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1

Blue Ng | Open Energy Information  

Open Energy Info (EERE)

Ng Jump to: navigation, search Name Blue-Ng Place Bath, United Kingdom Zip BA1 1SR Sector Biomass Product UK-based company that constructs and operates combined heat and...

2

The Design of RELAX NG  

E-Print Network (OSTI)

RELAX NG is a new schema language for XML. This paper discusses various aspects of the design of RELAX NG including the treatment of attributes, datatyping, mixed content, unordered content namespaces, cross-references and modularity.

James Clark

2001-01-01T23:59:59.000Z

3

Ng_NERSC_ASCR.pptx  

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

Esmond G. Ng Lawrence Berkeley National Laboratory January 6, 2011 Case Study Requirement Worksheet focused on an allocation titled "High Performance Sparse Matrix Algorithms"...

4

Instrument Schedule for ng7refl  

Science Conference Proceedings (OSTI)

Instrument Schedule For NG-7 -- Cold neutron reflectometer-horizontal sample. ... 12/12/2012 11:00, 6, 18041, Dependence of the fusion of Dengue E ...

5

PVT-NG sensor final report.  

SciTech Connect

This document is a final report for the polyvinyl toluene (PVT) neutron-gamma (PVT-NG) project, which was sponsored by the Domestic Nuclear Detection Office (DNDO). The PVT-NG sensor uses PVT detectors for both gamma and neutron detection. The sensor exhibits excellent spectral resolution and gain stabilization, which are features that are beneficial for detection of both gamma-ray and neutron sources. In fact, the ability to perform isotope identification based on spectra that were measured by the PVT-NG sensor was demonstrated. As described in a previous report, the neutron sensitivity of the first version of the prototype was about 25% less than the DNDO requirement of 2.5 cps/ng for bare Cf-252. This document describes design modifications that were expected to improve the neutron sensitivity by about 50% relative to the PVT-NG prototype. However, the project was terminated before execution of the design modifications after portal vendors demonstrated other technologies that enable neutron detection without the use of He-3. Nevertheless, the PVT-NG sensor development demonstrated several performance goals that may be useful in future portal designs.

Mitchell, Dean James; Brusseau, Charles A.

2012-01-01T23:59:59.000Z

6

AC H I E V I NG  

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

AC AC H I E V I NG The Department's strategic plan flow is highlighted in the cascade below beginning with the mission statement which flows to the strategic themes. The strategic themes connect to the broader strategic goals and are linked to the annual performance goals in the performance budget through the multi-year program plans. The multi-year program plans allow DOE to strategize over a five-year period how each program will implement the strategic goals of the Department. Annual performance goals and assessment of performance against prior-year

7

Energy Research at the UW Crea ng sustainable energy sources  

E-Print Network (OSTI)

Energy Research at the UW Genera on Crea ng sustainable energy sources from alterna ve low environmental- impact materials and natural processes Energy harves ng: powering small devices from their surroundings Bioenergy: energy from, or enabled by living organisms Fusion: energy from the stars Protein

Washington at Seattle, University of

8

A New Mass Formula for NG Bosons in QCD  

E-Print Network (OSTI)

An often used mass formula for Nambu-Goldstone (NG) bosons in QCD, such as the pions, involves the condensate $$, $f_{\\pi}$ and the quark current masses. We argue, within the context of the Global Colour Model to QCD, that this expression is wrong. Analysis of the interplay between the Dyson-Schwinger equation for the constituent quark effect and the Bethe-Salpeter equation for the NG boson results in a new mass formula.

Reginald T. Cahill; Susan M. Gunner

1995-07-10T23:59:59.000Z

9

Ng-Backmarking - an Algorithm for Constraint Satisfaction  

E-Print Network (OSTI)

Ng-backmarking with Min-conflict repair, a hybrid algorithm for solving constraint satisfaction problems, is presented in the context of the four main approaches to constraint satisfaction and optimisation: tree-search, domainfiltering, solution repair, and learning while searching. Repair-based techniques are often designed to use local gradients to direct the search for a solution to a constraint satisfaction problem. It has been shown experimentally that such techniques are often well suited to solving large scale problems. One drawback is that they do not guarantee a (optimal) solution if one exists. The motivation behind ng-backmarking is to allow the search to follow local gradients in the search space whilst ensuring a (optimal) solution if one exists. The search space of this combined approach is controlled by the ng-backmarking process, a method of learning constraints during search (at each failure point 1 ) that may be used to avoid the repeated traversing of failed paths ...

Thomas Richards; Yuejun Jiang; Barry Richards

1995-01-01T23:59:59.000Z

10

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... membranes Apr 28 2 Y Li (SUNY-Stony 6414 SANS Study of ZrTiYOx TBC 9P Hammouda Brook)+ A Allen S19-46 and SOFC membrane (NIST ...

11

Next Generation Trusted Radiation Identification System (NG-TRIS).  

SciTech Connect

The original Trusted Radiation Identification System (TRIS) was developed from 1999-2001, featuring information barrier technology to collect gamma radiation template measurements useful for arms control regime operations. The first TRIS design relied upon a multichannel analyzer (MCA) that was external to the protected volume of the system enclosure, undesirable from a system security perspective. An internal complex programmable logic device (CPLD) contained data which was not subject to software authentication. Physical authentication of the TRIS instrument case was performed by a sensitive but slow eddy-current inspection method. This paper describes progress to date for the Next Generation TRIS (NG-TRIS), which improves the TRIS design. We have incorporated the MCA internal to the trusted system volume, achieved full authentication of CPLD data, and have devised rapid methods to authenticate the system enclosure and weld seals of the NG-TRIS enclosure. For a complete discussion of the TRIS system and components upon which NG-TRIS is based, the reader is directed to the comprehensive user's manual and system reference of Seager, et al.

Flynn, Adam J.; Amai, Wendy A.; Merkle, Peter Benedict; Anderson, Lawrence Frederick; Strother, Jerry D.; Weber, Thomas M.; Etzkin, Joshua L.

2010-05-01T23:59:59.000Z

12

Cytoskeletal reorganization induced by engagement of the NG2 proteoglycan leads to cell spreading and migration  

E-Print Network (OSTI)

Cells expressing the NG2 proteoglycan can attach, spread, and migrate on surfaces coated with NG2 mAbs, demonstrating that engagement of NG2 can trigger the cytoskeletal rearrangements necessary for changes in cell morphology and motility. Engagement of different epitopes of the proteoglycan results in distinct forms of actin reorganization. On mAb D120, the cells contain radial actin spikes characteristic of filopodial extension, whereas on mAb N143, the cells contain cortical actin bundles characteristic of lamellipodia. Cells that express NG2 variants lacking the transmembrane and cytoplasmic domains are unable to spread or migrate on NG2 mAb-coated surfaces, indicating that these portions of the molecule are essential for NG2-mediated signal transduction. Cells expressing an NG2 variant lacking the C-terminal half of the cytoplasmic domain can still spread normally on mAbs D120 and N143, suggesting that the membraneproximal cytoplasmic segment is responsible for this process. In contrast, this variant migrates poorly on mAb D120 and exhibits abnormal arrays of radial actin filaments decorated with fascin during spreading on this mAb. The C-terminal portion of the NG2 cytoplasmic domain, therefore, may be involved in regulating molecular events that are crucial for cell motility.

Xuexun Fang; Michael A. Burg; Diana Barritt; Akiko Nishiyama; William B. Stallcup; Thomas D. Pollard

1999-01-01T23:59:59.000Z

13

KHALIL AMINE, PH  

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

University of Illinois in Urbana, Trace Elements in Municipal Solid Waste Incinerator Ash Education Ph.D., Nuclear EngineeringGeochemistry Minor, 1998. M.S., Nuclear...

14

Multiple regions of the NG2 proteoglycan inhibit neurite growth and induce growth cone collapse  

E-Print Network (OSTI)

The NG2 chondroitin sulfate proteoglycan, an integral membrane proteoglycan, inhibits axon growth from cerebellar granule neurons and dorsal root ganglia (DRG) neurons in vitro. The extracellular domain of the NG2 core protein contains three subdomains: an N-terminal globular domain (domain 1), a central extended domain that has the sites for glycosaminoglycan (GAG) attachment (domain 2), and a juxtamembrane domain (domain 3). Here, we used domain-specific fusion proteins and antibodies to map the inhibitory activity within the NG2 core protein. Fusion proteins encoding domain 1 (D1-Fc) or domain 3 (D3-Fc) of NG2 inhibited axon growth from cerebellar granule neurons when the proteins were substrate-bound. These proteins also induced growth cone collapse from newborn DRG neurons when added to the culture medium. Domain 2 only inhibited axon growth when the GAG chains were present. Neutralizing antibodies directed against domain 1 or 3 blocked completely the inhibition from substrates coated with D1-Fc or D3-Fc. When the entire extracellular domain of NG2 was used as a substrate, however, both neutralizing antibodies were needed to reverse completely the inhibition. When NG2 was expressed on the surface of HEK293 cells, the neutralizing anti-D1 antibody was sufficient to block the inhibition, whereas the anti-D3 antibody had no effect. These results suggest that domains 1 and 3 of NG2 can inhibit neurite growth independently. These inhibitory domains may be differentially exposed depending on whether NG2 is presented as an integral membrane protein or as a secreted protein associated with the extracellular matrix. Key words: regeneration; glial scars; chondroitin sulfate proteoglycan; spinal cord injury; NG2; growth cone collapse

Yvonne M. Ughrin; Zhi Jiang Chen; Joel M. Levine

2003-01-01T23:59:59.000Z

15

Web queries with style: Rendering xcerpt programs with css-ng  

E-Print Network (OSTI)

Abstract. Styling and formatting of XML documents for various target media is often specified with the Cascading Style Sheet (CSS) language. An appealing feature of CSS is that it specifies formatting instructions using rather simple guarded rules. A limitation of CSS is that it focuses on static formatting rules. As a consequence scripting languages such as ECMA Script are used in practice for dynamic adaptation of formatting. CSS NG is a novel extension of CSS 3, the newest version of CSS, introducing just a few rules for a dynamic rendering and for markup visualization. This limited extension of CSS 3 turns out to make possible a rather advanced visualization of programs. This article (1) introduces into the extensions of CSS NG with respect to CSS 3, (2) describes a proof-of-concept prototype implementation of CSS NG, and (3) demonstrates CSS NG on Xcerpt query programs. 1

François Bry; Christoph Wieser

2006-01-01T23:59:59.000Z

16

Next Generation * Natural Gas (NG)2 Information Requirements--Executive Summary  

Reports and Publications (EIA)

The Energy Information Administration (EIA) has initiated the Next Generation * Natural Gas (NG)2 project to design and implement a new and comprehensive information program for natural gas to meet customer requirements in the post-2000 time frame.

Information Center

2000-10-01T23:59:59.000Z

17

Ti Plasmid  

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

Ti Plasmid Ti Plasmid Name: Dixenia Location: N/A Country: N/A Date: N/A Question: What can you tell me about the Ti Plasmid? Replies: This plasmid is named for a plasmid found in a bacteria called Agrobacter tumefaciens. It causes "plant cancer" or what are known as galls. They are little tumors in which the bacteria can grow and live in the plant. Ti stands for tumor inducing. The bacterium gets into the plant through some kind of wound, ie. a scratch. It injects its plasmid into a plant cell and the plasmid inserts its DNA into the plant's DNA. Then the DNA directs the plant to make a hollow tumor where the bacteria can live. Scientists have taken advantage of this plant's ability to insert foreign DNA into a plant. They take the genes out of the plasmid that cause galls, and insert genes of interest, ie. genes for pest resistance and let the plasmid carry those genes into the plant. The plant will start making the product you want. You may have seen a picture of a tobacco plant glowing because firefly genes for glowing were inserted into the plant. They did this so they could know if the gene had made it into the plant. Once they are sure the gene they want has made it into the plant, they clone the plant cells. By the way, plant tissue culture is a procedure that is very common and has been done for years, this is not the same as cloning animals.

18

POLICY FLASH 2013-55 FPDS-NG Change Management Notice for the Oklahoma  

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

5 FPDS-NG Change Management Notice for the 5 FPDS-NG Change Management Notice for the Oklahoma Tornado and Storm POLICY FLASH 2013-55 FPDS-NG Change Management Notice for the Oklahoma Tornado and Storm This Flash will be available online at the following website: http://energy.gov/management/office-management/operational-management/procurement-and-acquisition/policy-flashes Questions concerning this policy flash should be directed to Kevin M. Smith, of the Contract and Financial Assistance Policy Division, at Kevin.M.Smith@hq.doe.gov, or at (202) 287-1614. Policy Flash 2013-55_Oklahoma Tornado FPDS.pdf More Documents & Publications Policy Flash 2013-47 Management and Security of Personally Identifiable Information POlicy Flash 2013-60 Policy Flash 2013-74 Quarterly Notification of the DOE's Differing

19

Richard Cantrill, Ph.D.  

Science Conference Proceedings (OSTI)

Director Lab Services, ISO Richard Cantrill, Ph.D. Contact Information contact contact us Richard Cantrill, Ph.D. Chief Science Officer and Technical Director ...

20

LINEAR TO NON-LINEAR RHEOLOGY OF WHEAT FLOUR DOUGH TREVOR S.K. NG1  

E-Print Network (OSTI)

LINEAR TO NON-LINEAR RHEOLOGY OF WHEAT FLOUR DOUGH TREVOR S.K. NG1 , GARETH H. MCKINLEY1 *, MADESH.9.2006 Abstract: We provide an overview of transient extensional rheometry techniques for wheat flour doughs wheat flour; mixed to a constant time (360 s/peak-mixed) and a fixed water ratio by weight (66

Note: This page contains sample records for the topic "ti ng ph" 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

Argonne Leadership Compu2ng Facility www.alcf.anl.gov Katherine Riley  

E-Print Network (OSTI)

Argonne Leadership Compu2ng Facility ­ www.alcf.anl.gov Katherine Riley Manager and feasibility Managed By INCITE management commi^ee (ALCF & OLCF) DOE Office. Communica2on with ALCF is extremely helpful. You can request 2me on Mira

Kemner, Ken

22

Socio-technical aspects of remote media control for a NG9-1-1 system  

Science Conference Proceedings (OSTI)

9-1-1 emergency calls mostly involve distress situations that cause people to panic while trying to answer questions or follow instructions given by a dispatcher. To obtain precious information with the least user intervention and reduced stress on the ... Keywords: Image transmission, Media control, NG9-1-1, PSAP, Remote, SIP, VoIP, Voice quality

Vikram Chandrasekaran; Ram Dantu; Kalyan Pathapati Subbu

2013-02-01T23:59:59.000Z

23

KHALIL AMINE, PH  

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

Nada Dimitrijevic Nada Dimitrijevic Argonne National Laboratory Chemical Sciences and Engineering Division 9700 South Cass Avenue, Building 200 Argonne, IL 60439 phone: 630/252-3590, fax: 630/972-9289 email: dimitrijevic@anl.gov Professional Experience ï‚· Present. Physical Chemist at Argonne National Laboratory, working jointly for the Chemical Sciences and Engineering Division and the Center for Nanoscale Materials. Education ï‚· Ph.D., Physical Chemistry, Belgrade University, Yugoslavia Research Interests ï‚· Synthesis and characterization of colloidal semiconductor nanoparticles ï‚· Focus on 1. semiconductor assisted photocatalysis and solar fuel production by reducing CO2 to methane, and 2. light-induced charge transfer across bio-inorganic interfaces.

24

First performances of the GOLF-NG instrumental prototype observing the Sun in Tenerife  

E-Print Network (OSTI)

The primary challenge of GOLF-NG (Global Oscillations at Low Frequency New Generation) is the detection of the low-frequency solar gravity and acoustic modes, as well as the possibility to measure the high-frequency chromospheric modes. On June 8th 2008, the first sunlight observations with the multichannel resonant GOLF-NG prototype spectrometer were obtained at the Observatorio del Teide (Tenerife). The instrument performs integrated (Sun-as-a-star), Doppler velocity measurements, simultaneously at eight different heights in the D1 sodium line profile, corresponding to photospheric and chromospheric layers of the solar atmosphere. In order to study its performances, to validate the conceived strategy, and to estimate the necessary improvements, this prototype has been running on a daily basis over the whole summer of 2008 at the Observatorio del Teide. We present here the results of the first GOLF-NG observations, clearly showing the characteristics of the 5-minute oscillatory signal at different heights in the solar atmosphere. We compare these signals with simultaneous observations from GOLF/SOHO and from the Mark-I instrument -- a node of the BiSON network, operating at the same site.

D. Salabert; S. Turck-Chieze; J. C. Barriere; P. H. Carton; P. Daniel-Thomas; A. Delbart; R. A. Garcia; R. Granelli; S. J. Jimenez-Reyes; C. Lahonde-Hamdoun; D. Loiseau; S. Mathur; F. Nunio; P. L. Palle; Y. Piret; J. M. Robillot; R. Simoniello

2008-10-19T23:59:59.000Z

25

NG2 proteoglycan promotes endothelial cell motility and angiogenesis via engagement of galectin-3 and ?3?1  

E-Print Network (OSTI)

The NG2 proteoglycan is expressed by microvascular pericytes in newly formed blood vessels. We have used in vitro and in vivo models to investigate the role of NG2 in cross-talk between pericytes and endothelial cells (EC). Binding of soluble NG2 to the EC surface induces cell motility and multicellular network formation in vitro and stimulates corneal angiogenesis in vivo. Biochemical data demonstrate the involvement of both galectin-3 and ?3?1 integrin in the EC response to NG2 and show that NG2, galectin-3, and ?3?1 form a complex on the cell surface. Transmembrane signaling via ?3?1 is responsible for EC motility and morphogenesis in this system. Galectin-3–dependent oligomerization may potentiate NG2-mediated activation of ?3?1. In conjunction with recent studies demonstrating the early involvement of pericytes in angiogenesis, these data suggest that pericyte-derived NG2 is an important factor in promoting EC migration and morphogenesis during the early stages of neovascularization.

Jun-ichi Fukushi; Irwan T. Makagiansar; William B. Stallcup; Martin A. Schwartz

2004-01-01T23:59:59.000Z

26

N.G. Basov and early works on semiconductor lasers at P.N. Lebedev Physics Institute  

Science Conference Proceedings (OSTI)

A survey is presented of works on creation and investigation of semiconductor lasers during 1957 - 1977 at the P.N. Lebedev Physics Institute. Many of these works were initiated by N.G. Basov, starting from pre-laser time, when N.G. Basov and his coworkers formulated principal conditions of creation of lasers on interband transitions in semiconductors. Main directions of further works were diode lasers based on various materials and structures, their characteristics of output power, high-speed operation and reliability. (special issue devoted to the 90th anniversary of n.g. basov)

Eliseev, P G [Centre for High-Technology Materials, University of New Mexico, Albuquerque (United States)

2012-12-31T23:59:59.000Z

27

STATEMENT OF CONSIDERATIONS REQUEs·r BY CASCADE ENGINEERI NG, INC. (CASCADE) FOR AN ADVANCE  

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

REQUEs·r BY CASCADE ENGINEERI REQUEs·r BY CASCADE ENGINEERI NG, INC. (CASCADE) FOR AN ADVANCE WA IVER OF DOMESTIC AND FORE IGN PATENT RIGHTS UNDER DOE AWARD NO. DE-EE0005440; W(A) 201 1-070 CASCAD E has requested a waiver of domesti c and fore ign patent rights of the United States of America in all subject inventions arising from its participation under the above refe renced cooperative agreeme nt entitl ed " Innovative Ballasted Flat Roof Solar PV Racking System." According to the Statement o f Project Objectives, the objectives of the project funded by the cooperative agreement arc to " [ dlesign, develop, engineer, manufacture, and market a flat roof so lar PV racking sys tem. This racking system will o±Ier a cost advantage from a materials and installation labor (mechanical and electrical) perspective. It will be flexible enough to

28

Pond pH Control  

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

Pond pH Control Pond pH Control Name: CLIFTON Location: N/A Country: N/A Date: N/A Question: We have just put in a pond in eastern Ky it is about 400 ft by 150ft the water level is about 6 ft on the low end and about 20ft on the dam end our problem is slate and shale rock the ph is around .That was the soil test before we started digging. What I would like to know is is there anyway to lower the ph and how? Also all the run off to the pond on two sides runs over slate and shale. We were told that if the water was a bright green there was to much acid,and there are a lot of crawdads in this bottom area. Replies: Dear Clifton, re. pH control of ponds, see: http://www.grassrootsnursery.com/answers/h20qual/queswq12.htm There are various pond care companies. Here's one: http://www.pondauthority.com/pondcare.htm

29

Enhancing solar photocatalytic detoxification by adsorption of porphyrins onto TiO sub 2  

DOE Green Energy (OSTI)

Titanium dioxide (TiO{sub 2}) is a known photocatalyst for solar detoxification of water containing organic contaminants including PCB's and dioxins. Unfortunately, the UV light used by the photocatalyst only comprises about 4% of the strong spectrum. Metalloporphyrins strongly absorb in the visible and near infrared region. Using visible light, we have investigated Ni(II) uroporphyrin (NiUroP), Sn(IV)Cl{sub 2} uroporphyrin (SnUroP) and Sn(IV)Cl{sub 2} tetrakis(p-carboxyphenyl) porphyrin (SnTCPP) as possible enhancers of destruction of a model organic compound, salicylic acid (SA), by means of photosensitization of colloidal TiO{sub 2} particles. All three porphyrins are found to adsorb reversibly onto the colloidal TiO{sub 2} upon variation of pH. Adsorption of porphyrins results in the increased colloidal stability of fine TiO{sub 2} particles in the pH range 5--8. While NiUroP on TiO{sub 2} does not show any enhancement of photodestruction, the adsorption of SnUroP increases the destruction rate compared to that of the bare TiO{sub 2} surface. The effect of ambient oxygen on the observed photolability of the Sn porphyrins and enhancement of photodestruction of SA was also investigated. SnTCPP does not photodecompose upon illumination either in the presence or absence of TiO{sub 2}, but neither does it bind to the photocatalyst at pH 6. At pH 4.5 it adsorbs onto TiO{sub 2} but it also photodecompose at this pH. We are attempting to stabilize the adsorbed porphyrins by adding suitable peripheral substituents onto the porphyrin macrocycle. 27 refs., 6 figs.

Majumder, S.A.; Ondrias, M.R. (New Mexico Univ., Albuquerque, NM (United States). Dept. of Chemistry); Prairie, M.R.; Shelnutt, J.A. (Sandia National Labs., Albuquerque, NM (United States))

1991-01-01T23:59:59.000Z

30

Design and implementation of highly modular schemas for XML: customization of RuleML in relax NG  

Science Conference Proceedings (OSTI)

We present a re-conceptualization and re-engineering of the non-SWSL portion of the Derivation Rules subfamily of RuleML in the Relax NG Compact (RNC) schema syntax. The benefits arising from RNC schemas include decreased positional sensitivity and greater ...

Tara Athan; Harold Boley

2011-11-01T23:59:59.000Z

31

Roland Seals, PhD - Energy  

surface using a number of methods such as painting, spraying, dipping, thermal spray, ... Customer Experience • Without TiBorSkin and with traditional corrosion-

32

Boundary Ring: a way to construct approximate NG solutions with polygon boundary conditions: I. Z_n-symmetric configurations  

E-Print Network (OSTI)

We describe an algebro-geometric construction of polygon-bounded minimal surfaces in ADS_5, based on consideration of what we call the "boundary ring" of polynomials. The first non-trivial example of the Nambu-Goto (NG) solutions for Z_6-symmetric hexagon is considered in some detail. Solutions are represented as power series, of which only the first terms are evaluated. The NG equations leave a number of free parameters (a free function). Boundary conditions, which fix the free parameters, are imposed on truncated series. It is still unclear if explicit analytic formulas can be found in this way, but even approximate solutions, obtained by truncation of power series, can be sufficient to investigate the Alday-Maldacena -- BDS/BHT version of the string/gauge duality.

H. Itoyama; A. Mironov; A. Morozov

2007-12-02T23:59:59.000Z

33

Winnie Wong-Ng  

Science Conference Proceedings (OSTI)

... atmosphere. The increased levels are of anthropogenic origin, mostly from coal-fired electrical power generation plants. ...

2013-03-12T23:59:59.000Z

34

NG7 Publications  

Science Conference Proceedings (OSTI)

... DM "Polymer-fullerene mixing in organic solar cells", Macromolecules 2012, 45, 6587-6599. Prabhu, VM; Kang, S.; Sha, J.; Bonnesen, PV; Satija, S ...

35

N,N'-DICYCLOHEXYL-N"-ISOTRIDECYLGUANIDINE AS SUPPRESSOR FOR THE NEXT GENERATION CAUSTIC SIDE SOLVENT EXTRACTION (NG-CSSX) PROCESS  

SciTech Connect

ABSTRACT The purity, concentration, and source of the N,N'-dicyclohexyl-N"-isotridecylguanidine (DCiTG) suppressor (guanidine) used in the NG-CSSX process were found to influence solvent performance. As the starting isotridecanol used in the preparation of DCiTG is comprised of a mixture of branched-chain aliphatic alcohols, varying in composition with manufacturer, the resulting DCiTG itself is a mixture. Thus, it is necessary to address how the solvent performance will be affected by the different preparations of the DCiTG solvent component. In this study, four preparations of DCiTG from three sources were analyzed and evaluated for purity and performance, both in the absence and presence of an anionic surfactant impurity.

Duncan, Nathan C [ORNL; Roach, Benjamin D [ORNL; Williams, Neil J [ORNL; Bonnesen, Peter V [ORNL; Rajbanshi, Arbin [ORNL; Moyer, Bruce A [ORNL

2012-01-01T23:59:59.000Z

36

pH Meter probe assembly  

DOE Patents (OSTI)

An assembly for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe.

Hale, Charles J. (San Jose, CA)

1983-01-01T23:59:59.000Z

37

Karolina Michalska, PhD Student  

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

Education 2002-2007 PhD at Faculty of Chemistry, Adam Mickiewicz University Pozna, Poland Thesis: Crystallographic and biochemical studies of amidohydrolases (in Polish)...

38

pH Meter probe assembly  

DOE Patents (OSTI)

An assembly for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe. 1 fig.

Hale, C.J.

1983-11-15T23:59:59.000Z

39

PSA Nadir of <0.5 ng/mL Following Brachytherapy for Early-Stage Prostate Adenocarcinoma is Associated With Freedom From Prostate-Specific Antigen Failure  

SciTech Connect

Purpose: Because limited information exists regarding whether the rate or magnitude of PSA decline following brachytherapy predicts long-term clinical outcomes, we evaluated whether achieving a prostate-specific antigen (PSA) nadir (nPSA) <0.5 ng/mL following brachytherapy is associated with decreased PSA failure and/or distant metastasis. Methods and Materials: We retrospectively analyzed our database of early-stage prostate adenocarcinoma patients who underwent brachytherapy, excluding those receiving androgen-deprivation therapy and those with <2 years follow-up. Median and mean pretreatment PSA were 6 ng/mL and 7.16 ng/mL, respectively. By clinical stage, 775 were low risk ({<=}T2a), 126 were intermediate risk (T2b), and 20 were high risk (>T2b). By Gleason score, 840 were low risk ({<=}6), 71 were intermediate risk (7), and 10 were high risk (>7). Patients were treated with brachytherapy only (I-125, n = 779, or Pd-103, n = 47), or brachytherapy + external-beam radiation therapy (n = 95). Median follow-up was 6.3 years. We noted whether nPSA <0.5 ng/mL was achieved and the time to achieve this nadir and tested for associations with pretreatment risk factors. We also determined whether this PSA endpoint was associated with decreased PSA failure or distant metastasis. Results: Absence of high-risk factors in clinical stage ({<=}T2b), Gleason score ({<=}7), and pretreatment PSA ({<=}20 ng/mL) was significantly associated with achieving nPSA <0.5 ng/mL. By Kaplan-Meier analysis, patients achieving nPSA <0.5 ng/mL had significantly higher long-term freedom from biochemical failure (FFBF) than nonresponders (5-year FFBF: 95.2 {+-} 0.8% vs. 71.5 {+-} 6.7%; p < 0.0005). Among responders, those who achieved nPSA <0.5 ng/mL in {<=}5 years had higher FFBF than those requiring >5 years (5-year FFBF: 96.7 {+-} 0.7% vs. 80.8 {+-} 4.6%; p < 0.0005). On multivariate analysis, patients who achieved nPSA <0.5 ng/mL in {<=}5 years had significantly higher FFBF than other patients. Conclusions: Pretreatment risk factors (clinical tumor stage, Gleason score, pretreatment PSA) strongly predict for patients achieving nPSA <0.5 ng/mL following brachytherapy, and this cohort had significantly higher long-term FFBF.

Ko, Eric C. [Department of Radiation Oncology, Mount Sinai Medical Center, New York, NY (United States); Stone, Nelson N. [Department of Radiation Oncology, Mount Sinai Medical Center, New York, NY (United States); Department of Urology, Mount Sinai Medical Center, New York, NY (United States); Stock, Richard G., E-mail: Richard.Stock@mountsinai.org [Department of Radiation Oncology, Mount Sinai Medical Center, New York, NY (United States)

2012-06-01T23:59:59.000Z

40

Boundary Ring or a Way to Construct Approximate NG Solutions with Polygon Boundary Conditions. II. Polygons which admit an inscribed circle  

E-Print Network (OSTI)

We further develop the formalism of arXiv:0712.0159 for approximate solution of Nambu-Goto (NG) equations with polygon conditions in AdS backgrounds, needed in modern studies of the string/gauge duality. Inscribed circle condition is preserved, which leaves only one unknown function y_0(y_1,y_2) to solve for, what considerably simplifies our presentation. The problem is to find a delicate balance -- if not exact match -- between two different structures: NG equation -- a non-linear deformation of Laplace equation with solutions non-linearly deviating from holomorphic functions, -- and the boundary ring, associated with polygons made from null segments in Minkovski space. We provide more details about the theory of these structures and suggest an extended class of functions to be used at the next stage of Alday-Maldacena program: evaluation of regularized NG actions.

H. Itoyama; A. Morozov

2007-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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

Transfer of TiN/Ti/Ag metallization research  

Science Conference Proceedings (OSTI)

A simple technology for manufacturing extremely stable silicon solar cells is described. The process uses a sputtering technique to reactively deposit high quality TiN films to be used as diffusion barrier layers in metallization systems. The deposition parameters have been optimized to yield films with low-stress and with resistivities as low as 50..mu.. ohm-cm. The TiN films act as an excellent metal diffusion barrier layer below the contact grid-lines, and also upon controlled oxidation as a good anti-reflection coating of TiO/sub 2/ in the active area of the solar cell. Such a unique and dual application of the TiN layer considerably simplifies the fabrication of the cells. Cells so prepared are found to be stable with no degradation in their electrical performance after heat treatments up to 600/sup 0/C for 15 minutes. The application of TiN films in obtaining stable ohmic contacts to GaAs has also been investigated. Ohmic contacts to p-type GaAs have been formed with GaAs/Pt(mG)/TiN/Ag system, which possess low contact resistivity stable up to 550/sup 0/C heat treatments.

Tandon, J.

1986-05-01T23:59:59.000Z

42

N NE EX XT T G GE EN NE ER RA AT TI IO ON N S SA AF FE EG  

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

NE NE EX XT T G GE EN NE ER RA AT TI IO ON N S SA AF FE EG GU UA AR RD DS S I IN NI IT TI IA AT TI IV VE E ( (N NG GS SI I) ) O OP PP PO OR RT TU UN NI IT TI IE ES S F FO OR R S ST TU UD DE EN NT TS S A AN ND D Y YO OU UN NG G P PR RO OF FE ES SS SI IO ON NA AL LS S I IN NT TE ER RE ES ST TE ED D I IN N S SA AF FE EG GU UA AR RD DS S/ /N NO ON NP PR RO OL LI IF FE ER RA AT TI IO ON N The Next Generation Safeguards Initiative (NGSI) was launched by the National Nuclear Security Administration (NNSA) in FY 2008 to develop the policies, concepts, technologies, expertise, and infrastructure necessary to strengthen and sustain the international safeguards system as it evolves to meet new challenges over the next 25 years. NGSI's Human Capital Development subprogram 1 aims to revitalize and expand the international safeguards human capital base in the United States by attracting, educating, training, and retaining

43

High-Risk Prostate Cancer With Gleason Score 8-10 and PSA Level {<=}15 ng/ mL Treated With Permanent Interstitial Brachytherapy  

SciTech Connect

Purpose: With widespread prostate-specific antigen (PSA) screening, there has been an increase in men diagnosed with high-risk prostate cancer defined by a Gleason score (GS) {>=}8 coupled with a relatively low PSA level. The optimal management of these patients has not been defined. Cause-specific survival (CSS), biochemical progression-free survival (bPFS), and overall survival (OS) were evaluated in brachytherapy patients with a GS {>=}8 and a PSA level {<=}15 ng/mL with or without androgen-deprivation therapy (ADT). Methods and Materials: From April 1995 to October 2005, 174 patients with GS {>=}8 and a PSA level {<=}15 ng/mL underwent permanent interstitial brachytherapy. Of the patients, 159 (91%) received supplemental external beam radiation, and 113 (64.9%) received ADT. The median follow-up was 6.6 years. The median postimplant Day 0 minimum percentage of the dose covering 90% of the target volume was 121.1% of prescription dose. Biochemical control was defined as a PSA level {<=}0.40 ng/mL after nadir. Multiple parameters were evaluated for impact on survival. Results: Ten-year outcomes for patients without and with ADT were 95.2% and 92.5%, respectively, for CSS (p = 0.562); 86.5% and 92.6%, respectively, for bPFS (p = 0.204); and 75.2% and 66.0%, respectively, for OS (p = 0.179). The median post-treatment PSA level for biochemically controlled patients was <0.02 ng/mL. Multivariate analysis failed to identify any predictors for CSS, whereas bPFS and OS were most closely related to patient age. Conclusions: Patients with GS {>=}8 and PSA level {<=}15 ng/mL have excellent bPFS and CSS after brachytherapy with supplemental external beam radiotherapy. The use of ADT did not significantly impact bPFS, CSS, or OS.

Fang, L. Christine [Department of Radiation Oncology, University of Washington, Seattle, WA (United States); Merrick, Gregory S., E-mail: gmerrick@urologicresearchinstitute.org [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV (United States); Butler, Wayne M.; Galbreath, Robert W.; Murray, Brian C.; Reed, Joshua L. [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV (United States); Adamovich, Edward [Department of Pathology, Wheeling Hospital, Wheeling, WV (United States); Wallner, Kent E. [Puget Sound Veterans Affairs Hospital, Seattle, WA (United States)

2011-11-15T23:59:59.000Z

44

Extreme-Risk Prostate Adenocarcinoma Presenting With Prostate-Specific Antigen (PSA) >40 ng/ml: Prognostic Significance of the Preradiation PSA Nadir  

SciTech Connect

Purpose: To examine the impact of patient, disease, and treatment characteristics on survival outcomes in patients treated with neoadjuvant androgen deprivation therapy (ADT) and radical external-beam radiotherapy (RT) for clinically localized, extreme-risk prostate adenocarcinoma with a presenting prostate-specific antigen (PSA) concentration of >40 ng/ml. Methods and Materials: A retrospective chart review was conducted of 64 patients treated at a single institution between 1991 and 2000 with ADT and RT for prostate cancer with a presenting PSA level of >40 ng/ml. The effects of patient age, tumor (presenting PSA level, Gleason score, and T stage), and treatment (total ADT duration and pre-RT PSA level) characteristics on rates of biochemical disease-free survival (bDFS), prostate cancer-specific survival (PCSS), and overall survival (OS) were examined. Results: Median follow-up time was 6.45 years (range, 0.09-15.19 years). Actuarial bDFS, PCSS, and OS rates at 5 years were 39%, 87%, and 78%, respectively, and 17%, 64%, and 45%, respectively, at 10 years. On multivariate analysis, the pre-RT PSA level ({<=}0.1 versus >0.1 ng/ml) was the single most significant prognostic factor for bDFS (p = 0.033) and OS (p = 0.018) rates, whereas age, T stage, Gleason score, and ADT duration ({<=}6 versus >6 months) were not predictive of outcomes. Conclusion: In prostate cancer patients with high presenting PSA levels, >40 ng/ml, treated with combined modality, neoadjuvant ADT, and RT, the pre-RT PSA nadir, rather than ADT duration, was significantly associated with improved survival. This observation supports the use of neoadjuvant ADT to drive PSA levels to below 0.1 ng/ml before initiation of RT, to optimize outcomes for patients with extreme-risk disease.

Alexander, Abraham S. [British Columbia Cancer Agency, Vancouver Island Centre, Radiation Therapy Program, Victoria, British Columbia (Canada); University of British Columbia, Vancouver, British Columbia (Canada); Mydin, Aminudin; Jones, Stuart O.; Christie, Jennifer [British Columbia Cancer Agency, Vancouver Island Centre, Radiation Therapy Program, Victoria, British Columbia (Canada); Lim, Jan T.W. [British Columbia Cancer Agency, Vancouver Island Centre, Radiation Therapy Program, Victoria, British Columbia (Canada); University of British Columbia, Vancouver, British Columbia (Canada); Truong, Pauline T., E-mail: ptruong@bccancer.bc.ca [British Columbia Cancer Agency, Vancouver Island Centre, Radiation Therapy Program, Victoria, British Columbia (Canada); University of British Columbia, Vancouver, British Columbia (Canada); Ludgate, Charles M. [British Columbia Cancer Agency, Vancouver Island Centre, Radiation Therapy Program, Victoria, British Columbia (Canada); University of British Columbia, Vancouver, British Columbia (Canada)

2011-12-01T23:59:59.000Z

45

Direct measurement of the $^{44}$Ti($\\alpha$,p) reaction of importance to supernovae, using reclaimed $^{44}$Ti  

E-Print Network (OSTI)

Direct measurement of the $^{44}$Ti($\\alpha$,p) reaction of importance to supernovae, using reclaimed $^{44}$Ti

CERN. Geneva; Lindroos, Mats; CERN. Geneva. ISOLDE and Neutron Time-of-Flight Experiments Committee; INTC

2007-01-01T23:59:59.000Z

46

Steam Generator Management Program: Pressurized Water Reactor Generic Tube Degradation Predictions: Recirculating Steam Generators with Alloy 600TT, Alloy 690TT, and Alloy 800NG Tubing  

Science Conference Proceedings (OSTI)

Mill-annealed Alloy 600 heat transfer tubing in pressurized water reactor (PWR) steam generators (SGs) has experienced numerous modes of degradation. This report describes predictive models for determining expected tube degradation in recirculating steam generators with Alloy 600TT, Alloy 690TT, and Alloy 800NG tubing. Predictions are based on operating experience with similar designs and use improvement factors to characterize benefits resulting from SG design and material ...

2013-12-17T23:59:59.000Z

47

Nadya A. Fouad, Ph.D Romila Singh, Ph.D  

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

Nadya A. Fouad, Ph.D Nadya A. Fouad, Ph.D Romila Singh, Ph.D University of Wisconsin-Milwaukee WHY WOMEN LEAVE ENGINEERING " There is little to no RESPECT for women in male-dominated fields." " Still getting asked if I can handle being in a mostly male work environment in interviews in 2009 - I've been an engineer for 9 years, obviously I can. I know when I'm asked that question, I HAVE NO CHANCE AT THE JOB . It is nice they brought me in for equal opportunity survey points but don't waste my time if you don't take females seriously." " My current workplace is very WOMAN ENGINEER FRIENDLY. Women get promoted and paid at the same rate as men." " I have to get OUTSIDE OF THE CUBICLE . " " My work for many years at a US national laboratory has provided

48

HVOF Thermal Spray TiC/TiB2 Coatings of AUSC Boiler/Turbine ...  

Science Conference Proceedings (OSTI)

The paper presents the research endeavors to synthesize TiC and TiB2 coatings on existing boiler materials for applications at high temperatures (500 -750 oC) ...

49

Pure rotational spectra of TiO and TiO_2 in VY Canis Majoris  

E-Print Network (OSTI)

We report the first detection of pure rotational transitions of TiO and TiO_2 at (sub-)millimeter wavelengths towards the red supergiant VY CMa. A rotational temperature, T_rot, of about 250 K was derived for TiO_2. Although T_rot was not well constrained for TiO, it is likely somewhat higher than that of TiO_2. The detection of the Ti oxides confirms that they are formed in the circumstellar envelopes of cool oxygen-rich stars and may be the "seeds" of inorganic-dust formation, but alternative explanations for our observation of TiO and TiO_2 in the cooler regions of the envelope cannot be ruled out at this time. The observations suggest that a significant fraction of the oxides is not converted to dust, but instead remains in the gas phase throughout the outflow.

Kaminski, T; Menten, K M; Patel, N A; Young, K H; Brunken, S; Muller, H S P; McCarthy, M C; Winters, J M; Decin, L

2013-01-01T23:59:59.000Z

50

Ris-PhD-19(EN) Self Calibrating Interferometric Sensor  

E-Print Network (OSTI)

Interferometric Sensor Department: Optics and Plasma Research Department Risø-PhD-19(EN) January 2006 This thesis

51

Measurement of pH in high ionic strength solutions  

DOE Patents (OSTI)

A practical method is described for measuring pH in solutions of high ionic strength (e.g., brines, process solutions). The pH is determined by integratively measuring the potential due to H{sup +} and the potential due to another cation or anion and relating the combined electrical potential to a calculated pH for high ionic strength solutions.

Knauss, K.G.; Wolery, T.J.; Jackson, K.J.

1991-12-31T23:59:59.000Z

52

Spring 2011 1 Ph.D. Handbook SOCIAL WELFARE  

E-Print Network (OSTI)

Spring 2011 1 Ph.D. Handbook SCHOOL OF SOCIAL WELFARE DOCTOR OF PHILOSOPHY IN SOCIAL WORK Degree Requirements and Policy Handbook Spring, 2011 The University of Kansas School of Social Welfare 1545 Lilac Lane Lawrence, Kansas 66045-3129 (785) 864-8976 www.ku.edu #12;Spring 2011 2 Ph.D. Handbook #12;Spring 2011 3 Ph

Peterson, Blake R.

