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Note: This page contains sample records for the topic "amb amb amb" 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
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1

E-Print Network 3.0 - ambe waste minimization Sample Search Results  

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

precissio, i els coeficients de b amb error maxim 10-3 , com calcularieu amb Matlab una cota per l... cobrint l'interval 1,2, i dibuixar amb ells el graf de f(x) per x...

2

AMB Apparate Maschinenbau GmbH | Open Energy Information  

Open Energy Info (EERE)

AMB Apparate Maschinenbau GmbH AMB Apparate Maschinenbau GmbH Jump to: navigation, search Name AMB Apparate + Maschinenbau GmbH Place Langweid, Germany Zip 86462 Sector Solar Product Germany-based firm that offers automation technology for the solar industry, focussing on wafer handling. Coordinates 48.4907°, 10.85775° 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":48.4907,"lon":10.85775,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

3

E-Print Network 3.0 - americium-beryllium ambe source Sample...  

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

gain. There are two major sources of the performance gain from the AMB... at the first-level connecting the mem- ory controller and Advanced ... Source: Zhu, Zhichun -...

4

AUTONOMOUS MOBILE BUOY (A-M-B) COASTAL & LAGOON: autonomous monitoring and sampling  

E-Print Network (OSTI)

AUTONOMOUS MOBILE BUOY (A-M-B) COASTAL & LAGOON: autonomous monitoring and sampling PI: Stephen, goals and objectives The project objective of this proposal is to develop an Autonomous Mobile Buoy student built instrumentation and autonomous/remotely operated vehicles that will be deployed, monitored

Wood, Stephen L.

5

Characterization of a Sealed Americium-Beryllium (AmBe) Source by Inductively Coupled Plasma Mass Spectrometry  

SciTech Connect

Two Americium-Beryllium neutron sources were dismantled, sampled (sub-sampled) and analyzed via inductively coupled plasma mass spectrometry (ICP-MS). Characteristics such as age since purification, actinide content, trace metal content and inter and intra source composition were determined. The age since purification of the two sources was determined to be 25.0 and 25.4 years, respectively. The systematic errors in the age determination were 4 % 2s. The amount and isotopic composition of U and Pu varied substantially between the sub-samples of Source 2 (n=8). This may be due to the physical means of sub-sampling or the way the source was manufactured. Source 1 was much more consistent in terms of content and isotopic composition (n=3 sub-samples). The Be-Am ratio varied greatly between the two sources. Source 1 had an Am-Be ratio of 6.3 52 % (1s). Source 2 had an Am-Be ratio of 9.81 3.5 % (1s). In addition, the trace element content between the samples varied greatly. Significant differences were determined between Source 1 and 2 for Sc, Sr, Y, Zr, Mo, Ba and W.

James Sommers; Marcos Jimenez; Mary Adamic; Jeffrey Giglio; Kevin Carney

2009-12-01T23:59:59.000Z

6

Estimation of low-level neutron dose-equivalent rate by using extrapolation method for a curie level AmBe neutron source  

Science Journals Connector (OSTI)

Abstract Neutron radiation protection is an important research area because of the strong radiation biological effect of neutron field. The radiation dose of neutron is closely related to the neutron energy, and the connected relationship is a complex function of energy. For the low-level neutron radiation field (e.g. the AmBe source), the commonly used commercial neutron dosimeter cannot always reflect the low-level dose rate, which is restricted by its own sensitivity limit and measuring range. In this paper, the intensity distribution of neutron field caused by a curie level AmBe neutron source was investigated by measuring the count rates obtained through a 3He proportional counter at different locations around the source. The results indicate that the count rates outside of the source room are negligible compared with the count rates measured in the source room. In the source room, 3He proportional counter and neutron dosimeter were used to measure the count rates and dose rates respectively at different distances to the source. The results indicate that both the count rates and dose rates decrease exponentially with the increasing distance, and the dose rates measured by a commercial dosimeter are in good agreement with the results calculated by the Geant4 simulation within the inherent errors recommended by ICRP and IEC. Further studies presented in this paper indicate that the low-level neutron dose equivalent rates in the source room increase exponentially with the increasing low-energy neutron count rates when the source is lifted from the shield with different radiation intensities. Based on this relationship as well as the count rates measured at larger distance to the source, the dose rates can be calculated approximately by the extrapolation method. This principle can be used to estimate the low level neutron dose values in the source room which cannot be measured directly by a commercial dosimeter.

Gang Li; Jiayun Xu; Jie Zhang

2015-01-01T23:59:59.000Z

7

La universitat amb ms mobilitat  

E-Print Network (OSTI)

lloc, un any més, al Palau de la Música Catalana. Més de mil cinc-cents titulats van desfi- lar per l

Geffner, Hector

8

Microsoft Word - AMB-2012_Final.docx  

Office of Legacy Management (LM)

Ambrosia Lake, New Mexico Ambrosia Lake, New Mexico Page 1-1 1.0 Annual Inspection of the Ambrosia Lake, New Mexico, UMTRCA Title I Disposal Site 1.1 Compliance Summary The Ambrosia Lake, New Mexico, Uranium Mill Tailings Radiation Control Act (UMTRCA) Title I Disposal Site was inspected on August 21, 2012. The disposal cell was in excellent condition. No maintenance needs or cause for a follow-up or contingency inspection was identified. Numbers in the left margin of this report refer to items summarized in the "Executive Summary" table. 1.2 Inspection Requirements Requirements for the long-term surveillance and maintenance of the site are specified in the Long-Term Surveillance Plan for the Ambrosia Lake, New Mexico, Disposal Site (DOE/AL/62350-211, Rev. 1, U.S. Department of Energy [DOE], July 1996; LTSP) and in

9

DOE - Office of Legacy Management -- AMB  

Office of Legacy Management (LM)

New Mexico New Mexico Ambrosia Lake, New Mexico, Disposal Site This Site All Sites All LM Quick Search Key Documents and Links All documents are Adobe Acrobat files. pdf_icon Key Documents Fact Sheet 2012 Annual Site Inspection and Monitoring Report for Uranium Mill Tailings Radiation Control Act Title I Disposal Sites-Ambrosia Lake, New Mexico, Disposal Site Data Validation Package-November 2012 Groundwater Sampling Ground Water Compliance Action Plan Long-Term Surveillance Plan for the Ambrosia Lake, New Mexico, Disposal Site Please be green. Do not print these documents unless absolutely necessary. Request a paper copy of any document by submitting a Document Request. All Site Documents All documents are Adobe Acrobat files. pdf_icon Fact Sheet Annual Inspection Report

10

Microsoft Word - AMB 2008-final.doc  

Office of Legacy Management (LM)

Ambrosia Lake, New Mexico Ambrosia Lake, New Mexico Page 1-1 1.0 Ambrosia Lake, New Mexico, Disposal Site 1.1 Compliance Summary The Ambrosia Lake, New Mexico, Uranium Mill Tailings Radiation Control Act (UMTRCA) Title I Disposal Site was inspected on August 27, 2008. The disposal cell and all associated surface water diversion and drainage structures were in excellent condition and functioning as designed. The site access road, owned by Rio Algom Mining LLC (Rio Algom), was temporarily realigned in 2006 to allow for construction of a waste haul road; waste hauling operations are complete, and the site access road is scheduled for restoration in 2009. Slight settlement may be recurring at a location on the cell cover that was repaired in 2005; this location will continue to

11

Shielding of a 3600 curie AmBe source  

E-Print Network (OSTI)

by detector j, R(j, E) is the response response function of detector j vith respect to neutron energy, a(E) is the energy dependent neutron flux, and E2-El is the energy range of interest. Converting equation (20) into a matrix form results in (Schlapper... are the saae as for flux, neutrons/cm -sec. The parameter 2 Dg is the group diffusion coefficient. The aultigroup fora of the transport equation given in equation (6) can be integrated over all angles to obtain the balance equation given by DEL Jg(r) + Etg...

