? Change in absorption and oxidation states from the precursor MoS{sub 2}. -- Abstract: Molybdenum blue-type materials are usually obtained by partially reducing Mo{sup VI+} in acidic solutions, while in the presented method it is formed in ethanol solution of exfoliated MoS{sub 2} nanotubes, where the MoS{sub 2} flakes are the preferential location for their growth. Material was investigated by means of scanning electron and atomic force microscopy, showing the structure and self assembly, while also confirming that it is stable in high vacuum with molecules as small as 1.6 nm and the agglomerates of few tens of nanometres. The ultravioletvisible and photoelectron spectrometry show the change in absorption properties and oxidation states from MoS{sub 2} structure to molybdenum blue, while the presence of sulphur suggests that this is a new type of molybdenum blue material.

Visic, B., E-mail: bojana.visic@ijs.si [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Gunde, M. Klanjsek [National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana (Slovenia)] [National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana (Slovenia); Kovac, J.; Iskra, I. [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia)] [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Jelenc, J.; Remskar, M. [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia) [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Centre of Excellence Namaste, Jamova cesta 39, SI-1000 Ljubljana (Slovenia)

2013-02-15T23:59:59.000Z

272

Soft zone formation in dissimilar welds between two Cr-Mo steels  

SciTech Connect

Two dissimilar weldments between 9Cr-1Mo and 2.25Cr-1Mo ferritic steels have been characterized for their microstructural stability during various postweld heat treatments (PWHTs). The samples for the investigation were extracted from bead-on-plate weldments made by depositing 2.25Cr-1Mo weld metal on 9Cr-1Mo base plate and vice versa. Subsequent application of PWHT resulted in the formation of a soft zone in the low Cr ferritic steel weld or base plate. A carbide-rich hard zone, adjoining the soft zone, was also detected in the high Cr side of the weldment. Unmixed zones in the weld metal provided additional soft and hard zones in the weld metals. The migration of carbon from low-Cr steel to high-Cr steel, driven by the carbon activity gradient, has been shown to be responsible for the formation of soft and hard zones. A carbon activity diagram for 2.25Cr-1Mo/9Cr-1Mo weldments has been proposed to aid in the selection of welding consumables for reducing or preventing the soft zone formation.

Albert, S.K.; Gill, T.P.S.; Tyagi, A.K.; Mannan, S.L.; Rodriguez, P. [Indira Gandhi Centre for Atomic Research, Kalpakkam (India); Kulkarni, S.D. [Indian Inst. of Tech., Bombay (India)

1997-03-01T23:59:59.000Z

273

Control of absorption of monolayer MoS$_{2}$ thin-film transistor in one-dimensional defective photonic crystal  

E-Print Network (OSTI)

The light absorption and transmission of monolayer MoS$_{2}$ in a one-dimensional defective photonic crystal (d-1DPC) is theoretically investigated. The study shows that the strong interference effect decreases photon density in particular areas of the microcavity. The d-1DPC can reduce light absorption of monolayer MoS$_{2}$ and enhance light transmission. The impact of monolayer MoS$_{2}$ light absorption on the localization effect of photon is investigated when monolayer MoS$_{2}$ and the organic light-emitting diode are located in the same microcavity. However, monolayer MoS$_{2}$ does not reduce the localization effect of light by regulating the position of monolayer MoS$_{2}$ in the microcavity.

Yang, Fang-Fang; Xiao, Wen-bo; Liu, Jiang-Tao; Liu, Nian-Hua

2014-01-01T23:59:59.000Z

274

Local structure of amorphous \\{MO50Ni50\\} determined by anomalous x-ray scattering using synchroton radiation  

Science Journals Connector (OSTI)

Anomalous (resonance) x-ray scattering technique using synchrotron radiation was applied to determine the compositionally resolved local structure of sputter deposited amorphous Mo50Ni50. The local environments of Mo atoms and Ni atoms were found to be significantly different from each other, but similar to the corresponding local environments in crystalline MoNi. The results compare favorably with those of the EXAFS measurement.

S. Aur; D. Kofalt; Y. Waseda; T. Egami; R. Wang; H.S. Chen; Boon-Keng Teo

1983-01-01T23:59:59.000Z

275

Magnetic mineralogy of pelagic limestones  

Science Journals Connector (OSTI)

......are found in pelagic lime- 434 R. Freeman stones...each phase of magnetic mineral, and indicates some...to the Rock-forming Minerals, Long- mans, Green & Co., London. El...1976. Opaque oxide minerals in meteorites, in Oxide......

Roy Freeman

1986-04-01T23:59:59.000Z

276

van der Waals Epitaxy of MoS2 Layers Using Graphene As Growth Templates  

SciTech Connect

We present a method for synthesizing MoS{sub 2}/Graphene hybrid heterostructures with a growth template of graphene-covered Cu foil. Compared to other recent reports, a much lower growth temperature of 400 C is required for this procedure. The chemical vapor deposition of MoS{sub 2} on the graphene surface gives rise to single crystalline hexagonal flakes with a typical lateral size ranging from several hundred nanometers to several micrometers. The precursor (ammonium thiomolybdate) together with solvent was transported to graphene surface by a carrier gas at room temperature, which was then followed by post annealing. At an elevated temperature, the precursor self-assembles to form MoS{sub 2} flakes epitaxially on the graphene surface via thermal decomposition. With higher amount of precursor delivered onto the graphene surface, a continuous MoS{sub 2} film on graphene can be obtained. This simple chemical vapor deposition method provides a unique approach for the synthesis of graphene heterostructures and surface functionalization of graphene. The synthesized two-dimensional MoS{sub 2}/Graphene hybrids possess great potential toward the development of new optical and electronic devices as well as a wide variety of newly synthesizable compounds for catalysts.

Shi, Yumeng [Massachusetts Institute of Technology (MIT); Zhou, Wu [Vanderbilt University; Lu, Ang-Yu [Academia Sinica, Hefei, China; Fang, Wenjing [Massachusetts Institute of Technology (MIT); Lee, Yi-Hsien [Massachusetts Institute of Technology (MIT); Hsu, Allen Long [Massachusetts Institute of Technology (MIT); Kim, Soo Min [Massachusetts Institute of Technology (MIT); Kim, Ki Kang [Massachusetts Institute of Technology (MIT); Yang, Hui Ying [Singapore University of Technology and Design; Liang, Lain-Jong [Academia Sinica, Hefei, China; Idrobo Tapia, Juan C [ORNL; Kong, Jing [Massachusetts Institute of Technology (MIT)

2012-01-01T23:59:59.000Z

277

TEM Characterization of High Burn-up Microstructure of U-7Mo Alloy  

SciTech Connect

As an essential part of global nuclear non-proliferation effort, the RERTR program is developing low enriched U-Mo fuels (< 20% U-235) for use in research and test reactors that currently employ highly enriched uranium fuels. One type of fuel being developed is a dispersion fuel plate comprised of U-7Mo particles dispersed in Al alloy matrix. Recent TEM characterizations of the ATR irradiated U-7Mo dispersion fuel plates include the samples with a local fission densities of 4.5, 5.2, 5.6 and 6.3 E+21 fissions/cm3 and irradiation temperatures of 101-136?C. The development of the irradiated microstructure of the U-7Mo fuel particles consists of fission gas bubble superlattice, large gas bubbles, solid fission product precipitates and their association to the large gas bubbles, grain subdivision to tens or hundreds of nanometer size, collapse of bubble superlattice, and amorphisation. This presentation will describe the observed microstructures specifically focusing on the U-7Mo fuel particles. The impact of the observed microstructure on the fuel performance and the comparison of the relevant features with that of the high burn-up UO2 fuels will be discussed.

Jian Gan; Brandon Miller; Dennis Keiser; Adam Robinson; James Madden; Pavel Medvedev; Daniel Wachs

2014-04-01T23:59:59.000Z

278

Effect of Mo on pitting corrosion of ferritic steels in bromide and chloride solutions  

SciTech Connect

A model for pitting corrosion of stainless steels, independent of changes of passive film properties, was tested using Fe-18%Cr-x%Mo alloys in bromide and chlorine solutions. In 1M LiCl the pitting potential improved from {minus}50 mV{sub sce} to about 1200 mV{sub sce} on increasing Mo from 2% to 10%. In 1M LiBr the pitting potential increased from 125 to only 560 mV{sub sce}. Active dissolution kinetics of these steels in saturated solutions in a simulated pit were measured. Tafel lines for dissolution moved to more noble potentials with increases in Mo, indicating Mo inhibited dissolution rates. The potential increases were found to be equal to the increases in pitting potential for both halides. Agreement was interpreted in terms maintaining high halide concentrations in the pit by high rates of active metal dissolution. Bromide was less effective suggesting it interacted with Mo adsorbed on the dissolving surface.

Kaneko, M. [Nippon Steel Corp., Futtsu Chiba (Japan). Steel Research Lab; Isaacs, H.S. [Brookhaven National Lab., Upton, NY (United States)

1997-12-01T23:59:59.000Z

279

The Physics Programme Of The MoEDAL Experiment At The LHC  

E-Print Network (OSTI)

The MoEDAL experiment at Point 8 of the LHC ring is the seventh and newest LHC experiment. It is dedicated to the search for highly ionizing particle avatars of physics beyond the Standard Model, extending significantly the discovery horizon of the LHC. A MoEDAL discovery would have revolutionary implications for our fundamental understanding of the Microcosm. MoEDAL is an unconventional and largely passive LHC detector comprised of the largest array of Nuclear Track Detector stacks ever deployed at an accelerator, surrounding the intersection region at Point 8 on the LHC ring. Another novel feature is the use of paramagnetic trapping volumes to capture both electrically and magnetically charged highly-ionizing particles predicted in new physics scenarios. It includes an array of TimePix pixel devices for monitoring highly-ionizing particle backgrounds. The main passive elements of the MoEDAL detector do not require a trigger system, electronic readout, or online computerized data acquisition. The aim of this paper is to give an overview of the MoEDAL physics reach, which is largely complementary to the programs of the large multi-purpose LHC detectors ATLAS and CMS.

B. Acharya; J. Alexandre; J. Bernabu; M. Campbell; S. Cecchini; J. Chwastowski; M. De Montigny; D. Derendarz; A. De Roeck; J. R. Ellis; M. Fairbairn; D. Felea; M. Frank; D. Frekers; C. Garcia; G. Giacomelli; M. Giorgini; D. Ha?egan; T. Hott; J. Jak?bek; A. Katre; D-W Kim; M. G. L. King; K. Kinoshita; D. Lacarrere; S. C. Lee; C. Leroy; A. Margiotta; N. Mauri; N. E. Mavromatos; P. Mermod; V. A. Mitsou; R. Orava; L. Pasqualini; L. Patrizii; G. E. P?v?la?; J. L. Pinfold; M. Platkev?; V. Popa; M. Pozzato; S. Pospisil; A. Rajantie; Z. Sahnoun; M. Sakellariadou; S. Sarkar; G. Semenoff; G. Sirri; K. Sliwa; R. Soluk; M. Spurio; Y. N. Srivastava; R. Staszewski; J. Swain; M. Tenti; V. Togo; M. Trzebinski; J. A. Tuszy?ski; V. Vento; O. Vives; Z. Vykydal; A. Widom; J. H. Yoon

2014-05-29T23:59:59.000Z

280

Elementary Steps of Syngas Reactions on Mo2C(001): Adsorption Thermochemistry and Bond Dissociation  

SciTech Connect

Density functional theory (DFT) and ab initio thermodynamics are applied in order to investigate the most stable surface and subsurface terminations of Mo{sub 2}C(001) as a function of chemical potential and in the presence of syngas. The Mo-terminated (001) surface is then used as a model surface to evaluate the thermochemistry and energetic barriers for key elementary steps in syngas reactions. Adsorption energy scaling relations and Broensted-Evans-Polanyi relationships are established and used to place Mo{sub 2}C into the context of transition metal surfaces. The results indicate that the surface termination is a complex function of reaction conditions and kinetics. It is predicted that the surface will be covered by either C{sub 2}H{sub 2} or O depending on conditions. Comparisons to transition metals indicate that the Mo-terminated Mo{sub 2}C(001) surface exhibits carbon reactivity similar to transition metals such as Ru and Ir, but is significantly more reactive towards oxygen.

Medford, Andrew

2012-02-16T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

EA-1947: Transfer of the Kansas City Plant, Kansas City, MO | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EA-1947: Transfer of the Kansas City Plant, Kansas City, MO EA-1947: Transfer of the Kansas City Plant, Kansas City, MO EA-1947: Transfer of the Kansas City Plant, Kansas City, MO SUMMARY This EA evaluates potential environmental impacts of a proposal to transfer the NNSA's KCP property either in whole or in part. This includes considering the No Action Alternative, where NNSA relocates operations from the KCP and maintains ownership of its property; and the Proposed Action Alternative, where NNSA transfers the KCP property for mixed use (industrial, warehouse, commercial, office). Under the proposed action, the EA addresses the potential direct, indirect, and cumulative impacts of using the KCP property for uses consistent with current zoning. NNSA also analyzes the potential environmental impacts of partial and/or complete

282

EIS-0475: Disposition of the Bannister Federal Complex, Kansas City, MO |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EIS-0475: Disposition of the Bannister Federal Complex, Kansas EIS-0475: Disposition of the Bannister Federal Complex, Kansas City, MO EIS-0475: Disposition of the Bannister Federal Complex, Kansas City, MO Summary NNSA/DOE announces its intent to prepare an EIS for the disposition of the Bannister Federal Complex, Kansas City, MO. NNSA previously decided in a separate NEPA review (EA-1592) to relocate its operations from the Bannister Federal Complex to a newly constructed industrial campus eight miles from the current location. NOTE: On November 30, 2012, DOE announced the cancellation of this EIS and its intent to prepare an Environmental Assessment (EA-1947). Public Comment Opportunities None available at this time. Documents Available for Download November 30, 2012 EA-1947: Notice of Intent to Prepare an Environmental Assessment and

283

DOE - Office of Legacy Management -- Weldon Spring Chemical Co - MO 03  

NLE Websites -- All DOE Office Websites (Extended Search)

Weldon Spring Chemical Co - MO 03 Weldon Spring Chemical Co - MO 03 FUSRAP Considered Sites Site: Weldon Spring Chemical Co. (MO.03) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: Also see Weldon Spring, Missouri, Site Documents Related to Weldon Spring Chemical Co. Summary of Work Session - Focus Area: Monitoring and Maintenance. Summary of Weldon Spring Long-Term Stewardship Plan Public Workshop. Summary of Work Session - Focus Area: Communication and Public Involvement. Land Use and Institutional Controls and Homeland SecurityFocus Area Work SessionWeldon Spring SiteInterpretive CenterDecember 5, 20022 Agenda7:00 p.m.Welcome, Pam Thompson, Manager, Weldon SpringObjective of

284

EA-1947: Transfer of the Kansas City Plant, Kansas City, MO | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EA-1947: Transfer of the Kansas City Plant, Kansas City, MO EA-1947: Transfer of the Kansas City Plant, Kansas City, MO EA-1947: Transfer of the Kansas City Plant, Kansas City, MO SUMMARY This EA evaluates potential environmental impacts of a proposal to transfer the NNSA's KCP property either in whole or in part. This includes considering the No Action Alternative, where NNSA relocates operations from the KCP and maintains ownership of its property; and the Proposed Action Alternative, where NNSA transfers the KCP property for mixed use (industrial, warehouse, commercial, office). Under the proposed action, the EA addresses the potential direct, indirect, and cumulative impacts of using the KCP property for uses consistent with current zoning. NNSA also analyzes the potential environmental impacts of partial and/or complete

285

DENSITY-FUNCTIONAL STUDY OF U-Mo AND U-Zr ALLOYS  

SciTech Connect

Density-functional theory previously used to describe phase equilibria in U-Zr alloys [A. Landa, P. Soederlind, P.E.A. Turchi, J. Alloys Comp. 478 (2009) 103-110] is extended to investigate the ground-state properties of U-Mo solid solutions. We discuss how the heat of formation in both alloys correlates with the charge transfer between the alloy components, and how the specific behavior of the density of states in the vicinity of the Fermi level promotes the stabilization of the U{sub 2}Mo compound. Our calculations prove that, due to the existence of a single {gamma}-phase over the typical fuel operation temperatures, {gamma}-U-Mo alloys should indeed have much lower constituent redistribution than {gamma}-U-Zr alloys for which binodal decomposition causes a high degree of constituent redistribution.

Landa, A; Soderlind, P; Turchi, P A

2010-11-01T23:59:59.000Z

286

The development of uranium foil farication technology utilizing twin roll method for Mo-99 irradiation target  

E-Print Network (OSTI)

MDS Nordion in Canada, occupying about 75% of global supply of Mo-99 isotope, has provided the irradiation target of Mo-99 using the rod-type UAl sub x alloys with HEU(High Enrichment Uranium). ANL (Argonne National Laboratory) through co-operation with BATAN in Indonesia, leading RERTR (Reduced Enrichment for Research and Test Reactors) program substantially for nuclear non-proliferation, has designed and fabricated the annular cylinder of uranium targets, and successfully performed irradiation test, in order to develop the fabrication technology of fission Mo-99 using LEU(Low Enrichment Uranium). As the uranium foils could be fabricated in laboratory scale, not in commercialized scale by hot rolling method due to significant problems in foil quality, productivity and economic efficiency, attention has shifted to the development of new technology. Under these circumstances, the invention of uranium foil fabrication technology utilizing twin-roll casting method in KAERI is found to be able to fabricate LEU or...

Kim, C K; Park, H D

2002-01-01T23:59:59.000Z

287

Toughness of Cr-Mo-V steels for steam-turbine rotors  

SciTech Connect

Cr-Mo-V steels are used extensively as the rotor material in the High Pressure and Intermediate Pressure Sections of modern steam turbines. The toughness of these rotors has a major influence on the reliability and efficiency of the turbine and the overall economy of operation and maintenance of the plant. The metallurgical factors affecting the toughness of the rotors and the methods to improve the toughness are now understood better than ever before. This paper will present a broad overview of the materials and design aspects of the toughness of Cr-Mo-V rotors with emphasis on the salient results of recent research programs aimed at improving their toughness.

Viswanathan, R.; Jaffee, R.I.

1982-04-01T23:59:59.000Z

288

MoO3 trapping layers with CF4 plasma treatment in flash memory applications  

Science Journals Connector (OSTI)

Abstract In this research, we used MoO3 with CF4 plasma treatment as charge trapping layer in metal-oxide-high-k -oxide-Si-type memory. We analyzed material properties and electrical characteristics with multiple analyses. The plasma treatment could increase the trapping density, reduce the leakage current, expand band gap, and passivate the defect to enhance the memory performance. The MoO3 charge trapping layer memory with suitable CF4 plasma treatment is promising for future nonvolatile memory applications.

Chuyan Haur Kao; Hsiang Chen; Su-Zhien Chen; Chian Yu Chen; Kuang-Yu Lo; Chun Han Lin

2014-01-01T23:59:59.000Z

289

Removal of B, Cr, Mo, and Se from Wastewater by Incorporation into Hydrocalumite and Ettringite  

Science Journals Connector (OSTI)

Removal of B, Cr, Mo, and Se from Wastewater by Incorporation into Hydrocalumite and Ettringite ... During the leaching of fly ash in alkaline environments, hydrocalumite (Ca4Al2(OH)12(OH)26H2O) and ettringite (Ca6Al2(OH)12(SO4)326H2O) form as secondary precipitates. ... In this study, the removal of B, Cr, Mo, and Se oxyanions from high pH waters by incorporation into hydrocalumite and ettringite was examined. ...

Min Zhang; Eric J. Reardon

2003-06-03T23:59:59.000Z

290

Mo-99 production at the Annular Core Research Reactor - recent calculative results  

SciTech Connect

Significant progress has been made over the past year in understanding the chemistry and processing challenges associated with {sup 99}Mo production using Cintichem type targets. Targets fabricated at Los Alamos National Laboratory have been successfully irradiated in fuel element locations at the Annular Core Research Reactor (ACRR) and processed at the Sandia Hot Cell Facility. The next goal for the project is to remove the central cavity experiment tube from the reactor core, allowing for the irradiation of up to 37 targets. After the in-core work is complete, the reactor will be capable of producing significant quantities of {sup 99}Mo.

Parma, E.J.

1997-11-01T23:59:59.000Z

291

Substitution of modified 9 Cr-1 Mo steel for austentic stainless steels  

SciTech Connect

This report describes the current program to develop a high-strength ferritic-martensitic steel. The alloy is essentially Fe-9% Cr-1% Mo with small additions of V and Nb and is known as modifed 9 Cr-1 Mo steel. Its elevated-temperature properties and design allowable stresses match those of type 304 stainless steel for temperatures up to 600/sup 0/C and exceed those of other ferritic steels by factors of 2 to 3. The improved strength of this alloy permits its use in place of stainless steels for many applications.

Sikka, V. K.

1982-04-01T23:59:59.000Z

292

The physics case for the MoEDAL experiment at LHC  

E-Print Network (OSTI)

The MoEDAL experiment (Monopole and Exotics Detector at the LHC) is designed to directly search for magnetic monopoles and other highly-ionising stable or metastable particles arising in theoretical scenarios beyond the Standard Model. Its physics goals are accomplished by the deployment of plastic nuclear track detectors combined with trapping volumes for capturing charged highly-ionising particles and TimePix pixel devices for monitoring. This paper is an overview of the MoEDAL physics reach, which is largely complementary to the programs of the large multi-purpose LHC detectors ATLAS and CMS.

Mitsou, Vasiliki A

2014-01-01T23:59:59.000Z

293

MoS2 Nanoplates Consisting of Disordered Graphene-like Layers for High Rate Lithium Battery Anode Materials  

Science Journals Connector (OSTI)

MoS2 nanoplates, consisting of disordered graphene-like layers, with a thickness of ?30 nm were prepared by a simple, scalable, one-pot reaction using Mo(CO)6 and S in an autoclave. The product has a interlayer distance of 0.69 nm, which is much larger ...

Haesuk Hwang; Hyejung Kim; Jaephil Cho

2011-09-29T23:59:59.000Z

294

Solar Energy Materials & Solar Cells 58 (1999) 199}208 The behaviour of Na implanted into Mo thin "lms  

E-Print Network (OSTI)

Solar Energy Materials & Solar Cells 58 (1999) 199}208 The behaviour of Na implanted into Mo thin, As ngstro( m Solar Center, P.O. Box 534, SE-751 21 Uppsala, Sweden Department of Materials Science Mo thin "lms used as back contacts for Cu(In,Ga)Se solar cells. The samples were analysed

Rockett, Angus

295

Magnetic properties of MoS2: Existence of ferromagnetism Sefaattin Tongay,1,2,a),b)  

E-Print Network (OSTI)

Magnetic properties of MoS2: Existence of ferromagnetism Sefaattin Tongay,1,2,a),b) Sima S 4 September 2012; published online 18 September 2012) We report on the magnetic properties of MoS2 measured from room temperature down to 10K and magnetic fields up to 5 T. We find that single crystals

Wu, Junqiao

296

Materials Science and Engineering A261 (1999) 4452 Mo5Si3 single crystals: physical properties and mechanical behavior  

E-Print Network (OSTI)

. Among these phases, refractory metal silicides appear to be more attractive because of their ultra-high melting temperatures [1]. Among the refractory metal silicides, the silicides in the Mo­Si system show processing, physical properties and mechanical behavior of an ultrahigh temperature structural silicide, Mo5

297

11/04/02 G. W. Rubloff AVS 2002 MS MoA5 1 Spatially Programmable Reactor Design  

E-Print Network (OSTI)

optimization is constrained by fixed reactor design manufacturing #12;11/04/02 G. W. Rubloff ­ AVS 2002 ­ MS Mo spatial conditions in programmable reactor Uniformity unacceptable Produce high uniformity with optimal11/04/02 G. W. Rubloff ­ AVS 2002 ­ MS MoA5 1 Spatially Programmable Reactor Design: Toward a New

Rubloff, Gary W.

298

Using direct hot-rolling approach to obtain dual-phase weathering steel CuPCrNiMo  

Science Journals Connector (OSTI)

A weathering steel CuPCrNiMo has been ... based on the continuous cooling transformation diagram of weathering steel CuPCrNiMo. The results show that the microstructures of DP weathering steels CuPCrNi...

Chunling Zhang; Dayong Cai; Bo Liao; Yunchang Fan

2010-01-01T23:59:59.000Z

299

Small non-polar complexes exhibiting significant piezoelectric properties: Solvothermal synthesis and crystal structures of MO{sub 5}V(tren){center_dot}H{sub 2}O (M=Mo and W; tren=tris(2-aminoethyl)amine)  

SciTech Connect

The two isostructural complexes MO{sub 5}V(tren){center_dot}H{sub 2}O (M=Mo (1) and W (2)) were synthesized under solvothermal conditions at pH Almost-Equal-To 12 crystallizing in the non-centrosymmetric space group P2{sub 1}2{sub 1}2{sub 1}. The structures are constructed by a distorted tetrahedral [MO{sub 4}]{sup 2-} anion bound via one shared oxygen atom to a severely distorted [V{sup IV}N{sub 4}O]{sup 2+} complex completing the octahedral coordination around the V centre. The two O atoms in the VN{sub 4}O{sub 2} octahedron are in cis position. The two compounds represent rare examples where the [MO{sub 4}]{sup 2-} anion is acting as a ligand. Both compounds exhibit a piezoelectric effect which is more pronounced for M=Mo. The samples are further characterized with IR and UV/Vis spectroscopy and thermal analysis. - Graphical abstract: The complexes [(V(tren)O)(MO4)]{center_dot}H2O (M = Mo, W; tren = tris(2-aminoethyl)amine)) composed of vertex-linked [MO4]{sup 2-} tetrahedron and [VN4O6]{sup 2+}octahedron. Highlights: Black-Right-Pointing-Pointer [MO{sub 4}]{sup 2-} tetrahedron (M=Mo, W) acting as ligand. Black-Right-Pointing-Pointer Jahn-Teller and steric distortion of the [VN{sub 4}O{sub 2}]{sup 2+} octahedron. Black-Right-Pointing-Pointer Non-centrosymmetric complexes exhibiting pronounced piezoelectric effect.

