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Note: This page contains sample records for the topic "ideas examine barriers" 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.


1

First CyLab Mobility Research Summit, July 1, 2008. (Martin Griss: The following is only partially edited. Many ideas that need further examination)  

E-Print Network [OSTI]

pleased with the energy, enthusiasm and range of ideas and key issues surfaced, such as our model edited. Many ideas that need further examination) Summary: Our first Mobility Research Summit was a great to be involved. Actions (see below for details) 1. Clarify MRC Business and IP model(s). 2. Initiate community

Sadeh, Norman M.

2

An Examination of Health Providers' HPV Vaccination Behaviors, Perceived Barriers, and Supports: A Four State Analysis.  

E-Print Network [OSTI]

This study's main research asked which combination of predictors, including type of health provider, type of state policy initiative, overall barriers scores, and overall supports scores, is most predictive of HPV vaccination ...

McCave, Emily

2009-12-08T23:59:59.000Z

3

ORANGE. IDEAS. ORANGE. IDEAS.  

E-Print Network [OSTI]

and the energy found on our campus. The Office of Communications and Marketing--with the help of campus, is a place of energy. We're powered by our excellent students, our dedicated faculty and staff, and our Ideas." as the tagline that encapsulates UT's brand. This tagline and its related messages and visual

Grissino-Mayer, Henri D.

4

Examining barriers and facilitators to professional mental health help-seeking in Asian American youth.  

E-Print Network [OSTI]

??The purpose of the present study was to gain a more comprehensive understanding of help-seeking in Asian American youth. The current study examined three major… (more)

Wong, Carol Chieh Yee

2006-01-01T23:59:59.000Z

5

IDEAS - Energy Innovation Portal  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinementEtching. | EMSL Bubblesstructure thebyIDEAS Individuals

6

Ideas Economy: Innovation Forum 2013  

E-Print Network [OSTI]

Ideas Economy: Innovation Forum 2013 Guy Wollaert Senior vice-president, chief technical officer, and innovate fastenough to compete in the 21stcentury? Join us at the Ideas Economy: Innovation Forum

Walker, Matthew P.

7

Idea Generation 3D printing  

E-Print Network [OSTI]

2012 Idea Generation 3D printing at nanoscale Cruising on electrical roads Pushing back against Centre micro and nanoscale 15 Taking 3D printing to the nanoscale 18 Fighting cancer with a "lab

Papadopouli, Maria

8

Green Button App Ideas | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

App Ideas Green Button App Ideas March 4, 2012 - 10:16pm Addthis Green Button App Ideas Matthew Loveless Matthew Loveless Data Integration Specialist, Office of Public Affairs...

9

Create Idea Generation: Harmony versus Stimulation  

E-Print Network [OSTI]

35, 151-167. Creative Idea Generation Wegner, D. M . (1986).959-974. Creative Idea Generation Gruenfeîd, D. H. (1995).316-332. nd Creative Idea Generation Kim, P. H. (1997). When

Nemeth, Charlan Jeanne; Ormiston, Margaret

2007-01-01T23:59:59.000Z

10

Introduction The idea of architecture  

E-Print Network [OSTI]

Introduction The idea of architecture What cognitve behaviors have in common Behavior as movement through problem spaces Tying the content to the architecture Memory, perception, action and cognition Detecting a lack of knowledge Learning The SOAR architecture in review Introduction to SOAR based on

Bremen, UniversitÀt

11

IDEA Clean Energy Application Center  

SciTech Connect (OSTI)

The DOE Clean Energy Application Centers were launched with a goal of focusing on important aspects of our nation’s energy supply including Efficiency, Reliability and Resiliency. Clean Energy solutions based on Combined Heat & Power (CHP), District Energy and Waste Heat Recovery are at the core of ensuring a reliable and efficient energy infrastructure for campuses, communities, and industry and public enterprises across the country. IDEA members which include colleges and universities, hospitals, airports, downtown utilities as well as manufacturers, suppliers and service providers have long-standing expertise in the planning, design, construction and operations of Clean Energy systems. They represent an established base of successful projects and systems at scale and serve important and critical energy loads. They also offer experience, lessons learned and best practices which are of immense value to the sustained growth of the Clean Energy sector. IDEA has been able to leverage the funds from the project award to raise the visibility, improve the understanding and increase deployment CHP, District Energy and Waste Heat Recovery solutions across the regions of our nation, in collaboration with the regional CEAC’s. On August 30, 2012, President Obama signed an Executive Order to accelerate investments in industrial energy efficiency (EE), including CHP and set a national goal of 40 GW of new CHP installation over the next decade IDEA is pleased to have been able to support this Executive Order in a variety of ways including raising awareness of the goal through educational workshops and Conferences and recognizing the installation of large scale CHP and district energy systems A supporting key area of collaboration has involved IDEA providing technical assistance on District Energy/CHP project screenings and feasibility to the CEAC’s for multi building, multi-use projects. The award was instrumental in the development of a first-order screening/feasibility tool for these types of community energy projects. The Excel based tool incorporates hourly climate based building loads data to arrive at the composite energy demand for the district and compares the Net Present Value (NPV) of the costs of CHP/DE alternatives. This tool has been used to provide assistance to several projects in the Northeast, Mid-Atlantic, Intermountain and Pacific Regions. The tool was disseminated to the CEACs and supplemented by a Training Webinar and a How to Guide IDEA produced a US Community Energy Development Guide to support mayors, planners, community leaders, real estate developers and economic development officials who are interested in planning more sustainable urban energy infrastructure, creating community energy master plans and implementing CHP/ District Energy systems in cities, communities and towns. IDEA has collected industry data and provided a comprehensive data set containing information on District Energy installations in the US. District energy systems are present in 49 states and the District of Columbia. Of the 597 systems 55% were DE alone while the remainder was some combination of CHP, district heating, and district cooling. District energy systems that do not currently involve electric generation are strong near-term candidates for the adoption of CHP due to the magnitude of their aggregated thermal load. This data has helped inform specific and targeted initiatives including technical assistance provided by the CEAC’s for EPA’s Boiler MACT Compliance by large District Heating System boilers. These outcomes have been greatly enabled by the close coordination and collaboration with DOE CEAC leadership and with the eight regional US DOE Clean Energy Application Centers and the award’s incremental funding has allowed IDEA to leverage our resources to be an effective champion for Clean Energy.

Thornton, Robert

2013-09-30T23:59:59.000Z

12

FEM A Good Ideas Book  

Broader source: Energy.gov (indexed) [DOE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA5 &of Energy memoCity ofAugust 31,April 9,FEFEM A Good Ideas

13

Puncture detecting barrier materials  

DOE Patents [OSTI]

A method and apparatus for continuous real-time monitoring of the integrity of protective barrier materials, particularly protective barriers against toxic, radioactive and biologically hazardous materials has been developed. Conductivity, resistivity or capacitance between conductive layers in the multilayer protective materials is measured by using leads connected to electrically conductive layers in the protective barrier material. The measured conductivity, resistivity or capacitance significantly changes upon a physical breach of the protective barrier material. 4 figs.

Hermes, R.E.; Ramsey, D.R.; Stampfer, J.F.; Macdonald, J.M.

1998-03-31T23:59:59.000Z

14

Fundamental Ideas of Mathematics Instructor: Sam Smith  

E-Print Network [OSTI]

Math 225 Fundamental Ideas of Mathematics Syllabus Fall 2013 Instructor: Sam Smith Office: Barbelin 228, 610-660-1559, smith@sju.edu Office Hours: Tue, Thur 12:00-2:00 or by appointment. Text: Chartrand

Smith, Sam

15

Hydrogen permeation resistant barrier  

DOE Patents [OSTI]

A hydrogen permeation resistant barrier is formed by diffusing aluminum into an iron or nickel alloy and forming an intermetallic aluminide layer.

McGuire, Joseph C. (Richland, WA); Brehm, William F. (Richland, WA)

1982-01-01T23:59:59.000Z

16

Retractable barrier strip  

DOE Patents [OSTI]

A portable barrier strip having retractable tire-puncture spikes for puncturing a vehicle tire. The tire-puncture spikes have an armed position for puncturing a tire and a retracted position for not puncturing a tire. The strip comprises a plurality of barrier blocks having the tire-puncture spikes removably disposed in a shaft that is rotatably disposed in each barrier block. The plurality of barrier blocks hare hingedly interconnected by complementary hinges integrally formed into the side of each barrier block which allow the strip to be rolled for easy storage and retrieval, but which prevent irregular or back bending of the strip. The shafts of adjacent barrier blocks are pivotally interconnected via a double hinged universal joint to accommodate irregularities in a roadway surface and to transmit torsional motion of the shaft from block to block. A single flexshaft cable is connected to the shaft of an end block to allow a user to selectively cause the shafts of a plurality of adjacently connected barrier blocks to rotate the tire-puncture spikes to the armed position for puncturing a vehicle tire, and to the retracted position for not puncturing the tire. The flexshaft is provided with a resiliently biased retracting mechanism, and a release latch for allowing the spikes to be quickly retracted after the intended vehicle tire is punctured.

Marts, Donna J. (Idaho Falls, ID); Barker, Stacey G. (Idaho Falls, ID); Wowczuk, Andrew (Wheeling, WV); Vellenoweth, Thomas E. (Wheeling, WV)

2002-01-01T23:59:59.000Z

17

Recycler barrier RF buckets  

SciTech Connect (OSTI)

The Recycler Ring at Fermilab uses a barrier rf systems for all of its rf manipulations. In this paper, I will give an overview of historical perspective on barrier rf system, the longitudinal beam dynamics issues, aspects of rf linearization to produce long flat bunches and methods used for emittance measurements of the beam in the RR barrier rf buckets. Current rf manipulation schemes used for antiproton beam stacking and longitudinal momentum mining of the RR beam for the Tevatron collider operation are explained along with their importance in spectacular success of the Tevatron luminosity performance.

Bhat, C.M.; /Fermilab

2011-03-01T23:59:59.000Z

18

Climate Entrepreneurship ...turning an idea into business  

E-Print Network [OSTI]

Climate Entrepreneurship ...turning an idea into business Dr. Anaïs Sägesser, Director Climate-KIC Switzerland Dr. Regina Vogel, Education Lead Climate-KIC Switzerland Akitaka Fujii, Executive Assistant Climate-KIC Switzerland 20 October 2014 #12;Climate-KIC 2 #12;Climate-KIC 3 «... 1968 you went

Fischlin, Andreas

19

Turning ideas into reality Roberto Cipolla  

E-Print Network [OSTI]

;Magic Mirrors #12;Qualities of an engineer 1. Analytical and technical skills 2. Creative and thinking · Logical thinking #12;Qualities of an engineer 2. Creativity and thinking skills: · Good problemTurning ideas into reality Roberto Cipolla Department of Engineering http

Cipolla, Roberto

20

Energy Systems Integration A Convergence of Ideas  

E-Print Network [OSTI]

Energy Systems Integration A Convergence of Ideas July 2012 Ben Kroposki, Bobi Garrett, Stuart Macmillan, Brent Rice, and Connie Komomua National Renewable Energy Laboratory Mark O'Malley University of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy

Note: This page contains sample records for the topic "ideas examine barriers" 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

Mechanical Engineering Turning Ideas into Reality  

E-Print Network [OSTI]

Mechanical Engineering Turning Ideas into Reality EnErgy Environ m Ent HEaltH matEria ls transpo rt u r s e s ? Home The Department Overview The Courses Mechanical Engineering (MEng / BEng) Mechanical Engineering With International Study (MEng / BEng) Aero-Mechanical Engineering (MEng / BEng) #12;tHE DEpartm

Mottram, Nigel

22

The IIT Innovators Fueling Big Ideas  

E-Print Network [OSTI]

Making things work. The IIT Innovators Fueling Big Ideas Winter 2012 John P. Calamos sr. Bold Thinking The PlanT How the Zero-Waste System Works researCh Neutron Detection, Dinosaur Collagen, Big Data in our next wave of innovators and leaders, some of whom are featured in this issue. Our students have

Saniie, Jafar

23

Mechanical & Aerospace Engineering Turning Ideas into Reality  

E-Print Network [OSTI]

Mechanical & Aerospace Engineering Turning Ideas into Reality EnErgy Environ m Ent HEaltH mat Overview The Courses Mechanical Engineering (MEng / BEng) Mechanical Engineering With International Study (MEng / BEng) Aero-Mechanical Engineering (MEng / BEng) E N T r y F A Q S A p p l y i n g C a m p u

Mottram, Nigel

24

Author: 17 years old Idea of essay  

E-Print Network [OSTI]

work at the JZD, enviroment and importance of this topics. Places Moravian Karst is the biggest karst with every kilometre of the way. I had no idea what will be the impact of this to me. Will it be a good one

Borissova, Daniela

25

A Bright Idea: New Efficiency Standards for Incandescent and...  

Broader source: Energy.gov (indexed) [DOE]

A Bright Idea: New Efficiency Standards for Incandescent and Fluorescent Lights A Bright Idea: New Efficiency Standards for Incandescent and Fluorescent Lights July 21, 2009 -...

26

Los Angeles County's Green Idea House Achieves Efficient Goals...  

Broader source: Energy.gov (indexed) [DOE]

Los Angeles County's Green Idea House Achieves Efficient Goals Los Angeles County's Green Idea House Achieves Efficient Goals Photo of an energy-efficient home with modern...

27

Retractable barrier strip  

DOE Patents [OSTI]

A portable barrier strip is described having retractable tire-puncture means for puncturing a vehicle tire. The tire-puncture means, such as spikes, have an armed position for puncturing a tire and a retracted position for not puncturing a tire. The strip comprises a plurality of barrier blocks having the tire-puncture means removably disposed in a shaft that is rotatably disposed in each barrier block. The shaft removably and pivotally interconnects the plurality of barrier blocks. Actuation cables cause the shaft to rotate the tire-puncture means to the armed position for puncturing a vehicle tire and to the retracted position for not puncturing the tire. Each tire-puncture means is received in a hollow-bed portion of its respective barrier block when in the retracted position. The barrier strip rests in its deployed position and substantially motionless as a tire rolls thereon and over. The strip is rolled up for retrieval, portability, and storage purposes, and extended and unrolled in its deployed position for use. 13 figs.

Marts, D.J.; Barker, S.G.; McQueen, M.A.

1996-04-16T23:59:59.000Z

28

Vacuum barrier for excimer lasers  

DOE Patents [OSTI]

A barrier for separating the vacuum area of a diode from the pressurized gas area of an excimer laser. The barrier is a composite material comprising layers of a metal such as copper, along with layers of polyimide, and a matrix of graphite fiber yarns impregnated with epoxy. The barrier is stronger than conventional foil barriers, and allows greater electron throughput. 3 figs.

Shurter, R.P.

1992-09-15T23:59:59.000Z

29

Method of installing subsurface barrier  

DOE Patents [OSTI]

Systems, components, and methods relating to subterranean containment barriers. Laterally adjacent tubular casings having male interlock structures and multiple female interlock structures defining recesses for receiving a male interlock structure are used to create subterranean barriers for containing and treating buried waste and its effluents. The multiple female interlock structures enable the barriers to be varied around subsurface objects and to form barrier sidewalls. The barrier may be used for treating and monitoring a zone of interest.

Nickelson, Reva A. (Shelley, ID); Richardson, John G. (Idaho Falls, ID); Kostelnik, Kevin M. (Idaho Falls, ID); Sloan, Paul A. (Rigby, ID)

2007-10-09T23:59:59.000Z

30

Implications of Theoretical Ideas Regarding Cold Fusion  

E-Print Network [OSTI]

A lot of theoretical ideas have been floated to explain the so called cold fusion phenomenon. I look at a large subset of these and study further physical implications of the concepts involved. I suggest that these can be tested by other independent physical means. Because of the significance of these the experimentalists are urged to look for these signatures. The results in turn will be important for a better understanding and hence control of the cold fusion phenomenon.

Afsar Abbas

1995-03-29T23:59:59.000Z

31

Micro heat barrier  

DOE Patents [OSTI]

A highly effective, micron-scale micro heat barrier structure and process for manufacturing a micro heat barrier based on semiconductor and/or MEMS fabrication techniques. The micro heat barrier has an array of non-metallic, freestanding microsupports with a height less than 100 microns, attached to a substrate. An infrared reflective membrane (e.g., 1 micron gold) can be supported by the array of microsupports to provide radiation shielding. The micro heat barrier can be evacuated to eliminate gas phase heat conduction and convection. Semi-isotropic, reactive ion plasma etching can be used to create a microspike having a cusp-like shape with a sharp, pointed tip (<0.1 micron), to minimize the tip's contact area. A heat source can be placed directly on the microspikes. The micro heat barrier can have an apparent thermal conductivity in the range of 10.sup.-6 to 10.sup.-7 W/m-K. Multiple layers of reflective membranes can be used to increase thermal resistance.

Marshall, Albert C.; Kravitz, Stanley H.; Tigges, Chris P.; Vawter, Gregory A.

2003-08-12T23:59:59.000Z

32

IPR Barriers in Collaboration between University and Engineering Industry in Sweden.  

E-Print Network [OSTI]

?? This thesis examines the barriers, especially intellectual property rights concerned that inhibit industry academia collaboration. By analyzing Swedish firms in the engineering industry, I… (more)

Huang, Wenting

2011-01-01T23:59:59.000Z

33

E-Print Network 3.0 - actively regulated barrier Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

-01-07 Abstract: This paper examines the major barriers to the deployment of geothermal, small hydro ... Source: Ecole Polytechnique, Centre de mathmatiques Collection:...

34

Near-Surface Engineered Environmental Barrier Integrity  

SciTech Connect (OSTI)

The INEEL Environmental Systems Research and Analysis (ESRA) program has launched a new R and D project on Near-Surface Engineered Environmental Barrier Integrity to increase knowledge and capabilities for using engineering and ecological components to improve the integrity of near-surface barriers used to confine contaminants from the public and the environment. The knowledge gained and the capabilities built will help verify the adequacy of past remedial decisions and enable improved solutions for future cleanup decisions. The research is planned to (a) improve the knowledge of degradation mechanisms (weathering, biological, geological, chemical, radiological, and catastrophic) in times shorter than service life, (b) improve modeling of barrier degradation dynamics, (c) develop sensor systems to identify degradation prior to failure, and (d) provide a better basis for developing and testing of new barrier systems to increase reliability and reduce the risk of failure. Our project combine s selected exploratory studies (benchtop and field scale), coupled effects accelerated aging testing and the meso-scale, testing of new monitoring concepts, and modeling of dynamic systems. The performance of evapo-transpiration, capillary, and grout-based barriers will be examined.

Piet, S.J.; Breckenridge, R.P.

2002-05-15T23:59:59.000Z

35

Near-Surface Engineered Environmental Barrier Integrity  

SciTech Connect (OSTI)

The INEEL Environmental Systems Research and Analysis (ESRA) program has launched a new R&D project on Near-Surface Engineered Environmental Barrier Integrity to increase knowledge and capabilities for using engineering and ecological components to improve the integrity of near-surface barriers used to confine contaminants from the public and the environment. The knowledge gained and the capabilities built will help verify the adequacy of past remedial decisions and enable improved solutions for future cleanup decisions. The research is planned to (a) improve the knowledge of degradation mechanisms (weathering, biological, geological, chemical, radiological, and catastrophic) in times shorter than service life, (b) improve modeling of barrier degradation dynamics, (c) develop sensor systems to identify degradation prior to failure, and (d) provide a better basis for developing and testing of new barrier systems to increase reliability and reduce the risk of failure. Our project combines selected exploratory studies (benchtop and field scale), coupled effects accelerated aging testing and the meso-scale, testing of new monitoring concepts, and modeling of dynamic systems. The performance of evapo- transpiration, capillary, and grout-based barriers will be examined.

Piet, Steven James; Breckenridge, Robert Paul; Beller, John Michael; Geesey, Gill Gregroy; Glenn, David Frankie; Jacobson, Jacob Jordan; Martian, Pete; Matthern, Gretchen Elise; Mattson, Earl Douglas; Porro, Indrek; Southworth, Finis Hio; Steffler, Eric Darwin; Stormberg, Angelica Isabel; Stormberg, Gregory John; Versteeg, Roelof Jan; White, Gregory J

2002-08-01T23:59:59.000Z

36

Hydrogen Permeation Barrier Coatings  

SciTech Connect (OSTI)

Gaseous hydrogen, H2, has many physical properties that allow it to move rapidly into and through materials, which causes problems in keeping hydrogen from materials that are sensitive to hydrogen-induced degradation. Hydrogen molecules are the smallest diatomic molecules, with a molecular radius of about 37 x 10-12 m and the hydrogen atom is smaller still. Since it is small and light it is easily transported within materials by diffusion processes. The process of hydrogen entering and transporting through a materials is generally known as permeation and this section reviews the development of hydrogen permeation barriers and barrier coatings for the upcoming hydrogen economy.

Henager, Charles H.

2008-01-01T23:59:59.000Z

37

Thermal barrier coating  

DOE Patents [OSTI]

A thermal barrier coating for hot gas path components of a combustion turbine based on a zirconia-scandia system. A layer of zirconium scandate having the hexagonal Zr.sub.3 Sc.sub.4 O.sub.12 structure is formed directly on a superalloy substrate or on a bond coat formed on the substrate.

Bowker, Jeffrey Charles (Gibsonia, PA); Sabol, Stephen M. (Orlando, FL); Goedjen, John G. (Oviedo, FL)

2001-01-01T23:59:59.000Z

38

The Power of a Good Idea: Quantitative Modeling of the Spread of Ideas from Epidemiological Models  

SciTech Connect (OSTI)

The population dynamics underlying the diffusion of ideas hold many qualitative similarities to those involved in the spread of infections. In spite of much suggestive evidence this analogy is hardly ever quantified in useful ways. The standard benefit of modeling epidemics is the ability to estimate quantitatively population average parameters, such as interpersonal contact rates, incubation times, duration of infectious periods, etc. In most cases such quantities generalize naturally to the spread of ideas and provide a simple means of quantifying sociological and behavioral patterns. Here we apply several paradigmatic models of epidemics to empirical data on the advent and spread of Feynman diagrams through the theoretical physics communities of the USA, Japan, and the USSR in the period immediately after World War II. This test case has the advantage of having been studied historically in great detail, which allows validation of our results. We estimate the effectiveness of adoption of the idea in the three communities and find values for parameters reflecting both intentional social organization and long lifetimes for the idea. These features are probably general characteristics of the spread of ideas, but not of common epidemics.

Bettencourt, L. M. A. (LANL); Cintron-Arias, A. (Cornell University); Kaiser, D. I. (MIT); Castillo-Chavez, C. (Arizona State University)

2005-05-05T23:59:59.000Z

39

Geophysical characterization of subsurface barriers  

SciTech Connect (OSTI)

An option for controlling contaminant migration from plumes and buried waste sites is to construct a subsurface barrier of a low-permeability material. The successful application of subsurface barriers requires processes to verify the emplacement and effectiveness of barrier and to monitor the performance of a barrier after emplacement. Non destructive and remote sensing techniques, such as geophysical methods, are possible technologies to address these needs. The changes in mechanical, hydrologic and chemical properties associated with the emplacement of an engineered barrier will affect geophysical properties such a seismic velocity, electrical conductivity, and dielectric constant. Also, the barrier, once emplaced and interacting with the in situ geologic system, may affect the paths along which electrical current flows in the subsurface. These changes in properties and processes facilitate the detection and monitoring of the barrier. The approaches to characterizing and monitoring engineered barriers can be divided between (1) methods that directly image the barrier using the contrasts in physical properties between the barrier and the host soil or rock and (2) methods that reflect flow processes around or through the barrier. For example, seismic methods that delineate the changes in density and stiffness associated with the barrier represents a direct imaging method. Electrical self potential methods and flow probes based on heat flow methods represent techniques that can delineate the flow path or flow processes around and through a barrier.

Borns, D.J.

1995-08-01T23:59:59.000Z

40

Multilayer thermal barrier coating systems  

DOE Patents [OSTI]

The present invention generally describes multilayer thermal barrier coating systems and methods of making the multilayer thermal barrier coating systems. The thermal barrier coating systems comprise a first ceramic layer, a second ceramic layer, a thermally grown oxide layer, a metallic bond coating layer and a substrate. The thermal barrier coating systems have improved high temperature thermal and chemical stability for use in gas turbine applications.

Vance, Steven J. (Orlando, FL); Goedjen, John G. (Oviedo, FL); Sabol, Stephen M. (Orlando, FL); Sloan, Kelly M. (Longwood, FL)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

Underground waste barrier structure  

DOE Patents [OSTI]

Disclosed is an underground waste barrier structure that consists of waste material, a first container formed of activated carbonaceous material enclosing the waste material, a second container formed of zeolite enclosing the first container, and clay covering the second container. The underground waste barrier structure is constructed by forming a recessed area within the earth, lining the recessed area with a layer of clay, lining the clay with a layer of zeolite, lining the zeolite with a layer of activated carbonaceous material, placing the waste material within the lined recessed area, forming a ceiling over the waste material of a layer of activated carbonaceous material, a layer of zeolite, and a layer of clay, the layers in the ceiling cojoining with the respective layers forming the walls of the structure, and finally, covering the ceiling with earth.

Saha, Anuj J. (Hamburg, NY); Grant, David C. (Gibsonia, PA)

1988-01-01T23:59:59.000Z

42

Barrier breaching device  

DOE Patents [OSTI]

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, Charles A. (Tracy, CA)

1985-01-01T23:59:59.000Z

43

Barrier breaching device  

DOE Patents [OSTI]

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, C.A.

1983-06-01T23:59:59.000Z

44

Performance characteristics of a self-sealing/self-healing barrier  

SciTech Connect (OSTI)

Environment Canada and the Netherlands Energy Research Foundation are co-developers of a patented Self-Sealing/Self-Healing (SS/SH) Barrier system for containment of wastes which is licensed to Water Technology International Corporation. The SS/SH Barrier is intended for use as either a liner or cover for landfills, contaminated sites, secondary containment areas, etc., in the industrial, chemical, mining and municipal sectors, and also as a barrier to hydraulic flow for the transportation and construction industry. The SS/SH Barrier`s most significant feature is its capability for self-repair in the event of a breach. By contrast, conventional barrier systems, such as clay, geomembrane, or geosynthetic clay liners can not be repaired without laborious excavation and reconstruction. Laboratory investigations have shown that the SS/SH Barrier concept will function with a variety of reactive materials. Self-Sealing/Self-Healing Barriers are cost competitive and consistently exhibit hydraulic conductivities ranging from 10{sup -9} to 10{sup -13} m/s, which decrease with time. These measurements meet or exceed the recommended hydraulic conductivity required by EPA for clay liners (<1x10{sup -9} m/s) used in landfills and hazardous waste sites. Results of mineralogical examination of the seal, diffusion testing, hydraulic conductivity measurement, and durability testing, including wet/dry, freeze/thaw cycling and leachate compatibility are also presented.

McGregor, R.G. [Water Technology International Corp., Burlington, Ontario (Canada); [Canadian Clean Technology Centre, Burlington, Ontario (Canada); Stegemann, J.A. [Canadian Clean Technology Centre, Burlington, Ontario (Canada)

1997-12-31T23:59:59.000Z

45

Performing a local barrier operation  

DOE Patents [OSTI]

Performing a local barrier operation with parallel tasks executing on a compute node including, for each task: retrieving a present value of a counter; calculating, in dependence upon the present value of the counter and a total number of tasks performing the local barrier operation, a base value of the counter, the base value representing the counter's value prior to any task joining the local barrier; calculating, in dependence upon the base value and the total number of tasks performing the local barrier operation, a target value, the target value representing the counter's value when all tasks have joined the local barrier; joining the local barrier, including atomically incrementing the value of the counter; and repetitively, until the present value of the counter is no less than the target value of the counter: retrieving the present value of the counter and determining whether the present value equals the target value.

Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

2014-03-04T23:59:59.000Z

46

Performing a local barrier operation  

DOE Patents [OSTI]

Performing a local barrier operation with parallel tasks executing on a compute node including, for each task: retrieving a present value of a counter; calculating, in dependence upon the present value of the counter and a total number of tasks performing the local barrier operation, a base value, the base value representing the counter's value prior to any task joining the local barrier; calculating, in dependence upon the base value and the total number of tasks performing the local barrier operation, a target value of the counter, the target value representing the counter's value when all tasks have joined the local barrier; joining the local barrier, including atomically incrementing the value of the counter; and repetitively, until the present value of the counter is no less than the target value of the counter: retrieving the present value of the counter and determining whether the present value equals the target value.

Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

2014-03-04T23:59:59.000Z

47

New Ideas for Seeding Your Solar Marketplace Workshop Panel Presentati...  

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

Panel Presentations New Ideas for Seeding Your Solar Marketplace Workshop Panel Presentations Download the speaker presentations from the 2014 SunShot Grand Challenge Summit and...

48

MICROLOCAL ANALYSIS METHODS One of the fundamental ideas ...  

E-Print Network [OSTI]

Definition. The basic idea goes back to the properties of the Fourier transform. ... This definition is independent of ..... They lie on the energy surface ˜H = const.

2015-03-23T23:59:59.000Z

49

Thermal barrier coatings  

DOE Patents [OSTI]

This disclosure addresses the issue of providing a metallic-ceramic overlay coating that potentially serves as an interface or bond coat layer to provide enhanced oxidation resistance to the underlying superalloy substrate via the formation of a diffusion barrier regime within the supporting base material. Furthermore, the metallic-ceramic coating is expected to limit the growth of a continuous thermally grown oxide (TGO) layer that has been primarily considered to be the principal cause for failure of existing TBC systems. Compositional compatibility of the metallic-ceramic with traditional yttria-stabilized zirconia (YSZ) top coats is provided to further limit debond or spallation of the coating during operational use. A metallic-ceramic architecture is disclosed wherein enhanced oxidation resistance is imparted to the surface of nickel-based superalloy or single crystal metal substrate, with simultaneous integration of the yttria stabilized zirconia (YSZ) within the metallic-ceramic overlayer.

Alvin, Mary Anne (Pittsburg, PA)

2010-06-22T23:59:59.000Z

50

President's Teaching Scholar Program Big Ideas Program: An Experiment  

E-Print Network [OSTI]

(if there is interest in doing so.) Phase I of our process is taking stock. What germs of Big Ideas to try to push the idea process at this year's Fall retreat, and thereafter. We'll take some time are we all carrying around? Are their past or current projects we can build on? We'll do this stock

Colorado at Boulder, University of

51

5 The Transformation of Policy Ideas: A Challenge for  

E-Print Network [OSTI]

103 5 The Transformation of Policy Ideas: A Challenge for Development Research Laurent Goetschel1 by Legro (2000) and exploring the conditions for the transformation of these col- lective policy ideas their expectations on transformation knowledge, from which they expect the greatest added value. While

Richner, Heinz

52

Use of Polygraph Examinations  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Provides policy on the voluntary use of polygraph examinations by the Department of Energy (DOE), listing the circumstances under which these examinations may be used, establishing controls for their use and for the prevention of unwarranted intrusion into the privacy of individuals, and defining the population subject to the administration of polygraph examinations.

1999-03-17T23:59:59.000Z

53

Automated Impedance Tomography for Monitoring Permeable Reactive Barrier Health  

SciTech Connect (OSTI)

The objective of this research was the development of an autonomous, automated electrical geophysical monitoring system which allows for near real-time assessment of Permeable Reactive Barrier (PRB) health and aging and which provides this assessment through a web-based interface to site operators, owners and regulatory agencies. Field studies were performed at four existing PRB sites; (1) a uranium tailing site near Monticello, Utah, (2) the DOE complex at Kansas City, Missouri, (3) the Denver Federal Center in Denver, Colorado and (4) the Asarco Smelter site in East Helena, Montana. Preliminary surface data over the PRB sites were collected (in December, 2005). After the initial round of data collection, the plan was modified to include studies inside the barriers in order to better understand barrier aging processes. In September 2006 an autonomous data collection system was designed and installed at the EPA PRB and the electrode setups in the barrier were revised and three new vertical electrode arrays were placed in dedicated boreholes which were in direct contact with the PRB material. Final data were collected at the Kansas City, Denver and Monticello, Utah PRB sites in the fall of 2007. At the Asarco Smelter site in East Helena, Montana, nearly continuous data was collected by the autonomous monitoring system from June 2006 to November 2007. This data provided us with a picture of the evolution of the barrier, enabling us to examine barrier changes more precisely and determine whether these changes are due to installation issues or are normal barrier aging. Two rounds of laboratory experiments were carried out during the project. We conducted column experiments to investigate the effect of mineralogy on the electrical signatures resulting from iron corrosion and mineral precipitation in zero valent iron (ZVI) columns. In the second round of laboratory experiments we observed the electrical response from simulation of actual field PRBs at two sites: the Kansas City barrier and the East Helena barrier. As these sites are also used for our field monitoring efforts, this allowed for a comparison between field and laboratory. In column studies with high concentrations of calcium and carbonate/bicarbonate, we observed that the increase of electrical resistivity and decrease of polarization magnitude is significant and is mainly controlled by the precipitation of calcium carbonates. In general, the electrical properties of all of the barriers studied follow a pattern. New barriers are fairly resistive with in-situ conductivity only a few times background (outside the barrier) values. Older barriers get increasingly conductive, with failed barriers showing values of over 100 S/m. The induced polarization response is more complicated. Chargeability values increase over time for young barriers, are largest for healthy barriers in the middle of their lifespan, and decrease as the barrier ages These results suggest that normalized IP appears promising as a measure of barrier age.

LaBrecque, D J; Adkins, P L

2009-07-02T23:59:59.000Z

54

TMI-2 core examination  

SciTech Connect (OSTI)

The examination of the damaged core at the Three Mile Island Unit 2 (TMI-2) reactor is structured to address the following safety issues: fission product release, transport, and deposition; core coolability; containment integrity; and recriticality during severe accidents; as well as zircaloy cladding ballooning and oxidation during so-called design basis accidents. The numbers of TMI-2 components or samples to be examined, the priority of each examination, the safety issue addressed by each examination, the principal examination techniques to be employed, and the data to be obtained and the principal uses of the data are discussed in this paper.

Hobbins, R.R.; MacDonald, P.E.; Owen, D.E.

1983-01-01T23:59:59.000Z

55

Vehicle barrier with access delay  

DOE Patents [OSTI]

An access delay vehicle barrier for stopping unauthorized entry into secure areas by a vehicle ramming attack includes access delay features for preventing and/or delaying an adversary from defeating or compromising the barrier. A horizontally deployed barrier member can include an exterior steel casing, an interior steel reinforcing member and access delay members disposed within the casing and between the casing and the interior reinforcing member. Access delay members can include wooden structural lumber, concrete and/or polymeric members that in combination with the exterior casing and interior reinforcing member act cooperatively to impair an adversarial attach by thermal, mechanical and/or explosive tools.

Swahlan, David J; Wilke, Jason

2013-09-03T23:59:59.000Z

56

Global interrupt and barrier networks  

DOE Patents [OSTI]

A system and method for generating global asynchronous signals in a computing structure. Particularly, a global interrupt and barrier network is implemented that implements logic for generating global interrupt and barrier signals for controlling global asynchronous operations performed by processing elements at selected processing nodes of a computing structure in accordance with a processing algorithm; and includes the physical interconnecting of the processing nodes for communicating the global interrupt and barrier signals to the elements via low-latency paths. The global asynchronous signals respectively initiate interrupt and barrier operations at the processing nodes at times selected for optimizing performance of the processing algorithms. In one embodiment, the global interrupt and barrier network is implemented in a scalable, massively parallel supercomputing device structure comprising a plurality of processing nodes interconnected by multiple independent networks, with each node including one or more processing elements for performing computation or communication activity as required when performing parallel algorithm operations. One multiple independent network includes a global tree network for enabling high-speed global tree communications among global tree network nodes or sub-trees thereof. The global interrupt and barrier network may operate in parallel with the global tree network for providing global asynchronous sideband signals.

Blumrich, Matthias A. (Ridgefield, CT); Chen, Dong (Croton-On-Hudson, NY); Coteus, Paul W. (Yorktown Heights, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Kopcsay, Gerard V. (Yorktown Heights, NY); Steinmacher-Burow, Burkhard D. (Mount Kisco, NY); Takken, Todd E. (Mount Kisco, NY)

2008-10-28T23:59:59.000Z

57

The Fusion of Ideas: An Interview with Margaret Walker Alexander  

E-Print Network [OSTI]

Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. The fusion of ideas: An interview with Margaret Walker Alex African American Review; Summer 1993; 27, 2; ProQuest Research Library pg. 279...

Graham, Maryemma

1993-06-01T23:59:59.000Z

58

Cognitive Effects of Physical Models in Engineering Idea Generation  

E-Print Network [OSTI]

of controlled lab studies and qualitative studies is adopted to achieve said goal. The results from the controlled studies show that physical models supplement designers’ erroneous mental models and help them to come up with more ideas satisfying the problem...

Cherickal Viswanathan, Vimal 1983-

2012-08-17T23:59:59.000Z

59

Big and Small Ideas: How to Lower Solar Financing Costs  

Broader source: Energy.gov [DOE]

DOE hosted the "Big & Small Ideas: How to Lower Solar Financing Costs" breakout session during the SunShot Grand Challenge Summit and Technology Forum. This session explored a range of...

60

People's Physics Book Ch 8-1 The Big Idea  

E-Print Network [OSTI]

People's Physics Book Ch 8-1 The Big Idea When any two bodies in the universe interact, they can components are conserved. #12;People's Physics Book Ch 8-2 Key Concepts · Impulse is how momentum

California at Santa Cruz, University of

Note: This page contains sample records for the topic "ideas examine barriers" 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

Plasma Surface Modification of Polymer Backsheets: Origins of Future Interfacial Barrier/Backsheet Failure  

SciTech Connect (OSTI)

Flexible polymer substrates coated with inorganic oxide moisture barriers are a potential replacement for glass backsheets in thin film PV modules. Silicon oxynitride (SiOxNy) deposited by PECVD on polyethylene terephthalate (PET) represents one potential new backsheet candidate. Barrier deposition runs at NREL have typically included a nitrogen-rich plasma pretreatment prior to actual barrier deposition with the intention of cleaning the PET surface as well as enhancing adhesion of the SiOxNy barrier film to PET; however, test coupons of PET/barrier/EVA/TPE failed after damp heat exposure. PET substrates exposed to plasma conditions similar to those used in pre-treatment were examined by X-ray photoelectron spectroscopy (XPS) to reveal new low molecular weight PET fragments are created which are volatile upon heating and water soluble. Failure analysis of the coupons determined that the moisture barrier is, in fact, transferred to the encapsulant side.

Pankow, J. W.; Glick, S. H.

2005-11-01T23:59:59.000Z

62

Annotated bibliography of selected references on shoreline barrier island deposits with emphasis on Patrick Draw Field, Sweetwater County, Wyoming  

SciTech Connect (OSTI)

This bibliography contains 290 annotated references on barrier island and associated depositional environments and reservoirs. It is not an exhaustive compilation of all references on the subject, but rather selected papers on barrier islands, and the depositional processes of formation. Papers that examine the morphology and internal architecture of barrier island deposits, exploration and development technologies are emphasized. Papers were selected that aid in understanding reservoir architecture and engineering technologies to help maximize recovery efficiency from barrier island oil reservoirs. Barrier islands from Wyoming, Montana and the Rocky Mountains basins are extensively covered.

Rawn-Schatzinger, V.; Schatzinger, R.A.

1993-07-01T23:59:59.000Z

63

Midterm Examination Spring, 2005  

E-Print Network [OSTI]

expression with exclusive-OR and AND gates. (8 pt) DCBADCBADBCADCBAF +++= Fig. 1 Logic Diagram for BCD to Excess-3 Code Converter #12; (MEC520) Midterm Examination Spring, 2005 #12;

Ryu, Jee-Hwan

64

Systems study on engineered barriers: barrier performance analysis  

SciTech Connect (OSTI)

A performance assessment model for multiple barrier packages containing unreprocessed spent fuel has been modified and applied to several package designs. The objective of the study was to develop information to be used in programmatic decision making concerning engineered barrier package design and development. The assessment model, BARIER, was developed in previous tasks of the System Study on Engineered Barriers (SSEB). The new version discussed in this report contains a refined and expanded corrosion rate data base which includes pitting, crack growth, and graphitization as well as bulk corrosion. Corrosion rates for oxic and anoxic conditions at each of the two temperature ranges are supplied. Other improvements include a rigorous treatment of radionuclide release after package failure which includes resistance of damaged barriers and backfill, refined temperature calculations that account for convection and radiation, a subroutine to calculate nuclear gamma radiation field at each barrier surface, refined stress calculations with reduced conservatism and various coding improvements to improve running time and core usage. This report also contains discussion of alternative scenarios to the assumed flooded repository as well as the impact of water exclusion backfills. The model was used to assess post repository closure performance for several designs which were all variation of basic designs from the Spent Unreprocessed Fuel (SURF) program. Many designs were found to delay the onset of leaching by at least a few hundreds of years in all geologic media. Long delay times for radionuclide release were found for packages with a few inches of sorption backfill. Release of uranium, plutonium, and americium was assessed.

Stula, R.T.; Albert, T.E.; Kirstein, B.E.; Lester, D.H.

1980-09-01T23:59:59.000Z

65

Vented Cavity Radiant Barrier Assembly And Method  

DOE Patents [OSTI]

A vented cavity radiant barrier assembly (2) includes a barrier (12), typically a PV module, having inner and outer surfaces (18, 22). A support assembly (14) is secured to the barrier and extends inwardly from the inner surface of the barrier to a building surface (14) creating a vented cavity (24) between the building surface and the barrier inner surface. A low emissivity element (20) is mounted at or between the building surface and the barrier inner surface. At least part of the cavity exit (30) is higher than the cavity entrance (28) to promote cooling air flow through the cavity.

Dinwoodie, Thomas L. (Piedmont, CA); Jackaway, Adam D. (Berkeley, CA)

2000-05-16T23:59:59.000Z

66

Plastic Schottky barrier solar cells  

DOE Patents [OSTI]

A photovoltaic cell structure is fabricated from an active medium including an undoped, intrinsically p-type organic semiconductor comprising polyacetylene. When a film of such material is in rectifying contact with a magnesium electrode, a Schottky-barrier junction is obtained within the body of the cell structure. Also, a gold overlayer passivates the magnesium layer on the undoped polyacetylene film.