53

Un~ted States Env~ronmental Monltor~ng EPA.600 '4-88, 021 Envtronmental Protect~on Systems Laboratory DOE/OP/00539/060  

Office of Legacy Management (LM)

Env~ronmental Monltor~ng EPA.600 '4-88, 021 Env~ronmental Monltor~ng EPA.600 '4-88, 021 Envtronmental Protect~on Systems Laboratory DOE/OP/00539/060 Agency P 0. Box 93478 June 1988 Las Vegas NV 89193-5478 Research and Development Off-Site Environmental Monitoring Report Radiation Monitoring Around United States 1 ' 7 L 8 f Nuclear Test Areas This page intentionally left blank EPA-60014-88-021 DOE/DPI0053?-060 May 1988 OFF-SITE ENVIRONMENTAL MONITORING REPORT R a d i a t i o n M o n i t o r i n g Around U n i t e d States Nuclear Test Areas, Calendar Year 1987 c o n t r i b u t o r s - C . A . Fontana, N . R . Sunderland S. C. Black, B. B. Dicey, A. N. J a r v i s D. D . Smith, D. J. Thorn6 A . A . Mullen, and Nuclear R a d i a t i o n Assessment D i v i s i o n prepared f o r t h e U.S. Department o f Energy under I n t e r a g e n c y Agreement Number DE-AI08-86NV10522

54

Estimation of coolant void reactivity for CANDU-NG lattice using DRAGON and validation using MCNP5 and TRIPOLI-4.3  

Science Conference Proceedings (OSTI)

The Coolant Void Reactivity (CVR) is an important safety parameter that needs to be estimated at the design stage of a nuclear reactor. It helps to have an a priori knowledge of the behavior of the system during a transient initiated by the loss of coolant. In the present paper, we have attempted to estimate the CVR for a CANDU New Generation (CANDU-NG) lattice, as proposed at an early stage of the Advanced CANDU Reactor (ACR) development. We have attempted to estimate the CVR with development version of the code DRAGON, using the method of characteristics. DRAGON has several advanced self-shielding models incorporated in it, each of them compatible with the method of characteristics. This study will bring to focus the performance of these self-shielding models, especially when there is voiding of such a tight lattice. We have also performed assembly calculations in 2 x 2 pattern for the CANDU-NG fuel, with special emphasis on checkerboard voiding. The results obtained have been validated against Monte Carlo codes MCNP5 and TRIPOLI-4.3. (authors)

Karthikeyan, R.; Tellier, R. L.; Hebert, A. [Ecole Polytechnique de Montreal, 2900 Boulevard Edouard-Montpetit, Montreal, Que. H3T 1J4 (Canada)

2006-07-01T23:59:59.000Z

55

PH Awareness presentation quad city jan 2004  

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

Arvind Thekdi - Arvind Thekdi - E3M, Inc. Corn refining Industry Web Cast 030805 Introduction to Energy Savings in Process Heating for the Corn Refining Industry Web-Cast Presentation By Arvind C. Thekdi, Ph.D. President E3M, Inc. March 8, 2005 2 Arvind Thekdi - E3M, Inc. Corn refining Industry Web Cast 030805 Energy Cost in Corn Refining Industries Operations * Corn processing is very energy intensive * Energy costs are the largest operating cost for the wet corn milling industry, next only to the cost of corn. * Corn wet milling uses 15% of all energy used by the food and kindred products sector of U.S. manufacturing * For a typical plant processing 100,000 bushels per day, energy cost is approximately 25 to 35 million dollars per year. * This represents $0.75 to $1.50 cost per bushel of corn

56

Gamma TiAl Alloys 2014  

Science Conference Proceedings (OSTI)

Jul 15, 2013... for selective laser melting – from single track to fully dense specimens ... Rolling and Grinding of Thin Sheets of Beta-Solidified Gamma TiAl ...

57

TiC x N 1-x Eutectic Composite Prepared by  

Science Conference Proceedings (OSTI)

Presentation Title, Microstructure and Mechanical Property of TiB2-TiCxN1-x ... TiB2, TiC and TiN powders in N2 atmosphere at 60  ...

58

Development of a Continuous Process to Produce Ti via ...  

Science Conference Proceedings (OSTI)

Presentation Title, Development of a Continuous Process to Produce Ti via Metallothermic Reduction of TiCl4 in Molten Salt. Author(s), David Steyn van Vuuren, ...

59

Fabrication of High Strength Pure Ti Matrix Composite Reinforced ...  

Science Conference Proceedings (OSTI)

Carbon black particles were added for the in situ formation of TiC dispersoids during the SPS process. Sponge and fine Ti powders were coated with carbon ...

60

Optimization of Ti addition in Fe for Fe-Ti-N thin films  

Science Conference Proceedings (OSTI)

In this work we studied the magnetic and structural properties of Fe{sub 1-x}Ti{sub x}(x=0, 0.02, 0.05, 0.07) thin films prepared with dc-magnetron sputtering. It was found that the inter-atomic spacing increases as the amount of Ti is increased indicating that Ti is getting dissolved substitutionally in Fe lattice. We found that the addition of 5% Ti is best suited for its usage in Fe-Ti-N alloys.

Tayal, Akhil; Gupta, Mukul; Gupta, Ajay; Stahn, Jochen; Horisberger, M. [UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore, 452001 (India); Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen PSI (Switzerland); Laboratory for Developments and Methods, Paul Scherrer Institut, CH-5232 Villigen PSI (Switzerland)

2012-06-05T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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

AOCS Official Method Ti 1a-64  

Science Conference Proceedings (OSTI)

Spectrophotometric Determination of Conjugated Dienoic Acid AOCS Official Method Ti 1a-64 Methods and Analyses Methods Downloads Methods Downloads Official Method BE2786ABB98768E1DCF0ACFD1AE2520C MC-TI1A64 16847

62

Generators Yu.N. Barmakov, N.G. Ignatiev, B.D. Lemeshko, V.I. Mikerov, and D.I. Yurkov  

National Nuclear Security Administration (NNSA)

1(b): Techniques for Dynamic Experiments 1(b): Techniques for Dynamic Experiments Research of Possibility of Radiography in Fast Neutrons by Use of Portable Neutron Generators Yu.N. Barmakov, N.G. Ignatiev, B.D. Lemeshko, V.I. Mikerov, and D.I. Yurkov FSUE All-Russian Research Institute of Automatics Russia, Moscow, Suschevskaya st. 22, PO Box: 127055, web site: www.vniia.ru Neutron portable generators are one of the sources, generating neutron and X-ray radiations at one time. Those distinguish with rather small size of radiating area (~1mm), and, also, with wide ranges of radiation time spans (starting with continuous radiation and ending with pulses having »25 ns width). Just mentioned features, in general, provide wide range of generators possible practical applications, and, particularly, application in research

63

SITEWIDE CATEGORICAL EXCLUSION fOR SITING, CONSTRUCI1NG, MODIFYING, AND OPERATING SMALL-SCALE STRUcrURES, PACIfiC  

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

3 3 SITEWIDE CATEGORICAL EXCLUSION fOR SITING, CONSTRUCI1NG, MODIFYING, AND OPERATING SMALL-SCALE STRUcrURES, PACIfiC NORTHWEST NATIONAL LABORATORY, RICHLAND, WASHINGTON Proposed Action: The U.S. Department of Energy (DOE) Pacific Northwest Site Office (PNSO) proposes to site, construct, modify, and operate small-scale support buildings and structures. Location of Action: The proposed action would occur on the Pacific Northwest National Laboratory (PNNL) Site and in the vicinity ofPNNL facilities in the State of Washington. Description of tbe Proposed Action: DOE proposes to site, construct, modify, and/or operate small-scale support structures. Siting and construction activities would generally be limited to small facilities and support structures, such as parking areas and storage facilities, that are within or

64

Stress-induced martensitic transformations in NiTi and NiTi-TiC composites investigated by neutron diffraction  

SciTech Connect

Superelastic NiTi (51.0 at% Ni) with 0, 10 and 20 vol% TiC particles were deformed under uniaxial compression as neutron diffraction spectra were simultaneously obtained. The experiments yielded in-situ measurements of the thermoelastic stress-induced transformation. A detailed Rietveld determination is made of the phase fractions and the evolving strains in the reinforcing TiC particles and the austenite as it transforms to martensite on loading (and its subsequent back transformation on unloading). These strains are used to shed light on the phenomenon of load transfer in composites where the matrix undergoes a stress-induced phase transformation.

Vaidyanathan, R. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Materials Science and Engineering; Bourke, M.A.M. [Los Alamos National Lab., NM (United States); Dunand, D.C. [Northwestern Univ., Evanston, IL (United States)

1998-12-31T23:59:59.000Z

65

(PhD), Metallurgical Engineering, University of Utah  

Science Conference Proceedings (OSTI)

Abstract Scope, I am Meenakshisundaram Ramanathan, doing my PhD in Metallurgical Engineering at the University of Utah, Salt Lake City, USA, under the ...

66

Phase Field Simulation of Ni4Ti3 Precipitation in Porous NiTi Shape ...  

Science Conference Proceedings (OSTI)

Generally, porous NiTi alloys may undergo thermomechnical treatment which .... of First Derivative of Dilatation in Low Carbon Steels Multi-Phase Presenting.

67

Low Cost TiOLow Cost TiO22 NanoparticlesNanoparticles  

uniform TiO2 nanoparticles show great potential in numerous markets, including lighting, signage, automotive and solar energy for their excellent

68

Synthesis of Ti/TiC Composites by Mechanical Milling Followed by ...  

Science Conference Proceedings (OSTI)

carbon nanotubes were subjected to high energy ball milling followed by spark plasma sintering (SPS) to synthesize Ti composite reinforced with in-situ formed ...

69

Hydrothermal Growth of the TiO2 Nanowire Array on Ti Plates for the ...  

Science Conference Proceedings (OSTI)

Applications of the aligned TiO2 nanowire array were studied in both the photoanalytic mineralization of acetone, benzene and dye molecules in water and the ...

70

Activity-based protein profiling of secreted cellulolytic enzyme activity dynamics in Trichoderma reesei QM6a, NG14, and RUT-C30  

Science Conference Proceedings (OSTI)

Development of alternative, non-petroleum based sources of bioenergy that can be applied in the short-term find great promise in the use of highly abundant and renewable lignocellulosic plant biomass.1 This material obtained from different feedstocks, such as forest litter or agricultural residues, can yield liquid fuels and other chemical products through biorefinery processes.2 Biofuels are obtained from lignocellulosic materials by chemical pretreatment of the biomass, followed by enzymatic decomposition of cellulosic and hemicellulosic compounds into soluble sugars that are converted to desired chemical products via microbial metabolism and fermentation.3, 4 To release soluble sugars from polymeric cellulose multiple enzymes are required, including endoglucanase, exoglucanase, and ?-glucosidase.5, 6 However, the enzymatic hydrolysis of cellulose into soluble sugars remains a significant limiting factor to the efficient and economically viable utilization of lignocellulosic biomass for transport fuels.7, 8 The primary industrial source of cellulose and hemicellulases is the mesophilic soft-rot fungus Trichoderma reesei,9 having widespread applications in food, feed, textile, pulp, and paper industries.10 The genome encodes 200 glycoside hydrolases, including 10 cellulolytic and 16 hemicellulolytic enzymes.11 The hypercellulolytic catabolite derepressed strain RUT-C30 was obtained through a three-step UV and chemical mutagenesis of the original T. reesei strain QM6a,12, 13 in which strains M7 and NG14 were intermediate, having higher cellulolytic activity than the parent strain but less activity and higher catabolite repression than RUT-C30.14 Numerous methods have been employed to optimize the secreted enzyme cocktail of T. reesei including cultivation conditions, operational parameters, and mutagenesis.3 However, creating an optimal and economical enzyme mixture for production-scale biofuels synthesis may take thousands of experiments to identify.

Anderson, Lindsey N.; Culley, David E.; Hofstad, Beth A.; Chauvigne-Hines, Lacie M.; Zink, Erika M.; Purvine, Samuel O.; Smith, Richard D.; Callister, Stephen J.; Magnuson, Jon M.; Wright, Aaron T.

2013-12-01T23:59:59.000Z

71

Method for producing rapid pH changes  

DOE Patents (OSTI)

A method of initiating a rapid pH change in a solution by irradiating the solution with an intense flux of electromagnetic radiation of a frequency which produces a substantial pK change to a compound in solution. To optimize the resulting pH change, the compound being irradiated in solution should have an excited state lifetime substantially longer than the time required to establish an excited state acid-base equilibrium in the solution. Desired pH changes can be accomplished in nanoseconds or less by means of picosecond pulses of laser radiation.

Clark, John H. (Los Alamos, NM); Campillo, Anthony J. (Los Alamos, NM); Shapiro, Stanley L. (Los Alamos, NM); Winn, Kenneth R. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

72

Fiuza wins EPS Plasma Physics Ph.D. Research Award  

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

04232013 Fiuza wins EPS Plasma Physics Ph.D. Research Award Breanna Bishop, LLNL, (925) 423-9802, bishop33@llnl.gov Printer-friendly Frederico Fiuza High Resolution...

73

Optical pH Sensors for High Temperature Environments  

Science Conference Proceedings (OSTI)

A novel pH measurement system based on remote absorption spectroscopy via two uni-directional optical fibers has been developed for use in cooling water sampling lines in power plants. The system was designed to operate at 200 degrees Celsius (392 degrees Fahrenheit) and 1379 kPa (200 psi) and, so far, has been shown to measure reproducibly the pH of a flowing stream at room temperature and 1379 kPa (200 psi).

2000-11-28T23:59:59.000Z

74

PWR Field Experience with Elevated, Constant pH  

Science Conference Proceedings (OSTI)

This report analyzes chemistry data from several pressurized water reactors (PWRs) operating reactor coolant with elevated, constant pH to determine its effectiveness for managing core performance and dose rate problems stemming from corrosion product and activity transport. The operating data are supplemented with relevant shutdown and startup experience to identify the overall impact of elevated, constant pH on primary system operation.

2001-12-06T23:59:59.000Z

75

TiSol | Open Energy Information  

Open Energy Info (EERE)

TiSol TiSol Jump to: navigation, search Name TiSol Place Pasadena, California Sector Solar Product California-based start up focused on the production of dye sensitized solar cells. Coordinates 29.690847°, -95.196308° 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":29.690847,"lon":-95.196308,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

76

Chemical Coagulation of Radioactive Wastes at High pH  

SciTech Connect

The waste treatment facility at Mound Laboratory was recently modified for the treatment of plutonium-bearing wastes. Prior to July 1, 1975, the facility had been run at pH 8.8; however, since the plant was modified it has been run at pH 11.3 with different chemical dosages. The improvement in effluent quality using the higher pH process (pH 11.3) has been dramatic. Prior to the changeover, the system effluent activity levels ranged from 2-3 dis/min/ml (9-14x10 to the minus 4 uCi/1) specific 238Pu; after the changeover effluent activity levels ranged from 0.3-0.5 dis/min/ml (1.4-2.3x10 to the minus 4 uCi/1) specific 238Pu. Total activity discharged (on a monthly basis) has been cut by more than a factor of 2, because of the changeover to the high pH process. Effluent levels are about as low as can be obtained in this type of waste treatment process.

Koenst, J. W.; Blane, D. E.

1976-06-01T23:59:59.000Z

77

The Production Rate and Employment of Ph.D. Astronomers  

E-Print Network (OSTI)

In an effort to encourage self-regulation of the astronomy job market, I examine the supply of, and demand for, astronomers over time. On the supply side, I document the production rate of Ph.D. astronomers from 1970 to 2006 using the UMI Dissertation Abstracts database, along with data from other independent sources. I compare the long-term trends in Ph.D. production with federal astronomy research funding over the same time period, and I demonstrate that additional funding is correlated with higher subsequent Ph.D. production. On the demand side, I monitor the changing patterns of employment using statistics about the number and types of jobs advertised in the AAS Job Register from 1984 to 2006. Finally, I assess the sustainability of the job market by normalizing this demand by the annual Ph.D. production. The most recent data suggest that there are now annual advertisements for about one postdoctoral job, half a faculty job, and half a research/support position for every new domestic Ph.D. recipient in astronomy and astrophysics. The average new astronomer might expect to hold up to 3 jobs before finding a steady position.

Travis S. Metcalfe

2007-12-17T23:59:59.000Z

78

Stabilization of Mercury in High pH Tank Sludges  

Science Conference Proceedings (OSTI)

DOE complex contains many tank sludges contaminated with mercury. The high pH of these tank sludges typically fails to stabilize the mercury, resulting in these radioactive wastes also being characteristically hazardous or mixed waste. The traditional treatment for soluble inorganic mercury species is precipitation as insoluble mercuric sulfide. Sulfide treatment and a commercial mercury-stabilizing product were tested on surrogate sludges at various alkaline pH values. Neither the sulfide nor the commercial product stabilized the mercury sufficiently at the high pH of the tank sludges to pass the Toxicity Characteristic Leach Procedure (TCLP) treatment standards of the Resource Conservation and Recovery Act (RCRA). The commercial product also failed to stabilize the mercury in samples of the actual tank sludges.

Spence, R.; Barton, J.

2003-02-24T23:59:59.000Z

79

Measurement and control of pH in hydrothermal solutions  

SciTech Connect

Hydrogen-electrode concentration cells with liquid junction are routinely used to measure the pH of aqueous solutions from 0 to 300 C. Results include the dissociation constants of common acids and bases and the hydrolysis and complexation of metal ions in aqueous electrolytes over a wide range of salinities. Recently, we have utilized these cells to examine the sorption of H{sup +} on mineral surfaces, the solubility of minerals with continuous in situ pH measurement, and the thermal decompositon rates of organic acids.

Wesolowski, D.J.; Palmer, D.A.; Mesmer, R.E.

1995-12-31T23:59:59.000Z

80

Harvard Medical School M.D.-Ph.D. Class of 2012 Harvard Medical School M.D.-Ph.D. Class of 2012 Har-vard Medical School M.D.-Ph.D. Class of 2012 Harvard Medical School M.D.-Ph.D. Class of 2012 Harvard  

E-Print Network (OSTI)

Harvard Medical School M.D.-Ph.D. Class of 2012 Harvard Medical School M.D.-Ph.D. Class of 2012 Har- vard Medical School M.D.-Ph.D. Class of 2012 Harvard Medical School M.D.-Ph.D. Class of 2012 Harvard Medical School M.D.-Ph.D. Class of 2012 Harvard Medical School M.D.-Ph.D. Class of 2012 Harvard Medi- cal

Datta, Sandeep Robert

Note: This page contains sample records for the topic "ti ng ph" from the National Library of EnergyBeta (NLEBeta).
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81

Harvard Medical School M.D.-Ph.D. Class of 2013 Harvard Medical School M.D.-Ph.D. Class of 2013 Har-vard Medical School M.D.-Ph.D. Class of 2013 Harvard Medical School M.D.-Ph.D. Class of 2013 Harvard  

E-Print Network (OSTI)

Harvard Medical School M.D.-Ph.D. Class of 2013 Harvard Medical School M.D.-Ph.D. Class of 2013 Har- vard Medical School M.D.-Ph.D. Class of 2013 Harvard Medical School M.D.-Ph.D. Class of 2013 Harvard Medical School M.D.-Ph.D. Class of 2013 Harvard Medical School M.D.-Ph.D. Class of 2013 Harvard Medi- cal

Datta, Sandeep Robert

82

High-resolution ion mobility measurements Ph. Dugourd,a)  

E-Print Network (OSTI)

High-resolution ion mobility measurements Ph. Dugourd,a) R. R. Hudgins, D. E. Clemmer,b) and M. F; accepted for publication 28 October 1996 Gas phase ion mobility measurements can resolve structural isomers for polyatomic ions and provide information about their geometries. A new experimental apparatus for performing

Clemmer, David E.

83

NUCLEAR SCIENCE PUBLICATIONS OF ROBERT B. WEISENMILLER, PH.D.  

E-Print Network (OSTI)

1 NUCLEAR SCIENCE PUBLICATIONS OF ROBERT B. WEISENMILLER, PH.D. 1. Two-proton Pickup Studies, K. H. Wilcox, G. J. Wozniak, M. S. Zisman, and J. Cerny. Nuclear Physics A 280, 217. 1977. 3 Spectroscopic Measurement via Exotic Nuclear Rearrangement: The Reaction 26 Mg (7 Li, 8 B), 25 Ne. With K. H

84

Ph.D.Thesis Binary inversion of gravity  

E-Print Network (OSTI)

Ph.D.Thesis Binary inversion of gravity data for salt imaging Richard A. Krahenbuhl Center for Gravity, Electrical & Magnetic Studies Colorado School of Mines Department of Geophysics Colorado School of gravity data for salt imaging Richard A. Krahenbuhl Center for Gravity, Electrical & Magnetic Studies

85

PPrrooggrraamm FFaaccuullttyy Ning Chen, PhD, Professor  

E-Print Network (OSTI)

Engineering and Management Dorota Huizinga, PhD, Professor Computer Science · Operating systems · Mobile and Management, and System Integration. CPSC 542 - Software Verification and Validation Covers the theory of maintaining large scale software and application of maintenance metrics. Also some management issues

de Lijser, Peter

86

Evaluation of coagulant aids at high pH  

SciTech Connect

A series of tests was run on influent to the waste treatment facility, using various polyelectrolytes and organic polymeric coagulant aids. The influent wastewater originates in chemical process areas, janitorial sinks, process-area locker room showers, floor drains, and from the laundry. Previous tests on this waste had shown that Fe{sup +3} and Ca{sup +2} at pH 11.3 gave improved product quality. However, a suitable coagulant aid for use at high pH`s was needed to obtain a rapid settling rate in the flocculation/sedimentation process. Results of the tests showed that Nalco-C627 gave a good decontamination factor while yielding rapid settling rates. Betz-1175 gave the best decontamination factors; however, its settling rate needs to be improved. Test results revealed decontamination was greater at pH 11.3 than at pH 10.1. It is recommended at this time, that Nalco-C627 be used with the Fe{sup +3}, Ca{sup +2} high pH system, and that further tests be performed on the Betz-1175.

Koenst, J.W.; Blane, D.E.

1976-04-30T23:59:59.000Z

87

PhD Chemical Engineering MS Chemical Engineering  

E-Print Network (OSTI)

1 PhD Chemical Engineering MS Chemical Engineering Bylaws Gene and Linda Voiland School of ChemicalD Chemical Engineering, MS Chemical Engineering B. Discipline: Edgar, et al.1 provide a succinct description of chemical engineering: "chemical engineers seek to understand, manipulate, and control the molecular basis

Collins, Gary S.

88

For more information please contact; PhD-candidate  

E-Print Network (OSTI)

using an historical perspective on industry transition towards energy efficiency in terms of both production but also the supply of energy efficient solutions (typically through policy and market on industrial change and energy efficiency These are purely possible outputs and will be subject to change. A Ph

Sussex, University of

89

SANS for Biology William T. Heller, Ph.D.  

E-Print Network (OSTI)

SANS for Biology A Tutorial William T. Heller, Ph.D. SNS-HFIR Users Meeting October 10, 2007 #12 probed Detector: Collects the neutrons scattered by the sample SNS and HFIR have large area detectors #12;SANS Instruments The HFIR SANS instrument control program is based on Spice, originally developed

90

Energy Demand Modelling Introduction to the PhD project  

E-Print Network (OSTI)

Energy Demand Modelling Introduction to the PhD project Erika Zvingilaite Risø DTU System Analysis for optimization of energy systems Environmental effects Global externalities cost of CO2 Future scenarios for the Nordic energy systems 2010, 2020, 2030, 2040, 2050 (energy-production, consumption, emissions, net costs

91

Contact Information Thomas V. O'Halloran, PhD  

E-Print Network (OSTI)

. These services include training on a variety of instruments, sample preparation and analysis, experiment design) 491-5060 t-ohalloran@northwestern.edu Technical Staff Rebecca Marvin, PhD Facility Manager ICP://www.qbic.northwestern.edu and click on the link to sign up for a training session. #12;Inductively Coupled Plasma Mass Spectrometry

Grzybowski, Bartosz A.

92

Information science in a Ph.D. computer science program  

Science Conference Proceedings (OSTI)

This report contains recommendations on a sample course curriculum in the general area of information organization and information system design in a Ph.D. Computer Science Program. The subject area is first briefly described, followed by a listing of ... Keywords: computer science curriculum, course curriculum, data retrieval, graduate courses, information organization, information processing, information retrieval, information science, language analysis, university courses

G. Salton

1969-02-01T23:59:59.000Z

93

PARTICIPANT LIST Susan G. Amara, Ph.D.  

E-Print Network (OSTI)

@cell.com Daniela Brunner, Ph.D. Senior Vice President Behavioral R&D PsychoGenics 765 Old Saw Mill RIver Road of Health Ronald Crystal, M.D. Chairman Department of Genetic Medicine Weill Cornell Medical College 1305

94

Requirements, Page 1 CLINICAL CHILD PSYCHOLOGY PH.D.  

E-Print Network (OSTI)

the program in addition to regular evaluation in courses, practica, and yearly faculty review. Students work closely with program faculty mentors in research and clinical work with an array of topics and problemsRequirements, Page 1 CLINICAL CHILD PSYCHOLOGY PH.D. GRADUATE PROGRAM REQUIREMENTS

Peterson, Blake R.

95

Requirements, Page 1 CLINICAL CHILD PSYCHOLOGY PH.D.  

E-Print Network (OSTI)

, and yearly faculty review. Students work closely with program faculty mentors in research and clinical workRequirements, Page 1 CLINICAL CHILD PSYCHOLOGY PH.D. GRADUATE PROGRAM REQUIREMENTS AN INTERDEPARTMENTAL PROGRAM OF THE DEPARTMENT OF PSYCHOLOGY & DEPARTMENT OF APPLIED BEHAVIORAL SCIENCE PROGRAM

Peterson, Blake R.

96

Measurement of the 44Ti(alpha,p)47V reaction cross section, of relevance to gamma-ray observation of core collapse supernovae, using reclaimed 44Ti.  

E-Print Network (OSTI)

Measurement of the 44Ti(alpha,p)47V reaction cross section, of relevance to gamma-ray observation of core collapse supernovae, using reclaimed 44Ti.

Murphy, AStJ; Ayranov, M; Bastin, B; Bemmerer, D; Bingham, R; Bunka, M; Butler, P; Catherall, R; Cocolios, TE; Davinson, T; Delahaye, P; Dorsival, A; Dressler, R; van Duppen, P; Fallis, J; Fox, S; Fulton, BR; Kowalska, M; Laird, A; Lotay, G; Saint Laurent, MG; Marin, A; Mendonca1, JT; de Oliveira, F; Roger, T; Ruiz, C; Sahin, L; Schumann, D; de Sereville1, N; Sorlin, O; Stora, T; Traykov, E; Voulot, D; Wang, C HT; Wenander, FJC; Woods, PJ

2012-01-01T23:59:59.000Z

97

Oral Histories: Biophysicist Robert E. Rowland, Ph.D.  

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

1 1 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Biophysicist Robert Edmund Rowland, Ph.D. Conducted January 27, 1995 United States Department of Energy Office of Human Radiation Experiments June 1995 CONTENTS Foreword Short Biography From College to Argonne National Laboratory Initial Argonne Interest in Elgin State Hospital Early Radium Injections at Elgin State Hospital Radium Studies by Argonne National Laboratory Medical Treatments Using Radium Research Into How Radium Deposits in Bone To University of Rochester for a Ph.D. Wartime Plutonium Injection by Metallurgical Laboratory Staff Director of the Radiological and Environmental Research Division Establishment of the National Center for Human Radiobiology Making Contact With Radium Cases for Follow-up

98

NREL: Biomass Research - Edward J. Wolfrum, Ph.D.  

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

Edward J. Wolfrum, Ph.D. Edward J. Wolfrum, Ph.D. Photo of Edward J. Wolfrum I am a Senior Researcher and Manager at the National Renewable Energy Laboratory's National Bioenergy Center in Golden, Colorado. I have experience in the technical management of research projects for both governmental and private clients, including financial management, training and supervision of research staff, subcontract monitoring, and general laboratory management. I currently lead the Biomass Compositional Analysis section, a team of more than a dozen researchers and technicians providing analytical chemistry support to both internal and external clients. Our section is best known for our publicly available Laboratory Analytical Procedures (LAPS), which provide detailed methods for the summative analysis of biomass materials.

99

Oral Histories: Biochemist Waldo E. Cohn, Ph.D.  

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

4 4 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Biochemist Waldo E. Cohn, Ph.D. Conducted January 18, 1995 United States Department of Energy Office of Human Radiation Experiments June 1995 CONTENTS Foreword Short Biography Recruited for the Metallurgical Laboratory (1943) Isolating Fission Products at Wartime Oak Ridge Use of Cyclotron-Produced Radiophosphorus for Ph.D. Research and Cancer Therapy Push to Find Commercial Uses for Crocker Lab's Radioisotopes (1940s) Calculating the Toxic Effects of Inhaled Radioisotopes (Mid-1940s) Oak Ridge Graphite Reactor Becomes a Postwar Source of Radioisotopes Work With Aebersold to Create the Isotopes Distribution Committee (1946) General Groves's Relations With the Scientists Transfer to the Oak Ridge Biology Division (1947)

100

A Review Corrosion of TI Grade 7 and Other TI Alloys in Nuclear Waste Repository Environments  

DOE Green Energy (OSTI)

Titanium alloy degradation modes are reviewed in relation to their performance in repository environments. General corrosion, localized corrosion, stress corrosion cracking, hydrogen induced cracking, microbially influenced corrosion, and radiation-assisted corrosion of Ti alloys are considered. With respect to the Ti Grade 7 drip shields selected for emplacement in the repository at Yucca Mountain, general corrosion, hydrogen induced cracking, and radiation-assisted corrosion will not lead to failure within the 10,000 year regulatory period; stress corrosion cracking (in the absence of disruptive events) is of no consequence to barrier performance; and localized corrosion and microbially influenced corrosion are not expected to occur. To facilitate the discussion, Ti Grades 2, 5, 7, 9, 11, 12, 16, 17, 18, and 24 are included in this review.

F. Hua; K. Mon; P. Pasupathi; G. Gordon

2004-05-11T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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

Structural Competition and Phase Transformations in Binary Ti-Nb ...  

Science Conference Proceedings (OSTI)

Structural Competition and Phase Transformations in Binary Ti-Nb Alloys for Biomedical Applications · Structure and Fracture Resistance of Armored Fish Scales.

102

Novel and NiTi-based Shape Memory Alloys  

Science Conference Proceedings (OSTI)

Mar 4, 2013 ... Phase Constitution, Mechanical and Shape Memory Properties of (Pt,Co)Ti Alloys: Hideki Hosoda1; Satoshi Tsutsumi1; Masaki Tahara1; ...

103

Morphological Evaluation of Osteoblast-TiO2 Nanotube Interfaces  

Science Conference Proceedings (OSTI)

A Comparative Study of the Compressive Mechanical Properties of Young and ... of Ti-6Al-4V for Medical Applications after Surface Modification by Anodization.

104

Stress Corrosion Cracking Threshold of Ti 6-4 Extrusions  

Science Conference Proceedings (OSTI)

Ti 6Al-4V extrusions with standard chemistry and extra low interstitial are evaluated for their stress corrosion cracking resistance. Also examined is the affect of ...

105

Processing and Mechanical Properties of Ti foams - Programmaster ...  

Science Conference Proceedings (OSTI)

Presentation Title, Processing and Mechanical Properties of Ti foams. Author(s), Faming Zhang, Eileen Otterstein, Eberhard Burkel. On-Site Speaker (Planned) ...

106

Electrical Conductance of Single TiO2 Nanotube Devices  

Science Conference Proceedings (OSTI)

As fabricated TiO2 nanotubes with different wall thicknesses were annealed either in ... carbon foam saturated with SiO2 aerogel for heat insulation purposes.

107

Emerging Robust Beta Gamma TiAl Alloys  

Science Conference Proceedings (OSTI)

Recently a new class of TiAl based alloy system, called beta gamma, that ... Phase-Field Simulation on Phase Transformation during Creep Deformation in Type ...

108

Atomic Layer Deposition of TiO2  

Science Conference Proceedings (OSTI)

Scanning electron microscopy (SEM) was performed on TiO2-coated nanoporous alumina membranes using an S4700 microscope (Hitachi, Tokyo, Japan) with ...

109

Low Cost TiO2 Nanoparticles - Energy Innovation Portal  

Solar Photovoltaic Advanced Materials Low Cost TiO2 Nanoparticles Sandia National Laboratories. Contact SNL About This Technology Publications: Market ...

110

Lessons Learned in Sputtering TiNi Thin Film  

Science Conference Proceedings (OSTI)

Experimental results have been published in journals and conference proceedings, but as yet TiNi thin film is not commercially available. The author and ...

111

Synthesis of CdSe -- TiO2 Nanocomposites and Their Applications to TiO2 Sensitized Solar Cells  

Science Conference Proceedings (OSTI)

CdSe-TiO{sub 2} nanocomposites were synthesized via aminolysis of Ti-oleate complexes in the presence of CdSe nanocrystals, and their application as sensitizers for TiO{sub 2} solar cells was investigated. The formation of CdSe-TiO{sub 2} nanocomposites was confirmed using transmission electron microscopy and Raman spectroscopy. The emission spectrum of CdSe-TiO{sub 2} nanocomposites revealed photoinduced charge separation at the CdSe-TiO{sub 2} interface of the composite. The photocurrent-voltage properties of CdSe-TiO{sub 2}-sensitized TiO{sub 2} particle films compared favorably with those of CdSe-sensitized TiO{sub 2} films. Evidence was also found indicating that the TiO{sub 2} component of the composite protects CdSe against degradation during film annealing.

Kim, J. Y.; Choi, S. B.; Noh, J. H.; HunYoon, S.; Lee, S.; Noh, T. H.; Frank, A. J.; Hong, K. S.

2009-01-01T23:59:59.000Z

112

Morphological and phase evolution of TiO{sub 2} nanocrystals prepared from peroxotitanate complex aqueous solution: Influence of acetic acid  

Science Conference Proceedings (OSTI)

Nanosized anatase and rutile TiO{sub 2} having different shape, phase and size have been prepared from aqueous solutions of peroxo titanium complex starting from titanium(IV) isopropoxide (TTIP), acetic acid and hydrogen peroxide (H{sub 2}O{sub 2}) in water/isopropanol media by a facile sol-gel process. The TiO{sub 2} nanocrystals are characterized by powder X-ray diffraction (XRD), Raman spectroscopy, FT-IR spectroscopy, TEM, high resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) techniques. The influence of pH and the sequence of addition of reaction contents on the phase and morphology of TiO{sub 2} are studied. The reasons for the observation of only anatase and/or mixture of anatase and rutile are given. - Graphical abstract: The morphology of TiO{sub 2} depends on the sequence of addition of AcOH and H{sub 2}O{sub 2} from the system of titanium isopropoxide and acetic acid (AcOH) in the presence of H{sub 2}O{sub 2}.

Chang, Jeong Ah; Vithal, Muga; Baek, In Chan [KRICT-EPFL Global Research Laboratory, Advanced Materials Division, Korea Research Institute of Chemical Technology, 19 Sinseongno, Yuseong, Daejeon 305-600 (Korea, Republic of); Seok, Sang Il, E-mail: seoksi@krict.re.k [KRICT-EPFL Global Research Laboratory, Advanced Materials Division, Korea Research Institute of Chemical Technology, 19 Sinseongno, Yuseong, Daejeon 305-600 (Korea, Republic of)

2009-04-15T23:59:59.000Z

113

ST/EL and ST/CV services for TI2 & TI8 LHC injection tunnels  

E-Print Network (OSTI)

This paper describes the ST/EL and ST/CV services for TI2 & TI8 LHC injection tunnels. The cooling and ventilation part describes the requirements for design and installation of more than 10 km of pipeline that is going to be laid down in the tunnels. Main operating parameters as well as manufacture procedures are explained. Preliminary work schedule with the cost estimate is also presented. Electrical power will be distributed from the LHC side and the SPS side for the machine and the general services. All power converters will be installed on surface buildings. The link between the main bend converters and the main bend magnets will be realised with water-cooled cables. Rest of the magnets will be cabled by using conventional copper and aluminium cables. Due to long lengths of the injection tunnels a dry 18kV transformer will be installed in TJ8 to serve the general services for TI8. The same will apply to TI2 by installing a transformer at the bottom of the PMI2 shaft.

Akhtar, S; CERN. Geneva. ST Division

2002-01-01T23:59:59.000Z

114

Contact Manufacturing Demonstration Facility Craig Blue, Ph.D.  

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

Manufacturing Demonstration Facility Craig Blue, Ph.D. Director, Manufacturing Demonstration Facility (865) 574-4351 blueca@ornl.gov INNOVATIONS IN MANUFACTURING www.ornl.gov/manufacturing Advanced Manufacturing Next-Generation Manufacturing As the nation's premier research laboratory, Oak Ridge National Laboratory is one of the world's most capable resources for transforming the next generation of scientific discovery into solutions for rebuilding and revitalizing America's manufacturing industries. These industries call upon ORNL's expertise in materials synthesis, characterization, and process technology to reduce risk and accelerate the development and deployment of innovative energy-efficient manufacturing processes and materials targeting products of the future.

115

The influence of FeTi and NiTi intermetallide additions on high-temperature oxidation of permalloy alloy  

Science Conference Proceedings (OSTI)

As a rule powder metallurgy Permalloy alloys are used in production of parts for electronic instruments. For the purpose of controlling the magnetic and electrical properties and also the wear (in the case of production of magnetic heads) and corrosion resistance appropriate additions of metals or such compounds as carbides and oxides are added to the alloy. In this work use of FeTi and NiTi intermetallides produced by reaction sintering of powders of pure metals in a protective atmosphere as alloying additions to Permalloy is recommended. The size of the original powders is less than 100 {mu}m. For reaction sintering at temperature 50{degrees}C above the eutectic temperature in the Ti-TiFe and TiNi-Ni systems was selected. The contents of titanium, iron, and oxygen in the FeTi alloy is 51.9, 45.7, and 2.4 wt.%, respectively, and of titanium, nickel, and oxygen in the NiTi alloy 59.6, 31.9, and 4.6 wt.%. High-temperature oxidation in air up to 1300{degrees}C with a rate of change in temperature of 15{degrees}C of type 78N Permalloy with additions of FeTi and NiTi alloys was investigated with use of methods of differential thermal and differential thermogravimetric analyses on an OD-103 derivatograph under nonisothermal conditions. The reaction products were studied by x-ray diffraction phase analysis on a DRON-3 instrument in CoK{sub {alpha}}-radiation. Pure 78N alloy powder with a composition of 78.1% Ni + 19.3% Fe (specimen 1) and also with additions of 1% FeTi (specimen 2) and 1% NiTi (specimen 3) were subjected to oxidation.

Klimenko, V.N.; Lavrenko, V.A.; Panasyuk, O.A.; Blasova, O.V.; Protsenko, T.G. [Inst. of Materials Science, Kiev (Ukraine)

1995-11-01T23:59:59.000Z

116

O Ti-tE LOVE  

Office of Legacy Management (LM)

' ItqQtJulRl' IICt' O Ti-tE LOVE ~t?Al. . . At2D Al.CLkTED IChTTEtt~ . ' . . . : . ' . i I . . . . .mr TttE HOt\' ORAULE~ STANLEY FItZl:; SFCAKER ' . : ,J WE\J i' ORti STATE ASSH' rtrLY l r . . isay 29,.1980 Consultant to the Kew York ' , .' .I, " ..' . ,"' ! -. . . : . . . I.. . . . . ~. ,:- 9.. :. .' , * Ill . ,.. , ,i / All . ' %: : . : . . -. ;:. * :... . _ -. .' . . . I . ' J n' f armed. ?%c firtdingo and backup documentatiin embodied in thi preliminafy report compel the Task Yorao to call trprm ym; thr: . . I SpcnXer, to cwthorim crnd ompowcr the Assemly Sta?ding,CozmiCte I ' . : ,. . ..: .I' .,' :. .~.. ,:. :,-"'. ; ..d ::. . . .~~ ' .,' .' . : ' , ' ..,, -. . -. . . : : ? :. . . . .; *. . 1 ,.' .i. . . : \. .- :. " ' . . . c. : . I ! .'

117

Acidic Extracellular pH Promotes Activation of Integrin [alpha]v[beta]3  

E-Print Network (OSTI)

Acidic extracellular pH is characteristic of the cell microenvironment in several important physiological and pathological contexts. Although it is well established that acidic extracellular pH can have profound effects ...

Paradise, Ranjani K.

118

Quantum Leaps in CO2 Detection Robert Byrne, Ph.D.  

E-Print Network (OSTI)

Quantum Leaps in CO2 Detection Robert Byrne, Ph.D. USF chemical oceanographers are making quantum. #12;Quantum Leaps in CO2 Detection Robert Byrne, Ph.D. When deployed on shipboard our shipboard

Meyers, Steven D.

119

AOA Chemistry Diagnostic: Fuel Deposit Source Term Reduction by Elevated pH  

Science Conference Proceedings (OSTI)

This Interim Report documents operating chemistry/radiochemistry data and in some cases shutdown data for selected PWR plants shifting pH control of primary water chemistry to elevated coordinated pH programs. Increasing pH (T) retards steam generator corrosion product release thereby reducing a source term available for deposition on fuel. A subsequent, final report will assess relevance of these on-going pH programs to source term control in axial offset anomaly (AOA) plants.

1999-12-09T23:59:59.000Z

120

Oral Histories: Physiologist Nello Pace, Ph.D.  

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

6 6 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Physiologist Nello Pace, Ph.D. Conducted August 16, 1994 United States Department of Energy Office of Human Radiation Experiments June 1995 CONTENTS Foreword Short Biography Education at UC Berkeley (1932–40) and Medical College of Virginia (1940–41); Service in Naval Reserves Tritium Injection Experiments in Animals and Humans During WW II Hospitality to Manhattan Project Researchers Staying in Washington Return to UC Berkeley to Research and Teach Development of Medical Physics Degree Programs at UC Berkeley Conducting the First Radiation Survey at Nagasaki After the Bomb Censured by the Military for Underclassifying His Nagasaki Report Reflections on Shields Warren The Public's Attitudes Toward Radiation, Then and Now

Note: This page contains sample records for the topic "ti ng ph" 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.


121

Oral Histories: Health Physicist William J. Bair, Ph.D.  

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

3 3 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Health Physicist William J. Bair, Ph.D. Conducted October 14, 1994 United States Department of Energy Office of Human Radiation Experiments June 1995 CONTENTS Foreword Short Biography Graduate Studies at University of Rochester AEC-Funded Research at University of Rochester Use of Human Subjects at University of Rochester AEC Direction of University of Rochester Research Contacts With Researchers Into Radiation Effects No Knowledge of Uranium Injections at Rochester Beginning a Career at Hanford Radionuclide Inhalation Studies at Hanford Use of Animals in Radiation Studies Identifying Health Effects of Inhaled Radionuclides Expanded Customer Base for Inhalation Studies Limited Involvement With Human Studies

122

Oral Histories: Radiobiologist Chet Richmond, Ph.D.  

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

7 7 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Radiobiologist Chet Richmond, Ph.D. Conducted January 24, 1995 United States Department of Energy Office of Human Radiation Experiments August 1995 CONTENTS Foreword Short Biography Graduate Studies at the University of New Mexico and Los Alamos Scientific Laboratory (1955–58) Research on Metabolic Kinetics of Radionuclides Accelerating the Turnover of Cesium With Prussian Blue (Circa 1960) Use of the Whole-Body Counter for Fallout Studies Physicians Customarily Attended During Intake of Radionuclides Follow-Up With GIs Exposed to Radiation in the Manhattan Project (Ongoing) Declassifying the Los Alamos Report on Plutonium Injections (1971) On Assignment to AEC Headquarters in Washington, D.C. (1969–71)

123

Oral Histories: Health Physicist Constantine J. Maletskos, Ph.D.  

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

3 3 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Health Physicist Constantine J. Maletskos, Ph.D. Conducted January 20, 1995 United States Department of Energy Office of Human Radiation Experiments September 1995 CONTENTS Foreword Short Biography Early Education and Career (1920 to Mid '50s) Early Dosimetry Research (1940s to 1960) Radium Dial Painter Research (Early '50s–60s) Fernald School Calcium Metabolism Studies (1948 to Early '50s) Iodine-131 Thyroid Research (Early '50s); Additional Calcium Metabolism Studies on Elderly Subjects (Early '50s) Iodine-131 Research and the Fernald School (Early to Mid '50s) Robley Evans's Role in Experiment Oversight and Funding Information Experiment Safety Protocols, Clarified (1950s) Radium and Thorium Ingestion by Human Subjects (Late '50s to Early '60s)

124

Oral Histories: Cell Biologist Don Francis Petersen, Ph.D.  

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

0 0 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Cell Biologist Don Francis Petersen, Ph.D. Conducted November 29, 1994 United States Department of Energy Office of Human Radiation Experiments August 1995 CONTENTS Foreword Short Biography From South Dakota to University of Chicago (1950) to Los Alamos (1956) Outlining the Agenda for Radiation Research (Early '50s) MET Lab Research in the Metabolism of Radionuclides Choosing a Career at Los Alamos (1956) Nuclear Weapons Fallout Studies (1946–54) The Radiobiology Group's Research Project Approval Process Mission of the Los Alamos Biomedical Group in the 1950s Participation as a Subject in Human Radiation Studies Measuring Iodine-131 Uptake in Children (Circa 1963) AEC Authorization of the Use of Human Subjects (1956)

125

Oral Histories: Biophysicist Cornelius A. Tobias, Ph.D.  