Grimes, Mary Jeanine

2012-06-07T23:59:59.000Z

12

E-Print Network 3.0 - ambe source neutron Sample Search Results  

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

IN PHYSICS RESEARCH Section A Theory of neutron fluctuations in source-driven subcritical systems... source 1. Introduction ... Source: Pzsit, Imre - Department of Reactor...

13

E-Print Network 3.0 - am-be isotopic neutron Sample Search Results  

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

2106533431 Large Scale Experimental Facilities at RRL Nuclear Research Reactor 5 MW power Neutron... Scattering Facilities ... Source: National Center for Scientific Research...

14

Regulation of motility, the cell cycle, and magnetosome formation in Magnetospirillum magneticum AMB-1  

E-Print Network (OSTI)

r epair enzyme hypot het ical pr ot ein Nif Q pr ot ein f erhypot het ical pr ot ein Nif X pr ot ein nit r ogenasexU-like pr ot ein put at ive nif Z pr ot ein hypot het ical

Greene, Shannon Elizabeth

2012-01-01T23:59:59.000Z

15

E-Print Network 3.0 - ambs biography lhc Sample Search Results  

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

far).... the top quark... (Bs oscillations) The LHC will discover (perhaps)... the Higgs boson supersymmetric particles ... Source: Schmitt, Michael - Department of Physics and...

16

Study of neutron spectra emitted by moderated 241AmBe source for various moderating materials byusing simulation technique  

Science Journals Connector (OSTI)

......light water, heavy water, graphite, 56Fe...sources of neutrons, reactors, particle accelerators...compared with nuclear reactors and neutron generators...polyethylene, light water and heavy water have been...in FLAIR (FLUKA Advanced Interface) on a......

N. Sujatha Kumari; V. Sathian; S. S. Ghodke; Yashoda Singh; A. K. Mahant; S. Ganesan

2012-06-01T23:59:59.000Z

17

E-Print Network 3.0 - am-be pgnaa set-up Sample Search Results  

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

Reynolds Manufacturing Company ** Reynolds Manufacturing company is looking for a CNC Programmer and Set up person. For details see Summary: is looking for a CNC Programmer...

18

Bus interurb amb parada a la UIB Dues lnies interurbanes disposen de parada a la UIB: la Palma Port de Sller i la  

E-Print Network (OSTI)

­ Port de Sóller i la Palma ­ Estellencs. Resum de les dades de què disposem fins ara dels dos darrers,00 11 0,48 Universitat a Sóller 31 57 1,84 13 0,42 Universitat a Port de Sóller 36 21 0,58 0 0,00 Total 20092008 Demanda Línia IB-9 o L-210 Palma - Port de Sóller 2008 - 2009 #12;

Oro, Daniel

19

Anlisi de dades experimentals Salvador Balle L'objectiu fonamental d'aquest text s presentar de manera resumida i breu, amb  

E-Print Network (OSTI)

#12;Anàlisi de dades experimentals Salvador Bal·le L'objectiu fonamental d'aquest text és presentar en- coratjament per a elaborar-lo. Esporles, Agost 2006 #12;Anàlisi de dades experimentals Salvador ! " $ ! , * , % . ' & 4 5 6 7 . 8 2 -' ( 9 : / . #12;Anàlisi de dades experimentals Salvador Bal·le 0. Introducció Des de

Colet, Pere

20

E-Print Network 3.0 - abwr una opcion Sample Search Results  

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

Objectius Familiaritzar-se amb les diverses opcions... . Realitzaci del meu primer video-tutorial o Com gravar udio i vdeo amb Screenflow o Opcions del Men...

Note: This page contains sample records for the topic "amb amb amb" 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

Memria del Pla d'actuacions per a l'any 2011 1. Introducci  

E-Print Network (OSTI)

amb la consolidació dels sistemes de qualitat i medi ambient d'acord amb les normes ISO 9001:2008 i ISO 14001:2004. A tal

Oro, Daniel

22

E-Print Network 3.0 - automanejo del asma Sample Search Results  

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

del V... cada Dia, organitzat pel SAC, juntament amb la Reial Acadmia de Medicina i l'Associaci Balear d'Asma... 'educaci teraputica - Asma, activitat fsica i...

23

E-Print Network 3.0 - alcance del procedimiento Sample Search...  

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

ResumenResumen Summary: Plan GDP hasta la disposicin final de sus desechos. Alcance: Seguimiento a Recomendaciones del Comit... por el MPPpAmb Elaboracin, Revisin y...

24

The Search for Dark Matter in XENON100 using a Two-Dimensional Profile Likelihood Analysis  

E-Print Network (OSTI)

for the simulated Americium Beryllium neutron source fromwere performed using an Americium-Beryllium (AmBe) source.input energy spectrum from Americium Beryllium decays (ISO

Lung, Kevin J.

2013-01-01T23:59:59.000Z

25

E-Print Network 3.0 - adherencia al uso Sample Search Results  

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

de la figura de l'apartat anterior en fer-la girar al voltant de l... un subconjunt arc-connex de U que te al menys un punt amb comu amb U0, el propi x. Pero, U0 es un...

26

THE UNIVERSITY OF DDeeppaarrttmmeenntt ooff  

E-Print Network (OSTI)

DiRienzo, Chair CLSC 424 Matthew Stephens CLSC 422 Kevin White KCBD 10100 Elizabeth McNally AMB O603.edu Lamar, Kay-Marie McNally AMB O-603 kaymarie@uchicago.edu Mika, Katelyn Di Rienzo unaffiliated kmmika@uchicago.edu Pavlovic,Bryan McNally unaffiliated bjp@uchicago.edu Stein, Michelle Ober CLSC 431 mstein3@uchicago

Ober, Carole

27

Practical implications of neutron survey instrument performance  

Science Journals Connector (OSTI)

......252Cf 241Am-Be GCR PWR Spent fuel flask PuO2 store Fuel processing R H (10) (90...incidence through the electronics and batteries, and the connections to the detector...252Cf 241Am-Be GCR PWR Spent fuel flask PuO2 store Fuel processing......

R. J. Tanner; D. T. Bartlett; L. G. Hager; L. N. Jones; C. Molinos; N. J. Roberts; G. C. Taylor; D. J. Thomas

2004-08-01T23:59:59.000Z

28

Influence of alkaline (pH 8.312.0) and saline solutions on chemical, mineralogical and physical properties of two different bentonites  

Science Journals Connector (OSTI)

...are intended to be used as buffer and backfill materials. Construction of...Physical Study of Potential Buffer and Backfill Materials from AMB Test Package...M.J. , editor (1987) A Handbook of Determinative Methods in...

T. Heikola; S. Kumpulainen; U. Vuorinen; L. Kiviranta; P. Korkeakoski

29

Prctica 2. Anlisi descriptiva univariable: variables qualitatives  

E-Print Network (OSTI)

nominal SEXO. Codificada de tipus "numèrica" amb valors 1 i 2. Aquests valors s'etiqueten amb: 1 `Hombre": (1) Seleccionem la variable sexo i la col·loquem al requadre de "Variables". D'aquesta manera obtenim: Frecuencias [Conjunto_de_datos1] C:\\Archivos de programa\\SPSS\\GSS93 reducido.sav Estadísticos sexo Sexo del

Castellana, Natàlia

30

Prctica 2. Anlisi descriptiva univariable: variables qualitatives  

E-Print Network (OSTI)

nominal SEXO. Codificada de tipus "numèrica" amb valors 1 i 2. Aquests valors s'etiqueten amb: 1 `Hombre) Seleccionem la variable sexo i la col·loquem al requadre de "Variables". D'aquesta manera obtenim la taula de Estadísticos Sexo del entrevistado 1500 0 2 Válidos Perdidos N Moda sexo Sexo del entrevistado 641 42,7 42,7 42

Castellana, Natàlia

31

Mathematisch-Naturwissenschaftliche Fakultt Erste nderung der  

E-Print Network (OSTI)

Prüfungsordnung für den Masterstudiengang Chemie (AMB Nr. 43/2009) Herausgeber: Der Präsident der Humboldt Chemie (AMB Nr. 43/2009) Gemä? § 17 Abs. 1 Ziffer 3 der Verfassung der Hum- boldt-Universität zu Berlin 2013 die erste ?nderung der Stu- dienordnung für den Masterstudiengang Chemie (Amtli- ches

Röder, Beate

32

Scaling and mechanics of carnivoran footpads reveal the principles of footpad design  

Science Journals Connector (OSTI)

...similarity between effective foot mass and body mass. For these...scales in proportion to effective foot mass and body mass. If safety...relationships are described using a power function, Y = aMb , in its...members exhibit digitigrade foot posture. In digitigrady, the...