Waldrop, James R. (Thousand Oaks, CA); Cohen, Marshall J. (Thousand Oaks, CA)

1984-01-24T23:59:59.000Z

67

Low Conductivity Thermal Barrier Coatings  

E-Print Network [OSTI]

Low Conductivity Thermal Barrier Coatings A Dissertation Presented to The Faculty of the School conductivity of the coatings. The minimum thermal conductivity occurs at a low rotation rate and is 0.8 W intrinsic thermal conductivity, good phase stability and greater resistance to sintering and CMAS attack

Wadley, Haydn

68

Artificial intelligence based on Darwin's idea By Mark Baard  

E-Print Network [OSTI]

Artificial intelligence based on Darwin's idea By Mark Baard January 31, 2011 PROTOTYPES, his robots' artificial brains evolved not in isolation, but in conjunction with their changing bodies yielding. The result is a grip that is firm enough to lift a fragile object, but which requires none

Bongard, Josh

69

Standard and non standard ideas for the Higgs boson sector  

E-Print Network [OSTI]

Standard and non standard ideas for the Higgs boson sector Riccardo Barbieri Johns Hopkins Workshop as the Higgs boson is in their low-energy spectrum We only know of approximate symmetries that can explain synoptic table Supersymmetric The SM Higgs boson TC-like Minimally extended Higgsless "Composite" 5

Abbondandolo, Alberto

70

People's Physics Book Ch13-1 The Big Ideas  

E-Print Network [OSTI]

People's Physics Book Ch13-1 The Big Ideas: The name electric current is given to the phenomenon of the power source, you need the total resistance of the circuit and the total current: Vtotal = ItotalRtotal. · Power is the rate that energy is released. The units for power are Watts (W), which equal Joules per

California at Santa Cruz, University of

71

People's Physics Book Ch 21-1 The Big Idea  

E-Print Network [OSTI]

People's Physics Book Ch 21-1 The Big Idea The nuclei of atoms are affected by three forces, the breaking apart of nuclei and it is responsible for atom bombs and nuclear power. A form of fission, where/tH #12;People's Physics Book Ch 21-2 Key Concepts · Some of the matter on Earth is unstable

California at Santa Cruz, University of

72

People's Physics book Ch 2-1 The Big Idea  

E-Print Network [OSTI]

People's Physics book Ch 2-1 The Big Idea Energy is a measure of the amount of, or potential for, often by heat or sound waves. #12;People's Physics book Ch 2-2 Key Applications · In "roller coaster of the bonding energy into energy that is used to power the body. This energy goes on to turn into kinetic energy

California at Santa Cruz, University of

73

People's Physics Book Ch 16-1 The Big Idea  

E-Print Network [OSTI]

People's Physics Book Ch 16-1 The Big Idea Modern circuitry depends on much more than just elements. An active circuit element needs an external source of power to operate. This differentiates them. base emitter collector Diodes have an arrow showing the direction of the flow. #12;People's Physics

California at Santa Cruz, University of

74

CONCEPTS & SYNTHESIS EMPHASIZING NEW IDEAS TO STIMULATE RESEARCH IN ECOLOGY  

E-Print Network [OSTI]

CONCEPTS & SYNTHESIS EMPHASIZING NEW IDEAS TO STIMULATE RESEARCH IN ECOLOGY Ecology, 93(7), 2012, pp. 1527­1539 � 2012 by the Ecological Society of America Uses and misuses of bioclimatic envelope, they can be applied to a variety of questions in ecology, evolution, and conservation. However, some have

Hammerton, James

75

CONCEPTS & SYNTHESIS EMPHASIZING NEW IDEAS TO STIMULATE RESEARCH IN ECOLOGY  

E-Print Network [OSTI]

CONCEPTS & SYNTHESIS EMPHASIZING NEW IDEAS TO STIMULATE RESEARCH IN ECOLOGY Ecology, 87(6), 2006, pp. 1345­1358 � 2006 by the Ecological Society of America ANALYTIC WEBS SUPPORT THE SYNTHESIS OF ECOLOGICAL DATA SETS AARON M. ELLISON,1,3 LEON J. OSTERWEIL,2 LORI CLARKE,2 JULIAN L. HADLEY,1 ALEXANDER WISE

Massachusetts at Amherst, University of

76

Ideas for Security Assurance in Security Critical Software using Modelica  

E-Print Network [OSTI]

Ideas for Security Assurance in Security Critical Software using Modelica David Broman, Peter critical software. Modelica is a modern, strongly typed, de- clarative, and object-oriented language assurance, by expanding the scope of Modelica into also becoming a declarative modeling language for other

Zhao, Yuxiao

77

Updated 2/26/14 International Degree & Education Abroad (IDEA)  

E-Print Network [OSTI]

Updated 2/26/14 International Degree & Education Abroad (IDEA) PreAdvising Form Name; Updated 2/26/14 Why do you want to participate in an education abroad experience? (Check all/duration:____________ All students planning to participate in an OSUapproved education abroad program (i.e. study

Escher, Christine

78

Updated 5/8/14 International Degree & Education Abroad (IDEA)  

E-Print Network [OSTI]

Updated 5/8/14 International Degree & Education Abroad (IDEA) Pre-Advising Form Name students planning to participate in an OSU-approved education abroad program (i.e. study/research abroad- 4 pm) Moreland Hall (across from MU), Malamud Room (Mon. 10 am-2 pm & Fri. 10 am-3 pm) #12;Updated 5

Escher, Christine

79

People's Physics Book Ch 7-1 The Big Idea  

E-Print Network [OSTI]

People's Physics Book Ch 7-1 The Big Idea The universe has many remarkable qualities, among them. This is the second of the five fundamental conservation laws in physics. The other four are conservation of energy;People's Physics Book Ch 7-2 as just the two cars. In this case, internal forces include

California at Santa Cruz, University of

80

Imagine Tomorrow: Student Competition Leads to Innovative Biofuel Ideas  

Office of Energy Efficiency and Renewable Energy (EERE)

For this year’s Imagine Tomorrow competition, the Bioenergy Technologies Office will select a student team to present their idea and project at the Biomass 2014 conference in July. Learn more about the competition, which will take place this weekend at Washington State University.

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


81

Overcoming Multifamily Sector Barriers in Austin, Texas  

Broader source: Energy.gov [DOE]

Presents techniques on overcoming the barriers of multifamily energy efficiency projects, including how to market to property managers.

82

Numerical Valuation of Discrete Barrier Options with  

E-Print Network [OSTI]

Numerical Valuation of Discrete Barrier Options with the Adaptive Mesh Model and Other Competing for discrete barrier options such that many methods have been suggested and declared to price discrete barrier options fast and accurately but no one can tell exactly that what method is the best. We also make

Chu, Hao-hua

83

The effect of desiccation on UMTRA Project radon barrier materials  

SciTech Connect (OSTI)

The proposed US Environmental Protection Agency (EPA) groundwater standards (40 CFR 192) require that Uranium Mill Tailings Remedial Action (UMTRA) Project remedial action designs meet low numerical limits for contaminants contained in water or vapors exiting the disposal cell embankments. To meet the standards, a cover of compacted, fine-grained soil is placed over UMTRA Project embankments. One of the functions of this cover is to limit infiltration into the disposal cell . The hydraulic conductivity of this infiltration barrier must be low in order to reduce the resultant seepage from the base of the cell to the extent necessary to comply with the proposed EPA groundwater standards. Another function of this cover is to limit the emission of radon gas. The air permeability of the cover must be low in order to reduce radon emissions to comply with EPA standards. Fine-grained soils exposed to evaporation will dry. Continued exposure will cause shrinking that, if allowed to continue, will eventually result in the development of cracks. The results of the cracking could be an increase in the hydraulic conductivity and an increase in the air permeability. This could then allow additional infiltration and increased radon emissions. Cracking of the radon barrier has been noted at one UMTRA Project location. The potential for cracking of the radon barrier during construction has been addressed by requiring moistening of previously compacted surfaces prior to placing additional lifts. The efficacy of these treatments has not been verified. The potential for cracking after construction of the cover is completed has also not been examined. The purpose of this study is to evaluate the potential for cracking of the radon barrier both during construction and after completion of the cover. The effect of shrinkage cracking on the performance of the radon barrier will also be examined.

Not Available

1990-11-01T23:59:59.000Z

84

Examining hydrogen transitions.  

SciTech Connect (OSTI)

This report describes the results of an effort to identify key analytic issues associated with modeling a transition to hydrogen as a fuel for light duty vehicles, and using insights gained from this effort to suggest ways to improve ongoing modeling efforts. The study reported on here examined multiple hydrogen scenarios reported in the literature, identified modeling issues associated with those scenario analyses, and examined three DOE-sponsored hydrogen transition models in the context of those modeling issues. The three hydrogen transition models are HyTrans (contractor: Oak Ridge National Laboratory), MARKAL/DOE* (Brookhaven National Laboratory), and NEMS-H2 (OnLocation, Inc). The goals of these models are (1) to help DOE improve its R&D effort by identifying key technology and other roadblocks to a transition and testing its technical program goals to determine whether they are likely to lead to the market success of hydrogen technologies, (2) to evaluate alternative policies to promote a transition, and (3) to estimate the costs and benefits of alternative pathways to hydrogen development.

Plotkin, S. E.; Energy Systems

2007-03-01T23:59:59.000Z

85

Cryogenic Barrier Demonstration Project. Final report  

SciTech Connect (OSTI)

A long-term frozen soil barrier was implemented at the HRE (Homogeneous Reactor Experiment) Pond facility at the Oak Ridge National Laboratory in 1997. This was performed to verify the technical feasibility and costs of deploying a frozen barrier at a radiologically contaminated site. Work began in September 1996 and progressed through to December 1999. The frozen barrier has been operational since November 1997. Verification of the barrier integrity was performed independently by the EPA's SITE Program. This project showed frozen barriers offer a proven technology to retain below grade hazardous substances at relatively low costs with minimal effect on the environment.

Johnson, L.A.; Yarmak, E.; Long, E.L.

2000-03-01T23:59:59.000Z

86

Energy Efficiency Projects: Overcoming Internal Barriers to Implementa...  

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

Energy Efficiency Projects: Overcoming Internal Barriers to Implementation Energy Efficiency Projects: Overcoming Internal Barriers to Implementation This presentation discusses...

87

4/5/2014 Micro-windmill Charger | DailyHome Decor Ideas http://www.dailyhomedecorideas.com/stunning-ideas/micro-windmill-charger/ 1/4  

E-Print Network [OSTI]

://www.dailyhomedecorideas.com/stunning-ideas/micro-windmill-charger/ 1/4 Daily Home Decor Ideas Micro-windmill Charger VersiCharge EV Charger usa Blowout Sale #12;4/5/2014 Micro-windmill Charger | DailyHome Decor Ideas http://www.dailyhomedecorideas.com/stunning-ideas/micro-windmill-charger/ 4/4 Wireless EV Charging Stations Hiding As Manhole Covers Implantable Piezoelectric Nano- ribbon

Chiao, Jung-Chih

88

Natural gas vehicles : Status, barriers, and opportunities.  

SciTech Connect (OSTI)

In the United States, recent shale gas discoveries have generated renewed interest in using natural gas as a vehicular fuel, primarily in fleet applications, while outside the United States, natural gas vehicle use has expanded significantly in the past decade. In this report for the U.S. Department of Energy's Clean Cities Program - a public-private partnership that advances the energy, economic, and environmental security of the U.S. by supporting local decisions that reduce petroleum use in the transportation sector - we have examined the state of natural gas vehicle technology, current market status, energy and environmental benefits, implications regarding advancements in European natural gas vehicle technologies, research and development efforts, and current market barriers and opportunities for greater market penetration. The authors contend that commercial intracity trucks are a prime area for advancement of this fuel. Therefore, we examined an aggressive future market penetration of natural gas heavy-duty vehicles that could be seen as a long-term goal. Under this scenario using Energy Information Administration projections and GREET life-cycle modeling of U.S. on-road heavy-duty use, natural gas vehicles would reduce petroleum consumption by approximately 1.2 million barrels of oil per day, while another 400,000 barrels of oil per day reduction could be achieved with significant use of natural gas off-road vehicles. This scenario would reduce daily oil consumption in the United States by about 8%.

Rood Werpy, M.; Santini, D.; Burnham, A.; Mintz, M.; Energy Systems

2010-11-29T23:59:59.000Z

89

Dorm Room Idea Now Revolutionizing Energy | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office of Audit ServicesMirant Potomac River Compliance Plan |DocumentDoingDorm Room Idea

90

barrier  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched FerromagnetismWaste andAnniversary, partReview64,783 56,478Tidd Optical Depthbarrier

91

Faculty perceptions about attributes and barriers impacting diffusion of web-based distance education (WBDE) at the China Agricultural University  

E-Print Network [OSTI]

he purpose of this study was to examine faculty perceptions about attributes and barriers impacting diffusion of Web-based distance education (WBDE) at the China Agricultural University (CAU). Random and stratified sampling was used and 273 faculty...

Li, Yan

2004-11-15T23:59:59.000Z

92

Temporal modulation of plasma species in atmospheric dielectric barrier discharges  

SciTech Connect (OSTI)

The atmospheric pressure dielectric barrier discharge in helium is a pulsed discharge in nature and the moment of maximum species densities is almost consistent with peak discharge current density. In this paper, a one-dimensional fluid model is used to investigate the temporal structure of plasma species in an atmospheric He-N{sub 2} dielectric barrier discharge (DBD). It is demonstrated that there exist microsecond delays of the moments of the maximum electron and ion densities from the peak of discharge current density. These time delays are caused by a competition between the electron impact and Penning ionizations, modulated by the N{sub 2} level in the plasma-forming gas. Besides, significant electron wall losses lead to the DBD being more positively charged and, with a distinct temporal separation in the peak electron and cation densities, the plasma is characterized with repetitive bursts of net positive charges. The temporal details of ionic and reactive plasma species may provide a new idea for some biological processes.

Yang, Aijun; Wang, Xiaohua, E-mail: xhw@mail.xjtu.edu.cn, E-mail: mzrong@mail.xjtu.edu.cn; Liu, Dingxin; Rong, Mingzhe, E-mail: xhw@mail.xjtu.edu.cn, E-mail: mzrong@mail.xjtu.edu.cn [Centre for Plasma Biomedicine, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China); Kong, Michael G. [Centre for Plasma Biomedicine, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China); Frank Reidy Research Center for Bioelectrics, Department of Electrical and Computer Engineering, Old Dominion University, Virginia 23508 (United States); Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529 (United States)

2014-07-15T23:59:59.000Z

93

Westinghouse thermal barrier coatings development  

SciTech Connect (OSTI)

Westinghouse, in conjunction with the Department of Energy and Oak Ridge National Laboratory, has embarked upon a program for the development of advanced thermal barrier coatings for industrial gas turbines. Development of thermal barrier coatings (TBC`s) for industrial gas turbines has relied heavily on the transfer of technology from the aerospace industry. Significant differences in the time/temperature/stress duty cycles exist between these two coating applications. Coating systems which perform well in aerospace applications may not been optimized to meet power generation performance requirements. This program will focus on development of TBC`s to meet the specific needs of power generation applications. The program is directed at developing a state-of-the-art coating system with a minimum coating life of 25,000 hours at service temperatures required to meet increasing operating efficiency goals. Westinghouse has assembled a team of university and industry leaders to accomplish this goal. Westinghouse will coordinate the efforts of all program participants. Chromalloy Turbine Technologies, Inc. and Sermatech International, Inc. will be responsible for bond coat and TBC deposition technology. Praxair Specialty Powders, Inc. will be responsible for the fabrication of all bond coat and ceramic powders for the program. Southwest Research Institute will head the life prediction modelling effort; they will also be involved in coordinating nondestructive evaluation (NDE) efforts. Process modelling will be provided by the University of Arizona.

Goedjen, J.G.; Wagner, G. [Westinghouse Electric Corp., Orlando, FL (United States)

1995-10-01T23:59:59.000Z

94

International Collaborations on Engineered Barrier Systems: Experiment...  

Broader source: Energy.gov (indexed) [DOE]

interaction to evaluate sealing and clay barrier performance; 2) EBS Experiment -thermo-hydro-mechanical-chemical (THMC) behavior of the EBS under heating conditions and...

95

Rejuvenating Permeable Reactive Barriers by Chemical Flushing  

Broader source: Energy.gov [DOE]

Final Report:Rejuvenating Permeable Reactive Barriers by Chemical Flushing,U.S. Environmental Protection Agency, Region 8 Support.August 2004

96

Manufacturing Barriers to High Temperature PEM Commercialization...  

Broader source: Energy.gov (indexed) [DOE]

Barriers to High Temperature PEM Commercialization Presented at the NREL Hydrogen and Fuel Cell Manufacturing R&D Workshop in Washington, DC, August 11-12, 2011....

97

BIBLIOGRAPHY ON INSTITUTIONAL BARRIERS TO ENERGY CONSERVATION  

E-Print Network [OSTI]

Institutional Barriers to Energy Conservation C. M. York, C.P.R. , 1973. "Energy Conservation in Buildings: ItsS. (eds. ), 1973. Energy Conservation: Implica­ tions for

York, C.M.

2011-01-01T23:59:59.000Z

98

Sub-barrier fusion with N/Z exotic beams of light nuclei Hence, sub-barrier fusion is sensitive to the density dependence  

E-Print Network [OSTI]

can sensitively examine the dependence of fusion on the isospin degree-of-freedom. Nuclear changes as reaction dynamics proceeds Present status of sub-barrier fusion with n-rich light nuclei models (improved understanding of fusion dynamics) · Constrain models of nuclear reactions in a neutron

de Souza, Romualdo T.

99

Plasma Surface Modification of Polymer Backsheets: Origins of Future Interfacial Barrier/Backsheet Failure (Poster)  

SciTech Connect (OSTI)

Flexible polymer substrates coated with inorganic oxide moisture barriers are a potential replacement for glass backsheets in thin-film PV (photovoltaic) modules. Silicon oxynitride (SiO{sub x}N{sub y}) deposited by plasma enhanced chemical vapor deposition (PECVD) on polyethylene terephthalate (PET) represents one potential new backsheet candidate. Barrier deposition runs at NREL have included a nitrogen-rich plasma pretreatment prior to barrier deposition with the intention of cleaning the PET surface and enhancing adhesion of the SiO{sub x}N{sub y} barrier film to PET; however, test coupons of PET/barrier/EVA/TPE failed after damp-heat exposure. (EVA is ethylene vinyl acetate and TPE is Tedlar{reg_sign}-PET-EVA). PET substrates exposed to plasma conditions similar to those used in pretreatment were examined by X-ray photoelectron spectroscopy (XPS) to reveal that new low molecular weight PET fragments were created at the PET surface. These fragments are responsible for barrier/PET interfacial failure and barrier transfer to the EVA encapsulant side following damp heat exposure.

Pankow, J. W.; Glick, S. H.

2006-05-01T23:59:59.000Z

100

VEHICLE-BARRIER TRACKING OF ASCALED CRASH TEST FOR ROADSIDE BARRIER DESIGN  

E-Print Network [OSTI]

reality of the vehicle-barrier impact. Scaled testing may thus be a cost effective method to evaluateVEHICLE-BARRIER TRACKING OF ASCALED CRASH TEST FOR ROADSIDE BARRIER DESIGN Giuseppina Amato1 Engineering, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK 2 Trinity College Dublin, Dept

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "ideas examine barriers" 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

Standards for Barrier-Free Campus  

E-Print Network [OSTI]

Standards for Barrier-Free Campus Office for Students with Disabilities University Planning Office June 2004 F:\\PROJECTS\\Disabled\\ACCESS04.doc #12;INTRODUCTION The McGill standards for barrier-free and universal design (hereafter referred to as the McGill Standards) are the minimum requirements

Kambhampati, Patanjali

102

BUILDING CODES: BARRIERS TO GREEN INNOVATION  

E-Print Network [OSTI]

BUILDING CODES: BARRIERS TO GREEN INNOVATION JENNIFER GARMAN DR. JIM BOWYER DR. STEVE BRATKOVICH/18/2011 DOVETAIL PARTNERS, INC. www.dovetailinc.org Building Codes: Barriers to Green Innovation Introduction Many architects and contractors want to pursue green building design, technologies and construction. Green

103

Subterranean barriers including at least one weld  

DOE Patents [OSTI]

A subterranean barrier and method for forming same are disclosed, the barrier including a plurality of casing strings wherein at least one casing string of the plurality of casing strings may be affixed to at least another adjacent casing string of the plurality of casing strings through at least one weld, at least one adhesive joint, or both. A method and system for nondestructively inspecting a subterranean barrier is disclosed. For instance, a radiographic signal may be emitted from within a casing string toward an adjacent casing string and the radiographic signal may be detected from within the adjacent casing string. A method of repairing a barrier including removing at least a portion of a casing string and welding a repair element within the casing string is disclosed. A method of selectively heating at least one casing string forming at least a portion of a subterranean barrier is disclosed.

Nickelson, Reva A.; Sloan, Paul A.; Richardson, John G.; Walsh, Stephanie; Kostelnik, Kevin M.

2007-01-09T23:59:59.000Z

104

Multi-layer waste containment barrier  

DOE Patents [OSTI]

An apparatus for constructing an underground containment barrier for containing an in-situ portion of earth. The apparatus includes an excavating device for simultaneously (i) excavating earthen material from beside the in-situ portion of earth without removing the in-situ portion and thereby forming an open side trench defined by opposing earthen sidewalls, and (ii) excavating earthen material from beneath the in-situ portion of earth without removing the in-situ portion and thereby forming a generally horizontal underground trench beneath the in-situ portion defined by opposing earthen sidewalls. The apparatus further includes a barrier-forming device attached to the excavating device for simultaneously forming a side barrier within the open trench and a generally horizontal, multi-layer barrier within the generally horizontal trench. The multi-layer barrier includes at least a first layer and a second layer.

Smith, Ann Marie (Pocatello, ID); Gardner, Bradley M. (Idaho Falls, ID); Nickelson, David F. (Idaho Falls, ID)

1999-01-01T23:59:59.000Z

105

DOE Seeks Your Novel Ideas for Recovery of Rare Earth Elements...  

Broader source: Energy.gov (indexed) [DOE]

Seeks Your Novel Ideas for Recovery of Rare Earth Elements from Coal and Coal Byproducts DOE Seeks Your Novel Ideas for Recovery of Rare Earth Elements from Coal and Coal...

106

Idea-Nation: A Unique Framework for Managing Crowd-Sourced Projects  

E-Print Network [OSTI]

through a management frame work for inter-organizational crowd-sourced projects called Idea-Nation....

Palmer, Joseph

2014-12-19T23:59:59.000Z

107

A brief examination of optical tagging technologies.  

SciTech Connect (OSTI)

Presented within this report are the results of a brief examination of optical tagging technologies funded by the Laboratory Directed Research and Development (LDRD) program at Sandia National Laboratories. The work was performed during the summer months of 2002 with total funding of $65k. The intent of the project was to briefly examine a broad range of approaches to optical tagging concentrating on the wavelength range between ultraviolet (UV) and the short wavelength infrared (SWIR, {lambda} < 2{micro}m). Tagging approaches considered include such things as simple combinations of reflective and absorptive materials closely spaced in wavelength to give a high contrast over a short range of wavelengths, rare-earth oxides in transparent binders to produce a narrow absorption line hyperspectral tag, and fluorescing materials such as phosphors, dies and chemically precipitated particles. One technical approach examined in slightly greater detail was the use of fluorescing nano particles of metals and semiconductor materials. The idea was to embed such nano particles in an oily film or transparent paint binder. When pumped with a SWIR laser such as that produced by laser diodes at {lambda}=1.54{micro}m, the particles would fluoresce at slightly longer wavelengths, thereby giving a unique signal. While it is believed that optical tags are important for military, intelligence and even law enforcement applications, as a business area, tags do not appear to represent a high on return investment. Other government agencies frequently shop for existing or mature tag technologies but rarely are interested enough to pay for development of an untried technical approach. It was hoped that through a relatively small investment of laboratory R&D funds, enough technologies could be identified that a potential customers requirements could be met with a minimum of additional development work. Only time will tell if this proves to be correct.

Ackermann, Mark R.; Cahill, Paul A. (Aspecular Optics, Dayton, OH); Drummond, Timothy J.; Wilcoxon, Jess Patrick

2003-07-01T23:59:59.000Z

108

Processing and Gas Barrier Behavior of Multilayer Thin Nanocomposite Films  

E-Print Network [OSTI]

barrier for goods requiring long shelf life. Current gas barrier technologies like plasma-enhanced vapor deposition (PECVD) often create high barrier metal oxide films, which are prone to cracking when flexed. Bulk composites composed of polymer...

Yang, You-Hao

2012-10-19T23:59:59.000Z

109

Constructing Hydraulic Barriers in Deep Geologic Formations  

SciTech Connect (OSTI)

Many construction methods have been developed to create hydraulic barriers to depths of 30 to 50 meters, but few have been proposed for depths on the order of 500 meters. For these deep hydraulic barriers, most methods are potentially feasible for soil but not for hard rock. In the course of researching methods of isolating large subterranean blocks of oil shale, the authors have developed a wax thermal permeation method for constructing hydraulic barriers in rock to depths of over 500 meters in competent or even fractured rock as well as soil. The technology is similar to freeze wall methods, but produces a permanent barrier; and is potentially applicable in both dry and water saturated formations. Like freeze wall barriers, the wax thermal permeation method utilizes a large number of vertical or horizontal boreholes around the perimeter to be contained. However, instead of cooling the boreholes, they are heated. After heating these boreholes, a specially formulated molten wax based grout is pumped into the boreholes where it seals fractures and also permeates radially outward to form a series of columns of wax-impregnated rock. Rows of overlapping columns can then form a durable hydraulic barrier. These barriers can also be angled above a geologic repository to help prevent influx of water due to atypical rainfall events. Applications of the technique to constructing containment structures around existing shallow waste burial sites and water shutoff for mining are also described. (authors)

Carter, E.E.; Carter, P.E. [Technologies Co, Texas (United States); Cooper, D.C. [Ph.D. Idaho National Laboratory, Idaho Falls, ID (United States)

2008-07-01T23:59:59.000Z

110

Modeling and Simulation of Long-Term Performance of Near-Surface Barriers  

SciTech Connect (OSTI)

Society has and will continue to generate hazardous wastes whose risks must be managed. For exceptionally toxic, long-lived, and feared waste, the solution is deep burial, e.g., deep geological disposal at Yucca Mtn. For some waste, recycle or destruction/treatment is possible. The alternative for other wastes is storage at or near the ground level (in someone’s back yard); most of these storage sites include a surface barrier (cap) to prevent migration of the waste due to infiltration of surface water. The design lifespan for such barriers ranges from 30 to 1000 years, depending on hazard and regulations. In light of historical performance, society needs a better basis for predicting barrier performance over long time periods and tools for optimizing maintenance of barriers while in service. We believe that, as in other industries, better understanding of the dynamics of barrier system degradation will enable improved barriers (cheaper, longer-lived, simpler, easier to maintain) and improved maintenance. We are focusing our research on earthen caps, especially those with evapo-transpiration and capillary breaks. Typical cap assessments treat the barrier’s structure as static prior to some defined lifetime. Environmental boundary conditions such as precipitation and temperature are treated as time dependent. However, other key elements of the barrier system are regarded as constant, including engineered inputs (e.g., fire management strategy, irrigation, vegetation control), surface ecology (critical to assessment of plant transpiration), capillary break interface, material properties, surface erosion rate, etc. Further, to be conservative, only harmful processes are typically considered. A more holistic examination of both harmful and beneficial processes will provide more realistic pre-service prediction and in-service assessment of performance as well as provide designers a tool to encourage beneficial processes while discouraging harmful processes. Thus, the INEEL started a new project on long-term barrier integrity in April 2002 that aims to catalyze a Barrier Improvement Cycle (iterative learning and application) and thus enable Remediation System Performance Management (doing the right maintenance neither too early nor too late, prior to system-level failure). This paper describes our computer simulation approach for better understanding the relationships and dynamics between the various components and management decisions in a cap. The simulation is designed to clarify the complex relationships between the various components within the cap system and the various management practices that affect the barrier performance. We have also conceptualized a time-dependent 3-D simulation with rigorous solution to unsaturated flow physics with complex surface boundary conditions.

Piet, Steven James; Jacobson, Jacob Jordan; Soto, Rafael; Martian, Pete; Martineau, Richard Charles

2003-02-01T23:59:59.000Z

111

DOE to Address Small Businesses Barriers in Government Contracting...  

Broader source: Energy.gov (indexed) [DOE]

to Address Small Businesses Barriers in Government Contracting at Waste Management Conference DOE to Address Small Businesses Barriers in Government Contracting at Waste Management...

112

Drivers and Barriers in the Current Concentrated Solar Power...  

Open Energy Info (EERE)

Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market (Webinar) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Drivers and Barriers in the Current...

113

Deployment Barriers to Distributed Wind Energy: Workshop Report...  

Energy Savers [EERE]

Deployment Barriers to Distributed Wind Energy: Workshop Report, October 28, 2010 Deployment Barriers to Distributed Wind Energy: Workshop Report, October 28, 2010 This report...

114

Geothermal Heat Pumps: Market Status, Barriers to Adoption, and...  

Open Energy Info (EERE)

Barriers to Adoption, and Actions to Overcome Barriers AgencyCompany Organization: Oak Ridge National Laboratory Sector: Energy Focus Area: Renewable Energy, Geothermal...

115

February 20, 2014 Webinar - Performance of Engineered Barriers...  

Office of Environmental Management (EM)

20, 2014 Webinar - Performance of Engineered Barriers: Lessons Learned February 20, 2014 Webinar - Performance of Engineered Barriers: Lessons Learned February 20, 2014 Webinar -...

116

Vehicle Technologies Office Merit Review 2014: Removing Barriers...  

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

Review 2014: Removing Barriers, Implementing Policies and Advancing Alternative Fuels Markets in New England Vehicle Technologies Office Merit Review 2014: Removing Barriers,...

117

Recent Research to Address Technical Barriers to Increased Use...  

Broader source: Energy.gov (indexed) [DOE]

Recent Research to Address Technical Barriers to Increased Use of Biodiesel Recent Research to Address Technical Barriers to Increased Use of Biodiesel 2005 Diesel Engine Emissions...

118

Thermal Bypass Air Barriers in the 2009 International Energy...  

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

Thermal Bypass Air Barriers in the 2009 International Energy Conservation Code - Building America Top Innovation Thermal Bypass Air Barriers in the 2009 International Energy...

119

Method for forming a barrier layer  

SciTech Connect (OSTI)

Cubic or metastable cubic refractory metal carbides act as barrier layers to isolate, adhere, and passivate copper in semiconductor fabrication. One or more barrier layers of the metal carbide are deposited in conjunction with copper metallizations to form a multilayer characterized by a cubic crystal structure with a strong (100) texture. Suitable barrier layer materials include refractory transition metal carbides such as vanadium carbide (VC), niobium carbide (NbC), tantalum carbide (TaC), chromium carbide (Cr.sub.3 C.sub.2), tungsten carbide (WC), and molybdenum carbide (MoC).

Weihs, Timothy P. (Baltimore, MD); Barbee, Jr., Troy W. (Palo Alto, CA)

2002-01-01T23:59:59.000Z

120

ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS  

SciTech Connect (OSTI)

This slide-show presents 3M photovoltaic-related products, particularly flexible components. Emphasis is on the 3M Ultra Barrier Solar Films. Topics covered include reliability and qualification testing and flexible photovoltaic encapsulation costs.

DeScioli, Derek

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

Communicating across barriers at home and abroad  

SciTech Connect (OSTI)

This paper intends to catalyze the exchange of experience among technical communicators in meeting the challenge of communicating across a multitude of barriers: linguistic, disciplinary, cultural, political, intellectual, and emotional.

McDonald, J.W.

1985-01-01T23:59:59.000Z

122

Breaking the Fuel Cell Cost Barrier  

Broader source: Energy.gov (indexed) [DOE]

the Fuel Cell Cost Barrier AMFC Workshop May 8 th , 2011, Arlington, VA Shimshon Gottesfeld, CTO The Fuel Cell Cost Challenge 2 CellEra's goal - achieve price parity with...

123

Sunk Costs and Antitrust Barriers to Entry  

E-Print Network [OSTI]

US antitrust policy takes as its objective consumer welfare, not total economic welfare. With that objective, Joe Bain's definition of entry barriers is more useful than George Stigler's or definitions ...

Schmalensee, Richard

2004-12-10T23:59:59.000Z

124

Sunk Costs and Antitrust Barriers to Entry  

E-Print Network [OSTI]

US antitrust policy takes as its objective consumer welfare, not total economic welfare. With that objective, Joe Bain's definition of entry barriers is more useful than George Stigler's or definitions based on economic ...

Schmalensee, Richard

2004-04-02T23:59:59.000Z

125

Thermal barrier coating for alloy systems  

DOE Patents [OSTI]

An alloy substrate is protected by a thermal barrier coating formed from a layer of metallic bond coat and a top coat formed from generally hollow ceramic particles dispersed in a matrix bonded to the bond coat.

Seals, Roland D. (Oak Ridge, TN); White, Rickey L. (Harriman, TN); Dinwiddie, Ralph B. (Knoxville, TN)

2000-01-01T23:59:59.000Z

126

Modeling of Residential Attics with Radiant Barriers  

E-Print Network [OSTI]

This paper gives a summary of the efforts at ORNL in modeling residential attics with radiant barriers. Analytical models based on a system of macroscopic heat balances have been developed. Separate models have been developed for horizontal radiant...

Wilkes, K. E.

1988-01-01T23:59:59.000Z

127

ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS  

SciTech Connect (OSTI)

This poster describes the 3M Ultra-Barrier Solar Film and its application; production scale-up and data; reliability and qualification testing; and improvements in the next generation.

Alan, Nachtigal; Berniard, Tracie; Murray, Bill; Roehrig, Mark; Schubert, Charlene; Spagnola, Joseph; Weigel, Mark

2013-01-01T23:59:59.000Z

128

The physics and chemistry of the Schottky barrier height  

SciTech Connect (OSTI)

The formation of the Schottky barrier height (SBH) is a complex problem because of the dependence of the SBH on the atomic structure of the metal-semiconductor (MS) interface. Existing models of the SBH are too simple to realistically treat the chemistry exhibited at MS interfaces. This article points out, through examination of available experimental and theoretical results, that a comprehensive, quantum-mechanics-based picture of SBH formation can already be constructed, although no simple equations can emerge, which are applicable for all MS interfaces. Important concepts and principles in physics and chemistry that govern the formation of the SBH are described in detail, from which the experimental and theoretical results for individual MS interfaces can be understood. Strategies used and results obtained from recent investigations to systematically modify the SBH are also examined from the perspective of the physical and chemical principles of the MS interface.

Tung, Raymond T., E-mail: rtung@brooklyn.cuny.edu [Department of Physics, Brooklyn College, CUNY, 2900 Bedford Avenue, Brooklyn, New York 11210, USA and Physics Ph.D. Program, The Graduate Center, CUNY, 365 Fifth Avenue, New York 10016 (United States)

2014-03-15T23:59:59.000Z

129

Surface barriers: Problems, solutions, and future needs  

SciTech Connect (OSTI)

The problem of designing a surface barrier for a remediation project can be an enormously challenging task. There is a widely held misconception that surface barrier technology is well developed and works as expected. In fact, the technology is largely unproved and experimental, particularly in terms of long-term performance. The most difficult problem with surface barriers is to provide a long-term barrier to infiltration of water. The materials that have traditionally been considered for the hydraulic barrier within surface barrier systems are low-permeability compacted soil, geomembranes, and the geosynthetic clay liner (GCL). Data are presented to suggest that low-permeability compacted soil is often a poor choice of materials. Unless the compacted soil liner is buried under a very thick layer of protective soil or covered by a geomembrane, the low-permeability, clay-rich, compacted soil is likely to desiccate and lose its low hydraulic conductivity. Differential settlement of a compacted soil liner from uneven compression of underlying waste or other causes is almost certain to produce cracks within the soil liner. Geomembranes do not suffer as much from these problems, but their design life is, at best, a few centuries, The GCL, which contains a thin layer of bentonite, is much better able to resist damage from freezing/thawing, desiccation, and differential settlement than compacted soil liners. The technology of the GCL, which is particularly well suited for arid sites, is reviewed in some detail in this paper because of its technical attributes in surface-barrier applications. Published case histories of the performance of surface barriers are summarized.

Daniel, D.E. [Univ. of Texas, Austin, TX (United States). Dept. of Civil Engineering

1994-12-31T23:59:59.000Z

130

Model assessment of protective barriers: Part 3  

SciTech Connect (OSTI)

Radioactive waste exists at the US Department of Energy's (DOE's) Hanford Site in a variety of locations, including subsurface grout and tank farms, solid waste burial grounds, and contaminated soil sites. Some of these waste sites may need to be isolated from percolating water to minimize the potential for transport of the waste to the ground water, which eventually discharges to the Columbia River. Multilayer protective barriers have been proposed as a means of limiting the flow of water through the waste sites (DOE 1987). A multiyear research program (managed jointly by Pacific Northwest Laboratory (PNL) and Westinghouse Hanford Company for the DOE) is aimed at assessing the performance of these barriers. One aspect of this program involves the use of computer models to predict barrier performance. Three modeling studies have already been conducted and a test plan was produced. The simulation work reported here was conducted by PNL and extends the previous modeling work. The purpose of this report are to understand phenomena that have been observed in the field and to provide information that can be used to improve hydrologic modeling of the protective barrier. An improved modeling capability results in better estimates of barrier performance. Better estimates can be used to improve the design of barriers and the assessment of their long-term performance.

Fayer, M.J.; Rockhold, M.L.; Holford, D.J.

1992-02-01T23:59:59.000Z

131

Modeling and Simulation of Long-Term Performance of Near-Surface Barriers  

SciTech Connect (OSTI)

Society has and will continue to generate hazardous wastes whose risks must be managed. For exceptionally toxic, long-lived, and feared waste, the solution is deep burial, e.g., deep geological disposal at Yucca Mtn. For some waste, recycle or destruction/treatment is possible. The alternative for other wastes is storage at or near the ground level (in someone's back yard); most of these storage sites include a surface barrier (cap) to prevent migration of the waste due to infiltration of surface water. The design lifespan for such barriers ranges from 30 to 1000 years, depending on hazard and regulations. In light of historical performance, society needs a better basis for predicting barrier performance over long time periods and tools for optimizing maintenance of barriers while in service. We believe that, as in other industries, better understanding of the dynamics of barrier system degradation will enable improved barriers (cheaper, longer-lived, simpler, easier to maintain) and improved maintenance. We are focusing our research on earthen caps, especially those with evapo-transpiration and capillary breaks. Typical cap assessments treat the barrier's structure as static prior to some defined lifetime. Environmental boundary conditions such as precipitation and temperature are treated as time dependent. However, other key elements of the barrier system are regarded as constant, including engineered inputs (e.g., fire management strategy, irrigation, vegetation control), surface ecology (critical to assessment of plant transpiration), capillary break interface, material properties, surface erosion rate, etc. Further, to be conservative, only harmful processes are typically considered. A more holistic examination of both harmful and beneficial processes will provide more realistic pre-service prediction and in-service assessment of performance as well as provide designers a tool to encourage beneficial processes while discouraging harmful processes. Thus, the INEEL started a new project on long-term barrier integrity in April 2002 that aims to catalyze a Barrier Improvement Cycle (iterative learning and application) and thus enable Remediation System Performance Management (doing the right maintenance neither too early nor too late, prior to system-level failure). This paper describes our computer simulation approach for better understanding the relationships and dynamics between the various components and management decisions in a cap. The simulation is designed to clarify the complex relationships between the various components within the cap system and the various management practices that affect the barrier performance. We have also conceptualized a time-dependent 3-D simulation with rigorous solution to unsaturated flow physics with complex surface boundary conditions.

Piet, S. J.; Jacobson, J. J.; Martian, P.; Martineau, R.; Soto, R.

2003-02-25T23:59:59.000Z

132

Conceptual Ideas for New Nondestructive UF6 Cylinder Assay Techniques  

SciTech Connect (OSTI)

Nondestructive assay (NDA) measurements of uranium cylinders play an important role in helping the International Atomic Energy Agency (IAEA) safeguard uranium enrichment plants. Traditionally, these measurements have consisted of a scale or load cell to determine the mass of UF{sub 6} in the cylinder combined with a gamma-ray measurement of the 186 keV peak from {sup 235}U to determine enrichment. More recently, Los Alamos National Laboratory (LANL) and Pacific Northwest National Laboratory (PNNL) have developed systems that exploit the passive neutron signal from UF{sub 6} to determine uranium mass and/or enrichment. These include the Uranium Cylinder Assay System (UCAS), the Passive Neutron Enrichment Meter (PNEM), and the Hybrid Enrichment Verification Array (HEVA). The purpose of this report is to provide the IAEA with new ideas on technologies that may or may not be under active development but could be useful for UF{sub 6} cylinder assay. To begin, we have included two feasibility studies of active interrogation techniques. There is a long history of active interrogation in the field of nuclear safeguards, especially for uranium assay. Both of the active techniques provide a direct measure of {sup 235}U content. The first is an active neutron method based on the existing PNEM design that uses a correlated {sup 252}Cf interrogation source. This technique shows great promise for UF{sub 6} cylinder assay and is based on advanced technology that could be implemented in the field in the near term. The second active technique is nuclear resonance fluorescence (NRF). In the NRF technique, a bremsstrahlung photon beam could be used to illuminate the cylinder, and high-resolution gamma-ray detectors would detect the characteristic de-excitation photons. The results of the feasibility study show that under certain measurement geometries, NRF is impractical for UF6 cylinder assay, but the 'grazing transmission' and 'secant transmission' geometries have more potential for this application and should be assessed quantitatively. The next set of techniques leverage scintillator detectors that are sensitive to both neutron and gamma radiation. The first is the BC-523A capture-gated organic liquid scintillator. The detector response from several different neutron energies has been characterized and is included in the study. The BC-523A has not yet been tested with UF{sub 6} cylinders, but the application appears to be well suited for this technology. The second detector type is a relatively new inorganic scintillator called CLYC. CLYC provides a complementary detection approach to the HEVA and PNEM systems that could be used to determine uranium enrichment in UF{sub 6} cylinders. In this section, the conceptual idea for an integrated CLYC-HEVA/PNEM system is explored that could yield more precision and robustness against systemic uncertainties than any one of the systems by itself. This is followed by a feasibility study on using alpha-particle-induced reaction gamma-rays as a way to estimate {sup 234}U abundance in UF{sub 6}. Until now, there has been no readily available estimate of the strength of these reaction gamma-rays. Thick target yields of the chief reaction gammas are computed and show that they are too weak for practical safeguards applications. In special circumstances where long count times are permissible, the 1,275 keV F({alpha},x{gamma}) is observable. Its strength could help verify an operator declaration provided other knowledge is available (especially the age). The other F({alpha},x{gamma}) lines are concealed by the dominant uranium line spectrum and associated continuum. Finally, the last section provides several ideas for electromagnetic and acoustic nondestructive evaluation (NDE) techniques. These can be used to measure cylinder wall thickness, which is a source of systematic uncertainty for gamma-ray-based NDA techniques; characterize the UF{sub 6} filling profile inside the cylinder, which is a source of systematic uncertainty for neutron-based NDA techniques; locate hidden objects inside the cylinder; a

Miller, Karen A. [Los Alamos National Laboratory

2012-05-02T23:59:59.000Z

133

ELECTROSTATICALLY ENHANCED BARRIER FILTER COLLECTION  

SciTech Connect (OSTI)

This work was performed through the University of North Dakota (UND) Chemical Engineering Department with assistance from UND's Energy & Environmental Research Center. This research was undertaken in response to the U.S. Department of Energy Federal Technology Center Program Solicitation No. DE-PS26-99FT40479, Support of Advanced Coal Research at U.S. Universities and Colleges. Specifically, this research was in support of the UCR Core Program and addressees Topic 1, Improved Hot-Gas Contaminant and Particulate Removal Techniques, introducing an advanced design for particulate removal. Integrated gasification combined cycle (IGCC) offers the potential for very high efficiency and clean electric generation. In IGCC, the product gas from the gasifier needs to be cleaned of particulate matter to avoid erosion and high-temperature corrosion difficulties arising with the turbine blades. Current methods involve cooling the gases to {approx}100 C to condense alkalis and remove sulfur and particulates using conventional scrubber technology. This ''cool'' gas is then directed to a turbine for electric generation. While IGCC has the potential to reach efficiencies of over 50%, the current need to cool the product gas for cleaning prior to firing it in a turbine is keeping IGCC from reaching its full potential. The objective of the current project was to develop a highly reliable particulate collector system that can meet the most stringent turbine requirements and emission standards, can operate at temperatures above 1500 F, is applicable for use with all U.S. coals, is compatible with various sorbent injection schemes for sulfur and alkali control, can be integrated into a variety of configurations for both pressurized gasification and combustion, increases allowable face velocity to reduce filter system capital cost, and is cost-competitive with existing technologies. The collector being developed is a new concept in particulate control called electrostatically enhanced barrier filter collection (EBFC). This concept combines electrostatic precipitation (ESP) with candle filters in a single unit. Similar technology has been recently proven on a commercial scale for atmospheric applications, but needed to be tested at high temperatures and pressures. The synergy obtained by combining the two control technologies into a single system should actually reduce filter system capital and operating costs and make the system more reliable. More specifically, the ESP is expected to significantly reduce candle filter load and also to limit ash reintrainment, allowing for full recovery of baseline pressure drop during backpulsing of the filters.