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

0 0 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Biophysicist Cornelius A. Tobias, Ph.D. Conducted January 16, 1995 United States Department of Energy Office of Human Radiation Experiments July 1995 CONTENTS Foreword Short Biography Forthcoming and Planned Publications Wartime Studies of Effects of High Altitude on Aviators Study of Carbon Monoxide With Radioactive Tracers Blood Studies With Radioactive Iron Human Use Committees Approval for Studies on Ionizing Cosmic Particles Heavy-Ion Research With the Bevatron Boron Isotope Research and Therapy Shared Knowledge and Coordination of AEC-Funded Research Classified Research Involving Human Subjects Classification of Fallout-Induced Radioactivity Detected in Animals Heavy-Particle Radiography Heavy-Particle Beams and Medical Research

126

Oral Histories: Dr. Patricia Wallace Durbin, Ph.D.  

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

8 8 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Dr. Patricia Wallace Durbin, Ph.D. Conducted November 11, 1994 United States Department of Energy Office of Human Radiation Experiments July 1995 CONTENTS Foreword Short Biography Support for Research Withdrawn by Department of Energy Dr. Durbin's Current Research Radiation Research With Monkeys, 1954-1981 Potential Influences of Monkey Studies on Strontium Metabolism in Humans Initiation of Animal Studies as Part of Project Sunshine Human Strontium Injection Studies Study of Calcium and Strontium Metabolism in Human Infants Direction for Future Department of Energy Research in Metabolism and Biology Why She Perceives That the Department of Energy Lacks Interest in Nuclide Studies Rationale for Studies of Human Metabolism of Radionuclides

127

Oral Histories: Radiation Biologist Marvin Goldman, Ph.D.  

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

8 8 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Radiation Biologist Marvin Goldman, Ph.D. Conducted December 22, 1994 United States Department of Energy Office of Human Radiation Experiments September 1995 CONTENTS Foreword Short Biography Educational Background and Early Involvement in Radiation Research Brookhaven Acquaintances and Early Hospital Research (Circa 1952) Vulnerable Populations and Acceptable Risks Research at the University of Rochester (1952-57) Relationship with Newell Stannard and Stafford Warren (1952-57) Participation in "Project Sunshine" and Move to the University of California, Davis (Mid '50s to '58) Participation in Beagle Studies at the University of California at Davis (1958 to '60s) Budget Concerns and Goldman's Other Radiation Research Projects (1965 to Late '60s)

128

W. Alexander Williams, Ph.D Designation and Certification Manager  

Office of Legacy Management (LM)

March 20, 1995 March 20, 1995 W. Alexander Williams, Ph.D Designation and Certification Manager EM-421 Quince Orchard U.S. Department of Energy Washington, DC 20585-0002 L -=kj SUBJECT: FINAL REPORT-RADIOLOGICAL SURVEY OF THE F AMERICAN MANUFACTURING COMPANY OF TEXA WORTH, TEXAS I ,d Sl I lRMER , FORT Dear Dr. Williams: The Environmental,Survey and Site Assessment Program (ESSAP) of the C for Science and Education (ORISE) conducted radiological survey activii American Manufacturing Company of Texas Site in Fort Worth, Texas October 3 through 5, 1994. The survey activities consisted of document revi surface activity measurements, smears for removable activity, exposure rate m soil and miscellaneous sampling. k Ridge Institute :s at the former wing the period

129

Instrument Schedule for ng7sans  

Science Conference Proceedings (OSTI)

... materials, A Norman (ExxonMobil) M Birnkrant, ExxonMobil, 10CB, Mildner ... phase behavior of polymer blends, A. Eberle (Exxon Mobil), Exxon Mobil, ...

130

Instrument Schedule for ng3sans  

Science Conference Proceedings (OSTI)

... 10CB, Akgun. Aug 26, 3, 18555, phase behavior of polymer blends, A. Eberle (Exxon Mobil), Exxon Mobil, 10CB, Liu. Aug 29, ...

131

Instrument Schedule for ng7sans  

Science Conference Proceedings (OSTI)

... 10CB, Butler. Sep 25, 2, 19006, phase behavior of polymer blends, A. Eberle (Exxon Mobil), Exxon Mobil, 7HB, Butler. Sep 27, ...

132

Instrument Schedule for ng3sans  

Science Conference Proceedings (OSTI)

... May 13, 2, 17988, Interplay of polymer interactions in peptide-polymer conjugate, T Xu JC Ang P Panganiban R Lund (UC-Berkeley), UC-Berkeley, ...

133

Instrument Schedule for ng3sans  

Science Conference Proceedings (OSTI)

... Nov 12, 1, 18812, Effects of tree throw on porosity evolution during shale, X Gu S Brantley (Penn State U), Pann State U, 10CB, Mildner. ...

134

Chemical and Processing Engineering PhD Scholarship The Chemical and Processing Engineering PhD Scholarship has been established to support  

E-Print Network (OSTI)

Chemical and Processing Engineering PhD Scholarship The Chemical and Processing Engineering Ph at the University of Canterbury within the Department of Chemical and Process Engineering. Conditions of Eligibility Administrator Department of Chemical and Process Engineering University of Canterbury Private Bag 4800

Hickman, Mark

135

Energy-Scale Dependence of the Lepton-Flavor-Mixing Matrix hep-ph/9904292  

E-Print Network (OSTI)

We study an energy-scale dependence of the lepton-flavor-mixing matrix in the minimal supersymmetric standard model with the effective dimension-five operators which give the masses of neutrinos. We analyze the renormalization group equations of ?ijs which are coefficients of these effective operators under the approximation to neglect the corrections of O(?2). As a consequence, we find that all phases in ? do not depend on the energy-scale, and that only ng ? 1 (ng: generation number) real independent parameters in the lepton-flavor-mixing matrix depend on the energyscale.

N. Haba; Y. Matsui; N. Okamura; M. Sugiura

1999-01-01T23:59:59.000Z

136

Comportamento eletroquímico do Ti Grau 2 e da liga Ti6A14V em tampões citrato e tampões MCLL Vaine contendo haletos.  

E-Print Network (OSTI)

??Estudou-se o comportamento eletroquímico do Ti grau 2 e da liga Ti6Al4V em tampões citrato e tampões Mcll Vaine, na presença de haletos, em uma… (more)

Anelise Marlene Schmidt

2003-01-01T23:59:59.000Z

137

Nature of Transactions (TI) Code | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Nature of Transactions (TI) Code | National Nuclear Security Administration Nature of Transactions (TI) Code | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Nature of Transactions (TI) Code Home > About Us > Our Programs > Nuclear Security > Nuclear Materials Management & Safeguards System > NMMSS Information, Reports & Forms > Code Tables > Nature of Transactions (TI) Code

138

Explosive joints in Nb--Ti/Cu composite superconductors  

SciTech Connect

Explosive welding techniques have been applied to the joining of a Nb-Ti/ Cu composite conductor. Details of the process are given together with mechanical and electrical evaluations of the resulting joints. (auth)

Cornish, D.N.; Zbasnik, J.P.; Pattee, H.E.

1975-11-01T23:59:59.000Z

139

J-26: Nanocomposite Photocatalysts Containing TiO2 for ...  

Science Conference Proceedings (OSTI)

... viruses, fungi and algae. The main drawbacks of the low quantum yields and the lack of visible-light utilization hinder the practical applications of TiO2. Hence  ...

140

TiO2: Fundamentals, Applications, and Perspectives  

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

TiO2: Fundamentals, Applications, and Perspectives Speaker(s): Werner Hofer Date: November 18, 2011 (All day) Location: 90-3122 Seminar HostPoint of Contact: Robert Kostecki I...

Note: This page contains sample records for the topic "ti ng ph" 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.


141

Composite Ti-6Al-4V + Hydroxyapatite Biomedical Implant Materials ...  

Science Conference Proceedings (OSTI)

Together the augmented diffusion mode and accelerated application of thermal energy allow co-sintering of Ti-6Al-4V + HA below 1000°C to be realized, thus ...

142

080- Carbon Modified (CM)-n-TiO  

Science Conference Proceedings (OSTI)

An undoped reference n-TiO2 sample was also synthesized in an electric oven for .... 131- Metastable ?-FeNi Particles for Self-Limited RF Heating.

143

Effects of Ti Content on Cavitation Resistance of Austenitic Stainless ...  

Science Conference Proceedings (OSTI)

D8: Study of Rack and Chord Assembly Formability for Jack-up Platforms ... Zone of Zr-Ti Microalloyed High-strength High-toughness Offshore Structural Steels.

144

Properties of dc magnetron reactively sputtered TiN  

Science Conference Proceedings (OSTI)

Titanium nitride is of interest for IC fabrication because of its excellent performance as a metallic diffusion barrier. TiN films have been deposited in a batch sputtering system equipped with dc magnetron cathodes

Jim Stimmell

1986-01-01T23:59:59.000Z

145

Synthesis of Nanostructured TiO2 /Carbon Nanotube Heterojunction ...  

Science Conference Proceedings (OSTI)

Microstructural Evolution of SnS Thin Films Grown by Electrodeposition · Morphology Engineering of 1D, 2D and 3D TiO2 Nanostructures and Their Application ...

146

3DXRD Characterization of GNDs and Deformation Twins in ?-Ti  

Science Conference Proceedings (OSTI)

... ?-Ti using the 3DXRD station 34-ID-E at the Advanced Photon Source, Argonne National Laboratory. ... Research at APS 34-ID-E, partly funded by BES/ DOE.

147

Superhydrophilic TiO2 surface without photocatalytic activation  

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

Superhydrophilic TiO2 surface without photocatalytic activation Superhydrophilic TiO2 surface without photocatalytic activation Title Superhydrophilic TiO2 surface without photocatalytic activation Publication Type Journal Article Year of Publication 2010 Authors Zormpa, Vasileia, Xiaobo Chen, and Samuel S. Mao Journal Applied Physics Letter Volume 96 Issue 9 Date Published 12/2009 Abstract Since the discovery of extreme surface wetting phenomenon induced by ultraviolet photocatalysis, TiO2 has become the material of choice for environmental friendly applications such as self-cleaning coatings. Nevertheless, it remains a significant challenge to realize surfaces exhibiting persistent superhydrophilicity but without the need of external stimuli. We report a bioinspired TiO2 nanostructure that shows extreme superhydrophilicity without the need of light activation, and with stability against successive wetting-dewetting cycles. This ultimate TiO2 wetting surface exhibits high transmittance from near ultraviolet to the infrared, thus enabling practical antifogging technologies where transparency is critical.

148

Native SrTiO3 (001) surface layer from resonant Ti L2,3 reflectance spectroscopy  

SciTech Connect

We quantitatively model resonant Ti L2,3 reflectivity Rs,p(q, hn) from several SrTiO3 (001) single crystals having different initial surface preparations and stored in ambient conditions before and between measurements. All samples exhibit unexpected 300 K Rs(hn) - Rp(hn) anisotropy corresponding to weak linear dichroism and tetragonal distortion of the TiO6 octahedra indicating a surface layer with properties different from cubic SrTiO3. Oscillations in Rs(q) confirm a ubiquitous surface layer 2-3 nm thick that evolves over a range of time scales. Resonant optical constant spectra derived from Rs,p(hn) assuming a uniform sample are refined using a single surface layer to fit measured Rs(q). Differences in surface layer and bulk optical properties indicate that the surface is significantly depleted in Sr and enriched in Ti and O. While consistent with the tendency of SrTiO3 surfaces toward non-stoichiometry, this layer does not conform simply to existing models for the near surface region and apparently forms via room temperature surface reactions with the ambient. This new quantitative spectral modeling approach is generally applicable and has potential to study near-surface properties of a variety of systems with unique chemical and electronic sensitivities.

Valvidares, Manuel; Huijben, Mark; Yu, Pu; Ramesh, Ramamoorthy; Kortright, Jeffrey

2010-11-03T23:59:59.000Z

149

D.M.A./Ph.D. Handbook/August 2011.2 Graduate Handbook  

E-Print Network (OSTI)

D.M.A./Ph.D. Handbook/August 2011.2 Graduate Handbook Doctor of Musical Arts Church music of Kansas #12;D.M.A./Ph.D. Handbook/August 2011.2ii TABLE OF CONTENTS PAGE HOW TO USE THIS HANDBOOK courses Course number required in applied music courses #12;D.M.A./Ph.D. Handbook/August 2011.2iii

Peterson, Blake R.

150

Evaluation of Constant Elevated pH Demonstration at Comanche Peak Steam Electric Station  

Science Conference Proceedings (OSTI)

Laboratory data and limited field experience suggest that constant elevated pH, when optimized, will reduce the release of corrosion products from ex-core pressurized water reactor (PWR) surfaces and therefore the amount transported and deposited on fuel assemblies. However, the impact of elevated pH and higher lithium concentrations required to achieve the desired pH must first be evaluated and then demonstrated prior to widespread industry application. This interim report summarizes the results of oper...

2005-03-23T23:59:59.000Z

151

Assessment of Comanche Peak, Ringhals, and Diablo Canyon Elevated pH Programs  

Science Conference Proceedings (OSTI)

The formation and transport of activated corrosion products within the primary reactor coolant system (RCS) can adversely affect fuel performance, plant operation, and out-of-core radiation fields. Controlling the high temperature pH (pHT) of the Pressurized Water Reactor (PWR) primary circuit can successfully mitigate this process. This report assesses the effects of implementing elevated pH programs to determine the impact of the pH program changes on various plant indicators relating ...

2012-12-20T23:59:59.000Z

152

Dr. Carlos Gonzalez's Bio Dr. Gonzalez received his Ph.D in ...  

Science Conference Proceedings (OSTI)

Page 1. Dr. Carlos Gonzalez's Bio Dr. Gonzalez received his Ph.D in Theoretical Chemistry at Wayne State University, in 1990. ...

2013-05-31T23:59:59.000Z

153

The Effect of pH on Nickel Alloy SCC and Corrosion Performance  

DOE Green Energy (OSTI)

Alloy X-750 condition HTH stress corrosion crack growth rate (SCCGR) tests have been conducted at 360 C (680 F) with 50 cc/kg hydrogen as a function of coolant pH. Results indicate no appreciable influence of pH on crack growth in the pH (at 360 C) range of {approx} 6.2 to 8.7, consistent with previous alloy 600 findings. These intermediate pH results suggest that pH is not a key variable which must be accounted for when modeling pressurized water reactor (PWR) primary water SCC. In this study, however, a nearly three fold reduction in X-750 crack growth rate was observed in reduced pH environments (pH 3.8 through HCl addition and pH 4-5.3 through H{sub 2}SO{sub 4} addition). Crack growth rates did not directly correlate with corrosion film thickness. In fact, 10x thicker corrosion films were observed in the reduced pH environments.

D.S. Morton; M. Hansen

2002-10-10T23:59:59.000Z

154

Improving compost process efficiency by controlling aeration, temperature and pH.  

E-Print Network (OSTI)

??Biowaste composting is rapidly increasing, and many composting plants in Scandinavia have had problems with low pH during the process. The aim of this thesis… (more)

Sundberg, Cecilia

2005-01-01T23:59:59.000Z

155

Self-Organized Amorphous TiO2 Nanotube Arrays on Porous Ti Foam for Rechargeable Lithium and Sodium Ion Batteries  

SciTech Connect

Self-organized amorphous TiO2 nanotube arrays (NTAs) were successfully fabricated on both Ti foil and porous Ti foam through electrochemical anodization techniques. The starting Ti foams were fabricated using ARCAM s Electron Beam Melting (EBM) technology. The TiO2 NTAs on Ti foam were used as anodes in lithium ion batteries; they exhibited high capacities of 103 Ahcm-2 at 10 Acm-2 and 83 Ahcm-2 at 500 Acm-2, which are two to three times higher than those achieved on the standard Ti foil, which is around 40 Ahcm-2 at 10 Acm-2 and 24 Ahcm-2 at 500 Acm-2, respectively. This improvement is mainly attributed to higher surface area of the Ti foam and higher porosity of the nanotube arrays layer grown on the Ti foam. In addition, a Na-ion half-cell composed of these NTAs anodes and Na metal showed a self-improving specific capacity upon cycling at 10 Acm-2. These results indicate that TiO2 NTAs grown on Ti porous foam are promising electrodes for Li-ion or Na-ion rechargeable batteries.

Bi, Zhonghe [ORNL; Paranthaman, Mariappan Parans [ORNL; Menchhofer, Paul A [ORNL; Dehoff, Ryan R [ORNL; Bridges, Craig A [ORNL; Chi, Miaofang [ORNL; Guo, Bingkun [ORNL; Sun, Xiao-Guang [ORNL; Dai, Sheng [ORNL

2013-01-01T23:59:59.000Z

156

XIN CAÙO LOÃI, ÑAÕ HEÁT CHOÃ ÑAÄU XE  

Science Conference Proceedings (OSTI)

... Ðãi ROBERT J. FLORES Ch? Th??ng Nghi?p LUCILLE KRING ... ngân kho?n ?ó trong tài nguyên c?a ti?u ... 66-Các Gi?i H?n V? Lu?t "Ba L?n Ph?m ...

2010-03-22T23:59:59.000Z

157

BaTiO? based materials for piezoelectric and electro-optic applications  

E-Print Network (OSTI)

Ferroelectric materials are key to many modem technologies, in particular piezoelectric actuators and electro-optic modulators. BaTiO? is one of the most extensively studied ferroelectric materials. The use of BaTiO? for ...

Avrahami, Ytshak, 1969-

2003-01-01T23:59:59.000Z

158

Ti3+ in the surface of titanium dioxide: generation, properties and photocatalytic application  

Science Conference Proceedings (OSTI)

Titanium dioxide (TiO2) is the most investigated crystalline oxide in the surface science of metal oxides. Its physical and chemical properties are dominantly determined by its surface condition. Ti3+ surface defect (TSD) is one ...

Liang-Bin Xiong; Jia-Lin Li; Bo Yang; Ying Yu

2012-01-01T23:59:59.000Z

159

Friction Stir Processing of Ti-6Al-4V for Grain Size Reduction in ...  

Science Conference Proceedings (OSTI)

In Ti alloys, such as Ti-6Al-4V, fusion welding results in coarse-grained microstructure ... Friction Stir Spot Welding of Magnesium to Aluminum Alloys with a Cold ...

160

Molecular beam epitaxy of SrTiO3 with a growth window  

E-Print Network (OSTI)

Estimated MBE growth window for SrTiO 3 in conventional MBEregion shows the growth window for stoichiometric films with4 (color online): Growth window for stoichiometric SrTiO 3

Stemmer, Susanne

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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

Engineered Heart Tissue Model of Diabetic Myocardium Hannah Song, Ph.D.,1  

E-Print Network (OSTI)

Engineered Heart Tissue Model of Diabetic Myocardium Hannah Song, Ph.D.,1 Peter W. Zandstra, Ph of cardiomyocytes (CMs) is a leading cause of heart failure. Previously, we reported an in vitro test-bed for screening cell integration between injected test cells and host CM using the engineered heart tissue

Zandstra, Peter W.

162

D.M.A./Ph.D. Handbook/August 2009 Graduate Handbook  

E-Print Network (OSTI)

D.M.A./Ph.D. Handbook/August 2009 Graduate Handbook Doctor of Musical Arts Church music of Kansas Revised 2009 #12;D.M.A./Ph.D. Handbook/August 2009 (updated 10/09)ii TABLE OF CONTENTS PAGE HOW TO USE THIS HANDBOOK .................................................................1 ADVISING

Peterson, Blake R.

163

PH2: an hadoop-based framework for mining structural properties from the PDB database  

Science Conference Proceedings (OSTI)

PH2 is an Hadoop and SQL-based tool for extracting information out of the Protein Database (PDB) quickly. The PDB database is stored as a set of Hadoop sequence files in a replicated way on the Hadoop Distributed File System. PH2 then allows a user to ... Keywords: PDB, hadoop, parallel computing, structural information

Scott Hazelhurst

2010-10-01T23:59:59.000Z

164

Effect of pH and temperature on condensation and dissolution  

Science Conference Proceedings (OSTI)

The Korean PWR plants replaced ammonia with ethanolamine as a secondary side pH control agent to minimize the sludge production in the moisture drain and heater drain systems and the sludge transport into steam generator. The increase of pH in the secondary ... Keywords: ammonia, chemical oxygen demand, combined process, ethanolamine, nitrogen, water treatment

In Hyoung Rhee; Hyun Kyoung Ahn; Hyun Jun Jung

2007-02-01T23:59:59.000Z

165

Laboratory of mechanics PhD Thesis in Non-linear Mechanics  

E-Print Network (OSTI)

Laboratory of mechanics PhD Thesis in Non-linear Mechanics 1 DYNAMICS AND ACTIVE CONTROL WITH DELAY OF THE DYNAMICS OF UNBOUNDED MONOSTABLE MECHANICAL STRUCTURES WITH 6 POTENTIAL NANA NBENDJO Blaise Roméo2005 #12;Laboratory of mechanics PhD Thesis in Non-linear Mechanics 2 TABLE OF CONTENTS tel-00009933

Paris-Sud XI, Université de

166

Method and apparatus for maintaining the pH in zinc-bromine battery systems  

DOE Patents (OSTI)

A method and apparatus for maintaining the pH level in a zinc-bromine battery features reacting decomposition hydrogen with bromine in the presence of a catalyst. The catalyst encourages the formation of hydrogen and bromine ions. The decomposition hydrogen is therefore consumed, alloying the pH of the system to remain substantially at a given value.

Grimes, Patrick G. (Westfield, NJ)

1985-09-10T23:59:59.000Z

167

Completed analysis of cellular networks with PH-renewal arrival call  

Science Conference Proceedings (OSTI)

In this paper, we apply the PH-renewal process to model new call and handoff processes, and apply the matrix-analytic approach to explore the performance measures of the drop and block probabilities. We examine the bursty nature of handoff call drops ... Keywords: Guard channel reservation handoff scheme, Handoff, Matrix-analytic approach, PH-renewal

Yung-Chung Wang; Chwan-Lu Tseng; Ren-Guey Chu; Shu-Ming Tseng

2009-04-01T23:59:59.000Z

168

Ris-PhD-27(EN) Wind Energy Applications of Synthetic  

E-Print Network (OSTI)

Risø-PhD-27(EN) Wind Energy Applications of Synthetic Aperture Radar Merete Bruun Christiansen Risø National Laboratory Roskilde Denmark November 2006 #12;Author: Merete Bruun Christiansen Title: Wind Energy Applications of Synthetic Aperture Radar Department: Wind Energy Department Risø-PhD-27(EN) November 2006

169

Compton Profile Study of Intermetallic Ti{sub 3}Al  

SciTech Connect

The Compton scattering measurement on intermetallic alloy Ti{sub 3}Al is reported in this work. The measurement is made using 59.54 keV gamma-rays from Am{sup 241} source. Theoretical calculation of Compton profile is also performed employing CRYSTAL code within the framework of density functional theory to compare with the measurement. The theoretical profile of the alloy is also synthesized following the superposition model taking the published Compton profiles of elemental solids from the APW method. The experimental study of charge transfer in the alloys has also been done by performing the experimental Compton profile measurements on Ti and Al following the superposition model and charge transfer from Al to Ti is clearly seen on the alloy formation.

Vyas, V.; Sharma, G. [Department of Physics, Banasthali University, Banasthali-304022 (India); Mishra, M. C.; Sharma, B. K. [Department of Physics, University of Rajasthan, Jaipur-302004 (India); Joshi, K. B. [Department of Physics, University College of Science, M.L.Sukhadia University, Udaipur-313 002 (India)

2011-10-20T23:59:59.000Z

170

Topology of charge density and elastic properties of Ti3SiC2 polymorphs  

E-Print Network (OSTI)

1. Structure models of Ti 3 SiC 2 . ? and ? refer to the twothe Brillouin zone of Ti 3 SiC 2 . c 400 MPa a 400 MPa c 400and elastic properties of Ti 3 SiC 2 polymorphs R. Yu, X. F.

Yu, Rong; Zhang, Xiao Feng; He, Lian Long; Ye, Heng Qiang

2004-01-01T23:59:59.000Z

171

High strength, light weight Ti-Y composites and method of making same  

DOE Patents (OSTI)

A high strength, light weight in-situ'' Ti-Y composite is produced by deformation processing a cast body having Ti and Y phase components distributed therein. The composite comprises elongated, ribbon-shaped Ti and Y phase components aligned along an axis of the deformed body.

Verhoeven, J.D.; Ellis, T.W.; Russell, A.M.; Jones, L.L.

1993-04-06T23:59:59.000Z

172

Fabrication and thermoelectric properties of fine-grained TiNiSn compounds  

Science Conference Proceedings (OSTI)

Nearly single-phased TiNiSn half-Heusler compound thermoelectric materials were synthesized by combining mechanical alloying (MA) and spark plasma sintering (SPS) in order to reduce its thermal conductivity by refining the grain sizes. Although TiNiSn compound powders were not synthesized directly via MA, dense bulk samples of TiNiSn compound were obtained by the subsequent SPS treatment. It was found that an excessive Ti addition relative to the TiNiSn stoichiometry is effective in increasing the phase purity of TiNiSn half-Heusler phase in the bulk samples, by compensating for the Ti loss caused by the oxidation of Ti powders and MA processing. The maximum power factor value obtained in the Ti-compensated sample is 1720 muW m{sup -1} K{sup -2} at 685 K. A relatively high ZT value of 0.32 is achieved at 785 K for the present undoped TiNiSn compound polycrystals. - Graphical abstract: Nearly single-phased TiNiSn-based half-Heusler compound polycrystalline materials with fine grains were fabricated by combining mechanical alloying (MA) and spark plasma sintering (SPS). A high ZT value for undoped TiNiSn was obtained because of the reduced thermal conductivity.

Zou Minmin [State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China); Li Jingfeng, E-mail: jingfeng@mail.tsinghua.edu.c [State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China); Du Bing; Liu Dawei [State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China); Kita, Takuji [Advanced Material Engineering Division, Vehicle Engineering Group, Higashifuji Technical Center, Toyota Motor Corporation, 1200, Mishuku, Susono, Shizuoka 410-1193 (Japan)

2009-11-15T23:59:59.000Z

173

Impact of TiN post-treatment on metal insulator metal capacitor performances  

Science Conference Proceedings (OSTI)

When deposited by chemical vapor deposition (CVD), TiN layers must be post-treated with N"2/H"2 plasma. Metal-insulator-metal (MIM) capacitors using CVD-TiN as electrodes and Al"2O"3 as insulator are studied from both electrical and physico-chemical ... Keywords: EELS analysis, Electrical characteristics, MIM capacitors, TiN post-treatment

A. Bajolet; J-P. Manceau; S. Bruyère; R. Clerc; M. Proust; N. Gaillard; J-C. Giraudin; P. Delpech; L. Montès; G. Ghibaudo

2006-11-01T23:59:59.000Z

174

High strength, light weight Ti-Y composites and method of making same  

DOE Patents (OSTI)

A high strength, light weight "in-situ" Ti-Y composite is produced by deformation processing a cast body having Ti and Y phase components distributed therein. The composite comprises elongated, ribbon-shaped Ti and Y phase components aligned along an axis of the deformed body.

Verhoeven, John D. (Ames, IA); Ellis, Timothy W. (Ames, IA); Russell, Alan M. (Ames, IA); Jones, Lawrence L. (Ames, IA)

1993-04-06T23:59:59.000Z

175

Op9ons for a polarizing device for NG7?SANS and NG6 ...  

Science Conference Proceedings (OSTI)

... controller 6,000 1 6,000 Laser and optics 100 W diode bar + laser driver + optics High pressure chiller 11,000 7,000 2 1 22,000 7,000 Laser misc. ...

2011-02-28T23:59:59.000Z

176

Laboratory Testing to Validate pH and Conductivity MULTEQ Calculations  

Science Conference Proceedings (OSTI)

The present strategy for mitigating intergranular attack/stress corrosion cracking (IGA/SCC) is based on the premise that crack initiation and propagation rates depend on pH and the electrochemical potential. Consequently, hydrazine is injected into the feedwater to maintain reducing potentials, amines are added to maintain the feedwater pH25C between 8.8 and 10, and sometimes the molar ratio of contaminants in the bulk water are controlled to minimize pH extremes in flow restricted regions. These measur...

2009-12-23T23:59:59.000Z

177

A theoretical investigation on photocatalytic oxidation on the TiO{sub 2} surface  

SciTech Connect

The TiO{sub 2} photocatalytic oxidation mechanism was theoretically investigated by using long-range corrected time-dependent density functional theory (LC-TDDFT) with a cluster model of the anatase TiO{sub 2}(001) surface. We found that LC-TDDFT with the cluster model quantitatively reproduces the photoexcitations of the TiO{sub 2} surface by calculating the electronic spectra of a clean TiO{sub 2} surface and one with oxygen defects. We calculated the electronic spectra of a molecularly adsorbed TiO{sub 2} surface for the adsorptions of phenol, methanol, and methane molecules as typical organic molecules. We obtained the surprising result that the main peak of the phenol-adsorbed TiO{sub 2} surface, which overlaps with the main peak of the clean TiO{sub 2} surface, corresponds to charge transfers from the phenol molecule to the TiO{sub 2} surface. This indicates that the TiO{sub 2} photocatalytic oxidation proceeds through direct charge transfer excitation from the substrate molecules to the TiO{sub 2} surface. In contrast, we found slight and no charge transfer for methanol and methane adsorption, respectively, in agreement with the experimental findings for their reactivities. In light of these results, we propose a new mechanism for heterogeneous TiO{sub 2} photocatalytic oxidations.

Suzuki, Satoshi [Department of Applied Chemistry, School of Engineering, University of Tokyo, Tokyo 113-8656 (Japan); Tsuneda, Takao; Hirao, Kimihiko [Advanced Science Institute, RIKEN, Wako, Saitama 351-0198 (Japan); CREST, Japan Science and Technology Agency (JST), Tokyo 113-8656 (Japan)

2012-01-14T23:59:59.000Z

178

Nowadays, a large spectrum of knowledge is required from PhD students working within the area of Energy Conversion Systems. Nevertheless, typical PhD  

E-Print Network (OSTI)

of Energy Conversion Systems. Nevertheless, typical PhD comptetences are often restricted to their fieldTech Summer School « Integrated Approach to Energy Systems » is to make up for those lacks, bring out the main challenges and provide methodological approaches to address multi-disciplinary energy-related challenges

179

Brine pH Modification Scale Control Technology. 2. A Review.pdf | Open  

Open Energy Info (EERE)

Brine pH Modification Scale Control Technology. 2. A Review.pdf Brine pH Modification Scale Control Technology. 2. A Review.pdf Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Brine pH Modification Scale Control Technology. 2. A Review.pdf Abstract A variety of processes has been deployed at geothermalfields to inhibit or control siliceous scale deposition. It has beenknown for decades that the kinetics of silicic acid polymerizationis retarded when the pH of an aqueous solution is decreased.Therefore, a potential method for controlling siliceous scalingfrom geothermal brine is treatment with acid. Early attempts tocontrol siliceous scaling in geothermal brine-handling equipmentby retarding polymerization led to the belief that the pHhad to be reduced to < 4. Acidifying brine was discourageddue to corrosion concerns.

180

Chemomechanical regulation of integrin activation and cellular processes in acidic extracellular pH  

E-Print Network (OSTI)

It is well established that extracellular pH (pHe) becomes acidic in several important physiological and pathological contexts, including the tumor and wound microenvironments. Although it is known that acidic pHe can have ...

Paradise, Ranjani Krishnan

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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

A Cytogenetic Footprint for Mammary Carcinomas Induced by PhIP in Rats  

SciTech Connect

PhIP (2-amino-1-methyl-6-phenylimidazo [4,5-b] pyridine), a mutagen/carcinogen belonging to the class of heterocyclic amines (HCAs) found in cooked meats, is a mammary gland carcinogen in rats and has been implicated in the etiology of certain human cancers including breast cancer. To gain insight into the genomic alterations associated with PhIP-induced mammary gland carcinogenesis, we used comparative genomic hybridization (CGH) to examine chromosomal abnormalities in rat mammary carcinomas induced by PhIP, and for comparison, by DMBA (7,12-dimethylbenz[a]anthracene), a potent experimental mammary carcinogen. There was a consistent and characteristic pattern of chromosome-region loss in PhIP-induced carcinomas that clearly distinguished them from carcinomas induced by DMBA.

Christian, A T

2001-04-01T23:59:59.000Z

182

ORISE report shows number of health physics Ph.D.s declined in...  

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

ORISE report shows number of health physics Ph.D.s declined in 2009 FOR IMMEDIATE RELEASE June 15, 2010 FY10-37 OAK RIDGE, Tenn.-Health physics undergraduate degrees increased...

183

Final Report: Support for Polytechnic PhD Student, September 24, 1996 - June 30, 1999  

SciTech Connect

Polytechnic University PhD student working on research projects in the area of fossil energy and renewable energy were supported in this program and did their research work at Brookhaven National Laboratory in the Department of Applied Sciences. One of these students had completed an MS degree in Chemical Engineering at Howard University while doing his research at Brookhaven. This student continued his studies by becoming a Polytechnic PhD student while doing his research work at Brookhaven.

Myerson, Allan S.

2000-01-19T23:59:59.000Z

184

Growth and Properties of (001)-oriented Pb(Zr?.??Ti?.??)O?/LaNiO? Films on Si(001) Substrates with TiN Buffer Layers  

E-Print Network (OSTI)

Pulsed laser deposition has been used to grow Pb(Zr?.??Ti?.??)O? (PZT)/LaNiO? (LNO) heterostructures with restricted crystallographic orientations on bare Si(001) and SiO?-coated Si(001) substrates, using TiN buffer layers. ...

Zhu, Tie-Jun

185

Current Status of Ti PM: Progress, Opportunities and Challenges  

SciTech Connect

Utilization of titanium components made by powder metallurgy methods has had limited acceptance largely due to the high cost of titanium (Ti) powder. There has been renewed interest in lower cost powder and several Ti reduction methods that produce a particulate product show promise. This talk summarizes work done at Oak Ridge National Laboratory to consolidate these lower cost powders into mill products. Press and sinter consolidation, hot isostatic pressing (HIP) and direct roll consolidation to make sheet have been explored. The characteristics of the consolidated products will be described as a function of the consolidation parameters. Research sponsored by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Industrial Technologies Program, under contract DE-AC05-00OR22725 with UT-Battelle, LLC.

Peter, William H [ORNL; Chen, Wei [ORNL; Yamamoto, Yukinori [ORNL; Dehoff, Ryan R [ORNL; Muth, Thomas R [ORNL; Nunn, Stephen D [ORNL; Kiggans, Jim [ORNL; Clark, Michael B [ORNL; Sabau, Adrian S [ORNL; Gorti, Sarma B [ORNL; Blue, Craig A [ORNL; Williams, James C [Ohio State University

2012-01-01T23:59:59.000Z

186

Determining the leaching characteristics of solidified/stabilized wastes using constant pH leaching tests  

E-Print Network (OSTI)

Solidification/Stabilization treatment using Portland cement is an established procedure in the management of hazardous wastes. The technology is relatively simple, cheap, and highly reliable in prohibiting the migration of hazardous contaminants into groundwater. The success of this technology is measured by the amount of contaminants retained in the solidified matrix system. The most widely-used procedure to determine the amount that can leach out of the solidified waste is the Toxicity Characteristics Leaching Procedure (TCLP), which was developed by the EPA. The TCLP, however, lacks control on the shape and dimensions of the samples, as well as the pH at which the test takes place. Thus, it does not provide a true leaching characteristic of the contaminants through the solidified matrix. By keeping the pH at a constant value and using samples with fixed dimensions, the TCLP can be vastly improved. These conditions allow most of the contaminants to leach out of the matrix at controlled conditions. Consequently, the characteristics of the leaching process can be measured more accurately. The procedure developed in this research, the Constant pH Leaching Test (CPLT), is a modification of the TCLP. It is designed to measure the leaching rates of a fixed-dimension sample at a constant pH. In addition to measuring the leaching rates, the research also investigated the effects of different water-to-cement ratios, pH of the acid baths, and concentrations of the acid baths.

Sofjan, Indratjahja

1995-01-01T23:59:59.000Z

187

Tribological behavior of NiTi alloy against 52100 steel and WC at elevated temperatures  

SciTech Connect

The dry tribological behavior of a Ti-50.3 at.% Ni alloy at temperatures of 25 deg. C, 50 deg. C and 200 deg. C was studied. The wear tests were performed on a high temperature pin-on-disk tribometer using 52100 steel and tungsten carbide pins. The worn surfaces of the NiTi alloy were examined by scanning electron microscope. The results showed that in the wear tests involving steel pins, the wear rate of the NiTi decreased as the wear testing temperature was increased. However, for the NiTi/WC contact, a reverse trend was observed. There was also a large decrease in the coefficient of friction for the NiTi/steel contact with increasing wear testing temperature. The formation of compact tribological layers could be the main reason for the reduction of the wear rate and coefficient of friction of the NiTi/steel contact at higher wear testing temperatures.

Abedini, M. [School of Metallurgy and Materials Engineering, University of Tehran, Tehran (Iran, Islamic Republic of); Ghasemi, H.M., E-mail: hghasemi@ut.ac.ir [School of Metallurgy and Materials Engineering, University of Tehran, Tehran (Iran, Islamic Republic of); Ahmadabadi, M. Nili [School of Metallurgy and Materials Engineering, University of Tehran, Tehran (Iran, Islamic Republic of)

2010-07-15T23:59:59.000Z

188

ORISE report shows number of health physics Ph.D.s declined in 2009  

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

ORISE report shows number of health physics Ph.D.s declined in 2009 ORISE report shows number of health physics Ph.D.s declined in 2009 FOR IMMEDIATE RELEASE June 15, 2010 FY10-37 OAK RIDGE, Tenn.-Health physics undergraduate degrees increased slightly in 2009 continuing a six-year trend, but doctorate degrees reported a 40-year low, says a report recently released by the Oak Ridge Institute for Science and Education. The report also showed the number of M.S. degrees was 21 percent less than in 2008. The ORISE report, Health Physics Enrollments and Degrees Survey, 2009 Data, surveyed 24 academic programs with enrollment and degree data and included students majoring in health physics or in an option program equivalent to a major. According to the survey, a total of 154 health physics B.S., M.S. and Ph.D degrees were earned in 2009.

189

Sandia National Laboratories environmental fluid dynamics code : pH effects user manual.  

Science Conference Proceedings (OSTI)

This document describes the implementation level changes in the source code and input files of Sandia National Laboratories Environmental Fluid Dynamics Code (SNL-EFDC) that are necessary for including pH effects into algae-growth dynamics. The document also gives a brief introduction to how pH effects are modeled into the algae-growth model. The document assumes that the reader is aware of the existing algae-growth model in SNL-EFDC. The existing model is described by James, Jarardhanam and more theoretical considerations behind modeling pH effects are presented therein. This document should be used in conjunction with the original EFDC manual and the original water-quality manual.

Janardhanam, Vijay (University of New Mexico, Albuquerque, NM); James, Scott Carlton

2012-02-01T23:59:59.000Z

190

Structural Bioinformatics-Based Prediction of Exceptional Selectivity of p38 MAP Kinase Inhibitor PH-797804  

DOE Green Energy (OSTI)

PH-797804 is a diarylpyridinone inhibitor of p38{alpha} mitogen-activated protein (MAP) kinase derived from a racemic mixture as the more potent atropisomer (aS), first proposed by molecular modeling and subsequently confirmed by experiments. On the basis of structural comparison with a different biaryl pyrazole template and supported by dozens of high-resolution crystal structures of p38{alpha} inhibitor complexes, PH-797804 is predicted to possess a high level of specificity across the broad human kinase genome. We used a structural bioinformatics approach to identify two selectivity elements encoded by the TXXXG sequence motif on the p38{alpha} kinase hinge: (i) Thr106 that serves as the gatekeeper to the buried hydrophobic pocket occupied by 2,4-difluorophenyl of PH-797804 and (ii) the bidentate hydrogen bonds formed by the pyridinone moiety with the kinase hinge requiring an induced 180{sup o} rotation of the Met109-Gly110 peptide bond. The peptide flip occurs in p38{alpha} kinase due to the critical glycine residue marked by its conformational flexibility. Kinome-wide sequence mining revealed rare presentation of the selectivity motif. Corroboratively, PH-797804 exhibited exceptionally high specificity against MAP kinases and the related kinases. No cross-reactivity was observed in large panels of kinase screens (selectivity ratio of >500-fold). In cellular assays, PH-797804 demonstrated superior potency and selectivity consistent with the biochemical measurements. PH-797804 has met safety criteria in human phase I studies and is under clinical development for several inflammatory conditions. Understanding the rationale for selectivity at the molecular level helps elucidate the biological function and design of specific p38{alpha} kinase inhibitors.

Xing, Li; Shieh, Huey S.; Selness, Shaun R.; Devraj, Rajesh V.; Walker, John K.; Devadas, Balekudru; Hope, Heidi R.; Compton, Robert P.; Schindler, John F.; Hirsch, Jeffrey L.; Benson, Alan G.; Kurumbail, Ravi G.; Stegeman, Roderick A.; Williams, Jennifer M.; Broadus, Richard M.; Walden, Zara; Monahan, Joseph B.; Pfizer

2009-07-24T23:59:59.000Z

191

Ultrafast X-ray and 2-dimensional UV Spectroscopy of TiO2 ...  

Science Conference Proceedings (OSTI)

Presentation Title, Ultrafast X-ray and 2-dimensional UV Spectroscopy of TiO2 Nanoparticles. Author(s), Majed Chergui. On-Site Speaker (Planned), Majed ...

192

Microscopic Study on the Interface Reaction between Ti and Al-Zn ...  

Science Conference Proceedings (OSTI)

Presentation Title, Microscopic Study on the Interface Reaction between Ti and Al -Zn Alloy during Ultra-Fast Heat Treatment. Author(s), Yue Zhao, David Nolan, ...

193

Shape Memory Response of NiTiHfPd High Strength and High ...  

Science Conference Proceedings (OSTI)

In this study, shape memory and superelastic properties of NiTiHfPd polycrystalline and single crystalline SMAs as functions of aging temperature and time were ...

194

Preparing SiC-TiB2 Composite via Liquid Phase Sintering  

Science Conference Proceedings (OSTI)

Some research works showed that the composites of SiC-TiB2 had better mechanical properties than monolithic ceramic. In this study, Silicon carbide – titanium ...

195

Nano-laminated Ti3Al Porous Structure Produced by Hot Forging ...  

Science Conference Proceedings (OSTI)

Extending Bulk CALPHAD Methods to Interfaces and Nanomaterials to Help ... Ti3Al Porous Structure Produced by Hot Forging and Selective Dissolution.

196

(Ti,Mg)N Thin Film Coatings Produced Via Physical Vapor Deposition  

Science Conference Proceedings (OSTI)

Magnesium (Mg) doped TiN was prepared via physical vapor deposition to ... Axial Compression of a Hollow Cylinder Filled with a Foam: A Porcupine Quill ...

197

Further Characterization of New NiTi Wire and Rotary Endodontic ...  

Science Conference Proceedings (OSTI)

Presentation Title, Further Characterization of New NiTi Wire and Rotary ... Higher-resolution transmission electron microscopy examination of M-Wire used to ...

198

Cyclability Study of Si/TiN/C Composite Anode with High Rate ...  

Science Conference Proceedings (OSTI)

Presentation Title, Cyclability Study of Si/TiN/C Composite Anode with High Rate Capability for Lithium-Ion Batteries. Author(s), Jiguo Tu, Shuqiang Jiao, ...

199

Wettability of Liquid Aluminum on Carbon/Graphite/TiB2 Composite ...  

Science Conference Proceedings (OSTI)

Presentation Title, Wettability of Liquid Aluminum on Carbon/Graphite/TiB2 ... The Applicability of Carbon Capture and Sequestration in Primary Aluminium ...