Rasmussen, M.; Naether, C. [Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet Kiel, Max-Eyth-Str. 2, D-24118 Kiel (Germany)] [Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet Kiel, Max-Eyth-Str. 2, D-24118 Kiel (Germany); Bismayer, U. [Mineralogisch-Petrographisches Institut, Universitaet Hamburg, Grindelallee 48 20146 Hamburg (Germany)] [Mineralogisch-Petrographisches Institut, Universitaet Hamburg, Grindelallee 48 20146 Hamburg (Germany); Bensch, W., E-mail: wbensch@ac.uni-kiel.de [Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet Kiel, Max-Eyth-Str. 2, D-24118 Kiel (Germany)

2012-11-15T23:59:59.000Z

300

Processing and characterization of nanocrystalline molybdenum disilicide (MoSi{sub 2}) consolidated by hot isostatic pressing (HIP)  

SciTech Connect

This work studied the effect nanocrystalline processing may have on mechanical properties of MoSi{sub 2} and the ease with which MoSi{sub 2} powder can be processed into a bulk shape. (MoSi{sub 2} presently is limited by poor strength above 1000 C and brittleness below DBTT.) This work studied cold and hot isostatic pressing (CIP, HIP). The attrited, CIPed, and HIPed samples were characterized by chemical analysis, XRD, SEM, microhardness, optical microscopy, and quantitative metallography (porosity, density). Fracture toughness of the nanocrystalline MoSi{sub 2} was found to be a factor of two higher than conventional MoSi{sub 2} and the hardness of 1500 C-HIPed compacts were higher, as well. Modulus test showed the calculated elastic constants to be higher than the original Cerac material.

Haji-Mahmood, M.S.

1995-02-10T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

High blue-near ultraviolet photodiode response of vertically stacked graphene-MoS{sub 2}-metal heterostructures  

SciTech Connect

We present a study on the photodiode response of vertically stacked graphene/MoS{sub 2}/metal heterostructures in which MoS{sub 2} layers are doped with various plasma species. In comparison with undoped heterostructures, such doped ones exhibit significantly improved quantum efficiencies in both photovoltaic and photoconductive modes. This indicates that plasma-doping-induced built-in potentials play an important role in photocurrent generation. As compared to indium-tin-oxide/ MoS{sub 2}/metal structures, the presented graphene/MoS{sub 2}/metal heterostructures exhibit greatly enhanced quantum efficiencies in the blue-near ultraviolet region, which is attributed to the low density of recombination centers at graphene/MoS{sub 2} heterojunctions. This work advances the knowledge for making photo-response devices based on layered materials.

Wi, Sungjin; Chen, Mikai; Nam, Hongsuk; Liu, Amy C.; Meyhofer, Edgar; Liang, Xiaogan, E-mail: xiaoganl@umich.edu [Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States)

2014-06-09T23:59:59.000Z

302

Desulfurization of saturated C3S molecules on Mo(110): the effect of ring strain  

SciTech Connect

The reactions of trimethylene sulfide (c-C3H6S) and 1-propanethiol (C3H7SH) have been investigated on Mo(110) under ultrahigh vacuum using temperature-programmed reaction spectroscopy and Auger electron spectroscopy. Deuterium preadsorption experiments were conducted in conjunction with temperature-programmed reaction spectroscopy to deduce some mechanistic details of the reactions. Desulfurization reactions of both molecules to produce propane and propene were observed in the temperature range of 300-350 K, with propane production preceding propene production. In addition, trimethylene sulfide decomposed to form cyclopropane at 190 K. Both trimethylene sulfide and 1-propanethiol reacted on Mo(110) to produce gaseous dihydrogen in two peaks at approximately 350 and 540 K, as well as surface carbon and sulfur. Small amounts of reversibly adsorbed 1-propanethiol desorbed from Mo(110) between 175 and 200 K. Auger electron spectroscopy measurements suggest that approximately 50% of chemisorbed trimethylene sulfide decomposed to form hydrocarbons, while 70% of irreversibly chemisorbed 1-propanethiol decomposed to form hydrocarbons. The decomposition of trimethylene sulfide to cyclopropane is postulated to occur by one of three pathways. One of these pathways is entirely intramolecular, and the other two involve metallacycle transition states or intermediates. Trimethylene sulfide and 1-propanethiol are proposed to form propane and propene by way of a surface propyl thiolate intermediate, in a fashion similar to the reactions of tetrahydrothiophene and 1-butanethiol on Mo(110). The possible contributions of ring strain to the energetics and selectivity of the desulfurization reactions are discussed.

Roberts, J.T.; Friend, C.M.

1987-06-24T23:59:59.000Z

303

Hole Selective MoOx Contact for Silicon Solar Cells Corsin Battaglia,,,  

E-Print Network (OSTI)

Hole Selective MoOx Contact for Silicon Solar Cells Corsin Battaglia,,, Xingtian Yin,,,§, Maxwell, University of California, Berkeley, California 94720, United States Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States § Electronic Materials Research

Javey, Ali

304

MoS2/Graphene Composite Paper for Sodium-Ion Battery Electrodes  

Science Journals Connector (OSTI)

We study the synthesis and electrochemical and mechanical performance of layered free-standing papers composed of acid-exfoliated few-layer molybdenum disulfide (MoS2) and reduced graphene oxide (rGO) flakes for use as a self-standing flexible electrode ...

Lamuel David; Romil Bhandavat; Gurpreet Singh

2014-01-21T23:59:59.000Z

305

MoSeS: Modelling and Simulation for e-Social Science  

Science Journals Connector (OSTI)

...Crossing boundaries: computational science, e-Science and global e-Infrastructure...4054/DemRes.2004.10.7 . Office for National Statistics 2007 Sub-national...and Simulation for e-Social Science. | MoSeS (Modelling and Simulation...

2009-01-01T23:59:59.000Z

306

Hans-Heinrich Mo bius On the history of solid electrolyte fuel cells  

E-Print Network (OSTI)

technologically orientated development of SO- FCs proceeds today. Key words Solid oxide fuel cells á SolidREVIEW Hans-Heinrich Mo? bius On the history of solid electrolyte fuel cells Received: 4 February lamps 1897) is described. The development of the fundamentals of solid electrolyte fuel cells started

Gleixner, Stacy

307

MoIAC Pre-Audit Form Ways to submit this form  

E-Print Network (OSTI)

of fuels used (e.g. natural gas, propane, fuel oil, other): Volume of fuel used: Cost of fuel: Are fossil: Dr. Bin Wu 2. Print and return this form by mail to: Dr. Bin Wu University of Missouri, University of Missouri-Columbia, MO 65211 3. Return to: Please fill out the following blanks: Company Name

Noble, James S.

308

Standards as InterdependentArtifacts: the Case of the Internet Mo-Han Hsieh  

E-Print Network (OSTI)

Standards as InterdependentArtifacts: the Case of the Internet by Mo-Han Hsieh B.S. Civil Systems Chair, Engineer ystems Division Education Committee #12;1 #12;Standards as Interdependent in Engineering Systems ABSTRACT This thesis has explored a new idea: viewing standards as interdependent

de Weck, Olivier L.

309

Synthesis Gas Conversion to Aliphatic Alcohols: Study of MoS2 catalytic systems  

E-Print Network (OSTI)

by sulfidation of ammonium thiomolybate and acetate salts of co-promoters. Several catalyst formulations were prepared by calcination, followed by doping with alkali promoters. Solid state modifications were made in some cases to dilute the active MoS2 material...

Baksh, Faisal

2010-04-19T23:59:59.000Z

310

Analysis of Molecular Recognition Features (MoRFs) Amrita Mohan1  

E-Print Network (OSTI)

proteomic studies in the last decade revealed that many proteins are either completely disordered or possess­70 residues), loosely structured protein regions within longer, largely disordered sequences that were in MoRF regions prior to the actual binding event. The contribution of intrinsic protein disorder

Radivojac, Predrag

311

M&O Contract 2008-2013, Alliance for Sustainable Energy, LLC  

Office of Energy Efficiency and Renewable Energy (EERE)

Contract No. DE-AC36-08GO28308 M&O Contract 2008-2013, between the Alliance for Sustainable Energy, LLC and the U.S. Department Of Energy. Part I, Section B, Supplies and Services and Price/Costs.

312

HO. F, R~V. MO. 'ATM-l002j A  

E-Print Network (OSTI)

-arm· and thermal battery timer operation if the LRV were exposed to a shade environment for an extended lengthI/ HO. F, R~V. MO. 'ATM-l002j A ' LSPE EXPLOSIVE PACKAGE STOWAGE AND DEPLOYMENT THERMAL CONSTRAINTS a:PA:G:I~=l==~OF __l___ ... -- LSPE EXPLOSIVE PACKAGE STOWAGE AND DEPLOYMENT THERMAL CONSTRAINTS

Rathbun, Julie A.

313

Rejection of randomly coinciding events in ZnMoO$_4$ scintillating bolometers  

E-Print Network (OSTI)

Random coincidence of events (particularly from two neutrino double beta decay) could be one of the main sources of background in the search for neutrinoless double beta decay with cryogenic bolometers due to their poor time resolution. Pulse-shape discrimination by using front edge analysis, mean-time and $\\chi^2$ methods was applied to discriminate randomly coinciding events in ZnMoO$_4$ cryogenic scintillating bolometers. These events can be effectively rejected at the level of 99% by the analysis of the heat signals with rise-time of about 14 ms and signal-to-noise ratio of 900, and at the level of 92% by the analysis of the light signals with rise-time of about 3 ms and signal-to-noise ratio of 30, under the requirement to detect 95% of single events. These rejection efficiencies are compatible with extremely low background levels in the region of interest of neutrinoless double beta decay of $^{100}$Mo for enriched ZnMoO$_4$ detectors, of the order of $10^{-4}$ counts/(y keV kg). Pulse-shape parameters have been chosen on the basis of the performance of a real massive ZnMoO$_4$ scintillating bolometer. Importance of the signal-to-noise ratio, correct finding of the signal start and choice of an appropriate sampling frequency are discussed.

D. M. Chernyak; F. A. Danevich; A. Giuliani; M. Mancuso; C. Nones; E. Olivieri; M. Tenconi; V. I. Tretyak

2014-04-04T23:59:59.000Z

314

12MO-2008-03 Gold Nanoparticle Stabilized in Biocompatible Aqueous Media  

E-Print Network (OSTI)

12MO-2008-03 Gold Nanoparticle Stabilized in Biocompatible Aqueous Media The invention provides a method of synthesizing nanoparticles using environmentally benign reducing agents, non-toxic materials main steps in the preparation of metal nanoparticles include using an environmentally benign reducing

Mohanty, Saraju P.

315

BBA Electives: M&O Comparison Compiled 11/11/09  

E-Print Network (OSTI)

1 BBA Electives: M&O Comparison Compiled 11/11/09 University of Michigan ­ Ross School Management to Business Management Management Game Information Resource Management #12;2 Cornell University Leading Teams of North Carolina Chapel Hill ­ Kennan-Flagler Groups and Teams in Organizations Organizational

Michigan, University of

316

Production of Mixed Alcohols from Bio-syngas over Mo-based Catalyst  

Science Journals Connector (OSTI)

A series of Mo-based catalysts prepared by sol-gel method using citric acid as complexant were successfully applied in the high efficient production of mixed alcohols from bio-syngas derived from the biomass gasification. The Cu1Co1Fe1Mo1Zn0.5? 6%K catalyst exhibited a higher activity on the space-time yield of mixed alcohols compared with the other Mo-based catalysts. The carbon conversion significantly increases with rising temperature below 340 C but the alcohol selectivity has an opposite trend. The maximum mixed alcohols yield derived from biomass gasification is 494.8 g/(kgcatalh) with the C2+ (C2C6 higher alcohols) alcohols of 80.4% under the tested conditions. The alcohol distributions are consistent with the Schulz-Flory plots except methanol. In the alcohols products the C2+ alcohols (higher alcohols) dominate with a weight ratio of 70%85%. The Mo-based catalysts have been characterized by X-ray diffraction and N2 adsorption/desorption. The clean bio-fules of mixed alcohols derived from bio-syngas with higher octane values could be used as transportation fuels or petrol additives.

Song-bai Qiu; Wei-wei Huang; Yong Xu; Lu Liu; Quan-xin Li

2011-01-01T23:59:59.000Z

317

Ultrahigh-pressure structural phase transitions in Cr, Mo, and W  

Science Journals Connector (OSTI)

On the basis of first-principles total-energy calculations, we predict the ultrahigh-pressure destabilization of the bcc structure in the group-VIB elements Cr, Mo, and W through a bcc?hcp phase transition at pressures of about 7.0, 4.2, and 12.5 Mbar, respectively. In Mo and W, a subsequent hcp?fcc transition is also predicted at about 6.2 and 14.4 Mbar, respectively. The overall driving mechanism for these transitions is a continuous sp?d transfer of electrons upon compression, although other factors play an important quantitative role, especially the hard-core-like interaction between the large cores of these elements, which disfavors the bcc structure and serves to lower the bcc?hcp transition pressures. While the actual predicted transition pressures are sensitive to the details of the calculations, the qualitative trends are not, and the bcc?hcp transition in Mo should be within reach of static diamond-anvil-cell experiments. In this regard, we have also calculated accurate 300-K isotherms for bcc Cr, Mo, and W valid up to the 56-Mbar pressure range.

John A. Moriarty

1992-02-01T23:59:59.000Z

318

The Physics Programme Of The MoEDAL Experiment At The LHC  

E-Print Network (OSTI)

The MoEDAL experiment at Point 8 of the LHC ring is the seventh and newest LHC experiment. It is dedicated to the search for highly ionizing particle avatars of physics beyond the Standard Model, extending significantly the discovery horizon of the LHC. A MoEDAL discovery would have revolutionary implications for our fundamental understanding of the Microcosm. MoEDAL is an unconventional and largely passive LHC detector comprised of the largest array of Nuclear Track Detector stacks ever deployed at an accelerator, surrounding the intersection region at Point 8 on the LHC ring. Another novel feature is the use of paramagnetic trapping volumes to capture both electrically and magnetically charged highly-ionizing particles predicted in new physics scenarios. It includes an array of TimePix pixel devices for monitoring highly-ionizing particle backgrounds. The main passive elements of the MoEDAL detector do not require a trigger system, electronic readout, or online computerized data acquisition. The aim of this...

Acharya, BKing's Coll. London; Bernabeu, J; Campbell, M; Cecchini, S; Chwastowski, J; De Montigny, M; Derendarz, D; De Roeck, A; Ellis, J R; Fairbairn, M; Felea, D; Frank, M; Frekers, D; Garcia, C; Giacomelli, G; Giorgini, M; Hasegan, D; Hott, T; Jakubek, J; Katre, A; Kim, D-W; King, M G L; Kinoshita, K; Lacarrere, D; Lee, S C; Leroy, C; Margiotta, A; Mauri, N; Mavromatos, N E; Mermod, P; Mitsou, V A; Orava, R; Pasqualini, L; Patrizii, L; Pavalas, G E; Pinfold, J L; Platkevic, M; Popa, V; Pozzato, M; Pospisil, S; Rajantie, A; Sahnoun, Z; Sakellariadou, M; Sarkar, S; Semenoff, G; Sirri, G; Sliwa, K; Soluk, R; Spurio, M; Srivastava, Y N; Staszewski, R; Swain, J; Tenti, M; Togo, V; Trzebinski, M; Tuszynski, J A; Vento, V; Vives, O; Vykydal, Z; Widom, A; Yoon, J H

2014-01-01T23:59:59.000Z

319

Pennsylvanian Spiriferacea and Spiriferinacea of Kansas  

E-Print Network (OSTI)

unit is thin, the group as a whole is a fairly compact sequence, which stands jCool Creek Ls.Holt Shale Du Bois Limestone Turner Creek Shale Sheldon Lin-fester. 2.: tones Point Shalt lowa Palen Shale Co Li lone Hanford Limestone / Calhoun Shale Thin... unit is thin, the group as a whole is a fairly compact sequence, which stands jCool Creek Ls.Holt Shale Du Bois Limestone Turner Creek Shale Sheldon Lin-fester. 2.: tones Point Shalt lowa Palen Shale Co Li lone Hanford Limestone / Calhoun Shale Thin...

Spencer, R. S.

1967-01-27T23:59:59.000Z

320

Effect of MoS{sub 2} on hydrogenation storage properties of LiBH{sub 4}  

SciTech Connect

The hydrogen storage properties of LiBH{sub 4} ball milled with 20 wt% MoS{sub 2} have been investigated. It shows that the LiBH{sub 4} doped with MoS{sub 2} exhibits favorable hydrogenation and dehydrogenation properties in terms of decomposition temperature and hydriding/dehydriding reversibility. The sample with MoS{sub 2} starts to release hydrogen at 230 C and has a decrease of 80 C in contrast with pristine LiBH{sub 4}. Furthermore, for the second cycle, the LiBH{sub 4} with MoS{sub 2} maintains a reversible hydrogen storage capacity of about 8.0 wt% which is almost identical with the first cycle under 5 MPa at 550 C. Analyzed by the XRD and the FTIR results, LiBH{sub 4} can be regenerated after re-hydrogenation under a relatively mild condition by adding MoS{sub 2}. The improvement of the hydrogenation and dehydrogenation properties mainly results from the formation of Li{sub 2}S and MoB{sub 2} during ball milling. -- Graphical abstract: Hydrogen absorption curves of LiBH{sub 4} doped with MoS{sub 2} for five cycles at 400 C. Highlights: The hydrogen absorption capacity is nearly the same for 5 cycles at 400 C. The sample with MoS{sub 2} starts to release hydrogen at 230 C. The coexistence of MoB{sub 2} and Li{sub 2}S catalyzes the decomposition of LiBH{sub 4}.

Liang, Dan [College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China); Han, Shumin, E-mail: hanshm@ysu.edu.cn [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China); Wang, Jiasheng [College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China); Zhang, Wei [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China); Zhao, Xin; Zhao, Ziyang [College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China)

2014-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

A synchroton single crystal X-ray structure determination of (NH4)3Mo4P3O16: A microporous molybdenum phosphate with Mo4O6+4 cubes  

Science Journals Connector (OSTI)

Reaction of MoO3, Mo, (NH4)2HPO4, H3PO4, and H2O in a mole ratio of 1.4:1:3.6:6:120 at 360C for 16 hr gives a nearly quantitative yield of black cubes of (NH4)3Mo4P3O16 (1). The structure of (1) was solved from data collected on a 30 30 30 ?m3 crystal at the National Synchrotron Light Source at Brookhaven National Laboratory. The compound is cubic, space group P43m, with a = 7.736(2) , and was refined to residuals of R(Rw) = 0.035(0.049). Phosphate (1) is isotypic with Cs3Mo4P3O16 and is related to the iron arsenate mineral pharmacosiderite. Unlike the Cs+ compound, (1) can be rendered microporous by thermal removal of the NH+4 cations to give ammonia with the charge compensating proton remaining behind in the lattice. Water absorption isotherms show the reversible uptake of 5.6 wt% water, which corresponds to over 15 vol% void space in (1) after the NH3 removal. The framework consists of Mo4O6+4 cubes, with six Mo?Mo contacts of 2.570(4) , joined together together by (PO4)62 along ?100? to form a 3-D network composed of tetramers of triply edge-sharing Mo-centered octahedra and phosphate groups alternating along all ?100? directions. The windows and cavities in (1) are large enough that the NH+4 cations occupy several different positions in the unit cell.

H.E. King Jr.; Linda A. Mundi; Karl G. Strohmaier; Robert C. Haushalter

1991-01-01T23:59:59.000Z

322

File:USDA-CE-Production-GIFmaps-MO.pdf | Open Energy Information  

Open Energy Info (EERE)

MO.pdf MO.pdf Jump to: navigation, search File File history File usage Missouri Ethanol Plant Locations Size of this preview: 776 × 600 pixels. Full resolution ‎(1,650 × 1,275 pixels, file size: 377 KB, MIME type: application/pdf) Description Missouri Ethanol Plant Locations Sources United States Department of Agriculture Related Technologies Biomass, Biofuels, Ethanol Creation Date 2010-01-19 Extent State Countries United States UN Region Northern America States Missouri External links http://www.nass.usda.gov/Charts_and_Maps/Ethanol_Plants/ File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 16:16, 27 December 2010 Thumbnail for version as of 16:16, 27 December 2010 1,650 × 1,275 (377 KB) MapBot (Talk | contribs) Automated bot upload

323

Laser Welding and Post Weld Treatment of Modified 9Cr-1MoVNb Steel [Laser  

NLE Websites -- All DOE Office Websites (Extended Search)

Laser Welding of Metals > Laser Welding of Metals > Laser Welding and Post Weld Treatment of Modified 9Cr-1MoVNb Steel Capabilities Engineering Experimentation Reactor Safety Experimentation Aerosol Experiments System Components Laser Applications Overview Laser Oil & Gas Well Drilling Laser Heat Treatment Laser Welding of Metals On-line Monitoring Laser Beam Delivery Laser Glazing of Railroad Rails High Power Laser Beam Delivery Decontamination and Decommissioning Refractory Alloy Welding Robots Applications Other Facilities Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Laser Applications Laboratory Laser Welding of Metals Laser Welding and Post Weld Treatment of Modified 9Cr-1MoVNb Steel Zhiyue Xu Nuclear Engineering Division of Argonne National Laboratory

324

Silicon heterojunction solar cell with passivated hole selective MoO{sub x} contact  

SciTech Connect

We explore substoichiometric molybdenum trioxide (MoO{sub x}, x?MoO{sub x}, we observe a substantial gain in photocurrent of 1.9?mA/cm{sup 2} in the ultraviolet and visible part of the solar spectrum, when compared to a p-type amorphous silicon emitter of a traditional silicon heterojunction cell. Our results emphasize the strong potential for oxides as carrier selective heterojunction partners to inorganic semiconductors.

Battaglia, Corsin; Yin, Xingtian; Zheng, Maxwell; Javey, Ali, E-mail: ajavey@eecs.berkeley.edu [Electrical Engineering and Computer Sciences Department, University of California, Berkeley, California 94720 (United States); Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Martn de Nicols, Silvia; De Wolf, Stefaan; Ballif, Christophe [Photovoltaics and Thin Film Electronics Laboratory, Ecole Polytechnique Fdrale de Lausanne, 2000 Neuchtel (Switzerland)

2014-03-17T23:59:59.000Z

325

Improved performance of U-Mo dispersion fuel by Si addition in Al matrix.  

SciTech Connect

The purpose of this report is to collect in one publication and fit together work fragments presented in many conferences in the multi-year time span starting 2002 to the present dealing with the problem of large pore formation in U-Mo/Al dispersion fuel plates first observed in 2002. Hence, this report summarizes the excerpts from papers and reports on how we interpreted the relevant results from out-of-pile and in-pile tests and how this problem was dealt with. This report also provides a refined view to explain in detail and in a quantitative manner the underlying mechanism of the role of silicon in improving the irradiation performance of U-Mo/Al.

Kim, Y S; Hofman, G L [Nuclear Engineering Division

2011-06-01T23:59:59.000Z

326

Doping dependence of thermoelectric performance in Mo3Sb7: first principles calculations  

SciTech Connect

We study the effects of doping Mo3Sb7 with transition metals (Ni,Fe,Co,Ru) via first principles calculations, including electronic structure, lattice dynamics and Boltzmann transport. We find heavy-mass bands and large, rapidly varying density-of-states, generally favorable for high thermopower, near the band gap of this material. Transport calculations predict large Seebeck coefficients exceeding 300 $\\mu$V/K in a wide temperature range above 500 K (a range suitable for waste heat recovery), if the material can be doped into a semiconducting state. These thermopowers are much higher than those that have previously been experimentally observed; we find that performance exceeding current limits may be found at lower carrier concentration than achieved presently. We also discuss the selection of dopant and the potential thermoelectric performance of optimally doped Mo3Sb7.

Singh, David J [ORNL; Parker, David S [ORNL; Du, Mao-Hua [ORNL

2011-01-01T23:59:59.000Z

327

Two neutrino double ? decay of 100Mo to the 2+ excited state of 100Ru  

Science Journals Connector (OSTI)

The two neutrino double ? decay of 100Mo for 0+?2+ transition is studied in the projected Hartree-Fock-Bogoliubov framework. In our earlier work, the reliability of the intrinsic wave functions has been established for 100Mo and 100Ru by obtaining an overall agreement between the available experimental data and theoretically calculated results for yrast spectra, reduced transition probabilities B(E2:0+?2+), quadrupole moments Q(2+), gyromagnetic factors g(2+), and double Gamow-Teller matrix element for 0+?0+ transition. In the present work, the half-life for 0+?2+ transition T1/22?(0+?2+) has been calculated using the same set of intrinsic wave functions.