John Erjavec; Michael D. Mann; Ryan Z. Knutson; Michael L. Swanson; Michael E. Collings

2003-06-01T23:59:59.000Z

134

Schottky barrier MOSFET systems and fabrication thereof  

DOE Patents [OSTI]

(MOS) device systems-utilizing Schottky barrier source and drain to channel region junctions are disclosed. Experimentally derived results which demonstrate operation of fabricated N-channel and P-channel Schottky barrier (MOSFET) devices, and of fabricated single devices with operational characteristics similar to (CMOS) and to a non-latching (SRC) are reported. Use of essentially non-rectifying Schottky barriers in (MOS) structures involving highly doped and the like and intrinsic semiconductor to allow non-rectifying interconnection of, and electrical accessing of device regions is also disclosed. Insulator effected low leakage current device geometries and fabrication procedures therefore are taught. Selective electrical interconnection of drain to drain, source to drain, or source to source, of N-channel and/or P-channel Schottky barrier (MOSFET) devices formed on P-type, N-type and Intrinsic semiconductor allows realization of Schottky Barrier (CMOS), (MOSFET) with (MOSFET) load, balanced differential (MOSFET) device systems and inverting and non-inverting single devices with operating characteristics similar to (CMOS), which devices can be utilized in modulation, as well as in voltage controled switching and effecting a direction of rectification.

Welch, James D. (10328 Pinehurst Ave., Omaha, NE 68124)

1997-01-01T23:59:59.000Z

135

Enhanced Densification of SDC Barrier Layers  

SciTech Connect (OSTI)

This technical report explores the Enhanced Densification of SCD Barrier Layers A samaria-doped ceria (SDC) barrier layer separates the lanthanum strontium cobalt ferrite (LSCF) cathode from the yttria-stabilized zirconia (YSZ) electrolyte in a solid oxide fuel cell (SOFC) to prevent the formation of electrically resistive interfacial SrZrO{sub 3} layers that arise from the reaction of Sr from the LSCF with Zr from the YSZ. However, the sintering temperature of this SDC layer must be limited to {approx}1200 C to avoid extensive interdiffusion between SDC and YSZ to form a resistive CeO{sub 2}-ZrO{sub 2} solid solution. Therefore, the conventional SDC layer is often porous and therefore not as impervious to Sr-diffusion as would be desired. In the pursuit of improved SOFC performance, efforts have been directed toward increasing the density of the SDC barrier layer without increasing the sintering temperature. The density of the SDC barrier layer can be greatly increased through small amounts of Cu-doping of the SDC powder together with increased solids loading and use of an appropriate binder system in the screen print ink. However, the resulting performance of cells with these barrier layers did not exhibit the expected increase in accordance with that achieved with the prototypical PLD SDC layer. It was determined by XRD that increased sinterability of the SDC also results in increased interdiffusivity between the SDC and YSZ, resulting in formation of a highly resistive solid solution.

Hardy, John S.; Templeton, Jared W.; Lu, Zigui; Stevenson, Jeffry W.

2011-09-12T23:59:59.000Z

136

Methods for fabricating a micro heat barrier  

DOE Patents [OSTI]

Methods for fabricating a highly effective, micron-scale micro heat barrier structure and process for manufacturing a micro heat barrier based on semiconductor and/or MEMS fabrication techniques. The micro heat barrier has an array of non-metallic, freestanding microsupports with a height less than 100 microns, attached to a substrate. An infrared reflective membrane (e.g., 1 micron gold) can be supported by the array of microsupports to provide radiation shielding. The micro heat barrier can be evacuated to eliminate gas phase heat conduction and convection. Semi-isotropic, reactive ion plasma etching can be used to create a microspike having a cusp-like shape with a sharp, pointed tip (<0.1 micron), to minimize the tip's contact area. A heat source can be placed directly on the microspikes. The micro heat barrier can have an apparent thermal conductivity in the range of 10.sup.-6 to 10.sup.-7 W/m-K. Multiple layers of reflective membranes can be used to increase thermal resistance.

Marshall, Albert C.; Kravitz, Stanley H.; Tigges, Chris P.; Vawter, Gregory A.

2004-01-06T23:59:59.000Z

137

Elastically Cooperative Activated Barrier Hopping Theory of Relaxation in Viscous Fluids. I. General Formulation and Application to Hard Sphere Fluids  

E-Print Network [OSTI]

We generalize the force-level Nonlinear Langevin Equation theory of single particle hopping to include collective effects associated with long range elastic distortion of the liquid. The activated alpha relaxation event is of a mixed spatial character, involving two distinct, but inter-related, local and collective barriers. There are no divergences at volume fractions below jamming or temperatures above zero Kelvin. The ideas are first developed and implemented analytically and numerically in the context of hard sphere fluids. In an intermediate volume fraction crossover regime, the local cage process is dominant in a manner consistent with an apparent Arrhenius behavior. The super-Arrhenius collective barrier is more strongly dependent on volume fraction, dominates the highly viscous regime, and is well described by a nonsingular law below jamming. The increase of the collective barrier is determined by the amplitude of thermal density fluctuations, shear modulus or transient localization length, and a growing microscopic jump length. Alpha relaxation time calculations are in good agreement with recent experiments and simulations on dense fluids and suspensions of hard spheres. Comparisons of the theory with elastic models and entropy crisis ideas are explored. The present work provides a foundation for constructing a quasi-universal, fit-parameter-free theory for relaxation in thermal molecular liquids over 14 orders of magnitude in time.

Stephen Mirigian; Kenneth S. Schweizer

2014-02-20T23:59:59.000Z

138

Prediction of tilted capillary barrier performance  

SciTech Connect (OSTI)

Capillary barriers, consisting of tilted fine-over-coarse layers under unsaturated conditions, have been suggested as landfill covers to divert water infiltration away from sensitive underground regions, especially for arid and semi-arid regions. The Hydrological Evaluation of Landfill Performance (HELP) computer code is an evaluation tool for landfill covers used by designers and regulators. HELP is a quasi-two-dimensional model that predicts moisture movement into and through the underground soil and waste layers. Processes modeled within HELP include precipitation, runoff, evapotranspiration, unsaturated vertical drainage, saturated lateral drainage, and leakage through liners. Unfortunately, multidimensional unsaturated flow phenomena that are necessary for evaluating tilted capillary barriers are not included in HELP. Differences between the predictions of the HELP and those from a multidimensional unsaturated flow code are presented to assess the two different approaches. Comparisons are presented for the landfill covers including capillary barrier configurations at the Alternative Landfill Cover Demonstration (ALCD) being conducted at Sandia.

Webb, S.W.; McCord, J.T.; Dwyer, S.F.

1997-04-01T23:59:59.000Z

139

Pressurized security barrier and alarm system  

DOE Patents [OSTI]

A security barrier for placement across a passageway is made up of interconnected pressurized tubing made up in a grid pattern with openings too small to allow passage. The tubing is connected to a pressure switch, located away from the barrier site, which activates an alarm upon occurrence of a pressure drop. A reinforcing bar is located inside and along the length of the tubing so as to cause the tubing to rupture and set off the alarm upon an intruder`s making an attempt to crimp and seal off a portion of the tubing by application of a hydraulic tool. Radial and rectangular grid patterns are disclosed. 7 figures.

Carver, D.W.

1995-04-11T23:59:59.000Z

140

Pressurized security barrier and alarm system  

DOE Patents [OSTI]

A security barrier for placement across a passageway is made up of interconnected pressurized tubing made up in a grid pattern with openings too small to allow passage. The tubing is connected to a pressure switch, located away from the barrier site, which activates an alarm upon occurrence of a pressure drop. A reinforcing bar is located inside and along the length of the tubing so as to cause the tubing to rupture and set off the alarm upon an intruder's making an attempt to crimp and seal off a portion of the tubing by application of a hydraulic tool. Radial and rectangular grid patterns are disclosed.

Carver, Don W. (Knoxville, TN)

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

Computational Design and Experimental Validation of New Thermal Barrier Systems  

SciTech Connect (OSTI)

This project (10/01/2010-9/30/2013), “Computational Design and Experimental Validation of New Thermal Barrier Systems”, originates from Louisiana State University (LSU) Mechanical Engineering Department and Southern University (SU) Department of Computer Science. This proposal will directly support the technical goals specified in DE-FOA-0000248, Topic Area 3: Turbine Materials, by addressing key technologies needed to enable the development of advanced turbines and turbine-based systems that will operate safely and efficiently using coal-derived synthesis gases. We will develop novel molecular dynamics method to improve the efficiency of simulation on novel TBC materials; we will perform high performance computing (HPC) on complex TBC structures to screen the most promising TBC compositions; we will perform material characterizations and oxidation/corrosion tests; and we will demonstrate our new Thermal barrier coating (TBC) systems experimentally under Integrated gasification combined cycle (IGCC) environments. The durability of the coating will be examined using the proposed High Temperature/High Pressure Durability Test Rig under real syngas product compositions.

Guo, Shengmin; Yang, Shizhong; Khosravi, Ebrahim

2011-12-31T23:59:59.000Z

142

Working Paper Social Science Research Network THE IMPORTANCE OF THE RAW IDEA IN INNOVATION  

E-Print Network [OSTI]

Working Paper ­ Social Science Research Network THE IMPORTANCE OF THE RAW IDEA IN INNOVATION is in determining success in innovation. On the one hand, one could argue that without a good idea, the chance argue that with the right resources and approach, an innovator can create value out of just about

Sekhon, Jasjeet S.

143

FIRE IMPACTS ON AN ENGINEERED BARRIER’S PERFORMANCE: THE HANFORD BARRIER ONE YEAR AFTER A CONTROLLED BURN  

SciTech Connect (OSTI)

A critical unknown for long-term engineered barrier performance is the effect of wild fire during a post-institutional control environment where routine maintenance may be limited or non-existent. In September 2008, a controlled burn was conducted on one half of a vegetated, multilayered capillary barrier emplaced over a Hanford waste site. The effects on barrier performance have been monitored and documented over the past year. Soil physical, chemical, and hydrologic properties; plant floristics and density; and animal-use were characterized before and after the fire with the unburned half of the barrier serving as a control. Temperatures during the controlled burn ranged from 250 oC at 1.5 cm below the surface to over 700 oC at 1 m above the surface. Significant decreases in hydraulic conductivity and surface-soil wettability were observed immediately after the fire due primarily to hydrophobic conditions created by the fire. Major soil nutrients, pH, and electrical conductivity remain elevated post-fire. Up until June 2009, post-burn soil moisture content in the 0-1 m depth interval was significantly lower on the burned section than the unburned section and is attributed to differences in surface evaporation. Higher soil moisture contents in the 1-2 m interval on the burned section are attributed to insignificant water uptake owing to the absence of deep-rooted shrubs. Moisture profiles reversed after June to show lower water contents throughout the profile on the unburned section. Dense stands of sagebrush were destroyed from the fire allowing many more species to emerge thereby increasing species diversity. Seed sources contributing to this species diversification were from either the existing seedbank and/or wind-blown sources. Measurements are ongoing and the results are expected to help close a knowledge gap about barrier recovery after major disturbances.

Ward, Anderson L.; Link, Steven O.; Leary, Kevin D.; Berlin, Gregory T.

2010-03-31T23:59:59.000Z

144

Nondestructive evaluation of environmental barrier coatings in CFCC combustor liners.  

SciTech Connect (OSTI)

Advanced combustor liners fabricated of SiC/SiC continuous fiber-reinforced ceramic composite (CFCC) and covered with environmental barrier coatings (EBCs) have been successfully tested in Solar Turbines Inc. field engines. The primary goal for the CFCC/EBC liners is to reach a 30,000-h lifetime. Because the EBCs, when applied on the hot surfaces of liners, protect the underlying CFCC from oxidation damage, their performance is critical in achieving the lifetime goal. To determine CFCC/EBC liner condition and assess operating damage, the liners were subjected to nondestructive evaluation (NDE) during various processing stages, as well as before and after the engine test. The NDE techniques included pulsed infrared thermal imaging, air-coupled ultrasonic scanning, and X-ray computerized tomography. It was found that EBC damage and spallation depend on the condition of the CFCC material. The NDE results and correlations with destructive examination are discussed.

Sun, J. G.; Benz, J.; Ellingson, W. A.; Kimmel, J. B.; Price, J. R.; Energy Technology; Solar Turbines, Inc

2007-01-01T23:59:59.000Z

145

Electrical Transport in Schottky Barrier MOSFETs  

E-Print Network [OSTI]

Barrier (SB) MOSFET is one such device. It consists of metallic silicide source and drain contacts' that result in a reduced local potential at the abrupt metal/semiconductor interface. At relatively high at the Metal/Semiconductor Interface 66 4.3. Current Transport Limits 69 4.4. Sub-threshold Regime 72 4

Reed, Mark

146

IDENTIFYING AND OVERCOMING BARRIERS TO CLIMATE CHANGE  

E-Print Network [OSTI]

communities need outside intervention to address "legacy" and "remote" barriers. With still very little--even in highly developed nations--for the scientific community in terms of future research priorities significant in motivating or launching the adaptation process. The study also found that communities have

147

Metal Nitride Diffusion Barriers for Copper Interconnects  

E-Print Network [OSTI]

of copper into silicon, which is primarily through grain boundaries. This dissertation reports the processing of high quality stoichiometric thin films of TiN, TaN and HfN, and studies their Cu diffusion barrier properties. Epitaxial metastable cubic TaN (B1...

Araujo, Roy A.

2010-01-14T23:59:59.000Z

148

Engineered Barrier System: Physical and Chemical Environment  

SciTech Connect (OSTI)

The conceptual and predictive models documented in this Engineered Barrier System: Physical and Chemical Environment Model report describe the evolution of the physical and chemical conditions within the waste emplacement drifts of the repository. The modeling approaches and model output data will be used in the total system performance assessment (TSPA-LA) to assess the performance of the engineered barrier system and the waste form. These models evaluate the range of potential water compositions within the emplacement drifts, resulting from the interaction of introduced materials and minerals in dust with water seeping into the drifts and with aqueous solutions forming by deliquescence of dust (as influenced by atmospheric conditions), and from thermal-hydrological-chemical (THC) processes in the drift. These models also consider the uncertainty and variability in water chemistry inside the drift and the compositions of introduced materials within the drift. This report develops and documents a set of process- and abstraction-level models that constitute the engineered barrier system: physical and chemical environment model. Where possible, these models use information directly from other process model reports as input, which promotes integration among process models used for total system performance assessment. Specific tasks and activities of modeling the physical and chemical environment are included in the technical work plan ''Technical Work Plan for: In-Drift Geochemistry Modeling'' (BSC 2004 [DIRS 166519]). As described in the technical work plan, the development of this report is coordinated with the development of other engineered barrier system analysis model reports.

P. Dixon

2004-04-26T23:59:59.000Z

149

Barrier Immune Radio Communications for Demand Response  

E-Print Network [OSTI]

LBNL-2294E Barrier Immune Radio Communications for Demand Response F. Rubinstein, G. Ghatikar, J Ann Piette of Lawrence Berkeley National Laboratory's (LBNL) Demand Response Research Center (DRRC and Environment's (CIEE) Demand Response Emerging Technologies Development (DRETD) Program, under Work for Others

150

Thermal barrier coating having high phase stability  

DOE Patents [OSTI]

A device (10) comprising a substrate (22) having a deposited ceramic thermal barrier coating characterized by a microstructure having gaps (28) where the thermal barrier coating comprises a first thermal barrier layer (40), and a second thermal barrier layer (30) with a pyrochlore crystal structure having a chemical formula of A.sup.n+.sub.2-x B.sup.m+.sub.2+x O.sub.7-y, where A is selected from the group of elements consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and mixtures thereof, where B is selected from the group of elements consisting of Zr, Hf, Ti and mixtures thereof, where n and m are the valence of A and B respectively, and for -0.5.ltoreq.x.ltoreq.0.5, ##EQU1## and excluding the following combinations for x=0, y=0: A=La and B=Zr; A=La and B=Hf; A=Gd and B=Hf; and A=Yb and B=Ti.

Subramanian, Ramesh (Oviedo, FL)

2002-01-01T23:59:59.000Z

151

MENDING THE IN SITU MANIPULATION BARRIER  

SciTech Connect (OSTI)

In early 2004, the U.S. Department of Energy (DOE) Richland and Fluor Hanford requested technical assistance from the DOE Headquarters EM-23 Technical Assistance Program to provide a team of technical experts to develop recommendations for mending the In Situ Redox Manipulation (ISRM) Barrier in the 100-D Area of the Hanford Site in Washington State. To accommodate this request, EM-23 provided support to convene a group of technical experts from industry, a national laboratory, and a DOE site to participate in a 2 1/2-day workshop with the objective of identifying and recommending options to enhance the performance of the 100-D Area reactive barrier and of a planned extension to the northeast. This report provides written documentation of the team's findings and recommendations. In 1995, a plume of dissolved hexavalent chromium [Cr(VI)], which resulted from operation of the D/DR Reactors at the Hanford site, was discovered along the Columbia River shoreline and in the 100-D Area. Between 1999 and 2003, a reactive barrier using the In Situ Redox Manipulation (ISRM) technology, was installed a distance of 680 meters along the river to reduce the Cr(VI) in the groundwater. The ISRM technology creates a treatment zone within the aquifer by injection of sodium dithionite, a strong reducing agent that scavenges dissolved oxygen (DO) from the aquifer and reduces ferric iron [Fe(III)], related metals, and oxy-ions. The reduction of Fe(III) to ferrous [Fe(II)] iron provides the primary reduction capacity to reduce Cr(VI) to the +3 state, which is less mobile and less toxic. Bench-scale and field-scale treatability tests were initially conducted to demonstrate proof-of principle and to provide data for estimation of barrier longevity. These calculations estimated barrier longevity in excess of twenty years. However, several years after initial and secondary treatment, groundwater in a number of wells has been found to contain elevated chromium (Cr) concentrations, indicating some loss of reductive capacity within the aquifer. The Technical Assistance Team (TAT) was requested to perform the following activities: (1) evaluate the most probable condition(s) that has led to the presence of Cr(VI) in 12 different barrier wells (i.e. premature loss of reductive capacity), (2) recommend methods for determining the cause of the problem, (3) recommend methods for evaluating the magnitude of the problem, (4) recommend practicable method(s) for mending the barrier that involves a long-term solution, and (5) recommend methods for extending the barrier to the northeast (e.g., changing injection procedure, changing or augmenting the injected material). Since the March 2004 workshop, a decision has been made to place a hold on the barrier extension until more is known about the cause of the problem. However, the report complies with the original request for information on all of the above activities, but focuses on determining the cause of the problem and mending of the existing barrier.

PETERSEN, S.W.

2006-02-06T23:59:59.000Z

152

Examiner Characteristics and the Patent Grant Rate  

E-Print Network [OSTI]

Examiner citations to patents; an exploration and overview''Em- pirical Exploration of Patent Prosecution'' Vanderbiltet al. (2003). "Are All Patent Examiners Equal? Examiners,

Lemley, Mark A.

2009-01-01T23:59:59.000Z

153

Model Studies of Pore Stability and Evolution in Thermal Barrier Coatings (TBCs)  

E-Print Network [OSTI]

N. Katz, “Advanced Ceramics: Thermal Barrier Coatings BeatConductivity of Advanced Ceramic Thermal Barrier CoatingsFatigue Testing of Ceramic Thermal Barrier Coatings,” NASA/

Glaeser, A M

2008-01-01T23:59:59.000Z

154

Overcoming Barriers to Wind Development in Appalachian Coal Country  

SciTech Connect (OSTI)

This research project synthesizes existing data and communication from experts to assess barriers to wind development in Pennsylvania, Maryland, West Virginia, Virginia, and Kentucky, and makes recommendations where feasible to reduce or eliminate those barriers.

Brent Bailey; Evan Hansen

2012-10-09T23:59:59.000Z

155

Wind Power Reliability: Breaking Down a Barrier | Department...  

Broader source: Energy.gov (indexed) [DOE]

Wind Power Reliability: Breaking Down a Barrier Wind Power Reliability: Breaking Down a Barrier June 25, 2010 - 12:16pm Addthis EnerNex Corporation is developing documentation and...

156

Postirradiation examination of beryllium pebbles  

SciTech Connect (OSTI)

Postirradiation examinations of COBRA-1A beryllium pebbles irradiated in the EBR-II fast reactor at neutron fluences which generated 2700--3700 appm helium have been performed. Measurements included density change, optical microscopy, scanning electron microscopy, and transmission electron microscopy. The major change in microstructure is development of unusually shaped helium bubbles forming as highly non-equiaxed thin platelet-like cavities on the basal plane. Measurement of the swelling due to cavity formation was in good agreement with density change measurements.

Gelles, D.S. [Pacific Northwest National Lab., Richland, WA (United States)

1998-03-01T23:59:59.000Z

157

Near-infrared spectroscopy of HD the barrier to linearity  

E-Print Network [OSTI]

Near-infrared spectroscopy of HD 3 above the barrier to linearity BY JENNIFER L. GOTTFRIED, transitions of HC 3 above the barrier to linearity have been observed. A highly sensitive near-infrared-adiabatic and radiative corrections is revealed. Keywords: HD 3 ; near-infrared spectroscopy; barrier to linearity 1

Oka, Takeshi

158

Theoretical and Experimental Examination of the Intermediate-Band Concept for Strain-Balanced (In,Ga)As/Ga(As,P) Quantum Dot Solar Cells  

SciTech Connect (OSTI)

The intermediate-band solar cell (IBSC) concept has been recently proposed to enhance the current gain from the solar spectrum while maintaining a large open-circuit voltage. Its main idea is to introduce a partially occupied intermediate band (IB) between the valence band (VB) and conduction band (CB) of the semiconductor absorber, thereby increasing the photocurrent by the additional VB {yields} IB and IB {yields} CB absorptions. The confined electron levels of self-assembled quantum dots (QDs) were proposed as potential candidates for the implementation of such an IB. Here we report experimental and theoretical investigations on In{sub y}Ga{sub 1-y}As dots in a GaAs{sub 1-x}P{sub x} matrix, examining its suitability for acting as IBSCs. The system has the advantage of allowing strain symmetrization within the structure, thus enabling the growth of a large number of defect-free QD layers, despite the significant size mismatch between the dot material and the surrounding matrix. We examine the various conditions related to the optimum functionality of the IBSC, in particular those connected to the optical and electronic properties of the system. We find that the intensity of absorption between QD-confined electron states and host CB is weak because of their localized-to-delocalized character. Regarding the position of the IB within the matrix band gap, we find that, whereas strain symmetrization can indeed permit growth of multiple dot layers, the current repertoire of GaAs{sub 1-x}P{sub x} barrier materials, as well as In{sub y}Ga{sub 1-y} As dot materials, does not satisfy the ideal energetic locations for the IB. We conclude that other QD systems must be considered for QD-IBSC implementations.

Popescu, V.; Bester, G.; Hanna, M. C.; Norman, A. G.; Zunger, A.

2008-11-01T23:59:59.000Z

159

TECHNICAL BASIS FOR EVALUATING SURFACE BARRIERS TO PROTECT GROUNDWATER FROM DEEP VADOSE ZONE CONTAMINATION  

SciTech Connect (OSTI)

The U.S. DOE and its predecessors released nearly 2 trillion liters (450 billion gallons) of contaminated liquid into the vadose zone at the Hanford Site. Some of the contaminants currently reside in the deeper parts of the vadose zone where they are much less accessible to characterization, monitoring, and typical remediation activities. The DOE Richland Operations Office (DOE-RL) prepared a treatability test plan in 2008 to examine remediation options for addressing contaminants in the deep vadose zone; one of the technologies identified was surface barriers (also known as engineered barriers, covers, and caps). In the typical configuration, the contaminants are located relatively close to the surface, generally within 15 m, and thus they are close to the base of the surface barrier. The proximity of the surface barrier under these conditions yielded few concerns about the effectiveness of the barrier at depth, particularly for cases in which the contaminants were in a lined facility. At Hanford, however, some unlined sites have contaminants located well below depths of 15 m. The issue raised about these sites is the degree of effectiveness of a surface barrier in isolating contaminants in the deep vadose zone. Previous studies by Hanford Site and PNNL researchers suggest that surface barriers have the potential to provide a significant degree of isolation of deep vadose zone contaminants. The studies show that the actual degree of isolation is site-specific and depends on many factors, including recharge rates, barrier size, depth of contaminants, geohydrologic properties ofthe sediments, and the geochemical interactions between the contaminants and the sediments. After the DOE-RL treatability test plan was published, Pacific Northwest National Laboratory was contracted to review the information available to support surface barrier evaluation for the deep vadose zone, identify gaps in the information and outcomes necessary to fill the data gaps, and outline tasks to achieve those outcomes. Full understanding of contaminant behavior in the deep vadose zone is constrained by four key data gaps: limited access; limited data; limited time; and the lack of an accepted predictive capability for determining whether surface barriers can effectively isolate deep vadose zone contaminants. Activities designed to fill these data gaps need to have these outcomes: (1) common evaluation methodology that provides a clear, consistent, and defensible basis for evaluating groundwater impacts caused by placement of a surface barrier above deep vadose zone contamination; (2) deep vadose zone data that characterize the lithology, the spatial distribution of moisture and contaminants, the physical, chemical, and biological process that affect the mobility of each contaminant, and the impacts to the contaminants following placement of a surface barrier; (3) subsurface monitoring to provide subsurface characterization of initial conditions and changes that occur during and following remediation activities; and (4) field observations that span years to decades to validate the evaluation methodology. A set of six proposed tasks was identified to provide information needed to address the above outcomes. The proposed tasks are: (1) Evaluation Methodology - Develop common evaluation methodology that will provide a clear, consistent, and defensible basis for evaluating groundwater impacts caused by placement of a surface barrier above deep vadose zone contamination. (2) Case Studies - Conduct case studies to demonstrate the applicability ofthe common evaluation methodology and provide templates for subsequent use elsewhere. Three sites expected to have conditions that would yield valuable information and experience pertinent to deep vadose zone contamination were chosen to cover a range of conditions. The sites are BC Cribs and Trenches, U Plant Cribs, and the T Farm Interim Cover. (3) Subsurface Monitoring Technologies - Evaluate minimally invasive geophysical approaches for delineating subsurface plumes and monitoring their migration in the deep

FAYER JM; FREEDMAN VL; WARD AL; CHRONISTER GB

2010-02-24T23:59:59.000Z

160

The winning ideas for the Fall 2013 Change the World Challenge cover a variety of innovative devices, processes, and technologies. The ten winning ideas include  

E-Print Network [OSTI]

. Weepri A 3-D printing system with educational lessons that empowers young inventors and tinkerers devices, processes, and technologies. The ten winning ideas include: Logikits Logikits is an easy-to-learn of mental illness; a notification email would be sent to the parents. Deborah Lark '17, Nuclear

Salama, Khaled

Note: This page contains sample records for the topic "ideas examine barriers" 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

Diffusion barriers in modified air brazes  

DOE Patents [OSTI]

A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.

Weil, Kenneth Scott; Hardy, John S; Kim, Jin Yong; Choi, Jung-Pyung

2013-04-23T23:59:59.000Z

162

Diffusion barriers in modified air brazes  

DOE Patents [OSTI]

A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.

Weil, Kenneth Scott (Richland, WA); Hardy, John S. (Richland, WA); Kim, Jin Yong (Richland, WA); Choi, Jung-Pyung (Richland, WA)

2010-04-06T23:59:59.000Z

163

Nuclear reactor vessel fuel thermal insulating barrier  

DOE Patents [OSTI]

The reactor vessel of a nuclear reactor installation which is suspended from the cold leg nozzles in a reactor cavity is provided with a lower thermal insulating barrier spaced from the reactor vessel that has a hemispherical lower section that increases in volume from the center line of the reactor to the outer extent of the diameter of the thermal insulating barrier and smoothly transitions up the side walls of the vessel. The space between the thermal insulating harrier and the reactor vessel forms a chamber which can be flooded with cooling water through passive valving to directly cool the reactor vessel in the event of a severe accident. The passive inlet valve for the cooling water includes a buoyant door that is normally maintained sealed under its own weight and floats open when the cavity is Hooded. Passively opening steam vents are also provided.

Keegan, C. Patrick; Scobel, James H.; Wright, Richard F.

2013-03-19T23:59:59.000Z

164

Scarcity of Ideas and R&D Options: Use it, Lose it, or Bank it  

E-Print Network [OSTI]

Strategic Delay in a Real Options Model of R&D Competition,"ideas; imagination; innovation; real options; search models;low cost. Our model is a real options model in the spirit of

Erkal, Nisvan; Scotchmer, Suzanne

2009-01-01T23:59:59.000Z

165

Haha and aha! : creativity, idea generation, improvisational humor, and product design  

E-Print Network [OSTI]

It is widely recognized that innovation and creativity is the new competitive battleground for product development firms. Engineers and product designers are now expected to be highly creative, prolific idea generators in ...

Kudrowitz, Barry M. (Barry Matthew)

2010-01-01T23:59:59.000Z

166

The process of taking ideas into reality, an ex post facto framework  

E-Print Network [OSTI]

The process of taking an idea into reality has long fascinated me. Throughout the course of college, I have had the privilege of helping to create three varying projects: a workshop designing custom-machined clock faces, ...

Rustagi, Kevin Ashok

2011-01-01T23:59:59.000Z

167

Diffusion of ideas, practices, and artifacts : network effects on collective outcomes  

E-Print Network [OSTI]

Important ideas, practices and artifacts often fail to reach their target population efficiently or fail to reach altogether. Surprisingly, most projects aimed to bring technology to underserved communities of the world ...

Barahona, Juan Carlos (Barahona-Martinez)

2007-01-01T23:59:59.000Z

168

Fission barriers and half-lives  

SciTech Connect (OSTI)

We briefly review the development of theoretical models for the calculation of fission barriers and half-lives. We focus on how results of actual calculations in a unified macroscopic-microscopic approach provide an interpretation of the mechanisms behind some of the large number of phenomena observed in fission. As instructive examples we choose studies of the rapidly varying fission properties of elements at the end of the periodic system. 31 refs., 10 figs.

Moeller, P.; Nix, J.R.; Swiatecki, W.J.

1989-01-01T23:59:59.000Z

169

Plastic Schottky-barrier solar cells  

DOE Patents [OSTI]

A photovoltaic cell structure is fabricated from an active medium including an undoped polyacetylene, organic semiconductor. When a film of such material is in rectifying contact with a metallic area electrode, a Schottky-barrier junction is obtained within the body of the cell structure. Also, a gold overlayer passivates a magnesium layer on the undoped polyacetylene film. With the proper selection and location of elements a photovoltaic cell structure and solar cell are obtained.

Waldrop, J.R.; Cohen, M.J.

1981-12-30T23:59:59.000Z

170

Thermal barrier coating resistant to sintering  

DOE Patents [OSTI]

A device (10) is made, having a ceramic thermal barrier coating layer (16) characterized by a microstructure having gaps (18) with a sintering inhibiting material (22) disposed on the columns (20) within the gaps (18). The sintering resistant material (22) is stable over the range of operating temperatures of the device (10), is not soluble with the underlying ceramic layer (16) and is applied by a process that is not an electron beam physical vapor deposition process.

Subramanian, Ramesh; Seth, Brij B.

2004-06-29T23:59:59.000Z

171

THE FICHTEAN IDEA OF THE SCIENCE OF KNOWLEDGE AND THE HUSSERLIAN PROJECT  

E-Print Network [OSTI]

75 THE FICHTEAN IDEA OF THE SCIENCE OF KNOWLEDGE AND THE HUSSERLIAN PROJECT by Jean Hyppolite* Translated from the French by Tom Nemeth Introduction to Hyppolite. The following article by Hyppolite appeared, along with other articles by a... 'dialectical': it is purely contemplative and descriptive, or better, phenomenological in Husserl's sense of the term." 77 78 The Fichtean Idea of the Science of Knowledge and the Husserlian Project Comparisons of philosophical systems are always...

Hyppolite, Jean; Nemeth, Tom (translator)

172

Barrier Coatings for Refractory Metals and Superalloys  

SciTech Connect (OSTI)

In the closed working fluid loop of the proposed Prometheus space nuclear power plant (SNPP), there is the potential for reaction of core and plant structural materials with gas phase impurities and gas phase transport of interstitial elements between superalloy and refractory metal alloy components during service. Primary concerns are surface oxidation, interstitial embrittlement of refractory metals and decarburization of superalloys. In parallel with kinetic investigations, this letter evaluates the ability of potential coatings to prevent or impede communication between reactor and plant components. Key coating requirements are identified and current technology coating materials are reviewed relative to these requirements. Candidate coatings are identified for future evaluation based on current knowledge of design parameters and anticipated environment. Coatings were identified for superalloys and refractory metals to provide diffusion barriers to interstitial transport and act as reactive barriers to potential oxidation. Due to their high stability at low oxygen potential, alumina formers are most promising for oxidation protection given the anticipated coolant gas chemistry. A sublayer of iridium is recommended to provide inherent diffusion resistance to interstitials. Based on specific base metal selection, a thin film substrate--coating interdiffusion barrier layer may be necessary to meet mission life.

SM Sabol; BT Randall; JD Edington; CJ Larkin; BJ Close

2006-02-23T23:59:59.000Z

173

Performing a global barrier operation in a parallel computer  

DOE Patents [OSTI]

Executing computing tasks on a parallel computer that includes compute nodes coupled for data communications, where each compute node executes tasks, with one task on each compute node designated as a master task, including: for each task on each compute node until all master tasks have joined a global barrier: determining whether the task is a master task; if the task is not a master task, joining a single local barrier; if the task is a master task, joining the global barrier and the single local barrier only after all other tasks on the compute node have joined the single local barrier.

Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

2014-12-09T23:59:59.000Z

174

Biointrusion test plan for the Permanent Isolation Surface Barrier Prototype  

SciTech Connect (OSTI)

This document provides a testing and monitoring plan for the biological component of the prototype barrier slated for construction at the Hanford Site. The prototype barrier is an aboveground structure engineered to demonstrate the basic features of an earthen cover system. It is designed to permanently isolate waste from the biosphere. The features of the barrier include multiple layers of soil and rock materials and a low-permeability asphalt sublayer. The surface of the barrier consists of silt loam soil, covered with plants. The barrier sides are reinforced with rock or coarse earthen-fill to protect against wind and water erosion. The sublayers inhibit plant and animal intrusion and percolation of water. A series of tests will be conducted on the prototype barrier over the next several years to evaluate barrier performance under extreme climatic conditions. Plants and animals will play a significant role in the hydrologic and water and wind erosion characteristics of the prototype barrier. Studies on the biological component of the prototype barrier will include work on the initial revegetation of the surface, continued monitoring of the developing plant community, rooting depth and dispersion in the context of biointrusion potential, the role of plants in the hydrology of the surface and toe regions of the barrier, the role of plants in stabilizing the surface against water and wind erosion, and the role of burrowing animals in the hydrology and water and wind erosion of the barrier.

Link, S.O.; Cadwell, L.L.; Brandt, C.A.; Downs, J.L.; Rossi, R.E.; Gee, G.W.

1994-04-01T23:59:59.000Z

175

Soil Insulation For Barrier Layer Protection In Landfill Covers  

E-Print Network [OSTI]

Landfill covers are designed to isolate waste from the environment by incorporating low-permeability barrier layers. The barrier layer minimizes and controls gas escaping from the waste and the amount of infiltrating moisture available for leachate generation. Barrier layers are typically designed and constructed of a thick layer of compacted fine-grain native soil material or a manufactured geosynthetic clay liner. The barrier layer must be protected from frost damage. Freezing of a compacted soil layer has been shown to cause quick and irreversible degradation. Large increases in permeability have been demonstrated in compacted clay barriers subjected to a minimum number of freezing and thawing cycles. Design methods to protect the barrier layer from frost damage have not been addressed in the research literature. A design procedure is addressed in this paper that determines the thickness of soil required to protect a barrier layer. The procedure is based on sitespecific temperature ...

Gregory Smith Roy

176

Alternative barrier layers for surface covers in dry climates  

SciTech Connect (OSTI)

Surface covers are one of the most widespread remediation and waste management options in all climates. Barrier layers to limit percolation through cover systems are principal features of engineered, multi-component cover designs. Conventional barrier layer components developed for humid climates have limitations in dry climates. One alternative barrier layer is a capillary barrier, which consists of a fine-over-coarse soil arrangement. The capacity of capillary barrier to laterally divert downward moving water is the key to their success. Another alternative is a dry barrier, in which atmospheric air is circulated through a coarse layer within the cover to remove water vapor. Incorporating a coarse layer which stores water for subsequent removal by air flow reduces the requirements for the air flow velocity and increases the applicability of the dry barrier.

Stormont, J.C.

1994-09-01T23:59:59.000Z

177

National Postirradiation Examination Workshop Report  

SciTech Connect (OSTI)

A National Post-Irradiation-Examination (PIE) Workshop was held March 29-30, 2011, in Washington D.C., stimulated by the DOE Acting Assistant Secretary for Nuclear Energy approval on January 31, 2011 of the “Mission Need Statement for Advanced Post-Irradiation Examination Capability”. As stated in the Mission Need, “A better understanding of nuclear fuels and material performance in the nuclear environment, at the nanoscale and lower, is critical to the development of innovative fuels and materials required for tomorrow’s nuclear energy systems.” (2011) Developing an advanced post-irradiation capability is the most important thing we can do to advance nuclear energy as an option to meeting national energy goals. Understanding the behavior of fuels and materials in a nuclear reactor irradiation environment is the limiting factor in nuclear plant safety, longevity, efficiency, and economics. The National PIE Workshop is part of fulfilling or addressing Department of Energy (DOE) missions in safe and publically acceptable nuclear energy. Several presentations were given during the opening of the workshop. Generally speaking, these presentations established that we cannot continue to rely on others in the world to provide the capabilities we need to move forward with nuclear energy technology. These presentations also generally identified the need for increased microstructural understanding of fuels and materials to be coupled with modeling and simulation, and increased accessibility and infrastructure to facilitate the interaction between national laboratories and participating organizations. The overall results of the work of the presenters and panels was distilled into four primary needs 1. Understanding material changes in the extreme nuclear environment at the nanoscale. Nanoscale studies have significant importance due to the mechanisms that cause materials to degrade, which actually occur on the nanoscale. 2. Enabling additional proficiency in experimentation and analysis through robust modeling coupled with advanced characterization. 3. Advancing the infrastructure and accessibility of physical and administrative systems needed to meet the needs of participating organizations that are subject to different time cycles and constraints that make working and collaborating the national laboratories challenging. 4. Pursuing in-situ analysis and instrumentation to support the examination of dynamic changes to materials’ microstructure, deformation, and surface effects as they occur with time scales rather than the static comparison offered by current PIE methods. This Workshop Report responds to the research challenges for advanced/future PIE needs for nuclear materials development outlined by Energy Secretary Chu and the DOE-NE Research and Development Roadmap report, which was delivered to Congress in April 2010, (DOE-NE, 2010) by identifying the technial needs for fuel and material development specifically related to PIE. The information from the panels address these research challenges by identifying specific needs related to each of the topical areas. The focus of the Workshop was to identify gaps in the enabling capabilities for nuclear energy research and to identify high-priority fundamental capabilities to enable research to be completed that would likely have high impact on enabling nuclear energy as a significant contributor to energy production portfolios.

Schulthess, Jason L

2011-06-01T23:59:59.000Z

178

Workshop ideas  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30NaturalThousandExtensions (Billion2008 2009230,456 271,785 312,003Trading and

179

Workshop ideas  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30NaturalThousandExtensions (Billion2008 2009230,456 271,785 312,003Trading

180

Surfactant ideas  

Office of Scientific and Technical Information (OSTI)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation In closing, an overarchingInformation science.govInformation* -C A L

Note: This page contains sample records for the topic "ideas examine barriers" 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

GAO cites barriers to Romanian ventures  

SciTech Connect (OSTI)

This paper reports that Romania needs to modernize its energy sector and increase production to help implement free market reforms and invigorate its economy. In a report to Congress, GAO the despite the Romanian government's efforts to reform the energy sector and improve the country's business climate, impediments persist to U.S. Trade with and investment in Romania. The barriers include a lack of a comprehensive energy strategy; underdeveloped legal and business infrastructures, uncertain economic and political conditions, and the absence of a U.S. most favored nation trade status.