200

Aqueous Corrosion Study of Melt-Spun NdFeB Ribbons with TiC ...  

Science Conference Proceedings (OSTI)

Results showed that TiC additions improve corrosion resistance as indicated by lower corrosion rates (icorr) and more noble corrosion potentials. Results also ...

Note: This page contains sample records for the topic "ti ng ph" 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.


201

Effect of Aging on Mechanical Properties of Ti-Mo-Al Biomedical ...  

Science Conference Proceedings (OSTI)

For the case of Ti-Ni, cold work and aging at intermediate temperatures are utilized to improve shape memory effect through hardening. Therefore, in this work, ...

202

TiO2 Nanowire Solar Cells with Enhanced Energy Harvesting  

Science Conference Proceedings (OSTI)

Presentation Title, TiO2 Nanowire Solar Cells with Enhanced Energy Harvesting. Author(s), Anming Hu, John Wen, Y. Zhou. On-Site Speaker (Planned), Anming ...

203

Microwave-Assisted Synthesis of TiO2 Nanorod Films for Dye ...  

Science Conference Proceedings (OSTI)

Abstract Scope, One of limitations of conventional dye sensitized solar cells ( DSSC) is the use of TiO2 ... Radio Frequency Lamination for Photovoltaic Panels.

204

Evaluation of Long-term Corrosion Behavior of ?-type Ti Alloy in ...  

Science Conference Proceedings (OSTI)

The corrosion rate of Ti-Nb-Ta determined by EIS kept decreasing over a period .... to Enhance Thermal Energy Storage Capacity for Concentrated Solar Power ...

205

G2: Antibacterial Ceramic Fabricated by the Ti-bearing Blast ...  

Science Conference Proceedings (OSTI)

On-Site Speaker (Planned), Ang Tian. Abstract Scope, The comprehensive utilization of Ti-bearing blast furnace slag was a technological problem that was ...

206

Detonation Spraying of TiO2-Ag: Controlling the Phase Composition ...  

Science Conference Proceedings (OSTI)

Presentation Title, Detonation Spraying of TiO2-Ag: Controlling the Phase Composition and Microstructure ... Using Ice to Make Nature Inspired Hybrid Materials.

207

Mechanochemical Behavior of BaNd 2 Ti 4 O 12 Powder in Ball ...  

Science Conference Proceedings (OSTI)

When ball milling BaNd2Ti4O12, a high slurry viscosity reduces the capability of the grinding media to shear, and ...

208

Molecular beam epitaxy of SrTiO3 with a growth window  

E-Print Network (OSTI)

Materials Fundamentals of Molecular Beam Epitaxy (AcademicMolecular beam epitaxy of SrTiO 3 with a growth windowgrowth window in conventional molecular beam epitaxy (MBE)

Stemmer, Susanne

2009-01-01T23:59:59.000Z

209

Reduction of the Ni- and Ti-oxide mixtures by natural gas  

Science Conference Proceedings (OSTI)

In this work, the reduction of Ni- and Ti-oxides by natural gas has been studied. ... Reaction mechanism and reaction rate of Sn evaporation from liquid steel.

210

Effect of TiO2 on the Conduction Heat Transfer of Mold Flux  

Science Conference Proceedings (OSTI)

Symposium, 2nd International Symposium on High-Temperature Metallurgical Processing. Presentation Title, Effect of TiO2 on the Conduction Heat Transfer of

211

Titanium Beryllide (TiBe 12 ) for Fusion Reactors - Programmaster.org  

Science Conference Proceedings (OSTI)

Presentation Title, Titanium Beryllide (TiBe12) for Fusion Reactors. Author(s), Edgar E. Vidal, Christopher K. Dorn. On-Site Speaker (Planned), Edgar E. Vidal.

212

the effect of nb, ti, al on precipitation and strengthening behavior of ...  

Science Conference Proceedings (OSTI)

high temperature industries. However, the ceiling temperature for Alloy 718 is 650 because of. ? the instability of main strengthening phase ??-Ni3(Nb,Ti,Al).

213

Study on Heteropolyacids/Ti/Zr Mixed in the Inorganic Composites ...  

Science Conference Proceedings (OSTI)

Symposium, Energy Conversion/Fuel Cells. Presentation Title, Study on Heteropolyacids/Ti/Zr Mixed in the Inorganic Composites for Fuel Cell Electrolytes.

214

Aligned TiO2 Nanotubes as Long Durability Anodes for Lithium-Ion ...  

Science Conference Proceedings (OSTI)

Aligned TiO2 Nanotubes as Long Durability Anodes for Lithium-Ion Batteries · Aniline Coated Carbon Cryogel with Improved Cyclic Stability for Supercapacitor  ...

215

Fabrication of Engineered TiNi Matrix Composites with Near-Zero ...  

Science Conference Proceedings (OSTI)

Functional Composites: Fluorescent Carbon Nanotubes in Silica Aerogel ... Novel Metallo-Organic Derived Ti-Si-Cr-C-N Nanocomposite Coatings: Part II ...

216

Laser Deposited In Situ TiC Reinforced Nickel Matrix Composites  

Science Conference Proceedings (OSTI)

Abstract Scope, A new class of Ni-Ti-C based metal matrix composites has been ... of Metal Matrix Composites via Spark Plasma Sintering for Nuclear Energy ...

217

The Study of Transformations in Titanium and Ti Alloys by Electrical ...  

Science Conference Proceedings (OSTI)

Presentation Title, The Study of Transformations in Titanium and Ti Alloys by Electrical Resistivity Measurement. Author(s), Petr Harcuba, Michal Hájek, Jana ...

218

Effects of Nano-TiC p on the Microstructures and Tensile Properties ...  

Science Conference Proceedings (OSTI)

However, the investigations on the addition of the nano particulates into conventional metal materials are still rare, especially the nano-TiCp into ...

219

Effects of the Ti/Al atomic ratio on the properties of gradient (Ti,Al)N films synthesized by ion beam assisted deposition  

SciTech Connect

Gradient (Ti,Al)N films were prepared on high speed steel (HSS) and Si (111) wafers by using two Ar{sup +} beams to sputter a titanium target and an aluminum target separately, and a third N{sup +} beam to simultaneously bombard the growing film to assist deposition. The effects of the Ti/Al atomic ratio in the films on properties such as hardness, stress, and adhesion strength were investigated systematically. The results indicated that both the hardness and the adhesion of gradient (Ti,Al)N films to steel substrates exhibited {open_quotes}peak{close_quotes} type changes with an increase of the Ti/Al atomic ratio, and a maximum hardness of 3780thinspkgfthinspmm{sup {minus}2} was reached at a Ti/Al ratio of 5.35. The compressive stress of gradient (Ti,Al)N films increased with increasing Al content in the films. It was found that extreme hardness, high adhesion strength and low stress gradient (Ti,Al)N films can be synthesized on low temperature HSS steel by using the ion beam assisted deposition process.

He, X.; Shu, L.; Xie, Z.W. [Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

1999-03-01T23:59:59.000Z

220

Relative x-ray backlighter intensity comparison of ti and ti/sc combination foils driven in double-sided and single-sided laser configuration  

SciTech Connect

Use of multiple backlighter foils and/or double-sided laser interaction geometry with backlit imaging can result in improved backlighter efficiency. An experimental comparison of backlighter intensity for Ti foils and Ti/Sc combination foils in both the one-sided and double-sided laser-interaction configuration is presented. Spectrally-integrated framing camera images show intensity contributions of front and rear backlighter surfaces for both foil types. Analysis of time-resolved x-ray spectra collected from foil targets show the relative contribution of Ti and Sc 2-1 He-like resonance lines to the total backlighter intensity.

Bullock, A B; Landen, O L; Bradley, D K

2000-06-05T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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

Investigation of Ti-doped NaAlH4 by solid-state NMR  

DOE Green Energy (OSTI)

In recent years, the development of Ti-doped NaAlH{sub 4} as a hydrogen storage material has gained attention because of its large weight percentage of hydrogen ({approx}5%) compared to traditional interstitial hydrides. The addition of transition-metal dopants, in the form of Ti-halides, such as TiCl{sub 3}, dramatically improves the kinetics of the absorption and desorption of hydrogen from NaAlH{sub 4}. However, the role that Ti plays in enhancing the absorption and desorption of H{sub 2} is still unknown. In the present study, {sup 27}Al, {sup 23}Na, and {sup 1}H MAS (Magic Angle Spinning) NMR (Nuclear Magnetic Resonance) has been performed to understand the titanium speciation in Ti-doped NaAlH{sub 4}. All experiments were performed on a sample of crushed single crystals exposed to Ti during growth, a sample of solvent-mixed 4TiCl{sub 3} + 112NaAlH{sub 4}, a reacted sample of solvent-mixed TiCl{sub 3} + {sup 3}NaAlH{sub 4} with THF, and a reacted sample of ball-milled TiCl3 + 3NaAlH{sub 4}. The {sup 27}Al MAS NMR has shown differences in compound formation between solvent-mixed TiCl{sub 3} + 3NaAlH{sub 4} with THF and the mechanically ball-milled TiCl{sub 3} + 3NaAlH{sub 4}. {sup 27}Al MAS NMR of the mechanically ball-milled mixture of fully-reacted TiCl{sub 3} + 3NaAlH{sub 4} showed spectral signatures of TiAl{sub 3} while, the solvent-mixed 4TiCl{sub 3} + 112NaAlH{sub 4}, which is totally reacted, does not show the presences of TiAl{sub 3}, but shows the existence of Al{sub 2}O{sub 3}.

Maxwell, R; Majzoub, E; Herberg, J

2003-11-24T23:59:59.000Z

222

Acid buffering a high pH soil for zinc diffusion  

SciTech Connect

The effective use of an aqueous buffer solution of acetic acid and sodium acetate (1.0 M HOAc/1.4 M NaOAc, pH = 4.8) to lower the pH of a sand-attapulgite clay mixture from 9.4 to 4.8 is demonstrated. Soil buffering is necessary to prevent precipitation of Zn{sup 2+} as Zn(OH){sub 2(s)} during zinc diffusion tests. The choice of the acetic acid/sodium acetate buffer solution is based on results of batch-type tests and permeation tests performed to evaluate the soil-mixture pH lowering and buffering capacity of dilute solutions of HNO{sub 3} (a strong acid), 0.057 M HOAc (a weak acid), potassium hydrogen phthalate (a pH {approximately} 4 buffer), and the 1.0 M HOAc/1.4 MNaOAc buffer solution. Measured values of effective diffusion coefficients D* for zinc on unconfined, compacted test specimens of the buffered soil mixture ranged from 0.54 {times} 10{sup {minus}6} cm{sup 2}/s to 6.5 {times} 10{sup {minus}6} cm{sup 2}/s. This range of D*-values is within the range of D*-values reported for most reactive inorganic solutes in saturated clay soils and at the lower end of the range of D*-values for zinc in saturated clay soils.

Shackelford, C.D.; Cotten, T.E.; Rohal, K.M.; Strauss, S.H. [Colorado State Univ., Fort Collins, CO (United States)

1997-03-01T23:59:59.000Z

223

Can Wind Turbines be Bad for You? Alec N. Salt, Ph.D.  

E-Print Network (OSTI)

Can Wind Turbines be Bad for You? Alec N. Salt, Ph.D. Department of Otolaryngology always been Industrial Machines. Some are beautiful and remind us of days gone by. #12;Modern wind farmsModern wind farms are equally industrialare equally industrial but not so quaintbut not so quaint (unless

Salt, Alec N.

224

arXiv:astro-ph/0509571v119Sep2005 Gamma-Ray Burst Early Afterglows  

E-Print Network (OSTI)

arXiv:astro-ph/0509571v119Sep2005 Gamma-Ray Burst Early Afterglows Bing Zhang Department of Physics's Swift Gamma-Ray Burst Explorer open a new era for the multi-wavelength study of the very early afterglow phase of gamma-ray bursts (GRBs). GRB early afterglow information is essential to explore the unknown

Zhang, Bing

225

Division of Medical Sciences Ph.D. Programs at Harvard Medical School  

E-Print Network (OSTI)

Division of Medical Sciences Ph.D. Programs at Harvard Medical School Quarter Courses Spring Visualization with Maya Catalog Number: 61072 Enrollment: Limited to 18. Gael McGill (Medical School) and David Lopes Cardozo (Medical School) *BCMP 307qc. Approaches to Drug Action, Discovery, and Design Catalog

Mekalanos, John

226

College Station, Texas 77840-7896 Ph: (979) 458-6000  

E-Print Network (OSTI)

301 Tarrow College Station, Texas 77840-7896 Ph: (979) 458-6000 Joint Committee on Higher Education, The Texas A&M University System Chairs Zaffirini and Branch, and members of the Committee, thank you for the invitation to join you today. Texas Model: Given the need for higher education institutions to become

Boas, Harold P.

227

arXiv:astro-ph/0611774v210Jan2007 Gamma-Ray Burst Afterglows  

E-Print Network (OSTI)

arXiv:astro-ph/0611774v210Jan2007 Gamma-Ray Burst Afterglows Bing Zhang Department of Physics in multi-wavelength are observed following Gamma-ray bursts (GRBs). Recent broad- band observational with the ambient medium. Key words: Gamma-Ray Bursts, Swift Observatory, X-rays, optical, radio 1. Introduction

Zhang, Bing

228

Ilchmann, Achim; Pahl, M. : Adaptive Multivariable pH Regulation of a Biogas Tower Reactor  

E-Print Network (OSTI)

Ilchmann, Achim; Pahl, M. : Adaptive Multivariable pH Regulation of a Biogas Tower Reactor Zuerst. The adaptive controller was successlullytesteclover il pcriod of tu'o nonths at a biogas tower reuetoriu pilot are not applicable to the biogas tower reüctor.since a dontinatingf-eatureof the new reactol' prir-rciplc-is its

Knobloch,Jürgen

229

John T. Mihalczo PhD. in Nuclear Engineering : University of Tennessee, 1970  

E-Print Network (OSTI)

security by affecting safer assembly and handling of nuclear weapons components materials. The technologiesJohn T. Mihalczo PhD. in Nuclear Engineering : University of Tennessee, 1970 Masters in Physics in Nuclear Engineering at the University of Tennessee, Knoxville in 1970. · 40 years experience

230

Daniel E. Archer Ph.D., Experimental Nuclear Structure Physics, Florida State University, 1996  

E-Print Network (OSTI)

in radiation detectors for Homeland Security, the NMIS ­ Nuclear materials Identification System, and CMTB Highway Patrol in an effort to secure California borders against the nuclear threat; and acting as LeadDaniel E. Archer Ph.D., Experimental Nuclear Structure Physics, Florida State University, 1996 M

231

Transportation Center Seminar Series presents..... Eric J. Miller, Ph.D.  

E-Print Network (OSTI)

Transportation Center Seminar Series presents..... Eric J. Miller, Ph.D. Director, Cities Centre Transportation - Land Use Policy Analysis ABSTRACT The ILUTE (Integrated Land Use, Transportation, Environment from a known base case to a predicted future year end state in one-year time steps. ILUTE has reached

Bustamante, Fabián E.

232

Ris-PhD-21(EN) Hydrogen Storage Materials with Focus  

E-Print Network (OSTI)

, are explored in relation to hydrogen storage. After briefly reviewing the major energy related problemsRisø-PhD-21(EN) Hydrogen Storage Materials with Focus on Main Group I-II Elements Anders Andreasen Risø National Laboratory Roskilde Denmark October 2005 #12;Hydrogen storage materials with focus

233

arXiv:astro-ph/0703364v227Aug2007 Electromagnetic dark energy  

E-Print Network (OSTI)

arXiv:astro-ph/0703364v227Aug2007 Electromagnetic dark energy Christian Beck School of MathematicalGill University, Montreal, Quebec, Canada (Dated: August 28, 2007) We introduce a new model for dark energy equations, or more generally with the existence of dark energy. The dark energy density consistent

Low, Robert

234

Soham Al Snih Al Snih, MD., PhD. Curriculum Vitae CURRICULUM VITAE  

E-Print Network (OSTI)

Soham Al Snih Al Snih, MD., PhD. Curriculum Vitae 1 CURRICULUM VITAE NAME: Soham Al Snih Al Snih, M at the Sealy Center on Aging, University of Texas Medical Branch, Galveston, TX. #12;Soham Al Snih Al Snih, MD arthritis. B. Grant Support Current Grant Support: 1R03 AG029959-01A2 (Al Snih ­PI) Period: 06

Wood, James B.

235

Aqueous biphasic extraction process with pH and particle control  

DOE Patents (OSTI)

A process for aqueous biphasic extraction of metallic oxides and the like from substances containing silica. Control of media pH enables efficient and effective partition of mixture components. The inventive method may be employed to remove excess silica from kaolin clay.

Chaiko, David J. (Woodridge, IL); Mensah-Biney, R. (Downers Grove, IL)

1995-01-01T23:59:59.000Z

236

Fuel Cell and Battery Electric Vehicles Compared By C. E. (Sandy) Thomas, Ph.D., President  

E-Print Network (OSTI)

reduction goals1 . As shown in Figure 1, hybrid electric vehicles (HEV's) and plugin hybrid electric electric vehicle; H2 ICE HEV = hydrogen internal combustion engine hybrid electric vehicle) C.E. Thomas Fuel Cell and Battery Electric Vehicles Compared By C. E. (Sandy) Thomas, Ph.D., President H2Gen

237

PhD Project Proposal PV-Aware Design for Reliable 3-D Integration  

E-Print Network (OSTI)

PhD Project Proposal PV-Aware Design for Reliable 3-D Integration The trend of moving from planar dimension, and of the constraints on the positions of the through-silicon-vias and their timing models - Development of (stress-aware) mobility variation timing models for 3-D interconnect integration to augment

Langendoen, Koen

238

Path Forward in PV Research: News from Robert J. Davis, Ph.D.  

E-Print Network (OSTI)

, business, tax issues, nor reliability If PV will hit $1/Wp as it appears it will, how long will thosePath Forward in PV Research: News from BAPVC Robert J. Davis, Ph.D. Co-Director, Wright Center Trends in PV What is affordable solar durability? Right: Picosun SunALE R-150 atomic layer deposition

Rollins, Andrew M.

239

PhD Project: NMR Advanced Methodologies to investigate water diffusion in colloids and  

E-Print Network (OSTI)

PhD Project: NMR Advanced Methodologies to investigate water diffusion in colloids and biological lengthscales. Nuclear Magnetic Resonance (NMR) is capable of investigating the diffusion of molecules in fluids and the information obtainable with the conventional DTI. Another NMR branch where diffusion issues can be improved

Roma "La Sapienza", Università di

240

ESTABLISHMENT OF A BIOLOGICAL STATION ON THE GULF OF MEXICO. By W. EDGAR TAYLOR, PH. D.,  

E-Print Network (OSTI)

ESTABLISHMENT OF A BIOLOGICAL STATION ON THE GULF OF MEXICO. By W. EDGAR TAYLOR, PH. D., Professor the establishment of a biologic station on the Gnlf of Mexico is not simply of interest to the Gulf section oj"Biology, Louisiana Industrial institute. The Gulf region has a coast line much longer than any

Note: This page contains sample records for the topic "ti ng ph" 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

TiO2 Nanotubes Filled with NiFe2O4 Quantum Dots and Ni-Fe ...  

Science Conference Proceedings (OSTI)

The obtained TiO2NTs were filled with ... in the temperature range 25-850 °C. The modified TiO2NTs were also tested for ...

242

Exploration of artificial neural network to predict morphology of TiO2 nanotube  

Science Conference Proceedings (OSTI)

Artificial neural network (ANN) was developed to predict the morphology of TiO"2 nanotube prepared by anodization. The collected experimental data was simplified in an innovative approach and used as training and validation data, and the morphology of ... Keywords: Anodization, Artificial neural network, Morphology, Prediction, TiO2 nanotube

Hongyi Zhang; Jianling Zhao; Yuying Jia; Xuewen Xu; Cencun Tang; Yangxian Li

2012-03-01T23:59:59.000Z

243

Highly ordered TiO2 macropore arrays as transparent photocatalysts  

Science Conference Proceedings (OSTI)

Highly ordered transparent TiO2 macropore arrays were synthesized via a simple glass-clamping method at room temperature. The as-synthesized TiO2 macropore arrays show high transmittance in the visible light region and can be used ...

Yuan Dong; Junfeng Chao; Zhong Xie; Xin Xu; Zhuoran Wang; Di Chen

2012-01-01T23:59:59.000Z

244

Fatigue Crack Growth Characteristics of Thin Sheet Titanium Alloy Ti 6-2-2-2-2  

Science Conference Proceedings (OSTI)

Fatigue crack growth rates of Ti 6-2-2-2-2 as a function of stress ratio, temperature (24 or 177 degrees C), tensile orientation and environment (laboratory air or ultrahigh vacuum) are presented. Fatigue crack growth rates of Ti 6-2-2-2-2 are also compared ...

Smith Stephen W.; Piascik Robert S.

2001-03-01T23:59:59.000Z

245

Li-doped (Ba,Sr)TiO3 thick film interdigital capacitors for microwave applications  

Science Conference Proceedings (OSTI)

Microwave properties of Li-doped (Ba,Sr)TiO"3 thick film interdigital capacitors have been investigated. According to the reported papers, BaSrTiO"3 materials, paraelectric state at the room temperature, have high dielectric permittivity (>500 @ 1MHz) ... Keywords: BST, Microwave properties, Screen printing, Thick film, Tunability

Se-Ho Kim; Jung-Hyuk Koh

2009-01-01T23:59:59.000Z

246

Enhanced photocatalytic activity of Ag microgrid connected Ti O 2 nanocrystalline films  

Science Conference Proceedings (OSTI)

One reason for the high degree of photogenerated carrier recombination was found to be the charge accumulation caused by the uneven reaction area on the photocatalyst surface. The authors connected Ti O 2 nanoparticles with conducting Ag microgrid. Obvious photocatalytic activity improvement (81%) over the pure Ti O 2 was observed

Feng Pan; Junying Zhang; Weiwei Zhang; Tianmin Wang; Chao Cai

2007-01-01T23:59:59.000Z

247

Grain Refinement in TiC-Ni3Al Composites  

DOE Green Energy (OSTI)

The Cooperative Research and Development Agreement (CRADA) was to develop composites of TiC-Ni{sub 3}Al with refined grain microstructures for application in diesel engine fuel injection devices. Grain refinement is important for improved wear resistance and high strength for the applications of interest. Attrition milling effectively reduces the initial particle size and leads to a reduction of the final grain size. However, an increase in the oxygen content occurs concomitantly with the grinding operation and decreased densification of the compacts occurs during sintering.

Tiegs, T.N.

2001-01-30T23:59:59.000Z

248

Role of Ti phases in the modulation of border traps at the TiO{sub 2}/n-Si interfaces  

Science Conference Proceedings (OSTI)

Charge accumulation at interfaces is a key issue for the use of high dielectric constant materials in nanoelectronics. In this work, we report the charge accumulation behavior at the TiO{sub 2}/n-Si interfaces formed at various growth temperatures. Growth of TiO{sub 2} in an oxygen deficient environment led to the formation of rutile phase in the as-grown films. The anatase phase was recovered by annealing in air and the ratio of anatase to rutile phase in the TiO{sub 2} films improved considerably. The amount of charge accumulation and the direction of charge injection were studied by obtaining C-V hysteresis curves in the as-grown and the annealed TiO{sub 2} films. It was observed that the amount of accumulated charges decreased as the density of interface border traps dropped considerably due to annealing. X-ray photo-electron spectroscopy revealed the presence of two major phases corresponding to TiO{sub 2} and Ti{sub 2}O{sub 3}, due to the existence of oxygen deficiencies. The annealing in air resulted in appreciable increase in the weight percentage of TiO{sub 2} phase in samples grown at high temperatures. The healing of oxygen vacancies improved with the increase in the weight percentage of TiO{sub 2}. Thus, it was concluded that the accumulated charges were mainly due to oxygen deficiencies and the healing of oxygen defects led to a drop in the interface charges, thus, bringing the interface close to ideal.

Nasim, F.; Ali, A.; Bhatti, A. S. [Centre for Micro and Nano Devices, Department of Physics, Park Road, COMSATS Institute of Information Technology, Islamabad 44000 (Pakistan); Hafizuddin, Mohammad [Department of Physics, University of Kebangsaan, Bangi (Malaysia)

2012-08-15T23:59:59.000Z

249

On the remarkable optical and structural transformations in Mg-Ti-H thin  

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

On the remarkable optical and structural transformations in Mg-Ti-H thin On the remarkable optical and structural transformations in Mg-Ti-H thin films Speaker(s): Dana Borsa Date: October 16, 2006 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Venkat Srinivasan In searching for battery electrode materials, Mg-Ti-H thin films triggered much interest with its hydrogen storage capacity of approx. 4 times larger than that of conventional NiMH batteries [1]. Besides this, the same system has also absolutely remarkable optical properties [2]. Highly reflective in the metallic state, the films become highly absorbing upon hydrogen absorption. Mg0.80Ti0.20Hx thin films combine a high absorption (87% of the solar spectrum) with a low thermal emissivity (only 10%), while after removal of hydrogen Mg0.80Ti0.20 absorbs no more than 1/3 of the solar

250

Evidence of Photocatalytic Dissociation of Water on TiO2 with Atomic Resolution  

E-Print Network (OSTI)

Photocatalytic water splitting reaction on TiO2 surface is one of the fundamental issues that bears significant implication in hydrogen energy technology and has been extensively studied. However, the existence of the very first reaction step, the direct photo-dissociation of water, has been disregarded. Here, we provide unambiguously experimental evidence to demonstrate that adsorbed water molecules on reduced rutile TiO2(110)-1\\times1 surface can be dissociated under UV irradiation using low temperature scanning tunneling microscopy. It is identified that a water molecule at fivefold coordinated Ti (Ti5c) site can be photocatalytically dissociated, resulting in a hydroxyl at Ti5c and another hydroxyl at bridge oxygen row. Our findings reveal a missing link in the photocatalytic water splitting reaction chain, which greatly contribute to the detailed understanding of underlying mechanism.

Tan, Shijing; Wang, Yang; Zhao, Jin; Zhao, Aidi; Wang, Bing; Luo, Yi; Yang, Jinlong; Hou, J G

2011-01-01T23:59:59.000Z

251

27Al and 1H Solid State NMR Studies Show Evidence of TiAl3 and TiH2 in Ti-doped NaAlH4  

DOE Green Energy (OSTI)

Previous X-ray Diffraction (XRD) and Nuclear Magnetic Resonance (NMR) studies on Ti-doped NaAlH{sub 4} revealed the reaction products of two heavily doped (33.3 at.%) samples that were solvent-mixed and mechanically-milled. This investigation revealed that nano-crystalline or amorphous Al{sub 2}O{sub 3} forms from the possible coordination of aluminum with oxygen atom of the furan ring system from added tetrahydrofuran (THF) in the solvent-mixed sample, and that TiAl{sub 3} forms in mechanically-milled samples. The present paper provides a more sophisticated NMR investigation of the these materials. On heavily doped (33.3 at.%) solvent-mixed samples, {sup 27}Al Magic Angle Spinning (MAS) NMR {sup 27}Al multiple quantum MAS (MQMAS) indicates the presence of an oxide layer of Al{sub 2}O{sub 3} on the surfaces of potentially bulk nanocrystalline Ti, nanocrystalline TiAl{sub 3}, and/or metallic aluminum. The {sup 1}H MAS NMR data also indicate the possible coordination of aluminum with the oxygen atom in the THF. On heavily doped samples that were mechanically milled, {sup 27}Al MAS NMR and static NMR confirms the presence of TiAl{sub 3}. In addition, the {sup 1}H MAS NMR and {sup 1}H spin-lattice relaxation (T{sub 1}) measurements are consistent with the presence of TiH{sub 2}. These results are in agreement with recent XAFS measurements indicating both Al and H within the first few coordination shells of Ti in the doped alanate.

Herberg, J; Maxwell, R; Majzoub, E

2005-05-26T23:59:59.000Z

252

18 ASHRAEJournal ashrae.org S e p t e m b e r 2 0 1 0 By Brian A. Fricke, Ph.D., Member ASHRAE; and Bryan R. Becker, Ph.D., P.E., Fellow ASHRAE  

E-Print Network (OSTI)

18 ASHRAEJournal ashrae.org S e p t e m b e r 2 0 1 0 By Brian A. Fricke, Ph.D., Member ASHRAE; and Bryan R. Becker, Ph.D., P.E., Fellow ASHRAE T he continual operation of supermarket refrigeration in the 2011 ASHRAE Transactions. This article was published in ASHRAE Journal, September 2010. Copyright 2010

Oak Ridge National Laboratory

253

Wei Liu, Student Member ASHRAE, is graduate research assistant. Zhengwei Long, PhD, is lecturer. Qingyan Chen, PhD, Fellow ASHRAE, is Changjiang Chair Professor and Vicent P. Reilly  

E-Print Network (OSTI)

Wei Liu, Student Member ASHRAE, is graduate research assistant. Zhengwei Long, PhD, is lecturer. Qingyan Chen, PhD, Fellow ASHRAE, is Changjiang Chair Professor and Vicent P. Reilly Professor loss coefficients used in their calculations (Shao et al. 1995). ASHRAE Standard 120 provides

Chen, Qingyan "Yan"

254

R ES0 L U TI(it; 1  

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

ES0 L U TI(it; 1\ (;. ______ ES0 L U TI(it; 1\ (;. ______ lH T the i\£ '-'yor of tl,e Ctty of AmarHlo i.lli hE'rretr\ IHlthortzeti ~.nd directed to execute on oot~lf of the City ci:~ n,l!lnllo a contract between the Vnited :3rates o.f j\ ITJerica, reoresented by the l:"nited. Statf'8 p, tomie Ener~y CommiluJion. Amari.no .f~rea (,(fice, and dest!5nsted as Contract '1 (2~)-2) 224.9 ar"d the Citj Dr /\r:rarillo. Te:k.1ll8. authorilol.n'l the use of certain oroperty located a.t the .Amarino ,,\ir J'o:rc. Base by the Atorr,ic J~n~r~.v Co.n.lmiesion of the United Staws.. .). .. ~ 1/ . * 13.' .. ·If? . Contract AT(29-2)2249 CONTRACT This CONTRACT, entered into effective as hereinafter provided, by and between THE UNITED STATES OF AMERICA (hereinafter called the "Government

255

Texture and pyramidal slip in Ti, Zr and their alloys  

Science Conference Proceedings (OSTI)

Zirconium, titanium and their alloys have a high anisotropic plastic behavior. One way to show this behavior is to analyze the evolution of the Lankford coefficient (R ([alpha]), values of which are obtained from tensile tests along different directions in the sheet plane). The variation of R([alpha]) can be explained from the crystallographic texture and the active deformation mechanisms. Microstructural observations show that prismatic slip is the most active deformation mode in these materials, but no dimensional change in the [lt][bar c][gt] direction of grains is possible by the activation of the (10[bar 1]0) [lt] 1[bar 2]10[gt] slip alone; so deformation along [0001] has to be accommodated either by (10[bar 1]o) [lt]1[bar 2]13[gt] (or [lt][bar c] + [bar a][gt]) pyramidal slip or by twinning. Many transmission electron microscopy (TEM) studies have shown evidence for [lt][bar c] + [bar a][gt] slip activity, and some authors have reported slip on (1[bar 1]01) planes in Ti alloys. The purpose of this paper is to contribute with another analysis of pyramidal slip activity in hcp textured materials, such as Ti and Zr alloys, and of the hardening mechanisms for this deformation mode. This analysis is performed both in a direct way, by means of TEM observations of deformed samples, and in an indirect way, by different mechanical tests.

Pochettino, A.A.; Gannio, N. (Dept. Ciencias de Materiales, Gcia. Desarroilo, CNEA, Avda. Libertador 8250, 1429 Buenos Aires (Argentina)); Edwards, C.V. (Esc Ing. Mecanica, Pont. Univ. Catolica, Av. Vicuna Mackenna, Santiago de Chile (Chile)); Penelle, R. (Lab. de Metallurgie Structurale, URA CNRS 1107, Bat 413, Univ. Paris XI, 91 405 Orsay (France))

1992-12-15T23:59:59.000Z

256

Hydrogen Permeability of Mulitphase V-Ti-Ni Metallic Membranes  

DOE Green Energy (OSTI)

Development of advanced hydrogen separation membranes in support of hydrogen production processes such as coal gasification and as front end gas purifiers for fuel cell based system is paramount to the successful implementation of a national hydrogen economy. Current generation metallic hydrogen separation membranes are based on Pd-alloys. Although the technology has proven successful, at issue is the high cost of palladium. Evaluation of non-noble metal based dense metallic separation membranes is currently receiving national and international attention. The focal point of the reported work was to evaluate a Group 5A-Ta, Nb, V-based alloy with respect to microstructural features and hydrogen permeability. Electrochemical hydrogen permeation testing of the V-Ti-Ni alloy is reported herein and compared to pure Pd measurements recorded as part of this same study. The V-Ti-Ni was demonstrated to have a steady state hydrogen permeation rate an order of magnitude higher than the pure Pd material in testing conducted at 22 C.

Adams, T. M.; Mickalonis, J.

2005-10-18T23:59:59.000Z

257

Walter L. Warnick, Ph.D., Director | OSTI, US Dept of Energy, Office of  

Office of Scientific and Technical Information (OSTI)

Walter L. Warnick, Ph.D., Director Walter L. Warnick, Ph.D., Director WorldWideScience Alliance Signing Ceremony, June 12, 2008 [Photograph by: Korean Institute of Science and Technology Information] The WorldWideScience Alliance was formalized on June 12, 2008, in Seoul, Korea, by officials from 11 organizations representing 38 countries. WorldWideScience.org is the online gateway to science information issued from nations around the world. The signing ceremony was the culminating event at the ICSTI 2008 General Assembly, hosted by the Korea Institute of Science and Technology Information. Dr. Walter Warnick, Director of OSTI, which is Operating Agent for WorldWideScience.org, is pictured fourth from left. The Department of Energy was represented by Dr. Jeffrey Salmon, Associate Under Secretary for Science (seventh from left).

258

Microsoft Word - CX-DworshakPH-Dworshak1spacers_WEB.doc  

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

5, 2010 5, 2010 REPLY TO ATTN OF: KEP-4 SUBJECT: Environmental Clearance Memorandum Corinn Castro Project Manager - TELM-TPP-3 Proposed Action: Replace spacer dampers along the Dworshak PH-Dworshak No.1 500-kV transmission line Budget Information: Work Order 255064 PP&A Project No.: PP&A 1693 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.3, Routine maintenance activities...for structures, rights-of-way, infrastructures such as roads, equipment...routine maintenance activities, corrective....are required to maintain... infrastructures...in a condition suitable for a facility to be used for its designed purpose. Proposed by: Bonneville Power Administration (BPA) Location: BPA's proposed Dworshak PH-Dworshak No.1 transmission line spacer

259

Dissolution study of Metatorbernite: Thermodynamic Properties and the effect of pH and Phosphate  

SciTech Connect

Metatorbernite is a host of uranium that has been identified in the shallow vadose zone of the 300 A area at the Hanford site, WA, USA. Consequently, modeling the evolution of U concentrations in vadose zone porewaters driven by meteoric water recharge requires accurate knowledge of metatorbernite solubility. Previous determinations of the solubility constant for metatorbernite were under constrained. In the present contribution, the dissolution of natural metatorbernite crystals was studied at target pH 2.5 and 3.0, using both nitric and phosphoric acid. Steady state was approached from under- and super-saturation. The experiments and calculations yielded a preferred log Ksp = -28.0 ±0.1 that is significantly different than previously determined values. Further, both stoichiometric and non-stoichiometric dissolution was observed as a function of pH and aqueous phosphate concentration.

Ilton, Eugene S.; Zachara, John M.; Moore, Dean A.; McKinley, James P.; Eckberg, Alison D.; Cahill, Christopher L.; Felmy, Andrew R.

2010-10-25T23:59:59.000Z

260

Method of determining pH by the alkaline absorption of carbon dioxide  

DOE Patents (OSTI)

A method for measuring the concentration of hydroxides in alkaline solutions in a remote location using the tendency of hydroxides to absorb carbon dioxide. The method includes the passing of carbon dioxide over the surface of an alkaline solution in a remote tank before and after measurements of the carbon dioxide solution. A comparison of the measurements yields the absorption fraction from which the hydroxide concentration can be calculated using a correlation of hydroxide or pH to absorption fraction.

Hobbs, David T. (1867 Lodgepole Ave., N. Augusta, SC 29841)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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.


261

MPI-PhT/2003-28 Some results on distinction of Higgs boson models  

E-Print Network (OSTI)

MPI-PhT/2003-28 Some results on distinction of Higgs boson models #3; Jaume Guasch a , Wolfgang on the analysis of the ratio of branching ratios R = BR(H ! b #22; b)=BR(H ! #28; + #28; ) of Higgs boson decays and the e + e Linear Collider at 500 GeV center of mass energy. The search of a Higgs boson is nowadays

262

Effect of Aging Heat Treatments on Ni52Ti48 Shape Memory Alloy  

E-Print Network (OSTI)

Ni-rich NiTi shape memory alloys (SMAs) are capable of attaining a wide range of transformation temperatures depending on the heat treatment conditions and superior thermo-mechanical cycling stability, which are desired for repeated solid-state actuation. High Ni-content Ni-rich SMAs have very low transformation temperatures in a solutionized condition due to the high Ni-content of the matrix. Slow cooling (furnacecooling) from solutionizing temperature and additional aging heat treatments result in the formation of Ni-rich precipitates such as Ni4Ti3, Ni3Ti2 and Ni3Ti and increase transformation temperatures above ambient by depleting excess Ni from the matrix. However, the precipitates do not undergo a martensitic phase transformation and they decrease the transformation strain by reducing the volume fraction of the material capable of transforming. Meanwhile, recent preliminary work shows that Ni3Ti precipitates dominate fatigue failure. The objectives of the present study are: (1) to eliminate Ni3Ti but still have Ni4Ti3 precipitates, which are responsible for the dimensional stability and increase transformation temperatures, (2) to investigate the effect of heat treatments on the transformation strain, and (3) to select single variant Ni4Ti3 precipitates through constrained aging for the formation of oriented internal stress and eventually obtain twoway shame memory effect (TWSME) and enhanced dimensional stability. Based on these objectives, the effect of aging heat treatment on transformation temperatures, microstructural evolution, and shape memory behavior were investigated for a Ni52Ti48 shape memory alloy (SMA) by using differential scanning calorimetry (DSC), optical microscopy, scanning electron microscopy (SEM), and thermo-mechanical testing, including isobaric heating-cooling experiments under various stress levels. It was observed that solutionizing at 900 degree C for 24 hours eliminated Ni3Ti type precipitates, but additional aging heat treatments are needed to form Ni4Ti3 precipitates to increase transformation temperatures. Furnace-cooling and additional aging heat treatment results in the multi-stage martensitic transformation due to chemical and stress inhomogeneities in the microstructure. Aging of the controlled furnace-cooled material at 400 degree C for 48 hours resulted in the highest transformation temperatures among all processing conditions investigated due to the combination of Ni3Ti precipitates and 27 percent volume fraction of the Ni4Ti3 precipitates, which led to the depletion of Ni from the transforming matrix. However, since overaging results in losing coherency of the precipitates, dimensional stability during isobaric thermal cycling was negatively impacted.

Akin, Erhan

2010-08-01T23:59:59.000Z

263

Recovery of carboxylic acids at pH greater than pK{sub a}  

DOE Green Energy (OSTI)

Economics of producing carboxylic acids by fermentation is often dominated, not by the fermentation cost, but by the cost of recovering and purifying the acids from dilute aqueous solutions. Experiments were performed to measure uptakes of lactic and succinic acids as functions of pH by basic polymeric sorbents; sorbent regeneration was also tested. Performance at pH > pK{sub a} and regenerability depend on sorbent basicity; apparent pK{sub a} and monomer pK{sub a} can be used to predict sorbent performance. Two basic amine extractants, Alamine 336 and Amberlite LA-2, in were also studied; they are able to sustain capacity to higher pH in diluents that stabilize the acid-amine complex through H bonding. Secondary amines perform better than tert-amines in diluents that solvate the additional proton. Competitive sulfate and phosphate, an interference in fermentation, are taken up by sorbents more strongly than by extractants. The third step in the proposed fermentation process, the cracking of the trimethylammonium (TMA) carboxylate, was also examined. Because lactic acid is more soluble and tends to self-esterify, simple thermal cracking does not remove all TMA; a more promising approach is to esterify the TMA lactate by reaction with an alcohol.

Tung, L.A.

1993-08-01T23:59:59.000Z

264

Continuous fermentation of food scraps with constant pH control to produce carboxylic acids  

E-Print Network (OSTI)

Global energy demands combined with environmental restrictions are fueling a move to alternative energy sources. Biofuels are formed from biomass; the MixAlco process is one such method. In this work, food scraps are explored as a potential feedstock to the MixAlco process. Batch fermentation with various temperatures, buffers, and pH control methods elucidated the behavior of food scraps during fermentation. The pH and reactor configuration were limiting factors when maximizing production. A fermentor was developed and tested with constant pH control. This resulted in elevated concentration (100 g/L) and selectivity (82%) of desired products. The fermentation resulted in elevated concentrations, but low conversion of solids. The undigested material may serve as a nutrient source for fermenting lignocellulosic feedstocks. Combining various nutrient sources with lignocellulose, such as bagasse, resulted in additional production and further conversion. Multiple nutrient sources were tested resulting in total acid concentration ranging from 20.2 to 34.5 g/L.

Coleman Jr., Stanley Albert

2007-12-01T23:59:59.000Z

265

Synthesis and new structure shaping mechanism of silica particles formed at high pH  

SciTech Connect

For the sol-gel synthesis of silica particles under high pH catalytic conditions (pH>12) in water/ethanol solvent, we have deduced that the competing dynamics of chemical etching and sol-gel process can explain the types of silica particles formed and their morphologies. We have demonstrated that emulsion droplets that are generated by adding tetraethyl orthosilicate (TEOS) to a water-ethanol solution serve as soft templates for hollow spherical silica (1-2 {mu}m). And if the emulsion is converted by the sol-gel process, one finds that suspended solid silica spheres of diameter of {approx}900 nm are formed. Moreover, several other factors are found to play fundamental roles in determining the final morphologies of silica particles, such as by variation of the pH (in our case, using OH{sup -}) to a level where condensation dominates; by changing the volume ratios of water/ethanol; and using an emulsifier (specifically, CTAB) - Graphical abstract: 'Local chemical etching' and sol-gel process have been proposed to interpret the control of morphologies of silica particles through varying initial pHs in syntheses. Highlights: Black-Right-Pointing-Pointer Different initial pHs in our syntheses provides morphological control of silica particles. Black-Right-Pointing-Pointer 'Local chemical etching' and sol-gel process describes the formation of silica spheres. Black-Right-Pointing-Pointer The formation of emulsions generates hollow silica particles.

Zhang, Henan; Zhao, Yu [Department of Chemistry, The City College of The University of New York, 160 Convent Avenue, New York, NY 10031 (United States)] [Department of Chemistry, The City College of The University of New York, 160 Convent Avenue, New York, NY 10031 (United States); Akins, Daniel L., E-mail: akins@sci.ccny.cuny.edu [Department of Chemistry, The City College of The University of New York, 160 Convent Avenue, New York, NY 10031 (United States)

2012-10-15T23:59:59.000Z

266

MSC response to pH levels found in degenerating intervertebral discs  

Science Conference Proceedings (OSTI)

Painful degenerative disc disease is a major health problem and for successful tissue regeneration, MSCs must endure and thrive in a harsh disc microenvironment that includes matrix acidity as a critical factor. MSCs were isolated from bone marrow of Sprague-Dawley rats from two different age groups (<1 month, n = 6 and 4-5 months, n = 6) and cultured under four different pH conditions representative of the healthy, mildly or severely degenerated intervertebral disc (pH 7.4, 7.1, 6.8, and 6.5) for 5 days. Acidity caused an inhibition of aggrecan, collagen-1, and TIMP-3 expression, as well as a decrease in proliferation and viability and was associated with a change in cell morphology. Ageing had generally minor effects but young MSCs maintained greater mRNA expression levels. As acidic pH levels are typical of increasingly degenerated discs, our findings demonstrate the importance of early interventions and predifferentiation when planning to use MSCs for reparative treatments.