K. Chaturvedi, B. M. Dixit, P. K. Rath, and P. K. Raina

2003-06-27T23:59:59.000Z

328

Thermal conductivity and phonon linewidths of monolayer MoS{sub 2} from first principles  

SciTech Connect

Using ab initio calculations, we have investigated the phonon linewidths and the thermal conductivity (?) of monolayer MoS{sub 2}. ? for a typical sample size of 1??m is 83 W/m K at room temperature in the completely rough edge limit, suggesting ? is not a limiting factor for the electronic application of monolayer MoS{sub 2}. ? can be further increased by 30% in 10??m sized samples. Due to strong anharmonicity, isotope enhancement of room temperature ? is only 10% for 1??m sized samples. However, linewidths can be significantly reduced, for instance, for Raman active modes A{sub 1g} and E{sub 2g}{sup 1}, in isotopically pure samples.

Li, Wu, E-mail: wu.li.phys2011@gmail.com; Carrete, J.; Mingo, Natalio, E-mail: natalio.mingo@cea.fr [CEA-Grenoble, 17 Rue des Martyrs, Grenoble 38000 (France)] [CEA-Grenoble, 17 Rue des Martyrs, Grenoble 38000 (France)

2013-12-16T23:59:59.000Z

329

Experimental search for double-{beta} decay of {sup 100}Mo  

SciTech Connect

No evidence for the neutrinoless double-{beta} decay of {sup 100}Mo has been found in a search using a segmented Si(Li) detector with source foils enriched to 97{percent} {sup 100}Mo. From an exposure of 0.2664 mole years, and using Bayesian statistics to calculate confidence levels, we find a 68{percent} lower limit on the half-life for the J{sup p}=0{sup +}{r_arrow}0{sup +} transition of 0.22{times}10{sup 23} yr. The measured half-life of the two neutrino double-{beta} decay is 0.76{sub {minus}0.14}{sup +0.22}{times}10{sup 19} yr. {copyright} {ital 1997} {ital The American Physical Society}

Alston-Garnjost, M.; Dougherty, B.L.; Kenney, R.W.; Tripp, R.D. [Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)] [Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States); Krivicich, J.M.; Nicholson, H.W.; Sutton, C.S. [Mount Holyoke College, South Hadley, Massachusetts 01075 (United States)] [Mount Holyoke College, South Hadley, Massachusetts 01075 (United States); Dieterle, B.D.; Foltz, S.D.; Leavitt, C.P.; Reeder, R.A. [University of New Mexico, Albuquerque, New Mexico 87131 (United States)] [University of New Mexico, Albuquerque, New Mexico 87131 (United States); Baker, J.D.; Caffrey, A.J. [Idaho National Engineering Laboratory, Idaho Falls, Idaho 83415 (United States)] [Idaho National Engineering Laboratory, Idaho Falls, Idaho 83415 (United States)

1997-01-01T23:59:59.000Z

330

Spectroscopy of Double-Beta and Inverse-Beta Decays from 100Mo for Neutrinos  

E-Print Network (OSTI)

Spectroscopic studies of two beta-rays from 100Mo are shown to be of potential interest for investigating both the Majorana neutrino mass by neutrinoless double beta-decay and low energy solar neutrino's by inverse beta-decay. With a multi-ton 100Mo detector, coincidence studies of correlated beta-beta from neutrinoless double beta-decay, together with the large Q value, permit identification of the neutrino-mass term with a sensitivity of ~ 0.03 eV. Correlation studies of the inverse beta and the successive beta-decay of 100Tc, together with the large capture rates for low energy solar neutrino's, make it possible to detect in realtime individual low energy solar neutrino in the same detector.

H. Ejiri; J. Engel; R. Hazama; P. Krastev; N. Kudomi; R. G. H. Robertson

1999-11-20T23:59:59.000Z

331

First spectroscopic investigation of the 4d transition metal monocarbide MoC  

E-Print Network (OSTI)

C simply fills the 2 orbital. Next in the 4d metal-carbide series is another well studied mol- ecule, RhFirst spectroscopic investigation of the 4d transition metal monocarbide MoC Dale J. Brugh transition metal monocarbides, of which only FeC,1­3 CoC,4,5 and NiC Ref. 6 have been studied in detail

Morse, Michael D.

332

Process-dependent electronic states at Mo/hafnium oxide/Si interfaces  

SciTech Connect

The authors have used low energy electron-excited nanoscale depth-resolved cathodoluminescence spectroscopy (DRCLS) to probe the bulk and interface defect states of ultrathin Mo/HfO{sub 2}/Si with eight different process sequences. After atomic layer deposition of 4 nm HfO{sub 2} on Si and an O{sub 2} post-treatment, they deposited 10 nm Mo using either plasma vapor or electron beam deposition, with or without a subsequent 1000 deg. C N{sub 2} anneal and with or without a forming gas anneal. DRCLS revealed pronounced gap state emissions within the ultrathin films and their interfaces with Mo and Si. There are multiple deep level emissions below the {approx}5.9 eV near band edge, including peak emissions at 3.4, 3.5, and 3.9-4.3 eV that can be associated with HfO{sub 2} oxygen vacancies in different charge states predicted theoretically. In addition, states at 2-2.6 eV that resemble known SiO{sub 2}-related nonbonding oxygen hole centers and E{sup '} (positively charged O vacancy) native defects increase with depth within the 4 nm HfO{sub 2} film, suggesting the formation of a Hf silicate at the HfO{sub 2}/Si interface. No metal-specific interface states at the HfO{sub 2}/Mo interface are evident. Furthermore, different process steps produce large changes in these states and for at least one sequence, a dramatic decrease in both types of defects. The differences between process sequences can be understood in terms of known reactions at HfO{sub 2}-Si interfaces.

Walsh, S.; Fang, L.; Schaeffer, J. K.; Brillson, L. J. [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States); Technology Solutions Organization, Freescale Semiconductor, Inc., Austin, Texas 78721 (United States); Department of Electrical and Computer Engineering, Department of Physics and Center for Materials Research, Ohio State University, Columbus, Ohio 43210 (United States)

2007-07-15T23:59:59.000Z

333

Production and Characterization of Atomized U-Mo Powder by the Rotating Electrode Process  

SciTech Connect

In order to produce feedstock fuel powder for irradiation testing, the Idaho National Laboratory has produced a rotating electrode type atomizer to fabricate uranium-molybdenum alloy fuel. Operating with the appropriate parameters, this laboratory-scale atomizer produces fuel in the desired size range for the RERTR dispersion experiments. Analysis of the powder shows a homogenous, rapidly solidified microstructure with fine equiaxed grains. This powder has been used to produce irradiation experiments to further test adjusted matrix U-Mo dispersion fuel.

C.R. Clark; B.R. Muntifering; J.F. Jue

2007-09-01T23:59:59.000Z

334

Excitons in a mirror: Formation of "optical bilayers" using MoS2 monolayers on gold substrates  

E-Print Network (OSTI)

-sandwiched molybdenum atoms by micromechani- cal cleavage, similar to the fabrication of graphene.3 Unlike graphene, Mo applications ranging from logic circuit designs,22�25 photodetectors,26,27 batteries,28,29 and catalytic

Steiner, Ullrich

335

Performance of ZnMoO4 crystal as cryogenic scintillating bolometer to search for double beta decay of molybdenum  

E-Print Network (OSTI)

Zinc molybdate (ZnMoO4) single crystals were grown for the first time by the Czochralski method and their luminescence was measured under X ray excitation in the temperature range 85-400 K. Properties of ZnMoO4 crystal as cryogenic low temperature scintillator were checked for the first time. Radioactive contamination of the ZnMoO4 crystal was estimated as <0.3 mBq/kg (228-Th) and 8 mBq/kg (226-Ra). Thanks to the simultaneous measurement of the scintillation light and the phonon signal, the alpha particles can be discriminated from the gamma/beta interactions, making this compound extremely promising for the search of neutrinoless Double Beta Decay of 100-Mo. We also report on the ability to discriminate the alpha-induced background without the light measurement, thanks to a different shape of the thermal signal that characterizes gamma/beta and alpha particle interactions.

L. Gironi; C. Arnaboldi; J. W. Beeman; O. Cremonesi; F. A. Danevich; V. Ya. Degoda; L. I. Ivleva; L. L. Nagornaya; M. Pavan; G. Pessina; S. Pirro; V. I. Tretyak; I. A. Tupitsyna

2010-10-01T23:59:59.000Z

336

CO and NO Adsorption and Dissociation at the -Mo2C(0001) Surface: A Density Functional Theory Study  

E-Print Network (OSTI)

. Introduction Transition-metal carbides have attracted great interest because of their exciting physical as well as thermal conductivity.3 In addition, -molybdenum carbide ( -Mo2C)-based catalysts exhibit

337

U-Mo Foil/Cladding Interactions in Friction Stir Welded Monolithic RERTR Fuel Plates  

SciTech Connect

Interaction between U-Mo fuel and Al has proven to dramatically impact the overall irradiation performance of RERTR dispersion fuels. It is of interest to better understand how similar interactions may affect the performance of monolithic fuel plates, where a uranium alloy fuel is sandwiched between aluminum alloy cladding. The monolithic fuel plate removes the fuel matrix entirely, which reduces the total surface area of the fuel that is available to react with the aluminum and moves the interface between the fuel and cladding to a colder region of the fuel plate. One of the major fabrication techniques for producing monolithic fuel plates is friction stir welding. This paper will discuss the interactions that can occur between the U-Mo foil and 6061 Al cladding when applying this fabrication technique. It has been determined that the time at high temperatures should be limited as much as is possible during fabrication or any post-fabrication treatment to reduce as much as possible the interactions between the foil and cladding. Without careful control of the fabrication process, significant interaction between the U-Mo foil and Al alloy cladding can result. The reaction layers produced from such interactions can exhibit notably different morphologies vis--vis those typically observed for dispersion fuels.

D.D. Keiser; J.F. Jue; C.R. Clark

2006-10-01T23:59:59.000Z

338

ZrO sub 2 reinforced-MoSi sub 2 matrix composites  

SciTech Connect

ZrO{sub 2} particle-MoSi{sub 2} matrix composites were fabricated by wet processing/hot pressing, using high quality unstabilized, partially stabilized, and fully stabilized ZrO{sub 2} powders. Composite room temperature indentation fracture toughness increased with increasing volume fraction of ZrO{sub 2} reinforcement. Unstabilized ZrO{sub 2} produced the highest composite fracture toughness, 7.8 MPa m{sup {1/2}} as compared to 2.6 MPa m{sup {1/2}} for pure MoSi{sub 2}. Unstabilized ZrO{sub 2} composites exhibited matrix microcracking, and the spontaneous tetragonal-to-monoclinic ZrO{sub 2} phase transformation induced significant plastic deformation in the MoSi{sub 2} matrix. Partially stabilized ZrO{sub 2} produced a lesser extent of composite fracture toughening, possibly as a result of an inhomogeneous ZrO{sub 2} particle distribution and presence of a glassy phase. 13 refs., 6 figs., 1 tab.

Petrovic, J.J.; Honnell, R.E.; Mitchell, T.E. (Los Alamos National Lab., NM (USA)); Wade, R.K. (Arizona Materials Lab., Tucson, AZ (USA)); McClellan, K.J. (Case Western Reserve Univ., Cleveland, OH (USA). Dept. of Materials Science and Engineering)

1991-01-01T23:59:59.000Z

339

Rejection of randomly coinciding events in ZnMoO$_4$ scintillating bolometers  

E-Print Network (OSTI)

Random coincidence of events (particularly from two neutrino double beta decay) could be one of the main sources of background in the search for neutrinoless double beta decay with cryogenic bolometers due to their poor time resolution. Pulse-shape discrimination by using front edge analysis, mean-time and $\\chi^2$ methods was applied to discriminate randomly coinciding events in ZnMoO$_4$ cryogenic scintillating bolometers. These events can be effectively rejected at the level of 99% by the analysis of the heat signals with rise-time of about 14 ms and signal-to-noise ratio of 900, and at the level of 92% by the analysis of the light signals with rise-time of about 3 ms and signal-to-noise ratio of 30, under the requirement to detect 95% of single events. These rejection efficiencies are compatible with extremely low background levels in the region of interest of neutrinoless double beta decay of $^{100}$Mo for enriched ZnMoO$_4$ detectors, of the order of $10^{-4}$ counts/(y keV kg). Pulse-shape parameters ...

Chernyak, D M; Giuliani, A; Mancuso, M; Nones, C; Olivieri, E; Tenconi, M; Tretyak, V I

2014-01-01T23:59:59.000Z

340

Superconducting and structural properties of {delta}-MoC{sub 0.681} cubic molybdenum carbide phase  

SciTech Connect

The superconducting and lattice properties of {delta}-MoC{sub 0.681} were studied by electromagnetic measurements, synchrotron X-ray diffraction, neutron diffraction, and electron diffraction. The superconducting properties (T{sub c}=12 K) of {delta}-MoC{sub 0.681} were well characterized by a weak coupling model. The carbon vacancies present in the host cubic structure were found to be robust, although the material was synthesized from stoichiometric carbon and Mo powder under a high-pressure of 6 GPa. A thermodynamically-stable structure with ordered vacancies did not account for the robust features of {delta}-MoC{sub 0.681} since the vacancies are unlikely to be ordered in long range in the host structure. A model based on inherent phonon instability theoretically predicted for a stoichiometric MoC phase might be responsible for the robust features of {delta}-MoC{sub 0.681}. - Graphical Abstract: The cubic molybdenum carbide shows an excellent superconductivity with robust carbon vacancies. Inherent phonon instability theoretically predicted for a stoichiometric MoC phase might be responsible for the vacancies rather than a thermodynamically-stable structure with vacancies ordering. Highlights: Black-Right-Pointing-Pointer The 12 K superconductivity is well characterized by a weakly coupling model. Black-Right-Pointing-Pointer Carbon vacancies are robust and disordered in the cubic host structure. Black-Right-Pointing-Pointer Inherent phonon instability might be responsible for the robust carbon vacancies in {delta}-MoC{sub 0.681}.

Sathish, C.I. [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan) [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Guo, Yanfeng, E-mail: GUO.Yanfeng@nims.go.jp [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)] [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Wang, Xia [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan) [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Tsujimoto, Yoshihiro [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)] [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Li, Jun [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan) [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Zhang, Shoubao [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)] [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Matsushita, Yoshitaka [Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo-cho, Hyogo 679-5148 (Japan)] [Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo-cho, Hyogo 679-5148 (Japan); Shi, Youguo; Tian, Huanfang; Yang, Huaixin; Li, Jianqi [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)] [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Yamaura, Kazunari, E-mail: YAMAURA.Kazunari@nims.go.jp [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan) [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

2012-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Thermodynamics of the solid solution of hydrogen in ?-titanium alloys: ?-TiMo and ?-TiRe  

Science Journals Connector (OSTI)

The solid solution of hydrogen has been investigated in a series of random ?-TiMo alloys ranging from 065 atom % Mo via determination of pressure-composition-temperature relationships; additionally, one (?-TiRe alloy (Ti37 atom % Re) was investigated. The thermodynamic parameters of hydrogen solution were generated from the p-c-T data. The relative partial molar enthalpy at infinite dilution, ?H?Ho, exhibited by ?-TiMo alloys were adjusted to conditions of fixed volume, that of pure ?-Ti. It was found that variations in the resulting ?E?Ho correlated roughly with variations in the electron density of states at the Fermi level. The relative partial molar entropy at infinite dilution was found to vary linearly with Mo content and it is suggested that this trend reflects a blocking of potentially available interstitial sites to hydrogen occupation by Mo atoms at small hydrogen contents. Examination of the excess free energy vs hydrogen content relationships indicates that effects resulting from accommodation of hydrogen electrons by the metal conduction band are significant even at small hydrogen contents in the TiMo alloys; thus, explicit determination of the H-H interaction is not possible in the alloys. By contrast, electronic effects in pure ?-Ti are negligible at small HM and under fixed volume conditions, the H-H interactions in ?-Ti are attractive.

J.F. Lynch; J. Tanaka

1981-01-01T23:59:59.000Z

342

Anomalies in Ultra-High-Field Magnetic Superconductors (Eu1-xSnx)Mo6S8  

Science Journals Connector (OSTI)

Resistive behavior of three series of Chevrel phase, (Eu1-xSnx)Mo6S7, (Eu1-xSnx)Mo6S6.75 and (Eu1-xSnx)0.9Mo6S6.75, is studied in magnetic fields up to 90 kOe at temperatures down to 50 mK. Compounds with x>0.4 are usual ultra-high-field superconductors, while (Eu0.9Sn0.1)0.9Mo6S6.75 is a simple magnetic superconductor. Resistive behavior of the compounds between the above mentioned two sides is complicated, varying with the composition. For example, in (Eu0.8Sn0.2)Mo6S7 the resistance at high fields keeps roughly constant and the temperature dependence of Hc2 defined as a half of the resistance in the normal state is quite different with that defined at the appearance of the resistance. In (Eu0.85Sn0.15)Mo6S7 the superconductivity (=zero resistance) seems to reappear at high fields and at low temperatures.

Masahiro Isino; Norio Kobayashi; Yoshio Muto

1980-01-01T23:59:59.000Z

343

Controlled growth of vertically aligned MoO{sub 3} nanoflakes by plasma assisted paste sublimation process  

SciTech Connect

In this work, we have successfully developed plasma assisted paste sublimation route to deposit vertically aligned MoO{sub 3} nanoflakes (NFs) on nickel coated glass substrate in oxygen plasma ambience with the assistant of Ni thin layer as a catalyst. In our case, sublimation source (Mo strip surface) is resistively heated by flowing current across it. The structural, morphological, and optical properties of NFs have been investigated systematically using x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) with selected area electron diffraction (SAED), High resolution transmission electron microscopy (HRTEM), micro-Raman spectroscopy, and Photoluminescence (PL) spectroscopy. Studies reveal that the presence of oxygen plasma and the nickel thin layer are very essential for the growth of vertically aligned NFs. The observed results divulge that ?-MoO{sub 3} NFs are deposited uniformly on large scale with very high aspect (height/thickness) ratio more than 30 and well aligned along [0 k 0] crystallographic direction where k is even (2, 4, 6). Raman spectrum shows a significant size effect on the vibrational property of MoO{sub 3} nanoflakes. The PL spectrum of MoO{sub 3} NFs was recorded at room temperature and four prominent peaks at 365 nm, 395 nm, 452 nm, and 465 nm corresponding to UV-visible region were observed. In this paper, a three step growth strategy for the formation of MoO{sub 3} NFs has been proposed in detail.

Sharma, Rabindar K.; Reddy, G. B. [Thin Film Laboratory, Physics Department, Indian Institute of Technology Delhi, New Delhi 110016 (India)] [Thin Film Laboratory, Physics Department, Indian Institute of Technology Delhi, New Delhi 110016 (India)

2013-11-14T23:59:59.000Z

344

A practical grinding-assisted dry synthesis of nanocrystalline NiMoO{sub 4} polymorphs for oxidative dehydrogenation of propane  

SciTech Connect

A practical two-stage reactive grinding-assisted pathway waste-free and cost-effective for the synthesis of NiMoO{sub 4} has been successfully developed. It was demonstrated that proper design in synthetic strategy for grinding plays a crucial role in determining the ultimate polymorph of NiMoO{sub 4}. Specifically, direct grinding (DG) of MoO{sub 3} and NiO rendered {alpha}-NiMoO{sub 4} after annealing, whereas sequential grinding (SG) of the two independently pre-ground oxides followed by annealing generated {beta}-NiMoO{sub 4} solid solution. Characterizations in terms of Raman and X-ray diffraction suggest the creation of {beta}-NiMoO{sub 4} precursor in the latter alternative is the key aspect for the formation of {beta}-NiMoO{sub 4}. The DG-derived {alpha}-NiMoO{sub 4} tested by oxidative dehydrogenation of propane exhibited superior activity in contrast to its analog synthesized via conventional coprecipitation. It is suggested that the favorable chemical composition facilely obtained via grinding in contrast to that by coprecipitation was essential for achieving a more selective production of propylene. - Graphical Abstract: Grinding-assisted synthesis of NiMoO{sub 4} offers higher and more reproducible activities in contrast to coprecipitation for oxidative dehydrogenation of propane, and both {alpha}- and {beta}-NiMoO{sub 4} can be synthesized. Highlights: Black-Right-Pointing-Pointer NiMoO{sub 4} was prepared through grinding-assisted pathway. Black-Right-Pointing-Pointer Direct/sequential grinding rendered {alpha}-, {beta}-NiMoO{sub 4}, respectively. Black-Right-Pointing-Pointer Grinding-derived {alpha}-NiMoO{sub 4} showed high and reproducible activity for oxidative dehydrogenation of propane.

Chen Miao, E-mail: chenmiao@sinochem.com [Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 (China); Zhejiang Chemical Industry Research Institute, Hangzhou 310023 (China); Wu Jialing; Liu Yongmei [Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 (China); Cao Yong, E-mail: yongcao@fudan.edu.cn [Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 (China); Guo Li [Zhejiang Chemical Industry Research Institute, Hangzhou 310023 (China); He Heyong; Fan Kangnian [Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 (China)

2011-12-15T23:59:59.000Z

345

MO: ZL  

Office of Legacy Management (LM)

Tonawanda, New York," May 1978 (DOEEV-00056). 2. "Radiological Survey of the Ashland Oil Co. (Former Waist Property), Tonewanda, Kew York," May 1978 (DOEEV-00054). 3....

346

Beta-decay properties of Zr and Mo neutron-rich isotopes  

E-Print Network (OSTI)

Gamow-Teller strength distributions, beta-decay half-lives, and beta-delayed neutron emission are investigated in neutron-rich Zr and Mo isotopes within a deformed quasiparticle random-phase approximation. The approach is based on a self-consistent Skyrme Hartree-Fock mean field with pairing correlations and residual separable particle-hole and particle-particle forces. Comparison with recent measurements of half-lives stresses the important role that nuclear deformation plays in the description of beta-decay properties in this mass region.

P. Sarriguren; J. Pereira

2010-06-08T23:59:59.000Z

347

Electronic structure of CdMoO{sub 4} using Compton scattering technique  

SciTech Connect

The first ever Compton profile of polycrystalline CdMoO{sub 4} has been measured using {sup 137}Cs spectrometer. The results are compared with theoretical Compton profiles deduced from free atom and linear combination of atomic orbitals (LCAO) methods. We have also computed the energy bands using density functional theory (DFT) within LCAO. The computed bands confirm the semiconducting behaviour of this compound. It is seen that the DFT theoretical profile (with local density approximation) gives a better agreement with the experimental Compton data than free atom Compton profile.

Sharma, Khushboo, E-mail: khushboo.phy@gmail.com; Ahuja, B. L. [Department of Physics, University College of Science, M.L. Sukhadia University, Udaipur-313001 (India); Sahariya, Jagrati [Department of Physics, Manipal University, Jaipur-303007 (India)

2014-04-24T23:59:59.000Z

348

The growth and characterization of LiGd?(Mo0?)? single crystals  

E-Print Network (OSTI)

and was used along with a thermo- electric heater/cooler. The DIP packaging technique also made the samples much more rugged and easier to handle (see figure 11). Figure 11 Holder III a) ceramic package, b) bonding pad, c) conductive high temperature... 1981 Major Subject: Electrical Engineering THE GROWTH AND CHARACTERIZATION OF LiGd (MoO ) SINGLE CRYSTALS A Thesis JAMES ALLYN REIMUND Approved as to style and content by: (R. K. Pandey, Cha~m . o Committee) )() (R. L. Geiger, Member) (T. W...

Reimund, James Allyn

1981-01-01T23:59:59.000Z

349

SiH and SiC Bond Cleavage Reactions of Silane and Phenylsilanes with Mo(PMe3)6: Silyl, Hypervalent Silyl, Silane, and Disilane Complexes  

Science Journals Connector (OSTI)

SiH and SiC Bond Cleavage Reactions of Silane and Phenylsilanes with Mo(PMe3)6: Silyl, Hypervalent Silyl, Silane, and Disilane Complexes ... Mo(PMe3)6 cleaves the SiH bonds of SiH4, PhSiH3, and Ph2SiH2 to afford a variety of novel silyl, hypervalent silyl, silane, and disilane complexes, as respectively illustrated by Mo(PMe3)4(SiH3)2H2, Mo(PMe3)4(?2-H2-H2SiPh2H)H, Mo(PMe3)3(?-HSiHPh2)H4, and Mo(PMe3)3(?2-H2-H2Si2Ph4)H2. ... Mo(PMe3)4(?2-H2-H2SiPh2H)H and Mo(PMe3)3(?2-H2-H2Si2Ph4)H2 are respectively the first examples of complexes that feature a hypervalent ?2-H2-H2SiPh2H silyl ligand and a chelating disilane ligand, and both compounds convert to the diphenylsilane adduct, Mo(PMe3)3(?-HSiHPh2)H4, in the presence of H2. ...