Not Available

1992-10-19T23:59:59.000Z

182

Thermal barrier coating resistant to sintering  

DOE Patents [OSTI]

A device (10) having a ceramic thermal barrier coating layer (16) characterized by a microstructure having gaps (18) with a sintering inhibiting material (22) disposed on the columns (20) within the gaps (18). The sintering resistant material (22) is stable over the range of operating temperatures of the device (10) and is not soluble with the underlying ceramic layer (16). For a YSZ ceramic layer (16) the sintering resistant layer (22) may preferably be aluminum oxide or yttrium aluminum oxide, deposited as a continuous layer or as nodules.

Subramanian, Ramesh (Orlando, FL); Sabol, Stephen M. (Orlando, FL)

2001-01-01T23:59:59.000Z

183

Coastal Barrier Resources Act | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreisVolcanicPower Address:ClimaticCoalogix Inc Jump to:Barrier

184

Air Barriers for Residential and Commercial Buildings  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartment ofEnergy Natural Gas: Transmission, StorageIndustry andAir Barriers

185

Highway noise reduction by barrier walls  

E-Print Network [OSTI]

's Variables 3. Noise Reduction and Noise Reduction Factor 4. Relationship Between Noise Attenuation and d 5. Rettinger's Variables 6. Relationship of Sound-Level Reduction and v 7. Basic Principles in Sound-Transmission Loss 8. The Mass Law Relationship... that the barrier wall is acoustically opaque (i. e. , impermeable to sound waves). Purcell (8) found that the noise transmission loss of a wall was a measure of the ratio of the acoustical energy transmitted through the wall to the acoustical energy incident...

Young, Murray F

1971-01-01T23:59:59.000Z

186

Determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation  

DOE Patents [OSTI]

Methods, apparatus, and products are disclosed for determining when a set of compute nodes participating in a barrier operation on a parallel computer are ready to exit the barrier operation that includes, for each compute node in the set: initializing a barrier counter with no counter underflow interrupt; configuring, upon entering the barrier operation, the barrier counter with a value in dependence upon a number of compute nodes in the set; broadcasting, by a DMA engine on the compute node to each of the other compute nodes upon entering the barrier operation, a barrier control packet; receiving, by the DMA engine from each of the other compute nodes, a barrier control packet; modifying, by the DMA engine, the value for the barrier counter in dependence upon each of the received barrier control packets; exiting the barrier operation if the value for the barrier counter matches the exit value.

Blocksome, Michael A. (Rochester, MN)

2011-12-20T23:59:59.000Z

187

Underground barrier construction apparatus with soil-retaining shield  

DOE Patents [OSTI]

An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably one which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground, a shield means for maintaining the void, and injection means for inserting barrier-forming material into the void. In one embodiment, the digging means is a continuous cutting chain. Mounted on the continuous cutting chain are cutter teeth for cutting through soil and discharge paddles for removing the loosened soil. This invention includes a barrier placement machine, a method for building an underground horizontal containment barrier using the barrier placement machine, and the underground containment system. Preferably the underground containment barrier goes underneath and around the site to be contained in a bathtub-type containment.

Gardner, Bradley M. (Idaho Falls, ID); Smith, Ann Marie (Pocatello, ID); Hanson, Richard W. (Spokane, WA); Hodges, Richard T. (Deer Park, WA)

1998-01-01T23:59:59.000Z

188

Underground barrier construction apparatus with soil-retaining shield  

DOE Patents [OSTI]

An apparatus is described for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably one which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground, a shield means for maintaining the void, and injection means for inserting barrier-forming material into the void. In one embodiment, the digging means is a continuous cutting chain. Mounted on the continuous cutting chain are cutter teeth for cutting through soil and discharge paddles for removing the loosened soil. This invention includes a barrier placement machine, a method for building an underground horizontal containment barrier using the barrier placement machine, and the underground containment system. Preferably the underground containment barrier goes underneath and around the site to be contained in a bathtub-type containment. 17 figs.

Gardner, B.M.; Smith, A.M.; Hanson, R.W.; Hodges, R.T.

1998-08-04T23:59:59.000Z

189

Ultraviolet-B radiation enhancement in dielectric barrier discharge based xenon chloride exciplex source by air  

SciTech Connect (OSTI)

A single barrier dielectric barrier discharge tube of quartz with multi-strip Titanium-Gold (Ti-Au) coatings have been developed and utilized for ultraviolet-B (UV-B) radiation production peaking at wavelength 308?nm. The observed radiation at this wavelength has been examined for the mixtures of the Xenon together with chlorine and air admixtures. The gas mixture composition, chlorine gas content, total gas pressure, and air pressure dependency of the UV intensity, has been analyzed. It is found that the larger concentration of Cl{sub 2} deteriorates the performance of the developed source and around 2% Cl{sub 2} in this source produced optimum results. Furthermore, an addition of air in the xenon and chlorine working gas environment leads to achieve same intensity of UV-B light but at lower working gas pressure where significant amount of gas is air.

Gulati, P., E-mail: pgulati1512@gmail.com [CSIR-Central Electronics Engineering Research Institute (CSIR-CEERI), Pilani, Rajasthan-333031 (India); Department of Physics, Banasthali University, P.O. Banasthali Vidyapith, Rajasthan 304022 (India); Prakash, R.; Pal, U. N.; Kumar, M. [CSIR-Central Electronics Engineering Research Institute (CSIR-CEERI), Pilani, Rajasthan-333031 (India); Vyas, V. [Department of Physics, Banasthali University, P.O. Banasthali Vidyapith, Rajasthan 304022 (India)

2014-07-07T23:59:59.000Z

190

Multiple capillary biochemical analyzer with barrier member  

DOE Patents [OSTI]

A multiple capillary biochemical analyzer is disclosed for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal-to-noise ratio. 12 figs.

Dovichi, N.J.; Zhang, J.Z.

1996-10-22T23:59:59.000Z

191

Corrosion of barrier materials in seawater environments  

SciTech Connect (OSTI)

A brief review has been carried out on the performance of barrier materials for low-level radioactive wastes in seawater environments. The environments include those for shallower coastal waters as well as the deep ocean (down to 3800 m). The review is mainly focused on metallic materials since they are the most common for seawater service and they have the largest data base. Information from the literature is usually pertinent to shallower coastal locations, but there is a valuable source of corrosion data obtained from several studies of metallic specimens exposed to ocean-bed conditions. In addition, the corrosion of carbon steel barriers has been evaluated for actual waste containers that were retrieved from previously-used disposal sites in the Atlantic and Pacific Oceans. Of the metallic materials studied, carbon steel showed the least corrosion resistance. Failure by non-uniform attack in a typical waste container could occur in as little as 25 y in some ocean environments ` Penetration by local attack, such as pitting and crevice corrosion resistance was also observed for more expensive materials such as low-alloy steels, stainless steels, titanium alloys, zirconium alloys, copper alloys, nickel alloys, aluminum alloys, and lead alloys.

Heiser, J.H.; Soo, P.

1995-07-01T23:59:59.000Z

192

Thermal barrier coating having high phase stability  

DOE Patents [OSTI]

A device (10) comprising a substrate (22) having a deposited ceramic thermal barrier coating layer (20) characterized by a microstructure having gaps (28) where the thermal barrier coating (20) consists essentially of a pyrochlore crystal structure having a chemical formula consisting essentially of A.sup.n+.sub.2-x B.sup.m+.sub.2+x O.sub.7-y, where A is selected from the group of elements selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and mixtures thereof; where B is selected from the group of elements selected from Zr, Hf, Ti and mixtures thereof; n and m are the valence of A and B respectively, and for -0.5.ltoreq.x.ltoreq.0.5, ##EQU1## and excluding the following combinations for x=0, y=0: A=La and B=Zr; A=La and B=Hf; A=Gd and B=Hf; and A=Yb and B=Ti.

Subramanian, Ramesh (Oviedo, FL)

2001-01-01T23:59:59.000Z

193

Quantum calculation of Coulomb reorientation and near-barrier fusion  

E-Print Network [OSTI]

We investigate the role of deformation on the fusion probability around the barrier using the Time-Dependent Hartree-Fock theory with a full Skyrme force. We obtain a distribution of fusion probabilities around the nominal barrier due to the different contributions of the various orientations of the deformed nucleus at the touching point. It is also shown that the long range Coulomb reorientation reduces the fusion probability around the barrier.

Cédric Simenel; Michael Bender; Philippe Chomaz; Thomas Duguet; Gilles De France

2006-05-08T23:59:59.000Z

194

Test device for measuring permeability of a barrier material  

DOE Patents [OSTI]

A test device for measuring permeability of a barrier material. An exemplary device comprises a test card having a thin-film conductor-pattern formed thereon and an edge seal which seals the test card to the barrier material. Another exemplary embodiment is an electrical calcium test device comprising: a test card an impermeable spacer, an edge seal which seals the test card to the spacer and an edge seal which seals the spacer to the barrier material.

Reese, Matthew; Dameron, Arrelaine; Kempe, Michael

2014-03-04T23:59:59.000Z

195

Effects of Alloy Disorder on Schottky-Barrier Heights  

E-Print Network [OSTI]

PHYSICAL REVIEW B VOLUME 35, NUMBER 18 15 JUNE 1987-II Effects of alloy disorder on Schottky-barrier heights Charles W. Myles Department of Physics and Engineering Physics, Texas Tech University, Lubbock, Texas 79409 Shang-Fen Ren* and Roland E...~ The effects of alloy disorder on the Schottky barriers at semiconductor-alloy ?metal interfaces are investigated within the defect model of Schottky-barrier formation. The deep levels and the associ- ated wave functions for surface antisite defects, which...

MYLES, CW; REN, SF; Allen, Roland E.; REN, SY.

1987-01-01T23:59:59.000Z

196

K West basin isolation barrier leak rate test  

SciTech Connect (OSTI)

This document establishes the procedure for performing the acceptance test on the two isolation barriers being installed in K West basin. This acceptance test procedure shall be used to: First establish a basin water loss rate prior to installation of the two isolation barriers between the main basin and the discharge chute in K-Basin West. Second, perform an acceptance test to verify an acceptable leakage rate through the barrier seals.

Whitehurst, R.; McCracken, K.; Papenfuss, J.N.

1994-10-31T23:59:59.000Z

197

Examining the market potential for natural-gas-powered trucks : barriers and opportunities for promoting environmental sustainability and economic prosperity.  

E-Print Network [OSTI]

??Over the past decade, public concerns have grown over America's energy use and production. Pushes towards more environmentally friendly and sustainable sources of energy have… (more)

Hazlett, Ryan

2013-01-01T23:59:59.000Z

198

AC 2012-4150: THE INTERLACE PROJECT: EXAMINING THE BAR-RIERS TO IMPLEMENTING COLLABORATIVE, INQUIRY-BASED IN-  

E-Print Network [OSTI]

for assisting teachers with performing engineering education and communicating robotics concepts to students, INQUIRY-BASED IN- VESTIGATIONS Dr. Morgan M. Hynes, Tufts University Morgan Hynes is a Research Assistant time working at the Sarah Greenwood K-8 school (a Boston Public School) assisting teachers

199

Idea and image: shades of light and dark in selected Poe tales  

E-Print Network [OSTI]

, and Enclosure in Poe's 'Ligeia' and 'Morella. '" The idea of enclosure could be tied to darkness, but Engel does not explore darkness as a concept in either of his articles. In "The Crowd as No Man's Land: Gas-Light and Poe's Symbolist Effects, " J. G. Keogh... IDEA AND IMAGE: SHADES OF LIGHT AND DARK IN SELECTED POE TALES A Thesis by AMARYLLIS RUTH STEPHENSON Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER...

Stephenson, Amaryllis Ruth

1989-01-01T23:59:59.000Z

200

Overcoming Processing Cost Barriers of High-Performance Lithium...  

Broader source: Energy.gov (indexed) [DOE]

Office Merit Review 2014: Overcoming Processing Cost Barriers of High-Performance Lithium-Ion Battery Electrodes Vehicle Technologies Office Merit Review 2014:...

Note: This page contains sample records for the topic "ideas examine barriers" 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

Barriers to CHP with Renewable Portfolio Standards, Draft White...  

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

helped spur the growth of renewable energy projects, including solar, wind, and biomass power. This report aims to determine the barriers to CHP that exist within state RPS...

202

alveolar epithelial barrier: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Lake 3Transmission through a Quantum Dynamical Delta Barrier T. Brandes1 ? and J. Robinson Department Levi, Anthony F. J. 199 Nitrate Removal in NITREXTM Permeable Reactive...

203

Options for Energy Efficiency in India and Barriers to Their...  

Open Energy Info (EERE)

to Their Adoption: A Scoping Study Jump to: navigation, search Name Options for Energy Efficiency in India and Barriers to Their Adoption: A Scoping Study AgencyCompany...

204

New Air and Water-Resistive Barrier Technologies for Commercial...  

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

New Air and Water-Resistive Barrier Technologies for Commercial Buildings Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN Partners: 3M - Minneapolis, MN DOE Funding:...

205

Recent Research to Address Technical Barriers to Increased Use...  

Broader source: Energy.gov (indexed) [DOE]

Research to Address Technical Barriers to Increased Use of Biodiesel Wendy Clark & Bob McCormick National Renewable Energy Laboratory Golden, Colorado August 23, 2005 What is...

206

Panel 4, Grid-Scale Storage Technologies: Regulatory Barriers...  

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

Grid-scale Storage Technologies Regulatory Barriers and Policy Instruments Hydrogen Energy Storage for Grid and Transportation Services May 15 th , 2014 Sacramento, CA Demand 599...

207

Ion beam assisted deposition of thermal barrier coatings  

DOE Patents [OSTI]

Methods and apparatus for depositing thermal barrier coatings on gas turbine blades and vanes using Electron Beam Physical Vapor Deposition (EBPVD) combined with Ion Beam Assisted Deposition (IBAD).

Youchison, Dennis L. (Albuquerque, NM); McDonald, Jimmie M. (Albuquerque, NM); Lutz, Thomas J. (Albuquerque, NM); Gallis, Michail A. (Albuquerque, NM)

2010-11-23T23:59:59.000Z

208

Overcoming Processing Cost Barriers of High-Performance Lithium...  

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

Cost Barriers of High-Performance Lithium-Ion Battery Electrodes 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

209

Moving North Texas Forward by Addressing Alternative Fuel Barriers...  

Broader source: Energy.gov (indexed) [DOE]

MOVING NORTH TEXAS FORWARD BY ADDRESSING ALTERANATIVE FUEL BARRIERS Presenter: Pamela Burns North Central Texas Council of Governments June 20, 2014 P.I. Mindy Mize Project ID...

210

Renewable energy in Brazil: opportunities, barriers, and remedies  

SciTech Connect (OSTI)

An overview of the major conclusions is presented according to the goals of the study; and contents of the various chapters of the report are outlined. All major energy planning organizations in Brazil at the federal and state level perceive an urgent need for petroleum substitution by means of energy-efficient technology, coal, hydroelectricity, biomass, solar, and wind. Technologies and applications considered of high priority for US/Brazilian cooperative efforts are the following: Energy-efficient technology, used with indigenous hydroelectricity, especially heat pumps to provide (1) low temperature hot water for industrial applications, and (2) air conditioning and hot water for residential and commercial applications; solar thermal technology for low and intermediate temperature industrial process heat, and for crop drying; and small wind turbines and photovoltaic power systems for irrigation pumping and other rural applications. Certain technologies were excluded from the scope of the study by mutual agreement because a great deal of activity in such technologies was already taking place in Brazil, or because commercialization prospects seemed remote, or because of regulatory barriers. Energy conversion systems employing biomass, small- and large-scale hydropower, ocean thermal energy gradients, and cogeneration systems are not examined.

Jhirad, D.J.; Rutter, W.

1982-03-01T23:59:59.000Z

211

The Cementitious Barriers Partnership (CBP) Software Toolbox Capabilities In Assessing The Degradation Of Cementitious Barriers  

SciTech Connect (OSTI)

The Cementitious Barriers Partnership (CBP) Project is a multi-disciplinary, multi-institutional collaboration supported by the U.S. Department of Energy (US DOE) Office of Tank Waste and Nuclear Materials Management. The CBP program has developed a set of integrated tools (based on state-of-the-art models and leaching test methods) that help improve understanding and predictions of the long-term structural, hydraulic and chemical performance of cementitious barriers used in nuclear applications. Tools selected for and developed under this program have been used to evaluate and predict the behavior of cementitious barriers used in near-surface engineered waste disposal systems for periods of performance up to 100 years and longer for operating facilities and longer than 1000 years for waste disposal. The CBP Software Toolbox has produced tangible benefits to the DOE Performance Assessment (PA) community. A review of prior DOE PAs has provided a list of potential opportunities for improving cementitious barrier performance predictions through the use of the CBP software tools. These opportunities include: 1) impact of atmospheric exposure to concrete and grout before closure, such as accelerated slag and Tc-99 oxidation, 2) prediction of changes in Kd/mobility as a function of time that result from changing pH and redox conditions, 3) concrete degradation from rebar corrosion due to carbonation, 4) early age cracking from drying and/or thermal shrinkage and 5) degradation due to sulfate attack. The CBP has already had opportunity to provide near-term, tangible support to ongoing DOE-EM PAs such as the Savannah River Saltstone Disposal Facility (SDF) by providing a sulfate attack analysis that predicts the extent and damage that sulfate ingress will have on the concrete vaults over extended time (i.e., > 1000 years). This analysis is one of the many technical opportunities in cementitious barrier performance that can be addressed by the DOE-EM sponsored CBP software tools. Modification of the existing tools can provide many opportunities to bring defense in depth in prediction of the performance of cementitious barriers over time.

Flach, G. P. [Savannah River Site (SRS), Aiken, SC (United States); Burns, H. H. [Savannah River Site (SRS), Aiken, SC (United States); Langton, C. [Savannah River Site (SRS), Aiken, SC (United States); Smith, F. G. III [Savannah River Site (SRS), Aiken, SC (United States); Brown, K. G. [Vanderbilt University, Nashville, TN (United States); Kosson, D. S. [Vanderbilt University, Nashville, TN (United States); Garrabrants, A. C. [Vanderbilt University, Nashville, TN (United States); Sarkar, S. [Vanderbilt University, Nashville, TN (United States); van der Sloot, H. [Hans van der Sloot Consultancy (The Netherlands); Meeussen, J. C.L. [Nuclear Research and Consultancy Group, Petten (The Netherlands); Samson, E. [SIMCO Technologies Inc. , 1400, boul. du Parc - Technologique , Suite 203, Quebec (Canada); Mallick, P. [United States Department of Energy, 1000 Independence Ave. SW , Washington, DC (United States); Suttora, L. [United States Department of Energy, 1000 Independence Ave. SW , Washington, DC (United States); Esh, D. W. [U .S. Nuclear Regulatory Commission , Washington, DC (United States); Fuhrmann, M. J. [U .S. Nuclear Regulatory Commission , Washington, DC (United States); Philip, J. [U .S. Nuclear Regulatory Commission , Washington, DC (United States)

2013-01-11T23:59:59.000Z

212

The Cementitious Barriers Partnership (CBP) Software Toolbox Capabilities in Assessing the Degradation of Cementitious Barriers - 13487  

SciTech Connect (OSTI)

The Cementitious Barriers Partnership (CBP) Project is a multi-disciplinary, multi-institutional collaboration supported by the U.S. Department of Energy (US DOE) Office of Tank Waste and Nuclear Materials Management. The CBP program has developed a set of integrated tools (based on state-of-the-art models and leaching test methods) that help improve understanding and predictions of the long-term structural, hydraulic and chemical performance of cementitious barriers used in nuclear applications. Tools selected for and developed under this program have been used to evaluate and predict the behavior of cementitious barriers used in near-surface engineered waste disposal systems for periods of performance up to 100 years and longer for operating facilities and longer than 1000 years for waste disposal. The CBP Software Toolbox has produced tangible benefits to the DOE Performance Assessment (PA) community. A review of prior DOE PAs has provided a list of potential opportunities for improving cementitious barrier performance predictions through the use of the CBP software tools. These opportunities include: 1) impact of atmospheric exposure to concrete and grout before closure, such as accelerated slag and Tc-99 oxidation, 2) prediction of changes in K{sub d}/mobility as a function of time that result from changing pH and redox conditions, 3) concrete degradation from rebar corrosion due to carbonation, 4) early age cracking from drying and/or thermal shrinkage and 5) degradation due to sulfate attack. The CBP has already had opportunity to provide near-term, tangible support to ongoing DOE-EM PAs such as the Savannah River Saltstone Disposal Facility (SDF) by providing a sulfate attack analysis that predicts the extent and damage that sulfate ingress will have on the concrete vaults over extended time (i.e., > 1000 years). This analysis is one of the many technical opportunities in cementitious barrier performance that can be addressed by the DOE-EM sponsored CBP software tools. Modification of the existing tools can provide many opportunities to bring defense in depth in prediction of the performance of cementitious barriers over time. (authors)

Flach, G.P.; Burns, H.H.; Langton, C.; Smith, F.G. III [Savannah River National Laboratory, Savannah River Site, Aiken SC 29808 (United States)] [Savannah River National Laboratory, Savannah River Site, Aiken SC 29808 (United States); Brown, K.G.; Kosson, D.S.; Garrabrants, A.C.; Sarkar, S. [Vanderbilt University, Nashville, TN (United States)] [Vanderbilt University, Nashville, TN (United States); Van der Sloot, H. [Hans Van der Sloot Consultancy (Netherlands)] [Hans Van der Sloot Consultancy (Netherlands); Meeussen, J.C.L. [Nuclear Research and Consultancy Group, Petten (Netherlands)] [Nuclear Research and Consultancy Group, Petten (Netherlands); Samson, E. [SIMCO Technologies Inc., 1400, boul. du Parc-Technologique, Suite 203, Quebec (Canada)] [SIMCO Technologies Inc., 1400, boul. du Parc-Technologique, Suite 203, Quebec (Canada); Mallick, P.; Suttora, L. [United States Department of Energy, 1000 Independence Ave. SW, Washington, DC (United States)] [United States Department of Energy, 1000 Independence Ave. SW, Washington, DC (United States); Esh, D.W.; Fuhrmann, M.J.; Philip, J. [U.S. Nuclear Regulatory Commission, Washington, DC (United States)] [U.S. Nuclear Regulatory Commission, Washington, DC (United States)

2013-07-01T23:59:59.000Z

213

i Chen's latest research idea came to him in the produce aisle--in  

E-Print Network [OSTI]

, it seems, is convening to witness the inauguration of President Barack Obama." continued on page 7 #12;TheRecord on page 8 By Record Staff history's long view Brinkley Q & A on Obama | 7 capital ideas Advice from of several thousand gathered on the steps of Low Library to watch the inauguration of President Barack Obama

Shepard, Kenneth

214

Barack Obama and the African Idea: Topology, Tropology, and Stasis in Spatial Counter Narratives  

E-Print Network [OSTI]

, this dissertation traces the visions of Africa implicit in Obama's rhetoric and politics. The study analyzes Obama's ideas of Africa in three stages of his political career; before he was a national figure, during his campaigns, and in his Africa policy after he...

Chirindo, Kundai V

2012-12-31T23:59:59.000Z

215

Getting started -protecting and funding your ideas 21st April 2009  

E-Print Network [OSTI]

Getting started - protecting and funding your ideas 21st April 2009 Venue: Invent, DCU issues faced by a start up including how to protect its intellectual property. 10.30 Måire Cunningham rights? · How to protect these rights · Best practice 11.10 Måire Cunningham, Partner, Beauchamps

Humphrys, Mark

216

CS55N: Ten Ideas in Computer Security Fall 2005 Course Project  

E-Print Network [OSTI]

://research.microsoft.com/users/jpincus/beyond-stack-smashing.pdf · http://www.phrack.org/phrack/56/p56-0x0e · http://www.securityfocus.com/archive/1/7480 Web Site Security. Write a report describing at least five ideas in exploiting web site weaknesses. Propose a single

Boneh, Dan

217

RESEARCH PROJECTS & IDEAS FOR FALL 2013 Soil and Water Lab, Ecohydrology Group (compiled by Todd Walter)  

E-Print Network [OSTI]

NEW (ish) Aquatic Ecology and Hydraulic Fracturing (WRI/DEC, other) Maya Field work done; counting1 RESEARCH PROJECTS & IDEAS FOR FALL 2013 Soil and Water Lab, Ecohydrology Group (compiled by Todd and N- treatments Cayuga Lake watershed modeling (Cornell) Erin with Becky, Dan, and Brian Need to start

Walter, M.Todd

218

April 28, 2005 Itty-Bitty and Shrinking, Fusion Device Has Big Ideas  

E-Print Network [OSTI]

and slams them together to produce helium. Unlike earlier claims of tabletop fusion - "cold fusion," in 1989April 28, 2005 Itty-Bitty and Shrinking, Fusion Device Has Big Ideas By KENNETH CHANG Correction nuclear fusion - the same process that powers the sun - in a footlong cylinder just five inches

219

6 www.sandia.gov The idea drove a wave of technology that transformed  

E-Print Network [OSTI]

6 www.sandia.gov The idea drove a wave of technology that transformed society so that today, people initiate the jump to the next technology curve sooner and with less risk," Leland says. An `epic effort' Advances in electronic computing technology have played a crucial role in assuring national security

220

WAVES OC514 Spring 2012 P.B. Rhines Term project ideas  

E-Print Network [OSTI]

WAVES OC514 Spring 2012 P.B. Rhines Term project ideas 10 Apr 2012 1. Coastal trapped waves signals, seasonal cycles, wind-driven signals 2. ENSO (el Nino/Southern Oscillation) and equatorial waves events? Atmospheric Kelvin and Rossby waves bridging from one ocean to the next. Gill model

Note: This page contains sample records for the topic "ideas examine barriers" 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

People's Physics book 3e Ch 19-1 The Big Ideas  

E-Print Network [OSTI]

People's Physics book 3e Ch 19-1 The Big Ideas Heat is a form of energy transfer. It can change). Thermodynamics is the study of heat engines. Any engine or power plant obeys the laws of thermodynamics by the expanding gas. Work can be done on the gas in order to compress it. #12;People's Physics book 3e Ch 19

California at Santa Cruz, University of

222

People's Physics Book 3e Ch 14-1 The Big Idea  

E-Print Network [OSTI]

People's Physics Book 3e Ch 14-1 The Big Idea For static electric charges, the electromagnetic a loop of wire generate currents in that wire; this is how electric power generators work. Likewise field is pointing. Be sure to use your right hand! #12;People's Physics Book 3e Ch 14-2 o Right Hand

California at Santa Cruz, University of

223

Be creative and produce a winning business idea or tool to help blind  

E-Print Network [OSTI]

Be creative and produce a winning business idea or tool to help blind people succeed in tomorrow's economy! Working together to support blind and partially sighted people Open to all students Prize for winning team! Can you make a blind bit of difference to me? To enter the competition, scan this code

Anderson, Jim

224

Powerful Ideas Virtually all the power that goes into a modern processor comes  

E-Print Network [OSTI]

nodes (which have no internal power man- agement) were constructed by inverting one case and using metal years, we have demonstrated new com- piler technology that can annotate a program with worst-case powerPowerful Ideas Virtually all the power that goes into a modern processor comes out as heat. Circuit

Dietz, Henry G. "Hank"

225

UBS 2013. All rights reserved. You're full of energy and ideas.  

E-Print Network [OSTI]

© UBS 2013. All rights reserved. You're full of energy and ideas. And that's just what we in the class of 2015 (juniors) with a minimum 3.4 GPA are invited to apply online at www.ubs.com/graduates (job

Plotkin, Joshua B.

226

Thermal barrier coatings for turbine components  

DOE Patents [OSTI]

A turbine component, such as a turbine blade having a metal substrate (22) is coated with a metal MCrAlY alloy layer (24) and then a thermal barrier layer (20) selected from LaAlO.sub.3, NdAlO.sub.3, La.sub.2 Hf.sub.2 O.sub.7, Dy.sub.3 Al.sub.5 O.sub.12, HO.sub.3 Al.sub.3 O.sub.12, ErAlO.sub.3, GdAlO.sub.3, Yb.sub.2 Ti.sub.2 O.sub.7, LaYbO.sub.3, Gd.sub.2 Hf.sub.2 O.sub.7 or Y.sub.3 Al.sub.5 O.sub.12.

Subramanian, Ramesh (Oviedo, FL); Sabol, Stephen M. (Orlando, FL); Goedjen, John G. (Oviedo, FL); Sloan, Kelly M. (Bethesda, MD); Vance, Steven J. (Orlando, FL)

2002-01-01T23:59:59.000Z

227

ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS  

SciTech Connect (OSTI)

This slideshow presents work intended to: Scale-up the Generation -1 UBT to 1+meter width full-scale manufacturing; Develop a Generation-2 UBT on the pilot line, targeting improved performance, longer lifetime and lower cost; Transfer Generation-2 UBT from the pilot line to the full-scale manufacturing line in 2014; and Validate service life of Generation-1 UBT for the 25+ year lifetime. 3M has scaled up UBT for production at 1.2 meter width. 3M is conducting extensive lifetime studies including: –Evaluation of customer processing and installation conditions; –Indoor accelerated testing of UBT film and full CIGS modules; –Outdoor testing of UBT film and CIGS modules. Results have been used to improve ultra barrier film performance for flex module applications.

Schubert, Charlene

2013-01-09T23:59:59.000Z

228

Thermal barrier coating resistant to sintering  

DOE Patents [OSTI]

A device (10) is made, having a ceramic thermal barrier coating layer (16) characterized by a microstructure having gaps (18) with a sintering inhibiting material (22) disposed on the columns (20) within the gaps (18). The sintering resistant material (22) is stable over the range of operating temperatures of the device (10), is not soluble with the underlying ceramic layer (16) and is applied by a process that is not an electron beam physical vapor deposition process. The sintering inhibiting material (22) has a morphology adapted to improve the functionality of the sintering inhibiting material (22), characterized as continuous, nodule, rivulet, grain, crack, flake and combinations thereof and being disposed within at least some of the vertical and horizontal gaps.

Subramanian, Ramesh; Seth, Brig B.

2005-08-23T23:59:59.000Z

229

Electrical insulator assembly with oxygen permeation barrier  

DOE Patents [OSTI]

A high-voltage electrical insulator for electrically insulating a thermoelectric module in a spacecraft from a niobium-1% zirconium alloy wall of a heat exchanger filled with liquid lithium while providing good thermal conductivity between the heat exchanger and the thermoelectric module. The insulator has a single crystal alumina layer (SxAl[sub 2]O[sub 3], sapphire) with a niobium foil layer bonded thereto on the surface of the alumina crystal facing the heat exchanger wall, and a molybdenum layer bonded to the niobium layer to act as an oxygen permeation barrier to preclude the oxygen depleting effects of the lithium from causing undesirable niobium-aluminum intermetallic layers near the alumina-niobium interface. 3 figures.

Van Der Beck, R.R.; Bond, J.A.

1994-03-29T23:59:59.000Z

230

The Influence of Dust on the Absorptivity of Radiant Barriers  

E-Print Network [OSTI]

The purpose of this project was to model and quantify the increase of the absorptivity of radiant barriers caused by the accumulation of dust on the surface of radiant barriers. This research was the continuation of a previous work by the author...

Noboa, Homero L.

231

Hawaii Bioenergy Master Plan Financial Incentives And Barriers; And  

E-Print Network [OSTI]

Hawaii Bioenergy Master Plan Financial Incentives And Barriers; And Other Funding Sources Prepared Summary The goal of this section of the Hawaii Bioenergy Master Plan is to identify and evaluate financial incentives and barriers at points along the bioenergy industry value chain (feedstock production, feedstock

232

Delamination resistance of thermal barrier coatings containing embedded ductile layers  

E-Print Network [OSTI]

-tempera- ture exposure to oxygen, and an outer low thermal conduc- tivity ceramic coating, such as ytrriaDelamination resistance of thermal barrier coatings containing embedded ductile layers Matthew R layers upon thermal cycling delamination failure of thermal barrier coatings (TBCs) driven by thickening

Wadley, Haydn

233

Feasibility study of tank leakage mitigation using subsurface barriers  

SciTech Connect (OSTI)

The US Department of Energy (DOE) has established the Tank Waste Remediation System (TWRS) to satisfy manage and dispose of the waste currently stored in the underground storage tanks. The retrieval element of TWRS includes a work scope to develop subsurface impermeable barriers beneath SSTs. The barriers could serve as a means to contain leakage that may result from waste retrieval operations and could also support site closure activities by facilitating cleanup. Three types of subsurface barrier systems have emerged for further consideration: (1) chemical grout, (2) freeze walls, and (3) desiccant, represented in this feasibility study as a circulating air barrier. This report contains analyses of the costs and relative risks associated with combinations retrieval technologies and barrier technologies that from 14 alternatives. Eight of the alternatives include the use of subsurface barriers; the remaining six nonbarrier alternative are included in order to compare the costs, relative risks and other values of retrieval with subsurface barriers. Each alternative includes various combinations of technologies that can impact the risks associated with future contamination of the groundwater beneath the Hanford Site to varying degrees. Other potential risks associated with these alternatives, such as those related to accidents and airborne contamination resulting from retrieval and barrier emplacement operations, are not quantitatively evaluated in this report.

Treat, R.L.; Peters, B.B.; Cameron, R.J.; McCormak, W.D.; Trenkler, T.; Walters, M.F. [Ensearch Environmental, Inc. (United States); Rouse, J.K.; McLaughlin, T.J. [Bovay Northwest, Inc., Richland, WA (United States); Cruse, J.M. [Westinghouse Hanford Co., Richland, WA (United States)

1994-09-21T23:59:59.000Z

234

Cooling Energy Measurements of Houses with Attics Containing Radiant Barriers  

E-Print Network [OSTI]

Tests were conducted by Oak Ridge National Laboratory (ORNL) to determine the magnitude of the energy savings brought about by installing radiant barriers in the attics of single-family houses. The radiant barrier used for this test was a product...

Levins, W. P.; Karnitz, M. A.; Knight, D. K.

1986-01-01T23:59:59.000Z

235

Placement of Traffic Barriers on Roadside and Median Slopes  

E-Print Network [OSTI]

on the findings obtained from crash tests performed on flat terrain. For barriers placed on roadside and median slopes, vehicle impact height varies depending on the trajectory of the vehicle along the ditch section and lateral offset of the barrier. Thus...

Ferdous, Md Rubiat

2011-08-08T23:59:59.000Z

236

Algebrization: A New Barrier in Complexity Theory Scott Aaronson  

E-Print Network [OSTI]

inverting one-way functions) that we wanted to prove were hard. 1.1 The Need for a New Barrier Yet for both for Advanced Study Abstract Any proof of P = NP will have to overcome two barriers: relativization and natural-protocol for the Inner Product function with O ( n log n) communication (essentially matching a lower bound of Klauck

Wigderson, Avi

237

Vapor deposited samarium zirconate thermal barrier coatings Hengbei Zhao a,  

E-Print Network [OSTI]

Thermal barrier coatings The rare earth zirconates (M2Zr2O7, M=LaGd) have a low intrinsic thermal conductivity and high temperature phase stability making them attractive candidates for thermal barrier coating conditions and the coating composition, structure, texture, pore morphology, and thermal conductivity

Wadley, Haydn

238

Barriers that impact on the implementation of sustainable design  

E-Print Network [OSTI]

page 1 Barriers that impact on the implementation of sustainable design Michelle Hankinson, Amanda of sustainable design and barriers that influence their sustainable design practices. The paper reflects showed that education and experience informs a designer's understanding and values towards sustainable

239

Reducing Barriers To The Use of High-Efficiency Lighting Systems  

SciTech Connect (OSTI)

With funding from the U.S. Department of Energy (DOE), the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute completed the four-year research project, Reducing Barriers to the Use of High-Efficiency Lighting Systems. The initial objectives were: (1) identifying barriers to widespread penetration of lighting controls in commercial/industrial (C/I) applications that employ fluorescent lamp technologies, and (2) making recommendations to overcome these barriers. The addition of a fourth year expanded the original project objectives to include an examination of the impact on fluorescent lamps from dimming utilizing different lamp electrode heating and dimming ratios. The scope of the project was narrowed to identify barriers to the penetration of lighting controls into commercial-industrial (C/I) applications that employ fluorescent lamp technologies, and to recommend means for overcoming these barriers. Working with lighting manufacturers, specifiers, and installers, the project identified technological and marketing barriers to the widespread use of lighting controls, specifically automatic-off controls, occupancy sensors, photosensors, dimming systems, communication protocols and load-shedding ballasts. The primary barriers identified include cost effectiveness of lighting controls to the building owner, lack of standard communication protocols to allow different part of the control system to communicate effectively, and installation and commissioning issues. Overcoming the identified barriers requires lighting control products on the market to achieve three main goals: (1) Achieve sufficient functionality to meet the key requirements of their main market. (2) Allow significant cost reduction compared to current market standard systems. Cost should consider: hardware capital cost including wiring, design time required by the specifier and the control system manufacturer, installation time required by the electrician, and commissioning time and remedial time required by the electrician and end user. (3) Minimize ongoing perceived overhead costs and inconvenience to the end user, or in other words, systems should be simple to understand and use. In addition, we believe that no lighting controls solution is effective or acceptable unless it contributes to, or does not compromise, the following goals: (1) Productivity--Planning, installation, commissioning, maintenance, and use of controls should not decrease business productivity; (2) Energy savings--Lighting controls should save significant amounts of energy and money in relation to the expense involved in using them (acceptable payback period); and/or (3) Reduced power demand--Society as a whole should benefit from the lowered demand for expensive power and for more natural resources. Discussions of technology barriers and developments are insufficient by themselves to achieve higher penetration of lighting controls in the market place. Technology transfer efforts must play a key role in gaining market acceptance. The LRC developed a technology transfer model to better understand what actions are required and by whom to move any technology toward full market acceptance.

Peter Morante

2005-12-31T23:59:59.000Z

240

Ideas underlying quantification of margins and uncertainties(QMU): a white paper.  

SciTech Connect (OSTI)

This report describes key ideas underlying the application of Quantification of Margins and Uncertainties (QMU) to nuclear weapons stockpile lifecycle decisions at Sandia National Laboratories. While QMU is a broad process and methodology for generating critical technical information to be used in stockpile management, this paper emphasizes one component, which is information produced by computational modeling and simulation. In particular, we discuss the key principles of developing QMU information in the form of Best Estimate Plus Uncertainty, the need to separate aleatory and epistemic uncertainty in QMU, and the risk-informed decision making that is best suited for decisive application of QMU. The paper is written at a high level, but provides a systematic bibliography of useful papers for the interested reader to deepen their understanding of these ideas.

Helton, Jon Craig; Trucano, Timothy Guy; Pilch, Martin M.

2006-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

Hanford prototype-barrier status report: FY 1995  

SciTech Connect (OSTI)

Surface barriers (or covers) have been proposed for use at the Hanford Site as a means to isolate certain waste sites that, for reasons of cost or worker safety or both, may not be exhumed. Surface barriers are intende to isolated the wastes from the accessible environment and to provide long-term protection to future populations that might use the Hanford Site. Currently, no ``proven`` long-term barrier system is available. For this reason, the Hanford Site Permanent Isolation Surface-Barrier Development Program (BDP) was organized to develop the technology needed to provide long-term surface barrier capability for the Hanford Site for the US Department of Energy (DOE). Designs have been proposed to meet the most stringent needs for long-term waste disposal. The objective of the current barrier design is to use natural materials to develop a protective barrier system that isolates wastes for at least 1000 years by limiting water, plant, animal, and human intrusion; and minimizing erosion. The design criteria for water drainage has been set at 0.5 mm/yr. While other design criteria are more qualitative, it is clear that waste isolation for an extended time is the prime objective of the design. Constructibility and performance. are issues that can be tested and dealt with by evaluating prototype designs prior to extensive construction and deployment of covers for waste sites at Hanford.

Gee, G.W.; Ward, A.L.; Gilmore, B.G.; Ligotke, M.W.; Link, S.O.

1995-11-01T23:59:59.000Z

242

The role of plants on isolation barrier systems  

SciTech Connect (OSTI)

Surface barriers are used to isolate buried wastes from the environment. Most have been built for short-term isolation. The need to isolate radioactive wastes from the environment requires that the functional integrity of a barrier be maintained for thousands of years. Barrier function strongly depends on vegetation. Plants reduce wind and water erosion and minimize drainage, but may transport contaminants if roots extend into buried wastes. Our review of the function of plants on surface barriers focuses on the role of plants across mesic to arid environments and gives special consideration to studies done at Hanford. The Hanford Barrier Development Program was created to design and test an earthen cover system to inhibit water infiltration, plant and animal intrusion, and wind and water erosion, while isolating buried wastes for at least 1000 years. Studies at the Hanford have shown that plants will significantly interact with the barrier. Plants transpire soil water back into the atmosphere. Deep-rooted perennials best recycle water; soil water may drain through the root zone of shallow-rooted annuals. Lysimeter studies indicate that a surface layer of fine soil with deep-rooted plants precludes drainage even with three times normal precipitation. The presence of vegetation greatly reduces water and wind erosion, but deep-rooted plants pose a threat of biointrusion and contaminant transport. The Hanford barrier includes a buried rock layer and asphalt layer to prevent biointrusion.

Link, S.O.; Downs, J.L. [Pacific Northwest Lab., Richland, WA (United States); Waugh, W.J. [UNC Chem-Nuclear Geotech, Grand Junction, CO (United States)

1994-11-01T23:59:59.000Z

243

Chamber Technology Goals Used in APEX to Calibrate New Ideas and Measure Progress  

E-Print Network [OSTI]

refractory alloy (e.g. tungsten) with innovative heat transfer/transport scheme for vaporization of lithium Density Capability Average/Peak Neutron Wall Load ~ 7 / 10 MW/m2 Average/Peak Heat Flux ~ 1.4 / 2 MW/m2 2, and analysis of key physics and engineering issues ·APEX remains open to new ideas #12;"Liquid Walls" Emerged

Abdou, Mohamed

244

Coins, Quantum Measurements, and Turing's Barrier  

E-Print Network [OSTI]

Is there any hope for quantum computing to challenge the Turing barrier, i.e. to solve an undecidable problem, to compute an uncomputable function? According to Feynman's '82 argument, the answer is {\\it negative}. This paper re-opens the case: we will discuss solutions to a few simple problems which suggest that {\\it quantum computing is {\\it theoretically} capable of computing uncomputable functions}. In this paper a mathematical quantum "device" (with sensitivity $\\epsilon$) is constructed to solve the Halting Problem. The "device" works on a randomly chosen test-vector for $T$ units of time. If the "device" produces a click, then the program halts. If it does not produce a click, then either the program does not halt or the test-vector has been chosen from an {\\it undistinguishable set of vectors} ${\\IF}_{\\epsilon, T}$. The last case is not dangerous as our main result proves: {\\it the Wiener measure of} ${\\IF}_{\\epsilon, T}$ {\\it constructively tends to zero when} $T$ {\\it tends to infinity}. The "device", working in time $T$, appropriately computed, will determine with a pre-established precision whether an arbitrary program halts or not. {\\it Building the "halting machine" is mathematically possible.}

Cristian S. Calude; Boris Pavlov

2002-03-01T23:59:59.000Z

245

E-Print Network 3.0 - alloy tunneling barrier Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

through an insulating barrier with magnetic impurities O. Vvra,1,2, Summary: Josephson junction with a tunneling barrier formed by a paramagnetic insulator. We demonstrate......