Wuertz, Karin [School of Engineering, University of Vermont, Burlington, Vermont (United States); Spine Research Group, Competence Center for Applied Biotechnology and Molecular Medicine, University of Zurich, Zurich (Switzerland)], E-mail: wuertz@cabmm.uzh.ch; Godburn, Karolyn; Iatridis, James C. [School of Engineering, University of Vermont, Burlington, Vermont (United States)

2009-02-20T23:59:59.000Z

267

Automated system developed to control pH and concentration of nutrient solution evaluated in hydroponic lettuce production  

Science Conference Proceedings (OSTI)

Lettuce is one of the most widely consumed leaf vegetables. In hydroponic the growth depends upon the composition of nutrient solution. Due to its nutrient absorption, the conductivity and pH suffer continuous variations. This paper describes the development ... Keywords: Automated system, Conductivity and hydroponic lettuce, pH

Diego S. Domingues; Hideaki W. Takahashi; Carlos A. P. Camara; Suzana L. Nixdorf

2012-06-01T23:59:59.000Z

268

Effect of the top electrode materials on the resistive switching characteristics of TiO{sub 2} thin film  

Science Conference Proceedings (OSTI)

Various metals, such as Pt, stainless steel (SUS), Al, Ni, and Ti, were used as a top electrode (TE) to evaluate the dependency of the resistive switching characteristics on the TE of the metal/TiO{sub 2}/Pt structure. The variation of the chemical composition of TiO{sub 2} in the metal/TiO{sub 2}/Pt structure before and after switching was examined to identify the factors affecting the resistive switching characteristics of the samples with various TE materials. In the case of TE/TiO{sub 2}/Pt structures showing unstable resistive switching behavior, e.g., those with the Al, Ni, and Ti TEs, secondary ion mass spectrometry revealed an increase in the oxygen concentration at the interface area between the TE metal and TiO{sub 2}. This suggests that the oxidation reaction at the interface between the TE metal and TiO{sub 2} might cause the TE/TiO{sub 2}/Pt structure to exhibit unstable resistive switching characteristics. According to these results, the oxidation reaction at the interface between the metal TE and TiO{sub 2} thin film is a primary factor affecting the resistive switching characteristics of TiO{sub 2}-based Resistive Random Access Memory devices.

Oh, Sang Chul [Department of Nano-Semiconductor Engineering, Korea University, Seoul 136-701 (Korea, Republic of); Jung, Ho Yong [Department of Material Science and Engineering, Korea University, Seoul 136-701 (Korea, Republic of); R and D Division, Hynix Semiconductor Inc., Cheongju 361-725 (Korea, Republic of); Lee, Heon [Department of Nano-Semiconductor Engineering, Korea University, Seoul 136-701 (Korea, Republic of); Department of Material Science and Engineering, Korea University, Seoul 136-701 (Korea, Republic of)

2011-06-15T23:59:59.000Z

269

TiO{sub 2}/carbon nanotube hybrid nanostructures: Solvothermal synthesis and their visible light photocatalytic activity  

Science Conference Proceedings (OSTI)

MWCNT/TiO{sub 2} hybrid nanostructures were prepared via solvothermal synthesis and sol-gel method with benzyl alcohol as a surfactant. As-prepared hybrid materials were characterized by X-ray diffraction, transmission electron microscopy, UV-vis diffuse reflectance spectra and X-ray photoelectron spectroscopy. The results showed that MWCNTs were uniformly decorated with anatase nanocrystals in solvothermal condition, but MWCNTs were embedded in a majority of TiO{sub 2} nanoparticles by sol-gel method. When the weight ratio of MWCNTs to TiO{sub 2} was 20%, MWCNT/TiO{sub 2} hybrid nanostructures prepared by solvothermal synthesis exhibited higher visible-light-driven photocatalytic activity than that prepared by sol-gel method. Post-annealing of MWCNT/TiO{sub 2} nanostructures at 400 deg. C resulted in the formation of the carbonaceous Ti-C bonds on the interface between TiO{sub 2} and MWCNTs, which enhanced the photoabsorbance of the hybrid materials in the visible light region and improved the visible-light degradation efficiency of methylene blue. - Graphical abstract: MWCNT/TiO{sub 2} nanostructures have been prepared by solvothermal method, which exhibited higher visible-light-driven photocatalytic activity than that prepared by sol-gel method. The carbonaceous Ti-C bonds on the interface between TiO{sub 2} and MWCNTs enhanced the photoabsorbance of the hybrid materials in the visible light region. Highlights: > Anatase TiO{sub 2} nanoparticles were anchored on CNTs surface uniformly via solvothermal method {yields} The morphology facilitated the electron transfer between CNTs and TiO{sub 2} {yields} Ti-C bonds extended the absorption of MWCNT/TiO{sub 2} to the whole visible light region. > The hybrid nanostructures showed enhanced visible-light induced photocatalytic activity.

Tian Lihong [College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China); College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062 (China); Ye Liqun [College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China); Deng Kejian [Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Education, South-Central University for Nationalities, Wuhan 430074 (China); Zan Ling, E-mail: irlab@whu.edu.cn [College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China)

2011-06-15T23:59:59.000Z

270

PH Sensitive Polymers for Improving Reservoir Sweep and Conformance Control in Chemical Flooring  

SciTech Connect

There is an increasing opportunity to recover bypassed oil from depleted, mature oilfields in the US. The recovery factor in many reservoirs is low due to inefficient displacement of the oil by injected fluids (typically water). The use of chemical flooding methods to increase recovery efficiencies is severely constrained by the inability of the injected chemicals to contact the bypassed oil. Low sweep efficiencies are the primary cause of low oil recoveries observed in the field in chemical flooding operations even when lab studies indicate high oil recovery efficiency. Any technology that increases the ability of chemical flooding agents to better contact the remaining oil and reduce the amount of water produced in conjunction with the produced oil will have a significant impact on the cost of producing oil domestically in the US. This translates directly into additional economically recoverable reserves, which extends the economic lives of marginal and mature wells. The objective of this research project was to develop a low-cost, pH-triggered polymer for use in IOR processes to improve reservoir sweep efficiency and reservoir conformance in chemical flooding. Rheological measurements made on the polymer solution, clearly show that it has a low viscosity at low pH and exhibits a sudden increase in viscosity (by 2 orders of magnitude or more) at a pH of 3.5 to 4. This implies that the polymer would preferentially flow into zones containing water since the effective permeability to water is highest in these zones. As the pH of the zone increases due to the buffering capacity of the reservoir rock, the polymer solution undergoes a liquid to gel transition causing a sharp increase in the viscosity of the polymer solution in these zones. This allows operationally robust, in-depth conformance treatment of such water bearing zones and better mobility control. The rheological properties of HPAM solutions were measured. These include: steady-shear viscosity and viscoelastic behavior as functions of pH; shear rate; polymer concentration; salinity, including divalent ion effects; polymer molecular weight; and degree of hydrolysis. A comprehensive rheological model was developed for HPAM solution rheology in terms of: shear rate; pH; polymer concentration; and salinity, so that the spatial and temporal changes in viscosity during the polymer flow in the reservoir can be accurately modeled. A series of acid coreflood experiments were conducted to understand the geochemical reactions relevant for both the near-wellbore injection profile control and for conformance control applications. These experiments showed that the use hydrochloric acid as a pre-flush is not viable because of the high reaction rate with the rock. The use of citric acid as a pre-flush was found to be quite effective. This weak acid has a slow rate of reaction with the rock and can buffer the pH to below 3.5 for extended periods of time. With the citric acid pre-flush the polymer could be efficiently propagated through the core in a low pH environment i.e. at a low viscosity. The transport of various HPAM solutions was studied in sandstones, in terms of permeability reduction, mobility reduction, adsorption and inaccessible pore volume with different process variables: injection pH, polymer concentration, polymer molecular weight, salinity, degree of hydrolysis, and flow rate. Measurements of polymer effluent profiles and tracer tests show that the polymer retention increases at the lower pH. A new simulation capability to model the deep-penetrating mobility control or conformance control using pH-sensitive polymer was developed. The core flood acid injection experiments were history matched to estimate geochemical reaction rates. Preliminary scale-up simulations employing linear and radial geometry floods in 2-layer reservoir models were conducted. It is clearly shown that the injection rate of pH-sensitive polymer solutions can be significantly increased by injecting it at a pH below 3.5 (at a fixed bottom-hole pressure). This improvement in injectivity by a fa

Mukul Sharma; Steven Bryant; Chun Huh

2008-03-31T23:59:59.000Z

271

XAFS study of CoxTi?-xO?-x-anatase  

SciTech Connect

Co doped TiO? anatase is a promising candidate dilute magnetic semiconductor (DMS). DMS materials have potential applications in spintronics devices. These utilize the spin of carriers, and offer the promise of new devices with enhanced functionality. The application of DMS materials to spintronics is as spin injectors. These materials can have spin-polarized states in their valence or conduction bands. At interfaces with nonmagnetic semiconductors they can then be used for spin polarized carrier injection, allowing for the fabrication of novel devices utilizing spin. Theory and measurements indicate that they can be much more efficient spin injectors than ferromagnetic metals. This report describes some recent XAFS studies of these materials using the PNC-CAT beamlines at the APS.

Heald, Steve M.; Chambers, Scott A.; Droubay, Timothy

2005-01-01T23:59:59.000Z

272

Model NbTi Helical Solenoid Fabrication and Test Results  

Science Conference Proceedings (OSTI)

A program to develop model magnets for a helical cooling channel is under way at Fermilab. In the first steps of a planned sequence of magnets, two four-coil helical solenoid models with 300 mm aperture have been fabricated and tested. These two models, HSM01 and HSM02, used insulated NbTi Rutherford cable wound onto stainless steel rings with spliceless transitions between coils. Strip heaters were included for quench protection of each coil, and the coils were epoxy-impregnated after winding inside the support structures. Based on the results of the first model the second model was made using a cable with optimized cross-section, improved winding and epoxy-impregnation procedures, enhanced ground insulation, and included heat exchange tubing for a test of conduction cooling. We report on the results and lessons learned from fabrication and tests of these two models.

Andreev, N.; Barzi, E.; Chlachidze, G.; Evbota, D.; Kashikhin, V.S.; Kashikhin, V.V.; Lamm, M.J.; Makarov, A.; Novitski, I.; Orris, D.F.; Tartaglia, M.A.; /Fermilab

2011-09-01T23:59:59.000Z

273

The investigation of die-pressing and sintering behavior of ITP CP-Ti and Ti-6Al-4V powders  

SciTech Connect

This paper investigated the die-pressing and sintering behavior of the low-cost CP-Ti and Ti-6Al- 4V powders made by the Armstrong Process . The Armstrong powders have an irregular coral like, dendritic morphology, with a dendrite size of approximately 2-5 m. As-received as well as milled powders were uniaxially pressed at designated pressures up to 690 MPa to form disk samples with different aspect ratios. In the studied pressure range, an empirical powder compaction equation was applied to linearize the green density pressure relationship, and powder compaction parameters were obtained. The Armstrong Ti-64 powder exhibited a significantly higher sinterability than the CP-Ti powder. This was explained to be due to the higher diffusivity of V at the sintering temperature. The Ti-64 samples with a green density of 71.0% increased to 99.6% after sintering at 1300oC for 1 hour. An ex-situ technique was used to track the powder morphology change before and after sintering.

Chen, Wei [ORNL; Yamamoto, Yukinori [ORNL; Peter, William H [ORNL; Clark, Michael B [ORNL; Nunn, Stephen D [ORNL; Kiggans, Jim [ORNL; Muth, Thomas R [ORNL; Blue, Craig A [ORNL; Williams, James C [Ohio State University; Fuller, Brian [International Titanium Powder; Akhtar, Kamal [International Titanium Powder

2012-01-01T23:59:59.000Z

274

Influence of Dissolved Organic Carbon and pH on Containment Sorption to Sediment  

DOE Green Energy (OSTI)

Low-Level Waste buried on the SRS contains cellulosic materials, Including wood, paper, and cardboard. Once buried, these materials are expected to degrade to form cellulose degradation products (CDP). Such materials are expected to influence radionuclide speciation in such a way that the radionuclides will sorb less to SRS Subsurface sediments and therefore would migrate more rapidly from the disposal site. The objective of this study was to quantify through laboratory work the influence of CDP and pH on radionuclide sorption to SRS subsurface sediments. The intent of this work was to create a Kd look-up table as a function of radionuclide, pH, and CDP concentration that could be used in future performance assessment calculations. Previous CDP-impacted Kd values were generated using two chemical analogues, UO2 2+ and Eu3+. This study collected data from a wider range of analogues to validate and/or refine this approach. An incomplete-randomized-block-statistical design was used in a laboratory sorption study involving 2 soil types (sandy and clay textured), 5 dissolved organic carbon concentrations (a measure of CDP), and 3 pH levels. Nonradioactive solutes were used as chemical analogues to the radionuclides of interest to the Low-Level Waste Performance Assessment: monovalent cations (K+ and Cs+), divalent cations (Ni2+ and Sr2+), trivalent cations (Ce3+ and Eu3+), tetravalent cations (Th4+ and Zr4+), and an anion (ReO4-). Analogues were matched to approximately 30 radionuclides based on similarities in periodicity and chemical properties. All CDP-impacted Kd values generated from this study were equal to or greater than those used in previous performance assessments. These larger Kd values may result in a greater Waste Acceptance Criteria (WAC), which in turn may permit greater amounts of Low-Level Waste to be safely disposed on site, saving the site the expense of shipping the waste off-site for disposal.

KAPLAN, DANIEL

2004-09-30T23:59:59.000Z

275

Method of determining pH by the alkaline absorption of carbon dioxide  

DOE Patents (OSTI)

A method is described for measuring the concentration of hydroxides in alkaline solutions in a remote location using the tendency of hydroxides to absorb carbon dioxide. The method includes the passing of carbon dioxide over the surface of an alkaline solution in a remote tank before and after measurements of the carbon dioxide solution. A comparison of the measurements yields the absorption fraction from which the hydroxide concentration can be calculated using a correlation of hydroxide or pH to absorption fraction. 2 figs.

Hobbs, D.T.

1992-10-06T23:59:59.000Z

276

Benefits and technological challenges in the implementation of TiO2-based  

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

Benefits and technological challenges in the implementation of TiO2-based Benefits and technological challenges in the implementation of TiO2-based ultraviolet photocatalytic oxidation (UVPCO) air cleaners Title Benefits and technological challenges in the implementation of TiO2-based ultraviolet photocatalytic oxidation (UVPCO) air cleaners Publication Type Conference Proceedings Year of Publication 2008 Authors Hodgson, Alfred T., Hugo Destaillats, Toshifumi Hotchi, and William J. Fisk Conference Name Indoor Air 2008 Pagination 17-22 Date Published August 2008 Publisher Indoor Air, Paper ID: 297 Conference Location Copenhagen, Denmark Abstract Indoor air cleaners based on TiO2 photocatalytic oxidation of organic pollutants are a promising technology to improve or maintain indoor air quality while reducing ventilation energy costs. We evaluated the performance of a pilot scale UVPCO air cleaner under realistic conditions in single pass and recirculation modes

277

Phase Transformation and Equilibrium Diagram of Ti-Al-Nb Ternary ...  

Science Conference Proceedings (OSTI)

The phase type and distribution range of Ti-Al-Nb ternary alloy, as well as calculated phase diagram, were directly obtained by TC calculation, as a instruction of ...

278

Mixed nanostructured Ti-W oxides films for efficient electrochromic windows  

Science Conference Proceedings (OSTI)

With the aim to enhance the electrochromic (EC) efficiency and electrochemical stability of electrochromic devices (ECD), mixed nanostructured TiO2/WO3 films were prepared by an electrochemical deposition method with the purpose ...

Nguyen Nang Dinh; Dang Hai Ninh; Tran Thi Thao; Truong Vo-Van

2012-01-01T23:59:59.000Z

279

Synthesis and Analysis of TiO2-Oligonucleotide Hybrid Nanoparticles  

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

Synthesis and Analysis of TiO2-Oligonucleotide Hybrid Nanoparticles Synthesis and Analysis of TiO2-Oligonucleotide Hybrid Nanoparticles New developments in nanotechnology offer the creation of chemical-biological hybrid nanocomposites, which can be introduced into cells to initiate intracellular processes or biochemical reactions. Researchers from Northwestern University Medical Center (Chicago, IL) and Argonne National Laboratory synthesized TiO2-oligonucleotide nanocomposites made of DNA oligonucleotides attached to 45-Ã… TiO2 nanoparticles and tested them by using the 2-ID-E x-ray beamline at the X-ray Operations and Research sector 2 of the APS. A key benefit of nanocomposites is that they could advance medical biotechnology and open new doors in chemistry and materials sciences. Scan of a 21 x 21-m area with a single nucleus containing 3.6 x 106 nanoparticles.

280

NiTiHf High-Temperature Shape-Memory Alloys for near Term ...  

Science Conference Proceedings (OSTI)

Development of a SMA-Based Drive Unit for Prehension Orthoses to Support Disabled People · Effect of H in Metals and Alloys: An Application to bcc W and NiTi ...

Note: This page contains sample records for the topic "ti ng ph" 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

Characterization of New Phases in the Ti-Pt System Relevant to ...  

Science Conference Proceedings (OSTI)

Development of a SMA-Based Drive Unit for Prehension Orthoses to Support Disabled People · Effect of H in Metals and Alloys: An Application to bcc W and NiTi ...

282

Structure-Property Relationships for Ni-Ti-Pt High Temperature ...  

Science Conference Proceedings (OSTI)

Development of a SMA-Based Drive Unit for Prehension Orthoses to Support Disabled People · Effect of H in Metals and Alloys: An Application to bcc W and NiTi ...

283

D-10: The Effect of Molybdenum on Nb,Ti(C,N) Precipitate Evolution ...  

Science Conference Proceedings (OSTI)

The effects of molybdenum on niobium-bearing carbonitride interfacial ... D-7: Quantification of Compositional Effects on Transformation Kinetics in High ... D-9: Study of Shear Behavior of Al, TiN, and Their Interface Using ab intio Method.

284

Reactivity of Ti2AlC with SiC Fibers and Powders up to ...  

Science Conference Proceedings (OSTI)

Herein we investigated the reactivity of Ti2AlC [3ONE2] with SiC fibers [Avco Specialty Materials and Nippon Carbon Co.] and fine SiC powders [Superior ...

285

Colossal dielectric constant and relaxation behaviors in Pr:SrTiO{sub 3} ceramics  

Science Conference Proceedings (OSTI)

Sr{sub 1-x}Pr{sub x}TiO{sub 3} ceramics (0.00{<=}x{<=}0.03) were prepared by a traditional solid-state reaction method. Two relaxation processes (marked as A and B) of the Sr{sub 0.09}Pr{sub 0.01}TiO{sub 3} ceramics were investigated by analyzing the E{sub a} values obtained from the Arrhenius law. Colossal dielectric constant (CDC) was first obtained in Sr{sub 0.09}Pr{sub 0.01}TiO{sub 3} ceramics, whose permittivity was up to 3000 (1 kHz, room temperature), greater than that of pure SrTiO{sub 3} ceramics and samples with more Pr addition (x=0.02 and 0.03). This CDC behavior was related to the internal barrier layer capacitance mechanism.

Liu Cheng; Liu Peng; Zhou Jianping; Su Lina; Cao Lei [College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062 (China); He Ying; Zhang Huaiwu [State Key Laboratory of Electronic Thin Film and Intergrated Devices, University of Electronic Science and Technology of China, Chengdu 610054 (China)

2010-05-15T23:59:59.000Z

286

Effect of Milling Parameters on the Dehydrogenation Properties of the Mg-Ti-H system  

DOE Green Energy (OSTI)

Magnesium-based alloys are promising candidates as potential hydrogen storage materials due to their inherent high hydrogen contents. Small particle size which can be achieved by milling, and small amounts of transition-metal compounds as catalysts result in increased hydrogen release/uptake kinetics. In this work, we examined the effects of various milling parameters and TiH2 content on the dehydrogenation properties of the Mg-Ti-H system. The samples were prepared with different amounts of TiH2 using various milling methods and conditions. The activation energy and the enthalpy change of dehydrogenation of the milled samples were determined by Thermogravimetric Analysis (TGA) and Differential Thermal Analyzer (DTA). The results indicated that the activation energy and enthalpy change of MgH2 dehydrogenation were significantly reduced when 9.1 mol % of TiH2 was added to it and the mixture was milled in a dual planet

Choi, Young Joon; Lu, Jun; Sohn, Hong Yong; Fang, Zhigang Zak; Ronnebro, Ewa

2009-11-05T23:59:59.000Z

287

Ian Foster, Ti Leggett, Mike Papka, Mike Wilde Win the Analytics...  

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

Ti Leggett, Mike Papka, and Mike Wilde were part of the team that won the Analytics Challenge at SC07 for presenting a new approach for protecting cyberinfrastructure. The...

288

U.S. Department of Energy DOE/PC89659-TI THE COAL REBURNING FOR  

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

U.S. Department of Energy DOEPC89659-TI THE COAL REBURNING FOR CYCLONE BOILER NO X CONTROL DEMONSTRATION PROJECT A DOE ASSESSMENT Prepared by: The Office of Clean Coal technology...

289

Self-assembled TiO2-Graphene Hybrid Nanostructures for Enhanced Li-ion Insertion  

SciTech Connect

We used anionic sulfate surfactants to assist the stabilization of graphene in aqueous solutions and facilitate the self-assembly of in-situ grown nanocrystalline TiO2, rutile and anatase, with graphene. These nanostructured TiO2-graphene hybrid materials were used for investigation of Li-ion insertion properties. The hybrid materials showed significantly enhanced Li-ion insertion/extraction in TiO2. The specific capacity was more than doubled at high charge rates, as compared with the pure TiO2 phase. The improved capacity at high charge-discharge rate may be attributed to increased electrode conductivity in presence of a percolated graphene network embedded into the metal oxide electrodes.

Wang, Donghai; Choi, Daiwon; Li, Juan; Yang, Zhenguo; Nie, Zimin; Kou, Rong; Hu, Dehong; Wang, Chong M.; Saraf, Laxmikant V.; Zhang, Jiguang; Aksay, Ilhan A.; Liu, Jun

2009-04-01T23:59:59.000Z

290

The progress of TiO2 nanocrystals doped with rare earth ions  

Science Conference Proceedings (OSTI)

In the past decades, TiO2 nanocrystals (NCs) have been widely studied in the fields of photoelectric devices, optical communication, and environment for their stability in aqueous solution, being nontoxic, cheapness, and so on. Among the three ...

Hai Liu; Lixin Yu; Weifan Chen; Yingyi Li

2012-01-01T23:59:59.000Z

291

An Orography-Associated Extreme Rainfall Event during TiMREX: Initiation, Storm Evolution, and Maintenance  

Science Conference Proceedings (OSTI)

This study investigates a long-duration mesoscale system with extremely heavy rainfall over southwest Taiwan during the Terrain-influenced Monsoon Rainfall Experiment (TiMREX). This mesoscale convective system develops offshore and stays quasi-...

Weixin Xu; Edward J. Zipser; Yi-Leng Chen; Chuntao Liu; Yu-Chieng Liou; Wen-Chau Lee; Ben Jong-Dao Jou

2012-08-01T23:59:59.000Z

292

Fabrication and Characterization of Oriented Fe-Y2Ti2O7 Interfaces  

Science Conference Proceedings (OSTI)

... created by electron beam deposition of Fe on {111} Y2Ti2O7 bulk single crystal surfaces. ... Characterizing Complex Metal-oxide Interfaces via Virtual Diffraction ... Microstructurally Explicit Study of Trasport Phenomena in Uranium Oxide.

293

Preparation of Highly Crystalline TiO2 Nanostructures by Acid ...  

Science Conference Proceedings (OSTI)

Aug 11, 2010 ... Figure 1 shows the typical TEM images of the Hex-. ncTiO2/CTAB .... band energy of 3.2 and 3.0 eV, respectively [1]. The valance band of ...

294

Improving Stress Rupture Life of Alloy 718 by Optimizing Al, Ti ... - TMS  

Science Conference Proceedings (OSTI)

IhlPRO\\.'IIVG STRESS RUPTURE LIFE OF ALLOY 718 BY. OPTIXllZING AL, TI, P AND B CONTENTS. W. D. Cao and R. L. Kennedy. ,All\\ ac. An Allegheny ...

295

TiO2-based photocatalytic process for purification of polluted water: bridging fundamentals to applications  

Science Conference Proceedings (OSTI)

Recent years have witnessed a rapid accumulation of investigations on TiO2-based photocatalysis, which poses as a greatly promising advanced oxidation technology for water purification. As the ability of this advanced oxidation process is ...

Chuan Wang, Hong Liu, Yanzhen Qu

2013-01-01T23:59:59.000Z

296

The development and synthetic applications of Ti- and Pd-catalyzed processes  

E-Print Network (OSTI)

Chapter 1. Ti-Catalyzed Asymmetric Reduction of Aromatic Heterocycles A method for the highly selective asymmetric reduction of quinoxalines and quinazolines was developed. This complements technologies developed by others ...

Hyde, Alan M. (Alan Michael)

2009-01-01T23:59:59.000Z

297

Microstructure Formation in Ti3SiC2-Cu Composites Produced by ...  

Science Conference Proceedings (OSTI)

Under low-energy milling, (3-5) vol.%Ti3SiC2–Cu composite particles of platelet morphology formed, which could be easily SPS-ed to 92-95% relative density.

298

Magnetoresistance in nanostructured Tb/Ti and Tb/Si multilayers  

SciTech Connect

Magnetic, magnetoresistive and structural properties were studied for [Tb/Ti]{sub n} and [Tb/Si]{sub n} multilayers which were prepared by rf-sputtering. The thickness of the Tb layers varied from 1.5 to 12 nm. The thickness of 2 nm nonmagnetic spacers of Ti or Si was kept constant. Both anisotropic and isotropic magnetoresistance was observed in [Tb/Ti]{sub n} and [Tb/Si]{sub n} multilayers. A decrease in the thickness of the terbium layers led to a decrease in the anisotropic contribution to the total magnetoresistance. The negative isotropic magnetoresistanse in [Tb/Ti]{sub n} and [Tb/Si]{sub n} multilayers can be attributed to the giant magnetoresistance (GMR) and/or high field isotropic magnetoresistance. The structure of the samples of both types enabled the existence of the GMR effect.

Svalov, A. V.; Kurlyandskaya, G. V. [Dpto. Electricidad y Electronica, Universidad del Pais Vasco (UPV-EHU), 48080 Bilbao (Spain); Ural State University A.M. Gorky, 620083 Ekaterinburg (Russian Federation); Vas'kovskiy, V. O.; Sorokin, A. N. [Ural State University A.M. Gorky, 620083 Ekaterinburg (Russian Federation); Diercks, D. [Center for Advanced Research and Technology, University of North Texas, Denton, Texas 76203-5017 (United States)

2011-01-15T23:59:59.000Z

299

Effect factors of benzene adsorption and degradation by nano-TiO2 immobilized on diatomite  

Science Conference Proceedings (OSTI)

Difference between adsorption of benzene by diatomite and nano-TiO2 immobilized on diatomite was investigated. And effects of temperature, light intensity, relative humidity, and initial benzene concentration on adsorption and degradation ...

Lijun Cheng, Yong Kang, Guishui Li

2012-01-01T23:59:59.000Z

300

Effects of Processing Parameters on Macrozone Formation in Ti-6Al ...  

Science Conference Proceedings (OSTI)

Composition Design of Multi-Component ?-Ti Alloys Based on a Cluster Model · Consolidation of Blended Titanium/Magnesium Powders by Microwave Processing ... Rheological Properties of Feedstock Composed of Titanium Alloy Powder ...

Note: This page contains sample records for the topic "ti ng ph" 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

Gas-supported high-photoactivity TiO2 nanotubes  

Science Conference Proceedings (OSTI)

By changing hydrothermal condition and post-heat-treatment temperature, silica-coated TiO2 nanotubes are obtained successfully. The effects of gas-supported process on tubular morphology, crystallinity, and photocatalytic activity are discussed. ...

Sheng Wang, Tao Wang, Yuanwei Ding, Youfeng Xu, Qiying Su, Yanlong Gao, Guohua Jiang, Wenxing Chen

2012-01-01T23:59:59.000Z

302

Efficient multi?keV x?ray sources from Ti?doped aerogel targets  

Science Conference Proceedings (OSTI)

We have measured the production of hv ? 4.7 keV x?rays from low?density Ti?doped aerogel (? ? 3 mg/cc) targets at the OMEGA laser facility (University of Rochester)

K. B. Fournier; C. Constantin; G. Gregori; M. C. Miller; C. A. Back; L. J. Suter; J. Davis; J. Grun

2004-01-01T23:59:59.000Z

303

Visible-Light Water-Splitting Performance of TiO - Programmaster.org  

Science Conference Proceedings (OSTI)

Presentation Title, Visible-Light Water-Splitting Performance of TiO2 ... Ammonia Borane for Chemical Hydrogen Storage: Effect of Nano-Confinement ... Thermodynamic Characterization on Hydrogen Absorption and Desorption Reactions of ...

304

Strain dependencies of energetic, structural, and polarization properties in tetragonal (PbTiO3)1/(SrTiO3)1 and (BaTiO3)1/(SrTiO3)1 superlattices: a comparative study with bulks  

E-Print Network (OSTI)

First-principles density functional calculations are performed to investigate the interplay between inplane strains and interface effects in 1by1 PbTiO3/SrTiO3 and BaTiO3/SrTiO3 superlattices of tetragonal symmetry. One particular emphasis of this study is to conduct side-by-side comparisons on various ferroelectric properties in short-period superlattices and in constituent bulk materials, which turns out to be rather useful in terms of obtaining valuable insight into the different physics when ferroelectric bulks form superlattices. The various properties that are studied in this work include the equilibrium structure, strain dependence of mixing energy, microscopic ferroelectric off-center displacements, macroscopic polarization, piezoelectric coeffcients, effective charges, and the recently formulated k-dependent polarization dispersion structure. The details of our findings are rather lengthy, and are summarized in Sec. IV.

Yao, Yanpeng

2010-01-01T23:59:59.000Z

305

Ferroelectric Self-assembled PbTiO3 Perovskite Nanostructures...  

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

For this, samples were deposited onto conductive Nb-doped (100)SrTiO3 substrates. Local piezoelectric and phase hysteresis loops were measured in the regions of the coating where...

306

Variation of electrical resistance in superelastic NiTi for sensor applications  

E-Print Network (OSTI)

Nickel-Titanium (NiTi) is a most commonly known as a heat-activated shape memory alloy. However, the material sometimes displays a constant-temperature property called "superelasticity." A superelastic material is one which ...

Russo, Analisa

2008-01-01T23:59:59.000Z

307

Nanoindentation Studies Of Hard Nanocomposite Ti-B-N Thin Films  

Science Conference Proceedings (OSTI)

Titanium boron nitride (Ti-B-N) films were deposited by reactive magnetron sputtering using single Titanium diboride (TiB{sub 2}) target in different Ar-N{sub 2} gas mixtures. The influence of N{sub 2}:Ar ratio on the microstructure and mechanical properties of the deposited films have been investigated. Atomic force microscopy analysis indicated the grain size decreases with incorporation of nitrogen in the films. Nanoindentation studies have shown the hardness decreases with nitrogen incorporation.

Rupa, P. Karuna Purnapu [Non Ferrous Materials Technology Development Center, Kanchanbagh, Hyderabad (India); Chakraborty, P. C. [Department of Metallurgy and Materials Science, Jadavpur University, Kolkata (India); Mishra, Suman Kumari [National Metallurgical Laboratory, Jamshedpur India (India)

2011-12-12T23:59:59.000Z

308

Low Dose Radiation Research Program: Kanokporn Noy Rithidech, Ph.D.  

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

Kanokporn Noy Rithidech, Ph.D. Kanokporn Noy Rithidech, Ph.D. University of New York at Stony Brook Currently Funded Projects Induction of Genomic Instability In vivo by Low Doses of 137Cs Gamma Rays Technical Abstracts 2006 Workshop: No Evidence for In Vivo Induction of Genomic Instability in Bone Marrow Cells Collected from Mice Exposed to Low-Dose 137CS γ Rays Rithidech, K.N., Loetchutinat, C., Honikel, L., and Whorton, E.B. 2005 Workshop: Induction of Genomic Instability in Vivo by Low Doses of 137Cs γ rays. Rithidech, K.N., Leotchutinat, C., Honikel, L., Simon, S.R. and Whorton, E.B. 2003 Workshop: Induction of Genomic Instability in vivo by Low Doses of 137Cs y rays Rithidech. K., Whorton, E.B., Tungjai, M., Ar-Bab, E., Simon, S.R. Tawde, M. and Anderson, C.W. 2002 Workshop: Induction of Genomic Instability In vivo by Low Doses of 137Cs gamma rays.

309

The Science Impact of Astronomy PhD Granting Departments in the United States  

E-Print Network (OSTI)

The scientific impact of the research of 36 astronomy PhD granting departments is measured and ranked here. Because of the complex nature of Universities, this study looks at the Universities in two ways; first analyzing the impact of the published work over a 10 year period of the Department which grants the PhD and; second, looking at the impact of the published work as a whole including Laboratories, Centers, and Facilities. The Universities considered in the study are drawn from the 1992 NRC study on Programs of Research, Doctorate in Astrophysics and Astronomy with three Universities added. Johns Hopkins, Michigan State, and Northwestern all host substantial astronomical research within their Departments of Physics and Astronomy and so are included here. The first method of measuring impact concentrates on tenured and tenured track faculty, with the top quartile being 1. Caltech, 2. UC Santa Cruz, 3. Princeton, 4. Harvard, 5. U Colorado, Boulder, 6. SUNY, Stony Brook, 7. Johns Hopkins, 8. Penn State, and...

Kinney, Anne L

2008-01-01T23:59:59.000Z

310

Interfaces in Ti[sub 3]Al composites reinforced with sigma SiC fibres  

Science Conference Proceedings (OSTI)

When SCS-6 fibers are used for reinforcing Ti[sub 3]Al matrices, a [beta]-depleted zone is often found in the matrix adjacent to the interface, varying from 3 to 7 [mu]m in thickness depending on the composition of the matrix. The cause for such depletion is believed to be the migration of the [beta] stabilizer, Nb, from the adjacent matrix into the reaction zone, which forms Nb-containing compounds such as (Ti,Nb)C and (Ti,Nb)[sub 5]Si[sub 3]. The depletion of [beta] near the interface can enhance the propensity for interfacial cracking as the more brittle [alpha][sub 2] phase is enriched. Here, the authors present a study of the interfaces in a Ti[sub 3]Al/SiC Sigma fiber composite. The reaction products, changes in microstructure and reaction kinetics are compared with Ti-6Al-4V matrix containing Sigma fibers and Ti[sub 3]Al matrices containing SCS fibers.

Guo, Z.X.; Derby, B. (Univ. of Oxford (United Kingdom). Dept. of Materials)

1994-01-01T23:59:59.000Z

311

Chirped-Pulse Amplification with flashlamp-pumped Ti:Sapphire amplifiers  

Science Conference Proceedings (OSTI)

Ti:Sapphire (Ti:Al{sub 2}O{sub 3}) amplifier stages are typically pumped with Q-switched Nd:YAG lasers doubled to 532 nm because of good spectral overlap, short temporal width, high repetition rate (i.e., 10 Hz to > 5 kHz) and the problems associated with flashlamp pumping a material with a relatively short upper state lifetime. Limitations to this pumping method arise due to the 1 to 1.5 joule/pulse ceiling found in most commercial high rep rate Nd:YAG lasers. The availability of high quality, large aperture Ti:Sapphire rods has made the flashlamp-pumping scheme an attractive option. The excellent thermal properties of Ti:Sapphire also allows an amplifier to be operated at high repetition rates. The front end of our laser relies on Chirped Pulse Amplification (CPA) in laser pumped Ti:Sapphire to generate 55 NJ, 90 fsec pulses at a 10 Hz rate. We report the use of a flashlamp pumped Ti:Sapphire head to further amplify the output of our system, producing 90 fsec, 250 NJ pulses at 5 Hz. The excellent output spatial profile yields a near diffraction-limited 5 {mu}m spot size and peak irradiance in excess of 5 {times} 10{sup 18} W/cm{sup 2}.

Bonlie, J.D.; White, W.E.; Price, D.F.; Reitze, D.H.

1994-01-01T23:59:59.000Z

312

Lithium insertion into hollandite-type TiO{sub 2}.  

DOE Green Energy (OSTI)

Hollandite-type TiO{sub 2} compounds, isostructural with {alpha}-MnO{sub 2}, have been investigated as insertion electrodes for lithium batteries. Parent materials of K{sub x}Ti{sub 8}O{sub 16} (0 < x < 2) were treated with concentrated acid to yield TiO{sub 2} products that were essentially free of potassium. Lithium can be inserted into the (2 x 2) tunnels of the TiO{sub 2} structure chemically (with n-butyllithium) and electrochemically to an approximate composition Li{sub 0.5}TiO{sub 2}. The lithium ions can be easily removed from the lithiated structure by chemical reaction with bromine; cyclic voltammetry indicates that high voltages are required to remove the lithium by electrochemical methods. The poor electrochemical behavior of hollandite-TiO{sub 2} contrasts strongly with {alpha}-MnO{sub 2} electrodes. The superior properties of {alpha}-MnO{sub 2} electrodes are attributed to the presence of oxygen ions, either as H{sub 2}O or Li{sub 2}O, in the (2 x 2) channels; lithia-stabilized electrodes, 0.15Li{sub 2}O {center_dot} -MnO{sub 2}, show good cycling behavior and a rechargeable capacity of approximately 180 mAh/g.

Noailles, L. D.

1998-09-02T23:59:59.000Z

313

Structural Environment of Nitrogen in N-doped Rutile TiO2(110)  

DOE Green Energy (OSTI)

We employ x-ray photoelectron spectroscopy (XPS), reflection high-energy electron diffraction (RHEED) and nuclear reaction analysis (NRA) to characterize the concentration-dependent structural properties of nitrogen doping into rutile TiO2. High quality N-doped TiO2 were prepared on rutile single crystal TiO2(110) substrates using plasma-assisted molecular beam epitaxy with an electron cyclotron resonance (ECR) plasma and Ti effusive sources. Films with N dopant concentrations at or below 2 at.% exhibited predominately substitutional doping based on NRA data, whereas films with concentrations above this limit resulted in little or no substitutional N and surfaces rich in Ti3+. The binding energy of the N 1s feature in XPS did not readily distinguish between these two extremes in N-doping, rendering features within 0.4 eV of each other and similar peak profiles. Although widely used to characterize the state of N in anion-doped TiO2 materials, we find that XPS is unsuitable for this task.

Henderson, Michael A.; Shutthanandan, V.; Ohsawa, Takeo; Chambers, Scott A.

2010-12-31T23:59:59.000Z

314

Enhancement of solar photocatalytic detoxification by adsorption of porphyrins onto TiO sub 2  

DOE Green Energy (OSTI)

Titanium dioxide (TiO{sub 2}) is a photocatalyst for solar detoxification of water containing organic contaminants such as solvents, PCB's, dioxins, pesticides, and dyes. Unfortunately, the ultraviolet (UV) energy used by TiO{sub 2} ({lambda}<400 nm) only comprises about 4% of the solar spectrum. One way of enhancing the efficiency of solar detoxification technologies is to utilize a larger portion of the solar spectrum to initiate the Tio{sub 2}- catalyzed detoxification chemistry. Metalloporphyrins strongly absorb visible and near infrared radiation. By utilization of a process called photosensitization, adsorption of these dyes onto TiO{sub 2} can enable a much broader portion of the solar spectrum to be used. Photosensitization relies upon the ability of the dye molecule to absorb more of the solar energy than bare TiO{sub 2} and to interact electronically with the TiO{sub 2} surface in such a way as to initiate TiO{sub 2}-based redox photochemistry using the dye-absorbed energy. 16 refs., 7 figs.

Majumder, S.A.; Ondrias, M.R. (New Mexico Univ., Albuquerque, NM (United States). Dept. of Chemistry); Prairie, M.R. (Sandia National Labs., Albuquerque, NM (United States)); Shelnutt, J.A. (New Mexico Univ., Albuquerque, NM (United States). Dept. of Chemistry Sandia National Labs., Albuquerque, NM (United States))

1991-01-01T23:59:59.000Z

315

Aspects of nitrogen surface chemistry relevant to TiN chemical vapor deposition  

Science Conference Proceedings (OSTI)

NH{sub 3} is an important component of many chemical vapor deposition (CVD) processes for TiN films, which are used for diffusion barriers and other applications in microelectronic circuits. In this study, the interaction of NH{sub 3} with TiN surfaces is examined with temperature programmed desorption (TPD) and Auger electron spectroscopy. NH{sub 3} has two adsorption states on TiN: a chemisorbed state and a multilayer state. A new method for analyzing TPD spectra in systems with slow pumping speeds yields activation energies for desorption for the two states of 24 kcal/mol and 7.3 kcal/mol, respectively. The sticking probability into the chemisorption state is {approximately}0.06. These results are discussed in the context of TiN CVD. In addition, the high temperature stability of TiN is investigated. TiN decomposes to its elements only after heating to 1300 K, showing that decomposition is unlikely to occur under CVD conditions.

Schulberg, M.T.; Allendorf, M.D.; Outka, D.A.

1996-08-01T23:59:59.000Z

316

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Porcar,K.Hong, P. NIST effect of partially Falus, X.Li deuterated dendrimer Oct 14 2 A Norman+ H King Flooded Pores Kline (ExxonMobil) EXM Oct ...

317

Instrument - NG7 SANS - Small Angle Neutron Scattering  

Science Conference Proceedings (OSTI)

... Jointly developed and sponsored by the NCNR, the ExxonMobil Research and Engineering Co., and the University of Minnesota, the instrument ...

2012-09-17T23:59:59.000Z

318

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... D. Ho, R. NIST of poly(ethylene oxide) Briber in Ethanol Jun 1 1 A Norman+ H King To be announced 10CB Butler (ExxonMobil) EXM Jun 2 3 H ...

319

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... D Stalla 18504 Direct Measurement of CCR, (Oak Ridge) S30-01 Hydrogen Densities in a Promising Oct 14 2 A Eberle (ExxonMobil) EXM Oct 16 2 ...

320

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... cell ToR-SANS SE Liu K. Gurney NIST commissioning tests Sep 10 4 A Eberle+H King 17634 Shale rock porosity NPC Liu (ExxonMobil) EXX Sep ...

Note: This page contains sample records for the topic "ti ng ph" from the National Library of EnergyBeta (NLEBeta).
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321

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Poly(acrylic acid) in 10CB Hammouda various solvents Jun 15 3 M. Diwekar +J. Shi 4602 Small Angle Neutron DI Kline (U. Utah) Scattering (SANS ...

322

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Lund U) the formation of Jun 1 2 Facility Shutdown Facility Shutdown Jun 3 2 J Trewhella (U 6860 Structural 10CB Hammouda Utah)+ D. Langley+ ...

323

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Decomposition in a Rubber Blend Jan 28 6 M Rabeony + R Polyolefin and 7H,1 Lin Garner + D Lohse + Polyelastomer Blends M Lin (Exxon) Feb 3 ...

324

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Surfactant Stabilized 9P Barker Stuttgart) + J Nanocrystalline Barker Palladium May 13 3 J Huang + J Li Polyelectrolytes 9P Lin (Exxon) May 16 3 S ...