Ashley A. Zuzek; Gerard Parkin

2014-05-30T23:59:59.000Z

350

Ab initio MO studies on disilane, germylsilane, and digermane radical anions as prototypes of polymer anions with silicon and germanium backbones  

Science Journals Connector (OSTI)

Ab initio MO studies on disilane, germylsilane, and digermane radical anions as prototypes of polymer anions with silicon and germanium backbones ...

Tsukasa Tada; Reiko Yoshimura

1993-01-01T23:59:59.000Z

351

Evaluation of Pre-sulfided NiMo/?-Al2O3 for Hydrodeoxygenation of Microalgae Oil to Produce Green-diesel  

Science Journals Connector (OSTI)

Evaluation of Pre-sulfided NiMo/?-Al2O3 for Hydrodeoxygenation of Microalgae Oil to Produce Green-diesel ... Energy Fuels, Just Accepted Manuscript ...

Lin Zhou; Adeniyi Lawal

2014-12-05T23:59:59.000Z

352

Self-assembled porous MoO2/graphene microspheres towards high performance anodes for lithium ion batteries  

Science Journals Connector (OSTI)

Abstract Three dimensional (3D) porous self-assembled MoO2/graphene microspheres are successfully synthesized via microwave-assisted hydrothermal process in a short reaction time followed by thermal annealing. Such rationally designed multifunctional hybrid nanostructure is constructed from interconnected MoO2 nanoparticles (35nm), which is self-assembled into ordered nanoporous microspheres via strong electrostatic attraction between graphene sheets and MoO2 nanoparticles. The MoO2/graphene hybrid structure delivers a high reversible capacity with significantly enhanced cycling stability (?1300mAhg?1 after 80 cycles at C/10 rate) and excellent rate capability (913 and 390mAhg?1 at 2C and 5C rates, respectively), when used as an anode material. The microspheres are interconnected and well encapsulated by the flexible graphene sheets, which not only accommodates large volume change but also increases the electrical conductivity of the hybrid structure. Moreover, nanoporous voids present in the 3D framework facilitate effective electrolyte penetration and make a direct contact with the active MoO2 nanoparticles, thereby greatly enhancing lithium ion transport. The strategic combination of self-assembly, nanoporous voids, 3D network and intriguing properties of graphene sheets provides excellent electrochemical performance as anode materials for Lithium ion battery applications.

Kowsalya Palanisamy; Yunok Kim; Hansu Kim; Ji Man Kim; Won-Sub Yoon

2015-01-01T23:59:59.000Z

353

Coadsorption as a probe of mechanism: cyclic sulfides and straight chain thiols on Mo(110)  

SciTech Connect

The authors reported that tetrahydrothiophene and trimethylene sulfide undergo desulfurization on Mo(110) to form gaseous alkanes and alkenes in a temperature-programmed reaction experiment. In both cases, straight chain alkane evolution preceded alkene evolution. They proposed that the intermediate leading to straight chain alkanes and alkenes from these two cyclic sulfides is a surface thiolate. The thiolate undergoes competitive C/sub 1/-hydrogenation to alkane and C/sub 2/-dehydrogenation to alkene, depending on the surface hydrogenation concentration. They report here that coadsorbed cyclic sulfides C/sub n/H/sub 2n/S (n = 3, 4) and linear thiols C/sub m/H/sub 2m+1/SH(m = 2, 3, 4) react during a temperature-programmed reaction experiment to form alkanes C/sub n/H/sub 2n+2/ and C/sub m/H/sub 2m+2/ at exactly the same temperature. These experiments lend powerful support to their proposal that cyclic sulfides and straight chain thiols react on Mo(110) by way of a thiolate intermediate.

Roberts, J.T.; Friend, C.M.

1987-07-08T23:59:59.000Z

354

Model hydrodesulfurization reactions: saturated C/sub 4/S molecules on Mo(110)  

SciTech Connect

The reactions of tetrahydrothiophene and 1-butanethiol on Mo(110) have been investigated by using temperature-programmed reaction spectroscopy, isotopic exchange reactions, and Auger electron spectroscopy. At low exposures, tetrahydrothiophene decomposes below 400 K to gaseous dihydrogen and surface carbon and sulfur. Higher tetrahydrothiophene exposures also result in reaction limited formation of butane and butene at 350 and 380 K, respectively. Preadsorption of a saturation coverage of hydrogen or deuterium atoms decreases the temperature at which butane is formed by 50 K and increases the yield of butane by a factor of approximately 6 at reaction saturation. The butene formation peak is unaffected by the presence of excess surface hydrogen. Reversible desorption of molecularly bound tetrahydrothiophene from the Mo(110) surface is observed at 310 K. In the absence of preadsorbed hydrogen, approximately 25% of the tetrahydrothiophene that reacts forms hydrocarbons, as measured by Auger electron spectroscopy. An irreversibly bound hydrocarbon fragment is present on the surface which decomposes at 565 K to produce gaseous dihydrogen. The butane, butene, and dihydrogen incorporate surface deuterium. The proposed mechanism for this reaction is initial hydrogenation of one of the ..cap alpha..-carbon atoms with accompanying C-S bond scission.

Roberts, J.T.; Friend, C.M.

1986-11-12T23:59:59.000Z

355

Carbon migration in 5Cr-0.5Mo/21Cr-12Ni dissimilar metal welds  

SciTech Connect

The carbon migration between a ferritic steel and an austenitic steel was studied in submerged arc-welded 5Cr-0.5Mo/21Cr-12Ni dissimilar metal welds (DMWs) after aging at 500 C for various times and after long-term service in technical practice. The distribution of carbon, chromium, nickel, and iron in the areas around the weld interface was determined by electron probe microanalysis, and the microstructural aspect in the carbon-depleted/enriched zone was characterized by optical microscopy and transmission electron microscopy (TEM). Furthermore, the precipitation sequences and composition characteristics of the carbides were identified by diffraction pattern microanalysis and energy-dispersive X-ray (EDX) microanalysis. It was found (1) that there exists a coherent relationship between intracrystalline M{sub 23}C{sub 6} and the austenitic matrix; (2) that the composition of M{sub 23}C{sub 6} in the carbon-enriched zone is independent of the duration of aging and service; (3) that the maximum carbon concentration is determined by the carbide type, the composition characteristic of precipitated carbides, and the concentration of carbide-forming Cr adjacent to the weld interface in the carbon-enriched zone; and (4) that the carbon migration in the 5Cr-0.5Mo/21Cr-12Ni DMWs can be described by a diffusion model.

Huang, M.L.; Wang, L. [Dalian Univ. of Technology (China). Dept. of Materials Engineering

1998-12-01T23:59:59.000Z

356

Localized Corrosion of a Neutron Absorbing Ni-Cr-Mo-Gd Alloy  

SciTech Connect

The National Spent Nuclear Fuel Program, located at the Idaho National Laboratory (INL), has developed a new nickel-chromium-molybdenum-gadolinium structural alloy for storage and long-term disposal of spent nuclear fuel (SNF). The new alloy will be used for SNF storage container inserts for nuclear criticality control. Gadolinium has been chosen as the neutron absorption alloying element due to its high thermal neutron absorption cross section. This alloy must be resistant to localized corrosion when exposed to postulated Yucca Mountain in-package chemistries. The corrosion resistance properties of three experimental heats of this alloy are presented. The alloys performance are be compared to Alloy 22 and borated stainless steel. The results show that initially the new Ni-Cr-Mo-Gd alloy is less resistant to corrosion as compared to another Ni-Cr-Mo-Gd alloy (Alloy 22); but when the secondary phase that contains gadolinium (gadolinide) is dissolved, the alloy surface becomes passive. The focus of this work is to qualify these gadolinium containing materials for ASME code qualification and acceptance in the Yucca Mountain Repository.

R.E. Mizia; T. E. Lister; P. J. Pinhero; T. L. Trowbridge

2005-04-01T23:59:59.000Z

357

Properties of DU-10wt%Mo Alloys Subjected to Various Post-Rolling Heat Treatments  

SciTech Connect

Mechanical properties of depleted uranium-molybdenum (U-Mo) alloys subjected to different post-processing treatments have been obtained using microhardness, quasi-static tensile tests, and scanning electron microscopy failure analysis. U-Mo alloy foils are currently under investigation for potential fuel conversion of high power research reactors to low enriched uranium fuel. Although mechanical properties take on a secondary effect during irradiation, an understanding of the alloy behavior during fabrication and the effects of irradiation on the integrity of the fuel is essential. In general, the microhardness was insensitive to annealing temperature but decreased with annealing duration. Yield strength, Youngs modulus and ultimate tensile strength improved with both increasing annealing temperature and duration. The failure mode was also insensitive to annealing conditions, but was significantly controlled by the impurity concentration of the alloy, especially carbon. Values obtained from literature are also provided with reasonable agreement based on extrapolation of annealing duration, even though processing conditions and applications were quite different in some instances.

Douglas E. Burkes; Ramprashad Prabhakaran; Thomas Hartmann; Jan-Fong Jue; Francine J. Rice

2010-06-01T23:59:59.000Z

358

SYNTHESIS AND FABRICATION OF MO-W COMPONENTS FOR NEUTRON RESONANCE SPECTROSCOPY TEMPERATURE MEASUREMENT  

SciTech Connect

A Molybdenum--{sup 182}Tungsten (Mo-{sup 182}W) alloy was specified for an application that would ultimately result in the measurement of temperature and particle velocity during the steady state time following the shock loading of various materials. The {sup 182}W isotope provides a tag for the analysis of neutron resonance line shape from which the temperature may be calculated. The material was specified to have 1.8 atom percent W, with W-rich regions no larger than 1 {micro}m in size. Both the composition and W distribution were critical to the experiment. Another challenge to the processing was the very small quantity of {sup 182}W material available for the synthesis of the alloy. Therefore, limited fabrication routes were available for evaluation. Several synthesis and processing routes were explored to fabricate the required alloy components. First, precipitation of W onto Mo powder using ammonium metatungstate was investigated for powder synthesis followed by uniaxial hot pressing. Second, mechanical alloying (MA) followed by hot isostatic pressing (HIP) and warm forging was attempted. Finally, arc-melting techniques followed by either hot rolling or crushing the alloyed button into powder and consolidation were pursued. The results of the processing routes and characterization of the materials produced will be discussed.

S. BINGERT; P. DESCH; E. TRUJILLO

1999-09-01T23:59:59.000Z

359

Electronic structure and conductivity of nanocomposite metal (Au,Ag,Cu,Mo)-containing amorphous carbon films  

SciTech Connect

In this work, we study the influence of the incorporation of different metals (Me = Au, Ag, Cu, Mo) on the electronic structure of amorphous carbon (a-C:Me) films. The films were produced at room temperature using a novel pulsed dual-cathode arc deposition technique. Compositional analysis was performed with secondary neutral mass spectroscopy whereas X-ray diffraction was used to identify the formation of metal nanoclusters in the carbon matrix. The metal content incorporated in the nanocomposite films induces a drastic increase in the conductivity, in parallel with a decrease in the band gap corrected from Urbach energy. The electronic structure as a function of the Me content has been monitored by x-ray absorption near edge structure (XANES) at the C K-edge. XANES showed that the C host matrix has a dominant graphitic character and that it is not affected significantly by the incorporation of metal impurities, except for the case of Mo, where the modifications in the lineshape spectra indicated the formation of a carbide phase. Subtle modifications of the spectral lineshape are discussed in terms of nanocomposite formation.

Endrino, Jose L.; Horwat, David; Gago, Raul; Andersson, Joakim; Liu, Y.S.; Guo, Jinghua; Anders, Andre

2008-05-14T23:59:59.000Z

360

On the bonding nature of electron states for the Fe-Mo double perovskite  

SciTech Connect

The electronic transport as well as the effect of an external magnetic field has been investigated on manganese-based materials, spinels and perovskites. Potential applications of double perovskites go from magnetic sensors to electrodes in solid-oxide fuel cells; besides the practical interests, it is known that small changes in composition modify radically the physical properties of double perovskites. We have studied the Sr{sub 2}FeMoO{sub 6} double perovskite compound (SFMO) using first-principles density functional theory. The calculations were done within the generalized gradient approximation (GGA) scheme with the Perdew-Burke-Ernzerhof (PBE) functional. We have made a detailed analysis of each electronic state and the charge density maps around the Fermi level. For the electronic properties of SFMO it was used a primitive cell, for which we found the characteristic half-metallic behavior density of states composed by e{sub g} and t{sub 2g} electrons from Fe and Mo atoms. Those peaks were tagged as bonding or antibonding around the Fermi level at both, valence and conduction bands.

Carvajal, E.; Cruz-Irisson, M. [ESIME-Culhuacn, Instituto Politcnico Nacional, Av. Santa Ana 1000, C.P. 04430, Mxico, D.F. (Mexico); Oviedo-Roa, R. [Programa de Investigacin en Ingeniera Molecular, Instituto Mexicano del Petrleo, Eje Central Lzaro Crdenas Norte 152, C.P. 07730, Mxico, D.F. (Mexico); Navarro, O. [Instituto de Investigaciones en Materiales, Universidad Nacional Autnoma de Mxico, A.P. 70-360, 04510, Mxico, D.F. (Mexico)

2014-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Correlation between structure, phonon spectra, thermal expansion, and thermomechanics of single-layer MoS2  

Science Journals Connector (OSTI)

Using first-principles simulation, the correlation between structure, phonon spectra, thermal expansion, and thermomechanics of single-layer MoS2 is established. The laminar structure results in the low-dimension ZA mode with a parabolic dispersion and negative Grneisen constants (?), while the nonorthogonal covalent MoS bonds (or intralayer thickness) result in the interatom and interdirection vibrational hybridizations, which tend to increase ?. There is a negative-positive crossover in thermal expansion coefficient at 20 K, because of the competition between the modes with negative and positive ?. Although the phononic activation at finite temperatures has a stiffening effect on the bulk modulus, the dominant effect from thermal expansion softens the lattice upon heating. The intralayer thickness results in the similarity between the thermal expansions of SL and bulk MoS2. Our numerical results explicitly support that the experimentally measured thermal shifts of the Raman modes are dominated by multiphonon scattering, but not thermal expansion.

Liang Feng Huang; Peng Lai Gong; Zhi Zeng

2014-07-15T23:59:59.000Z

362

High-temperature phase stability and tribological properties of laser clad Mo{sub 2}Ni{sub 3}Si/NiSi metal silicide coatings  

SciTech Connect

Mo{sub 2}Ni{sub 3}Si/NiSi wear-resistant metal silicide composite coatings consisting of Mo{sub 2}Ni{sub 3}Si primary dendrite and interdendritic Mo{sub 2}Ni{sub 3}Si/NiSi eutectic were fabricated on substrate of an austenitic stainless steel AISI321 by laser cladding using Ni-Mo-Si elemental powder blends. The high-temperature structural stability of the coating was evaluated by aging at 800 deg. C for 1-50 h. High-temperature sliding wear resistance of the as-laser clad and aged coatings was evaluated at 600 deg. C. Results indicate that the Mo{sub 2}Ni{sub 3}Si/NiSi metal silicides coating has excellent high temperature phase stability. No phase transformation except the dissolution of the eutectic Mo{sub 2}Ni{sub 3}Si and the corresponding growth of the Mo{sub 2}Ni{sub 3}Si primary dendrite and no elemental diffusion from the coating into the substrate were detected after aging the coating at 800 deg. C for 50 h. Aging of the coating at 800 deg. C leads to gradual dissolution of the interdendritic eutectic Mo{sub 2}Ni{sub 3}Si and subsequent formation of a dual-phase structure with equiaxed Mo{sub 2}Ni{sub 3}Si primary grains distributed in the NiSi single-phase matrix. Because of the strong covalent-dominated atomic bonds and high volume fraction of the ternary metal silicide Mo{sub 2}Ni{sub 3}Si, both the original and the aged Mo{sub 2}Ni{sub 3}Si/NiSi coating has excellent wear resistance under pin-on-disc high-temperature sliding wear test conditions, although hardness of the aged coating is slightly lower than that of the as-clad coating.

Lu, X.D. [Laboratory of Laser Materials Processing and Surface Engineering, School of Materials Science and Engineering, Beihang University (China); Wang, H.M. [Laboratory of Laser Materials Processing and Surface Engineering, School of Materials Science and Engineering, Beihang University (China)]. E-mail: wanghuaming@263.net

2004-10-18T23:59:59.000Z

363

Dissimilar-weld failure analysis and development. Comparative behavior of similar and dissimilar welds. Final report. [Welds of 2-1/4Cr-1Mo to 2-1/4Cr-1Mo using 2-1/4Cr-1Mo filler material; and austenitic to ferritic steel welds made by fusion welding alloy-800H to 2-1/4Cr-1Mo using nickel base filler metal ERNiCr-3  

SciTech Connect

The 593/sup 0/C (1100/sup 0/F) stress rupture behavior of similar metal welds (SMWs) and dissimilar metal welds (DMWs) was investigated under cyclic load and cyclic temperature conditions to provide insight into the question, ''Why do DMWs fail sooner than SMWs in the fossil fuel boilers.'' The weld joints of interest were an all ferritic steel SMW made by fusion welding 2-1/4Cr-1Mo to 2-1/4Cr-1Mo using 2-1/4Cr-1Mo filler metal and an austenitic to ferritic steel DMW made by fusion welding Alloy-800H to 2-1/4Cr-1Mo using a nickel base filler metal ERNiCr-3. The stress rupture behavior obtained on cross weld specimens was similar for both types of welds with only a 20% reduction in rupture life for the DMW. For rupture times less than 1500 hours, failures occurred in the 2-1/4Cr-1Mo base metal whereas, for rupture times greater than 1500 hours, failures occurred in the 2-1/4Cr-1Mo heat affected zone (HAZ). The HAZ failures exhibited a more brittle appearance than the base metal failures for both types of welds and it appears that the life of both joints was limited by the stress rupture properties of the HAZ. These results support the hypothesis that increased residual stresses due to abrupt changes in hardness (strength) of metals involved are the major contributors to the reduction in life of DMWs as compared to SMWs. 10 refs., 15 figs., 7 tabs.

Busboom, H.; Ring, P.J.

1986-07-01T23:59:59.000Z

364

Deformation effect on the double Gamow-Teller matrix element of 100Mo for the 0+?0+ transition  

Science Journals Connector (OSTI)

The two neutrino double beta decay of 100Mo for the 0+?0+ transition is studied in the Hartree-Fock-Bogoliubov (HFB) framework. Prior to the calculation of the double Gamow-Teller matrix element MGT2?, the reliability of the intrinsic wave functions has been established by obtaining an overall agreement between a number of theoretically calculated spectroscopic properties and the available experimental data for 100Mo and 100Ru. It has been further noticed that there is a necessity of an appropriate amount of deformation in the HFB intrinsic state to obtain a realistic MGT2?.

B. M. Dixit, P. K. Rath, and P. K. Raina

2002-02-21T23:59:59.000Z

365

Large-scale 2D electronics based on single-layer MoS[subscript 2] grown by chemical vapor deposition  

E-Print Network (OSTI)

2D nanoelectronics based on single-layer MoS[subscript 2] offers great advantages for both conventional and ubiquitous applications. This paper discusses the large-scale CVD growth of single-layer MoS[subscript 2] and ...

Wang, H.

366

LS-80 MCT/MVl124  

NLE Websites -- All DOE Office Websites (Extended Search)

0 0 MCT/MVl124 January 29, 19R7 F.VALUATION OF EFFECTS OF CABLE LENGTH ON ACCELEROMETER RESPONSF. hy J. A. Jendrzeiczyk anrl R. K. Smith Materials and Components Technolo~y Division 1.0 BACKGROUND The Mvancerl Photon Source CAPS) machtnf' features a stora~e rin~ w1.th a rar/ills of 5')3.5 ft. Gronnd motion at the APS site will he studied hy simultaneously mea!'lurin~ respons~ at seven (7) locations. As illustrateil in Fig. 1, the selecterl locations correspond to the center of the stora~e ring and 60° compass points. Wi th the hattery-powered instrumentation amnlifiers and 7-channel tape recorder located at the site center accelerometer cahle lengths of 62R feet (the outer radius of the experimental hall) are required. To allow for changes in the terrain and

367

LS-81 MCT/MV1125  

NLE Websites -- All DOE Office Websites (Extended Search)

1 1 MCT/MV1125 January 29, 1987 EVALUATION OF AMPLITUDE AND FREQUENCY RESPONSE CHARACTERISTICS OF THE TEAC MODEL MR-30 TAPE RECORDER by J. A. Jendrzejczyk and R. K. Smith Materials and Components Technologr Division 1.0 OBJECTIVE Verify operation of the Teac model MR-30 tape recorder at tape speeds and conditions representative of those associated with the collection of ground motion and building vibration data. 2.0 TEST PROCEDURE The basic test setup is shown in Fig. 1. All seven record amplifier inputs are connected in parallel with a random noise generator that supplies the input test vol tage. Outputs, which are generated in the playback mode, are compared to a reference from the random noise generator and a transfer function is calculated via a HP model 5451C Fast

368

LS Directorate Science Advisory Committee (SAC)  

NLE Websites -- All DOE Office Websites (Extended Search)

Photon Sciences Science Advisory Committee (SAC) Photon Sciences Science Advisory Committee (SAC) Charter The Photon Sciences Science Advisory Committee (SAC) is responsible for advising the Associate Laboratory Director (ALD) for Photon Sciences on issues related to the scientific utilization of Photon Sciences facilities and on developments required to achieve and maintain the highest possible scientific productivity. In keeping with this, the SAC will provide advice on the following topics: Scientific output and utilization of Photon Sciences facilities Long-term scientific directions Planning, development, and operation of Photon Sciences facilities Policies and procedures relevant to user access and utilization of scientific facilities Members are appointed by the ALD for three-year terms, renewable by mutual consent. The Chair of the Photon Sciences Users' Executive Committee will be an ex-officio member of the SAC. In general, the full SAC will meet at least annually. The ALD, in consultation with the chair of the SAC, may call additional SAC meetings as necessary. The output of the SAC will consist of a confidential report of their findings and recommendations conveyed in a written report submitted to the ALD shortly after each SAC meeting.

369

LS-l25 Y. Jin  

NLE Websites -- All DOE Office Websites (Extended Search)

Fig. la. The radius is 2 cm and the length 20 cm. The cavity has twoO.4-cm radius beam ports with a length of 2 cm each. We first use an octant of the cavity (Fig. Ib) and run a...

370

Tell'smoreNews 3Ls ASSOCIATION  

E-Print Network (OSTI)

in our minds: "To live single and free like a tree and in brotherhood like a forest". Hasan is a keen forward to seeing you later in the year, in a class, Club meeting, an event or simply in the Graham Hills

Strathclyde, University of

371

Number: Revision: A LS-OPS-0065  

E-Print Network (OSTI)

in the upstream and downstream sections when bleeding up the monochromator. II Section between UHV Vat Valve1 and Beryllium Window A. Bleed up 1. Notify the Coordinator ( Beeper 5824) 2. Close and seal NSLS UHV front end valve 3. Close and seal UHV Vat Valve 1 4. Coordinator places Yellow tag on UHV Vat valve 1 5. Hook up

Ohta, Shigemi

372

Broadcasting Station LS-1, Buenos Aires  

Science Journals Connector (OSTI)

... point of view the economy and ease of operation have set up new standards. The audio-frequency response does not vary more than one decibel between 30 and 10,000 cycles ... response does not vary more than one decibel between 30 and 10,000 cycles. The audio-distortion is less than 5 per cent even at complete modulation. Provisions have been ...

1938-09-17T23:59:59.000Z

373

Mild oxidation of tetrahydrothiophene to sulfolane over V-, Mo- and W-containing layered double hydroxides  

Science Journals Connector (OSTI)

A series of layered double hydroxides (LDH) with Mg2+ and Al3+ cations in the brucite-like layer and W-, V- and Mo-oxospecies in the interlayer gallery were prepared, characterized and tested as catalysts for the sulfolane synthesis by mild sulfoxidation of tetrahydrothiophene (THT) with H2O2. The structural and textural properties of solids and the nature of the metal species were investigated by X-ray diffraction (XRD), N2 adsorption, thermogravimetric analysis (TGA), diffuse reflectance ultraviolet spectroscopy (DRUV), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The catalytic activity was evaluated in the liquid-phase THT oxidation with dilute H2O2 in various organic solvents and temperature range of 2030C. The best performances in terms of catalytic activity and stability were obtained with WO42?-containing LDH catalyst.

Alina-Livia Maciuca; Emil Dumitriu; Franois Fajula; Vasile Hulea

2008-01-01T23:59:59.000Z

374

Gamow-Teller response in deformed even and odd neutron-rich Zr and Mo isotopes  

E-Print Network (OSTI)

Beta-decay properties of neutron-rich Zr and Mo isotopes are investigated within a microscopic theoretical approach based on the proton-neutron quasiparticle random-phase approximation. The underlying mean field is described self-consistently from deformed Skyrme Hartree-Fock calculations with pairing correlations. Residual separable particle-hole and particle-particle forces are also included in the formalism. The structural evolution in these isotopic chains including both even and odd isotopes is analyzed in terms of the equilibrium deformed shapes. Gamow-Teller strength distributions, beta-decay half-lives, and beta-delayed neutron-emission probabilities are studied, stressing their relevance to describe the path of the nucleosynthesis rapid neutron capture process.