246

E-Print Network 3.0 - apply diffusion barrier Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

radioactive waste confinement Summary: and solute diffusion in an engineered barrier for radioactive waste confinement. G. Montes-H et al. Applied... barrier (MX80 bentonite)...

247

Sub-barrier Fusion Cross Sections with Energy Density Formalism  

E-Print Network [OSTI]

We discuss the applicability of the energy density formalism (EDF) for heavy-ion fusion reactions at sub-barrier energies. For this purpose, we calculate the fusion excitation function and the fusion barrier distribution for the reactions of $^{16}$O with $^{154,}$$^{144}$Sm,$^{186}$W and $^{208}$Pb with the coupled-channels method. We also discuss the effect of saturation property on the fusion cross section for the reaction between two $^{64}$Ni nuclei, in connection to the so called steep fall-off phenomenon of fusion cross sections at deep sub-barrier energies.

F. Muhammad Zamrun; K. Hagino; N. Takigawa

2006-06-07T23:59:59.000Z

248

Sub-barrier Fusion Cross Sections with Energy Density Formalism  

SciTech Connect (OSTI)

We discuss the applicability of the energy density formalism (EDF) for heavy-ion fusion reactions at sub-barrier energies. For this purpose, we calculate the fusion excitation function and the fusion barrier distribution for the reactions of 16O with 154,144Sm, 186W and 208Pb with the coupled-channels method. We also discuss the effect of saturation property on the fusion cross section for the reaction between two 64Ni nuclei, in connection to the so called steep fall-off phenomenon of fusion cross sections at deep sub-barrier energies.

Zamrun, Muhammad; Hagino, F. K.; Takigawa, N. [Department of Physics, Tohoku University, 980-8578 (Japan)

2006-08-14T23:59:59.000Z

249

Combustion chemical vapor deposited coatings for thermal barrier coating systems  

SciTech Connect (OSTI)

The new deposition process, combustion chemical vapor deposition, shows a great deal of promise in the area of thermal barrier coating systems. This technique produces dense, adherent coatings, and does not require a reaction chamber. Coatings can therefore be applied in the open atmosphere. The process is potentially suitable for producing high quality CVD coatings for use as interlayers between the bond coat and thermal barrier coating, and/or as overlayers, on top of thermal barrier coatings. In this report, the evaluation of alumina and ceria coatings on a nickel-chromium alloy is described.

Hampikian, J.M.; Carter, W.B. [Georgia Institute of Technology, Atlanta, GA (United States). School of Materials Science and Engineering

1995-12-31T23:59:59.000Z

250

Grid composite for backfill barriers and waste applications  

SciTech Connect (OSTI)

A grid composite for protecting men and longwall mining equipment during longwall shield recovery includes a regular polymer geogrid structure formed by biaxially drawing a continuous sheet of select polypropylene material which is heat bonded to a polyester fabric. The grid composite is secured over caving shields of longwall mining equipment during a longwall mining operation. The polymer grid composite is ideal for waste containment structures, backfill barriers, and silt barriers in construction and mining applications. In waste containment and backfill barriers, the grid composite is used to form a containment structure. It principle function is to contain waste material usually consisting of a liquid with some percentage of solids. 10 figs.

Travis, B.

1994-01-11T23:59:59.000Z

251

Oklahoma Homicides: An Examination of Weapon Selection.  

E-Print Network [OSTI]

??This study examined 216 solved homicide cases from the state of Oklahoma. The cases occurred from 1995 to 2005. The purpose of the study was… (more)

Kinard, Demita

2009-01-01T23:59:59.000Z

252

An Examination of Avoided Costs in Utah  

E-Print Network [OSTI]

Subject An Examination of Avoided Costs in Utah Date Januarystate by seeking changes to the avoided cost tariff paid tomethod of calculating avoided costs that has been officially

Bolinger, Mark; Wiser, Ryan

2005-01-01T23:59:59.000Z

253

Nondestructive examination using neutron activated positron annihilation  

DOE Patents [OSTI]

A method is provided for performing nondestructive examination of a metal specimen using neutron activated positron annihilation wherein the positron emitter source is formed within the metal specimen. The method permits in situ nondestructive examination and has the advantage of being capable of performing bulk analysis to determine embrittlement, fatigue and dislocation within a metal specimen.

Akers, Douglas W. (Idaho Falls, ID); Denison, Arthur B. (Idaho Falls, ID)

2001-01-01T23:59:59.000Z

254

5 Examination of Persistence Associated with Coupling  

E-Print Network [OSTI]

-1), in which the MLM is forced with heat and momentum fluxes from the fully coupled simulation. The examination94 5 Examination of Persistence Associated with Coupling The results of Chapter 4 suggest on mechanisms that act to increase the persistence of climate variability in the coupled system. The vertical

Bhatt, Uma

255

Medical Examination Office of Human Resources  

E-Print Network [OSTI]

Medical Examination 4.40 Office of Human Resources Applies to: Faculty, staff, graduate associates, student employees, and applicants The Ohio State University Office of Human Resources Page 1 of 1 Policy 4.40 medical Examination ­ Resources Edited 12/10/13 Resources for Policy 4.40 Drug-Free Workplace, Policy 7

Howat, Ian M.

256

In situ formation of phosphate barriers in soil  

DOE Patents [OSTI]

Reactive barriers and methods for making reactive barriers in situ in soil for sequestering soil ontaminants including actinides and heavy metals. The barrier includes phosphate, and techniques are disclosed for forming specifically apatite barriers. The method includes injecting dilute reagents into soil in proximity to a contamination plume or source such as a waste drum to achieve complete or partial encapsulation of the waste. Controlled temperature and pH facilitates rapid formation of apatite, for example, where dilute aqueous calcium chloride and dilute aqueous sodium phosphate are the selected reagents. Mixing of reagents to form precipitate is mediated and enhanced through movement of reagents in soil as a result of phenomena including capillary action, movement of groundwater, soil washing and reagent injection pressure.

Moore, Robert C. (Edgewood, NM)

2002-01-01T23:59:59.000Z

257

Observations on the JWKB treatment of the quadratic barrier  

E-Print Network [OSTI]

Observations on the JWKB treatment of the quadratic barrier Hujun Shen1 and Harris J. Silverstone2 June, 2006. Accepted 11 July, 2006. #12;238 Hujun Shen and Harris J. Silverstone where ±x0 = ± -2E

Silverstone, Harris J.

258

Design and analysis of a recycled plastic noise barrier  

E-Print Network [OSTI]

in the early 1970s. There was steady advancement in barrier innovation as engineers, architects, and contractors relied on local building codes and "Standard Specihcations for Structural Supports for Highway Signs, Luminaires, and Traffic Signals...

Esche, Steven Todd

1998-01-01T23:59:59.000Z

259

altered glomerular barrier: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Schoofs, Frank; Fix, Thomas; Vickers, Mary E; Zhang, Wenrui; Jian, Jie; Wang, Haiyan; Blamire, Mark G 2014-04-17 284 Neutron pair transfer in sub-barrier capture process Nuclear...

260

Overcoming Persistent Barriers to Energy Efficiency in Multifamily...  

Broader source: Energy.gov (indexed) [DOE]

Overcoming P ersistent Barriers to Energy Efficiency in MulLfamily Housing through Partnerships January 30 th , 2014 Molly Lunn DOE's State a nd Local Technical Assistance Team 1 |...

Note: This page contains sample records for the topic "ideas examine barriers" 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

Sub-barrier capture with quantum diffusion approach  

E-Print Network [OSTI]

With the quantum diffusion approach the behavior of capture cross sections and mean-square angular momenta of captured systems are revealed in the reactions with deformed and spherical nuclei at sub-barrier energies. With decreasing bombarding energy under the barrier the external turning point of the nucleus-nucleus potential leaves the region of short-range nuclear interaction and action of friction. Because of this change of the regime of interaction, an unexpected enhancement of the capture cross section is found at bombarding energies far below the Coulomb barrier. This effect is shown its worth in the dependence of mean-square angular momentum on the bombarding energy. From the comparison of calculated capture cross sections and experimental capture or fusion cross sections the importance of quasifission near the entrance channel is demonstrated for the actinidebased reactions and reactions with medium-heavy nuclei at extreme sub-barrier energies.

V. V. Sargsyan; R. A. Kuzyakin; G. G. Adamian; N. V. Antonenko; W. Scheid; H. Q. Zhang

2011-08-05T23:59:59.000Z

262

Application of a cubic barrier in exotic decay studies  

SciTech Connect (OSTI)

In exotic decay studies, the branching ratios for spontaneous emissions of fragments heavier than alpha particle have been found to be very sensitive to the shape of the potential barrier. In order to fix the top of barrier correctly, finite range effects are included in our calculations. Experimental Q values for different decay modes are chosen so as to incorporate the shell effects. The shape of the barrier in the overlapping region is approximated by a third-order polynomial suggested by Nix. The cubic barrier is found to be more suitable near the penetrating region. This model is applied to calculate the branching ratios for the spontaneous emission of heavier fragments. The results obtained compare well with those of other theoretical models and experimental values.

Shanmugam, G.; Kamalaharan, B.

1988-09-01T23:59:59.000Z

263

February 5, 2014 Webinar - The Cementitious Barriers Partnership...  

Office of Environmental Management (EM)

of the Cementitious Barriers Partnership Toolbox, Version 2.0 David Kosson et al. (Vanderbilt UniversityCRESP) Agenda - 252014 P&RA CoP Webinar Presentation - Tools...

264

Economic evaluation of closure cap barrier materials study  

SciTech Connect (OSTI)

Volume II of the Economic Evaluation of the Closure Cap Barrier Materials, Revision I contains detailed cost estimates for closure cap barrier materials. The cost estimates incorporate the life cycle costs for a generic hazardous waste seepage basin closure cap under the RCRA Post Closure Period of thirty years. The economic evaluation assessed six barrier material categories. Each of these categories consists of several composite cover system configurations, which were used to develop individual cost estimates. The information contained in this report is not intended to be used as a cost estimating manual. This information provides the decision makers with the ability to screen barrier materials, cover system configurations, and identify cost-effective materials for further consideration.

Serrato, M.G.; Bhutani, J.S.; Mead, S.M.

1993-09-01T23:59:59.000Z

265

TANK FARM INTERIM SURFACE BARRIER MATERIALS AND RUNOFF ALTERNATIVES STUDY  

SciTech Connect (OSTI)

This report identifies candidate materials and concepts for interim surface barriers in the single-shell tank farms. An analysis of these materials for application to the TY tank farm is also provided.

HOLM MJ

2009-06-25T23:59:59.000Z

266

Microsoft Word - Barriers to Achieving the Modern Grid_Final...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

our 21 st Century Economy V1.0 Barriers to Achieving the Modern Grid A declining infusion of new thought is occurring. The technical experience base of utilities is graying....

267

One-way Ponderomotive Barrier in a Uniform Magnetic Field  

SciTech Connect (OSTI)

The possibility of an asymmetric ponderomotive barrier in a nonuniform dc magnetic field by high-frequency radiation near the cyclotron resonance for selected plasma species was contemplated in Physics of Plasmas 11 (November 2004) 5046-5064. Here we show that a similar one-way barrier, which reflects particles incident from one side while transmitting those incident from the opposite side, can be produced also in a uniform magnetic field, entirely due to inhomogeneity of high-frequency drive.

I.Y. Dodin; N.J. Fisch

2005-02-14T23:59:59.000Z

268

Band Tunneling through Double Barrier in Bilayer Graphene  

E-Print Network [OSTI]

By taking into account the full four band energy spectrum, we calculate the transmission probability and conductance of electrons across symmetric and asymmetric double potential barrier with a confined interlayer potential difference in bilayer graphene. For energies less than the interlayer coupling \\gamma_{1}, E \\gamma_{1}, we obtain four possible ways for transmission resulting from the two propagating modes. We compute the associated transmission probabilities as well as their contribution to the conductance, study the effect of the double barrier geometry.

Hasan A. Alshehab; Hocine Bahlouli; Abderrahim El Mouhafid; Ahmed Jellal

2014-01-20T23:59:59.000Z

269

Analysis of Attic Radiant Barrier Systems Using Mathematical Models  

E-Print Network [OSTI]

Center, Cape Canaveral, FL, January 1988. 3. Vilkes, K.E. and D.V. Yarbrough, "Radiant Barrier Research Plan," Draft Report, ORNL/CON-256, Oak Ridge National Laboratory, Oak Ridge, TN, April 1988. 4. ASHRAE Aandbook of Fundamentals, American... Measurements of Single-Family Houses with Attics Containing Radiant Barriers," Final Report, ORNL/CON-200, Oak Ridge National Laboratory, Oak Ridge, TN, July 1986. 8. Cummings, J. B., "Central Air Condi tioner Impact Upon Infiltration Rates in Florida...

Fairey, P.; Swami, M.

1988-01-01T23:59:59.000Z

270

Structural and safety characteristics and warrants for highway traffic barriers  

E-Print Network [OSTI]

Ross Highway traffic barriers are highway appurtenances that provide vehicle occupants with a relative degree of protection from roadside hazards and from errant vehicles encroaching across a median. The six basic types of traffic barr1ers are roads... are decision criteria that 1dentify sites along highways that need traff1c barrier installations. Structural and safety character- istics of the barr1ers refer to the impact performance, the structural integrity, and the safety of the vehicle occupants upon...

Kohutek, Terry Lee

1975-01-01T23:59:59.000Z

271

Transportation Energy Futures Series: Non-Cost Barriers to Consumer Adoption of New Light-Duty Vehicle Technologies  

SciTech Connect (OSTI)

Consumer preferences are key to the adoption of new vehicle technologies. Barriers to consumer adoption include price and other obstacles, such as limited driving range and charging infrastructure; unfamiliarity with the technology and uncertainty about direct benefits; limited makes and models with the technology; reputation or perception of the technology; standardization issues; and regulations. For each of these non-cost barriers, this report estimates an effective cost and summarizes underlying influences on consumer preferences, approximate magnitude and relative severity, and assesses potential actions, based on a comprehensive literature review. While the report concludes that non-cost barriers are significant, effective cost and potential market share are very uncertain. Policies and programs including opportunities for drivers to test drive advanced vehicles, general public outreach and information programs, incentives for providing charging and fueling infrastructure, and development of technology standards were examined for their ability to address barriers, but little quantitative data exists on the effectiveness of these measures. This is one in a series of reports produced as a result of the Transportation Energy Futures project, a Department of Energy-sponsored multi-agency effort to pinpoint underexplored strategies for reducing GHGs and petroleum dependence related to transportation.

Stephens, T.

2013-03-01T23:59:59.000Z

272

Ocean Barrier Layers’ Effect on Tropical Cyclone Intensification  

SciTech Connect (OSTI)

Improving a tropical cyclone's forecast and mitigating its destructive potential requires knowledge of various environmental factors that influence the cyclone's path and intensity. Herein, using a combination of observations and model simulations, we systematically demonstrate that tropical cyclone intensification is significantly affected by salinity-induced barrier layers, which are 'quasi-permanent' features in the upper tropical oceans. When tropical cyclones pass over regions with barrier layers, the increased stratification and stability within the layer reduce storm-induced vertical mixing and sea surface temperature cooling. This causes an increase in enthalpy flux from the ocean to the atmosphere and, consequently, an intensification of tropical cyclones. On average, the tropical cyclone intensification rate is nearly 50% higher over regions with barrier layers, compared to regions without. Our finding, which underscores the importance of observing not only the upper-ocean thermal structure but also the salinity structure in deep tropical barrier layer regions, may be a key to more skillful predictions of tropical cyclone intensities through improved ocean state estimates and simulations of barrier layer processes. As the hydrological cycle responds to global warming, any associated changes in the barrier layer distribution must be considered in projecting future tropical cyclone activity.

Balaguru, Karthik; Chang, P.; Saravanan, R.; Leung, Lai-Yung R.; Xu, Zhao; Li, M.; Hsieh, J.

2012-09-04T23:59:59.000Z

273

Thermal model of attic systems with radiant barriers  

SciTech Connect (OSTI)

This report summarizes the first phase of a project to model the thermal performance of radiant barriers. The objective of this phase of the project was to develop a refined model for the thermal performance of residential house attics, with and without radiant barriers, and to verify the model by comparing its predictions against selected existing experimental thermal performance data. Models for the thermal performance of attics with and without radiant barriers have been developed and implemented on an IBM PC/AT computer. The validity of the models has been tested by comparing their predictions with ceiling heat fluxes measured in a number of laboratory and field experiments on attics with and without radiant barriers. Cumulative heat flows predicted by the models were usually within about 5 to 10 percent of measured values. In future phases of the project, the models for attic/radiant barrier performance will be coupled with a whole-house model and further comparisons with experimental data will be made. Following this, the models will be utilized to provide an initial assessment of the energy savings potential of radiant barriers in various configurations and under various climatic conditions. 38 refs., 14 figs., 22 tabs.

Wilkes, K.E.

1991-07-01T23:59:59.000Z

274

Top Innovation Ideas from the New York Energy Data Jam | OpenEI Community  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende NewSowitec do Brasil EnergiaSurPVTip forIdeas from the New

275

LANS Venture Acceleration Fund announces "Call for Ideas"  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickrinformationPostdocs &Jeff Yarbroughdevelopment,Call for ideas

276

Spreading an Idea From the William Kamkwamba TED Talk | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSiteNeutron Scattering4 By I. Tudosa,Spreading an Idea From the

277

ENGINEERED BARRIER SYSTEM FEATURES, EVENTS AND PROCESSES  

SciTech Connect (OSTI)

The purpose of this report is to evaluate and document the inclusion or exclusion of engineered barrier system (EBS) features, events, and processes (FEPs) with respect to models and analyses used to support the total system performance assessment for the license application (TSPA-LA). A screening decision, either Included or Excluded, is given for each FEP along with the technical basis for exclusion screening decisions. This information is required by the U.S. Nuclear Regulatory Commission (NRC) at 10 CFR 63.114 (d, e, and f) [DIRS 173273]. The FEPs addressed in this report deal with those features, events, and processes relevant to the EBS focusing mainly on those components and conditions exterior to the waste package and within the rock mass surrounding emplacement drifts. The components of the EBS are the drip shield, waste package, waste form, cladding, emplacement pallet, emplacement drift excavated opening (also referred to as drift opening in this report), and invert. FEPs specific to the waste package, cladding, and drip shield are addressed in separate FEP reports: for example, ''Screening of Features, Events, and Processes in Drip Shield and Waste Package Degradation'' (BSC 2005 [DIRS 174995]), ''Clad Degradation--FEPs Screening Arguments (BSC 2004 [DIRS 170019]), and Waste-Form Features, Events, and Processes'' (BSC 2004 [DIRS 170020]). For included FEPs, this report summarizes the implementation of the FEP in the TSPA-LA (i.e., how the FEP is included). For excluded FEPs, this analysis provides the technical basis for exclusion from TSPA-LA (i.e., why the FEP is excluded). This report also documents changes to the EBS FEPs list that have occurred since the previous versions of this report. These changes have resulted due to a reevaluation of the FEPs for TSPA-LA as identified in Section 1.2 of this report and described in more detail in Section 6.1.1. This revision addresses updates in Yucca Mountain Project (YMP) administrative procedures as they pertain to this report; the current procedures are addressed in Section 2. This revision also addresses updates to the technical basis in supporting analysis and model reports and corroborative documentation, as presented in Sections 4 and 6 of this report. Finally, Sections 4, 5, and 6 of this report provide additional information pertaining to the relevant FEPs-related Acceptance Criteria presented in ''Yucca Mountain Review Plan, Final Report'' (YMRP) (NRC 2003 [DIRS 163274], Sections 2.2.1.2.1.3 and 2.2.1.3.3.3).

Jaros, W.

2005-08-30T23:59:59.000Z

278

Scientists examine proton radiography of brain mockup  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Scientists examine proton radiography of brain mockup The use of such a high-energy proton beam is ideal for imaging small tumors within patients for targeted proton therapy. March...

279

A Microscopic Examination of the Josephson Junction  

E-Print Network [OSTI]

A Microscopic Examination of the Josephson Junction J. K. Freericks, P. Miller, and M. Jarrell Review, 1999 #12;Introduction · The Josephson-Junction Computer · Maximize · Resistively Shunted Junction

Freericks, Jim

280

EXAMINATION OF SHIPPING PACKAGE 9975-05050  

SciTech Connect (OSTI)

Shipping package 9975-05050 was examined in K-Area following its identification as a high wattage package. Elevated temperature and fiberboard moisture content are key parameters that impact the degradation rate of fiberboard within 9975 packages in a storage environment. The high wattage of this package contributes significantly to component temperatures. After examination in K-Area, the package was provided to SRNL for further examination of the fiberboard assembly. The moisture content of the fiberboard was relatively low (compared to packages examined previously), but the moisture gradient (between fiberboard ID and OD surfaces) was relatively high, as would be expected for the high heat load. The cane fiberboard appeared intact and displayed no apparent change in integrity relative to a new package.

Daugherty, W.

2014-11-06T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

Examining price appreciation in foreclosed properties  

E-Print Network [OSTI]

This thesis examines foreclosure sales of single-family homes in eight communities in the Boston Metro area and the price appreciation from purchase of a foreclosed property through to a subsequent fair market, arms-length ...

Loth, Eric, Jr

2008-01-01T23:59:59.000Z

282

Verification of the integrity of barriers using gas diffusion  

SciTech Connect (OSTI)

In-situ barrier materials and designs are being developed for containment of high risk contamination as an alternative to immediate removal or remediation. The intent of these designs is to prevent the movement of contaminants in either the liquid or vapor phase by long-term containment, essentially buying time until the contaminant depletes naturally or a remediation can be implemented. The integrity of the resultant soil-binder mixture is typically assessed by a number of destructive laboratory tests (leaching, compressive strength, mechanical stability with respect to wetting and freeze-thaw cycles) which as a group are used to infer the likelihood of favorable long-term performance of the barrier. The need exists for a minimally intrusive yet quantifiable methods for assessment of a barrier`s integrity after emplacement, and monitoring of the barrier`s performance over its lifetime. Here, the authors evaluate non-destructive measurements of inert-gas diffusion (specifically, SF{sub 6}) as an indicator of waste-form integrity. The goals of this project are to show that diffusivity can be measured in core samples of soil jet-grouted with Portland cement, validate the experimental method through measurements on samples, and to calculate aqueous diffusivities from a series of diffusion measurements. This study shows that it is practical to measure SF{sub 6} diffusion rates in the laboratory on samples of grout (Portland cement and soil) typical of what might be used in a barrier. Diffusion of SF{sub 6} through grout (Portland cement and soil) is at least an order of magnitude slower than through air. The use of this tracer should be sensitive to the presence of fractures, voids, or other discontinuities in the grout/soil structure. Field-scale measurements should be practical on time-scales of a few days.

Ward, D.B. [SPECTRA Research Inst., Albuquerque, NM (United States); Williams, C.V. [Sandia National Labs., Albuquerque, NM (United States). Environmental Restoration Technologies Dept.

1997-06-01T23:59:59.000Z

283

Spring Creek Project for Ideas, Nature, and the Written Word Call for Nominations: Graduate Student Research and Writing Retreat  

E-Print Network [OSTI]

Spring Creek Project for Ideas, Nature, and the Written Word Call for Nominations: Graduate Student on a collaborative project or two graduate students who each have individual projects are invited to nominate graduate students in the humanities or environmental sciences

GrĂŒnwald, Niklaus J.

284

The idea of digital oilfields, i.e., with unmanned exploration unities, is a strong trend in the oil & gas  

E-Print Network [OSTI]

Abstract The idea of digital oilfields, i.e., with unmanned exploration unities, is a strong trend oilfields is roughly an interplay of several technologies that provides resources for gathering raw data

Barbosa, Alberto

285

A review of "Reading the Renaissance: Ideas and Idioms from Shakespeare to Milton." by Marc Berley, ed.  

E-Print Network [OSTI]

224 SEVENTEENTH-CENTURY NEWS Marc Berley, ed. Reading the Renaissance: Ideas and Idioms from Shakespeare to Milton. Pittsburgh: Duquesne University Press, 2003. viii + 278 pp. $60.00. Review by FRANCES M. MALPEZZI, ARKANSAS STATE UNIVERSITY...

Frances Malpezzi

2003-01-01T23:59:59.000Z

286

Sorption of cesium and strontium from concentrated brines by backfill barrier materials  

SciTech Connect (OSTI)

The sorption of radionuclides from potentially intruding groundwater at a nuclear waste repository is a major chemical function of backfill barriers. In this study, various materials (including clays, zeolites and an inorganic ion exchanger) were screened for the sorption of the fission products cesium and strontium in concentrated brines. Representative brines A and B for the Waste Isolation Pilot Plant (WIPP), a proposed radioactive waste repository and test facility in bedded salt were used. Sorption properties were quantified using empirical distribution coefficients, k/sub d/. Of the materials examined, sodium titanate had the highest k/sub d/ for the sorption of Sr(II) in both brine A (k/sub d/ = 125 ml/g) and brine B(k/sub d/ = 500 to 600 ml/g). A mordenite-type zeolite was the most effective getter for Cs(I) in brine A (k/sub d = 27 ml/g), while illite yielded the highest k/sub d/ for Cs(I) in brine B (k/sub d/ = 115 ml/g). The relative merit of these k/sub d/ values is evaluated in terms of calculated estimates of breakthrough times for a backfill barrier containing the getter. Results show that a backfill mixture containing these getters is potentially an effective barrier to the migration of Sr(II) and Cs(I), although further study (especially for the sorption of cesium from brine A) is recommended. Initial mechanistic studies revealed competing ion effects which would support an ion exchange mechanism. K/sub d/'s were constant over a Sr(II) concentration range of 10/sup -11/ to 10/sup -5/ M and a Cs(I) concentration range of 10/sup -8/ to 10/sup -5/ M, supporting the choice of a linear sorption isotherm as a model for the results. Constant batch composition was shown to be attained within one week.

Winslow, C D

1981-03-01T23:59:59.000Z

287

In Situ Formation Of Reactive Barriers For Pollution Control  

DOE Patents [OSTI]

A method of treating soil contamination by forming one or more zones of oxidized material in the path of percolating groundwater is disclosed. The zone or barrier region is formed by delivering an oxidizing agent into the ground for reaction with an existing soil component. The oxidizing agent modifies the existing soil component creating the oxidized zone. Subsequently when soil contaminates migrate into the zone, the oxidized material is available to react with the contaminates and degrade them into benign products. The existing soil component can be an oxidizable mineral such as manganese, and the oxidizing agent can be ozone gas or hydrogen peroxide. Soil contaminates can be volatile organic compounds. Oxidized barriers can be used single or in combination with other barriers.

Gilmore, Tyler J. (Pasco, WA); Riley, Robert G. (West Richland, WA)

2004-04-27T23:59:59.000Z

288

Poster design : an examination of history, theory, practice and potential  

E-Print Network [OSTI]

Posters are public inscriptions with strong roots in the development of graphic technology. They play an integral role in the development of graphic design. Current ideas about poster design are discussed to establish why ...

Felde, Nathan Immanuel

1982-01-01T23:59:59.000Z

289

Nutrient Management Examination Competency Areas Individual Specialists  

E-Print Network [OSTI]

and reference materials are included on the Nutrient Management Resource CD distributed at the Nutrientv.01.2014 Nutrient Management Examination Competency Areas Individual Specialists The competency areas in this listing were developed according to the requirements of Pennsylvania's Nutrient Management

Guiltinan, Mark

290

The Functional Requirements and Design Basis for Information Barriers  

SciTech Connect (OSTI)

This report summarizes the results of the Information Barrier Working Group workshop held at Sandia National Laboratory in Albuquerque, NM, February 2-4, 1999. This workshop was convened to establish the functional requirements associated with warhead radiation signature information barriers, to identify the major design elements of any such system or approach, and to identify a design basis for each of these major elements. Such information forms the general design basis to be used in designing, fabricating, and evaluating the complete integrated systems developed for specific purposes.

Fuller, James L.

2012-05-01T23:59:59.000Z

291

Subsurface barrier design alternatives for confinement and controlled advection flow  

SciTech Connect (OSTI)

Various technologies and designs are being considered to serve as subsurface barriers to confine or control contaminant migration from underground waste storage or disposal structures containing radioactive and hazardous wastes. Alternatives including direct-coupled flood and controlled advection designs are described as preconceptual examples. Prototype geotechnical equipment for testing and demonstration of these alternative designs tested at the Hanford Geotechnical Development and Test Facility and the Hanford Small-Tube Lysimeter Facility include mobile high-pressure injectors and pumps, mobile transport and pumping units, vibratory and impact pile drivers, and mobile batching systems. Preliminary laboratory testing of barrier materials and additive sequestering agents have been completed and are described.

Phillips, S.J.; Stewart, W.E.; Alexander, R.G. [Westinghouse Hanford Co., Richland, WA (United States); Cantrell, K.J. [Pacific Northwest Lab., Richland, WA (United States); McLaughlin, T.J. [Bovay Northwest Inc., Richland, WA (United States)

1994-02-01T23:59:59.000Z

292

Development of a low-profile portable concrete barrier  

E-Print Network [OSTI]

A low-profile portable concrete barrier (PCB) has been developed for use in low-speed (approximately 45 mph [73 km/h] or less) work zones. The purpose of the low-profile barrier is to shield the work zone and redirect errant vehicles while.... SEQUENTIAL PHOTOGRAPHS OF CRASH TESTS APPENDIX D. ACCELEROMETER TRACES AND PLOTS OF ROLL, PITCH AND YAW RATES APPENDIX E. TEST VEHICLE PROPERTIES VITA Page 6 8 8 10 10 13 13 17 18 19 20 24 29 29 41 50 52 53 63 68 73 82 85 LIST...

Guidry, Todd Randall

1991-01-01T23:59:59.000Z

293

BARRIER ISSUES TO THE UTILIZATION OF BIOMASS  

SciTech Connect (OSTI)

The Energy & Environmental Research Center (EERC) is conducting a project to examine the fundamental issues limiting the use of biomass in small industrial steam/power systems in order to increase the future use of this valuable domestic resource. Specifically, the EERC is attempting to elucidate the ash-related problems--grate clinkering and heat exchange surface fouling--associated with cofiring coal and biomass in grate-fired systems. Utilization of biomass in stoker boilers designed for coal can be a cause of concern for boiler operators. Boilers that were designed for low-volatile fuels with lower reactivities can experience damaging fouling when switched to higher-volatile and more reactive lower-rank fuels, such as when cofiring biomass. Higher heat release rates at the grate can cause more clinkering or slagging at the grate because of higher temperatures. Combustion and loss of volatile matter can start too early with biomass fuels compared to design fuel, vaporizing alkali and chlorides which then condense on rear walls and heat exchange tube banks in the convective pass of the boiler, causing noticeable increases in fouling. In addition, stoker-fired boilers that switch to biomass blends may encounter new chemical species such as potassium sulfates and various chlorides in combination with different flue gas temperatures because of changes in fuel heating value, which can adversely affect ash deposition behavior.

Jay R. Gunderson; Bruce C. Folkedahl; Darren D. Schmidt; Greg F. Weber; Christopher J. Zygarlicke

2002-05-01T23:59:59.000Z

294

Reactive Membrane Barriers for Containment of Subsurface Contamination  

SciTech Connect (OSTI)

The overall goal of this project was to develop reactive membrane barriers--a new and flexible technique to contain and stabilize subsurface contaminants. Polymer membranes will leak once a contaminant is able to diffuse through the membrane. By incorporating a reactive material in the polymer, however, the contaminant is degraded or immobilized within the membrane. These processes increase the time for contaminants to breakthrough the barrier (i.e. the lag time) and can dramatically extend barrier lifetimes. In this work, reactive barrier membranes containing zero-valent iron (Fe{sup 0}) or crystalline silicotitanate (CST) were developed to prevent the migration of chlorinated solvents and cesium-137, respectively. These studies were complemented by the development of models quantifying the leakage/kill time of reactive membranes and describing the behavior of products produced via the reactions within the membranes. First, poly(vinyl alcohol) (PVA) membranes containing Fe{sup 0} and CST were prepared and tested. Although PVA is not useful in practical applications, it allows experiments to be performed rapidly and the results to be compared to theory. For copper ions (Cu{sup 2+}) and carbon tetrachloride, the barrier was effective, increasing the time to breakthrough over 300 times. Even better performance was expected, and the percentage of the iron used in the reaction with the contaminants was determined. For cesium, the CST laden membranes increased lag times more than 30 times, and performed better than theoretical predictions. A modified theory was developed for ion exchangers in reactive membranes to explain this result. With the PVA membranes, the effect of a groundwater matrix on barrier performance was tested. Using Hanford groundwater, the performance of Fe{sup 0} barriers decreased compared to solutions containing a pH buffer and high levels of chloride (both of which promote iron reactivity). For the CST bearing membrane, performance improved by a factor of three when groundwater was used in place of deionized water. The performance of high density polyethylene (HDPE) membranes containing Fe{sup 0} was then evaluating using carbon tetrachloride as the target contaminant. Only with a hydrophilic additive (glycerol), was the iron able to extend lag times. Lag times were increased by a factor of 15, but only 2-3% of the iron was used, likely due to formation of oxide precipitates on the iron surface, which slowed the reaction. With thicker membranes and lower carbon tetrachloride concentrations, it is expected that performance will improve. Previous models for reactive membranes were also extended. The lag time is a measurement of when the barrier is breached, but contaminants do slowly leak through prior to the lag time. Thus, two parameters, the leakage and the kill time, were developed to determine when a certain amount of pollutant has escaped (the kill time) or when a given exposure (concentration x time) occurs (the leakage). Finally, a model was developed to explain the behavior of mobile reaction products in reactive barrier membranes. Although the goal of the technology is to avoid such products, it is important to be able to predict how these products will behave. Interestingly, calculations show that for any mobile reaction products, one half of the mass will diffuse into the containment area and one half will escape, assuming that the volumes of the containment area and the surrounding environment are much larger than the barrier membrane. These parameters/models will aid in the effective design of barrier membranes.

William A. Arnold; Edward L. Cussler

2007-02-26T23:59:59.000Z

295

Geothermal (Ground-Source) Heat Pumps: Market Status, Barriers to Adoption, and Actions to Overcome Barriers  

SciTech Connect (OSTI)

More effective stewardship of our resources contributes to the security, environmental sustainability, and economic well-being of the nation. Buildings present one of the best opportunities to economically reduce energy consumption and limit greenhouse gas emissions. Geothermal heat pump systems (GHPs), sometimes called ground-source heat pump or Geo-Exchange systems, have been proven capable of producing large reductions in energy use and peak demand in buildings. However, GHPs have received little attention at the policy level as an important component of a national energy and climate strategy. Have policymakers mistakenly overlooked GHPs, or are GHPs simply unable to make a major contribution to the national goals for various reasons? This brief study was undertaken at DOE s request to address this conundrum. The scope of the study includes determining the status of global GHP markets and the status of the GHP industry and technology in the United States, assembling previous estimates of GHP energy savings potential and other benefits, identifying key barriers to application of GHPs, and identifying actions that could accelerate market adoption of GHPs. The findings are documented in a report along with conclusions and recommendations. This paper summarizes the key information from the report.

Hughes, Patrick [ORNL

2009-01-01T23:59:59.000Z

296

Geothermal(Ground-Source)Heat Pumps: Market Status, Barriers to Adoption, and Actions to Overcome Barriers  

SciTech Connect (OSTI)

More effective stewardship of our resources contributes to the security, environmental sustainability, and economic well-being of the nation. Buildings present one of the best opportunities to economically reduce energy consumption and limit greenhouse gas emissions. Geothermal heat pumps (GHPs), sometimes called ground-source heat pumps, have been proven capable of producing large reductions in energy use and peak demand in buildings. However, GHPs have received little attention at the policy level as an important component of a national strategy. Have policymakers mistakenly overlooked GHPs, or are GHPs simply unable to make a major contribution to the national goals for various reasons? This brief study was undertaken at DOE's request to address this conundrum. The scope of the study includes determining the status of global GHP markets and the status of the GHP industry and technology in the United States, assembling previous estimates of GHP energy savings potential, identifying key barriers to application of GHPs, and identifying actions that could accelerate market adoption of GHPs. The findings are documented in this report along with conclusions and recommendations.

Hughes, Patrick [ORNL

2008-12-01T23:59:59.000Z

297

Triode carbon nanotube field emission display using barrier rib structure and manufacturing method thereof  

DOE Patents [OSTI]

A triode carbon nanotube field emission display (FED) using a barrier rib structure and a manufacturing method thereof are provided. In a triode carbon nanotube FED employing barrier ribs, barrier ribs are formed on cathode lines by a screen printing method, a mesh structure is mounted on the barrier ribs, and a spacer is inserted between the barrier ribs through slots of the mesh structure, thereby stably fixing the mesh structure and the spacer within a FED panel due to support by the barrier ribs.

Han, In-taek (Yongin, KR); Kim, Jong-min (Seongnam, KR)

2003-01-01T23:59:59.000Z

298

TRUPACT-II 157 Examination Report  

SciTech Connect (OSTI)

This report presents the results of examination and recovery activities performed on the TRUPACT-II 157 shipping container. The container was part of a contact-handled transuranic waste shipment being transported on a truck to the Waste Isolation Pilot Plant in New Mexico when an accident occurred. Although the transport vehicle sustained only minor damage, airborne transuranic contamination was detected in air samples extracted from inside TRUPACT-II 157 at the Waste Isolation Pilot Plant. Consequently, the shipping container was rejected, resealed, and returned to the Idaho National Engineering and Environmental Laboratory where the payload was disassembled, examined, and recovered for subsequent reshipment to the Waste Isolation Pilot Plant. This report documents the results of those activities.

Barry H. O'Brien; Jeffrey M. Lacy; Kip E. Archibald

2003-12-01T23:59:59.000Z

299

AGC-1 Post Irradiation Examination Status  

SciTech Connect (OSTI)

The Next Generation Nuclear Plant (NGNP) Graphite R&D program is currently measuring irradiated material property changes in several grades of nuclear graphite for predicting their behavior and operating performance within the core of new Very High Temperature Reactor (VHTR) designs. The Advanced Graphite Creep (AGC) experiment consisting of six irradiation capsules will generate this irradiated graphite performance data for NGNP reactor operating conditions. All six AGC capsules in the experiment will be irradiated in the Advanced Test Reactor (ATR), disassembled in the Hot Fuel Examination Facility (HFEF), and examined at the INL Research Center (IRC) or Oak Ridge National Laboratory (ORNL). This is the first in a series of status reports on the progress of the AGC experiment. As the first capsule, AGC1 was irradiated from September 2009 to January 2011 to a maximum dose level of 6-7 dpa. The capsule was removed from ATR and transferred to the HFEF in April 2011 where the capsule was disassembled and test specimens extracted from the capsules. The first irradiated samples from AGC1 were shipped to the IRC in July 2011and initial post irradiation examination (PIE) activities were begun on the first 37 samples received. PIE activities continue for the remainder of the AGC1 specimen as they are received at the IRC.

David Swank

2011-09-01T23:59:59.000Z

300

Engineered Barrier System: Physical and Chemical Environment Model  

SciTech Connect (OSTI)

The conceptual and predictive models documented in this Engineered Barrier System: Physical and Chemical Environment Model report describe the evolution of the physical and chemical conditions within the waste emplacement drifts of the repository. The modeling approaches and model output data will be used in the total system performance assessment (TSPA-LA) to assess the performance of the engineered barrier system and the waste form. These models evaluate the range of potential water compositions within the emplacement drifts, resulting from the interaction of introduced materials and minerals in dust with water seeping into the drifts and with aqueous solutions forming by deliquescence of dust (as influenced by atmospheric conditions), and from thermal-hydrological-chemical (THC) processes in the drift. These models also consider the uncertainty and variability in water chemistry inside the drift and the compositions of introduced materials within the drift. This report develops and documents a set of process- and abstraction-level models that constitute the engineered barrier system: physical and chemical environment model. Where possible, these models use information directly from other process model reports as input, which promotes integration among process models used for total system performance assessment. Specific tasks and activities of modeling the physical and chemical environment are included in the technical work plan ''Technical Work Plan for: In-Drift Geochemistry Modeling'' (BSC 2004 [DIRS 166519]). As described in the technical work plan, the development of this report is coordinated with the development of other engineered barrier system analysis model reports.

D. M. Jolley; R. Jarek; P. Mariner

2004-02-09T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

Overcoming Barriers to Ground Source Heat Pumps in California  

E-Print Network [OSTI]

Overcoming Barriers to Ground Source Heat Pumps in California Geothermal Resources Development Account http://www.energy.ca.gov/geothermal/ grda.html May 2011 The Issue Ground source heat pumps can far made little impact in California. Estimates are that adoption of ground source heat pumps

302

Nanoscale mapping of the W/Si(001) Schottky barrier  

SciTech Connect (OSTI)

The W/Si(001) Schottky barrier was spatially mapped with nanoscale resolution using ballistic electron emission microscopy (BEEM) and ballistic hole emission microscopy (BHEM) using n-type and p-type silicon substrates. The formation of an interfacial tungsten silicide is observed utilizing transmission electron microscopy and Rutherford backscattering spectrometry. The BEEM and BHEM spectra are fit utilizing a linearization method based on the power law BEEM model using the Prietsch Ludeke fitting exponent. The aggregate of the Schottky barrier heights from n-type (0.71?eV) and p-type (0.47?eV) silicon agrees with the silicon band gap at 80?K. Spatially resolved maps of the Schottky barrier are generated from grids of 7225 spectra taken over a 1??m?Ś?1??m area and provide insight into its homogeneity. Histograms of the barrier heights have a Gaussian component consistent with an interface dipole model and show deviations that are localized in the spatial maps and are attributed to compositional fluctuations, nanoscale defects, and foreign materials.

Durcan, Chris A.; Balsano, Robert; LaBella, Vincent P., E-mail: vlabella@albany.edu [College of Nanoscale Science and Engineering, State University of New York, Albany, New York 12203 (United States)

2014-07-14T23:59:59.000Z

303

Microstructural Evolution and interfacial motion in systems with diffusion barriers  

SciTech Connect (OSTI)

This research program was designed to model and simulate phase transformations in systems containing diffusion barriers. The modeling work included mass flow, phase formation, and microstructural evolution in interdiffusing systems. Simulation work was done by developing Cahn-Hilliard and phase field equations governing both the temporal and spatial evolution of the composition and deformation fields and other important phase variables.