325

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... 25 2 L Magid (U. Tenn.) 249 Rifamycin Aggregation 10CB Butler + D Armstrong (U. S8-06 Missouri) + P Mar 27 3 R Garner (Exxon) Polyolefin Star ...

326

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Maryland) S29-05 Receptor Recognition by PolyUbiquitin Apr 25 1 C Lopez-Barron 18394 Proprietary Research 10CB Liu (Exxon Mobil) EXM Apr ...

327

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Choy + Microemulsion 10CB Butler C Liao (MIT) Microstructure Jul 11 3 M Rabeony + R 857 Polyolefin Blend 7H Lin Garner (Exxon) Miscibility Jul ...

328

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Star Polymers Jun 14 3 L Anovitz (Oak 17954 Multiscale Porosity in 9P Mildner Ridge)+D Cole+ A S29-49 the Eagle Ford Gas Shale Swift (Ohio ...

329

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Oct 20 2 Reactor Shutdown Oct 22 3 T. Mason + E. 1596 Asphaltene Aggregation in 10CB Lin Sirota + M. Lin Crude Oil Oct 25 1 D. Peiffer + M ...

330

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... nanoparticle aggregation in mixtures of incompatible crude oils, TG Mason ... nanoparticle aggregation kinetics in incompatible crude oil mixtures, TG ...

331

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... U) S26-93 Sulfonated Triblock Copolymers Aug 2 2 Y. Liu, R. Tao, E. 16172 studying the structure 10CB Liu Du NIST change of crude oil with high ...

332

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... May 29 3 S. Shin, B. 14414 Salt effect on clustering 10CB Hammouda Hammouda, D. Ho, R. NIST of poly(ethylene oxide) Briber in Ethanol Jun 1 ...

333

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... R. 2297 Polymer Thin Film Phase 7H Schulz Jones + S. Kumar Behavior Nov 18 1 D. Ho 2209 Organoclays Dispersed in 10CB Ho Ethanol Nov 19 ...

334

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Butler Christen (Oak S17-85 "Irreversibility" and Ridge)+ D. Paul (U. "Peak Effect" in May ... of Novel Jun 3 3 B. Chapman, D. 5985 PP/oil Blends 7HB ...

335

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... D. 4115 "Irreversibility" and SCM9 Porcar Christen, D. Paul S15-66 "Peak Effect" in ... Magnetic Media Feb 29 1 M. Lin 4753 Lube Oil Detergent 10CB ...

336

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... 10CB Krzywon/Butler NIST Oct 23 1 M. Wasbrough 18174 Nanoporosity in Rocks 10CB Wasbrough NIST from the Coso Geothermal Field Oct 24 1 ...

337

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... interactions, AP Eberle, RC Priego, JM Kim, NJ Wagner, Langmuir, ... Morphologies in PCPDTBT/PCBM Bulk-Heterojunction Solar Cells, Y ... Energy ...

338

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Modifiers under Shear Jul 23 1 M. Lin 3292 Clay Dispersions in 9P Lin Organic Solvents Jul 24 1 Power outage - source down Jul 25 1 M. Lin 3292 ...

339

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... blends Jan 31 2 S. Krueger, Z. 5581 SANS Contrast Variation 10CB Krueger Kelman, K. Rubinson NIST Studies of DNA Helicase Complexes with ...

340

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Rhe Porcar NIST oscillatory shear Nov 13 2 S. Krueger, Z. 7441 SANS Studies of DNA 9P Krueger Kelman, K, Rubinson NIST Helicase and Its ...

Note: This page contains sample records for the topic "ti ng ph" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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341

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... 7HB Jackson Adams, D. Steytler EXX Sep 18 2 S. Krueger, Z. 7370 SANS Studies of DNA 9P Krueger Kelman, K. Rubinson NIST Helicase and Its ...

342

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Acid in a Jan 23 2 Z. Kelman, K. 5783 SANS Contrast Variation 10CB Krueger Rubinson, S. S18-30 Studies of DNA Helicase Krueger Complexes ...

343

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Scattering Studies on Blends of Poly Jul 21 1 S. Krueger, Z. 6965 SANS Studies of DNA 10CB Krueger Kelman, K. Rubinson NIST Helicase and Its ...

344

NIST CNR SANS NG3 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... Nogues, Proc. MMM-Intermag Conf. 113, 17, 17B531, 2013. 4, ... Furdyna, Proc. MMM-Intermag Conf. 113, 17, 17B520, 2013. 10, ...

345

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... MD Baro, J. Sort, J. Nogues, Proc. MMM-Intermag Conf. 113, 17, 17B531, 2013. 4, Deep Hydration: Poly(ethylene glycol) Mw ...

346

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... 52, Viscosity of Biomass Pyrolysis Oils from Various Feedstocks, MW Nolte, MW Liberatore, Energy & Fuels, 24, 12, 6601, 2010. ...

347

NIST CNR SANS NG3 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... 31, Neutron transmission of single-crystal magnesium fluoride, JG Barker, DF Mildner, JA Rodriguez, P. Thiyagarajan, J Appl. Cryst. 41, 6, 1003, 2008 ...

348

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... 24, Neutron transmission of single-crystal magnesium fluoride, JG Barker, DF Mildner, JA Rodriguez, P. Thiyagarajan, J Appl. Cryst. 41, 6, 1003, 2008 ...

349

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Blends M. Gauthier Nov 20 3 J. Huang + J. Sung Polyelectrolyte Block 10CB Lin + J. Li Copolymers Nov 23 2 A. Allen + R. Effects of Fly Ash on 9P ...

350

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Calibration 10CB Dec 3 1 X Gu+ S Brantley 18812 Effects of tree throw on 10CB (Penn State U) S30-73 porosity evolution during shale Dec 4 2 B ...

351

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... 5 1 L. Jin, S. 9388 Evolution of Porosity 10CB Jackson/Mildne Brantley, G. NIST During Incipient Rother, G. Lynn, D. Weathering of Shale and Jun 6 ...

352

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Amherst) Transition (DOT) in Nov 19 1 M Bhatt+ L Jin+ S 14740 Porosity Development in SE Mildner Brantley (Penn S25-69 Granite and Diabase ...

353

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... B. Tang, T. Koga, MH Rafailovich, JC Sokolov, DG Peiffer, Z. Li, AJ Dias, KO McElrath, MY Lin, SK Satija, SG Urquhart, H. Ade, D. Nguyen, Macromol ...

354

NIST CNR SANS NG3 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... Microstructure and Morphology of Amine-Cured Epoxy Coatings Before and After Outdoor Exposures - An AFM Study, X. Gu, T. Nguyen, M. Oudina ...

355

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... 7, Characterization of the CO2 fluid adsorption in coal as a function of pressure using neutron scattering techniques (SANS and USANS), YB ...

356

NIST CNR SANS NG3 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... 3, Characterization of Fly Ash Reactivity in Hydrating Cement by Neutron Scattering, W. Bumrongjaroen, RA Livingston, DA Neumann, AJ Allen, J ...

357

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Jul 1 3 J. Schulz 2765 Multilamella Vesicles: BSC Schulz Temperature and Shear Dependence Jul 4 2 A. Allen + W. 2760 Effects of Fly Ash on 9P ...

358

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... SP10-08 Conformation in Thin Films Apr 16 2 A. Allen + W. 2629 Role of Glassy Phase in 9P Lin Bumrongjaroen + R. Fly Ash-Treated Cement ...

359

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Muzny + H. Fire Retardant 10CB Butler Hanley + J. Gilman Polymer/Clay Nanocomposites Aug 26 2 A. Allen + R. Aging Effects on Fly Ash 9P Kline ...

360

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Nov 30 2 Reactor Shutdown Dec 2 2 D. Lohse + M. 2230 Polyolefin Polymer Blends 7H Lin Xenidou Dec 4 1 A. Allen 2242 Effects of Fly Ash on 9P ...

Note: This page contains sample records for the topic "ti ng ph" 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

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Dec 14 1 S.-M. Choi + J. Instrument Testing 9P Choi Schulz Dec 15 1 A. Allen + W. 2242 Effects of Fly Ash on 9P Schulz Bumrongjarven Cement ...

362

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... C. Magnetic Cluster Sizes in HM1 Glinka/Choi Glinka S9-34 Thin Film Magnetic Recording Disks Jan 14 2 A. Allen + R. Effects of Fly Ash on 9P ...

363

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... POSS polymer May 11 2 B. Hammouda, M. 18432 Solvation of Hydrophillic 10CB Hammouda Hore NIST Polymer May 13 2 T Xu+JC Ang+P 17988 ...

364

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... 10CB Slawecki Joachimiak S7-16 (Argonne) Jun 19 4 Zhao + Trewhella + cAMP-dependent protein 10CB Krueger Walsh (LANL) SC7-17 kinase ...

365

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Facility Shutdown ----- Jan 2 1 Instrument Plexiglass Calibration 7H Hammouda Scientists Jan 3 3 Mang + Hjelm (LANL) CsPFO Liq. ...

366

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... and 9P Butler Greenberg (U. SC9-14 Linear Chains Akron) Jul 21 1 J. Trewhella + S. 805 Neutron Scattering 10CB Kline Gallagher (LANL) SC9-01 ...

367

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Pressure Aug 4 3 Krishnamoorti (U. Crystalline Polymers NPC Hammouda Houston) + Hammouda (NIST) Aug 7 2 Hjelm + Mang (LANL) Bile Salt ...

368

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Carnegie S15-49 Peptide Nucleic Acid Mellon U) (PNA) Mixed Micelles for Sep 24 2 B. Hammouda+D. Ho 2304 PEO/benzene solutions 10CB ...

369

MaNufactuRiNG DeMONstRatiON  

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

new markets. Utilizing Neutron Science for Industry Reconstructed images of a turbine blade using neutron tomography complementary Manufacturing Research World-Leading Research...

370

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... the conformational 10CB Porcar R Chen (Oak Ridge)+ S21-39 ... and Micro-phase SE Kline Nat Lab) S21-28 ... on the SE Kline (Seoul National U)+ S21 ...

371

STAFF REPORT ENGINEERlNG SERVICES DEP.\\RTMENT  

E-Print Network (OSTI)

, landfill gas and biomass. #12;CITY COUNCIL STAFF REPORT DECEMBER 21,2011 PAGE 2 Council Subcommittee

372

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... oxide) in Maryland)+ D Ho Water/ethanol mixtures Nov 7 3 J ... N. 13598 UD Scattering Class Lab 10CB Butler ... C Nov 18 1 SANS Staff (12 Feasibility ...

373

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... of critical 7HB Ho (U. Mass-Amherst) SC13-06 electric field in ... Tech.)+J. Zn.05Co.95Fe2O4/ZnFe2O4 Borchers (NCNR) Core/Shell Structure Nov 7 ...

374

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Biased SCM9 Laver Inderheed S20-39 Co-CoO Core Shell (Brookhaven Nat Nanoparticles Apr 13 1 B. Ueland+ J Lynn 7598 Electric-Field Effects ...

375

NIST CNR SANS NG3 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... 8, Core-Shell Magnetic Morphology of Structurally Uniform Magnetite Nanoparticles, ... 26, Origin of Electric-Field-Induced Magnetization in Multiferroic ...

376

NIST CNR SANS NG3 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... of Silica Nanoparticles in Basic Solutions of ... 42, Thermodynamic Interactions in Blends of Poly ... 43, Thermodynamics of Polymer Blends Organized by ...

377

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Jan 9 2 G Cheng+ F Hua+ Y 9262 Conformation of 10CB Hammouda Melnichenko (Oak S22-18 amphiphilic comb like Ridge) polymers in different ...

378

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... 1 D Cole+ G Rother+ M 13918 Investigation of Porosity SE Jackson Brady+ J Keiser S24-64 Generation during Metal (Oak Ridge) Oxidation using ...

379

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Phase Behavior Maryland)+ S Pai and Proteins May 8 3 Y Melnichenko+ G 13657 Exploring the structure SE Jackson Cheng (Oak Ridge)+ S24-05 ...

380

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Jul 11 1 D Cole (Ohio 17127 Characterization of 10CB Mildner State)+G Rother S28-14 Nanoporosity in Rocks (Oak Ridge) from Subsurface Jul 12 ...

Note: This page contains sample records for the topic "ti ng ph" 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

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... Instr. 73, 6, 2345, 2002. 2, Chain conformation in ultrathin polymer films, RL Jones, CL Soles, FW Starr, Proc. SPIE, 4690, 342, 2002. ... SPIE, 4689, 541 ...

382

Mann LED Elevator Ligh ng: ECI Savings Table Cost (billed)  

E-Print Network (OSTI)

Cost (billed) Annual Savings $ Equivalent # Homes Electric 63 12 51 81% 1,300 200 1,000 2 tons/per year car bon equivalent annually. Benefits: The new lamps are much cooler, lower energy usage, and will last up to 5 years versus the old lamps that re quired changing many mes per year

Lipson, Michal

383

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... S. 3160 Structure of Ion- 9P Kline Young Substituted Nafion Mar 20 2 T. Mason 3208 Crude Oil in Mixed 10CB Lin Solvents Mar 22 3 D. Ho + M ...

384

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Blends 7H Butler Ramzi (DSM) Dec 2 4 E. Sheu + J. Hsu Pressure Response of SE Hammouda (Texaco) Erskine Crude Oil Dec 6 2 A. Claye + J ...

385

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... White + M. Copolyesters and Lin Surfactant Mixtures Aug 1 3 T. Mason 2827 Crude Oil in Mixed 10CB Lin Solvents Aug 4 3 G. Schmidt 2834 ...

386

NCNR NG3-SANS Instrument Schedule B. Hammouda Tel ...  

Science Conference Proceedings (OSTI)

... Frechet (UC- and Nonpolar Solvents Jan 12 2 T. Williams + J. 1015 Pressure Response of SE Hammouda Hsu (Texaco) Erskine Crude Oil Jan 14 ...

387

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... May 9 2 B. Chapman 2725 Polyolefin Blends 7H Lin May 11 3 T. Mason + Z. Cheng 2706 Crude Oil Mixtures 10CB Lin + B. Silbernagel May 14 3 J ...

388

NIST CNR SANS NG7 30 Meter SANS Instrument  

Science Conference Proceedings (OSTI)

... 7, Characterization of deep weathering and nanoporosity development in shale ... Dissociation in Polymer/Fullerene Bulk Heterojunction Solar Cells, W ...

389

NCNR NG7-SANS Instrument Schedule P. Butler Tel: (301) ...  

Science Conference Proceedings (OSTI)

... Jin+ S Brantley 13812 Geometry and Connectivity SE Mildner (Penn State U)+ G S24-39 of Pores within Black Rother+ D Cole (Oak Shales: Mar 10 ...

390

Medication Safety in Older Adults: Home-Based Practice Patterns Joshua P. Metlay, MD, PhD,wzz  

E-Print Network (OSTI)

Medication Safety in Older Adults: Home-Based Practice Patterns Joshua P. Metlay, MD, Ph-reported sources of in- formation on current medications as well as home-based practices for organizing medication

Hennessy, Sean

391

Study of surface fluorination of photocatalytic TiO{sub 2} by thermal shock method  

Science Conference Proceedings (OSTI)

Surface fluorinated TiO{sub 2} powders were prepared by thermal shock method and an overall comparative study was achieved on the basis of XRD, SEM, UV-vis and XPS analyses. The main objective was to elucidate the influences of surface fluorination on the crystallite structures, morphologies, optical properties and surface chemistry with the temperature. According to the results, the surface fluorination under thermal shock method below 600 Degree-Sign C did not change the crystallite structure and the particles size, but successfully created chemisorbed fluoride ions, oxygen vacancies and increased the hydroxyl groups on the surface of TiO{sub 2}. The presence of oxygen vacancies was assigned to the red shift of TiO{sub 2} optical absorption edge, which was the origin of visible-light-induced photocatalytic activity of these samples. For the thermal shock temperatures over 600 Degree-Sign C, the K{sub 2}Ti{sub 6}O{sub 13}-like phase was formed, resulting from the decrease of surface hydroxyl groups and the blue shift in absorption edge which reduced the photocatalytic activity. - Graphical abstract: The influence of fluorination on the surface of TiO{sub 2} by thermal shock method at several temperatures has been investigated by following the evolution of the F1s spectra obtained by X-ray photoelectron spectroscopy. The blank peaks are assigned to the chemisorbed fluoride ions on the samples surface and the filled peaks to fluorine atoms in oxygenated environment of solid solution TiO{sub 2-x}F{sub x}, which is originated from the substitution of F ions for O ions in the TiO{sub 2} lattice. Highlights: Black-Right-Pointing-Pointer Surface fluorination of TiO{sub 2} P25 by thermal shock method. Black-Right-Pointing-Pointer Structure, morphology, surface and photocatalytic properties of fluorinated TiO{sub 2}. Black-Right-Pointing-Pointer Low thermal shock temperatures increase the photocatalytic activity. Black-Right-Pointing-Pointer Fluoride ions chemisorbed on the surface without structure and morphology change. Black-Right-Pointing-Pointer Formation of K{sub 2}Ti{sub 6}O{sub 13} phase at high thermal shock temperatures.

Tien Khoa Le [IPREM/ECP (UMR 5254), University of Pau, Helioparc, 2 av. Pierre Angot, 64053 Pau cedex 9 (France); University of Science - Ho Chi Minh city, 227 Nguyen Van Cu Street, Ho Chi Minh City (Viet Nam); Flahaut, Delphine, E-mail: delphine.flahaut@univ-pau.fr [IPREM/ECP (UMR 5254), University of Pau, Helioparc, 2 av. Pierre Angot, 64053 Pau cedex 9 (France); Foix, Dominique; Blanc, Sylvie [IPREM/ECP (UMR 5254), University of Pau, Helioparc, 2 av. Pierre Angot, 64053 Pau cedex 9 (France); Huu Khanh Hung Nguyen; Thi Kieu Xuan Huynh [University of Science - Ho Chi Minh city, 227 Nguyen Van Cu Street, Ho Chi Minh City (Viet Nam); Martinez, Herve [IPREM/ECP (UMR 5254), University of Pau, Helioparc, 2 av. Pierre Angot, 64053 Pau cedex 9 (France)

2012-03-15T23:59:59.000Z

392

Die beeld van NG Welsyn onder NG lidmate in die sinodale gebied Wes-Transvaal / E. M. Kloppers.  

E-Print Network (OSTI)

??Every organization has a corporate image (beyond its control) which is mainly formed by its corporate identity (which it can control). This means that organizations… (more)

Kloppers, Elizabeth Maria

2005-01-01T23:59:59.000Z

393

SpRiNg 2008 COLUMNSChEMiCAL AND BiOMOLECuLAr ENgiNEEriNg  

E-Print Network (OSTI)

Jiao Tong University in China. #12;COLUMNS spring 2008 4 facultyNEWS SENgErS TOurS EurOPE AS iAsses the stAtor. the stAtor slot flow field ContAins An outwArdly direCted disChArge Jet thAt forms when settings, and prepare them to teach. The team has also developed a one-day workshop for new science

Shapiro, Benjamin

394

Structure of epitaxial (Fe,N) codoped rutile TiO2 thin films by x-ray absorption  

Science Conference Proceedings (OSTI)

Homoepitaxial thin films of Fe:TiO2 and (Fe,N):TiO2 were deposited on rutile(110) by molecular beam epitaxy. X-ray absorption near edge spectroscopy (XANES) spectra were collected at the Ti L-edge, Fe L-edge, O K-edge, N K-edge, and Ti K-edge. No evidence of structural disorder associated with a high concentration of oxygen vacancies is observed. Substitution of Fe for Ti could not be confirmed, although secondary phase Fe2O3 and metallic Fe can be ruled out. The similarity of the N K-edge spectra to O, and the presence of a strong x-ray linear dichroism (XLD) signal for the N K-edge, indicates that N is substitutional for O in the rutile lattice, and is not present as a secondary phase such as TiN. Simulations of the XANES spectra qualitatively confirm substitution, although N appears to be present in more than one local environment. Neither Fe:TiO2 nor (Fe,N):TiO2 exhibit intrinsic room temperature ferromagnetism, despite the presence of mixed valence Fe(II)/Fe(III) in the reduced (Fe,N):TiO2 film.

Kaspar, Tiffany C.; Ney, A.; Mangham, Andrew N.; Heald, Steve M.; Joly, Yves; Ney, V.; Wilhelm, F.; Rogalev, A.; Yakou, Flora; Chambers, Scott A.

2012-07-23T23:59:59.000Z

395

Visible Light Absorption of Binuclear TiOCoII Charge-Transfer UnitAssembled in Mesoporous Silica  

SciTech Connect

Grafting of CoII(NCCH3)2Cl2 onto mesoporous Ti-MCM-41 silicain acetonitrile solution affords binuclear Ti-O-CoII sites on the poresurface under complete replacement of the precursor ligands byinteractions with anchored Ti centers and the silica surface. The CoIIligand field spectrum signals that the Co centers are anchored on thepore surface in tetrahedral coordination. FT-infrared action spectroscopyusing ammonia gas adsorption reveals Co-O-Si bond modes at 831 and 762cm-1. No Co oxide clusters are observed in the as-synthesized material.The bimetallic moieties feature an absorption extending from the UV intothe visible to about 600 nm which is attributed to the TiIV-O-CoII?3TiIII-O-CoIII metal-to-metal charge-transfer (MMCT) transition. Thechromophore is absent in MCM-41 containing Ti and Co centers isolatedfrom each other; this material was synthesized by grafting CoII onto aTi-MCM-41 sample with the Ti centers protected by a cyclopentadienylligand. The result indicates that the appearance of the charge-transferabsorption requires that the metal centers are linked by an oxo bridge,which is additionally supported by XANES spectroscopy. The MMCTchromophore of Ti-O-CoII units has sufficient oxidation power to serve asvisible light electron pump for driving multi-electron transfer catalystsof demanding uphill reactions such as water oxidation.

Han, Hongxian; Frei, Heinz

2007-01-30T23:59:59.000Z

396

arXiv:hep-ph/0110320 v3 18 Sep 2002  

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

4 4 November 2001 Detecting and Studying Higgs Bosons in Two-Photon Collisions at a Linear Collider David M. Asner, Jeffery B. Gronberg, Lawrence Livermore National Laboratory Livermore, California John F. Gunion University of California at Davis Davis, California November 2001 Abstract: We examine the potential for detecting and studying Higgs bosons in two-photon collisions at a future linear collider. Our study incorporates realistic two-photon spectra based on the most probable available laser technology. Results include detector simulations. We study the cases of: a) an SM-like Higgs boson; b) the heavy MSSM Higgs bosons; c) a Higgs boson with no WW/ZZ couplings from a general two Higgs doublet model. arXiv:hep-ph/0110320 v3 18 Sep 2002

397

Oral Histories: Dr. John W. Gofman, M.D., Ph.D.  

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

7 7 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Dr. John W. Gofman, M.D., Ph.D. Conducted December 20, 1994 United States Department of Energy Office of Human Radiation Experiments June 1995 CONTENTS Foreword Short Biography Oberlin College, Enrollment in Western Reserve Medical School To University of California, Berkeley to Study Physical Chemistry Assisting Seaborg's Research, Discovery of Uranium-233 The Manhattan Project From Research to Laboratory Production of Plutonium Joe Hamilton's Cavalier Approach to Radiation Medical Treatments With Radioactive Phosphorus (32P) Conflict Between University of California San Francisco and Berkeley Reflections on Ernest Lawrence Heart Disease Studies AEC Support for Heart Disease Studies Heparin and Lipoprotein Research With Human Subjects

398

Oral Histories: Oral History of Radiologist Henry I. Kohn, M.D., Ph.D.  

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

1 1 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Radiologist Henry I. Kohn, M.D., Ph.D. Conducted September 13, 1994 United States Department of Energy Office of Human Radiation Experiments June 1995 CONTENTS Foreword Short Biography Studying the Effects of X Rays on Animal Blood Chemistry at Oak Ridge Work at UCSF's Radiological Laboratory Advantages of Yeast Cells for Studying Radiation Effects Reflections on Bert Low-Beer and Joseph Hamilton Radiation Genetics Experiments on Mice Reflections on Reynold Brown and Henry Kaplan Establishment of Harvard's Joint Center for Radiation Therapy (Mid '60s) Radiological Assessment for the National Academy of Science Survey of Nuclear and Alternative Energy (1975–79) Biologist and Physicist Perspectives on Radiological Effects

399

Development of a high temperature pH electrode for geothermal fluids. Final report, Task 1  

DOE Green Energy (OSTI)

There has been no serious application of pH measurements above 150/sup 0/C stemming from the fact that there have been no practical probes available that are capable of operation under the required conditions of temperature and pressure. Recently, a new approach to such measurements was developed in which an oxygen ion conducting ceramic membrane (e.g., stabilized zirconia) is being employed in a sensor somewhat analogous to the glass electrode. The new sensor retains the specificity of the glass electrode, is equally insensitive to interference from redox active species, and possesses markedly superior resistance to attack by aqueous media at high temperatures. The status of the new sense at the inception of the contract is summarized and plans for the first year's investigation are outlined.

Niedrach, L.W.; Stoddard, W.H.

1981-04-01T23:59:59.000Z

400

Metallic glass alloys of Zr, Ti, Cu and Ni  

DOE Patents (OSTI)

At least quaternary alloys form metallic glass upon cooling below the glass transition temperature at a rate less than 10.sup.3 K/s. Such alloys comprise titanium from 19 to 41 atomic percent, an early transition metal (ETM) from 4 to 21 atomic percent and copper plus a late transition metal (LTM) from 49 to 64 atomic percent. The ETM comprises zirconium and/or hafnium. The LTM comprises cobalt and/or nickel. The composition is further constrained such that the product of the copper plus LTM times the atomic proportion of LTM relative to the copper is from 2 to 14. The atomic percentage of ETM is less than 10 when the atomic percentage of titanium is as high as 41, and may be as large as 21 when the atomic percentage of titanium is as low as 24. Furthermore, when the total of copper and LTM are low, the amount of LTM present must be further limited. Another group of glass forming alloys has the formula (ETM.sub.1-x Ti.sub.x).sub.a Cu.sub.b (Ni.sub.1-y Co.sub.y).sub.c wherein x is from 0.1 to 0.3, y.cndot.c is from 0 to 18, a is from 47 to 67, b is from 8 to 42, and c is from 4 to 37. This definition of the alloys has additional constraints on the range of copper content, b.

Lin, Xianghong (Pasadena, CA); Peker, Atakan (Pasadena, CA); Johnson, William L. (Pasadena, CA)

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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.


401

Preparation and extrusion of multifilamentary NbTi conductor billets  

SciTech Connect

In a cooperative program with industrial superconducting wire manufacturers for the purpose of studying billet preparation and extrusion, a total of twenty billets were assembled. Fourteen of these contained no superconductor but were ''dummy'' billets to evaluate methods of stacking to achieve the best packing density. These billets were not extruded but were sectioned transversely and longitudinally for evaluation of billet preparation techniques. The remaining six billets were assembled with NbTi stacking elements in a copper/copper nickel matrix using a standard conductor configuration. Two of these billets were instrumented with thermocouples and used to evaluate preheating techniques. The other four were extruded and drawn to finished conductor size for critical current measurement. This study showed that hexagonal stacking elements, contoured billet jackets and hot isostatic pressing resulted in high density uniform billets for extrusion. Rotary forging was found to be unacceptable for billet compacting. Fast billet heating was achieved in both the salt bath and by induction heating, but the induction method gave a more uniform temperature distribution during the heating cycle. Asymmetry from poor packing density in the billet resulted in nonuniform filament size distributions and poor critical current performance. Billet yield was increased as much as 16 percent by contouring the stacking element positions within the billet. (auth)

Fietz, W.A.; McDonald, R.E.; Miller, J.R.

1975-01-01T23:59:59.000Z

402

Chemistry of NOx on TiO2 surfaces studied by ambient pressure XPS:  

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

Chemistry of NOx on TiO2 surfaces studied by ambient pressure XPS: Chemistry of NOx on TiO2 surfaces studied by ambient pressure XPS: products, effect of UV irradiation, water and coadsorbed K+ Title Chemistry of NOx on TiO2 surfaces studied by ambient pressure XPS: products, effect of UV irradiation, water and coadsorbed K+ Publication Type Journal Article Year of Publication 2013 Authors Rosseler, Olivier, Mohamad Sleiman, Nahuel V. Montesinos, Andrey Shavorskiy, Valerie Keller, Nicolas Keller, Marta I. Litter, Hendrik Bluhm, Miquel Salmeron, and Hugo Destaillats Journal J. Phys. Chem. Lett. Volume 4 Start Page 536 Issue 3 Pagination 536-541 Date Published 01/2013 Abstract Self-cleaning surfaces containing TiO2 nanoparticles have been postulated to efficiently remove NOx from the atmosphere. However, UV irradiation of NOx adsorbed on TiO2 also was shown to form harmful gas-phase byproducts such as HONO and N2O that may limit their depolluting potential. Ambient pressure XPS was used to study surface and gas-phase species formed during adsorption of NO2 on TiO2 and subsequent UV irradiation at λ = 365 nm. It is shown here that NO3-, adsorbed on TiO2 as a byproduct of NO2 disproportionation, was quantitatively converted to surface NO2 and other reduced nitrogenated species under UV irradiation in the absence of moisture. When water vapor was present, a faster NO3- conversion occurred, leading to a net loss of surface-bound nitrogenated species. Strongly adsorbed NO3- in the vicinity of coadsorbed K+ cations was stable under UV light, leading to an efficient capture of nitrogenated compounds.

403

Natrix -Scoring Sheet 1. 0.01 M Mg Chloride, 0.05 M MES pH 5.6, 2.0 M Lithium Sulfate  

E-Print Network (OSTI)

Natrix - Scoring Sheet 1. 0.01 M Mg Chloride, 0.05 M MES pH 5.6, 2.0 M Lithium Sulfate 2. 0.01 M Mg Cacodylate pH 6.0, 1.0 M Lithium Sulfate 12. 0.01 M Mg Sulfate, 0.05 M Na Cacodylate pH 6.0, 1.8 M Lithium pH 6.5, 1.3 M Lithium Sulfate 19. 0.01 M Mg Sulfate, 0.05 M Na Cacodylate pH 6.5, 2.0 M Ammonium

Hill, Chris

404

Controlling the pH of acid cheese whey in a two-stage anaerobic digester with sodium hydroxide  

Science Conference Proceedings (OSTI)

Anaerobic digestion of cheese whey offers a two-fold benefit: pollution potential reduction and biogas production. The biogas, as an energy source, could be used to reduce the consumption of traditional fuels in the cheese plant. However, as a result of little or no buffering capacity of whey, the pH of the anaerobic digester drops drastically and the process is inhibited. In this study, the effect of controlling the pH of the second chamber of a two-stage, 150 L anaerobic digester operating on cheese whey on the quality and quantity of biogas and the pollution potential reduction, was investigated using sodium hydroxide. The digester was operated at a temperature of 35 C and a hydraulic retention time of 15 days for three runs (no pH control, pH control with no reseeding, and ph control with reseeding) each lasting 50 days. The results indicated that operating the digester without pH control resulted in a low pH (3.3) which inhibited the methanogenic bacteria. The inhibition was irreversible and the digester did not recover (no methane production) when the pH was restored to 7.0 without reseeding, as the observed increased gas production was a false indication of recovery because the gas was mainly carbon dioxide. The addition of base resulted in a total alkalinity of 12,000 mg/L as CaCO{sub 3}. When the system was reseeded and the pH controlled, the total volatile acid concentration was 15,100 mg/L (as acetic acid), with acetic (28%), propionic (21%), butyric (25%), valeric (8%), and caproic (15%) acids as the major constituents. The biogas production was 62.6 L/d (0.84 m{sup 3}/m{sup 3}/d) and the methane content was 60.7%. Reductions of 27.3, 30.4 and 23.3% in the total solids, chemical oxygen demand and total kjeldahl nitrogen were obtained, respectively. The ammonium nitrogen content increased significantly (140%).

Ghaly, A.E.; Ramkumar, D.R. [Dalhousie Univ., Halifax, Nova Scotia (Canada). Biological Engineering Dept.

1999-07-01T23:59:59.000Z

405

XAFS Study of Epitaxial CoxTi1-xO?-x Anatase  

SciTech Connect

Co doped TiO?-anatase is a promising candidate for a room-temperature ferromagnetic semiconductor. XAFS measurements have been used to investigate the local Co environment and Co valence for several Co-anatase films. The samples were grown on LaAlO?(001) by oxygen plasma assisted molecular beam epitaxy and on SrTiO? by atomic oxygen assisted MBE. Co concentrations were about 5%. The measurements were made at the PNC-CAT bending magnet and undulator beamlines at the Advanced Photon Source. For the films on LaAlO?, the near edge clearly shows the presence of only Co(??), and no evidence for metallic Co, while the films on SrTiO? showed significant metallic Co. Analysis of the extended fine structure for the LaAlO? films finds that the Co substitutes for Ti with some distortion of the lattice. Both in-plane and out-of-plane Co-O bonds are expanded from the Ti-O bonds in anatase. The in-plane bonds are expanded approximately twice as much. A deficit in the oxygen coordination number suggests a correlation of oxygen vacancies with Co sites.

Heald, Steve M.; Chambers, Scott A.; Droubay, Timothy

2005-01-01T23:59:59.000Z

406

The correlation of the electrical properties with electron irradiation and constant voltage stress for MIS devices based on high-k double layer (HfTiSiO: N and HfTiO:N) dielectrics  

Science Conference Proceedings (OSTI)

This paper describes the influence of e-beam irradiation and constant voltage stress on the electrical characteristics of metal-insulator-semiconductor structures, with double layer high-k dielectric stacks containing HfTiSiO:N and HfTiO:N ultra-thin ... Keywords: Electrical properties, High-k dielectrics, Metal-insulator-semiconductor (MIS) devices

V. Mikhelashvili; P. Thangadurai; W. D. Kaplan; G. Eisenstein

2010-11-01T23:59:59.000Z

407

XRD and NMR investigation of Ti-compound formation in solution-doping of sodium aluminum hydrides: Solubility of Ti in NaAlH4 crystals grown in THF  

DOE Green Energy (OSTI)

Sodium aluminum hydrides have gained attention due to their high hydrogen weight percent (5.5% ideal) compared to interstitial hydrides, and as a model for hydrides with even higher hydrogen weight fraction. The purpose of this paper is to investigate the Ti-compounds that are formed under solution-doping techniques, such as wet doping in solvents such as tetrahydrofuran (THF). Compound formation in Ti-doped sodium aluminum hydrides is investigated using x-ray diffraction (XRD) and magic angle spinning (MAS) nuclear magnetic resonance (NMR). We present lattice parameter measurements of crushed single crystals, which were exposed to Ti during growth. Rietveld refinements indicate no lattice parameter change and thus no solubility for Ti in NaAlH{sub 4} by this method of exposure. In addition, x-ray diffraction data indicate that no Ti substitutes in NaH, the final decomposition product for the alanate. Reaction products of completely reacted (33.3 at. %-doped) samples that were solvent-mixed or mechanically milled are investigated. Formation of TiAl{sub 3} is observed in mechanically milled materials, but not solution mixed samples, where bonding to THF likely stabilizes Ti-based nano-clusters. The Ti in these clusters is activated by mechanical milling.

Majzoub, E H; Herberg, J L; Stumpf, R; Spangler, S; Maxwell, R S

2004-08-26T23:59:59.000Z

408

Electrochemical characterization of Li4Ti5O12/C anode material prepared by starch-sol-assisted rheological phase method for Li-ion battery  

Science Conference Proceedings (OSTI)

Li4Ti5O12/C composite was synthesized by starch-sol-assisted rheological phase method using inexpensive raw material starch as carbon coating precursor. The Li4Ti5O12/C powder was characterized ...

Zhenpo Wang, Guowei Xie, Lijun Gao

2012-01-01T23:59:59.000Z

409

PHOTOVOLTAIC PROPERTIES OF AU-MEROCYANINE-TiO2 SANDWICH CELLS. II. PROPERTIES OF ILLUMINATED CELLS AND EFFECTS OF DOPING WITH ELECTRON ACCEPTORS  

E-Print Network (OSTI)

the photovoltaic efficiencies of a sandwich cell made byPHOTOVOLTAIC PROPERTIES OF AU-MEROCYANINE-TiO SANDWICH CELLSPhotovoltaic Properties of Au-Merocyanine-Ti0 2 Sandwich Cells

Skotheim, T.

2010-01-01T23:59:59.000Z

410

Metallic glass alloys of Zr, Ti, Cu and Ni  

DOE Patents (OSTI)

At least quaternary alloys form metallic glass upon cooling below the glass transition temperature at a rate less than 10{sup 3} K/s. Such alloys comprise titanium from 19 to 41 atomic percent, an early transition metal (ETM) from 4 to 21 atomic percent and copper plus a late transition metal (LTM) from 49 to 64 atomic percent. The ETM comprises zirconium and/or hafnium. The LTM comprises cobalt and/or nickel. The composition is further constrained such that the product of the copper plus LTM times the atomic proportion of LTM relative to the copper is from 2 to 14. The atomic percentage of ETM is less than 10 when the atomic percentage of titanium is as high as 41, and may be as large as 21 when the atomic percentage of titanium is as low as 24. Furthermore, when the total of copper and LTM are low, the amount of LTM present must be further limited. Another group of glass forming alloys has the formula (ETM{sub 1{minus}x}Ti{sub x}){sub a} Cu{sub b} (Ni{sub 1{minus}y}Co{sub y}){sub c} wherein x is from 0.1 to 0.3, y{center_dot}c is from 0 to 18, a is from 47 to 67, b is from 8 to 42, and c is from 4 to 37. This definition of the alloys has additional constraints on the range of copper content, b. 2 figs.

Lin, X.; Peker, A.; Johnson, W.L.

1997-04-08T23:59:59.000Z

411

Effects of pH and inorganic salts on the adsorption of phenol from aqueous systems on activated decolorizing charcoal  

SciTech Connect

An experimental investigation of the effects of pH and three inorganic salts (KCl, KI, and NaCl) on the adsorption isotherms of phenol (from a dilute aqueous solution) on activated charcoal was conducted. Each salt was studied at three different concentrations, i.e., 0.1, 0.01, and 0.005 M. The effect of pH (in the pH range 3 to 11) in the presence of KI, KCl, and NaCl was also investigated. The concentration of phenol in the aqueous systems studied ranged from 10 to 200 ppm. The temperature effect was also studied, and the resulting experimental equilibrium isotherms at 30, 40, and 55{degrees}C are well represented by Freundlich, Langmuir, and Redlich-Paterson isotherms. The relevant parameters for these isotherms are presented.

Halhouli, K.A.; Darwish, N.A.; Al-Dhoon, N.M. [Jordan Univ. of Science and Technology, Irbid (Jordan)

1995-10-01T23:59:59.000Z

412

Detailed conceptual design of a high temperature glass pH electrode for geothermal applications. Final report. Task II  

DOE Green Energy (OSTI)

The performance of a pH sensor for use in hot geothermal brine was determined by laboratory tests simulating the expected conditions of use. Tests were conducted at temperatures from 21/sup 0/C to 260/sup 0/C and pressures from atmospheric to 5000 psi. Probes were constructed according to the design recommended. Deficiencies were found in the areas of seal, stem glass integrity and glass stability in hot simulated brine. Modifications of the design were made and tested, the improved versions overcoming the seal and stem glass cracking problems. A different pH glass formulation was used which improved sensor performance. Test results of the final design show that the sensor survived hot brine exposure at temperatures up to and including 200/sup 0/C, retaining its low temperature pH measuring capability. Exposure to 250/sup 0/C brine resulted in irreversible probe changes which caused sensor deterioration and failure. Comparative results are shown.

Taylor, R.M.; Phelan, D.M.

1980-09-01T23:59:59.000Z

413

Annealing effect on photovoltaic performance of CdSe quantum-dots-sensitized TiO2 nanorod solar cells  

Science Conference Proceedings (OSTI)

Large area rutile TiO2 nanorod arrays were grown on F:SnO2 (FTO) conductive glass using a hydrothermal method at low temperature. CdSe quantum dots (QDs) were deposited onto single-crystalline TiO2 nanorod arrays by a ...

Yitan Li, Lin Wei, Ruizi Zhang, Yanxue Chen, Jun Jiao

2012-01-01T23:59:59.000Z

414

First-principles study of hydrogen storage on Ti-decorated B{sub 2}C sheet  

Science Conference Proceedings (OSTI)

The hydrogen storage capacity of Ti decorated B{sub 2}C sheet has been investigated by first-principles plane-wave calculation. It is revealed that a single Ti atom adsorbed on the B{sub 2}C sheet can strongly bind up to four hydrogen molecules. The adsorption energy is in the range of -0.36--0.82 eV/H{sub 2}, which is suitable for ambient temperature hydrogen storage. Considering the fact that Ti can be loaded on both sides of B{sub 2}C sheet, corresponding gravimetric storage capacity of Ti/B{sub 2}C system was also calculated and it can reach to about 7.0 wt%, exceeding the minimum requirement of 6.0 wt% for applications. - Graphical abstract: We investigated the hydrogen storage capacity of Ti decorated B{sub 2}C sheet. The most favorable adsorption geometries for every number of hydrogen molecules on Ti/B{sub 2}C complex are given in the figure. Highlights: Black-Right-Pointing-Pointer Ti decorated B{sub 2}C sheet serve as hydrogen storage medium. Black-Right-Pointing-Pointer A single Ti atom adsorbed on the B{sub 2}C sheet can strongly bind up to four hydrogen molecules. Black-Right-Pointing-Pointer The adsorption energy is in moderate range of -0.36--0.82 eV/H{sub 2}.

Guo, Y.H.; Xu, B.; Xia, Y.D.; Yin, J. [Department of Materials Science and Engineering and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China); Liu, Z.G., E-mail: liuzg@nju.edu.cn [Department of Materials Science and Engineering and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China)

2012-06-15T23:59:59.000Z

415

Investigation of the Ti/MgCl{sub 2} interface on a Si(111) 7 x 7 substrate  

Science Conference Proceedings (OSTI)

Photoelectron spectroscopy with synchrotron radiation, low energy electron diffraction, and ion-scattering spectroscopy were used in order to study the Ti/MgCl{sub 2} interface grown on an atomically clean Si(111) 7 x 7 substrate. A series of high resolution spectra after deposition of a thick MgCl{sub 2} layer, step by step deposition of Ti and gradual annealing, indicated a very reactive interface even at room temperature. Strong interaction between the incoming Ti atoms and the MgCl{sub 2} layer, leads to the formation of Ti{sup 2+} and Ti{sup 4+} oxidation states. The interfacial interaction continues even at multilayer Ti coverage mainly by the partial disruption of Mg-Cl bonds and the formation of Ti-Cl sites, rendering this interface a very promising UHV-compatible model of a pre-catalyst for olefin polymerization. After the final annealing, the MgCl{sub 2} multilayers desorb while Ti remains on the surface forming a silicide layer on which Cl and Mg atoms are attached.