P. Sarriguren; A. Algora; J. Pereira

2014-03-05T23:59:59.000Z

375

Small-scale Specimen Testing of Monolithic U-Mo Fuel Foils  

SciTech Connect

The objective of this investigation is to develop a shear punch testing (SPT) procedure and standardize it to evaluate the mechanical properties of irradiated fuels in a hot-cell so that the tensile behavior can be predicted using small volumes of material and at greatly reduced irradiation costs. This is highly important in the development of low-enriched uranium fuels for nuclear research and test reactors. The load-displacement data obtained using SPT can be interpreted in terms of and correlated with uniaxial mechanical properties. In order to establish a correlation between SPT and tensile data, sub-size tensile and microhardness testing were performed on U-Mo alloys. In addition, efforts are ongoing to understand the effect of test parameters (such as specimen thickness, surface finish, punch-die clearance, crosshead velocity and carbon content) on the measured mechanical properties, in order to rationalize the technique, prior to employing it on a material of unknown strength.

Ramprashad Prabhakaran; Douglas E. Burkes; James I. Cole; Indrajit Charit; Daniel M. Wachs

2008-10-01T23:59:59.000Z

376

Microstructural Characterization of Irradiated U-7Mo/Al-5Si Dispersion to High Fission Density  

SciTech Connect

The fuel development program for research and test reactors calls for improved knowledge on the effect of microstructure on fuel performance in reactors. This work summarizes the recent TEM microstructural characterization of an irradiated U-7Mo/Al-5Si dispersion fuel plate (R3R050) irradiated in the Advanced Test Reactor (ATR) at Idaho National Laboratory to 5.21021 fissions/cm3. While a large fraction of the fuel grains is decorated with large bubbles, there is no evidence showing interlinking of these large bubbles at the specified fission density. The attachment of solid fission product precipitates to the bubbles is likely the result of fission product diffusion into these bubbles. The process of fission gas bubble superlattice collapse appears through bubble coalescence. The results are compared with the previous TEM work of the dispersion fuels irradiated to lower fission density from the same fuel plate.

J. Gan; B. D. Miller; D. D. Keiser, Jr.; A. B. Robinson; J. W. Madden; P. G. Medvedev; D. M. Wachs

2014-11-01T23:59:59.000Z

377

Thermodynamic modeling and experimental validation of the Fe-Al-Ni-Cr-Mo alloy system  

SciTech Connect

NiAl-type precipitate-strengthened ferritic steels have been known as potential materials for the steam turbine applications. In this study, thermodynamic descriptions of the B2-NiAl type nano-scaled precipitates and body-centered-cubic (BCC) Fe matrix phase for four alloys based on the Fe-Al-Ni-Cr-Mo system were developed as a function of the alloy composition at the aging temperature. The calculated phase structure, composition, and volume fraction were validated by the experimental investigations using synchrotron X-ray diffraction and atom probe tomography. With the ability to accurately predict the key microstructural features related to the mechanical properties in a given alloy system, the established thermodynamic model in the current study may significantly accelerate the alloy design process of the NiAl-strengthened ferritic steels.

Teng, Zhenke [ORNL; Zhang, F [CompuTherm LLC, Madison, WI; Miller, Michael K [ORNL; Liu, Chain T [Hong Kong Polytechnic University; Huang, Shenyan [ORNL; Chou, Y.T. [Multi-Phase Services Inc., Knoxville; Tien, R [Multi-Phase Services Inc., Knoxville; Chang, Y A [ORNL; Liaw, Peter K [University of Tennessee, Knoxville (UTK)

2012-01-01T23:59:59.000Z

378

Intense femtosecond photoexcitation of bulk and monolayer MoS2  

E-Print Network (OSTI)

The effect of femtosecond laser irradiation on bulk and single-layer MoS2 on silicon oxide is studied. Optical, Field Emission Scanning Electron Microscopy (FESEM) and Raman microscopies were used to quantify the damage. The intensity of A1g and E2g1 vibrational modes was recorded as a function of the number of irradiation pulses. The observed behavior was attributed to laser-induced bond breaking and subsequent atoms removal due to electronic excitations. The single-pulse optical damage threshold was determined for the monolayer and bulk under 800nm and 1030nm pulsed laser irradiation and the role of two-photon versus one photon absorption effects is discussed.

Paradisanos, I; Fotakis, C; Kioseoglou, G; Stratakis, E

2015-01-01T23:59:59.000Z

379

Induced codeposition. 2: A mathematical model describing the electrodeposition of Ni-Mo alloys  

SciTech Connect

A steady-state mathematical model was developed to predict the behavior of the induced codeposition of Ni-Mo alloys in the kinetic and mass-transport controlled regions on rotating cylinder electrodes. The kinetic regions were characterized by a simple Tafel expression. A Nernst boundary layer representation described the mass transfer of ions through a diffusion layer. The governing features of the induced codeposition mechanism included soluble nickel acting as a catalyst to the molybdenum deposition and the generation of an absorbed intermediate species on the electrode surface. The resulting alloy composition was simulated for two electrolytes over a wide range of current densities and electrode rotation rates. The model predictions agreed with the observed trends in the experimental data.

Podlaha, E.J.; Landolt, D. [Ecole Polytechnique Federale de Lausanne (Switzerland)

1996-03-01T23:59:59.000Z

380

First-principles real-space calculations of Fe impurities in Mo and Nb  

Science Journals Connector (OSTI)

We have applied the recently developed first-principles real-space muffin-tin-orbital scheme to study the electronic structure around Fe impurities in bcc Mo and Nb hosts. These local-spin-density calculations give values for the magnetic moment, hyperfine field, and isomer shift at the impurity site, which are in good agreement with experimental results, when available. We note that, in contrast with reported Korringa-Kohn-Rostoker Greens-function (KKR-GF) results for the same systems, the magnetic behavior at the impurity is well described when the angular momentum of the wave functions is cut off at lmax=2. Our local impurity moments, calculated using a minimum basis of s, p, and d orbitals, are compatible with those obtained via the KKR-GF formalism, when a cutoff lmax=3 is used.

Helena M. Petrilli and Sonia Frota-Pessa

1993-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Results of PIE of experimental (U-Mo)-based LEU disperse fuel compositions  

SciTech Connect

Performed in frames of Russian RERTR Program were post-irradiation examinations of 12 types of disperse (U-Mo)-based fuel compositions in Al matrix. The goal of the work was to substantiate serviceability of the new fuel compositions being developed for utilization in Russian-built pool-type research reactors. Among the methods of PIE used in this work were visual examination, gamma-scanning, optical metallography, SEM, X-ray analysis and some others. The present paper is dedicated to an analysis of the main results of PIE completed so far. Special attention has been paid to the parameters affecting formation of interaction layer between fuel granules and matrix Al. (author)

Vatulin, A.; Dobrikova, I.; Suprun, V.; Petrov, Y.; Trifonov, Y. [VNIINM, Moscow (Russian Federation); Alexandrov, V.; Ijutov, A.; Novoselov, A.; Starkov, V.; Shishin, V.; Yakovlev, V. [RIAR, Dimitrovgrad (Russian Federation)

2008-07-15T23:59:59.000Z

382

Solution-based thermodynamic modeling of the NiAlMo system using first-principles calculations  

E-Print Network (OSTI)

function with appropriate treatment of the chemical ordering contribution. In addition, notable in current and future power generation and transportation technologies. Moreover, the refrac- tory metal Mo-base super- alloys [1­6]. Despite its widespread use, quantitative guidelines for future alloy development

Chen, Long-Qing

383

CdSe-MoS2: A Quantum Size-Confined Photocatalyst for Hydrogen Evolution from Water under Visible Light  

E-Print Network (OSTI)

and for the conversion of carbon dioxides into methanol and hydrocarbons. Metal chalcogenides1­9 are promisingCdSe-MoS2: A Quantum Size-Confined Photocatalyst for Hydrogen Evolution from Water under Visible driven pathway to hydrogen. Hydrogen is not only an environmentally benign fuel for the generation

Osterloh, Frank

384

Emergent Honeycomb Lattice in LiZn[subscript 2]Mo[subscript 3]O[subscript 8  

E-Print Network (OSTI)

We introduce the idea of emergent lattices, where a simple lattice decouples into two weakly coupled lattices as a way to stabilize spin liquids. In LiZn[subscript 2]Mo[subscript 3]O[subscript 8], the disappearance of 2/3 ...

Flint, Rebecca

385

High-Energy Cathode Materials (Li2MnO3LiMO2) for Lithium-Ion Batteries  

Science Journals Connector (OSTI)

High-Energy Cathode Materials (Li2MnO3LiMO2) for Lithium-Ion Batteries ... Fabrication of Nitrogen-Doped Holey Graphene Hollow Microspheres and Their Use as an Active Electrode Material for Lithium Ion Batteries ... Li-rich materials are considered the most promising for Li-ion battery cathodes, as high energy densities can be achieved. ...

Haijun Yu; Haoshen Zhou

2013-03-28T23:59:59.000Z

386

Epitaxial growth of few-layer MoS2(0001) on FeS2{100}  

E-Print Network (OSTI)

for its tribological properties (e.g. as a lubricant) and catalytic properties (e.g. in hydrodesulphurisation).3 Recent studies have indeed demonstrated the potential of 2D MoS2 in device applications such as field effect transistors,4 optoelectronics,5...

Liu, T.; Temprano, I.; King, D. A.; Driver, S. M.; Jenkins, S. J.

2014-11-13T23:59:59.000Z

387

JOANNES M.O et al. HLA polymorphism and sickle cell disease 1 Abstract: 150 words Text: 1988 words  

E-Print Network (OSTI)

JOANNES M.O et al. HLA polymorphism and sickle cell disease 1 Abstract: 150 words Text: 1988 words References: 23 (568 words) Table: 3 Title: Infectious complications in sickle cell disease and HLA 62 ­ Fax : 590 48 33 29 tmariann@univ-ag.fr Keywords: sickle cell, infection, polymorphism, genetic

Paris-Sud XI, Université de

388

11/04/02 G. W. Rubloff AVS 2002 MS MoA5 1 Spatially Programmable Reactor Design  

E-Print Network (OSTI)

) reactor design · Process change impacts (often degrades) uniformity · Process optimization is constrained11/04/02 G. W. Rubloff ­ AVS 2002 ­ MS MoA5 1 Spatially Programmable Reactor Design: Toward a New recipe logic and timingProcess optimization requiresProcess optimization requires tradeoffs between

Rubloff, Gary W.

389

The photocatalysis of Bi{sub 2}MoO{sub 6} under the irradiation of blue LED  

SciTech Connect

Graphical abstract: - Highlights: OH trap and hole sink were involved to investigate the active radicals. Holes play a more important role in the degradation of RhB. The OH were related to the decomposition of phenol. The O{sub 2}-played a leading role in the photodegradation of phenol. Blue LED is competitive and promising alternative for the future application. - Abstract: Bi{sub 2}MoO{sub 6} has been reported as a promising photocatalyst in wastewater treatment. The active radicals generated over the Bi{sub 2}MoO{sub 6} during the photocatalytic process were thought to be hydroxyl radical (OH) but have not been proved. Herein, Bi{sub 2}MoO{sub 6} with nanoplate like morphology was synthesized and its photocatalytic performances in the degradation of rhodamine B (RhB) and phenol as colored and colorless model pollutants respectively were evaluated under the irradiation of blue light emitting diode (LED). The tert-butyl alcohol (TBA) as a OH trap and ethylene diamine tetraacetic acid (EDTA) as a hole sink were involved to investigate the main active groups that are generated on Bi{sub 2}MoO{sub 6} and function during the photodegradation of RhB and phenol. In addition, it is a competitive and promising alternative plan to use blue LED as light source for the future practical application in environmental remediation.

Sun, Yuanyuan; Wang, Wenzhong, E-mail: wzwang@mail.sic.ac.cn; Zhang, Ling; Sun, Songmei

2013-10-15T23:59:59.000Z

390

Effect of thin Mo2C layer on thermal stability of Si/SiO2/Ti/Cu system  

Science Journals Connector (OSTI)

The effect of introducing a thin Mo2C (30 nm) layer between Ti and Cu on the thermal stability of Si/SiO2/Ti/Cu system was studied using four-point probe (FPP), scanning electron microscopy (SEM), energy-dispersi...

C. C. Tripathi; Mukesh Kumar; Dinesh Kumar

2011-12-01T23:59:59.000Z

391

Microstructural characterization of as-cast biocompatible Co-Cr-Mo alloys  

SciTech Connect

The microstructure of a cobalt-base alloy (Co-Cr-Mo) obtained by the investment casting process was studied. This alloy complies with the ASTM F75 standard and is widely used in the manufacturing of orthopedic implants because of its high strength, good corrosion resistance and excellent biocompatibility properties. This work focuses on the resulting microstructures arising from samples poured under industrial environment conditions, of three different Co-Cr-Mo alloys. For this purpose, we used: 1) an alloy built up from commercial purity constituents, 2) a remelted alloy and 3) a certified alloy for comparison. The characterization of the samples was achieved by using optical microscopy (OM) with a colorant etchant to identify the present phases and scanning electron microscopy (SE-SEM) and energy dispersion spectrometry (EDS) techniques for a better identification. In general the as-cast microstructure is a Co-fcc dendritic matrix with the presence of a secondary phase, such as the M{sub 23}C{sub 6} carbides precipitated at grain boundaries and interdendritic zones. These precipitates are the main strengthening mechanism in this type of alloys. Other minority phases were also reported and their presence could be linked to the cooling rate and the manufacturing process variables and environment. - Research Highlights: {yields}The solidification microstructure of an ASTM-F75 type alloy were studied. {yields}The alloys were poured under an industrial environment. {yields}Carbides and sigma phase identified by color metallography and scanning microscopy (SEM and EDS). {yields}Two carbide morphologies were detected 'blocky type' and 'pearlite type'. {yields}Minority phases were also detected.

Giacchi, J.V., E-mail: jgiacchi@exa.unicen.edu.ar [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Buenos Aires (Argentina); Instituto de Fisica de Materiales Tandil (IFIMAT-FCE-CICPBA) Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399 B7000GHG Tandil (Argentina); Morando, C.N.; Fornaro, O. [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Buenos Aires (Argentina); Instituto de Fisica de Materiales Tandil (IFIMAT-FCE-CICPBA) Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399 B7000GHG Tandil (Argentina); Palacio, H.A. [Comision de Investigaciones Cientificas de la Provincia de Buenos Aires (CICPBA), Calle 526 e/10 y 11 B1096APP La Plata (Argentina); Instituto de Fisica de Materiales Tandil (IFIMAT-FCE-CICPBA) Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399 B7000GHG Tandil (Argentina)

2011-01-15T23:59:59.000Z

392

Development of an energy-use estimation methodology for the revised Navy Manual MO-303  

SciTech Connect

The U.S. Navy commissioned Pacific Northwest Laboratory (PNL) to revise and/or update the Navy Utilities Targets Manual, NAVFAC MO-303 (U.S. Navy 1972b). The purpose of the project was to produce a current, applicable, and easy-to-use version of the manual for use by energy and facility engineers and staff at all Navy Public Works Centers (PWCs), Public Works Departments (PWDs), Engineering Field Divisions (EFDs), and other related organizations. The revision of the MO-303 manual involved developing a methodology for estimating energy consumption in buildings and ships. This methodology can account for, and equitably allocate, energy consumption within Navy installations. The analyses used to develop this methodology included developing end-use intensities (EUIs) from a vast collection of Navy base metering and billing data. A statistical analysis of the metering data, weather data, and building energy-use characteristics was used to develop appropriate EUI values for use at all Navy bases. A complete Navy base energy reconciliation process was also created for use in allocating all known energy consumption. Initial attempts to use total Navy base consumption values did not produce usable results. A parallel effort using individual building consumption data provided an estimating method that incorporated weather effects. This method produced a set of building EUI values and weather adjustments for use in estimating building energy use. A method of reconciling total site energy consumption was developed based on a {open_quotes}zero-sum{close_quotes} principle. This method provides a way to account for all energy use and apportion part or all of it to buildings and other energy uses when actual consumption is not known. The entire text of the manual was also revised to present a more easily read understood and usable document.

Richman, E.E.; Keller, J.M.; Wood, A.G.; Dittmer, A.L.

1995-01-01T23:59:59.000Z

393

Far-infrared magnetoabsorption and refractive index of 2 H-MoS2  

Science Journals Connector (OSTI)

The far-infrared transmission of 2 H-MoS2 has been studied in magnetic fields up to 13 T, at temperatures between 1.5 and 40 K, in the spectral wave-number range 5-250 cm-1. A single resonance has been observed in the magnetoabsorption spectra of some natural crystals. The resonance energy has a weak magnetic field dependence, and a zero-field value corresponding to 6 cm-1. Optical pumping in the exciton bands near 2 eV strengthens the absorption and shifts it slightly. Polarization, intensity, anisotropy, and other measurements indicate that a probable cause of the absorption is magnetic resonance of Fe2+ impurity ions occupying octahedral sites with trigonal distortion in the MoS2 lattice. Based on this model, optical pumping effects are interpreted as being due to conversion of Fe3+ to Fe2+ via charge transfer following exciton decay. A search over a wide range of spectral wave number, magnetic field, and temperature has failed to reveal any "light mass" features attributable to free-carrier cyclotron resonance, interband, or hydrogenic impurity absorption. The presence of such absorption was implied by recent reports of exciton-associated magneto-oscillatory resonance, and related theoretical discussions. Interference fringes present in the transmission spectra of thicker samples have been used to obtain the value n0?=3.960.1 for the normal component of the low-frequency refractive index at 4.5 K. Comparison with other values from the literature leads to a determination of the temperature coefficient, (1n0?)dn0?dT?210-4 K-1. It is shown that electronic contributions apparently dominate the temperature dependence, whose sign and magnitude agree with that deduced from the known temperature dependence of the optical gap.

R. Kaplan

1976-11-15T23:59:59.000Z

394

M5Si3(M=Ti, Nb, Mo) Based Transition-Metal Silicides for High Temperature Applications  

SciTech Connect

Transition metal silicides are being considered for future engine turbine components at temperatures up to 1600 C. Although significant improvement in high temperature strength, room temperature fracture toughness has been realized in the past decade, further improvement in oxidation resistance is needed. Oxidation mechanism of Ti{sub 5}Si{sub 3}-based alloys was investigated. Oxidation behavior of Ti{sub 5}Si{sub 3}-based alloy strongly depends on the atmosphere. Presence of Nitrogen alters the oxidation behavior of Ti{sub 5}Si{sub 3} by nucleation and growth of nitride subscale. Ti{sub 5}Si{sub 3.2} and Ti{sub 5}Si{sub 3}C{sub 0.5} alloys exhibited an excellent oxidation resistance in nitrogen bearing atmosphere due to limited dissolution of nitrogen and increased Si/Ti activity ratio. MoSi{sub 2} coating developed by pack cementation to protect Mo-based Mo-Si-B composites was found to be effective up to 1500 C. Shifting coating composition to T1+T2+Mo{sub 3}Si region showed the possibility to extend the coating lifetime above 1500 C by more than ten times via formation of slow growing Mo{sub 3}Si or T2 interlayer without sacrificing the oxidation resistance of the coating. The phase equilibria in the Nb-rich portion of Nb-B system has been evaluated experimentally using metallographic analysis and differential thermal analyzer (DTA). It was shown that Nb{sub ss} (solid solution) and NbB are the only two primary phases in the 0-40 at.% B composition range, and the eutectic reaction L {leftrightarrow} Nb{sub SS} + NbB was determined to occur at 2104 {+-} 5 C by DTA.

Zhihong Tang

2007-12-01T23:59:59.000Z

395

Experimental and Theoretical EPR Study of Jahn?Teller-Active [HIPTN[subscript 3]N]MoL Complexes (L = N[subscript 2], CO, NH[subscript 3])  

E-Print Network (OSTI)

The trigonally symmetric Mo(III) coordination compounds [HIPTN[subscript 3]N]MoL (L = N[subscript 2], CO, NH[subscript 3]; [HIPTN3N]Mo = [(3,5-(2,4,6-i-Pr[subscript 3]C[subscript 6]H[subscript 2])[subscript 2]C[subscript ...

McNaughton, Rebecca L.

396

Results of U-xMo (x=7, 10, 12 wt.%) Alloy versus Al-6061 Cladding Diffusion Couple Experiments Performed at 500, 550 and 600 Degrees C  

SciTech Connect

The Reduced Enrichment for Research and Test Reactors (RERTR) program has been developing low enrichment fuel systems encased in Al 6061 for use in research and test reactors. UMo alloys in contact with Al and Al alloys can undergo diffusional interactions that can result in the development of interdiffusion zones with complex fine-grained microstructures composed of multiple phases. A monolithic fuel currently being developed by the RERTR program has local regions where the UMo fuel plate is in contact with the Al 6061 cladding and, as a result, the program finds information about interdiffusion zone development at high temperatures of interest. In this study, the microstructural development of diffusion couples consisting of U-7wt.%Mo, U-10wt.%Mo, and U-12wt.%Mo vs. Al 6061 (or 6061 aluminum) cladding, annealed at 500, 550, 600 degrees C for 1, 5, 20, 24, or 132 hours, was analyzed by backscatter electron microscopy and x-ray energy dispersive spectroscopy on a scanning electron microscope. Concentration profiles were determined by standardized wavelength dispersive spectroscopy and standardless x-ray energy dispersive spectroscopy. The results of this work shows that the presence of surface layers at the UMo/Al 6061 interface can dramatically impact the overall interdiffusion behavior in terms of rate of interaction and uniformity of the developed interdiffusion zones. It further reveals that relatively uniform interaction layers with higher Si concentrations can develop in UMo/Al 6061 couples annealed at shorter times and that longer times at temperature result in the development of more non-uniform interaction layers with more areas that are enriched in Al. At longer annealing times and relatively high temperatures, UMo/Al 6061 couples can exhibit more interaction compared to UMo/pure Al couples. The minor alloying constituents in Al 6061 cladding can result in the development of many complex phases in the interaction layer of UMo/Al6061 cladding couples, and some phases in the interdiffusion zones of UMo/Al6061 cladding couples are likely similar to those observed for UMo/pure Al couples.

Emmanuel Perez; Dennis D. Keiser, Jr.; Yongho Sohn

2013-04-01T23:59:59.000Z

397

Microstructural evolution during solution treatment of Co-Cr-Mo-C biocompatible alloys  

SciTech Connect

Three different Co-Cr-Mo-C alloys conforming to ASTM F75 standard were poured in an industrial environment and subjected to a conventional solution treatment at 1225 Degree-Sign C for several time intervals. The microstructural changes and transformations were studied in each case in order to evaluate the way in which treatment time influences the secondary phase fraction and clarify the microstructural changes that could occur. To assess how treatment time affects microstructure, optical microscopy and image analyzer software, scanning electron microscopy and energy dispersion spectrometry analysis were employed. The main phases detected in the as-cast state were: {sigma}-phase, M{sub 6}C, and M{sub 23}C{sub 6} carbides. The latter presented two different morphologies, blocky type and lamellar type. Despite being considered the most detrimental feature to mechanical properties, {sigma}-phase and lamellar carbides dissolution took place in the early stages of solution treatment. M{sub 23}C{sub 6} carbides featured two different behaviors. In the alloy obtained by melting an appropriate quantity of alloyed commercial materials, a decrease in size, spheroidization and transformation into M{sub 6}C carbides were simultaneously observed. In the commercial ASTM F75 alloy, in turn, despite being the same phase, only a marked decrease in precipitates size was noticed. These different behaviors could be ascribed to the initial presence of other phases in the alloy obtained from alloyed materials, such as {sigma}-phase and 'pearlitic' carbides, or to the initial precipitate size which was much larger in the first than in the commercial ASTM F75 alloy studied. M{sub 6}C carbides dissolved directly in the matrix as they could not be detected in samples solution-treated for 15 min. - Highlights: Black-Right-Pointing-Pointer Three different Co-Cr-Mo alloys were poured under an industrial environment. Black-Right-Pointing-Pointer Transformation of existing phases followed during conventional solution treatment. Black-Right-Pointing-Pointer In as-cast/treated samples, phases were identified by color metallography, SEM and EDS. Black-Right-Pointing-Pointer M{sub 23}C{sub 6} {yields} M{sub 6}C transformation was corroborated by SEM and EDS analysis. Black-Right-Pointing-Pointer Carbide spheroidization was also detected prior a noticeably carbide size decreasing.

Giacchi, J.V., E-mail: jgiacchi@exa.unicen.edu.ar [IFIMAT, Instituto de Fisica de Materiales Tandil, Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399, B7000GHG Tandil (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Av. Rivadavia 1917, C1033AA, Buenos Aires (Argentina); Fornaro, O. [IFIMAT, Instituto de Fisica de Materiales Tandil, Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399, B7000GHG Tandil (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Av. Rivadavia 1917, C1033AA, Buenos Aires (Argentina); Palacio, H. [IFIMAT, Instituto de Fisica de Materiales Tandil, Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399, B7000GHG Tandil (Argentina); Comision de Investigaciones Cientificas de la Provincia de Buenos Aires (CICPBA), Calle 526 e/10 y 11, B1096APP, La Plata (Argentina)

2012-06-15T23:59:59.000Z

398

Cavity Decoupling of Small Explosions in Limestone  

Science Journals Connector (OSTI)

...New Mexico, as a part of the HUMBLE REDWOOD III experiments. Two charges...Experiment Overview As a part of the HUMBLE REDWOOD III (HR III) experiment, three...Photogrammetric Report for the HUMBLE REDWOOD III Experiments (DTRA/J9CXTT...