Perry H. Leo

2009-03-05T23:59:59.000Z

304

Quantum Finance Hamiltonian for Coupon Bond European and Barrier Options  

E-Print Network [OSTI]

Quantum Finance Hamiltonian for Coupon Bond European and Barrier Options Belal E. Baaquie RMI are financial derivatives that can be analyzed in the Hamiltonian formulation of quantum finance. Forward-2963 Fax: (65) 6777-6126 Email: phybeb@nus.edu.sg #12;Quantum Finance Hamiltonian for Coupon Bond European

Chaudhuri, Sanjay

305

Peierls-Nabarro Barrier and Protein Loop Propagation  

E-Print Network [OSTI]

When a self-localized quasiparticle excitation propagates along a discrete one dimensional lattice, it becomes subject to a dissipation that converts the kinetic energy into lattice vibrations. Eventually the kinetic energy does no longer enable the excitation to cross over the minimum energy barrier between neighboring sites, and the excitation becomes localized within a lattice cell. In the case of a protein, the lattice structure consists of the C-alpha backbone. The self-localized quasiparticle excitation is the elemental building block of loops. It can be modeled by a kink which solves a variant of the discrete non-linear Schroedinger equation (DNLS). We study the propagation of such a kink in the case of protein G related albumin-binding domain, using the UNRES coarse-grained molecular dynamics force field. We estimate the height of the energy barriers the kink needs to cross over, in order to propagate along the backbone lattice. We analyse how these barriers gives rise to both stresses and reliefs which control the kink movement. For this, we deform a natively folded protein structure by parallel translating the kink along the backbone away from its native position. We release the transposed kink, and we follow how it propagates along the backbone towards the native location. We observe that the dissipative forces which are exerted on the kink by the various energy barriers, have a pivotal role in determining how a protein folds towards its native state.

Adam K. Sieradzan; Antti Niemi; Xubiao Peng

2014-10-28T23:59:59.000Z

306

Integrating PV into Performance Contracts: Barriers and Trends  

E-Print Network [OSTI]

value chain includes the technology's value as a peak-shaving and load management tool, as a sourceIntegrating PV into Performance Contracts: Barriers and Trends Wilson Rickerson Center for Energy incorporated photovoltaic (PV) systems as part of an overall building energy service strategy. This paper

Delaware, University of

307

Molecular assemblies as protective barriers and adhesion promotion interlayer  

DOE Patents [OSTI]

A protective diffusion barrier having adhesive qualities for metalized surfaces is provided by a passivating agent having the formula HS--(CH{sub 2}){sub 11}--COOH which forms a very dense, transparent organized molecular assembly or layer that is impervious to water, alkali, and other impurities and corrosive substances that typically attack metal surfaces. 8 figs.

King, D.E.; Czanderna, A.W.; Kennedy, C.E.

1996-01-30T23:59:59.000Z

308

Molecular assemblies as protective barriers and adhesion promotion interlayer  

DOE Patents [OSTI]

A protective diffusion barrier having adhesive qualifies for metalized surfaces is provided by a passivating agent having the formula HS--(CH.sub.2).sub.11 --COOH Which forms a very dense, transparent organized molecular assembly or layer that is impervious to water, alkali, and other impurities and corrosive substances that typically attack metal surfaces.

King, David E. (Lakewood, CO); Czanderna, Alvin W. (Denver, CO); Kennedy, Cheryl E. (Lafayette, CO)

1996-01-01T23:59:59.000Z

309

Helping Utilities Make Smart Solar Decisions Utility Barriers  

E-Print Network [OSTI]

Helping Utilities Make Smart Solar Decisions Utility Barriers Key issues facing deployment of utility-scale solar PV plants. Sandra Burton Regional Director March 8 ­ 9, 2011 Brookhaven National Lab #12;About SEPA Developed by utilities to facilitate the integration of solar electric power. SEPA

Homes, Christopher C.

310

Renewable Energy Permitting Barriers in Hawaii: Experience from the Field  

SciTech Connect (OSTI)

This white paper presents a summary of the solicited input from permitting agencies and renewable energy developers on the permitting process in Hawaii to provide stakeholders in Hawaii, particularly those involved in permitting, with information on current permitting barriers that renewable energy developers are experiencing.

Busche, S.; Donnelly, C.; Atkins, D.; Fields, R.; Black, C.

2013-03-01T23:59:59.000Z

311

EasyVoice: Breaking barriers for people with voice disabilities  

E-Print Network [OSTI]

disabilities. With the advances in computing power, new applications have been developed for helping peopleEasyVoice: Breaking barriers for people with voice disabilities Paulo A. Condado and Fernando G,flobo}@ualg.pt Abstract. Text-to-speech technology has been broadly used to help people with voice disabilities

Condado, Paulo

312

Opportunities, Barriers and Actions for Industrial Demand Response in  

E-Print Network [OSTI]

LBNL-1335E Opportunities, Barriers and Actions for Industrial Demand Response in California A.T. Mc of Global Energy Partners. This work described in this report was coordinated by the Demand Response Demand Response in California. PIER Industrial/Agricultural/Water EndUse Energy Efficiency Program. CEC

313

Mobility barrier for disabled people DEJOUX, Virginie; ARMOOGUM, Jimmy  

E-Print Network [OSTI]

Mobility barrier for disabled people DEJOUX, Virginie; ARMOOGUM, Jimmy 12 th WCTR, July 11-15, 2010 92 55 88 virginie.dejoux@inrets.fr ARMOOGUM Jimmy INRETS - DEST Site de Marne-la-Vallée. "Le Descartes 2" 2 rue de la Butte Verte 93166 Noisy le grand cedex Telephone: 33 1 45 92 55 79 jimmy

Paris-Sud XI, Université de

314

Mercury Oxidation via Catalytic Barrier Filters Phase II  

SciTech Connect (OSTI)

In 2004, the Department of Energy National Energy Technology Laboratory awarded the University of North Dakota a Phase II University Coal Research grant to explore the feasibility of using barrier filters coated with a catalyst to oxidize elemental mercury in coal combustion flue gas streams. Oxidized mercury is substantially easier to remove than elemental mercury. If successful, this technique has the potential to substantially reduce mercury control costs for those installations that already utilize baghouse barrier filters for particulate removal. Completed in 2004, Phase I of this project successfully met its objectives of screening and assessing the possible feasibility of using catalyst coated barrier filters for the oxidation of vapor phase elemental mercury in coal combustion generated flue gas streams. Completed in September 2007, Phase II of this project successfully met its three objectives. First, an effective coating method for a catalytic barrier filter was found. Second, the effects of a simulated flue gas on the catalysts in a bench-scale reactor were determined. Finally, the performance of the best catalyst was assessed using real flue gas generated by a 19 kW research combustor firing each of three separate coal types.

Wayne Seames; Michael Mann; Darrin Muggli; Jason Hrdlicka; Carol Horabik

2007-09-30T23:59:59.000Z

315

105K West Isolation Barrier Acceptance Test results  

SciTech Connect (OSTI)

The objective of this document is to report and interpret the findings of the isolation barrier acceptance tests performed in 105KW/100K. The tests were performed in accordance with the test plan and acceptance test procedure. The test report contains the test data. This document compares the test data against the criteria. A discussion of the leak rate analytical characterization describes how the flow characteristics flow rate will be determined using the test data from the test report. Two modes of water loss were considered; basin and/or discharge chute leakage, and evaporation. An initial test established baseline leakage data and instrumentation performance. Test 2 evaluated the sealing performance of the isolation barrier by inducing an 11 in. (27.9 cm) level differential across the barrier. The leak rate at this 11 in. (27.9 cm) level is extrapolated to the 16 ft. (4.9 m) level differential postulated in the DBE post seismic event. If the leak rate, adjusted for evaporation and basin leakage (determined from Test 1), is less than the SAR limit of 1,500 gph (5,680 lph) at a 16 ft (4.9 m) level differential, the barriers pass the acceptance test.

McCracken, K.J. [ICF Kaiser Hanford Co., Richland, WA (United States); Irwin, J.J. [Westinghouse Hanford Co., Richland, WA (United States)

1995-05-18T23:59:59.000Z

316

PET radiotracers: crossing the bloodbrain barrier and surviving  

E-Print Network [OSTI]

PET radiotracers: crossing the blood­brain barrier and surviving metabolism Victor W. Pike in the living human brain with positron emission tomography (PET) are increasingly useful in clinical research or undesirable metabolism. These issues are reviewed. Emerging PET radiotracers for measuring efflux transporter

Shen, Jun

317

Experimental investigation of a horizontal flexible-membrane wave barrier  

E-Print Network [OSTI]

A series of experiments is conducted in a two-dimensional glass-walled wave tank to confirm numerical solutions based on two-dimensional linear hydro-elastic theory for a horizontal flexible-membrane wave barrier. The model test is performed by a...

Choi, Hae-Jin

1997-01-01T23:59:59.000Z

318

Algebrization: A New Barrier in Complexity Theory Scott Aaronson #  

E-Print Network [OSTI]

for some of the very same problems (like inverting one­way functions) that we wanted to prove were hard. 1 for Advanced Study Abstract Any proof of P #= NP will have to overcome two barriers: relativization and natural an MA­protocol for the Inner Product function with O ( # n log n) communication (essentially matching

Wigderson, Avi

319

Algebrization: A New Barrier in Complexity Theory Scott Aaronson  

E-Print Network [OSTI]

problems (like inverting one-way functions) that we wanted to prove were hard. 1.1 The Need for a New for Advanced Study Abstract Any proof of P = NP will have to overcome two barriers: relativization and natural-protocol for the Inner Product function with O ( n log n) communication (essentially matching a lower bound of Klauck

Wigderson, Avi

320

The development of surface barriers at the Hanford Site  

SciTech Connect (OSTI)

Engineered barriers are being developed to isolate wastes disposed of near the earth`s surface at the US Department of Energy`s (DOE) Hanford Site near Richland, Washington. Much of the waste that would be disposed of by in-place stabilization currently is located in relatively shallow subsurface structures such as solid waste burial grounds, tanks, vaults, and cribs. Unless protected in some way, the wastes could be transported to the accessible environment via the following pathways: plant, animal, and human intrusion; water infiltration; erosion; and the exhalation of noxious gases. Permanent isolation surface barriers have been proposed to protect wastes disposed of ``in place`` from the transport pathways identified previously (Figure 1). The protective barrier consists of a variety of different materials (e.g., fine soil, sand, gravel, riprap, asphalt, etc.) placed in layers to form an above-grade mound directly over the waste zone. Surface markers are being considered for placement around the periphery of the waste sites to inform future generations of the nature and hazards of the buried wastes. In addition, throughout the protective barrier, subsurface markers could be placed to warn any inadvertent human intruders of the dangers of the buried wastes (Figure 2).

Wing, N.R. [Westinghouse Hanford Co., Richland, WA (United States); Gee, G.W. [Pacific Northwest Lab., Richland, WA (United States)

1994-03-01T23:59:59.000Z

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


321

Molten silicate interactions with thermal barrier coatings Hengbei Zhao a,  

E-Print Network [OSTI]

Molten silicate interactions with thermal barrier coatings Hengbei Zhao a, , Carlos G. Levi b is enhanced by incorporation of through-thickness pores within the coating. However, molten calcium­magnesium­alumino­silicate in dissolution of the coat- ing in the silicate melt, precipitation of new phases, and the elimination

Wadley, Haydn

322

Ultrasonic Examination of Double-Shell Tank 241-AN-104. Examination Completed August 2005  

SciTech Connect (OSTI)

COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic examination of selected portions of Double-Shell Tank 241-AN-104. PNNL is responsible for preparing a report(s) that describes the results of the COGEMA ultrasonic examinations.

Pardini, Allan F.; Posakony, Gerald J.

2005-09-15T23:59:59.000Z

323

BARRIER ISSUES TO THE UTILIZATION OF BIOMASS  

SciTech Connect (OSTI)

The Energy & Environmental Research Center (EERC) is conducting a project to examine the fundamental issues limiting the use of biomass in small industrial steam/power systems in order to increase the future use of this valuable domestic resource. Specifically, the EERC is attempting to elucidate the ash-related problems--grate clinkering and heat exchange surface fouling--associated with cofiring coal and biomass in grate-fired systems. Utilization of biomass in stoker boilers designed for coal can be a cause of concern for boiler operators. Boilers that were designed for low volatile fuels with lower reactivities can experience damaging fouling when switched to higher volatile and more reactive lower-rank fuels, such as when cofiring biomass. Higher heat release rates at the grate can cause more clinkering or slagging at the grate because of higher temperatures. Combustion and loss of volatile matter can start too early for biomass fuels compared to the design fuel, vaporizing alkali and chlorides which then condense on rear walls and heat exchange tube banks in the convective pass of the stoker, causing noticeable increases in fouling. In addition, stoker-fired boilers that switch to biomass blends may encounter new chemical species such as potassium sulfates and various chlorides, in combination with different flue gas temperatures because of changes in fuel heating value which can adversely affect ash deposition behavior. The goal of this project is to identify the primary ash mechanisms related to grate clinkering and heat exchange surface fouling associated with cofiring coal and biomass--specifically wood and agricultural residuals--in grate-fired systems, leading to future mitigation of these problems. The specific technical objectives of the project are: Modification of an existing EERC pilot-scale combustion system to simulate a grate-fired system; Verification testing of the simulator; Laboratory-scale testing and fuel characterization to determine ash formation and potential fouling mechanisms and to optimize activities in the modified pilot-scale system; and Pilot-scale testing in the grate-fired system. The resulting data will be collected, analyzed, and reported to elucidate ash-related problems during biomass-coal cofiring and offer a range of potential solutions.

Bruce C. Folkedahl; Darren D. Schmidt; Greg F. Weber; Christopher J. Zygarlicke

2001-10-01T23:59:59.000Z

324

BARRIER ISSUES TO THE UTILIZATION OF BIOMASS  

SciTech Connect (OSTI)

The Energy & Environmental Research Center (EERC) has completed a project to examine fundamental issues that could limit the use of biomass in small industrial steam/power systems in order to increase the future use of this valuable domestic resource. Specifically, the EERC attempted to elucidate the ash-related problems--grate clinkering and heat exchange surface fouling--associated with cofiring coal and biomass in grate-fired systems. Utilization of biomass in stoker boilers designed for coal can be a cause of concern for boiler operators. Boilers that were designed for low-volatile fuels with lower reactivities can experience problematic fouling when switched to higher-volatile and more reactive coal-biomass blends. Higher heat release rates at the grate can cause increased clinkering or slagging at the grate due to higher temperatures. Combustion and loss of volatile matter can start much earlier for biomass fuels compared to design fuel, vaporizing alkali and chlorides which then condense on rear walls and heat exchange tube banks in the convective pass of the stoker, causing noticeable increases in fouling. In addition, stoker-fired boilers that switch to biomass blends may encounter new chemical species such as potassium sulfates, various chlorides, and phosphates. These species in combination with different flue gas temperatures, because of changes in fuel heating value, can adversely affect ash deposition behavior. The goal of this project was to identify the primary ash mechanisms related to grate clinkering and heat exchange surface fouling associated with cofiring coal and biomass--specifically wood and agricultural residuals--in grate-fired systems, leading to future mitigation of these problems. The specific technical objectives of the project were: (1) Modification of an existing pilot-scale combustion system to simulate a grate-fired system. (2) Verification testing of the simulator. (3) Laboratory-scale testing and fuel characterization to determine ash formation and potential fouling mechanisms and to optimize activities in the modified pilot-scale system. (4) Pilot-scale testing in the grate-fired system. The resulting data were used to elucidate ash-related problems during coal-biomass cofiring and offer a range of potential solutions.

Bruce C. Folkedahl; Jay R. Gunderson; Darren D. Schmidt; Greg F. Weber; Christopher J. Zygarlicke

2002-09-01T23:59:59.000Z

325

Test of the adequacy of using smoothly joined parabolic segments to parametrize the multihumped fission barriers in actinides  

SciTech Connect (OSTI)

The adequacy of using smoothly joined parabolic segments to parametrize the multihumped fission barriers has been tested by examining its simultaneous consistency with the three relevant fission observables, namely, the near-barrier fission cross sections, isomeric half-lives, and the ground-state spontaneous fission half-lives of a wide variety of a total of 25 actinide nuclides. The penetrabilities through such multihumped fission barriers have been calculated in the Wentzel-Kramers-Brillouin approximation, and the various fission half-lives have been determined using the formalism given earlier by Nix and Walker. The results of our systematic analysis of these actinide nuclides suggest that such a parametrization is quite adequate at least for the even-even nuclei, as it reproduces satisfactorily their various observed fission characteristics. Major difficulties remain, however, for the odd mass and for the doubly odd nuclei where the calculated ground-state spontaneous fission half-lives are found to be several orders of magnitude larger than those measured. Possible reasons for such discrepancies are discussed. Fission branching ratios of the decay of the shape isomers in various actinide nuclides have also been calculated and are compared with their measured values.

Bhandari, B.S. (Department of Physics, Faculty of Science, University of Garyounis, Benghazi (Libya))

1990-10-01T23:59:59.000Z

326

E-Print Network 3.0 - altered blood-brain barrier Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

blood-brain barrier Search Powered by Explorit Topic List Advanced Search Sample search results for: altered blood-brain barrier Page: << < 1 2 3 4 5 > >> 1 Applications are...

327

Beyond parallax barriers: applying formal optimization methods to multilayer automultiscopic displays  

E-Print Network [OSTI]

This paper focuses on resolving long-standing limitations of parallax barriers by applying formal optimization methods. We consider two generalizations of conventional parallax barriers. First, we consider general two-layer ...

Lanman, Douglas

328

Microstructural examination of irradiated vanadium alloys  

SciTech Connect (OSTI)

Microstructural examination results are reported for a V-5Cr-5Ti unirradiated control specimens of heat BL-63 following annealing at 1050{degrees}C, and V-4Cr-4Ti heat BL-47 irradiated in three conditions from the DHCE experiment: at 425{degrees}C to 31 dpa and 0.39 appm He/dpa, at 600{degrees}C to 18 dpa and 0.54 appm He/dpa and at 600{degrees}C to 18 dpa and 4.17 appm He/dpa.

Gelles, D.S. [Pacific Northwest National Lab., Richland, WA (United States); Chung, H.M. [Argonne National Lab., IL (United States)

1997-04-01T23:59:59.000Z

329

Postirradiation examination of capsule GF-4. [HTGR  

SciTech Connect (OSTI)

The GF-4 capsule test was irradiated in the SILOE reactor at Grenoble, France between April 8, 1975 and July 26, 1976. High-enriched uranium (HEU) UC/sub 2/ and weak acid resin (WAR) UC/sub x/O/sub y/ fissile and ThO/sub 2/ fertile particles were tested. Postirradiation examination of cured-in-place fuel rods showed no fuel rod/graphite element interaction. In addition, all rods exhibited adequate structural integrity. Irradiation-induced dimensional changes for rods containing all TRISO-coated fuel were consistent with model predictions; however, rods containing BISO-coated fuel exhibited greater volumetric contractions than predicted.

Kovacs, W.J.; Sedlak, B.J.

1980-10-01T23:59:59.000Z

330

Hot Fuel Examination Facility/South  

SciTech Connect (OSTI)

This document describes the potential environmental impacts associated with proposed modifications to the Hot Fuel Examination Facility/South (HFEF/S). The proposed action, to modify the existing HFEF/S at the Argonne National Laboratory-West (ANL-W) on the Idaho National Engineering Laboratory (INEL) in southeastern Idaho, would allow important aspects of the Integral Fast Reactor (IFR) concept, offering potential advantages in nuclear safety and economics, to be demonstrated. It would support fuel cycle experiments and would supply fresh fuel to the Experimental Breeder Reactor-II (EBR-II) at the INEL. 35 refs., 12 figs., 13 tabs.

Not Available

1990-05-01T23:59:59.000Z

331

Energy master planning: Innovative Design and Energy Analysis Service (IDEAS) for new commercial construction  

SciTech Connect (OSTI)

This report describes a research and development strategy that a municipal energy management office took to adopt and promote an energy design and analysis program for commercial building development projects. Included are details of the technical information, technology transfer tools, marketing strategies and methods of integrating the energy efficient design suggestion program into the existing city development process for maximizing the administration and effectiveness of the service. The Office of Environmental Management of the City of San Jose developed and is offering a Pilot Program aimed at improving the energy efficiency of its commercial and light industrial building stock. The proposed Innovative Design and Energy Analysis Service (IDEAS) would offer technical information and assistance to Developers, Architects and Engineers in the area of energy conscious design of new commercial construction in the City of San Jose. The main thrust of the service will be to influence new building design through the implementation of cost-effective energy conservation options such that building operational performance is better than that resulting from implementing mandated state energy standards. 21 refs., 10 figs., 6 tabs.

Not Available

1989-11-01T23:59:59.000Z

332

From blood to the brain: can systemically transplanted mesenchymal stem cells cross the blood-brain barrier?  

E-Print Network [OSTI]

and function of the blood-brain barrier,” Neurobiology ofV. Zlokovic, “The blood-brain barrier in health and chroniccell biology of the blood- brain barrier,” Annual Review of

Liu, Linan; Eckert, Mark A; Riazifar, Hamidreza; Kang, Dong-Ku; Agalliu, Dritan; Zhao, Weian

2013-01-01T23:59:59.000Z

333

Recent progress in the study of fission barriers in covariant density functional theory  

E-Print Network [OSTI]

Recent progress in the study of fission barriers of actinides and superheavy nuclei within covariant density functional theory is overviewed.

A. V. Afanasjev; H. Abusara; P. Ring

2012-05-10T23:59:59.000Z

334

E-Print Network 3.0 - atmospheric dielectric barrier Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Force Measurement Techniques and Preliminary Results Summary: Results Using Aerogels and Ferroelectrics for Dielectric Barrier Discharge Actuators Ryan Durscher......

335

ORGANIZATIONAL, INTERFACE AND FINANCIAL BARRIERS TO THE COMMERCIAL DEVELOPMENT OF COMMUNITY ENERGY SYSTEMS  

E-Print Network [OSTI]

Organizational Barriers to Cogeneration • • • OrganizationTechnologies Cogeneration. • MSW . Wind. ResidentialPage Industrial Cogeneration. • Residential Photovoltaics. •

Schladale, R.

2010-01-01T23:59:59.000Z

336

Effect of neutron transfer in the fusion process near and below the Coulomb barrier  

SciTech Connect (OSTI)

Near-barrier and sub-barrier fusion of weakly bound neutron-rich isotopes of lithium is explored within the empirical channel coupling model. Several combinations of colliding nuclei are proposed, for which strong enhancement of the sub-barrier fusion is predicted owing to coupling with neutron transfer channels.

Rachkov, V. A.; Adel, A.; Karpov, A. V.; Denikin, A. S.; Zagrebaev, V. I. [Flerov Laboratory of Nuclear Reactions, JINR, Dubna, 141980, Moscow region (Russian Federation); Physics Department, Faculty of Science, Cairo University, Giza (Egypt); Flerov Laboratory of Nuclear Reactions, JINR, Dubna, 141980, Moscow region (Russian Federation); Flerov Laboratory of Nuclear Reactions, JINR, Dubna, 141980, Moscow region (Russian Federation) and International University 'Dubna', Dubna, 141980, Moscow region (Russian Federation); Flerov Laboratory of Nuclear Reactions, JINR, Dubna, 141980, Moscow region (Russian Federation)

2012-10-20T23:59:59.000Z

337

Multiple-humped fission and fusion barriers of the heaviest elements and ellipsoidal deformations  

E-Print Network [OSTI]

leading possibly to superheavy elements, double-humped potential barriers appear for cold fusionMultiple-humped fission and fusion barriers of the heaviest elements and ellipsoidal deformations G barriers and the predicted half-lives of actinides follow the experimental results. In the fusion path

Boyer, Edmond

338

Low temperature barriers with heat interceptor wells for in situ processes  

DOE Patents [OSTI]

A system for reducing heat load applied to a frozen barrier by a heated formation is described. The system includes heat interceptor wells positioned between the heated formation and the frozen barrier. Fluid is positioned in the heat interceptor wells. Heat transfers from the formation to the fluid to reduce the heat load applied to the frozen barrier.

McKinzie, II, Billy John (Houston, TX)

2008-10-14T23:59:59.000Z

339

Morphological barrier island changes and recovery of dunes after Hurricane Dennis, St. George Island, Florida  

E-Print Network [OSTI]

of the barrier island are analyzed, along with the short-term post-storm recovery of secondary dunes. ResultsMorphological barrier island changes and recovery of dunes after Hurricane Dennis, St. George September 2009 Keywords: Dune recovery LiDAR Overwash Hurricane Dennis Barrier island During the summer

Fagherazzi, Sergio

340

Blood Brain Barrier group Multi drug resistance and P-glycoprotein efflux transporter: physiological roles and  

E-Print Network [OSTI]

1 Blood Brain Barrier group Multi drug resistance and P-glycoprotein efflux transporter-binding cassette) transporter family expressed in many tissue barriers (e.g. gut, lung, blood-brain barrier of many drugs to the brain and has been the subject of intensive research in the last 10 years

Applebaum, David

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


341

In vivo transcranial cavitation threshold detection during ultrasound-induced bloodbrain barrier opening in mice  

E-Print Network [OSTI]

In vivo transcranial cavitation threshold detection during ultrasound-induced blood­brain barrier cavitation threshold detection during ultrasound-induced blood­brain barrier opening in mice Yao-Sheng Tung1 cavitation response associated with blood­brain barrier (BBB) opening as induced by transcranial focused

Konofagou, Elisa E.

342

Simulation of the high temperature impression of thermal barrier coatings with columnar microstructure  

E-Print Network [OSTI]

the deformation resistance of actual EB-PVD layers and its application to a range of thermal barrier materials [9Simulation of the high temperature impression of thermal barrier coatings with columnar of thermal barrier coatings (TBCs) are affected by their high temperature mechanical properties: especially

Hutchinson, John W.

343

Design of Roadside Barrier Systems Placed on Mechanically Stabilized Earth (MSE) Retaining Walls  

E-Print Network [OSTI]

and LRFD ..............................................................25 2.3.3 Previous Crash Test of Barrier on Edge of MSE Wall......................................26 2.4 Survey of State DOTs... and Conclusion.............................................................................................76 5 5 FT HIGH MSE WALL AND BARRIER STUDY ......................................................84 5.1 5 Ft High MSE Wall and Barrier Study Description...

Kim, Kang

2010-01-16T23:59:59.000Z

344

Studies of switching field and thermal energy barrier distributions in a FePt nanoparticle system  

E-Print Network [OSTI]

Studies of switching field and thermal energy barrier distributions in a FePt nanoparticle system X dependence of the thermal stability factor, the width of the thermal energy barrier distribution- ropy energy distribution and the interaction and the thermal energy barrier distribution determined

Laughlin, David E.

345

3/3/2014 Big ideas for tinywindmills at UTA | RenewablesBiz http://www.renewablesbiz.com/article/14/03/big-ideas-tiny-windmills-uta 1/3  

E-Print Network [OSTI]

, renewable energy dwarfed by big utility ET Solar Builds Large Scale Solar Power Projects in UK Big ideas Energy Central E-Newsletters Recent News/Commentary Three Firms Win Solar Plant Tenders In Va. politics for tiny windmills at UTA DTE Energy selects SolarCurrents projects more news News Insights #12

Chiao, Jung-Chih

346

National Postirradiation Examination Workshop Needs Assessment  

SciTech Connect (OSTI)

The development of nuclear fuels and materials requires a clear understanding of irradiation effects on the materials performance. Development of this understanding at present relies on irradiation experiments ranging from tests aimed at targeted phenomenology to integral effects under both prototypic and off-normal conditions. Within the new DOE paradigm of a science-based approach aimed at more fundamental understanding of fuel performance, more specialized experiments and measurements are needed. To support the development of such fuels and materials, especially under a science-based development strategy, the nation needs a consolidated, state-of-the-art, post-irradiation examination (PIE) capability that can reliably extract the needed data from the experimental programs. In some cases, new capabilities beyond the current state-of-the art need to be developed and implemented to perform measurements that were not needed in the more empirically based approaches used in earlier fuel development and qualification programs. A national PIE workshop was held in March 2011 which solicited the PIE needs that are necessary to support both DOE and U.S. goals for nuclear energy. These needs recognize that significant capability already exists that must be maintained, upgraded and continued while bringing online new capabilities that support research on highly irradiated fuels and materials. Further, these needs mostly focus on the reducing the time and length scales in which materials can be examined and coupling these measurements with a robust modeling capability within an infrastructure that can meet the needs of higher demand and a variety of customers. A consolidated capability where a comprehensive set of measurements can be simultaneously performed is essential for efficiently implementing fuel and materials development programs in a cost effective manner. This document captures the national PIE needs necessary to support current and future research, and where possible identifies where those capabilities are allocated.

Not listed

2011-09-01T23:59:59.000Z

347

Examination Rules and Procedures for the Examinations Committee 2010-2011, adopted on March 18th Examination Rules and Procedures of the TU/e  

E-Print Network [OSTI]

Examination Rules and Procedures for the Examinations Committee 2010-2011, adopted on March 18th 2010 1 Examination Rules and Procedures of the TU/e The Examinations Committee for the Bachelor's and Rules and Procedures of which read as follows: Chapter 1 GENERAL PROVISIONS Article 1

Eindhoven, Technische Universiteit

348

Ferroelectric modulation on resonant tunneling through perovskite double-barriers  

SciTech Connect (OSTI)

The negative differential resistance (NDR) due to resonance tunneling is achieved at room temperature in perovskite double-barrier heterostructures composed of a 10 unit-cell-thick SrTiO{sub 3} quantum well sandwiched in two 10 unit-cell-thick LaAlO{sub 3} barriers. The NDR occurs at 1.2?V and does not change with voltage cycling. When the paraelectric SrTiO{sub 3} quantum well is replaced by a ferroelectric BaTiO{sub 3}, the onset of the NDR can be modulated by polarization switching in the ultrathin BaTiO{sub 3}. A polarization pointing to the collector lowers the NDR voltage but a polarization pointing to the emitter increases it. The shift of the NDR voltage is ascribed to reversal of the extra electric field in the quantum well due to the polarization switching.

Du, Ruifang; Qiu, Xiangbiao; Li, Aidong; Wu, Di, E-mail: diwu@nju.edu.cn [National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093 (China)

2014-04-07T23:59:59.000Z

349

Condensation of actin filaments pushing against a barrier  

E-Print Network [OSTI]

We develop a model to describe the force generated by the polymerization of an array of parallel biofilaments. The filaments are assumed to be coupled only through mechanical contact with a movable barrier. We calculate the filament density distribution and the force-velocity relation with a mean-field approach combined with simulations. We identify two regimes: a non-condensed regime at low force in which filaments are spread out spatially, and a condensed regime at high force in which filaments accumulate near the barrier. We confirm a result previously known from other related studies, namely that the stall force is equal to N times the stall force of a single filament. In the model studied here, the approach to stalling is very slow, and the velocity is practically zero at forces significantly lower than the stall force.

K. Tsekouras; D. Lacoste; K. Mallick; J. -F. Joanny

2011-10-06T23:59:59.000Z

350

Computational Design and Experimental Validation of New Thermal Barrier Systems  

SciTech Connect (OSTI)

This project (10/01/2010-9/30/2014), “Computational Design and Experimental Validation of New Thermal Barrier Systems”, originates from Louisiana State University (LSU) Mechanical Engineering Department and Southern University (SU) Department of Computer Science. This project will directly support the technical goals specified in DE-FOA-0000248, Topic Area 3: Turbine Materials, by addressing key technologies needed to enable the development of advanced turbines and turbine-based systems that will operate safely and efficiently using coal-derived synthesis gases. In this project, the focus is to develop and implement novel molecular dynamics method to improve the efficiency of simulation on novel TBC materials; perform high performance computing (HPC) on complex TBC structures to screen the most promising TBC compositions; perform material characterizations and oxidation/corrosion tests; and demonstrate our new thermal barrier coating (TBC) systems experimentally under integrated gasification combined cycle (IGCC) environments.

Guo, Shengmin; Yang, Shizhong; Khosravi, Ebrahim

2014-04-01T23:59:59.000Z

351

105 K East isolation barrier acceptance analysis report  

SciTech Connect (OSTI)

The objective of this document is to report and interpret the findings of the isolation barrier acceptance tests performed in 105KE/100K. The tests were performed in accordance with the test plan (McCracken 1995c) and acceptance test procedure (McCracken 1995a). The test report (McCracken 1995b) contains the test data. This document compares the test data (McCracken 1995b) against the criteria (McCracken 1995a, c). A discussion of the leak rate analytical characterization (Irwin 1995) describes how the flow characteristics and the flow rate will be determined using the test data from the test report (McCracken 1995b). The barriers must adequately control the leakage from the main basin to the discharge chute to less than the 1,500 gph (5,680 lph) Safety Analysis Report (SAR 1994) limit.

McCracken, K.J. [ICF Kaiser Hanford Co., Richland, WA (United States); Irwin, J.J. [Westinghouse Hanford Co., Richland, WA (United States)

1995-05-31T23:59:59.000Z

352

Transformer coupling for transmitting direct current through a barrier  

DOE Patents [OSTI]

The transmission system for transmitting direct current from an energy source on one side of an electrical and mechanical barrier to a load on the other side of the barrier utilizes a transformer comprising a primary core on one side of the transformer and a secondary core on the other side of the transformer. The cores are magnetically coupled selectively by moving a magnetic ferrite coupler in and out of alignment with the poles of the cores. The direct current from the energy source is converted to a time varying current by an oscillating circuit, which oscillating circuit is optically coupled to a secondary winding on the secondary core to interrupt oscillations upon the voltage in the secondary winding exceeding a preselected level. 4 figs.

Brown, R.L.; Guilford, R.P.; Stichman, J.H.

1987-06-29T23:59:59.000Z

353

Transformer coupling for transmitting direct current through a barrier  

DOE Patents [OSTI]

The transmission system for transmitting direct current from an energy source on one side of an electrical and mechanical barrier to a load on the other side of the barrier utilizes a transformer comprising a primary core on one side of the transformer and a secondary core on the other side of the transformer. The cores are magnetically coupled selectively by moving a magnetic ferrite coupler in and out of alignment with the poles of the cores. The direct current from the energy source is converted to a time varying current by an oscillating circuit, which oscillating circuit is optically coupled to a secondary winding on the secondary core to interrupt oscillations upon the voltage in the secondary winding exceeding a preselected level.

Brown, Ralph L. (Albuquerque, NM); Guilford, Richard P. (Albuquerque, NM); Stichman, John H. (Albuquerque, NM)

1988-01-01T23:59:59.000Z

354

Plasma gun notes Here are some notes based on an idea of Paul Bellan's (see his Spheromak  

E-Print Network [OSTI]

Plasma gun notes Here are some notes based on an idea of Paul Bellan's (see his Spheromak book end C. L is an inductance per unit length and L0 is the inductance of the system before the spheromak starts to move. The spheromak is a sliding short of mass m impaled on the center electrode. The potential

Brown, Michael R.

355

Initial queries into the notion of Power Users of Technology -Investigating ideas of production, competence and identity  

E-Print Network [OSTI]

' or young people's1 use of technology. What distinguishes the Power User research initiative and makes1 Initial queries into the notion of Power Users of Technology - Investigating ideas of production, which I find very important in order to un- derstand the notion of "Power Users of Technology

Paris-Sud XI, Université de

356

SMITH IDEALS OF STRUCTURED RING SPECTRA Abstract. Pursuing ideas of Jeff Smith, we develop a homotopy theory of  

E-Print Network [OSTI]

SMITH IDEALS OF STRUCTURED RING SPECTRA MARK HOVEY Abstract. Pursuing ideas of Jeff Smith, we develop a homotopy theory of ideals of monoids in a symmetric monoidal model category. This includes Smith ideals of structured ring spectra and of differential graded algebras. Such Smith ideals

Hovey, Mark

357

factors in V. cholerae. But this idea raises possi-ble public-health issues: the activation of quo-  

E-Print Network [OSTI]

., Skorupski, K., Lenz, D. H., Taylor, R. K. & Bassler, B. L. Cell 110, 303­314 (2002). 2. Zhu Peltier et al. on page 813 of this issue3 . They apply basic ideas about the solubility of gases ageneednothaverequiredextremeamountsof CO2 in the atmosphere, nor have been delayed for millions of years. Peltier and colleagues' new

Kaufman, Alan Jay

358

Have a sustainability idea that needs some additional support? The Sustainability Advisory Committee invites students, faculty, and staff  

E-Print Network [OSTI]

Have a sustainability idea that needs some additional support? The Sustainability Advisory sustainability. The Committee will review project proposals and provide direct guidance and feedback to promising and departments to broaden collaboration and support. The Sustainability Advisory Committee recommends long- term

Engel, Jonathan

359

Core Internal Transport Barriers in Alcator C-Mod  

E-Print Network [OSTI]

-Mod Group Supported by DoE grant DE-FC02-99ER54512 #12;Alcator C-Mod Introduction Core Internal TransportAlcator C-Mod Core Internal Transport Barriers in Alcator C-Mod Catherine Fiore MIT Plasma Science types of core ITBs in Alcator C-Mod. Off-Axis ICRF generated core ITBs Spontaneous ITBs at H- to L

Fiore, Catherine L.

360

Engineered Barrier System Degradation, Flow, and Transport Process Model Report  

SciTech Connect (OSTI)

The Engineered Barrier System Degradation, Flow, and Transport Process Model Report (EBS PMR) is one of nine PMRs supporting the Total System Performance Assessment (TSPA) being developed by the Yucca Mountain Project for the Site Recommendation Report (SRR). The EBS PMR summarizes the development and abstraction of models for processes that govern the evolution of conditions within the emplacement drifts of a potential high-level nuclear waste repository at Yucca Mountain, Nye County, Nevada. Details of these individual models are documented in 23 supporting Analysis/Model Reports (AMRs). Nineteen of these AMRs are for process models, and the remaining 4 describe the abstraction of results for application in TSPA. The process models themselves cluster around four major topics: ''Water Distribution and Removal Model, Physical and Chemical Environment Model, Radionuclide Transport Model, and Multiscale Thermohydrologic Model''. One AMR (Engineered Barrier System-Features, Events, and Processes/Degradation Modes Analysis) summarizes the formal screening analysis used to select the Features, Events, and Processes (FEPs) included in TSPA and those excluded from further consideration. Performance of a potential Yucca Mountain high-level radioactive waste repository depends on both the natural barrier system (NBS) and the engineered barrier system (EBS) and on their interactions. Although the waste packages are generally considered as components of the EBS, the EBS as defined in the EBS PMR includes all engineered components outside the waste packages. The principal function of the EBS is to complement the geologic system in limiting the amount of water contacting nuclear waste. A number of alternatives were considered by the Project for different EBS designs that could provide better performance than the design analyzed for the Viability Assessment. The design concept selected was Enhanced Design Alternative II (EDA II).

E.L. Hardin

2000-07-17T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

In-situ formation of multiphase deposited thermal barrier coatings  

DOE Patents [OSTI]

A multiphase ceramic thermal barrier coating is provided. The coating is adapted for use in high temperature applications in excess of about 1200.degree. C., for coating superalloy components of a combustion turbine engine. The coating comprises a ceramic single or two oxide base layer disposed on the substrate surface; and a ceramic oxide reaction product material disposed on the base layer, the reaction product comprising the reaction product of the base layer with a ceramic single or two oxide overlay layer.

Subramanian, Ramesh

2004-01-13T23:59:59.000Z

362

Summary of Post Irradiation Examination Results of the AFIP-6 Failure  

SciTech Connect (OSTI)

The AFIP-6 test assembly was irradiated for one cycle in the Advanced Test Reactor at Idaho National Laboratory. The experiment was designed to test two monolithic fuel plates at power and burn-ups which bounded the operating conditions of both ATR and HFIR driver fuel. Both plates contain a solid U-Mo fuel foil with a zirconium diffusion barrier between 6061-aluminum cladding plates bonded by hot isostatic pressing. The experiment was designed with an orifice to restrict the coolant flow in order to obtain prototypic coolant temperature conditions. While these coolant temperatures were obtained, flow restriction resulted in low heat transfer coefficients and the failure of the fuel plates. The results from the post irradiation examinations and some observations of the failure mechanisms are outlined herein.

Adam Robinson; Daniel M. Wachs; Francine Rice; Danielle Perez

2011-10-01T23:59:59.000Z

363

Water-retaining barrier and method of construction  

DOE Patents [OSTI]

An agricultural barrier providing a medium for supporting plant life in an arid or semi-arid land region having a ground surface, the barrier being disposed on native soil of the region, the barrier including: a first layer composed of pieces of basalt, the first layer being porous and being in contact with the native soil; a porous second layer of at least one material selected from at least one of sand and gravel, the second layer being less porous than, and overlying, the first layer; and a porous third layer containing soil which favors plant growth, the third layer being less porous than, and overlying, the second layer and having an exposed upper surface, wherein the porosities of the second and third layers differ from one another by an amount which impedes transport of soil from the first layer into the second layer. Soil for the third layer may be provided by washing salinated or contaminated soil with water and using the washed soil for the third layer.

Adams, Melvin R. (Richland, WA); Field, Jim G. (Richland, WA)

1996-01-01T23:59:59.000Z

364

TRITIUM BARRIER MATERIALS AND SEPARATION SYSTEMS FOR THE NGNP  

SciTech Connect (OSTI)

Contamination of downstream hydrogen production plants or other users of high-temperature heat is a concern of the Next Generation Nuclear Plant (NGNP) Project. Due to the high operating temperatures of the NGNP (850-900 C outlet temperature), tritium produced in the nuclear reactor can permeate through heat exchangers to reach the hydrogen production plant, where it can become incorporated into process chemicals or the hydrogen product. The concentration limit for tritium in the hydrogen product has not been established, but it is expected that any future limit on tritium concentration will be no higher than the air and water effluent limits established by the NRC and the EPA. A literature survey of tritium permeation barriers, capture systems, and mitigation measures is presented and technologies are identified that may reduce the movement of tritium to the downstream plant. Among tritium permeation barriers, oxide layers produced in-situ may provide the most suitable barriers, though it may be possible to use aluminized surfaces also. For tritium capture systems, the use of getters is recommended, and high-temperature hydride forming materials such as Ti, Zr, and Y are suggested. Tritium may also be converted to HTO in order to capture it on molecular sieves or getter materials. Counter-flow of hydrogen may reduce the flux of tritium through heat exchangers. Recommendations for research and development work are provided.