2010-01-01T23:59:59.000Z

33

Track-etched detectors for the dosimetry of the radiation of cosmic origin  

Science Journals Connector (OSTI)

......France) BN 1 (natural boron) or BE10 (enriched in...and AmBe andor 252Cf isotope neutron sources are used...used. The method allows determination of H (10) for 252Cf...polycarbonate detector and boron-10 radiator. Nucl......

F. Spurny; K. Turek

2004-07-01T23:59:59.000Z

34

Notcies i esdeveniments Curs d'Estiu: Reptes de la Medicina Reproductiva en el Segle XXI (Publicada 16/06/2014)  

E-Print Network (OSTI)

Notícies i esdeveniments Curs d'Estiu: Reptes de la Medicina Reproductiva en el Segle XXI (Publicada 16/06/2014) La Càtedra de Medicina de la Reproducció juntament amb l'Institut Bernabeu organitzen el curs d'estiu "Reptes de la medicina reproductiva en el segle XXI". El curs, dirigit a estudiants

Escolano, Francisco

35

Radiation Source Replacement Workshop  

SciTech Connect

This report summarizes a Radiation Source Replacement Workshop in Houston Texas on October 27-28, 2010, which provided a forum for industry and researchers to exchange information and to discuss the issues relating to replacement of AmBe, and potentially other isotope sources used in well logging.

Griffin, Jeffrey W.; Moran, Traci L.; Bond, Leonard J.

2010-12-01T23:59:59.000Z

36

1 Copyright 2010 by ASME ROLE OF AUTOMATED SYMBOLIC GENERATION OF EQUATIONS OF MOTION IN  

E-Print Network (OSTI)

-efficient simulation models are vital for rapid design-refinement through iterative simulation- based parametric 1 Copyright © 2010 by ASME ROLE OF AUTOMATED SYMBOLIC GENERATION OF EQUATIONS OF MOTION-Multi-Body-Systems (AMBS) used in various applications. There is also increased interest in the model-based design

Krovi, Venkat

37

Regulation and large motion tracking for active magnetic bearing system using sliding mode control  

E-Print Network (OSTI)

tracking (RMT) and axial motion tracking (AMT). For RMT, the whirling and conical motions are used as desired tracking trajectories. For AMT, Albemet and Steel are used as the material of rotor. MATLAB/SIMULINK software is used to simulate both the AMB...

Sun, Guangyoung

2012-06-07T23:59:59.000Z

38

PROBLEMES ENERGIES RENOVABLES. INTRODUCCIO Heu de fer servir estimacions raonables.  

E-Print Network (OSTI)

PROBLEMES ENERGIES RENOVABLES. INTRODUCCI´O Heu de fer servir estimacions raonables. PROBLEAM 1 ­Exhauriment de recursos. Consum exponencial. Les reserves de Gas Natural s'han estimat en 6040 trillions de`olica ´es la que t´e un creixement m´es important de les renovables. Amb el ritme de creixement actual quan

Batiste, Oriol

39

Children as vulnerable populations in radiological/nuclear events: discussion scenarios  

Science Journals Connector (OSTI)

......approximately half the number of adults. The device is not discovered by anyone and detonates...Scenario 3-241AmBe radiological dispersion device In this scenario, it was recognised that...children who happen to be watching or listening to media reports as they will likely take......

Matthew Rodrigues; Joseph Chaput; Christopher Bellman; Tom Cousins

2010-11-01T23:59:59.000Z

40

CONTRIBUTIONS to SCIENCE, 7 (1): 4549 (2011) Institut d'Estudis Catalans, Barcelona  

E-Print Network (OSTI)

atmosfera) i amb factors naturals (erupcions volcàniques, vari acions de la irradiació solar, lesS.Bradley Climate System Research Center, Department of Geosciences, University of Massachusetts, Amherst * Based.S. Bradley, Climate System Research Center, Dept. of Geosciences, University of Massachusetts, Amherst, MA

Bradley, Raymond S.

Note: This page contains sample records for the topic "amb amb amb" 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

Quasi-exactly solvable quartic: elementary integrals and asymptotics  

E-Print Network (OSTI)

Apr 20, 2011 ... Polynomials Qn+1 are fundamental for our subject, but little is known ..... where ad(?) > 0 does not depend on b, P0(z,b) = am(b,0)zm + ..., where ... [1] M. Abramowitz and I. Stegun, Handbook of mathematical functions with formulas ... [

2011-04-20T23:59:59.000Z

42

l'istituzio alla redazi  

E-Print Network (OSTI)

/02/2014 rca nell'amb ell'adattamen Dar es Salaam A ento di Inge ne di racc urbanistici dinanza, tut per l cli a ile, Edile e A oni per l'in ali di Dar he siano in erritorio L'e missione esam l presente av imatico nei Ambientale ntegrazione es Salaam, possesso di equivalenza minatrice. I vviso. 'Ingegneria

Guidoni, Leonardo

43

A Structural Model Guide For Geothermal Exploration In Ancestral Mount Bao,  

Open Energy Info (EERE)

Model Guide For Geothermal Exploration In Ancestral Mount Bao, Model Guide For Geothermal Exploration In Ancestral Mount Bao, Leyte, Philippines Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Structural Model Guide For Geothermal Exploration In Ancestral Mount Bao, Leyte, Philippines Details Activities (0) Areas (0) Regions (0) Abstract: The Tongonan Geothermal Field is the largest producing geothermal field in the Philippines having an installed capacity of 700 MW. It hosts several major power plants that tap geothermal power from the northern flank of the eroded Ancestral Mount Bao (AMB) volcano in Leyte Island, Philippines. A structural model guide is presented to delineate exploration targets in other flanks of the 1200 km2 area of the AMB volcano. If applied, the model constrains the coverage of geothermal exploration to

44

Characteristics of the Neutron Irradiation Facilities of the PSI Calibration Laboratory  

SciTech Connect

The neutron radiation fields of the Calibration Laboratory at Paul Scherrer Institute (PSI) are traceable to the national standards of the Physikalisch-Technische Bundesanstalt (PTB) in Germany. A Berthold LB6411 neutron dose rate meter for neutron radiation is used as a secondary standard. Recently, a thorough characterization of the neutron irradiation fields of the {sup 241}Am-Be and {sup 252}Cf sources by means of reference measurements and a detailed MCNPX simulation of the irradiation facility has been initiated. In this work, the characteristics of the neutron radiation fields are summarized and presented together with model equations and an uncertainty analysis. MCNPX results are shown for the {sup 241}Am-Be source. A comparison of measured and simulated data shows an excellent agreement. From the simulation, valuable information about the neutron fields like the contribution of scattered neutrons in the fields and the energy spectra could be obtained.