Anastasia Stroujkova; Robert Reinke; Jeff Duray; Jessie Bonner

399

Preservation of limestone material culture with siloxanes  

E-Print Network (OSTI)

. The dark area represents the siloxane penetration depth in the stone. 62 Figure 4. 3. Energy dispersive X-ray spectrograms of three different distances away from the penetration depth. All three measurements were taken at a magnification of X120, with a...

Miller, Ann Elizabeth

2001-01-01T23:59:59.000Z

400

In metamorphosed limestone, dolostone,and marble  

E-Print Network (OSTI)

) or more in areas of subsidence from piping in thick unconsolidated material Fissures and voids present to a depth of 50 ft (15 m) in areas of subsidence from piping in thick,unconsolidated material Fissures

Torgersen, Christian

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Hydrotreatment of petroleum vaccum residue with NiMo supported on carbon black of hollow nano-particles  

SciTech Connect

Hydrogenation with NiMo catalyst on the carbon black of hollow sphere was very active to decrease asphaltene(hexane insoluble:HI) from 10% to 1% in the VR under the conditions of 340{degrees}C, 4h, and 10 MPa of H2. Non-protonated-aromatic carbons of remaining HI were converted to protonated carbons with increase of naphthenic carbons observed by {sup 13}C-NMR. Metallic compounds principally contained in HI were also converted to be hexane soluble(HS). It revealed that some of the metal containing compounds trapped in the asphaltene micelle are liberated from the micelle through the catalytic hydrogenation under mild conditions. The present catalyst was found much more active for the hydrogenative conversion of asphaltene and metallic compounds as well as the demetallation than the conventional demetallation catalysts, suggesting that NiMo/KB catalyst is highly dispersed to interact more intimately with asphaltene molecules.

Yamashita, N.; Sakanishi, K.; Mochida, I. [Kyushu Univ., Kasuga, Fukuoka (Japan)

1996-10-01T23:59:59.000Z

402

Calculation of Design Parameters for an Equilibrium LEU Core in the NBSR using a U7Mo Dispersion Fuel  

SciTech Connect

A plan is being developed for the conversion of the NIST research reactor (NBSR) from high-enriched uranium (HEU) fuel to low-enriched uranium (LEU) fuel. The LEU fuel may be a monolithic foil (LEUm) of U10Mo (10% molybdenum by weight in an alloy with uranium) or a dispersion of U7Mo in aluminum (LEUd). A previous report provided neutronic calculations for the LEUm fuel and this report presents the neutronics parameters for the LEUd fuel. The neutronics parameters for the LEUd fuel are compared to those previously obtained for the present HEU fuel and the proposed LEUm fuel. The results show no significant differences between the LEUm and the LEUd other than the LEUd fuel requires slightly less uranium than the LEUm fuel due to less molybdenum being present. The calculations include kinetics parameters, reactivity coefficients, reactivity worths of control elements and abnormal configurations, and power distributions under normal operation and with misloaded fuel elements.

Hanson A. L.; Diamond D.

2014-06-30T23:59:59.000Z

403

The effect of oxygen in the Si substrate on Mo, W, Ti, and Co silicide growth by infrared laser heating  

SciTech Connect

This study of the effect of implanted oxygen in the Si substrate was accomplished using an IR heating method and a combination of different materials analysis techniques. Principally, Auger electron spectroscopy combined with depth profiling was implemented to investigate the composition of the reacted metal-Si systems as well as the relative movement of the oxygen during silicide formation. The authors systematic study of these four metal-Si systems yielded some interesting results. First, for the three metals Mo, W, and Ti, we observed basically inhibited metal-Si reactions at laser processing conditions that yielded completely reacted metal silicides without implanted oxygen. Second, the evolution from inhibited reactions through partial, metal-rich silicides and finally to completely reacted metal silicide formation at high temperatures was observed and characterized. Last, a distinctly response to the presence of oxygen was observed for the Ti samples as compared to the Mo and W samples.

Lee, H.S.; Wolga, G.J. (School of Electrical Engineering, Cornell Univ., Ithaca, NY (US))

1990-08-01T23:59:59.000Z

404

Fe-Cr-Mo based ODS alloys via spark plasma sintering: A combinational characterization study by TEM and APT  

SciTech Connect

Nanoscale oxides play an important role in oxide dispersion strengthened (ODS) alloys for improved high temperature creep resistance and enhanced radiation damage tolerance. In this study, transmission electron microscopy (TEM) and atom probe tomography (APT) were combined to investigate two novel Fe-16Cr-3Mo (wt.%) based ODS alloys. Spark plasma sintering (SPS) was used to consolidate the ODS alloys from powders that were milled with 0.5 wt.% Y2O3 powder only or with Y2O3 powder and 1 wt.% Ti. TEM characterization revealed that both alloys have a bimodal structure of nanometer-size (~ 100 500 nm) and micron-size grains with nanostructured oxide precipitates formed along and close to grain boundaries with diameters ranging from five to tens of nanometers. APT provides further quantitative analyses of the oxide precipitates, and also reveals Mo segregation at grain boundaries next to oxide precipitates. The alloys with and without Ti are compared based on their microstructures.

Y. Q. Wu; K. N. Allahar; J. Burns; B. Jacques; I Charit; D. P. Butt; J. I. Cole

2013-08-01T23:59:59.000Z

405

Excitons in a mirror: Formation of optical bilayers using MoS{sub 2} monolayers on gold substrates  

SciTech Connect

We report coupling of excitons in monolayers of molybdenum disulphide to their mirror image in an underlying gold substrate. Excitons at the direct band gap are little affected by the substrate whereas strongly bound C-excitons associated with a van-Hove singularity change drastically. On quartz substrates only one C-exciton is visible (in the blue) but on gold substrates a strong red-shifted extra resonance in the green is seen. Exciton coupling to its image leads to formation of a mirror biexciton with enhanced binding energy. Estimates of this energy shift in an emitter-gold system match experiments well. The absorption spectrum of MoS{sub 2} on gold thus resembles a bilayer of MoS{sub 2} which has been created by optical coupling. Additional top-mirrors produce an optical bulk..

Mertens, Jan; Baumberg, Jeremy J., E-mail: jjb12@cam.ac.uk [Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE (United Kingdom); Shi, Yumeng; Yang, Hui Ying, E-mail: yanghuiying@sutd.edu.sg [Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 138682 (Singapore); Molina-Snchez, Alejandro; Wirtz, Ludger [Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg (Luxembourg)

2014-05-12T23:59:59.000Z

406

Kinetics of CO dissociation on Mo(110) and the effects of CO adsorbates  

SciTech Connect

The dissociation reaction of carbon monoxide on clear and modified molybdenum (110) surfaces has been investigated by means of isothermal and temperature-ramped photoelectron spectroscopy (UPS and XPS). In contrast to most previous studies on this or other substrates, both the activation energy E and the prefactor A were determined, with the use of the simplest plausible rate expression K/sub reaction/ = v/N = Aexp(-E/kT), where v is the rate of the reaction and N is the amount of molecular adsorbate. The results show that the reaction poisons itself since the combined effect of atomic (C + O) is to lower the rate constant. Co-absorbed carbon, in either graphitic (site-blocking) or carbidic form, increases the rate constant. Co-adsorbed oxygen decreases the rate constant, and the combined effect of (C + O) is additive in k/sub reaction/. As expected, sulfur poisons the reaction. However, this is not because k/sub reaction/ is reduced but because the desorption probability of undissociated CO increases. Potassium increases the adsorption probability but is not a very effective promoter on Mo(110), probably because CO dissociation precedes desorption on this surface even in the absence of potassium.

Erickson, J.W.

1985-01-01T23:59:59.000Z

407

Coupled spin and valley physics in monolayer MoS2 and group-VI dichalcogenides  

SciTech Connect

We show that inversion symmetry breaking together with spin-orbit coupling leads to coupled spin and valley physics in monolayer MoS2 and group-VI dichalcogenides, making possible controls of spin and valley in these 2D materials. The spin-valley coupling at the valence band edges suppresses spin and valley relaxation, as flip of each index alone is forbidden by the 0.1 eV valley contrasting spin splitting. Valley Hall and spin Hall effects coexist in both electron-doped and hole-doped systems. Optical interband transitions have frequency-dependent polarization selection rules which allow selective photoexcitation of carriers with various combination of valley and spin indices. Photo-induced spin Hall and valley Hall effects can generate long lived spin and valley accumulations on sample boundaries. The physics discussed here provides a route towards the integration of valleytronics and spintronics in multi-valley materials with strong spin-orbit coupling and inversion symmetry breaking.

Xiao, Di [ORNL; Liu, G. B. [University of Hong Kong, The; Feng, wanxiang [Chinese Academy of Sciences; Xu, Xiaodong [University of Washington; Yao, Wang [University of Hong Kong, The

2012-01-01T23:59:59.000Z

408

SEM Characterization of the High Burn-up Microstructure of U-7Mo Alloy  

SciTech Connect

During irradiation, the microstructure of U-7Mo evolves until at a fission density near 5x1021 f/cm3 a high-burnup microstructure exists that is very different than what was observed at lower fission densities. This microstructure is dominated by randomly distributed, relatively large, homogeneous fission gas bubbles. The bubble superlattice has collapsed in many microstructural regions, and the fuel grain sizes, in many areas, become sub-micron in diameter with both amorphous fuel and crystalline fuel present. Solid fission product precipitates can be found inside the fission gas bubbles. To generate more information about the characteristics of the high-fission density microstructure, three samples irradiated in the RERTR-7 experiment have been characterized using a scanning electron microscope equipped with a focused ion beam. The FIB was used to generate samples for SEM imaging and to perform 3D reconstruction of the microstructure, which can be used to look for evidence of possible fission gas bubble interlinkage.

Dennis D. Keiser, Jr.; Jan-Fong Jue; Jian Gan; Brandon Miller; Adam Robinson; Pavel Medvedev; James Madden; Dan Wachs; M. Teague

2014-04-01T23:59:59.000Z

409

Search for neutrinoless double-beta decay of Mo 100 with the NEMO-3 detector  

SciTech Connect

We report the results of a search for the neutrinoless double- decay (0? ) of Mo 100 , using the NEMO-3 detector to reconstruct the full topology of the final state events. With an exposure of 34.7??kgy , no evidence for the 0? signal has been found, yielding a limit for the light Majorana neutrino mass mechanism of T 1/2 (0?)>1.110 24 years (90% C.L.) once both statistical and systematic uncertainties are taken into account. Depending on the nuclear matrix elements this corresponds to an upper limit on the Majorana effective neutrino mass of ?m ? ?<0.30.9??eV (90% C.L.). Constraints on other lepton number violating mechanisms of 0? decays are also given. Searching for high-energy double electron events in all suitable sources of the detector, no event in the energy region [3.210] MeV is observed for an exposure of 47??kgy .

John D. Baker; A. J. Caffrey

2014-06-01T23:59:59.000Z

410

The Influence of Casting Conditions on the Microstructure of As-Cast U-10Mo Alloys: Characterization of the Casting Process Baseline  

SciTech Connect

Sections of eight plate castings of uranium alloyed with 10 wt% molybdenum (U-10Mo) were sent from Y-12 to the Pacific Northwest National Laboratory (PNNL) for microstructural characterization. This report summarizes the results from this study.

Nyberg, Eric A.; Joshi, Vineet V.; Lavender, Curt A.; Paxton, Dean M.; Burkes, Douglas

2013-12-13T23:59:59.000Z

411

Characterization of the interaction layer in diffusion couples U-7 wt.%Mo/Al 6061 alloy at 550 deg. C and 340 deg. C  

SciTech Connect

Solid state reaction between U-7 wt.%Mo and Al 6061 alloys at 550 deg. C and 340 deg. C was characterized in chemical diffusion couples made by Friction Stir Welding. Results were obtained from optical and scanning electron microscopy, electron probe microanalysis and X-ray diffraction. At 550 deg. C the interaction layer in {gamma}U(Mo)/Al 6061 is formed by U(Al,Si){sub 3} phase but when {gamma}U(Mo) cellular decomposition occurs, UAl{sub 3} and Al{sub 43}Mo{sub 4}U{sub 6} also appear in the interaction layer. At 340 deg. C the use of X-ray diffraction with synchrotron radiation made it possible to analyze the interaction layer. It was found that it is only formed by U{sub 3}Si{sub 5} phase with its cell volume enlarged respect to the original one.

Mirandou, M.I., E-mail: mirandou@cnea.gov.ar [Departamento Materiales, GAEN-GIDAT-CNEA, Av. Gral. Paz 1499, B1650KNA, San Martin (Argentina); Arico, S.F.; Balart, S.N. [Departamento Materiales, GAEN-GIDAT-CNEA, Av. Gral. Paz 1499, B1650KNA, San Martin (Argentina); Gribaudo, L.M. [Departamento Materiales, GAEN-GIDAT-CNEA, Av. Gral. Paz 1499, B1650KNA, San Martin (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnologicas, Avda. Rivadavia 1917, C1033AAJ, Buenos Aires (Argentina)

2009-08-15T23:59:59.000Z

412

Crystal structure of La{sub 2}Mo{sub 2}O{sub 9} single crystals doped with bismuth  

SciTech Connect

Precision X-ray diffraction studies of La{sub 2-x}Bi{sub x}Mo{sub 2}O{sub 9} (x = 0.04, 0.06, and 0.18) single crystals are performed. It is found that in the compounds doped with bismuth, analogously with the structure of the metastable {beta}{sub ms} phase of pure La{sub 2}Mo{sub 2}O{sub 9} (LM), the La, Mo1, and O1 atoms deviate from the threefold axis on which they are located in the high-temperature {beta} phase. It is shown that bismuth atoms substitute for part of lanthanum atoms and occupy a position at the threefold axis in the neighborhood of the split lanthanum position. The implantation of bismuth atoms in the LM structure results in the return of a part of the molybdenum atoms to the position at the threefold axis. The occupancy of this position is equal to the occupancy of the bismuth atomic position.

Alekseeva, O. A., E-mail: olalex@ns.crys.ras.ru; Verin, I. A.; Sorokina, N. I.; Krasil'nikova, A. E. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Voronkova, V. I. [Moscow State University, Faculty of Physics (Russian Federation)

2010-07-15T23:59:59.000Z

413

Nonlinear Raman Shift Induced by Exciton-to-Trion Transformation in Suspended Trilayer MoS2  

E-Print Network (OSTI)

Layered two-dimensional (2D) semiconductors such as molybdenum disulfide (MoS2) have recently attracted remarkable attention because of their unique physical properties. Here, we use photoluminescence (PL) and Raman spectroscopy to study the formation of the so- called trions in a synthesized freestanding trilayer MoS2. A trion is a charged quasi-particle formed by adding one electron or hole to a neutral exciton (a bound electron-hole pair). We demonstrate accurate control over the transformation of excitons to trions by tuning the power of the optical pump (laser). Increasing the power of the excitation laser beyond a certain threshold (~ 4 mW) allows modulation of trion-to-exciton PL intensity ratio as well as the spectral linewidth of both trions and excitons. Via a systematic and complementary Raman analysis we disclose a strong coupling between laser induced exciton-to-trion transformation and the characteristic phononic vibrations of MoS2. The onset of such an optical transformation corresponds to the ...

Taghinejad, Hossein; Tarasov, Alexey; Tsai, Meng-Yen; Hosseinnia, Amir H; Campbell, Philip M; Eftekhar, Ali A; Vogel, Eric M; Adibi, Ali

2015-01-01T23:59:59.000Z

414

Investigation of (110)Mo, (110)W monocrystals and Nb polycrystal implanted by oxygen ions and used as TEC electrodes  

SciTech Connect

In an effort to improve efficiency of a thermionic energy converter (TEC), converting thermal power into electric power, there were investigated collectors made of (110)Mo and (110)W monocrystals, and Nb polycrystal, all being implanted by oxygen ions with fluence of 1*10{sup 18} cm{sup {minus}2}. For emitters there were used (110)Mo and (110)W monocrystals, and Nb polycrystal implanted by oxygen ions, respectively. The performance of TEC with implanted electrode material is compared with this of TEC having electrodes of non-implanted materials. It is demonstrated that for emitter temperature range of 1,473 to 1,873 K employment of (110)Mo and (110)W monocrystals, implanted by oxygen ions, for TEC collector allows to increase the specific output power of a converter approximately by a factor of 1.6, and employment of implanted Nb for electrodes -- to increase this value approximately by a factor of 3, as compared with non-implanted electrode materials. The upgraded performance of TEC with implanted electrode materials is caused by the increase of minimum values of the collector working function by {approximately}0.15--0.2 eV as compared with non-implanted collectors, as well as by improvement of emitter emissive and adsorption properties due to oxygen supply from collectors at operating temperatures.

Tsakadze, L.M.

1995-12-31T23:59:59.000Z

415

Surface-Energy-Assisted Perfect Transfer of Centimeter-Scale Monolayer and Few-Layer MoS2 Films onto Arbitrary Substrates  

Science Journals Connector (OSTI)

Surface-Energy-Assisted Perfect Transfer of Centimeter-Scale Monolayer and Few-Layer MoS2 Films onto Arbitrary Substrates ... The different surface energies can drive water molecules to penetrate underneath the film, and this is why our process is termed surface-energy-assisted transfer. ... While the water may have a natural tendency to penetrate between the MoS2 film and the substrate due to different surface energies, the penetration actually cannot start by itself. ...

Alper Gurarslan; Yifei Yu; Liqin Su; Yiling Yu; Francisco Suarez; Shanshan Yao; Yong Zhu; Mehmet Ozturk; Yong Zhang; Linyou Cao

2014-10-27T23:59:59.000Z

416

High-Resolution Neutron Capture and Total Cross-Section Measurements, and the Astrophysical 95Mo(n,gamma) Reaction Rate at s-process Temperatures  

E-Print Network (OSTI)

Abundances of Mo isotopes predicted by stellar models of the s process are, except for 95Mo, in good agreement with data from single grains of mainstream presolar SiC. Because the meteorite data seemed sound and no reasonable modification to stellar theory resulted in good agreement for 95Mo, it has been suggested that the recommended neutron capture reaction rate for this nuclide is 30% too low. Therefore, we have made a new determination of the 95Mo(n,gamma) reaction rate via high-resolution measurements of the neutron-capture and total cross sections of 95Mo at the Oak Ridge Electron Linear Accelerator. These data were analyzed with the R-matrix code SAMMY to obtain parameters for resonances up to En = 10 keV. Also, a small change to our capture apparatus allowed us to employ a new technique to vastly improve resonance spin and parity assignments. These new resonance parameters, together with our data in the unresolved range, were used to calculate the 95Mo(n,gamma) reaction rate at s-process temperatures. We compare the currently recommended rate to our new results and discuss their astrophysical impact.

P. E. Koehler; J. A. Harvey; K. H. Guber; D. Wiarda

2008-09-16T23:59:59.000Z

417

ZrO sub 2 and ZrO sub 2 /SiC particle reinforced-MoSi sub 2 matrix composites  

SciTech Connect

ZrO{sub 2}-MoSi{sub 2} and ZrO{sub 2}/SiC-MoSi{sub 2} composites were fabricated by hot pressing and hot pressing/HIP at 1700{degrees}C. No reactions between ZrO{sub 2}, SiC, and MoSi{sub 2} were observed. An amorphous silica glassy phase was present in all composites. Composites with unstabilized ZrO{sub 2} particles exhibited the highest room temperature fracture toughness, reaching a level three times that of pure MoSi{sub 2}. Both the room temperature toughness and 1200{degrees}C strength of ZrO/{sub 2}SiC-MoSi{sub 2} composites were higher than ZrO{sub 2}-MoSi{sub 2} composites, indicating beneficial effects of combined reinforcement phases. Low strength levels were observed at 1400{degrees}C due to the presence of the silica glassy phase. Elimination of glassy phases and refinements in microstructural homogeneity are processing routes important to the optimization of the mechanical properties of these types of composites. 18 refs., 7 figs.

Petrovic, J.J.; Bhattacharya, A.K.; Honnell, R.E.; Mitchell, T.E. (Los Alamos National Lab., NM (United States)); Wade, R.K. (Arizona Materials Lab., Tucson, AZ (United States)); McCellan, K.J. (Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Materials Science and Engineering)

1991-01-01T23:59:59.000Z

418

A high temperature neutron diffraction study of the double perovskite Ba{sub 2}{sup 154}SmMoO{sub 6}  

SciTech Connect

Ba{sub 2}LnMoO{sub 6} double perovskites have been recently shown to display a wide range of interesting magnetic and structural properties; Ba{sub 2}{sup 154}SmMoO{sub 6} exhibits simultaneous antiferromagnetic order and a Jahn-Teller distortion. Here we report a high temperature neutron diffraction study of Ba{sub 2}{sup 154}SmMoO{sub 6} from 353 to 877 K. The results evidence a tetragonal to cubic phase transition at 423 K. Above this temperature the thermal displacement parameters of the oxygen atoms are modelled anisotropically as a result of a transverse vibration of the bridging oxygen. A smooth increase in the cell parameter a is observed with temperature for Ba{sub 2}{sup 154}SmMoO{sub 6}. - Graphical abstract: The high temperature crystal structure of Ba{sub 2}{sup 154}SmMoO{sub 6} evidencing a transverse oxygen vibration. Highlights: Black-Right-Pointing-Pointer A high temperature neutron diffraction study has been performed on an isotopically enriched sample of Ba{sub 2}{sup 154}SmMoO{sub 6}. Black-Right-Pointing-Pointer A cubic-tetragonal phase transition occurs below 423 K. Black-Right-Pointing-Pointer The thermal displacement parameters of the bridging oxygens are modelled anisotropically. Black-Right-Pointing-Pointer There is a transverse vibration of the bridging oxygen.

Wallace, Thomas K. [Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE (United Kingdom)] [Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE (United Kingdom); Ritter, Clemens [Institut Laue Langevin, 6 rue Jules Horowitz, BP 156, F-38042 Grenoble Cedex 9 (France)] [Institut Laue Langevin, 6 rue Jules Horowitz, BP 156, F-38042 Grenoble Cedex 9 (France); Mclaughlin, Abbie C., E-mail: a.c.mclaughlin@abdn.ac.uk [Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE (United Kingdom)

2012-12-15T23:59:59.000Z

419

Conformal growth of Mo/Si multilayers on grating substrates using collimated ion beam sputtering  

SciTech Connect

Deposition of multilayers on saw-tooth substrates is a key step in the fabrication of multilayer blazed gratings (MBG) for extreme ultraviolet and soft x-rays. Growth of the multilayers can be perturbed by shadowing effects caused by the highly corrugated surface of the substrates, which results in distortion of the multilayer stack structure and degradation of performance of MBGs. To minimize the shadowing effects we used an ionbeam sputtering machine with a highly collimated atomic flux to deposit Mo/Si multilayers on saw-tooth substrates. The sputtering conditions were optimized by finding a balance between smoothening and roughening processes in order to minimize degradation of the groove profile in the course of deposition and at the same time to keep the interfaces of a multilayer stack smooth enough for high efficiency. An optimal value of energy of 200 eV for sputtering Kr{sup +} ions was found by deposition of test multilayers on flat substrates at a range of ion energies. Two saw-tooth substrates were deposited at energies of 200 eV and 700 eV for the sputtering ions. It was found that reduction of the ion energy improved the blazing performance of the MBG and resulted in a 40% gain in the diffraction efficiency due to better replication of the groove profile by the multilayer. As a result of the optimization performed, an absolute diffraction efficiency of 28.8% was achieved for the 2nd blaze order of the MBG with a groove density of 7350 lines/mm at a wavelength of 13.5 nm. Details of the growth behavior of the multilayers on flat and saw-tooth substrates are discussed in terms of the Linear Continuous Model of film growth.