Sherman, S; Thad Adams, T

2008-07-17T23:59:59.000Z

365

In-situ chemical barrier and method of making  

DOE Patents [OSTI]

A chemical barrier is formed by injecting a suspension of solid particles or colloids into the subsurface. First, a stable colloid suspension is made including a surfactant and a non-Newtonian fluid. This stable colloid suspension is characterized by colloid concentration, colloid size, colloid material, solution ionic strength, and chemical composition. A second step involves injecting the optimized stable colloid suspension at a sufficiently high flow rate to move the colloids through the subsurface sediment, but not at such a high rate so as to induce resuspending indigenous soil particles in the aquifer. While injecting the stable colloid suspension, a withdrawal well may be used to draw the injected colloids in a direction perpendicular to the flow path of a contaminant plume. The withdrawal well, may then be used as an injection well, and a third well, in line with the first two wells, may then be used as a withdrawal well, thereby increasing the length of the colloid barrier. This process would continue until emplacement of the colloid barrier is complete. 7 figs.

Cantrell, K.J.; Kaplan, D.I.

1999-01-12T23:59:59.000Z

366

In-situ chemical barrier and method of making  

DOE Patents [OSTI]

A chemical barrier is formed by injecting a suspension of solid particles or colloids into the subsurface. First, a stable colloid suspension is made including a surfactant and a non-Newtonian fluid. This stable colloid suspension is characterized by colloid concentration, colloid size, colloid material, solution ionic strength, and chemical composition. A second step involves injecting the optimized stable colloid suspension at a sufficiently high flow rate to move the colloids through the subsurface sediment, but not at such a high rate so as to induce resuspending indigenous soil particles in the aquifer. While injecting the stable colloid suspension, a withdrawal well may be used to draw the injected colloids in a direction perpendicular to the flow path of a contaminant plume. The withdrawal well, may then be used as an injection well, and a third well, in line with the first two wells, may then be used as a withdrawal well, thereby increasing the length of the colloid barrier. This process would continue until emplacement of the colloid barrier is complete.

Cantrell, Kirk J. (West Richland, WA); Kaplan, Daniel I. (Richland, WA)

1999-01-01T23:59:59.000Z

367

Engineered sorbent barriers for low-level waste disposal.  

SciTech Connect (OSTI)

The Engineered Sorbent Barriers Program at Pacific Northwest Laboratory is investigating sorbent materials to prevent the migration of soluble radio nuclides from low-level waste sites. These materials would allow water to pass, preventing the bathtub effect at humid sites. Laboratory studies identifield promising sorbent materials for three key radionuclides: for cesium, greensand; for cobalt, activated charcoal; and for strontium, synthetic zeolite or clinoptilolite. Mixtures of these sorbent materials were tested in 0.6-m-diameter columns using radioactive leachates. To simulate expected worst-case conditions, the leachate solution contained the radionuclides, competing cations, and a chelating agent and was adjusted to a pH of 5. A sorbent barrier comprised of greensand (1 wt%), activated charcoal (6 wt%), synthetic zeolite (20 wt%), and local soil (73 wt%) achieved the decontamination factors necessary to meet the regulatory performance requirements established for this study. Sorbent barriers can be applied to shallow-land burial, as backfill around the waste or engineered structures, or as backup to other liner systems. 7 refs., 14 figs., 12 tabs.

Freeman, H.D.; Mitchell, S.J.; Buelt, J.L.

1986-12-01T23:59:59.000Z

368

Water-retaining barrier and method of construction  

DOE Patents [OSTI]

An agricultural barrier is disclosed which provides a medium for supporting plant life in an arid or semi-arid land region having a ground surface. The barrier is disposed on native soil of the region. The barrier includes a first porous layer composed of pieces of basalt, and is in contact with the native soil. There is a less porous second layer of at least one material selected from at least one of sand and gravel. The second layer overlies the first layer. A third layer, less porous than the second layer, contains soil which favors plant growth. The third layer overlies the second layer and has an exposed upper surface. The porosities of the second and third layers differ from one another by an amount which impedes transport of soil from the first layer into the second layer. Soil for the third layer may be provided by washing salinated or contaminated soil with water and using the washed soil for the third layer. 2 figs.

Adams, M.R.; Field, J.G.

1996-02-20T23:59:59.000Z

369

Protection against malevolent use of vehicles at Nuclear Power Plants. Vehicle barrier system selection guidance  

SciTech Connect (OSTI)

This manual provides a simplified procedure for selecting land vehicle barriers that will stop the design basis vehicle threat adopted by the U.S. Nuclear Regulatory Commission. Proper selection and construction of vehicle barriers should prevent intrusion of the design basis vehicle. In addition, vital safety related equipment should survive a design basis vehicle bomb attack when vehicle barriers are properly selected, sited, and constructed. This manual addresses passive vehicle barriers, active vehicle barriers, and site design features that can be used to reduce vehicle impact velocity.

Nebuda, D.T.

1994-08-01T23:59:59.000Z

370

13-03-09 9:37 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 2 | Ether Wave Propaganda Page 1 of 4http://etherwave.wordpress.com/2012/10/21/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-2/  

E-Print Network [OSTI]

13-03-09 9:37 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 2 | Ether Wave Propaganda Page 1 of 4http://etherwave.wordpress.com/2012/10/21/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-2/ Modernity, the Cold War, and New Whig Histories of Ideas, Pt. 2 October 21, 2012 Posted

Solovey, Mark

371

12-11-24 7:47 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 3 Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/11/17/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-3/  

E-Print Network [OSTI]

12-11-24 7:47 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 3 « Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/11/17/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-3/ Modernity, the Cold War, and New Whig Histories of Ideas, Pt. 3 November 17, 2012 Posted

Solovey, Mark

372

13-03-09 9:32 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 1 | Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/09/22/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-1/  

E-Print Network [OSTI]

13-03-09 9:32 PMModernity, the Cold War, and New Whig Histories of Ideas, Pt. 1 | Ether Wave Propaganda Page 1 of 6http://etherwave.wordpress.com/2012/09/22/modernity-the-cold-war-and-new-whig-histories-of-ideas-pt-1/ Modernity, the Cold War, and New Whig Histories of Ideas, Pt. 1 September 22, 2012 Posted

Solovey, Mark

373

An Examination of Avoided Costs in Utah  

SciTech Connect (OSTI)

The Utah Wind Working Group (UWWG) believes there are currently opportunities to encourage wind power development in the state by seeking changes to the avoided cost tariff paid to qualifying facilities (QFs). These opportunities have arisen as a result of a recent renegotiation of Pacificorp's Schedule 37 tariff for wind QFs under 3 MW, as well as an ongoing examination of Pacificorp's Schedule 38 tariff for wind QFs larger than 3 MW. It is expected that decisions made regarding Schedule 38 will also impact Schedule 37. Through the Laboratory Technical Assistance Program (Lab TAP), the UWWG has requested (through the Utah Energy Office) that LBNL provide technical assistance in determining whether an alternative method of calculating avoided costs that has been officially adopted in Idaho would lead to higher QF payments in Utah, and to discuss the pros and cons of this method relative to the methodology recently adopted under Schedule 37 in Utah. To accomplish this scope of work, I begin by summarizing the current method of calculating avoided costs in Utah (per Schedule 37) and Idaho (the ''surrogate avoided resource'' or SAR method). I then compare the two methods both qualitatively and quantitatively. Next I present Pacificorp's four main objections to the use of the SAR method, and discuss the reasonableness of each objection. Finally, I conclude with a few other potential considerations that might add value to wind QFs in Utah.

Bolinger, Mark; Wiser, Ryan

2005-01-07T23:59:59.000Z

374

Electrical characteristics and interface structure of magnetic tunnel junctions with hafnium oxyfluoride barrier  

SciTech Connect (OSTI)

We have studied the effects of fluorine inclusion on the electrical transport characteristics and interface structure of the hafnium oxide barrier in a magnetic tunnel junction. The tunneling magnetoresistance (TMR) and resistance-area (RA) as a function of oxidation time show that the TMR ratio of the hafnium oxyfluoride barrier is higher (8.3%) than that of the hafnium oxide barrier (5.7%) at their optimum conditions, and the oxyfluoride barrier junctions maintain a high TMR ratio even when the RA product increases by three orders of magnitude. X-ray photoelectron spectroscopy analysis shows that the fluorine atoms in the oxyfluoride barrier play an important role in the formation of a barrier with uniform composition. We believe that the initial fluoride layer is causing the subsequent oxygen diffusion to slow down, resulting in the formation of a defect-free hafnium oxide layer. These results are consistent with what we have found for aluminum oxyfluoride barriers.

Yu, Y.Y.; Kim, D.S.; Char, K. [Center for Strongly Correlated Materials Research and School of Physics, Seoul National University, Seoul 151-742 (Korea, Republic of)

2004-12-01T23:59:59.000Z

375

Applications of Skyrme energy-density functional to fusion reactions spanning the fusion barriers  

E-Print Network [OSTI]

The Skyrme energy density functional has been applied to the study of heavy-ion fusion reactions. The barriers for fusion reactions are calculated by the Skyrme energy density functional with proton and neutron density distributions determined by using restricted density variational (RDV) method within the same energy density functional together with semi-classical approach known as the extended semi-classical Thomas-Fermi method. Based on the fusion barrier obtained, we propose a parametrization of the empirical barrier distribution to take into account the multi-dimensional character of real barrier and then apply it to calculate the fusion excitation functions in terms of barrier penetration concept. A large number of measured fusion excitation functions spanning the fusion barriers can be reproduced well. The competition between suppression and enhancement effects on sub-barrier fusion caused by neutron-shell-closure and excess neutron effects is studied.

Min Liu; Ning Wang; Zhuxia Li; Xizhen Wu; Enguang Zhao

2006-01-25T23:59:59.000Z

376

Decontamination systems information and research program -- Literature review in support of development of standard test protocols and barrier design models for in situ formed barriers project  

SciTech Connect (OSTI)

The US Department of Energy is responsible for approximately 3,000 sites in which contaminants such as carbon tetrachloride, trichlorethylene, perchlorethylene, non-volatile and soluble organic and insoluble organics (PCBs and pesticides) are encountered. In specific areas of these sites radioactive contaminants are stored in underground storage tanks which were originally designed and constructed with a 30-year projected life. Many of these tanks are now 10 years beyond the design life and failures have occurred allowing the basic liquids (ph of 8 to 9) to leak into the unconsolidated soils below. Nearly one half of the storage tanks located at the Hanford Washington Reservation are suspected of leaking and contaminating the soils beneath them. The Hanford site is located in a semi-arid climate region with rainfall of less than 6 inches annually, and studies have indicated that very little of this water finds its way to the groundwater to move the water down gradient toward the Columbia River. This provides the government with time to develop a barrier system to prevent further contamination of the groundwater, and to develop and test remediation systems to stabilize or remove the contaminant materials. In parallel to remediation efforts, confinement and containment technologies are needed to retard or prevent the advancement of contamination plumes through the environment until the implementation of remediation technology efforts are completed. This project examines the various confinement and containment technologies and protocols for testing the materials in relation to their function in-situ.

NONE

1994-12-01T23:59:59.000Z

377

Capsule HRB-15B postirradiation examination report  

SciTech Connect (OSTI)

Capsule HRB-15B design tested 184 thin graphite trays containing unbonded fuel particles to peak exposures of 6.6 x 10/sup 25/ n/m/sup 2/ (E > 29 fJ)/sub HTGR/ fast fluence, approx. 27% fissions per initial metal atom (FIMA) fissile burnup, and 6% FIMA fertile burnup at nominal time-averaged temperatures of 815 to 915/sup 0/C. The capsule tested a variety of low-enriched uranium (approx. 19.5% U-235) fissile particle types, including UC/sub 2/, UC/sub x/O/sub y/, UO/sub 2/, zirconium-buffered UO/sub 2/ (referred to in this report as UO/sub 2//sup *), and 1:1(Th,U)O/sub 2/ with both TRISO and silicon-BISO coatings. All fertile particles were ThO/sub 2/ with BISO, silicon-BISO, or TRISO coatings. The findings indicated that all TRISO particles retained virtually all of their fission product inventories, except small quantities of silver, at these irradiation temperatures, while some of the silicon-BISO particles released significant amounts of both silver and cesium. No kernel migration, pressure vessel, or outer pyrolytic carbon (OPyC) failures were observed in the fuel particles, which had total diameters of < 900 ..mu..m; however, the incidence of failed OPyC coatings was found to increase with particle size in the TRISO inert particles, which had diameters of 1000 to 1200 ..mu..m. UO/sub 2//sup */ particles exhibited no detrimental irradiation effects, but they contained pure carbon precipitates in the kernels after irradiation which were not observed in the undoped UO/sub 2/ particles. Postirradiation examination revealed no differences in the irradiation performance of three UC/sub x/O/sub y/ kernel types with varying oxygen/uranium ratios.

Ketterer, J.W.; Bullock, R.E.

1981-06-01T23:59:59.000Z

378

Ultrasonic Examination of Double-Shell Tank 241-SY-101. Examination Completed March 2004.  

SciTech Connect (OSTI)

COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic nondestructive examination of selected portions of Double-Shell Tank 241-SY-101. The purpose of this examination was to provide information that could be used to evaluate the integrity of the wall of the primary tank. The requirements for the ultrasonic examination of Tank 241-SY-101 were to detect, characterize (identify, size, and locate), and record measurements made of any wall thinning, pitting, or cracks that might be present in the wall of the primary tank. Any measurements that exceed the requirements set forth in the Engineering Task Plan (ETP), RPP-17750 (Jensen 2003) and summarized on page 1 of this document, are reported to CH2M Hill and the Pacific Northwest National Laboratory (PNNL) for further evaluation. Under the contract with CH2M Hill, all data is to be recorded on disk and paper copies of all measurements are provided to PNNL for third-party evaluation. PNNL is responsible for preparing a report that describes the results of the COGEMA ultrasonic examinations.

Pardini, Allan F.; Posakony, Gerald J.

2004-07-22T23:59:59.000Z

379

Ultrasonic Examination of Double-Shell Tank 241-AP-106. Examination Completed November 2004  

SciTech Connect (OSTI)

COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic nondestructive examination of selected portions of Double-Shell Tank 241-AP-106. The purpose of this examination was to provide information that could be used to evaluate the integrity of the wall of the primary tank. The requirements for the ultrasonic examination of Tank 241-AP-106 were to detect, characterize (identify, size, and locate), and record measurements made of any wall thinning, pitting, or cracks that might be present in the wall of the primary tank. Any measurements that exceed the requirements set forth in the Engineering Task Plan (ETP), RPP-22571 (Jensen 2004) and summarized on page 1 of this document, are reported to CH2M Hill and the Pacific Northwest National Laboratory (PNNL) for further evaluation. Under the contract with CH2M Hill, all data is to be recorded on disk and paper copies of all measurements are provided to PNNL for third-party evaluation. PNNL is responsible for preparing a report that describes the results of the COGEMA ultrasonic examinations.

Pardini, Allan F.; Posakony, Gerald J.

2004-12-14T23:59:59.000Z

380

Ultrasonic Examination of Double-Shell Tank 241-SY-101. Examination Completed March 2004.  

SciTech Connect (OSTI)

COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic nondestructive examination of selected portions of Double-Shell Tank 241-SY-101. The purpose of this examination was to provide information that could be used to evaluate the integrity of the wall of the primary tank. The requirements for the ultrasonic examination of Tank 241-SY-101 were to detect, characterize (identify, size, and locate), and record measurements made of any wall thinning, pitting, or cracks that might be present in the wall of the primary tank. Any measurements that exceed the requirements set forth in the Engineering Task Plan (ETP), RPP-17750 (Jensen 2003) and summarized on page 1 of this document, are reported to CH2M Hill and the Pacific Northwest National Laboratory (PNNL) for further evaluation. Under the contract with CH2M Hill, all data is to be recorded on disk and paper copies of all measurements are provided to PNNL for third-party evaluation. PNNL is responsible for preparing a report that describes the results of the COGEMA ultrasonic examinations.

Pardini, Allan F.; Posakony, Gerald J.

2004-05-25T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

Ultrasonic Examination of Double-Shell Tank 241-AY-101 Examination Completed August 2003  

SciTech Connect (OSTI)

COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic nondestructive examination of selected portions of Double-Shell Tank 241-AY-101. The purpose of this examination was to provide information that could be used to evaluate the integrity of the wall of the secondary tank. The requirements for the ultrasonic examination of Tank 241-AY-101 were to detect, characterize (identify, size, and locate), and record measurements made of any wall thinning or pitting that might be present in the wall of the secondary tank. Any measurements that exceed the requirements set forth in the Engineering Task Plan (ETP), RPP-11832 (Jensen 2002) and summarized on page 1 of this document, are reported to CH2M Hill and the Pacific Northwest National Laboratory (PNNL) for further evaluation. Under the contract with CH2M Hill, all data is to be recorded on disk and paper copies of all measurements are provided to PNNL for third-party evaluation. PNNL is responsible for preparing a report that describes the results of the COGEMA ultrasonic examinations.

Pardini, Allan F.; Posakony, Gerald J.

2003-12-01T23:59:59.000Z

382

Ultrasonic Examination of Double-Shell Tank 241-AP-104. Examination Completed August 2004  

SciTech Connect (OSTI)

COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic nondestructive examination of selected portions of Double-Shell Tank 241-AP-104. The purpose of this examination was to provide information that could be used to evaluate the integrity of the wall of the primary tank. The requirements for the ultrasonic examination of Tank 241-AP-104 were to detect, characterize (identify, size, and locate), and record measurements made of any wall thinning, pitting, or cracks that might be present in the wall of the primary tank. Any measurements that exceed the requirements set forth in the Engineering Task Plan (ETP), RPP-17750 (Jensen 2003) and summarized on page 1 of this document, are reported to CH2M Hill and the Pacific Northwest National Laboratory (PNNL) for further evaluation. Under the contract with CH2M Hill, all data is to be recorded on disk and paper copies of all measurements are provided to PNNL for third-party evaluation. PNNL is responsible for preparing a report that describes the results of the COGEMA ultrasonic examinations.

Pardini, Allan F.; Posakony, Gerald J.

2004-09-30T23:59:59.000Z

383

Near and sub-barrier fusion as a probe of nuclear structure Sub-barrier fusion is particularly sensitive to the tail of the nuclear matter distribution,  

E-Print Network [OSTI]

Near and sub-barrier fusion as a probe of nuclear structure Sub-barrier fusion is particularly sensitive to the tail of the nuclear matter distribution, hence provides a good probe of the neutron and proton distributions. Measuring fusion for an isotopic chain of projectile nuclei one can sensitively

de Souza, Romualdo T.

384

Surface barrier height for different Al compositions and barrier layer thicknesses in AlGaN/GaN heterostructure field effect transistors  

SciTech Connect (OSTI)

In this paper, we present a physics based analytical model for the calculation of surface barrier height for given values of barrier layer thicknesses and Al mole fractions. An explicit expression for the two dimensional electron gas density is also developed incorporating the change in polarization charges for different Al mole fractions.

Goyal, Nitin, E-mail: goyalnitin.iitr@gmail.com; Fjeldly, Tor A. [Norwegian University of Science and Technology, Trondheim (Norway); Iniguez, Benjamin [Universitat Rovira i Virgili, Tarragona (Spain)

2013-12-04T23:59:59.000Z

385

Mechanistic Examination of C?–C? Bond Cleavages...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mechanistic Examination of C?–C? Bond Cleavages of Tryptophan Residues during Dissociations of Molecular Mechanistic Examination of C?–C? Bond...

386

UBC Undergraduate Student Examination Collection / UBC Library (collector)  

E-Print Network [OSTI]

UBC Undergraduate Student Examination Collection / UBC Library (collector) Compiled by Christopher) #12;Collection Description UBC Undergraduate Student Examination Collection / UBC Library (collector

Handy, Todd C.

387

Role of inorganic chemistry on nuclear energy examined  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

July Role of inorganic chemistry on nuclear energy examined Role of inorganic chemistry on nuclear energy examined Inorganic chemistry can provide insight and improve technical...

388

Systematics of the deduced fission barriers for the doubly even transactinium nuclei  

SciTech Connect (OSTI)

The systematics of the fission barrier shapes of a total of 47 doubly even actinide and transactinide nuclei have been studied using the double-humped fission barrier model. The fission barrier has been parametrized in terms of four smoothly joined parabolic segments. The penetrabilities through such double-humped fission barriers have been calculated in the Wentzel-Kramers-Brillouin approximation, and the various fission half-lives have been determined using the formalism given earlier by Nix and Walker. The various parameters of such fission barriers have been deduced by requiring their simultaneous consistency with the various relevant fission observables, namely, the near-barrier fission cross sections, isomeric energies and isomeric half-lives, where available, and the ground-state spontaneous fission half-lives in the region 90{le}{ital Z}{le}98, and such model calculations with some further justifiable asssumptions have been extended to the region of the still heavier nuclei with {ital Z}{ge}100. The results of our systematic study of the heights of the inner and the outer barriers of the double-humped fission barriers corresponding to such doubly even nuclei suggest that while the height of the inner barrier remains approximately constant in the entire region of such nuclei, the deduced heights of the outer barrier decrease rather sharply and continuously with the increase in the value of the fissility parameter until one reaches the element Rf ({ital Z}=104).

Bhandari, B.S.; Bendardaf, Y.B. (Department of Physics, Faculty of Science, University of Garyounis, Benghazi (Libya))

1992-06-01T23:59:59.000Z

389

Demonstration of close-coupled barriers for subsurface containment of buried waste  

SciTech Connect (OSTI)

A close-coupled barrier is produced by first installing a conventional cement grout curtain followed by a thin inner lining of a polymer grout. The resultant barrier is a cement polymer composite that has economic benefits derived from the cement and performance benefits from the durable and resistant polymer layer. Close-coupled barrier technology is applicable for final, interim, or emergency containment of subsurface waste forms. Consequently, when considering the diversity of technology application, the construction emplacement and material technology maturity, general site operational requirements, and regulatory compliance incentives, the close-coupled barrier system provides an alternative for any hazardous or mixed waste remediation plan. This paper discusses the installation of a close-coupled barrier and the subsequent integrity verification. The demonstration was installed at a benign site at the Hanford Geotechnical Test Facility, 400 Area, Hanford, Washington. The composite barrier was emplaced beneath a 7,500 liter tank. The tank was chosen to simulate a typical DOE Complex waste form. The stresses induced on the waste form were evaluated during barrier construction. The barrier was constructed using conventional jet grouting techniques. Drilling was completed at a 45{degree} angle to the ground, forming a conical shaped barrier with the waste form inside the cone. Two overlapping rows of cylindrical cement columns were grouted in a honeycomb fashion to form the secondary backdrop barrier layer. The primary barrier, a high molecular weight polymer manufactured by 3M Company, was then installed providing a relatively thin inner liner for the secondary barrier. The primary barrier was emplaced by panel jet grouting with a dual wall drill stem, two phase jet grouting system.

Dwyer, B.P. [Sandia National Labs., Albuquerque, NM (United States). Environmental Restoration Technologies Dept.

1996-05-01T23:59:59.000Z

390

Summary of Workshop: Barriers to Energy Efficient Residential Ventilation  

SciTech Connect (OSTI)

The objectives for this workshop were to bring together those with different viewpoints on the implementation of energy efficient ventilation in homes to share their perspectives. The primary benefit of the workshop is to allow the participants to get a broader understanding of the issues involved and thereby make themselves more able to achieve their own goals in this area. In order to achieve this objective each participant was asked to address four objectives from their point of view: (1) Drivers for energy efficient residential ventilation: Why is this an important issue? Who cares about it? Where is the demand: occupants, utilities, regulation, programs, etc? What does sustainability mean in this context? (2) Markets & Technologies: What products, services and systems are out there? What kinds of things are in the pipeline? What is being installed now? Are there regional or other trends? What are the technology interactions with other equipment and the envelope? (3) Barriers to Implementation: What is stopping decision makers from implementing energy-efficient residential ventilation systems? What kind of barriers are there: technological, cost, informational, structural, etc. What is the critical path? (4) Solutions: What can be done to overcome the barriers and how can/should we do it? What is the role of public vs. private institutions? Where can investments be made to save energy while improving the indoor environment? Ten participants prepared presentations for the workshop. Those presentations are included in sections at the end of this workshop report. These presentations provided the principal context for the discussions that happened during the workshop. Critical path issues were raised and potential solutions discussed during the workshop. As a secondary objective they have listed key issues and some potential consensus items which resulted from the discussions.

Sherman, Max; Sherman, Max

2008-01-10T23:59:59.000Z

391

General Corrosion and Localized Corrosion of Waste Package Outer Barrier  

SciTech Connect (OSTI)

The waste package design for the License Application is a double-wall waste package underneath a protective drip shield (BSC 2004 [DIRS 168489]; BSC 2004 [DIRS 169480]). The purpose and scope of this model report is to document models for general and localized corrosion of the waste package outer barrier (WPOB) to be used in evaluating waste package performance. The WPOB is constructed of Alloy 22 (UNS N06022), a highly corrosion-resistant nickel-based alloy. The inner vessel of the waste package is constructed of Stainless Steel Type 316 (UNS S31600). Before it fails, the Alloy 22 WPOB protects the Stainless Steel Type 316 inner vessel from exposure to the external environment and any significant degradation. The Stainless Steel Type 316 inner vessel provides structural stability to the thinner Alloy 22 WPOB. Although the waste package inner vessel would also provide some performance for waste containment and potentially decrease the rate of radionuclide transport after WPOB breach before it fails, the potential performance of the inner vessel is far less than that of the more corrosion-resistant Alloy 22 WPOB. For this reason, the corrosion performance of the waste package inner vessel is conservatively ignored in this report and the total system performance assessment for the license application (TSPA-LA). Treatment of seismic and igneous events and their consequences on waste package outer barrier performance are not specifically discussed in this report, although the general and localized corrosion models developed in this report are suitable for use in these scenarios. The localized corrosion processes considered in this report are pitting corrosion and crevice corrosion. Stress corrosion cracking is discussed in ''Stress Corrosion Cracking of the Drip Shield, the Waste Package Outer Barrier, and the Stainless Steel Structural Material'' (BSC 2004 [DIRS 169985]).

K.G. Mon

2004-10-01T23:59:59.000Z

392

155ENSEANZA DE LAS CIENCIAS, 2000, 18 (2), 155-169 MS ALL DE LAS IDEAS PREVIAS  

E-Print Network [OSTI]

155ENSE�ANZA DE LAS CIENCIAS, 2000, 18 (2), 155-169 MÁS ALLÁ DE LAS IDEAS PREVIAS COMO DIFICULTADES METACOGNITIVAS DE LOS ALUMNOS DE CIENCIAS CAMPANARIO, JUAN MIGUEL1 y OTERO, JOS� C. 1 E-mail: fscampanario@alcala.es 2 E-mail: fsotero@alcala.es Grupo de Investigación en Aprendizaje de las Ciencias. Departamento de

Campanario, Juan Miguel

393

Fusion barrier distributions in systems with finite excitation energy  

E-Print Network [OSTI]

Eigen-channel approach to heavy-ion fusion reactions is exact only when the excitation energy of the intrinsic motion is zero. In order to take into account effects of finite excitation energy, we introduce an energy dependence to weight factors in the eigen-channel approximation. Using two channel problem, we show that the weight factors are slowly changing functions of incident energy. This suggests that the concept of the fusion barrier distribution still holds to a good approximation even when the excitation energy of the intrinsic motion is finite. A transition to the adiabatic tunneling, where the coupling leads to a static potential renormalization, is also discussed.

K. Hagino; N. Takigawa; A. B. Balantekin

1997-06-24T23:59:59.000Z

394

Properties and stability of a Texas barrier beach inlet  

E-Print Network [OSTI]

, breakthroughs from the bay side on both wide and narrow islands have been attributed to the gradual buildup of water in the lagoon, followed by a sudden shift in wind to an offshore direction (gg). Thus, large quantities of water are piled up on the island... of central Texas coastal inlets (44), attributes these characteristics of stable inlets to four factors: 1) the position of bays north of the barrier island, 2) strong north winds which funnel water through the inlets, 3) the direction of longshore drift...

Mason, Curtis

1971-01-01T23:59:59.000Z

395

Influence of dust on the emissivity of radiant barriers  

E-Print Network [OSTI]

beloved children Anita Maria and Felipe Homero, and my family in Ecuador. The support and love of my mother and father, and my family-in-law were vital to overcome the difficulties. I would like to mention my sister in law Luly for her special attention... To My Beloved Father To Anita Maria and Fehpe Homero TABLE OF CONTENTS ABSTRACT Page ACKNOWLEDGMENTS DEDICATION V 1 1 LIST OF FIGURES Xl NOMENCLATURE . X111 1. INTRODUCTION 2. LITERATURE REVIEW 3. TOPICS ON RADIANT BARRIERS PERFORMANCE 3. 1...

Noboa, Homero Luis

1991-01-01T23:59:59.000Z

396

Nanopillar Spin Filter Tunnel Junctions with Manganite Barriers  

E-Print Network [OSTI]

promising FI tunnel barrier material for SFTJ. In this work, we investigate the spin filtering properties of Sm0.75Sr0.25MnO3 (SSMO) manganite ultrathin films in LNO/SSMO/LNO tunnel junctions. SSMO films were grown by pulsed laser deposition (PLD) onto Sr... -plane rotation vis-à-vis the substrate, i.e. the alignment of [110] of orthorhombic SSMO with the [100] of the underlying cubic SrTiO3 (STO) substrate. Film thickness was calculated from both X-ray reflectivity (not shown) and diffraction fringes around the (004...

Prasad, Bhagwati; Egilmez, Mehmet; Schoofs, Frank; Fix, Thomas; Vickers, Mary E; Zhang, Wenrui; Jian, Jie; Wang, Haiyan; Blamire, Mark G

2014-04-17T23:59:59.000Z

397

Surface charge in dielectric barrier discharge plasma actuators  

SciTech Connect (OSTI)

Direct measurements of the dielectric surface potential and its dynamics in asymmetric dielectric barrier discharge (DBD) plasma actuators show that the charge builds up at the dielectric surface and extends far downstream of the plasma. The surface charge persists for a long time (tens of minutes) after the driving voltage has been turned off. For a sinusoidal voltage waveform, the dielectric surface charges positively. With the voltage waveform consisting of nanosecond pulses superimposed on a dc bias, the sign of the dielectric surface charge is the same as the sign (polarity) of the bias voltage. The surface charging significantly affects DBD plasma actuator performance.

Opaits, D. F.; Shneider, M. N.; Miles, Richard B. [Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544 (United States); Likhanskii, A. V. [Pennsylvania State University, University Park, Pennsylvania 16802 (United States); Macheret, S. O. [Lockheed Martin Aeronautics Company, Palmdale, California 93599 (United States)

2008-07-15T23:59:59.000Z

398

Dynamics of kicked particles in a double-barrier structure  

E-Print Network [OSTI]

We study the classical and quantum dynamics of periodically kicked particles placed initially within an open double-barrier structure. This system does not obey the Kolmogorov-Arnold-Moser (KAM) theorem and displays chaotic dynamics. The phase space features induced by non-KAM nature of the system leads to dynamical features such as the non-equilibrium steady state, classically induced saturation of energy growth and momentum filtering. We also comment on the experimental feasibility of this system as well as its relevance in the context of current interest in classically induced localization and chaotic ratchets.

Harinder Pal; M. S. Santhanam

2010-11-29T23:59:59.000Z

399

Bioenergy in India: Barriers and Policy Options | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: Energy ResourcesJersey:form View source HistoryBarriers and Policy Options Jump

400

GBTL Opening Presentation_Tech Barriers | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdf Flash2006-53.pdf0.pdfCost Savings |Safety,ofOpening Presentation_Tech Barriers GBTL

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401

Page 1 of 16 Computer Science Boards of Examiners  

E-Print Network [OSTI]

Page 1 of 16 Computer Science Boards of Examiners The Department of Computer Science operates the following six Boards of Examiners for its on-campus provision: 1. The Computer Science Undergraduate Module Review Board of Examiners 2. The Computer Science Undergraduate Progression Board of Examiners 3

Atkinson, Katie

402

Ultrasonic Examination of Double-Shell Tank 241-SY-102. Examination Completed June 2004  

SciTech Connect (OSTI)

COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic nondestructive examination of selected portions of Double-Shell Tank 241-SY-102. The purpose of this examination was to provide information that could be used to evaluate the integrity of the wall of the primary tank. The requirements for the ultrasonic examination of Tank 241-SY-102 were to detect, characterize (identify, size, and locate), and record measurements made of any wall thinning, pitting, or cracks that might be present in the wall of the primary tank. Any measurements that exceed the requirements set forth in the Engineering Task Plan (ETP), RPP-17750 (Jensen 2003) and summarized on page 1 of this document, are reported to CH2M Hill and the Pacific Northwest National Laboratory (PNNL) for further evaluation. Under the contract with CH2M Hill, all data is to be recorded on disk and paper copies of all measurements are provided to PNNL for third-party evaluation. PNNL is responsible for preparing a report that describes the results of the COGEMA

Pardini, Allan F.; Posakony, Gerald J.

2004-07-20T23:59:59.000Z

403

Big Ideas: Creativity, Design and Innovation Camp Photo Permission Venture Engineering and Science at McMaster University is excited to offer, for the first  

E-Print Network [OSTI]

Big Ideas: Creativity, Design and Innovation Camp Photo Permission Form Venture Engineering and Science at McMaster University is excited to offer, for the first time, The Big Ideas: Creativity, Design and Innovation Camp. This is a new program from Venture Engineering and Science and Actua programs. Venture

Haykin, Simon

404

Dynamical analysis on heavy-ion fusion reactions near Coulomb barrier  

E-Print Network [OSTI]

The shell correction is proposed in the improved isospin dependent quantum molecular dynamics (ImIQMD) model, which plays an important role in heavy-ion fusion reactions near Coulomb barrier. By using the ImIQMD model, the static and dynamical fusion barriers, dynamical barrier distribution in the fusion reactions are analyzed systematically. The fusion and capture excitation functions for a series of reaction systems are calculated and compared with experimental data. It is found that the fusion cross sections for neutron-rich systems increase obviously, and the strong shell effects of two colliding nuclei result in a decrease of the fusion cross sections at the sub-barrier energies. The lowering of the dynamical fusion barriers favors the enhancement of the sub-barrier fusion cross sections, which is related to the nucleon transfer and the neck formation in the fusion reactions.

Zhao-Qing Feng; Gen-Ming Jin; Feng-Shou Zhang

2007-11-23T23:59:59.000Z

405

Sub- and above barrier fusion of loosely bound $^6$Li with $^{28}$Si  

E-Print Network [OSTI]

Fusion excitation functions are measured for the system $^6$Li+$^{28}$Si using the characteristic $\\gamma$-ray method, encompassing both the sub-barrier and above barrier regions, viz., $E_{lab}$= 7-24 MeV. Two separate experiments were performed, one for the above barrier region ($E_{lab}$= 11-24 MeV) and another for the below barrier region ($E_{lab}$= 7-10 MeV). The results were compared with our previously measured fusion cross section for the $^7$Li+$^{28}$Si system. We observed enhancement of fusion cross section at sub-barrier regions for both $^6$Li and $^7$Li, but yield was substantially larger for $^6$Li. However, for well above barrier regions, similar type of suppression was identified for both the systems.

Mandira Sinha; H. Majumdar; P. Basu; Subinit Roy; R. Bhattacharya; M. Biswas; M. K. Pradhan; R. Palit; I. Mazumdar; S. Kailas

2010-05-07T23:59:59.000Z

406

Demonstration of close-coupled barriers for subsurface containment of buried waste  

SciTech Connect (OSTI)

The primary objective of this project is to develop and demonstrate a close-coupled barrier for the containment of subsurface waste or contaminant migration. A close-coupled barrier is produced by first installing a conventional cement grout curtain followed by a thin inner lining of a polymer grout. The resultant barrier is a cement polymer composite that has economic benefits derived from the cement and performance benefits from the durable and resistant polymer layer. Close-coupled barrier technology is applicable for final, interim, or emergency containment of subsurface waste forms. Consequently, when considering the diversity of technology application, the construction emplacement and material technology maturity, general site operational requirements, and regulatory compliance incentives, the close-coupled barrier system provides an alternative for any hazardous or mixed waste remediation plan. This paper discusses the installation of a close-coupled barrier and the subsequent integrity verification.

Dwyer, B.P. [Sandia National Labs., Albuquerque, NM (United States); Heiser, J. [Brookhaven National Lab., Upton, NY (United States); Stewart, W. [Applied Geotechnical Engineering and Construction, Inc., Richland, WA (United States)

1996-12-01T23:59:59.000Z

407

Device and method for producing a containment barrier underneath and around in-situ buried waste  

DOE Patents [OSTI]

An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably on which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground and injection means for inserting barrier-forming material into the void. In one embodiment, the digging means is a continuous cutting chain. Mounted on the continuous cutting chain are cutter teeth for cutting through soil and discharge paddles for removing the loosened soil. This invention includes a barrier placement machine, a method for building an underground horizontal containment barrier using the barrier placement machine, and the underground containment system. Preferably the underground containment barrier goes underneath and around the site to be contained in a bathtub-type containment.

Gardner, Bradley M. (Idaho Falls, ID); Smith, Ann M. (Pocatello, ID); Hanson, Richard W. (Spokane, WA); Hodges, Richard T. (Deer Park, WA)

1998-01-01T23:59:59.000Z

408

Device and method for producing a containment barrier underneath and around in-situ buried waste  

DOE Patents [OSTI]

An apparatus is described for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably on which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground and injection means for inserting barrier-forming material into the void. In one embodiment, the digging means is a continuous cutting chain. Mounted on the continuous cutting chain are cutter teeth for cutting through soil and discharge paddles for removing the loosened soil. This invention includes a barrier placement machine, a method for building an underground horizontal containment barrier using the barrier placement machine, and the underground containment system. Preferably the underground containment barrier goes underneath and around the site to be contained in a bathtub-type containment. 15 figs.

Gardner, B.M.; Smith, A.M.; Hanson, R.W.; Hodges, R.T.

1998-08-11T23:59:59.000Z

409

Heat barrier for use in a nuclear reactor facility  

DOE Patents [OSTI]

A thermal barrier for use in a nuclear reactor facility is disclosed herein. Generally, the thermal barrier comprises a flexible, heat-resistant web mounted over the annular space between the reactor vessel and the guard vessel in order to prevent convection currents generated in the nitrogen atmosphere in this space from entering the relatively cooler atmosphere of the reactor cavity which surrounds these vessels. Preferably, the flexible web includes a blanket of heat-insulating material formed from fibers of a refractory material, such as alumina and silica, sandwiched between a heat-resistant, metallic cloth made from stainless steel wire. In use, the web is mounted between the upper edges of the guard vessel and the flange of a sealing ring which surrounds the reactor vessel with a sufficient enough slack to avoid being pulled taut as a result of thermal differential expansion between the two vessels. The flexible web replaces the rigid and relatively complicated structures employed in the prior art for insulating the reactor cavity from the convection currents generated between the reactor vessel and the guard vessel.

Keegan, Charles P. (South Huntingdon Twp., Westmoreland County, PA)

1988-01-01T23:59:59.000Z

410

Multi-barrier borehole canister designs for a tuff repository  

SciTech Connect (OSTI)

Initial dimensions are presented for proposed multi-barrier spent fuel borehole canisters using coated shells combined with sacrificial anodes and alkaline, oxide barriers to adjust potential and pH of the exterior shell into thermodynamically passive or immune regions of the Pourbaix diagram. Configuration of the 3 PWR canister is similar to the 1983 Site Characterization Project (SCP) borehole design. Canister dimensions were determined by using material performance data to calculate wall thickness, criticality, and sacrificial anode life. For the 3-PWR canister. Incoloy 825 is the preferred exterior canister shell material; copper-nickel alloy CDA 715 is the preferred interior canister shell material. High-lime concrete or alumina is preferred for the alkaline filler. Magnesium alloy is the preferred sacrificial anode material. Coating the canister exterior would be necessary to reduce corrosion current density to the point where a 10,000 year design life is possible. A 1 PWR canister has lower mass, thinner walls and lower criticality than the 3 PWR design. Equilibrium calculations for the historical average composition of J-13 water using the aquatic chemical speciation program WQ4F show positive saturation indices for several minerals, indicating potential for deposition on the canister exterior over long time periods. Uniform deposition could reduce corrosion rate by hindering transport of corrosion products from the canister surface. If deposition is non-uniform, local corrosion could increase through development of differential oxygen concentration cells.

James, D.E.; Skaggs, R.L.; Mohansingh, S.

1994-05-01T23:59:59.000Z

411

The UFA technology for characterization of in situ barrier materials  

SciTech Connect (OSTI)

Site characterizations, choices of remedial strategies for site restoration, and performance assessments of chosen strategies all require knowledge of the transport properties for subsurface materials, such as hydraulic conductivities, diffusion coefficients, sorption properties, and in situ recharge rates. Unsaturated conditions in the vadose zone are especially difficult to investigate because of the extreme variability in the transport properties of geologic materials as a function of water content. A new technique, the Unsaturated Flow Apparatus (UFA), was developed to rapidly attain hydraulic steady-state in all porous/fractured media, including multicomponent/multiphase systems. The larger driving forces obtainable with centrifugation techniques are combined with precision fluid flow through a rotating seal. Hydraulic steady state is achieved in a period of hours to days, instead of months to years, depending on the target water content and intrinsic permeability of the material. Barrier materials such as bentonite slurries, chemical barriers, cements, and asphalt concretes can be rapidly run in the UFA prior to emplacement to fine-tune formulations and identify any site-specific or substrate-specific problems that could not be identified without actual field testing.

Wright, J. [Pacific Northwest Lab., Richland, WA (United States); Conca, J.L. [Washington State Univ. Tri-Cities, Richland, WA (United States)

1994-11-01T23:59:59.000Z

412

Hygrothermal performance of an engineered clay barrier during sustained heating  

SciTech Connect (OSTI)

Bentonitic clay buffers, with a potential for swelling, form an integral part of the natural (geological formation)/engineered multi-barrier concepts being proposed for the disposal of heat-generating radioactive nuclear fuel wastes. The integrity of such barriers during thermal loadings is of primary interest to the assessment of their reliability. This paper discusses the results of a series of experiments performed to assess the performance of buffer material under sustained heating. These experiments were conducted in a large-scale granite block facility. The laboratory modeling approximately simulates the local environment that can be encountered in a disposal vault in a granitic rock mass. Experiments in which the power supply to an embedded heater was held constant are described. The temperature distributions within the buffer and the granite block together with the residual moisture content distributions are documented. Also discussed is the application of a computational model of coupled heat and moisture flows. Moisture and heat transfer in the buffer under coupled gradients is described by the Philip-de Vries-type model in which the hygrothermal parameters are determined separately.

Selvadurai, A.P.S. [Carleton Univ., Ottawa, Ontario (Canada). Dept. of Civil and Environmental Engineering; Onofrei, C. [AECL Research, Pinawa, Manitoba (Canada). Whiteshell Labs.