Hoedlmoser, H.; Schuler, Ch.; Butterweck, G.; Mayer, S. [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland)

2011-12-13T23:59:59.000Z

45

Microsoft Word - 11114180 DVP  

Office of Legacy Management (LM)

Ambrosia Lake, New Mexico, Ambrosia Lake, New Mexico, Disposal Site February 2012 LMS/AMB/S01111 This page intentionally left blank U.S. Department of Energy DVP-November 2011, Ambrosia Lake, New Mexico February 2012 RIN 11114180 Page i Contents Sampling Event Summary ...............................................................................................................1 Ambrosia Lake, New Mexico, Disposal Site Sample Location Map ..............................................3 Data Assessment Summary ..............................................................................................................5 Water Sampling Field Activities Verification Checklist .............................................................7 Laboratory Performance Assessment ..........................................................................................9

46

Microsoft Word - RIN 10113425 DVP  

Office of Legacy Management (LM)

Ambrosia Lake, New Mexico, Ambrosia Lake, New Mexico, Disposal Site February 2011 LMS/AMB/S01110 This page intentionally left blank U.S. Department of Energy DVP-November 2010, Ambrosia Lake, New Mexico February 2011 RIN 10113425 Page i Contents Sampling Event Summary ...............................................................................................................1 Ambrosia Lake, New Mexico, Disposal Site Sample Location Map ..............................................3 Data Assessment Summary ..............................................................................................................5 Water Sampling Field Activities Verification Checklist .............................................................7 Laboratory Performance Assessment ..........................................................................................9

47

Microsoft Word - RIN 12114946 DVP  

Office of Legacy Management (LM)

Groundwater Sampling at the Groundwater Sampling at the Ambrosia Lake, New Mexico, Disposal Site February 2013 LMS/AMB/S01112 This page intentionally left blank U.S. Department of Energy DVP-November 2012, Ambrosia Lake, New Mexico February 2013 RIN 12114946 Page i Contents Sampling Event Summary ...............................................................................................................1 Ambrosia Lake, New Mexico, Disposal Site Sample Location Map ..............................................3 Data Assessment Summary ..............................................................................................................5 Water Sampling Field Activities Verification Checklist .............................................................7

48

The prototype of a detector for monitoring the cosmic radiation neutron flux on ground  

SciTech Connect

This work presents a comparison between the results of experimental tests and Monte Carlo simulations of the efficiency of a detector prototype for on-ground monitoring the cosmic radiation neutron flux. The experimental tests were made using one conventional {sup 241}Am-Be neutron source in several incidence angles and the results were compared to that ones obtained with a Monte Carlo simulation made with MCNPX Code.

Lelis Goncalez, Odair; Federico, Claudio Antonio; Mendes Prado, Adriane Cristina; Galhardo Vaz, Rafael; Tizziani Pazzianotto, Mauricio [Instituto de Estudos Avancados - IEAv/DCTA - Sao Jose dos Campos, SP (Brazil); Semmler, Renato [Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP - Sao Paulo, SP (Brazil)

2013-05-06T23:59:59.000Z

49

MOBILITA' INTERNAZIONALE a.a. 2012/2013 SECONDO BANDO  

E-Print Network (OSTI)

DE SEVILLA ELN, FIS, AER, AUT, ELT, ENG, MEC, MAT, AMB, MTM, GES, TLC 3° L o 1° LM F CERGY01 ECOLE ?COLE CENTRALE MARSEILLE MTM, FIS, GES, INF, MEC 2° L F LYON11 ?COLE CENTRALE DE LYON MTM, FIS, GES, INF, MEC 2° L F LILLE14 ?COLE CENTRALE DE LILLE MTM, FIS, GES, INF, MEC 2° L F NANTES07 ?COLE CENTRALE DE

50

Effects of dietary phosphorus and high ambient temperature on egg shell quality in hens  

E-Print Network (OSTI)

EFFECTS OF DIETARY PHOSPHORUS AND HIG11 AMB1ENT TEMPERATURE ON EGG SHELL QUALITY IN HENS A Thesis by CHRISTOPHER ANTHONY BAI1EEY Submitted to the Graduate College of Texas A@I University in Partial fuI. fillme ~t of the requirement... for the degree of F1ASTER OF SCIENCE May 19 79 Major Subject: Poultry Science EFFECTS OF DIETARY PHOSPHORUS AND HIGH AMBIENT TEMPERATURE ON EGG SHELL QUALITY IN HENS A Thesis by CHRISTOPHER ANTHONY BAILEY Approved as to style and content by; ( hairm...

Bailey, Christopher Anthony

1979-01-01T23:59:59.000Z

51

Maayamma Nannu Ragam: Nata Kuranji {28th Mela Janyam}  

E-Print Network (OSTI)

AnandA AnandA ambA (svara) mA ma ma ga sa *ni *dha *ni sa ri ga mA ma ma ga ma ni dha mA ma ma , ni dha ni sA* ri* ga* mA* ma* ga* ma* ri* sA* ni sa* sA* ni dha ma ma , ga sa *nI *dha *ni sa *dha *dha *pa *dha/06/syama-sastry-kriti-mayamma- nannu-raga.html) O My ("mA") Mother ("ammA") ("mAyammA")! O Mother ("amm

Kalyanaraman, Shivkumar

52

Groningen 2nd phase compression project  

Science Journals Connector (OSTI)

ABSTRACT A Double End Driven Compression train with Active Magnetic Bearings (AMBs), a novel concept on its own, has been chosen as the solution for the Groningen 2nd phase compression project. A development assurance program was followed by a team comprising of both Siemens and Shell specialists with the intent of ensuring that technical risks were identified and addressed as far as possible prior to field implementation. The paper will describe The concept evaluation and selection The creation of the development programme to assess technical risks Technical challenges and learnings Current status of the development and design maturity

E. Liow; H. Goorhuis

2014-01-01T23:59:59.000Z

53

Nuclear radiation detectors based on a matrix of ion-implanted p-i-n diodes on undoped GaAs epilayers  

SciTech Connect

Samples of nuclear detectors which represent matrices of p-i-n diodes were fabricated based on undoped gallium arsenide epitaxial layers by ion implantation technology. The detectors have a size of the active area of 0.4 Multiplication-Sign 0.4 and 0.9 Multiplication-Sign 0.9 cm{sup 2}. Electrical characteristics of fabricated detectors and results of measurements of fast neutrons spectra of {sup 241}Am-Be source by the recoil protons method are discussed.

Baryshnikov, F. M.; Britvich, G. I.; Chernykh, A. V.; Chernykh, S. V.; Chubenko, A. P.; Didenko, S. I.; Koltsov, G. I. [National University of Science and Technology 'MISIS', Leninskiy prospect 4, 119049 Moscow (Russian Federation); Institute for High Energy Physics, Polshhad nauki 1, 142281 Protvino (Russian Federation); National University of Science and Technology 'MISIS', Leninskiy prospect 4, 119049 Moscow (Russian Federation); P.N. Lebedev Physical Institute of the RAS, Leninskiy prospect 53, 119991 Moscow (Russian Federation); National University of Science and Technology 'MISIS', Leninskiy prospect 4, 119049 Moscow (Russian Federation)

2012-11-06T23:59:59.000Z

54

Disturbance Rejection Control of an Electromagnetic Bearing Spindle  

SciTech Connect

The force exerted on the rotor by an active magnetic bearing (AMB) is determined by the current flow in the magnet coils. This force can be controlled very precisely, making magnetic bearings a potential benefit for grinding, where cutting forces act as external disturbances on the shaft, resulting in degraded part finish. It is possible to achieve precise shaft positioning, reduce vibration of the shaft caused by external disturbances, and even damp out resonant modes. Adaptive control is an appealing approach for these systems because the controller can tune itself to account for an unknown periodic disturbance, such as cutting or grinding forces, injected into the system. In this paper the authors show how one adaptive control algorithm can be applied to an AMB system with a periodic disturbance applied to the rotor. An adaptive algorithm was developed and implemented in both simulation and hardware, yielding significant reductions in rotor displacement in the presence of an external excitation. Ultimately, this type of algorithm could be applied to a magnetic bearing grinder to reduce unwanted motion of the spindle which leads to poor part finish and chatter.