Karakalos, S.; Siokou, A. [FORTH/ICE-HT, P.O. Box 1414, GR-26504 Rion, Patras (Greece); Skala, T.; Matolin, V. [Charles University, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, V Holesovickach 2, 18000 Prague 8 (Czech Republic); Plekan, O. [Sincrotrone Trieste, AREA Science Park, I-34012 Basovizza (Italy); Ladas, S. [FORTH/ICE-HT, P.O. Box 1414, GR-26504 Rion, Patras (Greece); Surface Science Laboratory, Department of Chemical Engineering, University of Patras, GR-26504, Rion, Patras (Greece); Prince, K. [Sincrotrone Trieste, AREA Science Park, I-34012 Basovizza (Italy); INFM, Laboratorio TASC, in Area Science Park, Strada Statale 14, Km 163.5, 34012 Basovizza-Trieste (Italy); Chab, V. [Institute of Physics, Chech Academy of Sciences, Cucrovarnicka 10, Prague (Czech Republic)

2012-06-14T23:59:59.000Z

416

Direct Application of TiBor Coatings Projects (4583), 3/12/2012  

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

Direct Application of Ti8or Coatings Projects (4583) Direct Application of Ti8or Coatings Projects (4583) Program or Field Office: Y-12 Site Office Location(s) (City/County/State): Oak Ridge, Anderson County, Tennessee Proposed Action Description: Submit by E-mail The scope of this Cooperative Research and Development (CRADA) is to demonstrate the performance of Ti8or coatings on steel tools, specifically farming tools such as plows, which are normally subjected to significant wear during springtime use. Categorical Exclusion(s) Applied: 83.6 - Small-scale research and development, laboratory operations, and pilot projects 83.11 - Outdoor tests and experiments on materials and equipment components For the complete DOE National Environmental Policy Act regulations regarding categorical exclusions, including the full text of each

417

Optical properties of TiN thin films close to the superconductor-insulator transition.  

Science Conference Proceedings (OSTI)

We present the intrinsic optical properties over a broad spectral range of TiN thin films deposited on an Si/SiO{sub 2} substrate. We analyze the measured reflectivity spectra of the film-substrate multilayer structure within a well-establish procedure based on the Fresnel equation and extract the real part of the optical conductivity of TiN. We identify the metallic contribution as well as the finite energy excitations and disentangle the spectral weight distribution among them. The absorption spectrum of TiN bears some similarities with the electrodynamic response observed in the normal state of the high-temperature superconductors. Particularly, a mid-infrared feature in the optical conductivity is quite reminiscent of a pseudogap-like excitation.

Pfuner, F.; Degiorgi, L.; Baturina, T. I.; Vinokur, V. M.; Baklanov, M. R.; Materials Science Division; ETH Zurich; Inst. Semiconductor Physics; IMEC Kapeldreef

2009-11-10T23:59:59.000Z

418

Photoluminescence in disordered Zn{sub 2}TiO{sub 4}  

SciTech Connect

In this work, the polymeric precursor method was used to obtain disordered Zn{sub 2}TiO{sub 4} powders, either undoped or doped with Sn{sup 4+}, Cr{sup 3+} and V{sup 5+}, to be applied as photoluminescent material. The characterization was undertaken by means of thermal analysis (TG and DTA), X-ray diffraction (XRD), infrared spectroscopy (IR) and photoluminescence (PL). Previous works stated that titanate octahedra containing a short Ti-O distance show efficient luminescence at room temperature if these octahedra are isolated from each other. In the present work, the phenomenon was observed in condensed octahedra, sharing edges. The room temperature PL noticed in undoped Zn{sub 2}TiO{sub 4} had its intensity increased by the dopant addition-the increase was of about 300% for V{sup 5+} doping, 400% for Cr{sup 3+} and 800% for Sn{sup 4+}.

Chaves, Alexsandra C. [LTM, Departamento de Quimica, CCEN, Universidade Federal da Paraiba, 58059-900, Joao Pessoa, PB (Brazil); Lima, Severino J.G. [LSR, Departamento de Tecnologia Mecanica, CT, Universidade Federal da Paraiba, 58059-900, Joao Pessoa, PB (Brazil); Araujo, Regiane C.M.U. [LTM, Departamento de Quimica, CCEN, Universidade Federal da Paraiba, 58059-900, Joao Pessoa, PB (Brazil); Maurera, Maria Aldeiza M.A. [LTM, Departamento de Quimica, CCEN, Universidade Federal da Paraiba, 58059-900, Joao Pessoa, PB (Brazil); Longo, Elson [CMDMC, Instituto de Quimica de Araraquara, UNESP, 14800-900, Araraquara, SP (Brazil); Pizani, Paulo S. [Departamento de Fisica, Universidade Federal de Sao Carlos, Caixa Posta 676, 13565-905, Sao Carlos, SP (Brazil); Simoes, Luiz G.P. [CMDMC, Instituto de Quimica de Araraquara, UNESP, 14800-900, Araraquara, SP (Brazil); Soledade, Luiz E.B. [LTM, Departamento de Quimica, CCEN, Universidade Federal da Paraiba, 58059-900, Joao Pessoa, PB (Brazil); Souza, Antonio G. [LTM, Departamento de Quimica, CCEN, Universidade Federal da Paraiba, 58059-900, Joao Pessoa, PB (Brazil); Santos, Ieda Maria Garcia dos [LTM, Departamento de Quimica, CCEN, Universidade Federal da Paraiba, 58059-900, Joao Pessoa, PB (Brazil)]. E-mail: ieda@quimica.ufpb.br

2006-04-15T23:59:59.000Z

419

Atom-probe field-ion-microscopy study of Fe-Ti alloys  

DOE Green Energy (OSTI)

A newly developed high-performance atom-probe (field ion microscope) was employed for the composition analysis of Fe-Ti alloys and their interactions with ambient gas, such as H/sub 2/ and O/sub 2/. With a mass resolution (m/..delta..m) better than 2000 and a spatial resolution of a few A, all isotopes of Fe and Ti and their hydrides and other compounds are clearly resolved during the depth profile study. Some of our findings are: (1) Titanium segregated on the surface and grain boundaries upon heating (greater than or equal to 900/sup 0/C), in the form of oxides, and (2) some Ti in the bulk forms clusters of various sizes with C, O, and/or N as nuclei.

Pickering, H.W.; Kuk, Y.; Sakurai, T.

1980-01-01T23:59:59.000Z

420

Eutectic bonding of a Ti sputter coated, carbon aerogel wafer to a Ni foil  

Science Conference Proceedings (OSTI)

The formation of high energy density, storage devices is achievable using composite material systems. Alternate layering of carbon aerogel wafers and Ni foils with rnicroporous separators is a prospective composite for capacitor applications. An inherent problem exists to form a physical bond between Ni and the porous carbon wafer. The bonding process must be limited to temperatures less than 1000{degrees}C, at which point the aerogel begins to degrade. The advantage of a low temperature eutectic in the Ni-Ti alloy system solves this problem. Ti, a carbide former, is readily adherent as a sputter deposited thin film onto the carbon wafer. A vacuum bonding process is then used to join the Ni foil and Ti coating through eutectic phase formation. The parameters required for successfld bonding are described along with a structural characterization of the Ni foil-carbon aerogel wafer interface.

Jankowski, A.F.; Hayes, J.P.; Kanna, R.L.

1994-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "ti ng ph" 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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421

Molecular beam epitaxy of SrTiO{sub 3} with a growth window  

Science Conference Proceedings (OSTI)

Many complex oxides with only nonvolatile constituents do not have a wide growth window in conventional molecular beam epitaxy (MBE) approaches, which makes it difficult to obtain stoichiometric films. Here it is shown that a growth window in which the stoichiometry is self-regulating can be achieved for SrTiO{sub 3} films by using a hybrid MBE approach that uses a volatile metal-organic source for Ti, titanium tetra isopropoxide (TTIP). The growth window widens and shifts to higher TTIP/Sr flux ratios with increasing temperature, showing that it is related to the desorption of the volatile TTIP. We demonstrate stoichiometric, highly perfect, insulating SrTiO{sub 3} films. The approach can be adapted for the growth of other complex oxides that previously were believed to have no wide MBE growth window.

Jalan, Bharat; Moetakef, Pouya; Stemmer, Susanne [Materials Department, University of California, Santa Barbara, California 93106-5050 (United States)

2009-07-20T23:59:59.000Z

422

www.elsevier.com/locate/jssc Photoluminescence in disordered Zn 2TiO 4  

E-Print Network (OSTI)

In this work, the polymeric precursor method was used to obtain disordered Zn2TiO4 powders, either undoped or doped with Sn 4+, Cr 3+ and V 5+, to be applied as photoluminescent material. The characterization was undertaken by means of thermal analysis (TG and DTA), X-ray diffraction (XRD), infrared spectroscopy (IR) and photoluminescence (PL). Previous works stated that titanate octahedra containing a short Ti–O distance show efficient luminescence at room temperature if these octahedra are isolated from each other. In the present work, the phenomenon was observed in condensed octahedra, sharing edges. The room temperature PL noticed in undoped Zn2TiO4 had its intensity increased by the dopant addition—the increase was of about 300 % for V 5+ doping, 400 % for Cr 3+ and 800% for Sn 4+.

Ra C. Chaves A; Severino J. G. Lima B; Maria Aldeiza; M. A. Maurera A; Elson Longo C; Paulo S. Pizani D; Luiz G. P. Simo˜es C; Luiz E. B. Soledade A; Antonio G. Souza A; Ieda Maria; Garcia Santos

2005-01-01T23:59:59.000Z

423

Oral Histories: Physician James S. Robertson, M.D., Ph.D.  

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

8 8 HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS Oral History of Physician James S. Robertson, M.D., Ph.D. Conducted January 20, 1995 United States Department of Energy Office of Human Radiation Experiments September 1995 CONTENTS Foreword Short Biography Education Research on Human Subjects at Berkeley Invited to Join the New Lab at Brookhaven (1950) Boron Neutron Capture Therapy Other AEC Biomedical Programs Brookhaven Human Use Committee Castle Bravo Atomic Weapon Test (March 1, 1954) Studies on Marshallese at Brookhaven Modern BNCT Treatment Leaves Brookhaven for the Mayo Clinic (1975) Joins the Department of Energy (1983) Work at the Naval Radiological Defense Laboratory (1953–55) Controversial Treatments and the "Crackpot File" FOREWORD I n December 1993, U.S. Secretary of Energy Hazel R. O'Leary announced her Openness Initiative. As part of this initiative, the Department of Energy undertook an effort to identify and catalog historical documents on radiation experiments that had used human subjects. The Office of Human Radiation Experiments coordinated the Department's search for records about these experiments. An enormous volume of historical records has been located. Many of these records were disorganized; often poorly cataloged, if at all; and scattered across the country in holding areas, archives, and records centers.

424

Growth mechanism of in situ synthesized TiB{sub w} in titanium matrix composites prepared by common casting technique  

SciTech Connect

Titanium matrix composites reinforced with TiB and RE{sub 2}O{sub 3} (RE = rare earth metal) were fabricated by a non-consumable arc-melting technology utilizing chemical reaction between titanium, B{sub 2}O{sub 3} and RE. Microstructural characterization of in situ synthesized TiB was performed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). When the volume percentage is relatively low, the TiB shows a typical fine needle-shape due to the solidification process. The TiB whiskers have a B27 crystal structure and grow along the B27 [010] direction. Based on Density Functional Theory (DFT), the surface energies of B27 (100), (101), (101-bar ) and (001) planes were calculated. The results show that the cross sections of TiB whiskers are hexagonal and consist of (100), (101), (101-bar ) planes.

Lu, W.J. [State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030 (China)], E-mail: luweijie@sjtu.edu.cn; Xiao, L.; Geng, K.; Qin, J.N.; Zhang, D. [State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030 (China)

2008-07-15T23:59:59.000Z

425

High Density n-Si/n-TiO2 Core/Shell Nanowire Arrays with Enhanced Photoactivity  

DOE Green Energy (OSTI)

There are currently great needs to develop low-cost inorganic materials that can efficiently perform solar water splitting as photoelectrolysis of water into hydrogen and oxygen has significant potential to provide clean energy. We investigate the Si/TiO2 nanowire heterostructures to determine their potential for the photooxidation of water. We observed that highly dense Si/TiO2 core/shell nanowire arrays enhanced the photocurrent by 2.5 times compared to planar Si/TiO2 structure due to their low reflectance and high surface area. We also showed that n-Si/n-TiO2 nanowire arrays exhibited a larger photocurrent and open circuit voltage than p-Si/n-TiO2 nanowires due to a barrier at the heterojunction.

Hwang, Yun Jeong; Boukai, Akram; Yang, Peidong

2008-11-15T23:59:59.000Z

426

Effect of crystallinity and nonstoichiometric region on dielectric properties of SrTiO{sub 3} films formed on Ru  

Science Conference Proceedings (OSTI)

The dielectric constant depending on the film thickness for SrTiO{sub 3} films formed on Ru was investigated after an annealing step at 600 deg. C, which shows that the dielectric constant increased abruptly with the film thickness up to 20 nm and then increased slightly, remaining relatively constant at a value of about 65. The abrupt increase was due to the crystallinity of SrTiO{sub 3} films. On the other hand, the slight increase was related to the existence of nonstoichiometric region near the interface of SrTiO{sub 3} film and Ru, which was intermixed with SrTiO{sub 3} and Ti-O phases having an equivalent oxide thickness over 0.32 nm.

Kim, Ja-Yong; Ahn, Ji-Hoon; Kang, Sang-Won; Kim, Jin-Hyock; Roh, Jae-Sung [Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Hynix Semiconductor Incorporated, San 136-1, Ami-ri, Bubal-eub, Icheon-si, Kyoungki-do 467-701 (Korea, Republic of)

2007-08-27T23:59:59.000Z

427

A reaction mechanism for titanium nitride CVD from TiCl{sub 4} and NH{sub 3}  

Science Conference Proceedings (OSTI)

A gas-phase and surface reaction mechanism for the CVD of TiN from TiCl{sub 4} and NH{sub 3} is proposed. The only gas-phase process is complex formation, which can compete with deposition. The surface mechanism postulates the stepwise elimination of Cl and H atoms from TiCl{sub 4} and NH{sub 3}, respectively, to form solid TiN and gaseous HCl. The mechanism also accounts for the change in oxidation state of Ti by allowing for liberation of N{sub 2}. Provided that the surface composition is at steady state, the stoichiometry of the overall reaction is reproduced exactly. In addition, the global kinetic law predicted by the mechanism is successfully fit to new deposition data from a rotating disk reactor and is shown to be consistent with literature results.

Larson, R.S.; Allendorf, M.D.

1995-12-01T23:59:59.000Z

428

In Proceedings Human Systems Integration Symposium 2003, Vienna, VA, June 23-25, 2003. Joseph L. Gabbard, M.S., Deborah Hix, Ph.D., J. Edward Swan II, Ph.D.  

E-Print Network (OSTI)

for Complex Interactive Systems Development ABSTRACT Usability engineering is a cost-effective, user- centered systems (Section "Usability Engineering Case Studies: Developing Complex Interactive Systems"). For each, M.S., Simon J. Julier, Ph.D. Dennis Brown, M.S., Yohan Baillot, M.S. Usability Engineering

Gabbard, Joseph L.

429

Clusters and Magnetism in Epitaxial Co-doped TiO? Anatase.  

SciTech Connect

We show that under certain conditions, highly Co-enriched Ti0? anatase clusters nucleate on epitaxial Ti0? anatase grown on LaA?O?(001) by oxygen plasma assisted molecular beam epitaxy. In the most extreme cases, virtually all incident Co segregates to the clusters, yielding a nanoscale ferromagnitic phase that is not ferromagnetic in homogeneous films of the same Co concentration. The nucleation of this phase simultaneous with continuous epitaxial film growth must be carefully monitored in order to avoid drawing false conclusions about the film structure

Chambers, Scott A.; Droubay, Timothy; Wang, Chong M.; Lea, Alan S.; Farrow, R.F.C; Folks, L.; Deline, V.; Anders, S.

2003-02-24T23:59:59.000Z

430

Mixed-sputter deposition of Ni-Ti-Cu shape memory films  

SciTech Connect

Ni-Ti-Cu shape memory films were mixed-sputter deposited from separate nickel, titanium, and copper targets, providing increased compositional flexibility. Shape memory characteristics, examined for films with 7 at. % Cu and 41--51 at. % Tl, were determined with temperature controlled substrate curvature measurements, and microstructure was studied with transmission electron microscopy. The Ni-Ti-Cu films were found to have shape memory properties comparable to bulk materials, with transformation temperatures between 20 and 62{degree}C, a 10--13{degree}C hysteresis, and up to 330 MPa recoverable stress.

Krulevitch, P.; Ramsey, P.B.; Makowiecki, D.M.; Lee, A.P.; Northrup, M.A. [Lawrence Livermore National Lab., CA (United States); Johnson, G.C. [California Univ., Berkeley, CA (United States). Dept. of Mechanical Engineering

1994-05-01T23:59:59.000Z

431

Advances in the Surface Science of TiO2 – A Global Perspective  

SciTech Connect

TiO2 rutile single-crystal surfaces have served has useful prototypical, well-defined specimens for fundamental investigations of oxide surface science for many years. As a result of both experimental and theoretical efforts, we have gained considerable insight into the structural, electronic, thermochemical and photochemical properties of pristine as well as defective surfaces. In this brief review, I summarize some of the recent advances that have been made in the laboratories of participants of the International Workshop of Oxide Surfaces (IWOX) series, principally on TiO2(110).

Chambers, Scott A.

2007-10-10T23:59:59.000Z

432

Characterizations Of Precipitate Phases In a Ti-Ni-Pd Alloy  

Science Conference Proceedings (OSTI)

Precipitates in the Ti46Ni37.5Pd16.5 alloy were investigated by electron diffraction and high-resolution scanning transmission electron microscopy. The phase content and stability were determined at several different temperatures and times. Aging at 400 C for an hour results in a new phase, which is consumed by P-phase at longer aging time. At 450 C, the new phase appears first, and then coexists with P-phase. At 500 C, the entire alloy transformed into the new phase. At 550 C, Ti3(Ni,Pd)4 phase begins to form.

Yang, Fan; Kovarik, Libor; Phillips, Patrick J.; Noebe, Ronald D.; Mills, M. J.

2012-06-01T23:59:59.000Z

433

Photoinduced charge transfer between fullerenes and TiO{sub 2} semiconductor colloids  

Science Conference Proceedings (OSTI)

A photocatalytic method has been presented to carry out one-electron reduction of C{sub 60} and C{sub 70} in 50/50 (v/v) benzene/ethanol. The fullerene reduction was carried out in colloidal TiO{sub 2} suspension using UV excitation. The charge transfer between the excited TiO{sub 2} semiconductor colloid and fullerene molecule occurs with a quantum efficiency of 13% for C{sub 70} and 24% for C{sub 60}. Laser flash photolysis measurements have been carried out to elucidate the mechanism of photocatalytic reduction.

Kamat, P.V. [Univ. of Notre Dame, IN (United States). Radiation Lab.; Bedja, I.; Hotchandani, S. [Universite du Quebec a Trois Rivieres (Canada). Centre de Recherche en Photobiophysique

1994-10-01T23:59:59.000Z

434

Enhancing the Electron Mobility via Delta-Doping in SrTiO3  

Science Conference Proceedings (OSTI)

We fabricated high-mobility {delta}-doped structures in SrTiO{sub 3} thin films in order to investigate the low temperature electronic transport properties of confined carriers in this system. An enhancement of the electron mobility above the bulk value was observed as the doped layer thickness decreased. High-field Hall measurements revealed that this mobility enhancement originates from higher-mobility electrons in the undoped clean regions, which have quantum-mechanically broadened from the doped layer. Because of the absence of apparent lattice misfit between the layers, this structure is highly suitable for investigating two-dimensional electron gases in SrTiO{sub 3}

Kozuka, Y.

2011-08-11T23:59:59.000Z

435

Diffusion bonding of Ti coated Zircaloy-4 and 316-L stainless steel  

SciTech Connect

Diffusion bonding of Zircaloy-4 and Type 316-L stainless steel was carried out by coating the joining surfaces with Ti to minimize the interlayer effect. Bonding heat treatments were carried out in vacuum at 1000 deg. C for 4 h and 1050 deg. C for 1 h. The microstructure of the diffusion zone was investigated by scanning electron microscopy and the phases in the diffusion zone were analyzed by energy dispersive spectroscopy. It is observed that Ti coating at the interface produced a dendritic structure in the diffusion zone formed in the Zircaloy-4. The concentration of the dendrites increases with an increase in bonding temperature.

Akhter, J.I. [Physics Division, Pakistan Institute of Nuclear Science and Technology, P. O. Nilore, Islamabad (Pakistan)], E-mail: jiakhter@yahoo.com; Ahmad, M.; Ali, G. [Physics Division, Pakistan Institute of Nuclear Science and Technology, P. O. Nilore, Islamabad (Pakistan)

2009-03-15T23:59:59.000Z

436

THE SENSITIVITY OF CARBON STEELS' SUSCEPTIBILITY TO LOCALIZED CORROSION TO THE PH OF NITRATE BASED NUCLEAR WASTES  

SciTech Connect

The Hanford tank reservation contains approximately 50 million gallons of liquid legacy radioactive waste from cold war weapons production, which is stored in 177 underground storage tanks. The tanks will be in use until waste processing operations are completed. The wastes tend to be high pH (over 10) and nitrate based. Under these alkaline conditions carbon steels tend to be passive and undergo relatively slow uniform corrosion. However, the presence of nitrate and other aggressive species, can lead to pitting and stress corrosion cracking. This work is a continuation of previous work that investigated the propensity of steels to suffer pitting and stress corrosion cracking in various waste simulants. The focus of this work is an investigation of the sensitivity of the steels' pitting and stress corrosion cracking susceptibility tosimulant pH. Previous work demonstrated that wastes that are high in aggressive nitrate and low in inhibitory nitrite are susceptible to localized corrosion. However, the previous work involved wastes with pH 12 or higher. The current work involves wastes with lower pH of 10 or 11. It is expected that at these lower pHs that a higher nitrite-to-nitrate ratio will be necessary to ensure tank integrity. This experimental work involved both electrochemical testing, and slow strain rate testing at either the free corrosion potential or under anodic polarization. The results of the current work will be discussed, and compared to work previously presented.

BOOMER KD

2010-01-14T23:59:59.000Z

437

Simulation of the dissolved oxygen concentration and the pH value at the O2-FET  

Science Conference Proceedings (OSTI)

The O2-FET is a pH ion sensitive field effect transistor (ISFET) modified to measure dissolved oxygen via the acidification from an amperometric dissolved oxygen microsensor. A diffusion based finite elements model which describes the transactions at ... Keywords: ISFET, diffusion, dissolved oxygen, finite elements simulation

J. Wiest; S. Blank; M. Brischwein; H. Grothe; B. Wolf

2008-02-01T23:59:59.000Z

438

Summary of PhD Thesis: Supercapacitor energy storage systems and power converters for the reduction of energy consumption  

E-Print Network (OSTI)

Summary of PhD Thesis: Supercapacitor energy storage systems and power converters for the reduction savings that could be achieved in the public transport sector by using supercapacitor based energy of a conventional line with that of a tram/metro line benefiting from supercapacitors (or other ESS technologies

Glineur, François

439

Canal Wave Oscillations from the I-84 Bridge Expansion in Boise, Idaho William Rahmeyer, Ph.D., P.E.*  

E-Print Network (OSTI)

Canal Wave Oscillations from the I-84 Bridge Expansion in Boise, Idaho By William Rahmeyer, Ph-84 Bridge crossing of the New York Canal in Boise, Idaho have increased the number of bridge columns oscillations. #12;Rahmeyer, Clegg, Barfuss 2 INTRODUCTION AND BACKGROUND As part of the Idaho Transportation

Rahmeyer, William J.

440

arXiv:astro-ph/0410680v227Jan2005 Crossing the Phantom Divide: Dark Energy Internal Degrees of Freedom  

E-Print Network (OSTI)

arXiv:astro-ph/0410680v227Jan2005 Crossing the Phantom Divide: Dark Energy Internal Degrees Fermi Institute, University of Chicago, Chicago IL 60637 Dark energy constraints have forced viable that evolves across the phantom divide set by . Naively, crossing this divide makes the dark energy

Hu, Wayne

Note: This page contains sample records for the topic "ti ng ph" 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

arXiv:astro-ph/0208093v327Nov2002 Dark Energy and Matter Evolution from Lensing Tomography  

E-Print Network (OSTI)

arXiv:astro-ph/0208093v327Nov2002 Dark Energy and Matter Evolution from Lensing Tomography Wayne Hu on the growth function of structure and the evolution of the dark energy density. We examine this potential tests for the existence of multiple dark matter components or a dark energy component

Hu, Wayne

442

arXiv:astro-ph/0407158v17Jul2004 Dark Energy Probes in Light of the CMB  

E-Print Network (OSTI)

arXiv:astro-ph/0407158v17Jul2004 Dark Energy Probes in Light of the CMB Wayne Hu Kavli Institute regime and provided two self-calibrated absolute standards for dark energy studies: the sound horizon redshift range or depth. The single most important complement to the CMB for measuring the dark energy

Hu, Wayne

443

arXiv:astro-ph/0408456v21Dec2004 Measuring Dark Energy Clustering with CMB-Galaxy Correlations  

E-Print Network (OSTI)

arXiv:astro-ph/0408456v21Dec2004 Measuring Dark Energy Clustering with CMB-Galaxy Correlations opportunity to study the dynamics of the dark energy through its large scale clustering properties. Ultimately 3% changes in the gravitational potential or total density fluctuation due to dark energy clustering

Hu, Wayne

444

arXiv:0706.2986v1[astro-ph]20Jun2007 DARK MATTER AND DARK ENERGY  

E-Print Network (OSTI)

arXiv:0706.2986v1[astro-ph]20Jun2007 DARK MATTER AND DARK ENERGY MARC KAMIONKOWSKI California, and/or the introduction of some negative-pressure "dark energy," again, the nature of which remains Press. kamion@tapir.caltech.edu 1 #12;Dark Matter and Dark Energy 2 eries may help us understand the new

Steidel, Chuck

445

arXiv:astro-ph/0406496v122Jun2004 A Low CMB Quadrupole from Dark Energy Isocurvature Perturbations  

E-Print Network (OSTI)

arXiv:astro-ph/0406496v122Jun2004 A Low CMB Quadrupole from Dark Energy Isocurvature Perturbations, Chicago IL 60637 We explicate the origin of the temperature quadrupole in the adiabatic dark energy model and explore the mechanism by which scale invariant isocurvature dark energy perturbations can lead to its

Hu, Wayne

446

Photochemistry of Group 14 1,1,1-Trimethyl-2,2,2-triphenyldimetallanes (Ph3MMMe3;  

E-Print Network (OSTI)

methods and is compared to previously reported data for the homologous disilane Ph3SiSiMe3. A variety and compared to that of the disilane homologue. The results of time-resolved experiments on other, related on the degree of aryl substitution in the disilane and on the solvent. This complexity is most aptly

Leigh, William J.

447

Shepherdstown's "Battle of the Cedars" Alan R. Biggs, Ph.D.; Professor of Plant Pathology and Extension Specialist  

E-Print Network (OSTI)

Shepherdstown's "Battle of the Cedars" Alan R. Biggs, Ph.D.; Professor of Plant Pathology" because of the reddish-yellow color they display on their plant hosts during their parasitic phase. You-virginianae, like many rusts, is heteroecious, meaning that it spends part of its life cycle on one plant, a red

Mohaghegh, Shahab

448

arXiv:submit/0451583[physics.gen-ph]8Apr2012 Including Nuclear Degrees of Freedom in a Lattice  

E-Print Network (OSTI)

arXiv:submit/0451583[physics.gen-ph]8Apr2012 Including Nuclear Degrees of Freedom in a Lattice and Engineering, University of Engineering and Technology. Lahore, Pakistan Abstract. Motivated by many condensed matter and nuclear systems are described initially on the same footing. Since it may be possible

Williams, Brian C.

449

Open PhD position at EURECOM/INRIA (Sophia-Antipolis) Mathematical Tools for Smart Grids  

E-Print Network (OSTI)

Open PhD position at EURECOM/INRIA (Sophia-Antipolis) Mathematical Tools for Smart Grids are calling for more intelligence in the electrical power grid, so that the expression "smart grids" has been to efficiently manage their charging. The economic interest behind smart grids is enormous. This justifies

Gatti, Nicola

450

Reaction of U-VI with titanium-substituted magnetite: Influence of Ti on U-IV speciation  

SciTech Connect

Reduction of hexavalent uranium (UVI) to less soluble tetravalent uranium (UIV) through enzymatic or abiotic redox reactions has the potential to alter U mobility in subsurface environments. As a ubiquitous natural mineral, magnetite (Fe3O4) is of interest because of its ability to act as a rechargeable reductant for UVI. Natural magnetites are often impure with titanium, and structural Fe3+ replacement by TiIV yields a proportional increase in the relative Fe2+ content in the metal sublattice to maintain bulk charge neutrality. In the absence of oxidation, the Ti content sets the initial bulk Fe2+/Fe3+ ratio (R). Here, we demonstrate that Ti-doped magnetites (Fe3 xTixO4) reduce UVI to UIV. The UVI-Fe2+ redox reactivity was found to be controlled directly by R, but was otherwise independent of Ti content (xTi). However, in contrast to previous studies with pure magnetite where UVI was reduced to nanocrystalline uraninite (UO2), the presence of structural Ti (xTi = 0.25 0.53) results in the formation of UIV species that lack the bidentate U-O2-U bridges of uraninite. Extended x-ray absorption fine structure spectroscopic analysis indicated that the titanomagnetite-bound UIV phase has a novel UIV-Ti binding geometry, different from the coordination of UIV in the mineral brannerite (UIVTi2O6). The observed UIV-Ti coordination at a distance of 3.43 Å suggests a binuclear corner-sharing adsorption/incorporation UIV complex with the solid phase. Furthermore, we explored the effect of oxidation (decreasing R) and solids-to-solution ratio on the reduced UIV phase. The formation of the non-uraninite UIV-Ti phase appears to be controlled by availability of surface Ti sites, rather than R. Our work highlights a previously unrecognized role of Ti in the environmental chemistry of UIV and suggests that further work to characterize the long-term stability of UIV phases formed in the presence of Ti is warranted.

Latta, Drew; Pearce, Carolyn I.; Rosso, Kevin M.; Kemner, Kenneth M.; Boyanov, Maxim I.

2013-07-01T23:59:59.000Z

451

Development of a high temperature pH electrode for geothermal fluids. Final report, Task III and year end summary  

DOE Green Energy (OSTI)

This report summarizes work done to demonstrate the applicability of a stabilized zirconia pH sensor to high temperature measurements on brines containing as much as 20 weight percent NaCl and 100 ppM hydrogen sulfide. Throughout the program stable operation was achieved, and measured pH values were in good agreement with calculated values. Differences were generally less than 0.5 pH unit at 285/sup 0/C, and it is not yet certain whether the discrepancies are associated with the measured or calculated values of the pH. While some sensors failed through cracking or because of uperfected seals, no signs of chemical degradation of the ceramic were detected during tests at 285/sup 0/C covering a range of pH between 3 and 9. Two sensors were operated at 285/sup 0/C for periods of 11 days, and one was employed in successive tests for a total of 37 days. At the end of this period the sensor was still satisfactory, and it was forwarded to the sponsoring laboratory, PNL, for further tests. Although most of the work was performed at 285/sup 0/C a limited amount of testing was done at lower temperatures: 95, 150, and 225/sup 0/C. Sensors prepared from in-house tubes and from tubes obtained from a new supplier performed well at 95/sup 0/C for extended periods, in spite of earlier difficulties with the standard ceramic at this temperature. There is still, however, some uncertainty concerning the adequacy of our seals particularly in cycling between 285/sup 0/C and lower temperatures.

Niedrach, L.W.; Stoddard, W.H.

1983-02-01T23:59:59.000Z

452

Resistance spot welding of Ti-6A1-4V alloy  

SciTech Connect

The effects of weld power, electrode force, electrode tip radius, and elapsed time between cleaning and welding on resistance spot welds in Ti-6Al-4V alloy were evaluated. The alloy is weldable by this technique, and a wide latitude can be taken in processing variables.

Jarboe, D.M.

1980-06-01T23:59:59.000Z

453

Pseudocapacitive Lithium-Ion Storage in Oriented Anatase TiO2 Nanotube Arrays  

SciTech Connect

We report on the synthesis and electrochemical properties of oriented anatase TiO{sub 2} nanotube (NT) arrays as electrodes for Li-ion batteries. The TiO{sub 2} NT electrodes displayed both pseudocapacitive Li{sup +} storage associated with the NT surface and the Li{sup +} storage within the bulk material. The relative contribution of the pseudocapacitive and bulk storages depends strongly on the scan rate. While the charges are stored primarily in the bulk at low scan rates (<< 1 mV/s), the surface storage dominates the total storage capacity at higher scan rates (>1 mV/s). The storage capacity of the NT electrodes as a function of charge/discharge rates showed no dependence on the NT film thickness, suggesting that the Li{sup +} insertion/extraction processes occur homogeneously across the entire length of NT arrays. These results indicated that the electron conduction along the NT walls and the ion conduction within the electrolyte do not cause significant hindering of the charge/discharge kinetics for NT electrode architectures. As a result of the surface pseudocapacitive storage, the reversible Li{sup +} storage capacities for TiO{sub 2} NT electrodes were higher than the theoretical storage capacity for bulk anatase TiO{sub 2} materials.

Zhu, K.; Wang, Q.; Kim, J. H.; Pesaran, A. A.; Frank, A. J.

2012-06-07T23:59:59.000Z

454

(Ba,Sr)TiO3 dielectrics for future stacked- capacitor DRAM  

Science Conference Proceedings (OSTI)

Thin films of barium-strontium titanate (Ba,Sr)TiO3 (BSTO) have been investigated for use as a capacitor dielectric for future generations of dynamic random-access memory (DRAM). This paper describes progress made in the preparation of BSTO ...

D. E. Kotecki; J. D. Baniecki; H. Shen; R. B. Laibowitz; K. L. Saenger; J. J. Lian; T. M. Shaw; S. D. Athavale; C. Cabral; P. R. Duncombe; M. Gutsche; G. Kunkel; Y.-J. Park; Y.-Y. Wang; R. Wise

1999-05-01T23:59:59.000Z

455

High-field superconductivity in some bcc Ti-Mo and Nb-Zr alloys  

Science Conference Proceedings (OSTI)

Zero electrical resistance at unusually high magnetic field strengths has been observed in the bcc alloys Ti-16 a/o (atomic percent) Mo, Nb-12 a/o Zr, and Nb-25 a/o Zr. The maximum highfield zero-resistance current density, Jc, in these ...

R. R. Hake; T. G. Berlincourt; D. H. Leslie

1962-01-01T23:59:59.000Z

456

Properties of ion implanted Ti-6Al-4V processed using beamline and PSII techniques  

DOE Green Energy (OSTI)

The surface of Ti-6Al-4V (Ti64) alloy has been modified using beamline implantation of boron. In separate experiments, Ti64 has been implanted with nitrogen using a plasma source ion implantation (PSII) technique utilizing either ammonia (NH{sub 3}), nitrogen (N{sub 2}), or their combinations as the source of nitrogen ions. Beamline experiments have shown the hardness of the N-implanted surface saturates at a dose level of {approximately} 4 {times} 10{sup 17} at/cm{sup 2} at {approximately} 10 GPa. The present work makes comparisons of hardness and tribological tests of (1) B implantation using beamline techniques, and (2) N implanted samples using ammonia and/or nitrogen gas in a PSII process. The results show that PSII using N{sub 2} or NH{sub 3} gives similar hardness as N implantation using a beamline process. The presence of H in the Ti alloy surface does not affect the hardness of the implanted surface. Boron implantation increased the surface hardness by as much as 2.5x at the highest dose level. Wear testing by a pin-on-disk method indicated that nitrogen implantation reduced the wear rate by as much as 120x, and boron implantation reduced the wear rate by 6.5x. Increased wear resistance was accompanied by a decreased coefficient of friction.

Walter, K.C.; Woodring, J.S.; Nastasi, M.; Munson, C.M. [Los Alamos National Lab., NM (United States); Williams, J.M.; Poker, D.B. [Oak Ridge National Lab., TN (United States). Solid State Div.

1996-12-31T23:59:59.000Z

457

Variant Selection during Alpha Precipitation in Ti-6Al-4V under the ...  

Science Conference Proceedings (OSTI)

... to available thermodynamic and mobility databases, but also incorporating the ... Characterizing and Exploring the Broad Utility of Kinetic Metallization, ... Effect of Heating Rate on the Short Time Aging Kinetics of Ti-6.8Mo-4.5Fe-1.5Al.

458

Enhanced Photovoltaic Performance of Nanostructured Hybrid Solar Cell Using Highly Oriented TiO2 Nanotubes  

E-Print Network (OSTI)

Enhanced Photovoltaic Performance of Nanostructured Hybrid Solar Cell Using Highly Oriented TiO2 nanotubes can be effectively controlled for the suitable use for a hybrid solar cell by varying the diameter nanotubes to form hybrid solar cells. The open circuit voltage, short circuit current density, fill factor

Cao, Guozhong

459

Band-engineered SrTiO{sub 3} nanowires for visible light photocatalysis  

Science Conference Proceedings (OSTI)

We have theoretically investigated the structural, electronic, and optical properties of perovskite SrTiO{sub 3} nanowires for use in visible light photocatalytic applications using pseudopotential density-functional theory calculations. The electronic structure calculations show that the band gap is modified in the SrTiO{sub 3} nanowires compared with that of the bulk. For TiO{sub 2}-terminated nanowires, the mid-band states induced by the combination of oxygen and strontium atoms on the surface lead to a shift in the valence band toward the conduction band without interference from the edge of the conduction band, which reduces the band gap. On the contrary, the electronic states induced by the combination of oxygen and strontium atoms on the surface of SrO-terminated nanowires lead to a shift in the conduction band toward the valence band. The calculated optical results indicate that the absorption edge of the nanowires shift towards the red-light region. These theoretical results suggest that perovskite SrTiO{sub 3} nanowires are promising candidates for use in visible light photocatalytic processes such as solar-assisted water splitting reactions.

Fu, Q.; He, T.; Li, J. L.; Yang, G. W. [State Key Laboratory of Optoelectronic Materials and Technologies, Institute of Optoelectronic and Functional Composite Materials, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong (China)

2012-11-15T23:59:59.000Z

460

China For all ages a MulTi-generaTional exPloraTion  

E-Print Network (OSTI)

China For all ages a MulTi-generaTional exPloraTion The greaT Wall, TerraCoTTa Warriors & The MighCTuresque China Experience the Delights of a Well-Crafted Family Tour Dear Princetonian, Join Princeton Journeys, June 27 ­ July 9, 2013, for a comprehensive tour of China designed with families in mind. Explore

Rowley, Clarence W.

Note: This page contains sample records for the topic "ti ng ph" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Photoluminescence of samarium-doped TiO{sub 2} nanotubes  

SciTech Connect

Samarium (Sm)-modified TiO{sub 2} nanotubes (TNTs) were synthesized by low-temperature soft chemical processing. X-ray powder diffraction analyses of the synthesized Sm-doped and non-doped TNTs show a broad peak near 2{theta}=10{sup o}, which is typical of TNTs. The binding energy of Sm {sup 3}d{sub 5/2} for 10 mol% Sm-doped TNT (1088.3 eV) was chemically shifted from that of Sm{sub 2}O{sub 3} (1087.5 eV), showing that Sm existed in the TiO{sub 2} lattice. Sm-doped TNTs clearly exhibited red fluorescence, corresponding to the doped Sm{sup 3+} ion in the TNT lattice. The Sm-doped TNT excitation spectrum exhibited a broad curve, which was similar to the UV-vis optical absorption spectrum. Thus, it was considered that the photoluminescence emission of Sm{sup 3+}-doped TNT with UV-light irradiation was caused by the energy transfer from the TNT matrix via the band-to-band excitation of TiO{sub 2} to the Sm{sup 3+} ion. - Graphical Abstract: Samarium-doped TiO{sub 2} nanotubes (TNTs) having a nanotubular structure were synthesized by soft chemical route. It was revealed that the energy associated by the band-to-band excitation of TNT matrix transferred to the doped Sm{sup 3+} ions in the lattice, resulting in emission of strong and visible red fluorescence. Highlights: > Sm-doped TiO{sub 2} nanotubes synthesized by low-temperature soft chemical processing. > Sm{sup 3+} substitutes Ti{sup 4+} ions in the nanotube lattice. > Clear fluorescent emission due to the f-f transition at the Sm{sup 3+} in a crystal field environment. > Band-to-band excitation of TiO{sub 2} and followed energy transfer to Sm{sup 3+} causes the luminescence.

Park, Dong Jin [Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Sekino, Tohru, E-mail: sekino@tagen.tohoku.ac.jp [Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Tsukuda, Satoshi [Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Hayashi, Asuka [Institute of Scientific and Industrial Research (ISIR), Osaka University, 8-1, Mihogaoka, Ibaraki, Osaka 567-0047 (Japan); Kusunose, Takafumi [Faculty of Engineering, Kagawa University, Hayashi 2217-20, Takamatsu, Kagawa 761-0396 (Japan); Tanaka, Shun-Ichiro [Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan)

2011-10-15T23:59:59.000Z

462

Photocatalytic degradation of 4-chlorophenol: The effects of varying TiO{sub 2} concentration and light wavelength  

Science Conference Proceedings (OSTI)

The effects of TiO{sub 2} surface loading and light conditions on the photocatalyzed degradation of 4-chlorophenol (4-CP) were examined, in order to address deficiencies in previous studies in which these issues were not examined satisfactorily. It is proposed that these factors explain differences in the reported reaction intermediate concentrations. Increasing the loading of TiO{sub 2} in a slurry has little effect on the rate of 4-CP disappearance. However, the concentration of 4-chlorocatechol (4-CC), a primary degradation product decreases with increasing TiO{sub 2}. The rate of mineralization increased with increasing TiO{sub 2} concentration was more rapid under conditions of lower light intensity. Significant adsorption of 4-CC on Degussa P25 TiO{sub 2} was measured and these data are fitted well by a Langmuir isotherm. Adsorption of 4-CC accounts for most of the changes in 4-CC concentration at different TiO{sub 2} loadings. An increased proportion of surface oxidation reactions at higher TiO{sub 2} loadings and lower light intensity may explain the higher rates of mineralization in thicker slurries. The quantum yield of reaction of 4-CP increased with decreasing wavelength of light from {phi} = 0.0 1, at {lambda} = 360 nm to {phi} = 0.07, at {lambda} = 300 nm. A relationship of d[4-CP]/dt {proportional_to} I{sup 0.8} was measured. 29 refs., 7 figs., 4 tabs.

Stafford, U.; Gray, K.A.; Kamat, P.V. [Univ. of Notre Dame, IN (United States)

1997-04-01T23:59:59.000Z

463

Electronic and optical properties of TiCoSb under different pressures  

Science Conference Proceedings (OSTI)

The electronic structure and optical properties of TiCoSb are studied by the first-principles calculation. It is found that the band gaps increase with the pressure increasing. It is noted that the increase of the band gap is due to the electrons of Ti 3d and Co 3d of the valence band (VB) shifting away from the Fermi level. Our calculation indicates that TiCoSb has the large density of state near the Fermi level; moreover, the changes of the density of states near the Fermi level mainly are caused by Ti 3d and Co 3d under the different pressures. It is noted that the absorption edge increases with an increase of pressure. As pressure increases, the static dielectric constants {epsilon}{sub 1}(0) decrease. All peaks of the imaginary part of the dielectric function {epsilon}{sub 2}({omega}) move towards higher energies within increasing pressure. - Graphical abstract: The first peak positions of the absorption spectrum increase and shift the high energy with an increase of pressure. The buleshift of the absorption edge could be observed. Highlights: Black-Right-Pointing-Pointer It is noted that the increase of the band gap is due to the electrons of Ti 3d and Co 3d of VB moving away from the Fermi level. Black-Right-Pointing-Pointer It is noted that the absorption edge increases with an increase of pressure. Black-Right-Pointing-Pointer As pressure increases, the static dielectric constant {epsilon}{sub 1}(0) decreases. Black-Right-Pointing-Pointer All peaks of the imaginary part of the dielectric function {epsilon}{sub 2}({omega}) move to wards higher energies within creasing pressure.