Gawlitza, Peter; Cambie, Rossana; Dhuey, Scott; Gullikson, Eric; Warwick, Tony; Braun, Stefan; Yashchuk, Valeriy; Padmore, Howard

2012-01-23T23:59:59.000Z

420

Removal of Radioactive Nuclides from Mo-99 Acidic Liquid Waste - 13027  

SciTech Connect

About 200 liters highly radioactive acidic liquid waste originating from Mo-99 production was stored at INER (Institute of Nuclear Energy Research). A study regarding the treatment of the radioactive acidic liquid waste was conducted to solve storage-related issues and allow discharge of the waste while avoiding environmental pollution. Before discharging the liquid waste, the acidity, NO{sub 3}{sup -} and Hg ions in high concentrations, and radionuclides must comply with environmental regulations. Therefore, the treatment plan was to neutralize the acidic liquid waste, remove key radionuclides to reduce the dose rate, and then remove the nitrate and mercury ions. Bench tests revealed that NaOH is the preferred solution to neutralize the high acidic waste solution and the pH of solution must be adjusted to 9?11 prior to the removal of nuclides. Significant precipitation was produced when the pH of solution reached 9. NaNO{sub 3} was the major content in the precipitate and part of NaNO{sub 3} was too fine to be completely collected by filter paper with a pore size of approximately 3 ?m. The residual fine particles remaining in solution therefore blocked the adsorption column during operation. Two kinds of adsorbents were employed for Cs-137 and a third for Sr-90 removal to minimize cost. For personnel radiation protection, significant lead shielding was required at a number of points in the process. The final process design and treatment facilities successfully treated the waste solutions and allowed for environmentally compliant discharge. (authors)

Hsiao, Hsien-Ming; Pen, Ben-Li [Chemical Engineering Division, Institute of Nuclear Energy Research, P.O. Box 3-7, Longtan 32546 Taiwan, Republic of China (China)] [Chemical Engineering Division, Institute of Nuclear Energy Research, P.O. Box 3-7, Longtan 32546 Taiwan, Republic of China (China)

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Resonance Effects in Photoemission from TiO2-capped Mo/Si Multilayer Mirrors for Extreme Ultraviolet Applications  

SciTech Connect

In the unbaked vacuum systems of extreme ultraviolet (EUV) lithography steppers, oxide formation and carbon growth on Mo/Si multilayer mirrors (MLMs) are competing processes leading to reflectivity loss. A major contribution to this mirror degradation is a series of surface reactions that are thought to be driven in large part by photoemitted electrons. In this paper, we focus on the resonance effects in photoemission from Mo/Si MLMs protected by thin TiO{sub 2} cap layers. In the vicinity of the resonant energy of the mirror, the energy flux of the EUV radiation forming standing wave oscillates throughout the multilayer stack. As a result, light absorption followed by the emission of photoelectrons becomes a complex process that varies rapidly with depth and photon energy. The electron emission is characterized as a function of the EUV photon energy, the angle of incidence, and the position of the standing wave with respect to the solid/vacuum interface. In our experiments, the position of the standing wave was controlled both by deliberately varying the thickness of the Si terminating layer (of the Mo/Si stack) and by depositing C films of various thicknesses on the TiO{sub 2}. The experimental data are compared with model simulations to examine the changes in photoemission yield due to the presence of carbon and to the changes in the position of the standing wave. We find that carbon deposition can have a dramatic impact on the yield and, therefore, on the rates of electron mediated reactions at the surface.

N Faradzhev; B Yakshinskiy; E Starodub; T Madey; S Hill; S Grantham; T Lucatorto; S Yulin; E Vescovo; J Keister

2011-12-31T23:59:59.000Z

422

Prediction and Monitoring Systems of Creep-Fracture Behavior of 9Cr-1Mo Steels for Teactor Pressure Vessels  

SciTech Connect

A recent workshop on next-generation nuclear plant (NGNP) topics underscored the need for research studies on the creep fracture behavior of two materials under consideration for reactor pressure vessel (RPV) applications: 9Cr-1Mo and SA-5XX steels. This research project will provide a fundamental understanding of creep fracture behavior of modified 9Cr-1Mo steel welds for through modeling and experimentation and will recommend a design for an RPV structural health monitoring system. Following are the specific objectives of this research project: Characterize metallurgical degradation in welded modified 9Cr-1Mo steel resulting from aging processes and creep service conditions. Perform creep tests and characterize the mechanisms of creep fracture process. Quantify how the microstructure degradation controls the creep strength of welded steel specimens. Perform finite element (FE) simulations using polycrystal plasticity to understand how grain texture affects the creep fracture properties of welds. Develop a microstructure-based creep fracture model to estimate RPVs service life . Manufacture small, prototypic, cylindrical pressure vessels, subject them to degradation by aging, and measure their leak rates. Simulate damage evolution in creep specimens by FE analyses. Develop a model that correlates gas leak rates from welded pressure vessels with the amount of microstructural damage. Perform large-scale FE simulations with a realistic microstructure to evaluate RPV performance at elevated temperatures and creep strength. Develop a fracture model for the structural integrity of RPVs subjected to creep loads. Develop a plan for a non-destructive structural health monitoring technique and damage detection device for RPVs.

Potirniche, Gabriel; Barlow, Fred D.; Charit, Indrajit; Rink, Karl

2013-11-26T23:59:59.000Z

423

Development and processing of LEU targets for {sup 99}Mo production-overview of the ANL program  

SciTech Connect

Most of the world`s supply of {sup 99m}Tc for medical purposes is currently produced from the decay of {sup 99}Mo derived from the fissioning of high-enriched uranium (HEU). Substitution of low-enriched uranium (LEU) silicide fuel for the HEU alloy and aluminide fuels used in most current target designs will allow equivalent {sup 99}Mo yields with little change in target geometries. Substitution of uranium metal for uranium oxide films in other target designs will also allow the substitution of LEU for HEU. During 1995, we have continued to study the modification of current targets and processes to allow the conversion from HEU to LEU. A uranium-metal-foil target was fabricated at ANL and irradiated to prototypic burnup in the Indonesian RSG-GAS reactor. Postirradiation examination indicated that minor design modifications will be required to allow the irradiated foil to be removed for chemical processing. Means to dissolve and process LEU foil have been developed, and a mock LEU foil target was processed in Indonesia. We have also developed means to dissolve the LEU foil in alkaline peroxide, where it can be used to replace HEU targets that are currently dissolved in base before recovering and purifying the {sup 99}Mo. We have also continued work on the dissolution of U{sub 3}Si{sub 2} and have a firm foundation on dissolving these targets in alkaline peroxide. The technology-exchange agreement with Indonesia is well underway, and we hope to expand our international cooperations in 1996.

Snelgrove, J.L.; Hofman, G.L.; Wiencek, T.C. [and others

1995-09-01T23:59:59.000Z

424

Order?Disorder Transformation in RuBr3 and MoBr3:? A Two-Dimensional Ising Model  

Science Journals Connector (OSTI)

Order?Disorder Transformation in RuBr3 and MoBr3:? A Two-Dimensional Ising Model ... We suggest that an equal spanning of the metals in the columns, as proposed by previous authors for the hexagonal phase, is never realized in any compound with the TiI3 structure type and present a possible mechanism of the order?disorder phase transition in this class of compounds and discuss it within the frame of a two-dimensional Ising model. ... 5. Ising Model ...

Stefano Merlino; Luca Labella; Fabio Marchetti; Simone Toscani

2004-09-09T23:59:59.000Z

425

Exploring the validity of Z=38 and Z=50 proton closed shells in even-even Mo isotopes  

Science Journals Connector (OSTI)

Energy spectra, B(E2) values, and ratios of the neutron-rich even-even Mo isotopes in the mass 100 region have been investigated in terms of the neutron-proton interacting boson model. Two different approaches were used. The first investigation is based on the validity of the Z=38 subshell closure considering Sr88 as a doubly magic core. In the second calculation Z=50 and N=50 were considered as valid closed shells leading to Sn100 as a core. The results from both calculations are compared with experimental data.

H. Dejbakhsh; D. Latypov; G. Ajupova; S. Shlomo

1992-12-01T23:59:59.000Z

426

Isotopic Mo Neutron Total Cross Section Measurements in the Energy Range 1 to 620 keV  

Science Journals Connector (OSTI)

Abstract A series of new total cross section measurements for the stable molybdenum isotopes of 92,94,95,96,98,100Mo covering the energy range between 1 keV and 620 keV was performed at the Gaerttner LINAC Center at Rensselaer Polytechnic Institute. New high-accuracy resonance parameters were extracted from an analysis of the data using the multilevel R-matrix Bayesian code SAMMY. In the unresolved resonance region, average resonance parameters and fits to the total cross sections were obtained using the Bayesian Hauser-Feshbach statistical model code FITACS.

R. Bahran; D. Barry; G. Leinweber; M. Rapp; R. Block; A. Daskalakis; B. McDermott; S. Piela; E. Blain; Y. Danon

2014-01-01T23:59:59.000Z

427

Interaction between (La, Sr)MnO3 cathode and NiMoCr metallic interconnect with suppressed chromium vaporization for solid oxide fuel cells  

Science Journals Connector (OSTI)

Interaction between (La0.8Sr0.2)0.90MnO3 (LSM) cathode and newly developed NiMoCr metallic interconnect is investigated at 900C under operation conditions of solid oxide fuel cells (SOFCs). The results show that chromium deposition on the LSM cathodes in the presence of NiMoCr interconnect is remarkably reduced as compared to that in the presence of a conventional FeCr metallic interconnect (RA446). In contact with the NiMo-Cr interconnect the overpotential, ?, for the O2 reduction reaction on LSM cathode decreased from 529 to 111mV during the 1200min current passage at 200mA/cm2. In contrast, ? increased from 464 to 561mV for the reaction in the presence of a RA446 interconnect. The decrease in ? clearly indicates that chromium poisoning effect of the NiMoCr interconnect is also significantly suppressed as compared to that with conventional FeCr interconnect materials. The suppressed Cr deposition and poisoning effects observed on the LSM cathodes demonstrate promising potential of the NiMoCr alloy as new interconnect materials with significant suppressed chromium vaporization and deposition for SOFCs.

Xinbing Chen; Bin Hua; Jian Pu; Jian Li; Lan Zhang; San Ping Jiang

2009-01-01T23:59:59.000Z

428

Activation, Heating and Exposure Rates for Mo?99 Experiments with 25?Disk Targets  

SciTech Connect

An MCNPX model of the 25-disk target assembly inside the vacuum cube inside the shielded box was prepared. This was used to calculate heating and photon and neutron fluxes throughout the model. Production rates for photonuclear reaction products were calculated using the photon fluxes and ENDF/B-VII cross sections. Measured isomer to ground state yield ratios were used where available. Where not available the new correlation between spin deficit and isomer to ground state yield ratios presented at AccApp'11 was used. The photonuclear production rates and neutron fluxes were input to CINDER2008 for transmutation calculations. A cross section update file was used to supply (n,n') reactions missing from CINDER2008 libraries. Decay photon spectra produced by CINDER2008 were then used to calculate exposure rates using the MCNPX model. Two electron beam irradiations were evaluated. The first was for a thermal test at 15 MeV with 1300 {micro}A incident on one target end and the second was for a production test at 35 MeV with 350 {micro}A incident on both target ends (700 {micro}A total current on target). For the thermal test 1, 2, 3, 4, 5 and 6 h irradiation times were simulated, each followed by decay time steps out to 42 days. For the production test 6, 12, 18, 24, 30 and 36 h irradiation times were simulated followed by the same decay periods. For all simulations beam FWHMs in x and y were both assumed to be 6 mm. Simulations were run for Mo-100 enriched and natural Mo targets for both tests. It is planned that thermal test will be run for 4 h with natural target disks and production test will be run for 24 h with enriched target disks. Results for these two simulations only are presented in this report. Other results can be made available upon request. Post irradiation exposure rates were calculated at 30 cm distances from left, right, front and back of the following configurations: (1) Shielded box with everything in it (beam pipes, cooling pipes, vacuum cube, target housing weldment and target assembly), (2) Shielded box with everything in it except the target assembly, (3) Shielded box with nothing in it, (4) Target assembly taken outside of shielded box, (5) Target disks in cradle (target assembly with thermocouple weldment and flange removed), (6) Empty cradle, and (7) Target disks alone. Decay photon spectra from the CINDER2008 calculations were used as sources for the exposure rate calculations in the same model used for the flux calculations with beam on. As components were removed to simulate the seven cases considered the material compositions were changed to air and their respective sources were turned off. The MCNPX model geometry is plotted in Figure 1. The left and right detector locations for cases 1, 2 and 3 were 30 cm from the shielded box walls and 30 cm from the beam pipe openings in the left and right sides of the model (they are not in the beam line). A zoomed in plot of the target assembly alone is in Figure 2. Exposure rates for the seven cases are plotted as a function of time after irradiation in Figures 3, 4 and 5. To aid in comparison between the cases, all of these figures have been plotted using the same scale. Figures 3 and 4 are respectively the thermal and production test results for cases 1 through 6. Figure 5 includes case 7 results for both. Differences between cases 1 and 2 for both tests are not statistically significant showing that activation of components other than the target assembly, many of which are also shielding the target assembly, dominates exposure rates outside the shielded box. Case 3 shows the contribution from activation of the shield box itself. In front where shielded box wall is thickest box activation accounts for essentially all of the exposure rate outside. Differences between cases 4 and 5 are also minimal, showing that the contribution to target assembly exposure rates from the thermocouple flange and weldment are small compared to the target disks and cradle. From the numerical results the contribution is about 1%. Results for case 6, the cradle itself, are ini

Kelsey, Charles T. IV [Los Alamos National Laboratory

2012-05-09T23:59:59.000Z

429

Density functional theory study of chemical sensing on surfaces of single-layer MoS{sub 2} and graphene  

SciTech Connect

In this work, density functional theory (DFT) calculations have been used to investigate chemical sensing on surfaces of single-layer MoS{sub 2} and graphene, considering the adsorption of the chemical compounds triethylamine, acetone, tetrahydrofuran, methanol, 2,4,6-trinitrotoluene, o-nitrotoluene, o-dichlorobenzene, and 1,5-dicholoropentane. Physisorption of the adsorbates on free-standing surfaces was analyzed in detail for optimized material structures, considering various possible adsorption sites. Similar adsorption characteristics for the two surface types were demonstrated, where inclusion of a correction to the DFT functional for London dispersion was shown to be important to capture interactions at the interface of molecular adsorbate and surface. Charge transfer analyses for adsorbed free-standing surfaces generally demonstrated very small effects. However, charge transfer upon inclusion of the underlying SiO{sub 2} substrate rationalized experimental observations for some of the adsorbates considered. A larger intrinsic response for the electron-donor triethylamine adsorbed on MoS{sub 2} as compared to graphene was demonstrated, which may assist in devising chemical sensors for improved sensitivity.

Mehmood, F.; Pachter, R., E-mail: ruth.pachter@us.af.mil [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 (United States)

2014-04-28T23:59:59.000Z

430

Preparation of CoMo supported multi-wall carbon nanotube for hydrocracking of extra heavy oil  

Science Journals Connector (OSTI)

Abstract In this study, multi-wall carbon nanotube (MWCNT) supported CoMo nanocatalysts with changes in synthesis steps, one and two-step, were prepared through impregnation to be used in extra heavy oil hydrocracking process. In both of the synthesized nanocatalysts, the Co/Mo weight ratio was 1/3. The nanocatalysts were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and accelerated surface area and porosimetry (ASAP) methods. The results showed that the nanocatalysts prepared through a two-step impregnation method had higher surface area and pore volume than the other synthesized nanocatalysts. The nanocatalysts were used in hydrocracking process under mild operating conditions, 260300C and at H2 initial pressure of 5MPa. Hydrocracking of extra heavy oil was conducted in an autoclave reactor. The results indicated that both nanocatalysts were capable of hydrocracking heavy oil at mild operating conditions. However, the nanocatalysts synthesized through the two-step impregnation exhibited higher performance, better heavy oil to light oil conversion, and better sulfur removal than the other methods. This superiority is due to the nanocatalyst's structure and better distribution of metal clusters on the support.

Mohsen Rahimi Rad; Alimorad Rashidi; Leila Vafajoo; Maryam Rashtchi

2014-01-01T23:59:59.000Z

431

Estimations of Mo X-pinch plasma parameters on QiangGuang-1 facility by L-shell spectral analyses  

SciTech Connect

Plasma parameters of molybdenum (Mo) X-pinches on the 1-MA QiangGuang-1 facility were estimated by L-shell spectral analysis. X-ray radiation from X-pinches had a pulsed width of 1 ns, and its spectra in 23 keV were measured with a time-integrated X-ray spectrometer. Relative intensities of spectral features were derived by correcting for the spectral sensitivity of the spectrometer. With an open source, atomic code FAC (flexible atomic code), ion structures, and various atomic radiative-collisional rates for O-, F-, Ne-, Na-, Mg-, and Al-like ionization stages were calculated, and synthetic spectra were constructed at given plasma parameters. By fitting the measured spectra with the modeled, Mo X-pinch plasmas on the QiangGuang-1 facility had an electron density of about 10{sup 21} cm{sup ?3} and the electron temperature of about 1.2 keV.

Wu, Jian; Qiu, Aici [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China) [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China); State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Li, Mo; Wang, Liangping; Wu, Gang; Ning, Guo; Qiu, Mengtong [State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)] [State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Li, Xingwen [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China)] [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China)

2013-08-15T23:59:59.000Z

432

Trace, isotopic analysis of micron-sized grains -- Mo, Zr analysis of stardust (SiC and graphite grains).  

SciTech Connect

Secondary Neutral Mass Spectrometry using resonant laser ionization can provide for both high useful yields and high discrimination while maintaining high lateral and depth resolutions. An example of the power of the method is measurement of the isotopic composition of Mo and Zr in 1-5 {micro}m presolar SiC and graphite grains isolated from the Murchison CM2 meteorite for the first time. These grains have survived the formation of the Solar System and isotopic analysis reveals a record of the stellar nucleosynthesis present during their formation. Mo and Zr, though present at less than 10 ppm in some grains, are particularly useful in that among their isotopes are members that can only be formed by distinct nucleosynthetic processes known as s-, p-, and r-process. Successful isotopic analysis of these elements requires both high selectivity (since these are trace elements) and high efficiency (since the total number of atoms available are limited). Resonant Ionization Spectroscopy is particularly useful and flexible in this application. While the sensitivity of this t.edmique has often been reported in the past, we focus hereon the very low noise properties of the technique. We further demonstrate the efficacy of noise removal by two complimentary methods. First we use the resonant nature of the signal to subtract background signal. Second we demonstrate that by choosing the appropriate resonance scheme background can often be dramatically reduced.

Pellin, M. J.; Nicolussi, G. K.

1998-02-19T23:59:59.000Z

433

Tunneling spectroscopy of superconducting MoN and NbTiN grown by atomic layer deposition  

SciTech Connect

A tunneling spectroscopy study is presented of superconducting MoN and Nb{sub 0.8}Ti{sub 0.2}N thin films grown by atomic layer deposition (ALD). The films exhibited a superconducting gap of 2?meV and 2.4?meV, respectively, with a corresponding critical temperature of 11.5?K and 13.4?K, among the highest reported T{sub c} values achieved by the ALD technique. Tunnel junctions were obtained using a mechanical contact method with a Au tip. While the native oxides of these films provided poor tunnel barriers, high quality tunnel junctions with low zero bias conductance (below ?10%) were obtained using an artificial tunnel barrier of Al{sub 2}O{sub 3} on the film's surface grown ex situ by ALD. We find a large critical current density on the order of 4??10{sup 6}?A/cm{sup 2} at T?=?0.8T{sub c} for a 60?nm MoN film and demonstrate conformal coating capabilities of ALD onto high aspect ratio geometries. These results suggest that the ALD technique offers significant promise for thin film superconducting device applications.

Groll, Nickolas R., E-mail: ngroll@anl.gov; Klug, Jeffrey A.; Claus, Helmut; Pellin, Michael J.; Proslier, Thomas, E-mail: proslier@anl.gov [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Cao, Chaoyue; Becker, Nicholas G.; Zasadzinski, John F. [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616 (United States); Altin, Serdar [Fen Edebiyat Fakultesi, Fizik Bolumu, Inonu Universitesi, 44280 Malatya (Turkey)

2014-03-03T23:59:59.000Z

434

High sensitivity double beta decay study of 116-Cd and 100-Mo with the BOREXINO Counting Test Facility (CAMEO project)  

E-Print Network (OSTI)

The unique features (super-low background and large sensitive volume) of the CTF and BOREXINO set ups are used in the CAMEO project for a high sensitivity study of 100-Mo and 116-Cd neutrinoless double beta decay. Pilot measurements with 116-Cd and Monte Carlo simulations show that the sensitivity of the CAMEO experiment (in terms of the half-life limit for neutrinoless double beta decay) is (3-5) 10^24 yr with a 1 kg source of 100-Mo (116-Cd, 82-Se, and 150-Nd) and about 10^26 yr with 65 kg of enriched 116-CdWO_4 crystals placed in the liquid scintillator of the CTF. The last value corresponds to a limit on the neutrino mass of less than 0.06 eV. Similarly with 1000 kg of 116-CdWO_4 crystals located in the BOREXINO apparatus the neutrino mass limit can be pushed down to m_nu<0.02 eV.

G. Bellini; B. Caccianiga; M. Chen; F. A. Danevich; M. G. Giammarchi; V. V. Kobychev; B. N. Kropivyansky; E. Meroni; L. Miramonti; A. S. Nikolayko; L. Oberauer; O. A. Ponkratenko; V. I. Tretyak; S. Yu. Zdesenko; Yu. G. Zdesenko

2000-07-11T23:59:59.000Z

435

Prevention of Salt Damage inPrevention of Salt Damage in LimestoneLimestone  

E-Print Network (OSTI)

with a solution of polyacrylic acid (PAA) will reduce the crystallization pressure. #12;Warping Experiment Experiment Sample Size ~ 10 x 2.5 x 1.0 cm 1. Polyacrylic acid (PAA) treatment 2. Dried at 105�C 3 Crystal cP L Ld #12;Warping Sample Sets PAA treatments No PAA 0.75% PAA solution 1.5% PAA solution 3

Petta, Jason

436

Measured bremsstrahlung photonuclear production of 99Mo (99mTc) with 34MeV to 1.7GeV Electrons  

Science Journals Connector (OSTI)

Abstract 99Mo photonuclear yield was measured using high-energy electrons from Laser Plasma Accelerators and natural molybdenum. Spectroscopically resolved electron beams allow comparisons to Monte Carlo calculations using known 100Mo(?,n)99Mo cross sections. Yields are consistent with published low-energy data, and higher energy data are well predicted from the calculations. The measured yield is (15+/?2)10?5 atoms/electron (0.92+/?0.11GBq/?A) for 25mm targets at 33.7MeV, rising to (1391+/?20)10?5 atoms/electron (87+/?2GBq/?A) for 54mm/ 1.7GeV, with peak power-normalized yield at 150MeV.

A.D. Roberts; C.G.R. Geddes; N. Matlis; K. Nakamura; J.P. O'Neil; B.H. Shaw; S. Steinke; J. van Tilborg; W.P. Leemans

2014-01-01T23:59:59.000Z

437

Xanes Study of Hydrothermal Mo-V-Based Mixed Oxide M1-Phase Catalysts for the (Amm)oxidation of propane  

SciTech Connect

The hydrothermal Mo-V-based mixed oxide catalysts possessing the M1-phase structure were investigated by XANES and in situ X-ray diffraction under ambient and dynamic redox conditions in the presence of O{sub 2} and H{sub 2} at 693 K. Under ambient conditions, XANES, with the use of model compounds, suggested oxidation states of Nb, Te, Mo, and V close to 5+, 4+, 6+, and 4+, respectively, in the bulk M1 phase. The oxidation state changes of Nb, Te, and Mo were not detected under the dynamic redox conditions employed, while the pre-edge peak of vanadium in the M1 phase exhibited small, reproducible shifts, suggesting that VO{sub x} is the active catalytic species in the bulk M1-phase catalysts for selective (amm)oxidation of propane.

Shiju, N.R. [University of Cincinnati; Rondinone, Adam Justin [ORNL; Overbury, Steven {Steve} H [ORNL; Mullins, David R [ORNL; Schwartz, Viviane [ORNL; Guliants, Vadim V. [University of Cincinnati

2008-01-01T23:59:59.000Z

438

XANES Study of Hydrothermal Mo-V-Based Mixed Oxide M1-Phase Catalysts for the (Amm)oxidation of Propane  

SciTech Connect

The hydrothermal Mo-V-based mixed oxide catalysts possessing the M1-phase structure were investigated by XANES and in situ X-ray diffraction under ambient and dynamic redox conditions in the presence of O{sub 2} and H{sub 2} at 693 K. Under ambient conditions, XANES, with the use of model compounds, suggested oxidation states of Nb, Te, Mo, and V close to 5+, 4+, 6+, and 4+, respectively, in the bulk M1 phase. The oxidation state changes of Nb, Te, and Mo were not detected under the dynamic redox conditions employed, while the pre-edge peak of vanadium in the M1 phase exhibited small, reproducible shifts, suggesting that VO{sub x} is the active catalytic species in the bulk M1-phase catalysts for selective (amm)oxidation of propane.

Shuju, N.; Rondinone, A; Mullins, D; Schwartz, V; Overbury, S; Gulaints, V

2008-01-01T23:59:59.000Z

439

Xanes Study of Hydrothermal Mo-V-Based Mixed Oxide M1-Phase Catalysts for the (Amm)oxidation of Propane  

SciTech Connect

The hydrothermal Mo-V-based mixed oxide catalysts possessing the M1-phase structure were investigated by XANES and in situ X-ray diffraction under ambient and dynamic redox conditions in the presence of O{sub 2} and H{sub 2} at 693 K. Under ambient conditions, XANES, with the use of model compounds, suggested oxidation states of Nb, Te, Mo, and V close to 5+, 4+, 6+, and 4+, respectively, in the bulk M1 phase. The oxidation state changes of Nb, Te, and Mo were not detected under the dynamic redox conditions employed, while the pre-edge peak of vanadium in the M1 phase exhibited small, reproducible shifts, suggesting that VO{sub x} is the active catalytic species in the bulk M1-phase catalysts for selective (amm)oxidation of propane.