PETTEYS,REBECCA; PARKER,GORDON

2000-08-31T23:59:59.000Z

55

Measurements of fast neutrons by bubble detectors  

SciTech Connect

Neutron bubble detectors have been studied using Am-Be and D-D neuron sources, which give limited energy information. The Bubble Detector Spectrometer (BDS) have six different energy thresholds ranging from 10 KeV to 10 Mev. The number of bubbles obtained in each measurement is related to the dose (standardized response R) equivalent neutrons through sensitivity (b / {mu}Sv) and also with the neutron flux (neutrons per unit area) through a relationship that provided by the manufacturer. Bubble detectors were used with six different answers (0.11 b/ {mu}Sv, 0093 b/{mu}Sv, 0.14 b/{mu}Sv, 0.17 b/{mu}Sv, 0051 b/{mu}Sv). To test the response of the detectors (BDS) radiate a set of six of them with different energy threshold, with a source of Am-Be, placing them at a distance of one meter from it for a few minutes. Also, exposed to dense plasma focus Fuego Nuevo II (FN-II FPD) of ICN-UNAM, apparatus which produces fusion plasma, generating neutrons by nuclear reactions of neutrons whose energy emitting is 2.45 MeV. In this case the detectors were placed at a distance of 50 cm from the pinch at 90 Degree-Sign this was done for a certain number of shots. In both cases, the standard response is reported (Dose in {mu}Sv) for each of the six detectors representing an energy range, this response is given by the expression R{sub i}= B{sub i} / S{sub i} where B{sub i} is the number of bubbles formed in each and the detector sensitivity (S{sub i}) is given for each detector in (b / {mu}Sv). Also, reported for both cases, the detected neutron flux (n cm{sup -2}), by a given ratio and the response involves both standardized R, as the average cross section sigma. The results obtained have been compared with the spectrum of Am-Be source. From these measurements it can be concluded that with a combination of bubble detectors, with different responses is possible to measure the equivalent dose in a range of 10 to 100 {mu}Sv fields mixed neutron and gamma, and pulsed generated fusion devices.

Castillo, F.; Martinez, H. [Laboratorio de Espectroscopia, Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Apartado Postal 48-3, 62251, Cuernavaca Morelos (Mexico); Leal, B. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, 04510, Ciudad Universitaria, Mexico D. F. (Mexico); Rangel, J. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, 04510, Ciudad Universitaria, Mexico D. F (Mexico); Reyes, P. G. [Facultad de Ciencias, Universidad Autonoma del Estado de Mexico, Instituto Literario 100, Col. Centro, 50000, Toluca Estado de Mexico (Mexico)

2013-07-03T23:59:59.000Z

56

Responsive copolymers for enhanced petroleum recovery. Quarterly technical progress report, September 22, 1993--December 22, 1993  

SciTech Connect

Synthetic efforts have focused on the development of ionically modified polymers based on monomers which contain an acrylamido functionality. The monomers may possess either cationic or anionic functionality which, depending on the pH of the polymer solution, may either be ionically charged or neutral. Thus, by adjusting the pH, the degree of ionization of the polymer may be controlled which will in turn influence the rheological behavior. Previous research in our laboratories has revealed that this behavior allows the selective synthesis of polymers operative over a wide range of conditions. This section describes the synthesis and solution behavior of cationic polyelectrolytes based on copolymers of acrylamide (AM) and 2-acrylamido-2-methylpropanetrimethylammonium chloride (AMPTAC), the ATAM series, as well as ampholytic terpolymers of acrylamide (AM), sodium 3-acrylamido-3-methylbutanoate (NaAMB), and 2-acrylamido-2-methylpropanetrimethylammonium chloride (AMPTAC), the ATABAM series. Monomers used in the ATAM and ATABAM series are shown.

McCormick, C.; Hester, R.

1993-12-31T23:59:59.000Z

57

Neutron Interactions as Seen by A Segmented Germanium Detector  

E-Print Network (OSTI)

The GERmanium Detector Array, GERDA, is designed for the search for ``neutrinoless double beta decay'' (0-nu-2-beta) with germanium detectors enriched in Ge76. An 18-fold segmented prototype detector for GERDA Phase II was exposed to an AmBe neutron source to improve the understanding of neutron induced backgrounds. Neutron interactions with the germanium isotopes themselves and in the surrounding materials were studied. Segment information is used to identify neutron induced peaks in the recorded energy spectra. The Geant4 based simulation package MaGe is used to simulate the experiment. Though many photon peaks from germanium isotopes excited by neutrons are correctly described by Geant4, some physics processes were identified as being incorrectly treated or even missing.

I. Abt; A. Caldwell; K. Kroeninger; J. Liu; X. Liu; B. Majorovits

2007-11-14T23:59:59.000Z

58

Radiation Hardness Tests of SiPMs for the JLab Hall D Barrel Calorimeter  

E-Print Network (OSTI)

We report on the measurement of the neutron radiation hardness of silicon photomultipliers (SiPMs) manufactured by Hamamatsu Corporation in Japan and SensL in Ireland. Samples from both companies were irradiated by neutrons created by a 1 GeV electron beam hitting a thin lead target at Jefferson Lab Hall A. More tests regarding the temperature dependence of the neutron radiation damage and self-annealing were performed on Hamamatsu SiPMs using a calibrated Am-Be neutron source from the Jefferson Lab Radiation Control group. As the result of irradiation both dark current and dark rate increase linearly as a function of the 1 MeV equivalent neutron fluence and a temperature dependent self-annealing effect is observed.

Yi Qiang; Carl Zorn; Fernando Barbosa; Elton Smith

2012-07-16T23:59:59.000Z

59

Radiation Hardness Tests of SiPMs for the JLab Hall D Barrel Calorimeter  

E-Print Network (OSTI)

We report on the measurement of the neutron radiation hardness of silicon photomultipliers (SiPMs) manufactured by Hamamatsu Corporation in Japan and SensL in Ireland. Samples from both companies were irradiated by neutrons created by a 1 GeV electron beam hitting a thin lead target at Jefferson Lab Hall A. More tests regarding the temperature dependence of the neutron radiation damage and self-annealing were performed on Hamamatsu SiPMs using a calibrated Am-Be neutron source from the Jefferson Lab Radiation Control group. As the results of all irradiation, both dark current and dark noise increase linearly as a function of the 1 MeV equivalent neutron fluence and a temperature dependent self-annealing effect is observed together with the radiation damage.

Qiang, Yi; Barbosa, Fernando; Smith, Elton

2012-01-01T23:59:59.000Z

60

Preliminary study of neutron absorption by concrete with boron carbide addition  

SciTech Connect

Concrete has become a conventional material in construction of nuclear reactor due to its properties like safety and low cost. Boron carbide was added as additives in the concrete construction as it has a good neutron absorption property. The sample preparation for concrete was produced with different weight percent of boron carbide powder content. The neutron absorption rate of these samples was determined by using a fast neutron source of Americium-241/Be (Am-Be 241) and detection with a portable backscattering neutron detector. Concrete with 20 wt % of boron carbide shows the lowest count of neutron transmitted and this indicates the most neutrons have been absorbed by the concrete. Higher boron carbide content may affect the concrete strength and other properties.