Xu Bin, E-mail: hnsqxb@163.com [Department of Mathematics and Information Sciences, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011 (China); Zhang Jing [Department of Mathematics and Information Sciences, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011 (China); Liang Jianchu [Department of electronic science, Huizhou University, Guangdong 516001 (China); Gao Guoying; Yi Lin [Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 (China)

2012-08-15T23:59:59.000Z

464

Lattice variations of Ti-6Al-4V alloy with hydrogen content  

Science Conference Proceedings (OSTI)

Effect of hydrogen content on the lattice parameter of Ti-6Al-4V alloy has been investigated by X-ray diffraction. The experimental results show that the solution of hydrogen in the Ti-6Al-4V alloy affects significantly on the lattice parameters of {alpha}, {beta} and {delta} phases, especially the {beta} phase. Furthermore, the critical hydrogen content of {delta} hydride formation for Ti-6Al-4V alloy is 0.385 wt.%. When the hydrogen content is lower than the critical hydrogen content, the {delta} hydride cannot precipitate and the lattice parameter ({alpha}) of {beta} phase linearly increases with the increasing of hydrogen content. When the hydrogen content is higher than the critical hydrogen content, the {delta} hydride precipitates and the lattice parameter ({alpha}) of {beta} phase varies inconspicuously with hydrogen content. In addition, the effects of lattice variations and {delta} hydride formation on microstructure are discussed. The {alpha}/{beta} interfaces of lamellar transformed {beta} phase become fuzzy with the increasing of hydrogen content because of the lattice expansion of {beta} phase. Compared with that of the Ti-6Al-4V alloy at low hydrogen content ({=} 0.385 wt.%) were completely reversed due to the formation of {delta} hydride. - Research Highlights: {yields} A novel method for determining {delta} hydride in Ti-6Al-4V alloy is presented. {yields} The critical hydrogen content of {delta} hydride formation is 0.385 wt.%. {yields} The lattice parameter of {beta} phase can be expressed as follows: a=0.323(1+9.9x10{sup -2}C{sub H}) . {yields} Precipitation of {delta} hydride has a significant influence on the microstructure. {yields} The {alpha}/{beta} interfaces of transformed {beta} phase became fuzzy in the hydrogenated alloy.

Zhu Tangkui, E-mail: zhutangkui@sohu.com; Li, Miaoquan, E-mail: honeymli@nwpu.edu.cn

2011-07-15T23:59:59.000Z

465

Preparation and photocatalytic activity of high-efficiency visible-light-responsive photocatalyst SnS{sub x}/TiO{sub 2}  

Science Conference Proceedings (OSTI)

Visible-light-responsive composite photocatalysts SnS{sub 2}/TiO{sub 2} and SnS/TiO{sub 2} with different mass ratios were prepared by in-situ synthesis technology in solution with commercial TiO{sub 2}. The junction-based materials SnS{sub x} (x=1, 2)/TiO{sub 2} were found to have high visible-light photocatalytic performance and possess much better activity than the single-phase SnS{sub x} or TiO{sub 2}. The greatly enhanced photocatalytic activity of the SnS{sub x}/TiO{sub 2} composites was mainly attributed to the matching band potentials and efficient charge transfer and separation at the tight-bonding interface between SnS{sub x} and TiO{sub 2}. The fact was confirmed by the comparison of photocatalytic activities of the SnS{sub 2}/TiO{sub 2} samples prepared by physical mixing method and in-situ synthesis technique. - Graphical Abstract: Visible-light-responsive composite photocatalysts SnS{sub 2}/TiO{sub 2} and SnS/TiO{sub 2} with different mass ratios were prepared by in-situ synthesis technology in solution with commercial TiO{sub 2}. The photocatalysts SnS{sub x} (x=1, 2) and SnS{sub x}/TiO{sub 2} possess excellent photocatalytic activities. The greatly enhanced photocatalytic activity of the SnS{sub x}/TiO{sub 2} composites was mainly attributed to the matching band potentials and efficient charge transfer and separation at the tight-bonding interface between SnS{sub x} and TiO{sub 2}.

Yang Chongyin; Wang Wendeng; Shan Zhichao [State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); Huang Fuqiang, E-mail: huangfq@mail.sic.ac.c [State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)

2009-04-15T23:59:59.000Z

466

Steam Generator Management Program: Effects of Different pH Control Agents on Pressurized Water Reactor Plant Systems and Components  

Science Conference Proceedings (OSTI)

Corrosion of materials in the condensate, feedwater, and drain systems of PWRs generates a significant amount of corrosion products in the secondary cycle. These corrosion products are generally transported into the steam generators and deposit on tubing surfaces, tubesheets, and tube support plates. Increased corrosion results in elevated levels of undesired corrosion products being deposited into the steam generators. To minimize corrosion of the secondary system components, control of pH in the second...

2009-12-04T23:59:59.000Z

467

Steam Generator Management Program: Laboratory Testing to Validate pH and Conductivity MULTEQ Calculations, Revision 1  

Science Conference Proceedings (OSTI)

Measures to control corrosion processes in steam generators have for the most part proven successful to date, but intergranular attack/stress corrosion cracking (IGA/SCC) of Alloy 600 continues to occur in steam generators at some nuclear plants. The present mitigation strategy is based on the premise that crack initiation and propagation rates depend on pH and electrochemical potential. There is some evidence suggesting that lead (Pb) may play a key role. This report documents laboratory testing to vali...

2011-11-28T23:59:59.000Z

468

Li4Ti5O12 as an anode material for Li ion batteries in situ XRD and XPS studies.  

E-Print Network (OSTI)

?? This thesis examines parts of the kinetics and performance in Li-battery cells using lithium titanate anodes and lithium manganese oxide cathodes. Lithium titanate (Li4Ti5O12)… (more)

Nordh, Tim

2013-01-01T23:59:59.000Z

469

Modification of the spontaneous emission of CdTe nanocrystals in TiO 2 inverted opals  

Science Conference Proceedings (OSTI)

A light source in a three-dimensional photonic crystal has been realized by depositing CdTenanocrystals on the inner surface of TiO 2 inverted opalfilms. Two effects

V. G. Solovyev; S. G. Romanov; C. M. Sotomayor Torres; M. Müller; R. Zentel; N. Gaponik; A. Eychmüller; A. L. Rogach

2003-01-01T23:59:59.000Z

470

T ti E St S tTetiaroa Energy Storage System Estimated ZBB Zinc Bromide Battery Performance and Costs  

E-Print Network (OSTI)

T ti E St S tTetiaroa Energy Storage System Estimated ZBB Zinc Bromide Battery Performance and Costs Prull / KammenPrull / Kammen Renewable and Appropriate Energy Lab, UC Berkeley 7/26/2010 http

Kammen, Daniel M.

471

Adsorption of TiCl[sub 4], SiH[sub 4], and HCl on Si(100): Application to TiSi[sub 2] chemical vapor deposition and Si etching  

SciTech Connect

The interactions of TiCl[sub 4], SiH[sub 4], and HCl with Si(100) have been investigated by temperature programmed desorption (TPD) with the goal of better understanding the initial stages of TiSi[sub 2] chemical vapor deposition for circuit metallization and wafer etching with HCl/H[sub 2]. Coadsorption experiments with TiCl[sub 4] and SiH[sub 4] show that under most conditions H[sub 2] and SiCl[sub 2] are the main desorption products, with Ti being left behind on the surface. HCl is a minor product. However, at sufficiently low exposures of either TiCl[sub 4] or SiH[sub 4], the desorption of SiCl[sub 2] or H[sub 2], respectively, is inhibited in favor of HCl. A kinetic model involving formation of an HCl complex at defects has been formulated which explains the results quantitatively. HCl adsorption gives rise to the principal desorption products SiCl[sub 2] and H[sub 2], with HCl as a minor product. The kinetic behavior can also be explained quantitatively with the proposed model. Implications for TiSi[sub 2] growth are discussed with reference to possible growth temperatures and source gas pressures. The mechanism for etching by HCl is further elucidated.

Mendicino, M.A.; Seebauer, E.G. (Univ. of Illinois, Urbana, IL (United States). Dept. of Chemical Engineering)

1993-06-01T23:59:59.000Z

472

Influence of projectile neutron number in the {sup 208}Pb({sup 48}Ti, n){sup 255}Rf and {sup 208}Pb({sup 50}Ti, n){sup 257}Rf reactions  

Science Conference Proceedings (OSTI)

Four isotopes of rutherfordium, {sup 254-257}Rf, were produced by the {sup 208}Pb({sup 48}Ti, xn){sup 256-x}Rf and {sup 208}Pb({sup 50}Ti, xn){sup 258-x}Rf reactions (x=1,2) at the Lawrence Berkeley National Laboratory 88-Inch Cyclotron. Excitation functions were measured for the 1n and 2n exit channels. A maximum likelihood technique, which correctly accounts for the changing cross section at all energies subtended by the targets, was used to fit the 1n data to allow a more direct comparison between excitation functions obtained under different experimental conditions. The maximum 1n cross sections of the {sup 208}Pb({sup 48}Ti, n){sup 255}Rf and {sup 208}Pb({sup 50}Ti, n){sup 257}Rf reactions obtained from fits to the experimental data are 0.38{+-}0.07 nb and 40{+-}5 nb, respectively. Excitation functions for the 2n exit channel were also measured, with maximum cross sections of 0.40{sub -0.17}{sup +0.27} nb for the {sup 48}Ti induced reaction, and 15.7{+-}0.2 nb for the {sup 50}Ti induced reaction. The impact of the two neutron difference in the projectile on the 1n cross section is discussed. The results are compared to the Fusion by Diffusion model developed by Swiatecki, Wilczynska, and Wilczynski.

Dragojevic, I.; Garcia, M. A.; Gates, J. M.; Nelson, S. L.; Nitsche, H. [Department of Chemistry, University of California, Berkeley, California 94720 (United States); Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Gregorich, K. E.; Stavsetra, L.; Sudowe, R. [Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Duellmann, Ch. E. [Department of Chemistry, University of California, Berkeley, California 94720 (United States); Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Abteilung Kernchemie, Gesellschaft fuer Schwerionenforschung mbH, D-64291 Darmstadt (Germany)

2008-08-15T23:59:59.000Z

473

Microstructural characterization and mechanical property of active soldering anodized 6061 Al alloy using Sn-3.5Ag-xTi active solders  

SciTech Connect

Active solders Sn-3.5Ag-xTi varied from x = 0 to 6 wt.% Ti addition were prepared by vacuum arc re-melting and the resultant phase formation and variation of microstructure with titanium concentration were analyzed using X-ray diffraction, optical microscopy and scanning electron microscopy. The Sn-3.5Ag-xTi active solders are used as metallic filler to join with anodized 6061 Al alloy for potential applications of providing a higher heat conduction path. Their joints and mechanical properties were characterized and evaluated in terms of titanium content. The mechanical property of joints was measured by shear testing. The joint strength was very dependent on the titanium content. Solder with a 0.5 wt.% Ti addition can successfully wet and bond to the anodized aluminum oxide layers of Al alloy and posses a shear strength of 16.28 {+-} 0.64 MPa. The maximum bonding strength reached 22.24 {+-} 0.70 MPa at a 3 wt.% Ti addition. Interfacial reaction phase and chemical composition were identified by a transmission electron microscope with energy dispersive spectrometer. Results showed that the Ti element reacts with anodized aluminum oxide to form Al{sub 3}Ti-rich and Al{sub 3}Ti phases at the joint interfaces. - Highlights: Black-Right-Pointing-Pointer Active solder joining of anodized Al alloy needs 0.5 wt.% Ti addition for Sn-3.5Ag. Black-Right-Pointing-Pointer The maximum bonding strength occurs at 3 wt.% Ti addition. Black-Right-Pointing-Pointer The Ti reacts with anodized Al oxide to form Al{sub 3}Ti-rich and Al{sub 3}Ti at joint interface.

Wang, Wei-Lin, E-mail: wangwl77@gmail.com; Tsai, Yi-Chia, E-mail: tij@itri.org.tw

2012-06-15T23:59:59.000Z

474

Lanthanum diffusion in the TiN/LaOx/HfSiO/SiO2/Si stack  

Science Conference Proceedings (OSTI)

Band edge Complementary Metal Oxide Semiconductor (CMOS) devices are obtained by insertion of a thin LaO"x layer between the high-k (HfSiO) and metal gate (TiN). High temperature post deposition anneal induces Lanthanum diffusion across the HfSiO towards ... Keywords: APT, ATR-FTIR, HfSiO, Interfacial dipole, La, Metal/high-k stack, S-XPS, Threshold voltage tuning, TiN, ToF-SIMS

E. Martinez; P. Ronsheim; J. -P. Barnes; N. Rochat; M. Py; M. Hatzistergos; O. Renault; M. Silly; F. Sirotti; F. Bertin; N. Gambacorti

2011-07-01T23:59:59.000Z

475

Removal of heavy metals from aqueous waste streams using surface-modified nanosized TiO{sub 2} photocatalysts.  

DOE Green Energy (OSTI)

Titanium dioxide (TiO{sub 2}) colloidal particles ({approximately}45{angstrom}) whose surfaces were modified with chelating agents for photocatalytic removal of heavy-metal ions and their subsequent reduction to metallic form were investigated. Experiments were performed on nanoparticle TiO{sub 2} colloids derivatized with bidentate and tridentate ligands (thiolactic acid [TLA], cysteine, and alanine [ALA]) in batch mode in a photoreactor with 254nm light. We used catalysts designed and synthesized for selective and efficient removal of Pb and Cu with and without added hole scavenger (methanol). Parallel experiments also have been carried out in the dark to study metal ion adsorption properties. Solutions have been filtered to remove TiO{sub 2}, and metal particulates. Both the native solution and the metal deposited on the nanocrystalline TiO{sub 2} particles were analyzed. Results demonstrate that for the case of lead, the most effective TiO{sub 2} surface modifier was TLA (>99% Pb(II) removed from solution). Experiments performed to study Cn removal using TiO{sub 2} colloids modified with alanine showed that copper ions were effectively removed and reduced to metallic form in the presence of methanol.

Meshkov, N. K.

1998-08-27T23:59:59.000Z

476

Liquid impact erosion mechanism and theoretical impact stress analysis in TiN-coated steam turbine blade materials  

SciTech Connect

Coating of TiN film was done by reactive magnetron sputter ion plating to improve the liquid impact erosion resistance of steam turbine blade materials, 12Cr steel and Stellite 6B, for nuclear power plant application. TiN-coated blade materials were initially deformed with depressions due to plastic deformation of the ductile substrate. The increase in the curvature in the depressions induced stress concentration with increasing number of impacts, followed by circumferential fracture of the TiN coating due to the circular propagation of cracks. The liquid impact erosion resistance of the blade materials was greatly improved by TiN coating done with the optimum ion plating condition. Damage decreased with increasing TiN coating thickness. According to the theoretical analysis of stresses generated by liquid impact, TiN coating alleviated the impact stress of 12Cr steel and Stellite 6B due to stress attenuation and stress wave reactions such as reflection and transmission at the coating-substrate interface.

Lee, M.K.; Kim, W.W.; Rhee, C.K.; Lee, W.J. [Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of). Dept. of Materials Science and Engineering

1999-04-01T23:59:59.000Z

477

L NATJDNAL BNII?GY TiEHMOLOGY LIBOCAYOlY V.0. DEPARTMENT OF  

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

NATJDNAL BNII?GY TiEHMOLOGY LIBOCAYOlY NATJDNAL BNII?GY TiEHMOLOGY LIBOCAYOlY V.0. DEPARTMENT OF Albany, OR .Morgantown, WV s Plllsburgh, PA @ENERGY Januaty 27,201 1 MEMORANDUM FOR MAXI( J. MATARRESE DIRECTOR, OFFICE OF ENVIRONMENT, SECURITY, SAFETY AND HEALTH l c ? FROM: \ DIVISION SUBJECT: Amual Natioilal Enviro~l~neiltal Policy Act (NEPA) Planning Summary for 2011 The attached documents conlprise the 201 1 Allnual NEPA Planning Summary for the National Enexgy TechnologyLaboratory. The infoimation is presented according to the guidance and fonnats provided by DOE'SNEPA office. As required by the Order 451.1B, the Annual NEPA Pla~lning Siimmary will be made available to the public. Please contact nte for any additional info~.mation regarding r\lETL,'s NEPA plans. Distribution: A. Chlgini

478

U.S. DEPARTMENT OF ENERGY EERE PROJECT MA.i\IAGE\tiE~TCE~TER  

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

MA.i\IAGE\tiE~TCE~TER MA.i\IAGE\tiE~TCE~TER NEPA DETERMINATION Page 1 of2 RECIPIENT:Brayton Energy STATE: MA PROJECT TITLE: High-Efficiency Low-Cost Solar Receiver for use in a Supercritical C02 Recompression Cycle Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FOA-0000595 DE-EE0005799 GF0-0005799-{)01 G05799 Based on my review of the information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 451.1A), I have made the foUowing determination: CX, EA, EIS APPENDIX AND NUMBER: Description: A9 Information gathering, analysis, and dissemination Information gathering (including, 'but not limited to, literature surveys, inventories, site vrsits, and audits}, data analysis (including, but not limited to, computer modeling}, document preparation

479

Current-Controlled Negative Differential Resistance due to Joule Heating in TiO2  

E-Print Network (OSTI)

We show that Joule heating causes current-controlled negative differential resistance (CC-NDR) in TiO2 by constructing an analytical model of the voltage-current V(I) characteristic based on polaronic transport for Ohm's Law and Newton's Law of Cooling, and fitting this model to experimental data. This threshold switching is the 'soft breakdown' observed during electroforming of TiO2 and other transition-metal-oxide based memristors, as well as a precursor to 'ON' or 'SET' switching of unipolar memristors from their high to their low resistance states. The shape of the V(I) curve is a sensitive indicator of the nature of the polaronic conduction.

A. S. Alexandrov; A. M. Bratkovsky; B. Bridle; S. E. Savel'ev; D. B. Strukov; R. Stanley Williams

2011-08-15T23:59:59.000Z

480

Spectral Content of 22Na/44Ti Decay Data: Implications for a Solar Influence  

E-Print Network (OSTI)

We report a reanalysis of data on the measured decay rate ratio $^{22}$Na/$^{44}$Ti which were originally published by Norman et al., and interpreted as supporting the conventional hypothesis that nuclear decay rates are constant and not affected by outside influences. We find upon a more detailed analysis of both the amplitude and the phase of the Norman data that they actually favor the presence of an annual variation in $^{22}$Na/$^{44}$Ti, albeit weakly. Moreover, this conclusion holds for a broad range of parameters describing the amplitude and phase of an annual sinusoidal variation in these data. The results from this and related analyses underscore the growing importance of phase considerations in understanding the possible influence of the Sun on nuclear decays. Our conclusions with respect to the phase of the Norman data are consistent with independent analyses of solar neutrino data obtained at Super-Kamiokande-I and the Sudbury Neutrino Observatory (SNO).

Daniel O'Keefe; Brittany L. Morreale; Robert H. Lee; John B. Buncher; Ephraim Fischbach; Tom Gruenwald; Jere H. Jenkins; Daniel Javorsek II; Peter A. Sturrock

2012-12-10T23:59:59.000Z

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481

The influence of temperature on the color of TiO{sub 2}:Cr pigments  

Science Conference Proceedings (OSTI)

TiO{sub 2}:Cr brown pigments were prepared via a polymeric precursor derived from the Pechini method. The pigments were analyzed by infrared spectroscopy, X-ray diffraction, ultraviolet-vis spectroscopy, and colorimetry. The increase of the calcination temperature from 700 to 1000 deg. C led to a decrease in the L* values, corresponding to darkening of the pigments. The pigments obtained in this work are darker than those produced by a solid-state reaction method reported before. The change in the pigment color is due to the anatase-rutile phase transition, which leads to a shift in the charge transfer bond (Ti{sup 4+} {r_reversible} O{sup 2-}) due to a change in the crystal field around the chromophore ions. Moreover, the oxidation state of chromium was observed to change, and this also alters the color of the pigments.

Gomes Vieira, Fagner Ticiano; Silva Melo, Danniely [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil); Jackson Guedes de Lima, Severino [LSR, Departamento de Engenharia Mecanica, Universidade Federal da Paraiba, Joao Pessoa, PB (Brazil); Longo, Elson [CMDMC-LIEC, Instituto de Quimica, Universidade Estadual Paulista, Araraquara, SP (Brazil); Paskocimas, Carlos Alberto [Departamento de Engenharia Mecanica, Universidade Federal do Rio Grande do Norte, Natal, RN (Brazil); Silva Junior, Wilson [Icra Produtos para Ceramica, Mogi Guacu, SP (Brazil); Gouveia de Souza, Antonio [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil); Garcia dos Santos, Ieda Maria [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil)], E-mail: ieda@quimica.ufpb.br

2009-05-06T23:59:59.000Z

482

INTERFACE DISORDER CONTROLLED SUPERCONDUCTIVITY YBa2Cu3O7 / SrTiO3 SUPERLATTICES  

SciTech Connect

We report on the coherent growth of ultrathin YBa2Cu3O7 (YBCO) layers on SrTiO3 (STO) in YBCO/STO superlattices. The termination plane of the STO is TiO2 and the CuO chains are missing at the interface. Disorder (steps) at the STO interface cause alterations of the stacking sequence of the intra-cell YBCO atomic layers. Stacking faults give rise to antiphase boundaries which break the continuity of the CuO2 planes and depress superconductivity. We show that superconductivity is directly controlled by interface disorder outlining the importance of pair breaking and localization by disorder in ultrathin layers.

Garcia-Barriocanal, Javier [Universidad Complutense, Spain; Rivera-Calzada, Alberto [Universidad Complutense, Spain; Sefrioui, Z. [Universidad Complutense, Spain; Arias, D [Universidad Complutense, Spain; Varela del Arco, Maria [ORNL; Leon, C. [Universidad Complutense, Spain; Pennycook, Stephen J [ORNL; Santamaria, J. [Universidad Complutense, Spain

2013-01-01T23:59:59.000Z

483

Improvement of thermoelectric properties for half-Heusler TiNiSn by interstitial Ni defects  

SciTech Connect

We have synthesized off-stoichiometric Ti-Ni-Sn half-Heusler thermoelectrics in order to investigate the relation between randomly distributed defects and thermoelectric properties. A small change in the composition of Ti-Ni-Sn causes a remarkable change in the thermal conductivity. An excess content of Ni realizes a low thermal conductivity of 2.93 W/mK at room temperature while keeping a high power factor. The low thermal conductivity originates in the defects generated by an excess content of Ni. To investigate the detailed defect structure, we have performed first-principles calculations and compared with x ray photoemission spectroscopy measurement. Based on these analyses, we conclude that the excess Ni atoms randomly occupy the vacant sites in the half-Heusler structure, which play as phonon scattering centers, resulting in significant improvement of the figure of merit without any substitutions of expensive heavy elements, such as Zr and Hf.

Hazama, Hirofumi; Matsubara, Masato; Asahi, Ryoji [Toyota Central R and D Labs., Inc., Nagakute, Aichi 480-1192 (Japan); Takeuchi, Tsunehiro [Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan)

2011-09-15T23:59:59.000Z

484

Nanopattern-stimulated superconductor-insulator transition in thin TiN films.  

SciTech Connect

We present the results of the comparative study of transport properties of continuous and nanoperforated TiN films, enabling us to separate the disorder and the geometry effects. Nanopatterning transforms a thin TiN film into an array of superconducting weak links and eo ipso stimulates the disorder- and magnetic-field-driven superconductor-to-insulator transitions, shifting both transitions to a lower degree of microscopic disorder. We observe magnetoresistance oscillations reflecting collective phase-frustration behaviour of the multiconnected superconducting weak link network in a wide range of temperatures. We find that nanopatterning enhances the role of the two-dimensional Coulomb interaction and changes the characteristic energies of the film on length scales significantly larger than the mean free path or the superconducting coherence length.

Baturina, T. I.; Vinokur, V. M.; Mironov, A. Yu.; Chtchelkatchev, N. M.; Nasimov, D. A.; Latyshev, A. V. (Materials Science Division); (A. V. Rzhanov Inst. Semoconductor Physics); (Russian Academy of Sciences)

2011-02-01T23:59:59.000Z

485

Mesoporous TiO2 spheres with a nitridated conducting layer  

Science Conference Proceedings (OSTI)

Nitridated TiO2 mesoporous spheres have been synthesized by hydrothermal processing followed by post-nitridation with NH3. Characterization data reveal a nitridated conducting layer, in addition to a mesoporous, and nanosized building-block morphology resulting in a large surface area. The samples have an average pore size and surface area of, respectively, 10 nm and 87 m2/g. The nitridated TiO2 mesoporous spheres exhibit a high capacity of > 200 mAh/g with good cyclability and high rate capability, as the nitridated conducting layer and favorable morphology of nanosized spheres provides good electrical contact, accommodates cycling induced strain smoothly, and facilitates lithium-ion diffusion.

Yoon, Sukeun [ORNL; Bridges, Craig A [ORNL; Unocic, Raymond R [ORNL; Paranthaman, Mariappan Parans [ORNL

2013-01-01T23:59:59.000Z

486

Enhanced photocatalytic activity of Ag microgrid connected TiO{sub 2} nanocrystalline films  

SciTech Connect

One reason for the high degree of photogenerated carrier recombination was found to be the charge accumulation caused by the uneven reaction area on the photocatalyst surface. The authors connected TiO{sub 2} nanoparticles with conducting Ag microgrid. Obvious photocatalytic activity improvement (81%) over the pure TiO{sub 2} was observed, which is attributed to the electron-hole pairs separation by the metal-semiconductor contact and the large specific area of metal grid, which increased the O{sub 2} absorption and transported the electrons to the sites needed for the deoxidize reactions. This structure lowers the electron accumulation on the particles and improves the utilization ratio of the photoexcited carriers.

Pan Feng; Zhang Junying; Zhang Weiwei; Wang Tianmin; Cai Chao [Center of Materials Physics and Chemistry, Beihang University, Beijing 100083 (China)

2007-03-19T23:59:59.000Z

487

High energy terahertz pulses from organic crystals: DAST and DSTMS pumped at Ti:sapphire wavelength  

E-Print Network (OSTI)

High energy terahertz pulses are produced by optical rectification (OR) in organic crystals DAST and DSTMS by a Ti:sapphire amplifier system centered at 0.8 microns. The simple scheme provides broadband spectra between 1 and 5 THz, when pumped by collimated 60 fs near-infrared pump pulse and it is scalable in energy. Fluence-dependent conversion efficiency and damage threshold are reported as well as optimized OR at visible wavelength.

Monoszlai, B; Jazbinsek, M; Hauri, C P

2013-01-01T23:59:59.000Z

488

Mesoporous TiO2-B Microspheres with Superior Rate Performance for Lithium Ion Batteries  

SciTech Connect

Mesoporous TiO2-B microsperes with a favorable material architecture are designed and synthesized for high power lithium ion batteries. This material, combining the advantages of fast lithium transport with a pseudocapacitive mechanism, adequate electrode-electrolyte contact and compact particle packing in electrode layer, shows superior high-rate charge-discharge capability and long-time cyclability for lithium ion batteries.

Liu, Hansan [ORNL; Bi, Zhonghe [ORNL; Sun, Xiao-Guang [ORNL; Unocic, Raymond R [ORNL; Paranthaman, Mariappan Parans [ORNL; Dai, Sheng [ORNL; Brown, Gilbert M [ORNL

2011-01-01T23:59:59.000Z

489

Synthesis of mesoporous NiO doped TiO{sub 2} submicrosphere via spray hydrolysis  

Science Conference Proceedings (OSTI)

NiO doped TiO{sub 2} submicrosphere have been prepared via spray hydrolysis. The doping concentration has been varied form 2 wt% to 15 wt%. Morphology of the submicrospheres has been investigated using small-angle neutron scattering and scanning electron microscopy. Elemental analysis has been carried out by energy dispersive X-ray analysis which confirms the doping concentrations. The mesopores in submicrospheres possess cylindrical morphology.

Bahadur, J.; Sen, D.; Prakash, J.; Singh, Ripandeep; Paul, B.; Mazumder, S.; Sathiyamoorthy, D. [Solid State Physics Division Bhabha Atomic Research Centre, Mumbai, 400085, India (India); Powder Metallurgy Division Bhabha Atomic Research Centre, Mumbai, 400085 (India); Solid State Physics, Division Bhabha Atomic Research Centre, Mumbai, 400085 (India); Materials Processing Division Bhabha Atomic Research Centre, Mumbai, 400085 (India); Solid State Physics Division Bhabha Atomic Research Centre, Mumbai, 400085 (India); Powder Metallurgy Division Bhabha Atomic Research Centre, Mumbai, 400085 (India)

2012-06-05T23:59:59.000Z

490

Importance of Diffusion in Methanol Photochemistry on TiO2(110)  

Science Conference Proceedings (OSTI)

The photoactivity of methanol on the rutile TiO2(110) surface is shown to depend on the ability of methanol to diffuse on the surface and find sites active for its thermal dissociation to methoxy. Temperature programmed desorption (TPD) results show that the extent of methanol photodecomposition to formaldehyde is negligible on the clean TiO2(110) surface at 100 K due to a scarcity of sites that can convert (photoinactive) methanol to (photoactive) methoxy. The extent of photoactivity at 100 K significantly increases when methanol is coadsorbed with oxygen, however only those molecules able to adsorb near (next to) a coadsorbed oxygen species are active. Preannealing coadsorbed methanol and oxygen to above 200 K prior to UV irradiation results in a significant increase in photoactivity. Scanning tunneling microscopy (STM) images clearly show that the advent of increased photoactivity in TPD correlates with the onset of methanol diffusion along the surface’s Ti4+ rows at ~200 K. These results demonstrate that optimizing thermal processes (such as diffusion or proton transfer reactions) can be critical to maximizing photocatalytic reactivity on TiO2 surfaces. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. Pacific Northwest National Laboratory (PNNL) is a multiprogram national laboratory operated for DOE by Battelle under contract DEAC05-76RL01830. The research was performed using EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory.

Shen, Mingmin; Acharya, Danda P.; Dohnalek, Zdenek; Henderson, Michael A.

2012-12-06T23:59:59.000Z

491

Biomimetic TiO{sub 2} photocatalysis: A model system for pyotosynthesis  

DOE Green Energy (OSTI)

Illumination of semiconductor colloids with light having energy greater than the band gap leads to the formation of electron/hold pairs. Similar to the natural photosynthetic systems, rapid recombination of photogenerated carriers is prevented by removal of one or both carriers from the semiconductor particle. Since the lifetime of charged pairs is very short, only very fast reactions with adsorbed species lead to efficient charge separation. Concurrently, surface adsorption also results in the blocking of the surface states that thermalize photogenerated charges and convert useful energy into heat. Thus, if the surface of the colloid is properly engineered the kinetics of the photochemical reactions and the redox properties of photogenerated charges in the modified colloids may be enhanced for stabilized charge separation, such as in natural photosynthesis. We have shown that adsorption of {alpha}-substituted mercapto-carboxylic acids on small particle TiO{sub 2} colloids results in the bidentate coordination of surface Ti atoms with carboxyl and mercapto groups. This complex is stabilized by the formation of a five membered ring which is the optimal configuration for octahedral coordination of Ti atoms. This surface modification of TiO{sub 2} results in the formation of a charge transfer complex that shifts the optical absorption threshold to the visible region of the spectrum (520 nm). These complexes provide more favorable absorbance properties for solar energy conversion. In this work we are applying electron paramagnetic resonance (EPR) to study the transient species formed by the reactions initiated by charge transfer or colloid photoabsorption.

Thurnauer, M.C.; Rajh, T.; Tiede, D.M.

1996-03-01T23:59:59.000Z

492

Efficient preparation of nanocrystalline anatase TiO{sub 2} and V/TiO{sub 2} thin layers using microwave drying and/or microwave calcination technique  

Science Conference Proceedings (OSTI)

This study has demonstrated that the synthesis of TiO{sub 2} and V/TiO{sub 2} thin layers may be significantly improved and extended if microwave energy is employed during the drying and/or calcination step. Thin nanoparticulate titania layers were prepared via the sol-gel method using titanium n-butoxide as a precursor. As prepared films were then analyzed by means of various characterization techniques (Raman spectroscopy, UV/Vis, AFM, XPS) in order to determine their functional properties. The photocatalytic activities of prepared layers were quantified by the decoloring rate of Rhodamine B. All thermal treatments in microwave field were done in the same manner, by using an IR pyrometer in the microwave oven and monitoring the temperature of the heating. Nevertheless the microwave and thermally prepared materials were different. This in turn may lead to differences in their functional and also photocatalytic properties. - Graphical abstract: This study has demonstrated that the synthesis of thin layers may be improved and extended if microwave energy is employed during the preparation process. Microwave processing has the potential to reduce the time, cost and energy input for the production of thin layers.

Zabova, H., E-mail: zabova@icpf.cas.c [Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, v.v.i., Rozvojova 135, 165 02 Prague 6 (Czech Republic); Sobek, J.; Cirkva, V.; Solcova, O. [Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, v.v.i., Rozvojova 135, 165 02 Prague 6 (Czech Republic); Kment, S. [Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8 (Czech Republic); Hajek, M. [Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, v.v.i., Rozvojova 135, 165 02 Prague 6 (Czech Republic)

2009-12-15T23:59:59.000Z

493

Catalytic Effect of Ti for Hydrogen Cycling in NaAlH4  

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

Effect of Ti for Effect of Ti for Hydrogen Cycling in NaAlH 4 Mei-Yin Chou School of Physics Georgia Institute of Technology (DE-FG02-05ER46229) Acknowledgment: Yan Wang, Roland Stumpf Why is NaAlH 4 interesting? A viable candidate for hydrogen-storage material: High theoretical weight-percent hydrogen content of 5.55% and low cost But (before 1997) Dehydrogenation occurs at high temperature; rehydrogenation is difficult. Bogdanovic and Schwickardi, 1997 Hydrogen can be reversibly absorbed and desorbed from NaAlH 4 under moderate conditions by the addition of catalysts (compounds containing Ti, Zr, etc.) High Hydrogen Contents in Complex Hydrides Hydride wt% Hydride wt% Be(BH 4 ) 2 20.8 Mg(AlH 4 ) 2 9.3 LiBH 4 18.2 Ca(AlH 4 ) 2 7.9 Mg(BH 4 ) 2 14.9 KBH 4 7.5 Ca(BH 4 ) 2 11.6 NaAlH 4 7.5 NaBH4 10.7 Ga(AlH

494

Growth of TiO{sub 2} Thin Film on Various Substrates using RF Magnetron Sputtering  

Science Conference Proceedings (OSTI)

The conductivity of Titanium Dioxide (TiO{sub 2}) thin film fabricated using Radio Frequency (RF) Magnetron Sputtering on Silicon (Si), Indium doped--Tin Oxide (ITO) and microscope glass (M) substrates is presented in this paper. The dependant of thin film thickness and type of substrate been discussed. TiO{sub 2} was deposited using Ti target in Ar+O{sub 2}(45:10) mixture at 250 W for 45, 60, 75, 90, 105 and 120 minute. Resultant thickness varies from 295 nm to 724 nm with deposition rate 6.4 nm/min. On the other hand, resistivity, Rs value for ITO substrate is between 5.72x10{sup -7} to 1.54x10{sup -6{Omega}}.m, Si substrate range is between 3.52x10{sup -6} to 1.76x10{sup -5{Omega}}.m and M substrate range is between 99 to 332 {Omega}.m. The value of resistivity increases with the thickness of the thin film.

Ali, Riyaz Ahmad Mohamed; Nayan, Nafarizal [Microelectronic and Nanotechnology-Shamsuddin Research Center (MiNT-SRC), Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), 86400 Batu Pahat, Johor D.T. (Malaysia)

2011-03-30T23:59:59.000Z

495

Electronic structure of fully epitaxial Co2TiSn thin films  

SciTech Connect

In this article we report on the properties of thin films of the full Heusler compound Co{sub 2}TiSn prepared by DC magnetron co-sputtering. Fully epitaxial, stoichiometric films were obtained by deposition on MgO (001) substrates at substrate temperatures above 600 C. The films are well ordered in the L2{sub 1} structure, and the Curie temperature exceeds slightly the bulk value. They show a significant, isotropic magnetoresistance and the resistivity becomes strongly anomalous in the paramagnetic state. The films are weakly ferrimagnetic, with nearly 1 {mu}{sub B} on the Co atoms, and a small antiparallel Ti moment, in agreement with theoretical expectations. From comparison of x-ray absorption spectra on the Co L{sub 3,2} edges, including circular and linear magnetic dichroism, with ab initio calculations of the x-ray absorption and circular dichroism spectra we infer that the electronic structure of Co{sub 2}TiSn has essentially non-localized character. Spectral features that have not been explained in detail before, are explained here in terms of the final state band structure.

Meinert, Markus; Schmalhorst, Jan; Wulfmeier, Hendrik; Reiss, Gunter; Arenholz, Elke; Graf, Tanja; Felser, Claudia

2010-10-28T23:59:59.000Z

496

Controlling internal barrier in low loss BaTiO3 supercapacitors  

E-Print Network (OSTI)

Supercapacitor behavior has been reported in a number of oxides including reduced BaTiO3 ferroelectric ceramics. These so-called giant properties are however not easily controlled. We show here that the continuous coating of individual BaTiO3 grains by a silica shell in combination with Spark Plasma Sintering is a way to process bulk composites having supercapacitor features with low dielectric losses and temperature stability. The silica shell acts both as an oxidation barrier during the processing and as a dielectric barrier in the final composite. 1 Commercial supercapacitors are using polycrystalline materials in which metallic grains or foils (like tantalum) with extended specific surface are covered by their respective oxides (like tantalum oxide). The resulting barrier layers locate electronic and ionic space charges, increasing the capacitance density. While such barrier layer supercapacitors are of everyday use, 1,2 an improved control of the interfaces barrier in such advanced materials would lead to increased functionalities: higher charge storage ability, lower losses and increased cut-off frequency. We show here that individual coating of ferroelectric BaTiO3 grains by a silica shell followed by a fast sintering in reducing conditions leads to such stable

U-c. Chung; C. Elissalde; S. Mornet; M. Maglione; C. Estournès

2009-01-01T23:59:59.000Z

497

Band gap enhancement of glancing angle deposited TiO{sub 2} nanowire array  

SciTech Connect

Vertically oriented TiO{sub 2} nanowire (NW) arrays were fabricated by glancing angle deposition technique. Field emission-scanning electron microscopy shows the formation of two different diameters {approx}80 nm and {approx}40 nm TiO{sub 2} NW for 120 and 460 rpm azimuthal rotation of the substrate. The x-ray diffraction and Raman scattering depicted the presence of rutile and anatase phase TiO{sub 2}. The overall Raman scattering intensity decreased with nanowire diameter. The role of phonon confinement in anatase and rutile peaks has been discussed. The red (7.9 cm{sup -1} of anatase E{sub g}) and blue (7.4 cm{sup -1} of rutile E{sub g}, 7.8 cm{sup -1} of rutile A{sub 1g}) shifts of Raman frequencies were observed. UV-vis absorption measurements show the main band absorption at 3.42 eV, 3.48 eV, and {approx}3.51 eV for thin film and NW prepared at 120 and 460 rpm, respectively. Three fold enhance photon absorption and intense light emission were observed for NW assembly. The photoluminescence emission from the NW assembly revealed blue shift in main band transition due to quantum confinement in NW structures.

Chinnamuthu, P.; Mondal, A.; Singh, N. K.; Dhar, J. C. [National Institute of Technology Agartala, Department of Electronics and Communication Engineering, Jirania, Tripura (West) 799055 (India); Chattopadhyay, K. K. [Jadavpur University, Department of Physics, Kolkata 700032 (India); Bhattacharya, Sekhar [SSN Research Centre, Tamil Nadu 603110 (India)

2012-09-01T23:59:59.000Z

498

Large Thermoelectric Power Factor in TiS2 Crystal with Nearly Stoichiometric Composition  

E-Print Network (OSTI)

A TiS2 crystal with a layered structure was found to have a large thermoelectric power factor. The in-plane power factor S2 /? at 300 K is 37.1 µW/K2cm with resistivity (?) of 1.7 m?cm and thermopower (S) of-251 µV/K, and this value is comparable to that of the best thermoelectric material, Bi2Te3 alloy. The electrical resistivity shows both metallic and highly anisotropic behaviors, suggesting that the electronic structure of this TiS2 crystal has a quasi-twodimensional nature. The large thermoelectric response can be ascribed to the large density of state just above the Fermi energy and inter-valley scattering. In spite of the large power factor, the figure of merit, ZT of TiS2 is 0.16 at 300 K, because of relatively large thermal conductivity, 68 mW/Kcm. However, most of this value comes from reducible lattice contribution. Thus, ZT can be improved by reducing lattice thermal conductivity, e.g., by introducing a rattling unit into the inter-layer sites.

H. Imai; Y. Shimakawa; Y. Kubo

2008-01-01T23:59:59.000Z

499

High-Temperature Galling Characteristics of Ti-6Al-4V with and without Surface Treatments  

SciTech Connect

Galling is a severe form of surface damage in metals and alloys that typically arises under relatively high normal force, low-sliding speed, and in the absence of effective lubrication. It can lead to macroscopic surface roughening and seizure. The occurrence of galling can be especially problematic in high-temperature applications like diesel engine exhaust gas recirculation system components and adjustable turbocharger vanes, because suitable lubricants may not be available, moisture desorption promotes increased adhesion, and the yield strength of metals decreases with temperature. Oxidation can counteract these effects to some extent by forming lubricative oxide films. Two methods to improve the galling resistance of titanium alloy Ti-6Al-4V were investigated: (a) applying an oxygen diffusion treatment, and (b) creating a metal-matrix composite with TiB2 using a high-intensity infrared heating source. A new, oscillating three-pin-on-flat, high-temperature test method was developed and used to characterize galling behavior relative to a cobalt-based alloy (Stellite 6B ). The magnitude of the oscillating torque, the surface roughness, and observations of surface damage were used as measures of galling resistance. Owing to the formation of lubricative oxide films, the galling resistance of the Ti-alloy at 485o C, even non-treated, was considerably better than it was at room temperature. The IR-formed composite displayed reduced surface damage and lower torque than the substrate titanium alloy.

Blau, Peter Julian [ORNL; ERDMAN III, DONALD L [ORNL; Ohriner, Evan Keith [ORNL; Jolly, Brian C [ORNL

2011-01-01T23:59:59.000Z

500

X-ray photoelectron spectroscopy characterization of the {omega} phase in water quenched Ti-5553 alloy  

SciTech Connect

X-ray photoelectron spectroscopy was used to investigate the {omega} phase in water quenched Ti-5553 alloy with a nominal composition of Ti-5Al-5V-5Mo-3Cr (wt.%), and the {omega} and the {beta} phase were distinguished by deconvoluting the XPS spectra of Al2p, V2p and Cr2p core level regions. In addition, it is found that the binding energy of core level electron of alloying elements shifts comparing with that of pure metals, and the fact was interpreted by charge redistribution model. X-ray photoelectron spectroscopy technique could be used to characterize the nano-scale {omega} phase in {beta} alloys. - Highlights: Black-Right-Pointing-Pointer We characterize the {omega} phase in Ti-5553 alloy by XPS. Black-Right-Pointing-Pointer Binding energy of Al2p, V2p and Cr2p electron are different in the {omega} and {beta} phase. Black-Right-Pointing-Pointer Structural difference leads to the binding energy gap.

Qin, Dongyang, E-mail: qindongyang19831205@126.com [State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xi'an 710049 (China) [State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xi'an 710049 (China); Northwest Institute for Non-ferrous Metal Research, Xi'an 710016 (China); Lu, Yafeng [Northwest Institute for Non-ferrous Metal Research, Xi'an 710016 (China)] [Northwest Institute for Non-ferrous Metal Research, Xi'an 710016 (China); Zhang, Kong; Liu, Qian [The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)] [The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); Zhou, Lian [Northwest Institute for Non-ferrous Metal Research, Xi'an 710016 (China)] [Northwest Institute for Non-ferrous Metal Research, Xi'an 710016 (China)

2012-11-15T23:59:59.000Z