Mullins, David R [ORNL; Overbury, Steven {Steve} H [ORNL; Rondinone, Adam Justin [ORNL; Schwartz, Viviane [ORNL; Guliants, Vadim [ORNL; Shiju, N.R. [University of Cincinnati

2008-01-01T23:59:59.000Z

440

Comparative Study on the Corrosion Resistance of Fe-Based Amorphous Metal, Borated Stainless Steel and Ni-Cr-Mo-Gd Alloy  

SciTech Connect

Iron-based amorphous alloy Fe{sub 49.7}Cr{sub 17.7}Mn{sub 1.9}Mo{sub 7.4}W{sub 1.6}B{sub 15.2}C{sub 3.8}Si{sub 2.4} was compared to borated stainless steel and Ni-Cr-Mo-Gd alloy on their corrosion resistance in various high-concentration chloride solutions. The melt-spun ribbon of this iron-based amorphous alloy have demonstrated a better corrosion resistance than the bulk borated stainless steel and the bulk Ni-Cr-Mo-Gd alloy, in high-concentration chloride brines at temperatures 90 deg. C or higher. (authors)

Lian, Tiangan; Day, Daniel; Hailey, Phillip; Choi, Jor-Shan; Farmer, Joseph [Lawrence Livermore National Laboratory, Livermore, CA, 94550 (United States)

2007-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Development of cryogenic phonon detectors based on CaMoO4 and ZnWO4 scintillating crystals for direct dark matter search experiments  

E-Print Network (OSTI)

This work reports on the development of the first phonon detectors based on CaMoO4 and ZnWO4 scintillating crystals for the CRESST-II experiment. In particular, a novel technique for the production of the ZnWO4 phonon detector with a separate thermometer carrier was investigated. The influence of the thermal and mechanical treatment on the scintillation light output of CaMoO4 and ZnWO4 crystals at room temperature is discussed.

I. Bavykina; G. Angloher; D. Hauff; M. Kiefer; F. Petricca; F. Proebst

2008-11-12T23:59:59.000Z

442

In-situ small-angle X-ray scattering study of the precipitation behavior in a Fe-25 at.%Co-9 at.%Mo alloy  

SciTech Connect

Fe-Co-Mo alloys show extraordinary mechanical properties which make them potential candidates for various high-performance applications. In the present study, for the first time, the precipitation behavior in a Fe-25 at.%Co-9 at.%Mo alloy was studied by small-angle X-ray scattering using high-energy synchrotron radiation. The specimens were isothermally aged in an in-situ furnace. The small-angle X-ray scattering patterns showed scaling behavior and were evaluated by employing a model function from the literature. This approach provides information about the characteristic length scale and the volume fraction of the precipitates in the alloy.

Zickler, Gerald A. [Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, A-8700 Leoben (Austria); Christian Doppler Laboratory for Early Stages of Precipitation, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, A-8700 Leoben (Austria)], E-mail: gerald.zickler@mu-leoben.at; Eidenberger, Elisabeth [Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, A-8700 Leoben (Austria); Leitner, Harald [Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, A-8700 Leoben (Austria); Christian Doppler Laboratory for Early Stages of Precipitation, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, A-8700 Leoben (Austria); Stergar, Erich; Clemens, Helmut [Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, A-8700 Leoben (Austria); Staron, Peter; Lippmann, Thomas; Schreyer, Andreas [GKSS Research Center Geesthacht, Max-Planck-Strasse 1, D-21502 Geesthacht (Germany)

2008-12-15T23:59:59.000Z

443

Processing of LEU targets for {sup 99}Mo production: Dissolution of U{sub 3}Si{sub 2} targets by alkaline hydrogen peroxide  

SciTech Connect

Low-enriched uranium silicide targets designed to recover fission product {sup 99}Mo were dissolved in alkaline hydrogen peroxide (H{sub 2}O{sub 2} plus NaOH) at about 90C. Sintering of matrix aluminum powder during irradiation and heat treatment retarded aluminum dissolution and prevented silicide particle dispersion. Gas evolved during dissolution is suspected to adhere to particles and block hydroxide ion contact with aluminum. Reduction of base concentrations from 5M to O.lM NaOH yielded similar silicide dissolution and peroxide destruction rates, simplifying later processing. Future work in particle dispersion enhancement, {sup 99}Mo separation, and waste disposal is also discussed.

Buchholz, B.A.; Vandegrift, G.F.

1995-09-01T23:59:59.000Z

444

Investigation of the hydroconversion of rancid lard and lard-gas oil mixture on NiMo/Al2O3 catalyst in oxide and in sulphide state  

Science Journals Connector (OSTI)

The necessity to maintain mobility and the increasing energy- and environmentally sound demands necessitated the research, development and utilization of engine fuels from renewable resources. Because of the negative features of the already and generally ... Keywords: NiMo/Al2O3, hydroconversion, hydrogenation, lard, triglyceride

P. Baladincz; J. Hancsk

2011-12-01T23:59:59.000Z

445

L. Briand and C. Williams (Eds.): MoDELS 2005, LNCS 3713, pp. 295-308, 2005. Springer-Verlag Berlin Heidelberg 2005  

E-Print Network (OSTI)

295 L. Briand and C. Williams (Eds.): MoDELS 2005, LNCS 3713, pp. 295-308, 2005. Springer-Verlag Berlin Heidelberg 2005 Replicators: Transformations to Address Model Scalability Jeff Gray1 , Yuehua Lin1 affect the ability to explore design alternatives [9]. A #12;296 Jeff Gray et al. form of alternative

Gray, Jeffrey G.

446

Unveiling Structure-Property Relationships in Sr2Fe1.5Mo0.5O6-, an Electrode Material for Symmetric Solid Oxide Fuel Cells  

E-Print Network (OSTI)

Solid Oxide Fuel Cells Ana B. Munoz-García, Daniel E. Bugaris, Michele Pavone,,§ Jason P. Hodges, Ashfia oxide fuel cell electrode material Sr2Fe1.5Mo0.5O6- (SFMO). Rietveld refinement of powder neutron oxide fuel cells (SOFCs) can convert a wide variety of fuels with simpler and cheaper designs than those

Carter, Emily A.

447

Effects of thermal annealing of thin Au film on Fe40Ni38Mo4B18 in ultrahigh vacuum (UHV)  

Science Journals Connector (OSTI)

Thin films (?20 nm) of Au were vapour-deposited on melt-spun amorphous ribbon specimens of the alloy Fe40Ni38Mo4B18...at room temperature. The specimens were subsequently annealed in UHV (?10?8...mbar) at 723 and...

S. K. Sharma; V. Zaporojtchenko; J. Zekonyte; A. Buettner

448

Propane ammoxidation over MoVTeNbO M1 phase: Density functional theory study of propane oxidative dehydrogenation steps  

Science Journals Connector (OSTI)

Abstract Propane ammoxidation to acrylonitrile catalyzed by the bulk MoVTeNb oxides has received considerable attention because it is more environmentally benign than the current process of propylene ammoxidation and relies on a more abundant feedstock. This process is proposed to consist of a series of elementary steps including propane oxidative dehydrogenation (ODH), ammonia and O2 activation, \\{NHx\\} insertion into C3 surface intermediates, etc. Density functional theory calculations were performed here to investigate the three sequential H abstraction steps that successively convert propane into isopropyl, propene, and ?-allyl on cation sites in the proposed selective and active center present in the ab plane of the MoVTeNbO M1 phase. The initial H abstraction from propane was found to be the rate-limiting step of this process, consistent with both the proposed reaction mechanism for propane ammoxidation on the MoVTeNb oxides and current understanding of V5+ as the active site for alkane activation on V-based oxides. Te=O was found to be significantly more active than V5+=O for the H abstraction from propane, which suggests that the surface and bulk Te species may be different. The role of Mo=O is most likely limited to being an H acceptor from isopropyl to form propene under ammoxidation conditions.

Junjun Yu; Ye Xu; Vadim V. Guliants

2014-01-01T23:59:59.000Z

449

Thermal Modeling for a HVAC Controlled Real-life Yong Fu1, Mo Sha1, Chengjie Wu1, Andrew Kutta1, Anna Leavey2, Chenyang Lu1,  

E-Print Network (OSTI)

Thermal Modeling for a HVAC Controlled Real-life Auditorium Yong Fu1, Mo Sha1, Chengjie Wu1, Andrew consumption in build- ings is heating, ventilation, and air conditioning (HVAC). For an HVAC system to provide, especially in large open spaces. To optimize HVAC control, it is important to establish accurate dynamic

Lu, Chenyang

450

Electronic structure of the 4d transition metal carbides: Dispersed fluorescence spectroscopy of MoC, RuC, and PdC  

E-Print Network (OSTI)

Electronic structure of the 4d transition metal carbides: Dispersed fluorescence spectroscopy of Mo transition metal carbides is also provided. © 2001 American Institute of Physics. DOI: 10.1063/1.1316042 I, and astrochemistry. Within the 4d se- ries, the diatomic transition metal carbides have aroused considerable interest

Morse, Michael D.

451

Characterization and thermal behavior of PrMO{sub 3} (M = Co or Ni) ceramic materials obtained from gelatin  

SciTech Connect

Graphical abstract: The micrograph in figure shows sample calcined at temperature 900 C. The sample exhibits morphology with considerable porosity and the formation of agglomerated nanometric particles. Gelatin provides the system with a large amount of organic matter, which is then removed during calcinations, favoring the appearance of pores in the material. Highlights: ? Oxides with PrNiO{sub 3} and PrCoO{sub 3} were prepared by new method synthesis. ? The gelatin, through its carboxylate groups and amine, is an efficient director. ? The obtained materials have magnetic properties and application in catalysis. ? The decomposition kinetic study of bonding groups of gelatin with metallic ions that takes part in the synthesis of PrMO{sub 3}. -- Abstract: Metal oxides with perovskite-type structure have attracted considerable interest in recent years due to their magnetic and electrical properties, as well as their catalytic activity. In this study, oxides with PrNiO{sub 3} and PrCoO{sub 3} composition were prepared by using gelatin powder as a precursor agent for its use as a catalyst. The powders obtained were calcined at 700 C and 900 C and characterized using the X-ray diffraction, thermal analysis (thermogravimetry and differential thermal analysis), infrared spectroscopy, temperature programed reduction and scanning electron microscopy techniques. Thermogravimetric data using the non-isothermal kinetic models of Flynn and Wall and Model-free Kinetics were used to determine the activation energy to study the decomposition kinetics of the ligand groups with system's metallic ions that takes part in the synthesis of PrMO{sub 3} (M = Ni or Co).

Aquino, F.M., E-mail: flavyma@hotmail.com [Federal University of Rio Grande of Norte, Laboratory of Catalysis and Refining NUPRAR, Av. Senador Salgado Filho, 3000, CEP 59078-970, Natal-RN (Brazil); Melo, D.M.A. [Federal University of Rio Grande of Norte, Laboratory of Catalysis and Refining NUPRAR, Av. Senador Salgado Filho, 3000, CEP 59078-970, Natal-RN (Brazil)] [Federal University of Rio Grande of Norte, Laboratory of Catalysis and Refining NUPRAR, Av. Senador Salgado Filho, 3000, CEP 59078-970, Natal-RN (Brazil); Pimentel, P.M. [Universidade Federal Rural do Semi-rido, Campus Angicos, CEP 59515-000, Angicos-RN (Brazil)] [Universidade Federal Rural do Semi-rido, Campus Angicos, CEP 59515-000, Angicos-RN (Brazil); Braga, R.M.; Melo, M.A.F.; Martinelli, A.E.; Costa, A.F. [Federal University of Rio Grande of Norte, Laboratory of Catalysis and Refining NUPRAR, Av. Senador Salgado Filho, 3000, CEP 59078-970, Natal-RN (Brazil)] [Federal University of Rio Grande of Norte, Laboratory of Catalysis and Refining NUPRAR, Av. Senador Salgado Filho, 3000, CEP 59078-970, Natal-RN (Brazil)

2012-09-15T23:59:59.000Z

452

Single-crystal studies of the Chevrel-phase superconductor La{sub x}Mo{sub 6}Se{sub 8}. 2: Physical and superconducting properties  

SciTech Connect

Single crystals of La{sub x}Mo{sub 6}Se{sub 8} have been grown and some of their magnetic, transport, and superconducting properties studied. The electrical resistivity is characterized by its high value at room temperature, its low residual resistivity ratio, and a pronounced negative curvature at high temperatures. Comparison with the isostructural compounds Mo{sub 3}Se{sub 4} (Mo{sub 6}Se{sub 8}) and LaMo{sub 6}S{sub 8} shows that this behavior is due to structural as well as to extrinsic features (e.g., brittleness due to weak intercluster bondings). The position of the Fermi level near a peak of the density of states plays an important role in the normal-state physical properties, fixing the functional forms of both resistivity and magnetic susceptibility. The superconducting state is mainly characterized by a strong lanthanum concentration dependence of the critical temperature {Tc}, by quite definite granular effects, and by a very high critical field (H{sub c2}(0) {approximately} 55 T). The intragrain critical current density, as estimated by magnetic measurements, is relatively high (4 {times} 10{sup 4} A/cm{sup 2} at zero field and 1.7 K), three times larger than the one obtained for the void compound Mo{sub 3}Se{sub 4}. The fact is due to a higher density of pinning centers in the ternary compound because of microstructural features such as microcracks or crystal defects caused by the extreme brittleness of the crystals.

Pena, O.; Le Berre, F.; Padiou, J.; Marchand, T. [Univ. de Rennes I (France). Chimie du Solide et Inorganique Moleculaire] [Univ. de Rennes I (France). Chimie du Solide et Inorganique Moleculaire; Horyn, R.; Wojakowski, A. [Polish Academy of Sciences, Wroclaw (Poland). Inst. of Low Temperature and Structure Research] [Polish Academy of Sciences, Wroclaw (Poland). Inst. of Low Temperature and Structure Research

1998-03-01T23:59:59.000Z

453

MO. REV. MO. MAGNETIC CLEANLINESS GUIDELINES  

E-Print Network (OSTI)

reduction techniques are furnished. Magnetic field magnitudes at a distance of 12 inches from the center. Miscellaneous Parts 6. Resistors 7. Relays 8. Transistors 9. Wiring A copy of the document is available. D2-11445-1", 5 June 1969. Abstract - The results of magnetic properties tests and a literature

Rathbun, Julie A.

454

Synthesis and development of processes for the recovery of sulfur from acid gases. Part 1, Development of a high-temperature process for removal of H{sub 2}S from coal gas using limestone -- thermodynamic and kinetic considerations; Part 2, Development of a zero-emissions process for recovery of sulfur from acid gas streams  

SciTech Connect

Limestone can be used more effectively as a sorbent for H{sub 2}S in high-temperature gas-cleaning applications if it is prevented from undergoing calcination. Sorption of H{sub 2}S by limestone is impeded by sintering of the product CaS layer. Sintering of CaS is catalyzed by CO{sub 2}, but is not affected by N{sub 2} or H{sub 2}. The kinetics of CaS sintering was determined for the temperature range 750--900{degrees}C. When hydrogen sulfide is heated above 600{degrees}C in the presence of carbon dioxide elemental sulfur is formed. The rate-limiting step of elemental sulfur formation is thermal decomposition of H{sub 2}S. Part of the hydrogen thereby produced reacts with CO{sub 2}, forming CO via the water-gas-shift reaction. The equilibrium of H{sub 2}S decomposition is therefore shifted to favor the formation of elemental sulfur. The main byproduct is COS, formed by a reaction between CO{sub 2} and H{sub 2}S that is analogous to the water-gas-shift reaction. Smaller amounts of SO{sub 2} and CS{sub 2} also form. Molybdenum disulfide is a strong catalyst for H{sub 2}S decomposition in the presence of CO{sub 2}. A process for recovery of sulfur from H{sub 2}S using this chemistry is as follows: Hydrogen sulfide is heated in a high-temperature reactor in the presence of CO{sub 2} and a suitable catalyst. The primary products of the overall reaction are S{sub 2}, CO, H{sub 2} and H{sub 2}O. Rapid quenching of the reaction mixture to roughly 600{degrees}C prevents loss Of S{sub 2} during cooling. Carbonyl sulfide is removed from the product gas by hydrolysis back to CO{sub 2} and H{sub 2}S. Unreacted CO{sub 2} and H{sub 2}S are removed from the product gas and recycled to the reactor, leaving a gas consisting chiefly of H{sub 2} and CO, which recovers the hydrogen value from the H{sub 2}S. This process is economically favorable compared to the existing sulfur-recovery technology and allows emissions of sulfur-containing gases to be controlled to very low levels.

Towler, G.P.; Lynn, S.

1993-05-01T23:59:59.000Z

455

The fault-controlled skarn WMo polymetallic mineralization during the main IndiaEurasia collision: Example from Hahaigang deposit of Gangdese metallogenic belt of Tibet  

Science Journals Connector (OSTI)

Abstract The Hahaigang WMo polymetallic skarn deposit is located in the central-eastern part of Gangdese tectono-magmatic belt in Lhasa terrane, Tibet. The deposit was discovered in 2007 with currently proven 46milliontons of WO3 ores, 12milliontons of Mo ores, and 1.31milliontons of combined CuPbZn ores, at an average grade of 0.20% WO3, 0.07% Mo, 0.026% Cu, 0.49% Pb, and 3.1% Zn. Ore bodies occur in veins or disseminations, and are confined within the NE-striking Dalong fault zone which is hosted by the Lower-Permian Pangna Group of dominantly quartz sandstone and slate. Several granitic plutons are exposed in the area or known from drill-holes. Ages of these granitic plutons are determined by using zircon UPb LAICPMS method. For example, the biotite monzogranite yields a 206Pb/238U207Pb/238U concordia age of 58.660.90Ma and a weighted mean 206Pb/238U age of 57.020.42Ma. The granite porphyry yields a 206Pb/238U207Pb/238U concordia age of 109.18.9Ma and a weighted mean 206Pb/238U age of 114.02.6Ma. The biotite monzogranite yields a weighted mean 206Pb/238U age of 56.11.1Ma. ReOs isochron age of 63.23.2Ma from 5 molybdenite samples collected from the WMo skarn ores is also obtained in this study. The zircon UPb and molybdenite ReOs geochronological data suggest that the WMo mineralization was not temporally associated with any of the dated igneous plutons. However, the molybdenite ReOs age of 63.23.2Ma indicates that the WMo mineralization might have occurred during the main IndiaEurasia collision that was initiated around 65Ma. Microprobe analysis of ilvaite that occurs in two generations in the WMo skarn ores reveals a close relationship to CaFeF-rich hydrothermal fluids, which were probably derived from deeply-seated magmas. We suggest that ascent of the fluids was strictly controlled by the ore-controlling Dalong fault zone, and that chemical interaction and metasomatism between the fluids and the Lower-Permian Pangna quartz-feldspathic host rocks produced the ilvaite and the WMo polymetallic skarn deposit during the main IndiaEurasia collision. Although the majority of the polymetallic deposits in the Gangdese belt are reported to be either pre- or post-main collision, it is evident from this study that the main collision also produced WMo polymetallic mineralization within the belt.

Xiaofeng Li; Chunzeng Wang; Wei Mao; Qinghong Xu; Yaohui Liu

2014-01-01T23:59:59.000Z

456

Electronic mechanism for toughness enhancement in Ti{sub x}M{sub 1-x}N (M=Mo and W)  

SciTech Connect

Toughness, besides hardness, is one of the most important properties of wear-resistant coatings. We use ab initio density-functional theory calculations to investigate the mechanical properties of ternary metal nitrides Ti{sub x}M{sub 1-x}N, with M=Mo and W, for x=0.5. Results show that Mo and W alloying significantly enhances the toughness of TiN. The electronic mechanism responsible for this improvement, as revealed by electronic structure calculations, stems from the changes in charge density induced by the additional transition-metal atom. This leads to the formation of a layered electronic arrangement, characterized by strong, respectively, weak, directional bonding, which enables a selective response to strain, respectively, shear, deformations of the structures and yields up to 60% decrease in C{sub 44} values.

Sangiovanni, D. G.; Chirita, V.; Hultman, L. [Thin Film Physics, Department of Physics, Chemistry and Biology (IFM), Linkoeping University, SE-581 83 Linkoeping (Sweden)

2010-03-01T23:59:59.000Z

457

Investigation of epitaxial arrangement and electronic structure of a La@C82 film grown on an MoS2 surface  

Science Journals Connector (OSTI)

Molecular arrangement and electronic structure of a La@C82 film epitaxially grown on an MoS2 surface have been studied using reflection high-energy electron diffraction and electron energy-loss spectroscopy (EELS). It was revealed that La@C82 molecules form a close-packed hexagonal lattice on a cleaved face of MoS2 with the intermolecular distance of 1.130.03 nm. EELS of the La@C82 film in the valence excitation region indicated seven peaks coming from ???* transitions together with the ?-plasmon excitation. The absence of a distinct band gap means that the La@C82 epitaxial film is not semiconducting, but metallic or semimetallic. From the EELS result, we propose an electronic structure diagram of the La@C82 epitaxial film.

K. Iizumi, Y. Uchino, K. Ueno, A. Koma, K. Saiki, Y. Inada, K. Nagai, Y. Iwasa, and T. Mitani

2000-09-15T23:59:59.000Z

458

STEM HAADF Image Simulation of the Orthorhombic M1 Phase in the Mo-V-Nb-Te-O Propane Oxidation Catalyst  

SciTech Connect

A full frozen phonon multislice simulation of high angle annular dark field scanning transmission electron microscopy (HAADF STEM) images from the M1 phase of the Mo-V-Nb-Te-O propane oxidation catalyst has been performed by using the latest structural model obtained using the Rietveld method. Simulated contrast results are compared with experimental HAADF images. Good agreement is observed at ring sites, however significant thickness dependence is noticed at the linking sites. The remaining discrepancies between the model based on Rietveld refinement and image simulations indicate that the sampling of a small volume element in HAADF STEM and averaging elemental contributions of a disordered site in a crystal slab by using the virtual crystal approximation might be problematic, especially if there is preferential Mo/V ordering near the (001) surface.

D Blom; X Li; S Mitra; T Vogt; D Buttrey

2011-12-31T23:59:59.000Z

459

Thermal Decomposition of Bulk K-CoMoSx Mixed Alcohol Catalyst Precursors and Effects on Catalyst Morphology and Performance  

SciTech Connect

Cobalt molybdenum sulfide-type mixed alcohol catalysts were synthesized via calcination of precipitated bulk sulfides and studied with temperature programmed decomposition analysis. Precursors containing aqueous potassium were also considered. Precipitates thermally decomposed in unique events which released ammonia, carbon dioxide, and sulfur. Higher temperature treatments led to more crystalline and less active catalysts in general with ethanol productivity falling from 203 to 97 g (kg cat){sup -1} h{sup -1} when the calcination temperature was increased from 375 to 500 C. The addition of potassium to the precursor led to materials with crystalline potassium sulfides and good catalytic performance. In general, less potassium was required to promote alcohol selectivity when added before calcination. At calcination temperatures above 350 C, segregated cobalt sulfides were observed, suggesting that thermally decomposed sulfide precursors may contain a mixture of molybdenum and cobalt sulfides instead of a dispersed CoMoS type of material. When dimethyl disulfide was fed to the precursor during calcination, crystalline cobalt sulfides were not detected, suggesting an important role of free sulfur during decomposition.

Menart, M. J.; Hensley, J. E.; Costelow, K. E.

2012-09-26T23:59:59.000Z

460

Writing of nonlinear optical Sm{sub 2}(MoO{sub 4}){sub 3} crystal lines at the surface of glass by samarium atom heat processing  

SciTech Connect

Some glasses such as 21.25Sm{sub 2}O{sub 3}.63.75MoO{sub 3}.15B{sub 2}O{sub 3} (mol %) giving the formation of nonlinear optical Sm{sub 2}(MoO{sub 4}){sub 3} crystals through conventional crystallization in an electric furnace and through continuous-wave Nd: yttrium aluminum garnet (YAG) laser (wavelength: 1064 nm) irradiation (samarium atom heat processing) have been developed. It is proposed from x-ray diffraction analyses, micro-Raman-scattering spectra, and second-harmonic generation measurements that the crystal structure of Sm{sub 2}(MoO{sub 4}){sub 3} formed by the crystallization is the {beta}{sup '}-phase structure with an orthorhombic (noncentrosymmetric) symmetry. The lines consisting of nonlinear optical {beta}{sup '}-Sm{sub 2}(MoO{sub 4}){sub 3} crystals are written at the surface of glasses by YAG laser irradiation (laser power: P=0.4 W, laser scanning speed: S=1-10 {mu}m/s), and, in particular, homogeneous crystal lines are formed at the laser scanning speed of 1 {mu}m/s. Refractive index changes (not crystallization) are also induced by YAG laser irradiation of P=0.4 W and a high laser scanning speed of S=25 {mu}m/s. The crystallization mechanism in the laser-irradiated region has been proposed. The present study demonstrates that the samarium atom heat processing is a technique for the writing of rare earth containing optical nonlinear/ferroelectric crystal lines in glass.

Abe, M.; Benino, Y.; Fujiwara, T.; Komatsu, T.; Sato, R. [Department of Chemistry, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka 940-2188 (Japan); Department of Materials Engineering, Tsuruoka National College of Technology, Tsuruoka 997-8511 (Japan)

2005-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "ls limestone mo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.