Abdullah, Yusof, E-mail: yusofabd@nuclearmalaysia.gov.my; Yusof, Mohd Reusmaazran; Zali, Nurazila Mat; Ahmad, Megat Harun Al Rashid Megat; Yazid, Hafizal [Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor (Malaysia); Ariffin, Fatin Nabilah Tajul; Ahmad, Sahrim [School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor (Malaysia); Hamid, Roszilah [Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor (Malaysia); Mohamed, Abdul Aziz [College of Engineering, Universiti Tenaga National, Jalan Ikram-Uniten, 43000 Kajang, Selangor (Malaysia)

2014-02-12T23:59:59.000Z

Note: This page contains sample records for the topic "amb amb amb" 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

Metallurgical Laboratory Hazardous Waste Management Facility groundwater monitoring report. First quarter 1995  

SciTech Connect

During first quarter 1995, samples from AMB groundwater monitoring wells at the Metallurgical Laboratory Hazardous Waste Management Facility (Met Lab HWMF) were analyzed for selected heavy metals, field measurements, radionuclides, volatile organic compounds, and other constituents. Six parameters exceeded standards during the quarter. As in previous quarters, tetrachloroethylene and trichloroethylene exceeded final Primary Drinking Water Standards (PDWS). Total organic halogens exceeded its Savannah River Site (SRS) Flag 2 criterion during first quarter 1995 as in fourth quarter 1994. Aluminum, iron, and manganese, which were not analyzed for during fourth quarter 1994, exceeded the Flag 2 criteria in at least two wells each during first quarter 1995. Groundwater flow direction and rate in the M-Area Aquifer Zone were similar to previous quarters. Conditions affecting the determination of groundwater flow directions and rates in the Upper Lost Lake Aquifer Zone, Lower Lost Lake Aquifer Zone, and the Middle Sand Aquifer Zone of the Crouch Branch Confining Unit were also similar to previous quarters.

NONE

1995-06-01T23:59:59.000Z

62

Efficient chemical regeneration of LiBH4NH3 spent fuel for hydrogen storage  

Science Journals Connector (OSTI)

Abstract The absence of an efficient method for the regeneration of ammine metal borohydrides (M(BH4)nxNH3, AMBs) from their dehydrogenated products has hindered their potential application as hydrogen storage materials. In this paper, we demonstrate a high-yield chemical regeneration of LiBH4NH3 based on a three step process (digestion (H+ addition), reduction (H? addition), and ammonia complexation) at ambient temperature. Our results demonstrated that LiBN polymer was digested by methanol to form LiB(OCH3)4, which can be converted into LiBH4 by using LiAlH4 in the reduction process. The generation of LiBH4NH3 in ammonia complexion step was achieved by exposing the obtained LiBH4 in an ammonia atmosphere.

Yingbin Tan; Xiaowei Chen; Guanglin Xia; Xuebin Yu

2014-01-01T23:59:59.000Z

63

Use of Activation Technique and MCNP Calculations for Measurement of Fast Neutron Spatial Distribution at the MJ Plasma Focus Device.  

Science Journals Connector (OSTI)

In this paper Plasma-Focus (PF) neutron emission properties have been studied using Monte Carlo calculations for neutron and photon transport. A Thermal Neutron Scaling Factor as a function of angular position of silver activation detectors placed around MJ Plasma Focus (PF-1000) device has been calculated. Detector responses calculated for 2.5 MeV neutrons and neutrons produced by Am-Be calibration source have been obtained .The results have shown the detector response dependence on the kind of calibration neutron source and on local geometrical/structural characteristics of the PF-1000 devices. Thus the proper calibration procedure ought to be performed for correct measurement of neutron yield within Plasma-Focus devices.

B. Bienkowska; M. Scholz; K. Wincel; B. Zar?ba

2008-01-01T23:59:59.000Z

64

Digital discrimination of neutrons and gamma-rays in organic scintillation detectors using moment analysis  

SciTech Connect

Digital discrimination of neutron and gamma-ray events in an organic scintillator has been investigated by moment analysis. Signals induced by an americium-beryllium (Am/Be) isotropic neutron source in a stilbene crystal detector have been sampled with a flash analogue-to-digital converter (ADC) of 1 GSamples/s sampling rate and 10-bit vertical resolution. Neutrons and gamma-rays have been successfully discriminated with a threshold corresponding to gamma-ray energy about 217 keV. Moment analysis has also been verified against the results assessed by a time-of-flight (TOF) measurement. It is shown that the classification of neutrons and gamma-rays afforded by moment analysis is consistent with that achieved by digital TOF measurement. This method has been applied to analyze the data acquired from the stilbene crystal detector in mixed radiation field of the HL-2A tokamak deuterium plasma discharges and the results are described.

Xie Xufei; Zhang Xing; Yuan Xi; Chen Jinxiang; Li Xiangqing; Zhang Guohui; Fan Tieshuan [School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing (China); Yuan Guoliang; Yang Jinwei; Yang Qingwei [Southwestern Institute of Physics, Chengdu (China)

2012-09-15T23:59:59.000Z

65

Metallurgical Laboratory Hazardous Waste Management Facility groundwater monitoring report. Second quarter 1995  

SciTech Connect

During second quarter 1995, samples from seven new AMB groundwater monitoring wells at the Metallurgical Laboratory Hazardous Waste Management Facility (Met Lab HWMF) were analyzed for a comprehensive list of constituents. Two parameters exceeded standards during the quarter. Lead and nickel appear to exceed final Primary Drinking Water Standards (PDWS) in AMB-18A. These data were suspect and a rerun of the samples showed levels below flagging criteria. This data will be monitored in 3Q95. Aluminum, iron, manganese, boron, silver and total organic halogens exceeded Flag 2 criteria in at least one well each during second quarter 1995. This data, as well, will be confirmed by 3Q95 testing. Groundwater flow directions in the M-Area Aquifer Zone were similar to previous quarters; the flow rate estimate, however, differs because of an error noted in the scales of measurements used for previous estimates. The estimate was 470 ft/year during second quarter 1995. Reliable estimates of flow directions and rates in the Upper Lost Lake Aquifer Zone could not be determined in previous quarters because data were insufficient. The first estimate from second quarter 1995 shows a 530 ft/year rate. Reliable estimates of flow directions and rates in the Lower Lost Lake Aquifer Zone and in the Middle Sand Aquifer Zone of the CBCU could not be calculated because of the low horizontal gradient and the near-linear distribution of the monitoring wells. During second quarter 1994, SRS received South Carolina Department of Health and Environmental Control approval for constructing five point-of-compliance wells and two plume definition wells near the Met Lab HWMF. This project began in July 1994 and was completed in March of this year. Analytical data from these wells are presented in this report for the first time.

Chase, J.A.

1995-09-01T23:59:59.000Z

66

Student Progress Report: Summer 2012  

SciTech Connect

The Los Alamos SOURCES 4C code has been benchmarked for alpha particle beam problems and common neutron source materials (e.g. those containing plutonium or beryllium), but little benchmarking has been performed for more exotic isotopic neutron sources or uranium mixtures. This work extends SOURCES 4C benchmarking effort. Experimental data was found in the literature for several isotopic neutron sources, namely Am/Be, Am/F, Am/B, Cm/Be, {sup 238}Pu/{sup 13}C, {sup 252}Cf, and Am/Li. SOURCES 4C simulations were run for each of these materials and the output was used to develop a source term for use in MCNP, which allowed other physical effects such as down scattering and multiplication to be accounted for. Neutron emission rate and energy spectra results were compared for these sources, generally yielding order-of-magnitude agreement for the neutron emission rate and qualitative agreement for the shape of the neutron energy spectra. An exception was the neutron energy spectrum calculated for {sup 238}Pu/{sup 13}C whose primary peak was calculated to be 1 MeV higher than was measured. The accuracy of SOURCES is highly dependent on an accurate material definition. This discrepancy is likely due to inhomogeneity of the source materials, which cannot be simulated by SOURCES or MCNP, and chemical impurities not reported by the experimentalist. The results of the Am/Li calculation demonstrate that even small impurities are capable of dramatically changing the results. The neutron emission rates of numerous uranium compounds were also calculated with SOURCES and benchmarked with experimentally determined values found in the literature. The calculated results were similar to the experimental results with less than 10% error for the following compounds: uranyl fluoride, uranyl nitrate, UO{sub 3}, UO{sub 2}F{sub 2}, UF{sub 4}, UF{sub 6}, and U-metal of less than 90% enrichment. This work demonstrates the robustness of SOURCES as a tool for calculating neutron emission rates and energy spectra.

Tucker, Lucas P [Los Alamos National Laboratory

2012-08-06T23:59:59.000Z

67

Responsive copolymers for enhanced petroleum recovery. Annual report  

SciTech Connect

A coordinated research program involving synthesis, characterization, and rheology has been undertaken to develop advanced polymer system which should be significantly more efficient than polymers presently used for mobility control and conformance. Unlike the relatively inefficient, traditional EOR polymers, these advanced polymer systems possess microstructural features responsive to temperature, electrolyte concentration, and shear conditions. Contents of this report include the following chapters. (1) First annual report responsive copolymers for enhanced oil recovery. (2) Copolymers of acrylamide and sodium 3-acrylamido-3-methylbutanoate. (3) Terpolymers of NaAMB, Am, and n-decylacrylamide. (4) Synthesis and characterization of electrolyte responsive terpolymers of acrylamide, N-(4-butyl)phenylacrylamide, and sodium acrylate, sodium-2-acrylamido-2-methylpropanesulphonate or sodium-3-acrylamido-3-methylbutanoate. (5) Synthesis and solution properties of associative acrylamido copolymers with pyrensulfonamide fluorescence labels. (6) Photophysical studies of the solution behavior of associative pyrenesulfonamide-labeled polyacrylamides. (7) Ampholytic copolymers of sodium 2-(acrylamido)-2-methylpropanesulfonate with [2-(acrylamido)-2-methypropyl]trimethylammonium chloride. (8) Ampholytic terpolymers of acrylamide with sodium 2-acrylamido-2-methylpropanesulphoante and 2-acrylamido-2-methylpropanetrimethyl-ammonium chloride and (9) Polymer solution extensional behavior in porous media.

McCormick, C.; Hester, R.

1994-08-01T23:59:59.000Z

68

SHIELDING ANALYSIS FOR PORTABLE GAUGING COMBINATION SOURCES  

SciTech Connect

Radioisotopic decay has been used as a source of photons and neutrons for industrial gauging operations since the late 1950s. Early portable moisture/density gauging equipment used Americium (Am)-241/Beryllium (Be)/Cesium (Cs)-137 combination sources to supply the required nuclear energy for gauging. Combination sources typically contained 0.040 Ci of Am-241 and 0.010 Ci of CS-137 in the same source capsule. Most of these sources were manufactured approximately 30 years ago. Collection, transportation, and storage of these sources once removed from their original device represent a shielding problem with distinct gamma and neutron components. The Off-Site Source Recovery (OSR) Project is planning to use a multi-function drum (MFD) for the collection, shipping, and storage of AmBe sources, as well as the eventual waste package for disposal. The MFD is an approved TRU waste container design for DOE TRU waste known as the 12 inch Pipe Component Overpack. As the name indicates, this drum is based on a 12 inch ID stainless steel weldment approximately 25 inch in internal length. The existing drum design allows for addition of shielding within the pipe component up to the 110 kg maximum pay load weight. The 12 inch pipe component is packaged inside a 55-gallon drum, with the balance of the interior space filled with fiberboard dunnage. This packaging geometry is similar to the design of a DOT 6M, Type B shipping container.

J. TOMPKINS; L. LEONARD; ET AL

2000-08-01T23:59:59.000Z

69

A hybrid passive/active system for control of the noise radiated by a small generator  

Science Journals Connector (OSTI)

The aim of this work was the design and implementation of a hybrid passive/active system to control the noise radiated by a small generator. The fundamental frequency of the periodic radiated noise depends on the electrical load plugged into the generator. Passive control is afforded by a rectangular enclosure with dimensions 1000710530?mm3. The wall panels of the enclosure (steel 1.5 mm thick) are lined with a 30?mm layer of sound absorbing material. Special attention is paid to technical aspects such as air refreshing and temperature inside the enclosure. The measured insertion loss is higher than 20 dB above 500 Hz. Low?frequency noise escapes the enclosure via intake and exhaust openings. Active control is applied to the exhaust noise. The reference signal is supplied by an accelerometer over the air filter case of the generator. A high?temperature loudspeaker is used as control source. The error signal is picked up by a cheap electric microphone. Since noise along the exhaust is too loud the microphone sensitivity had to be reduced by taping its diaphragm. A commercial system is used to implement active noise control. [Work supported by CICYT Project AMB97?1175?C03?01.

Maria Cuesta; Pedro Cobo

1999-01-01T23:59:59.000Z

70

Radiation tolerance survey of selected silicon photomultipliers to high energy neutron irradiation  

SciTech Connect

A key feature of silicon photomultipliers (SiPMs) that can hinder their wider use in medium and high energy physics applications is their relatively high sensitivity to high energy background radiation, with particular regard to high energy neutrons. Dosages of 1010 neq/cm2 can damage them severely. In this study, some standard versions along with some new formulations are irradiated with a high intensity 241AmBe source up to a total dose of 5 109 neq/cm2. Key parameters monitored include dark noise, photon detection efficiency (PDE), gain, and voltage breakdown. Only dark noise was found to change significantly for this range of dosage. Analysis of the data indicates that within each vendor's product line, the change in dark noise is very similar as a function of increasing dose. At present, the best strategy for alleviating the effects of radiation damage is to cool the devices to minimize the effects of increased dark noise with accumulated dose.

Barbosa, Fernando J. [JLAB; McKisson, John E. [JLAB; Qiang, Yi [JLAB; Steinberger, William [JLAB; Xi, Wenze [JLAB; Zorn, Carl J. [JLAB

2012-11-01T23:59:59.000Z

71

Responsive copolymers for enhanced petroleum recovery. Second annual report  

SciTech Connect

The authors describe second year efforts in synthesis, characterization, and rheology to develop polymers with significantly improved efficiency in mobility control and conformance. These advanced polymer systems would maintain high viscosities or behave as virtual gels under low shear conditions and at elevated electrolyte concentrations. At high fluid shear rates, associates would deaggregate yielding low viscosity solutions, reducing problems of shear degradation or face plugging during injection. Polymeric surfactants were also developed with potential for use in higher salt, higher temperature reservoirs for mobilization of entrapped oil. Chapters include: Ampholytic terpolymers of acrylamide with sodium 3-acrylamido-3-methylbutanoate and 2-acrylamido-2-methylpropanetrimethylammonium chloride; Hydrophilic sulfobetaine copolymers of acrylamide and 3-(2-acrylamido-methylpropane-dimethylammonio)-1-propanesulfonate; Copolymerization of maleic anhydride and N-vinylformamide; Reactivity ratio of N-vinylformamide with acrylamide, sodium acrylate, and n-butyl acrylate; Effect of the distribution of the hydrophobic cationic monomer dimethyldodecyl(2-acrylamidoethyl)ammonium bromide on the solution behavior of associating acrylamide copolymers; Effect of surfactants on the solution properties of amphipathic copolymers of acrylamide and N,N-dimethyl-N-dodecyl-N-(2-acrylamidoethyl)ammonium bromide; Associative interactions and photophysical behavior of amphiphilic terpolymers prepared by modification of maleic anhydride/ethyl vinyl ether copolymers; Copolymer compositions of high-molecular-weight functional acrylamido water-soluble polymers using direct-polarization magic-angle spinning {sup 13}C NMR; Use of factorial experimental design in static and dynamic light scattering characterization of water soluble polymers; and Porous medium elongational rheometer studies of NaAMB/AM copolymer solutions.

McCormick, C.; Hester, R.

1995-05-01T23:59:59.000Z

72

High Purity Americium-241 for Fuel Cycle R&D Program  

SciTech Connect

Previously the U.S. Department of Energy released Am-241 for various applications such as smoke detectors and Am-Be neutron sources for oil wells. At this date there is a shortage of usable, higher purity Am-241 in metal and oxide form available in the United States. Recently, the limited source of Am-241 has been from Russia with production being contracted to existing customers. The shortage has resulted in the price per gram rising dramatically over the last few years. DOE-NE currently has need for high purity Am-241 metal and oxide to fabricate fuel pellets for reactor testing in the Fuel Cycle R&D program. All the available high purity americium has been gathered from within the DOE system of laboratories. However, this is only a fraction of the projected needs of FCRD over the next 10 years. Therefore, FCR&D has proposed extraction and purification concepts to extract Am-241 from a mixed AmO2-PuO2 feedstock stored at the Savannah River Site. The most simple extraction system is based upon high temperature reduction using lanthanum metal with concurrent evaporation and condensation to produce high purity Am metal. Metallic americium has over a four order of magnitude higher vapor pressure than plutonium. Results from small-scale reduction experiments are presented. These results confirm thermodynamic predictions that at 1000 deg C metallic lanthanum reduces both PuO2 and AmO2. Faster kinetics are expected for temperatures up to about 1500 deg C.

Dr. Paul A. Lessing

2011-07-01T23:59:59.000Z

73

Bioinspired synthesis of magnetic nanoparticles  

SciTech Connect

The synthesis of magnetic nanoparticles has long been an area of active research. Magnetic nanoparticles can be used in a wide variety of applications such as magnetic inks, magnetic memory devices, drug delivery, magnetic resonance imaging (MRI) contrast agents, and pathogen detection in foods. In applications such as MRI, particle uniformity is particularly crucial, as is the magnetic response of the particles. Uniform magnetic particles with good magnetic properties are therefore required. One particularly effective technique for synthesizing nanoparticles involves biomineralization, which is a naturally occurring process that can produce highly complex nanostructures. Also, the technique involves mild conditions (ambient temperature and close to neutral pH) that make this approach suitable for a wide variety of materials. The term 'bioinspired' is important because biomineralization research is inspired by the naturally occurring process, which occurs in certain microorganisms called 'magnetotactic bacteria'. Magnetotactic bacteria use biomineralization proteins to produce magnetite crystals having very good uniformity in size and morphology. The bacteria use these magnetic particles to navigate according to external magnetic fields. Because these bacteria synthesize high quality crystals, research has focused on imitating aspects of this biomineralization in vitro. In particular, a biomineralization iron-binding protein found in a certain species of magnetotactic bacteria, magnetospirillum magneticum, AMB-1, has been extracted and used for in vitro magnetite synthesis; Pluronic F127 gel was used to increase the viscosity of the reaction medium to better mimic the conditions in the bacteria. It was shown that the biomineralization protein mms6 was able to facilitate uniform magnetite synthesis. In addition, a similar biomineralization process using mms6 and a shorter version of this protein, C25, has been used to synthesize cobalt ferrite particles. The overall goal of this project is to understand the mechanism of magnetite particle synthesis in the presence of the biomineralization proteins, mms6 and C25. Previous work has hypothesized that the mms6 protein helps to template magnetite and cobalt ferrite particle synthesis and that the C25 protein templates cobalt ferrite formation. However, the effect of parameters such as the protein concentration on the particle formation is still unknown. It is expected that the protein concentration significantly affects the nucleation and growth of magnetite. Since the protein provides iron-binding sites, it is expected that magnetite crystals would nucleate at those sites. In addition, in the previous work, the reaction medium after completion of the reaction was in the solution phase, and magnetic particles had a tendency to fall to the bottom of the medium and aggregate. The research presented in this thesis involves solid Pluronic gel phase reactions, which can be studied readily using small-angle x-ray scattering, which is not possible for the solution phase experiments. In addition, the concentration effect of both of the proteins on magnetite crystal formation was studied.

David, Anand

2009-05-26T23:59:59.000Z

74

Cle Elum and Supplementation Research Facility : Monthly Progress Report October 2008.  

SciTech Connect

FISH PRODUCTION: On October 7th the 2008 spawning season was completed. 823 adults were transferred to the facility for the 2008 season. The overall adult mortality was 6.9% (1.3% pre-spawning mortality and 5.6% encountered after sorting). Wild/natural salmon collected included 278 females, 173 males, and 29 jacks for a total 480 fish for the 2008 brood. Supplemented brood stock collected included 149 adults (85 females, 35 males and 29 jacks). Hatchery control brood collected for research included 194 adults (91 females, 68 males and 35 jacks). Eggs will be inventoried in November with an actual summary of eggs numbers to be submitted for the November report. The estimated egg takes (production) for the 2008 season was 1,375,146 eggs with 1,006,063 comprising of W x W crosses and 250,755 eggs of H x H crosses with 118,328 supplement crosses. Total fish on hand for the 2007 brood is 768,751 with an average fish per pound of 30.6 f/lb. FISH CULTURE: The marking and pit-tagging operation started on October 13th. The pit-tagging portion was completed on October 23rd. A total 40,000 juveniles were pit-tagged (2,000 from each of the production ponds and 4,000 each for the hatchery juvenile ponds 9 & 10). Cle Elum staff began shocking, sorting, counting and splitting eggs in incubation. Shocking eggs will separate live eggs from dead eggs. Eggs are treated with formalin three times a week to control fungus. The focus for the culturists during the month of October entail completing the final spawn (egg take) on the 7th, pond cleaning, keeping the marking trailers supplied with fish and end of month sampling. The adult holding ponds were power washed and winterized for the shut down period. Facility crew members Greg Strom and Mike Whitefoot assisted Joe Blodgett and his crew with fish brood collection on the 22nd of October. Fall Chinook and Coho salmon were seined up and put in tanker trucks from Chandler canal and transported to holding ponds for later spawning. Charlie, Simon and Vernon assisted with sorting and spawning Summer Chinook at the Wells hatchery for the Summer Chinook reintroduction program on the lower Yakima River. WATER PRODUCTION: The current combined well and river water supply to the complex is 12,909 gallons/min. Four river pumps (12,400gpm) and one well pump No.2 (509gpm) are supplying water to the facility main head box and the egg incubation building. ACCLIMATION SITES: Easton had much activity in October, the electrical power panel that's switches commercial power operation to generator power (transfer switch) malfunctioned. Charlie called Wallace Electric as well as ASCO Services to trouble shoot the problem which has yet to be determined. Heaters have been turned on in all service buildings at the acclimation sites. Pacific States Marine Fisheries Commission traveled to Easton to install a pole to mount a satellite and a new ups backup system with new monitors and computers for pit tag data recording and transmitting. Brown and Jackson pumped out the septic tanks at Easton and Clark Flat. AMB Tools performed maintenance on the compressors at the acclimation sites as well as Cle Elum (5 total). VEHICLE MAINTENANCE: Day Wireless performed maintenance on all handheld and vehicle radios. Day Wireless repaired radio communications (static noise) on the 6th also. All vehicles mileages and conditions are reported monthly to Toppenish. Cle Elum staff continues to clean and maintain all facility vehicles weekly. MAINTENANCE BUILDING MAINTENANCE: Kevin of Raincountry was called in response to repairs needed to the water chiller system. Cle Elum staff winterized all irrigation as well as shop grounds. Brown and Jackson pumped out the septic tank at the hatchery on the 22nd. HATCHERY BUILDING MAINTENANCE: The incubation room has been set up for transfer of eggs from isolation buckets to vertical stacks, temperature units are recorded daily. RESENTDENTIAL HOUSING: Residents irrigation has been winterized and fall fertilizer was applied to all grass on facility. Four Seasons performed maintenance on all heating sy

Cle Elum Supplementation and Research Facility

2008-12-11T23:59:59.000Z