1993-12-31T23:59:59.000Z

413

Barriers to Planning for At-Risk students Implications for Teacher Planning  

E-Print Network [OSTI]

Barriers to Planning for At-Risk Students Implications for Teacher Planning Authors: B. Keith Lenz, Brenda Kissam, Janet Roth, Janis Bulgren, & Jeff Melvin The University of Kansas Center for Research on Learning No. 7'J. ©August, 1992... Barriers to Planning for At-Risk Students Implications for Teacher Planning B. Keith Lenz Brenda Kissam Janet Roth Janis Bulgren Jeff Melvin The University of Kansas Center for Research on Learning ©August 1992 Running Head: Barriers to Planning...

Lenz, B. Keith; Kissam, Brenda; Roth, Janet; Bulgren, Janis; Melvin, Jeff

1992-08-01T23:59:59.000Z

414

Hydraulic properties of an artificial tidal inlet through a Texas barrier beach  

E-Print Network [OSTI]

. These littoral barriers are depositional structures continually changed by waves, tidal currents, and winds. Often the only connections between the open ocean and the bays are small restricted channels through the barrier beaches. These chan- nels, or tidal... too large on wide barrier beaches to permit sufficient scour. Breakthroughs also have been found to be caused by gradual buildups of water in the bays, followed by wind shifts to an off. ? shore direction (27). This tends to be supported by Price...

Prather, Stanley Harold

1972-01-01T23:59:59.000Z

415

In-situ formation of multiphase air plasma sprayed barrier coatings for turbine components  

DOE Patents [OSTI]

A turbine component (10), such as a turbine blade, is provided which is made of a metal alloy (22) and a base, planar-grained thermal barrier layer (28) applied by air plasma spraying on the alloy surface, where a heat resistant ceramic oxide overlay material (32') covers the bottom thermal barrier coating (28), and the overlay material is the reaction product of the precursor ceramic oxide overlay material (32) and the base thermal barrier coating material (28).

Subramanian, Ramesh (Oviedo, FL)

2001-01-01T23:59:59.000Z

416

Barrier layer for a MCrAlY basecoat superalloy combination  

DOE Patents [OSTI]

A turbine component contains a substrate (22) such as a superalloy, a basecoat (24) of the type MCrAlY, and a continuous barrier layer (28) between the substrate and basecoat, where the barrier layer (28) is made of an alloy of (Re, Ta, Ru, Os)X, where X can be Ni, Co or their mixture, where the barrier layer is at least 2 micrometers thick and substantially prevents materials from both the basecoat and substrate from migrating through it.

Sabol, Stephen M. (Orlando, FL); Goedjen, John G. (Oviedo, FL); Vance, Steven J. (Orlando, FL)

2001-01-01T23:59:59.000Z

417

Adiabatic Heavy Ion Fusion Potentials for Fusion at Deep Sub-barrier Energies  

E-Print Network [OSTI]

The fusion cross sections from well above barrier to extreme sub-barrier energies have been analysed using the energy (E) and angular momentum (L) dependent barrier penetration model ({\\small{ELDBPM}}). From this analysis, the adiabatic limits of fusion barriers have been determined for a wide range of heavy ion systems. The empirical prescription of Wilzynska and Wilzynski has been used with modified radius parameter and surface tension coefficient values consistent with the parameterization of the nuclear masses. The adiabatic fusion barriers calculated from this prescription are in good agreement with the adiabatic barriers deduced from {\\small{ELDBPM}} fits to fusion data. The nuclear potential diffuseness is larger at adiabatic limit, resulting in a lower $\\hbar\\omega$ leading to increase of "logarithmic slope" observed at energies well below the barrier. The effective fusion barrier radius and curvature values are anomalously smaller than the predictions of known empirical prescriptions. A detailed comparison of the systematics of fusion barrier with and without L-dependence has been presented.

S. V. S. Sastry; S. Kailas; A. K. Mohanty; A. Saxena

2003-11-12T23:59:59.000Z

418

Deployment Barriers to Distributed Wind Energy: Workshop Report -- October 28, 2010  

SciTech Connect (OSTI)

This report presents key findings from the Department of Energy's Deployment Barriers to Distributed Wind Technology Workshop, held October 28, 2010 in Denver, Colorado.

Not Available

2011-07-01T23:59:59.000Z

419

E-Print Network 3.0 - artificial root-end barriers Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

, the latter usually made of plastic or synthetic fabric. Artificial barriers are held in place by an array... Station Aquatic Plant Control Research Program Effects...

420

Electrodeposited Ni/Ge and germanide schottky barriers for nanoelectronics applications.  

E-Print Network [OSTI]

??In recent years metal/semiconductor Schottky barriers have found numerous applications in nanoelectronics. The work presented in this thesis focuses on the improvement of a few… (more)

Husain, Muhammad Khaled

2009-01-01T23:59:59.000Z

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


421

E-Print Network 3.0 - algae mesh barrier Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

M Furnas... * and A Mitchell Soft-bottom benthic communities and processes in the Great Barrier Reef lagoon D Alongi (Paper Source: Marsh, Helene - School of Earth and...

422

Overcoming Persistent Barriers to Energy Efficiency in Multifamily Housing through Partnerships  

Broader source: Energy.gov [DOE]

This presentation, given through the DOE's Technical Assitance Program (TAP), provides information on Overcoming Persistent Barriers to Energy Efficiency in Multifamily Housing through Partnerships.

423

Hanford Site Long-term Surface Barrier Development Program: Fiscal year 1994 highlights  

SciTech Connect (OSTI)

The Hanford Site Surface Barrier Development Program was organized in 1985 to test the effectiveness of various barrier designs in minimizing the effects of water infiltration; plant, animal and human intrusion; and wind and water erosion on buried wastes, plus preventing or minimizing the emanation of noxious gases. A team of scientists from the Pacific Northwest Laboratory (PNL) and engineers from Westinghouse Hanford Company (WHC) direct the barrier development effort. ICF Kaiser Hanford Company, in conjunction with WHC and PNL, developed design drawings and construction specifications for a 5-acre prototype barrier. The highlight of efforts in FY 1994 was the construction of the prototype barrier. The prototype barrier was constructed on the Hanford Site at the 200 BP-1 Operable Unit of the 200 East Area. Construction was completed in August 1994 and monitoring instruments are being installed so experiments on the prototype barrier can begin in FY 1995. The purpose of the prototype barrier is to provide insights and experience with issues regarding barrier design, construction, and performance that have not been possible with individual tests and experiments conducted to date. Additional knowledge and experience was gained in FY 1994 on erosion control, physical stability, water infiltration control, model testing, Resource Conservation and Recovery Act (RCRA) comparisons, biointrusion control, long-term performance, and technology transfer.

Petersen, K.L.; Link, S.O.; Gee, G.W.

1995-08-01T23:59:59.000Z

424

The Facilitators of and Barriers to Adherence to Hypertension Treatment Scale  

E-Print Network [OSTI]

Ogedegbe G. Management of hypertension among patients withof un- controlled hypertension and antihypertensiveKim MT, et al. Barriers to hypertension care and control in

Fongwa, MN; Nandy, K; Yang, Q; Hays, RD

2014-01-01T23:59:59.000Z

425

Assessment of an active dry barrier for a landfill cover system  

SciTech Connect (OSTI)

A dry barrier is a layer of geologic material that is dried by air flow. An active dry barrier system can be designed, installed, and operated as part of a landfill cover system. An active system uses blowers and fans to move air through a high-permeability layer within the cover system. Depending principally on the air-flow rate, it is possible for a dry barrier to remove enough water to substantially reduce the likelihood of water percolating through the cover system. If a material with a relatively great storage capacity, such as processed tuff, is used as the coarse layer, then the efficiency of the dry barrier will be increased.

Stormont, J.C. [Sandia National Labs., Albuquerque, NM (United States); Ankeny, M.D.; Burkhard, M.E.; Tansey, M.K.; Kelsey, J.A. [Stephens (Daniel B.) and Associates, Inc., Albuquerque, NM (United States)

1994-03-01T23:59:59.000Z

426

Thermal Barrier Coatings Chemically and Mechanically Resistant to High Temperature Attack by Molten Ashes.  

E-Print Network [OSTI]

?? Thermal barrier coatings (TBCs) are ceramic coatings used on component in the hottest sections of gas turbine engines, used for power generation and aviation.… (more)

Gledhill, Andrew Dean

2011-01-01T23:59:59.000Z

427

E-Print Network 3.0 - allocation barrier concept Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Singapore Collection: Computer Technologies and Information Sciences 5 The Fuzzy Barrier: A Mechanism for High Speed Synchronization of Processors* Summary: the...

428

Method for applying a barrier layer to a silicon based substrate  

DOE Patents [OSTI]

A method for applying a barrier layer which comprises a barium-strontium aluminosilicate to a silicon containing substrate which inhibits the formation of cracks.

Eaton, Harry E. (Woodstock, CT); Lawton, Thomas H. (Wethersfield, CT)

2002-01-01T23:59:59.000Z

429

Method for applying a barrier layer to a silicon based substrate  

DOE Patents [OSTI]

A method for applying a barrier layer which comprises a barium-strontium aluminosilicate to a silicon containing substrate which inhibits the formation of cracks.

Eaton, Harry E. (Woodstock, CT); Lawton, Thomas H. (Wethersfield, CT)

2001-01-01T23:59:59.000Z

430

Guide to good practices for the design, development, and implementation of examinations  

SciTech Connect (OSTI)

The purpose of this Guide to Good Practices is to provide direction to training personnel in the broad areas of design, development, and implementation of examinations. Nuclear facilities spend a significant amount of training resources testing trainees. Tests are used for employee selection, qualification, requalification, certification and recertification, and promotion. Ineffective testing procedures, or inappropriate interpretation of test results, can have significant effects on both human performance and facility operations. Test development requires unique skills, and as with any skill, training and experience are needed to develop the skills. Test development, test use, test result interpretation, and test refinement, like all other aspects of the systematic approach to training, should be part of an ongoing, systematic process. For some users this document will provide a review of ideas and principles with which they are already familiar; for others it will present new concepts. While not intended to provide in-depth coverage of test theory design and development, it should provide developers, instructors, and evaluators with a foundation on which to develop sound examinations.

NONE

1997-06-01T23:59:59.000Z

431

ON-LINE THERMAL BARRIER COATING MONITORING FOR REAL-TIME FAILURE PROTECTION AND LIFE MAXIMIZATION  

SciTech Connect (OSTI)

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization,'' to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability availability maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can therefore accelerate the degradation of substrate components materials and eventually lead to a premature failure of critical component and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2002-04-01T23:59:59.000Z

432

On-Line Thermal Barrier Coating Monitoring for Real-Time Failure Protection and Life Maximization  

SciTech Connect (OSTI)

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Power Generation, Inc proposed a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization'', to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability availability maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can therefore accelerate the degradation of substrate components materials and eventually lead to a premature failure of critical component and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Power Generation, Inc. has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2005-10-01T23:59:59.000Z

433

ON-LINE THERMAL BARRIER COATING MONITORING FOR REAL-TIME FAILURE PROTECTION AND LIFE MAXIMIZATION  

SciTech Connect (OSTI)

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization,'' to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability, availability, and maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can, therefore, accelerate the degradation of substrate component materials and eventually lead to a premature failure of critical components and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2003-07-01T23:59:59.000Z

434

On-Line Thermal Barrier Coating Monitoring for Real-Time Failure Protection and Life Maximization  

SciTech Connect (OSTI)

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization'', to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability availability maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can therefore accelerate the degradation of substrate components materials and eventually lead to a premature failure of critical component and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2005-04-01T23:59:59.000Z

435

ON-LINE THERMAL BARRIER COATING MONITORING FOR REAL-TIME FAILURE PROTECTION AND LIFE MAXIMIZATION  

SciTech Connect (OSTI)

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization,'' to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability, availability, and maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can, therefore, accelerate the degradation of substrate component materials and eventually lead to a premature failure of critical components and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2003-10-01T23:59:59.000Z

436

Modeled Impacts of Cover Crops and Vegetative Barriers on Corn Stover Availability and Soil Quality  

SciTech Connect (OSTI)

Environmentally benign, economically viable, and socially acceptable agronomic strategies are needed to launch a sustainable lignocellulosic biofuel industry. Our objective was to demonstrate a landscape planning process that can ensure adequate supplies of corn (Zea mays L.) stover feedstock while protecting and improving soil quality. The Landscape Environmental Assessment Framework (LEAF) was used to develop land use strategies that were then scaled up for five U.S. Corn Belt states (Nebraska, Iowa, Illinois, Indiana, and Minnesota) to illustrate the impact that could be achieved. Our results show an annual sustainable stover supply of 194 million Mg without exceeding soil erosion T values or depleting soil organic carbon [i.e., soil conditioning index (SCI)?>?0] when no-till, winter cover crop, and vegetative barriers were incorporated into the landscape. A second, more rigorous conservation target was set to enhance soil quality while sustainably harvesting stover. By requiring erosion to be <1/2 T and the SCI-organic matter (OM) subfactor to be >?0, the annual sustainable quantity of harvestable stover dropped to148 million Mg. Examining removal rates by state and soil resource showed that soil capability class and slope generally determined the effectiveness of the three conservation practices and the resulting sustainable harvest rate. This emphasizes that sustainable biomass harvest must be based on subfield management decisions to ensure soil resources are conserved or enhanced, while providing sufficient biomass feedstock to support the economic growth of bioenergy enterprises.

Ian J. Bonner; David J. Muth Jr.; Joshua B. Koch; Douglas L. Karlen

2014-06-01T23:59:59.000Z

437

Microstructure of Josephson junctions: Effect on supercurrent transport in YBCO grain boundary and barrier layer junctions  

SciTech Connect (OSTI)

The electric transport of high-temperature superconductors, such as YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} (YBCO), can be strongly restricted by the presence of high-angle grain boundaries (GB). This weak-link behavior is governed by the macroscopic GB geometry and the microscopic grain boundary structure and composition at the atomic level. Whereas grain boundaries present a considerable impediment to high current applications of high T{sub c} materials, there is considerable commercial interest in exploiting the weak-link-nature of grain boundaries for the design of microelectronic devices, such as superconducting quantum interference devices (SQUIDs). The Josephson junctions which form the basis of this technology can also be formed by introducing artificial barriers into the superconductor. The authors have examined both types of Josephson junctions by EM techniques in an effort to understand the connection between microstructure/chemistry and electrical transport properties. This knowledge is a valuable resource for the design and production of improved devices.

Merkle, K.L.; Huang, Y.

1998-01-01T23:59:59.000Z

438

Non-Power Reactor Operator Licensing Examiner Standards. Revision 1  

SciTech Connect (OSTI)

The Non-Power Reactor Operator Licensing Examiner Standards provide policy and guidance to NRC examiners and establish the procedures and practices for examining and licensing of applicants for NRC operator licenses pursuant to Part 55 of Title 10 of the Code of Federal Regulations (10 CFR 55). They are intended to assist NRC examiners and facility licensees to understand the examination process better and to provide for equitable and consistent administration of examinations to all applicants by NRC examiners. These standards are not a substitute for the operator licensing regulations and are subject to revision or other internal operator examination licensing policy changes. As appropriate, these standards will be revised periodically to accommodate comments and reflect new information or experience.

NONE

1995-06-01T23:59:59.000Z

439

Pressure test data reveal reservoir barriers/faults  

SciTech Connect (OSTI)

A review of transient pressure test data from an oil reservoir in Libya indicated not only the suspected fault barriers, but also the non-sealing portions of the faults. Extensive seismic data indicated much faulting, and directional trends had been interpreted to be generally northwest-southeast. The reservoir is a heterogeneous dolomite with average permeability of 40 to 50 md and contains neither natural fractures not stratification. Vertical displacement (throw) of each fault block is indicated to be within the range of the dolomite thickness, i.e., 40 to 180 ft. Therefore, when the fault throw is greater than reservoir thickness there is sealing, and when the throw is less than reservoir thickness the faults are non-sealing.

Hurd, J.D.

1984-07-30T23:59:59.000Z

440

Ceramic thermal barrier coating for rapid thermal cycling applications  

DOE Patents [OSTI]

A thermal barrier coating for metal articles subjected to rapid thermal cycling includes a metallic bond coat deposited on the metal article, at least one MCrAlY/ceramic layer deposited on the bond coat, and a ceramic top layer deposited on the MCrAlY/ceramic layer. The M in the MCrAlY material is Fe, Ni, Co, or a mixture of Ni and Co. The ceramic in the MCrAlY/ceramic layer is mullite or Al.sub.2 O.sub.3. The ceramic top layer includes a ceramic with a coefficient of thermal expansion less than about 5.4.times.10.sup.-6 .degree.C.sup.-1 and a thermal conductivity between about 1 J sec.sup.-1 m.sup.-1 .degree.C.sup.-1 and about 1.7 J sec.sup.-1 m.sup.-1 .degree.C.sup.-1.

Scharman, Alan J. (Hebron, CT); Yonushonis, Thomas M. (Columbus, IN)

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ideas examine barriers" 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

Silicon carbide tritium permeation barrier for steel structural components.  

SciTech Connect (OSTI)

Chemical vapor deposited (CVD) silicon carbide (SiC) has superior resistance to tritium permeation even after irradiation. Prior work has shown Ultrametfoam to be forgiving when bonded to substrates with large CTE differences. The technical objectives are: (1) Evaluate foams of vanadium, niobium and molybdenum metals and SiC for CTE mitigation between a dense SiC barrier and steel structure; (2) Thermostructural modeling of SiC TPB/Ultramet foam/ferritic steel architecture; (3) Evaluate deuterium permeation of chemical vapor deposited (CVD) SiC; (4) D testing involved construction of a new higher temperature (> 1000 C) permeation testing system and development of improved sealing techniques; (5) Fabricate prototype tube similar to that shown with dimensions of 7cm {theta} and 35cm long; and (6) Tritium and hermeticity testing of prototype tube.

Causey, Rion A. (Sandia National Laboratories, Livermore, CA); Garde, Joseph Maurico; Buchenauer, Dean A. (Sandia National Laboratories, Livermore, CA); Calderoni, Pattrick (Idaho National Laboratory); Holschuh, Thomas, Jr.; Youchison, Dennis Lee; Wright, Matt; Kolasinski, Robert D. (Sandia National Laboratories, Livermore, CA)

2010-09-01T23:59:59.000Z

442

Cementitious Barriers Partnership FY2013 End-Year Report  

SciTech Connect (OSTI)

In FY2013, the Cementitious Barriers Partnership (CBP) demonstrated continued tangible progress toward fulfilling the objective of developing a set of software tools to improve understanding and prediction of the long?term structural, hydraulic and chemical performance of cementitious barriers used in nuclear applications. In November 2012, the CBP released “Version 1.0” of the CBP Software Toolbox, a suite of software for simulating reactive transport in cementitious materials and important degradation phenomena. In addition, the CBP completed development of new software for the “Version 2.0” Toolbox to be released in early FY2014 and demonstrated use of the Version 1.0 Toolbox on DOE applications. The current primary software components in both Versions 1.0 and 2.0 are LeachXS/ORCHESTRA, STADIUM, and a GoldSim interface for probabilistic analysis of selected degradation scenarios. The CBP Software Toolbox Version 1.0 supports analysis of external sulfate attack (including damage mechanics), carbonation, and primary constituent leaching. Version 2.0 includes the additional analysis of chloride attack and dual regime flow and contaminant migration in fractured and non?fractured cementitious material. The LeachXS component embodies an extensive material property measurements database along with chemical speciation and reactive mass transport simulation cases with emphasis on leaching of major, trace and radionuclide constituents from cementitious materials used in DOE facilities, such as Saltstone (Savannah River) and Cast Stone (Hanford), tank closure grouts, and barrier concretes. STADIUM focuses on the physical and structural service life of materials and components based on chemical speciation and reactive mass transport of major cement constituents and aggressive species (e.g., chloride, sulfate, etc.). THAMES is a planned future CBP Toolbox component focused on simulation of the microstructure of cementitious materials and calculation of resultant hydraulic and constituent mass transfer parameters needed in modeling. Two CBP software demonstrations were conducted in FY2013, one to support the Saltstone Disposal Facility (SDF) at SRS and the other on a representative Hanford high?level waste tank. The CBP Toolbox demonstration on the SDF provided analysis on the most probable degradation mechanisms to the cementitious vault enclosure caused by sulfate and carbonation ingress. This analysis was documented and resulted in the issuance of a SDF Performance Assessment Special Analysis by Liquid Waste Operations this fiscal year. The two new software tools supporting chloride attack and dual?regime flow will provide additional degradation tools to better evaluate performance of DOE and commercial cementitious barriers. The CBP SRNL experimental program produced two patent applications and field data that will be used in the development and calibration of CBP software tools being developed in FY2014. The CBP software and simulation tools varies from other efforts in that all the tools are based upon specific and relevant experimental research of cementitious materials utilized in DOE applications. The CBP FY2013 program involved continuing research to improve and enhance the simulation tools as well as developing new tools that model other key degradation phenomena not addressed in Version 1.0. Also efforts to continue to verify the various simulation tools through laboratory experiments and analysis of field specimens are ongoing and will continue into FY2014 to quantify and reduce the uncertainty associated with performance assessments. This end?year report summarizes FY2013 software development efforts and the various experimental programs that are providing data for calibration and validation of the CBP developed software.

Flach, G. P. [Savannah River Site (SRS), Aiken, SC (United States); Langton, C. A. [Savannah River Site (SRS), Aiken, SC (United States); Burns, H. H. [Savannah River Site (SRS), Aiken, SC (United States); Smith, F. G. [Savannah River Site (SRS), Aiken, SC (United States); Kosson, D. S. [Vanderbilt University, School of Engineering, Nashville, TN (United States); Brown, K. G. [Vanderbilt University, School of Engineering, Nashville, TN (United States); Samson, E. [SIMCO Technologies, Inc., Quebec (Canada); Meeussen, J. C.L. [Nuclear Research and Consultancy Group (NRG), Petten (The Netherlands); van der Sloot, H. A. [Hans van der Sloot Consultancy, Langedijk (The Netherlands); Garboczi, E. J. [Materials & Construction Research Division, National Institute of Standards and Technology, Gaithersburg, MD (United States)

2013-11-01T23:59:59.000Z

443

New! Building Energy Standards Essentials for Plans Examiners & Building Inspectors  

E-Print Network [OSTI]

New! Building Energy Standards Essentials for Plans Examiners & Building Inspectors Building energy codes are complex. Plans examiners and building inspectors are expected to understand and enforce energy savings. This new, hands-on course strives to provide plans examiners and building inspectors

444

A Survey of Computer Methods in Forensic Handwritten Document Examination  

E-Print Network [OSTI]

1 A Survey of Computer Methods in Forensic Handwritten Document Examination Sargur SRIHARI Graham LEEDHAM Abstract Forensic document examination is at a cross-roads due to challenges posed to its recent efforts in the areas of establishing a scientific basis of forensic handwriting examination

445

Advanced hydraulic fracturing methods to create in situ reactive barriers  

SciTech Connect (OSTI)

Many contaminated areas consist of a source area and a plume. In the source area, the contaminant moves vertically downward from a release point through the vadose zone to an underlying saturated region. Where contaminants are organic liquids, NAPL may accumulate on the water table, or it may continue to migrate downward through the saturated region. Early developments of permeable barrier technology have focused on intercepting horizontally moving plumes with vertical structures, such as trenches, filled with reactive material capable of immobilizing or degrading dissolved contaminants. This focus resulted in part from a need to economically treat the potentially large volumes of contaminated water in a plume, and in part from the availability of construction technology to create the vertical structures that could house reactive compounds. Contaminant source areas, however, have thus far remained largely excluded from the application of permeable barrier technology. One reason for this is the lack of conventional construction methods for creating suitable horizontal structures that would place reactive materials in the path of downward-moving contaminants. Methods of hydraulic fracturing have been widely used to create flat-lying to gently dipping layers of granular material in unconsolidated sediments. Most applications thus far have involved filling fractures with coarse-grained sand to create permeable layers that will increase the discharge of wells recovering contaminated water or vapor. However, it is possible to fill fractures with other compounds that alter the chemical composition of the subsurface. One early application involved development and field testing micro-encapsulated sodium percarbonate, a solid compound that releases oxygen and can create aerobic conditions suitable for biodegradation in the subsurface for several months.

Murdoch, L. [FRx Inc., Cincinnati, OH (United States); [Clemson Univ., SC (United States); Siegrist, B. [Oak Ridge National Lab., TN (United States); Vesper, S. [Univ. of Cincinnati, OH (United States)] [and others

1997-12-31T23:59:59.000Z

446

Hydraulic barrier design and applicability for managing the risk of CO2 leakage from deep saline  

E-Print Network [OSTI]

Hydraulic barrier design and applicability for managing the risk of CO2 leakage from deep saline modifying the leak hydraulic properties (e.g. permeability) may be unfeasible. An appealing option.e. by creating a hydraulic barrier. The present article presents and discusses the operational and strategic

Paris-Sud XI, Université de

447

Electron transport measurements of Schottky barrier inhomogeneities L. E. Calvet,a)  

E-Print Network [OSTI]

of metal silicide contacts instead of p­n junctions. SBMOSFETs have been proposed as an alternative metal­oxide­semiconductor field-effect transistors. Direct tunneling through the Schottky barrier metal/semiconductor contact area. The inhomogeneities result in different average Schottky barrier

Reed, Mark

448

Wax barrier for use with in situ processes for treating formations  

DOE Patents [OSTI]

Methods for forming a barrier around at least a portion of a treatment area in a subsurface formation are described herein. A material including wax may be introduced into one or more wellbores. The material introduced into two or more wells may mix in the formation and congeal to form a barrier to fluid flow.

Vinegar, Harold J.; Carter, Ernest E.; Son, Jaime Santos; Bai, Taixu; Khoda Verdian, Mohamad Fereydoon

2010-04-27T23:59:59.000Z

449

Sub-barrier capture reactions with $^{16,18}$O and $^{40,48}$Ca beams  

E-Print Network [OSTI]

Various sub-barrier capture reactions with beams $^{16,18}$O and $^{40,48}$Ca are treated within the quantum diffusion approach. The role of neutron transfer in these capture reactions is discussed. The quasielastic and capture barrier distributions are analyzed and compared with the recent experimental data.

V. V. Sargsyan; G. G. Adamian; N. V. Antonenko; W. Scheid; H. Q. Zhang

2013-04-22T23:59:59.000Z

450

Lifetime Assessment for Thermal Barrier Coatings: Tests for Measuring Mixed Mode Delamination Toughness  

E-Print Network [OSTI]

the thermally grown oxide (TGO), and a porous ceramic topcoat which serves as the thermal insulation. DetailsLifetime Assessment for Thermal Barrier Coatings: Tests for Measuring Mixed Mode Delamination Mechanisms leading to degradation of the adherence of thermal barrier coatings (TBC) used in aircraft

Hutchinson, John W.

451

Grain-Boundary Grooving of Plasma-Sprayed Yttria-Stabilized Zirconia Thermal Barrier Coatings  

E-Print Network [OSTI]

Grain-Boundary Grooving of Plasma-Sprayed Yttria-Stabilized Zirconia Thermal Barrier Coatings Engineering, West Lafayette, Indiana 47907 The focus of this study was to determine the mechanisms re- sponsible for the microstructural changes of plasma-sprayed 7 wt% Y2O3­ZrO2 thermal barrier coatings

Trice, Rodney W.

452

TLSync: Support for Multiple Fast Barriers Using On-Chip Transmission Lines  

E-Print Network [OSTI]

TLSync: Support for Multiple Fast Barriers Using On-Chip Transmission Lines Jungju Oh jungju in a transmission-line broadcast network, thus leaving the transmission line network free for non-modulated (base--Interconnection architectures General Terms Design, Performance Keywords Multi-core, Synchronization, Barrier, Transmission Line

Prvulovic, Milos

453

NHMFL Breaks the 100 Tesla Barrier Gregory S. Boebinger, National High Magnetic Field Laboratory  

E-Print Network [OSTI]

NHMFL Breaks the 100 Tesla Barrier Gregory S. Boebinger, National High Magnetic Field Laboratory. 109no. 31 12404-12407 On March 22nd 2012, the NHMFL ­ Pulsed Field Facility broke the 100T tesla barrier, setting a world record of 100.75 tesla for a non-destructive magnet. By using advanced

Weston, Ken

454

Impacts from Deployment Barriers on the United States Wind Power Industry: Overview & Preliminary Findings (Presentation)  

SciTech Connect (OSTI)

Regardless of cost and performance some wind projects are unable to proceed to commissioning as a result of deployment barriers. Principal deployment barriers in the industry today include: wildlife, public acceptance, access to transmission, and radar. To date, methods for understanding these non-technical barriers have failed to accurately characterize the costs imposed by deployment barriers and the degree of impact to the industry. Analytical challenges include limited data and modeling capabilities. Changes in policy and regulation, among other factors, also add complexity to analysis of impacts from deployment barriers. This presentation details preliminary results from new NREL analysis focused on quantifying the impact of deployment barriers on the wind resource of the United States, the installed cost of wind projects, and the total electric power system cost of a 20% wind energy future. In terms of impacts to wind project costs and developable land, preliminary findings suggest that deployment barriers are secondary to market drivers such as demand. Nevertheless, impacts to wind project costs are on the order of $100/kW and a substantial share of the potentially developable windy land in the United States is indeed affected by deployment barriers.

Lantz, E.; Tegen, S.; Hand, M.; Heimiller, D.

2012-09-01T23:59:59.000Z

455

Deposition of WNxCy thin films for diffusion barrier application using the dimethylhydrazido (2-  

E-Print Network [OSTI]

thickness to the barrier scheme as well as an additional processing step. Binary transition metal compounds 13 April 2009 Available online xxxx Keywords: Chemical vapor deposition Metallization Tungsten nitride carbide Diffusion barrier X-ray diffraction Auger electron spectroscopy Tungsten nitride carbide

Anderson, Timothy J.

456

Distributed Porosity as a Control Parameter for Oxide Thermal Barriers Made by Physical Vapor Deposition  

E-Print Network [OSTI]

Anthony G. Evans* Materials Institute, Princeton University, Princeton, New Jersey 08544 Thermal barrier and generating new thermal resistance solutions, as appropri- ate. A continuum heat flow analysis is usedDistributed Porosity as a Control Parameter for Oxide Thermal Barriers Made by Physical Vapor

Wadley, Haydn

457

ATOMIC-LEVEL PROPERTIES OF THERMAL BARRIER CHARACTERIZATION OF METAL-CERAMIC INTERFRACES  

E-Print Network [OSTI]

engines. These TBC's are comprised of ceramics, with favorably low thermal conductivity, deposited years ago.2 Hence, engineers looked to ceramic materials as a means of providing a thermal barrierChapter 1 ATOMIC-LEVEL PROPERTIES OF THERMAL BARRIER COATINGS : CHARACTERIZATION OF METAL

Carter, Emily A.

458

Institutionnal dynamics and barriers to sustainable construction in France, the United Kingdom and the  

E-Print Network [OSTI]

resources in sustainable urban design and sustainable building design. In Britain, a broader agenda has beenInstitutionnal dynamics and barriers to sustainable construction in France, the United Kingdom). Institutionnal dynamics and barriers to sustainable construction in France, the United Kingdom

Paris-Sud XI, Université de

459

Hanford Site Permanent Isolation Surface Barrier Development Program: Fiscal year 1992 and 1993 highlights  

SciTech Connect (OSTI)

The Hanford Site Permanent Isolation Surface Barrier Development Program was jointly developed by the Pacific Northwest Laboratory and Westinghouse Hanford Company to design and test an earthen cover system that can be used to inhibit water infiltration; plant, animal, and human intrusion; and wind and water erosion. Kaiser Engineers Hanford Company provided engineering design support for the program. Work on barrier design has been under way at Hanford for nearly 10 years. The comprehensive development of a long-term barrier, formerly the Hanford Site Protective Barrier Development Program, was initiated in FY 1986, and a general field-tested design is expected to be completed by FY 1998. Highlights of efforts in FY 1992 and FY 1993 included the resumption of field testing, the completion of the prototype barrier design, and the convening of an external peer review panel, which met twice with the barrier development team. The review panel provided helpful guidance on current and future barrier development activities, while commending the program for its significant technical contributions to innovative barrier technology development.

Cadwell, L.L.; Link, S.O.; Gee, G.W. [eds.

1993-09-01T23:59:59.000Z

460

Removal of Barriers to the Use of Renewable Energy Sources for Rural Electrification in Chile  

E-Print Network [OSTI]

in Latin America, a series of interviews with different agents involved in the rural electrificationRemoval of Barriers to the Use of Renewable Energy Sources for Rural Electrification in Chile Forcano 2 Removal of Barriers to the Use of Renewable Energy Sources for Rural Electrification in Chile

Catholic University of Chile (Universidad CatĂłlica de Chile)

Note: This page contains sample records for the topic "ideas examine barriers" 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.


461

Barrier properties of PE, PP and EVA (nano)composites - The influence of filler type and concentration  

SciTech Connect (OSTI)

Nanocomposite materials with layered clay used as nanofiller and polyethylene (PE), polypropylene (PP) and copolymer ethylene and vinyl acetate matrix (EVA, the content of VA component 19 wt. %) were prepared by compounding the individual components in Brabender kneader. The MMT Na+ and four types of commercial products such as Nanofil N 5 and N3000, Cloisite 93A and 30B were used as nanofillers. Next to the clays microprecipitated CaHCO{sub 3}, nanosilica and Halloysite tubes were used. The quantity of all the above-mentioned (nano)fillers was 1, 3 and 5 wt. % in relation to the content of montmorillonite. The aim was to evaluate the influence of (nano)filler type and concentration on nanocomposite barrier properties. The morphology of nanocomposite samples was examined by means of XRD analysis illustrated by transmission electronic microscopy TEM. Furthermore, permeability for O{sub 2} and CO{sub 2} were observed.

Merinska, D.; Kalendova, A. [Department of Polymer Engineering, Faculty of Technology, Tomas Bata University in Zlin, Nam. T. G. Masaryka 275, 762 72 Zlin, Czech Republic and Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Nad Ovcirnou 3685, 760 0 (Czech Republic); Tesarikova, A. [Department of Polymer Engineering, Faculty of Technology, Tomas Bata University in Zlin, Nam. T. G. Masaryka 275, 762 72 Zlin (Czech Republic)

2014-05-15T23:59:59.000Z

462

Flexible barrier film, method of forming same, and organic electronic device including same  

DOE Patents [OSTI]

A flexible barrier film has a thickness of from greater than zero to less than 5,000 nanometers and a water vapor transmission rate of no more than 1.times.10.sup.-2 g/m.sup.2/day at 22.degree. C. and 47% relative humidity. The flexible barrier film is formed from a composition, which comprises a multi-functional acrylate. The composition further comprises the reaction product of an alkoxy-functional organometallic compound and an alkoxy-functional organosilicon compound. A method of forming the flexible barrier film includes the steps of disposing the composition on a substrate and curing the composition to form the flexible barrier film. The flexible barrier film may be utilized in organic electronic devices.

Blizzard, John; Tonge, James Steven; Weidner, William Kenneth

2013-03-26T23:59:59.000Z

463

High-order accurate implicit methods for the pricing of barrier options  

E-Print Network [OSTI]

This paper deals with a high-order accurate implicit finite-difference approach to the pricing of barrier options. In this way various types of barrier options are priced, including barrier options paying rebates, and options on dividend-paying-stocks. Moreover, the barriers may be monitored either continuously or discretely. In addition to the high-order accuracy of the scheme, and the stretching effect of the coordinate transformation, the main feature of this approach lies on a probability-based optimal determination of boundary conditions. This leads to much faster and accurate results when compared with similar pricing approaches. The strength of the present scheme is particularly demonstrated in the valuation of discretely monitored barrier options where it yields values closest to those obtained from the only semi-analytical valuation method available.

Ndogmo, J C

2007-01-01T23:59:59.000Z

464

Subterranean barriers, methods, and apparatuses for forming, inspecting, selectively heating, and repairing same  

DOE Patents [OSTI]

A subterranean barrier and method for forming same are disclosed, the barrier including a plurality of casing strings wherein at least one casing string of the plurality of casing strings may be affixed to at least another adjacent casing string of the plurality of casing strings through at least one weld, at least one adhesive joint, or both. A method and system for nondestructively inspecting a subterranean barrier is disclosed. For instance, a radiographic signal may be emitted from within a casing string toward an adjacent casing string and the radiographic signal may be detected from within the adjacent casing string. A method of repairing a barrier including removing at least a portion of a casing string and welding a repair element within the casing string is disclosed. A method of selectively heating at least one casing string forming at least a portion of a subterranean barrier is disclosed.

Nickelson, Reva A. (Shelley, ID); Sloan, Paul A. (Rigby, ID); Richardson, John G. (Idaho Falls, ID); Walsh, Stephanie (Idaho Falls, ID); Kostelnik, Kevin M. (Idaho, ID)

2009-04-07T23:59:59.000Z

465

Fusion of $^{6}$Li with $^{159}$Tb} at near barrier energies  

E-Print Network [OSTI]

Complete and incomplete fusion cross sections for $^{6}$Li+$^{159}$Tb have been measured at energies around the Coulomb barrier by the $\\gamma$-ray method. The measurements show that the complete fusion cross sections at above-barrier energies are suppressed by $\\sim$34% compared to the coupled channels calculations. A comparison of the complete fusion cross sections at above-barrier energies with the existing data of $^{11,10}$B+$^{159}$Tb and $^{7}$Li+$^{159}$Tb shows that the extent of suppression is correlated with the $\\alpha$-separation energies of the projectiles. It has been argued that the Dy isotopes produced in the reaction $^{6}$Li+$^{159}$Tb, at below-barrier energies are primarily due to the $d$-transfer to unbound states of $^{159}$Tb, while both transfer and incomplete fusion processes contribute at above-barrier energies.

M. K. Pradhan; A. Mukherjee; P. Basu; A. Goswami; R. Kshetri; R. Palit; V. V. Parkar; M. Ray; Subinit Roy; P. Roy Chowdhury; M. Saha Sarkar; S. Santra

2011-06-10T23:59:59.000Z

466

Fusion of {sup 6}Li with {sup 159}Tb at near-barrier energies  

SciTech Connect (OSTI)

Complete and incomplete fusion cross sections for {sup 6}Li + {sup 159}Tb have been measured at energies around the Coulomb barrier by the {gamma}-ray method. The measurements show that the complete fusion cross sections at above-barrier energies are suppressed by {approx}34% compared to coupled-channel calculations. A comparison of the complete fusion cross sections at above-barrier energies with the existing data for {sup 11,10}B + {sup 159}Tb and {sup 7}Li + {sup 159}Tb shows that the extent of suppression is correlated with the {alpha} separation energies of the projectiles. It has been argued that the Dy isotopes produced in the reaction {sup 6}Li + {sup 159}Tb at below-barrier energies are primarily due to the d transfer to unbound states of {sup 159}Tb, while both transfer and incomplete fusion processes contribute at above-barrier energies.

Pradhan, M. K.; Mukherjee, A.; Basu, P.; Goswami, A.; Kshetri, R.; Roy, Subinit; Chowdhury, P. Roy; Sarkar, M. Saha; Palit, R.; Parkar, V. V.; Santra, S.; Ray, M. [Nuclear Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata-700064 (India); Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai-400005 (India); Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai-400085 (India); Department of Physics, Behala College, Parnasree, Kolkata-700060 (India)

2011-06-15T23:59:59.000Z

467

Large-scale fabrication of BN tunnel barriers for graphene spintronics  

SciTech Connect (OSTI)

We have fabricated graphene spin-valve devices utilizing scalable materials made from chemical vapor deposition (CVD). Both the spin-transporting graphene and the tunnel barrier material are CVD-grown. The tunnel barrier is realized by Hexagonal boron nitride, used either as a monolayer or bilayer and placed over the graphene. Spin transport experiments were performed using ferromagnetic contacts deposited onto the barrier. We find that spin injection is still greatly suppressed in devices with a monolayer tunneling barrier due to resistance mismatch. This is, however, not the case for devices with bilayer barriers. For those devices, a spin relaxation time of ?260 ps intrinsic to the CVD graphene material is deduced. This time scale is comparable to those reported for exfoliated graphene, suggesting that this CVD approach is promising for spintronic applications which require scalable materials.

Fu, Wangyang; Makk, Péter; Maurand, Romain; Bräuninger, Matthias; Schönenberger, Christian [Department of Physics, University of Basel, Basel (Switzerland)

2014-08-21T23:59:59.000Z

468

Market and policy barriers to energy storage deployment : a study for the energy storage systems program.  

SciTech Connect (OSTI)

Electric energy storage technologies have recently been in the spotlight, discussed as essential grid assets that can provide services to increase the reliability and resiliency of the grid, including furthering the integration of variable renewable energy resources. Though they can provide numerous grid services, there are a number of factors that restrict their current deployment. The most significant barrier to deployment is high capital costs, though several recent deployments indicate that capital costs are decreasing and energy storage may be the preferred economic alternative in certain situations. However, a number of other market and regulatory barriers persist, limiting further deployment. These barriers can be categorized into regulatory barriers, market (economic) barriers, utility and developer business model barriers, crosscutting barriers and technology barriers. This report, through interviews with stakeholders and review of regulatory filings in four regions roughly representative of the United States, identifies the key barriers restricting further energy storage development in the country. The report also includes a discussion of possible solutions to address these barriers and a review of initiatives around the country at the federal, regional and state levels that are addressing some of these issues. Energy storage could have a key role to play in the future grid, but market and regulatory issues have to be addressed to allow storage resources open market access and compensation for the services they are capable of providing. Progress has been made in this effort, but much remains to be done and will require continued engagement from regulators, policy makers, market operators, utilities, developers and manufacturers.

Bhatnagar, Dhruv; Currier, Aileen B.; Hernandez, Jacquelynne; Ma, Ookie [U.S. Department of Energy, Washington, D.C.; Kirby, Brendan [U.S. Department of Energy, Washington, D.C.

2013-09-01T23:59:59.000Z

469

Technical benefits and cultural barriers of networked Autonomous Undersea Vehicles  

E-Print Network [OSTI]

The research presented in this thesis examines the technical benefits to using a collaborative network of Autonomous Undersea Vehicles (AUVs) in place of individual vehicles. Benefits could be achieved in the areas of ...

Wineman, Patrick L

2013-01-01T23:59:59.000Z

470

Radiation effects on the blood-brain barrier  

E-Print Network [OSTI]

Selective vascular irradiation enables the critical examination of the vasculature and its role in the onset of late radiation effects. It is a novel approach to expose the endothelial cells to much higher levels of ionizing ...

Raabe, Rebecca L

2007-01-01T23:59:59.000Z

471

Enter Search Term Enter Drill Deeper or ED Online ID Home Subscribe Back Issues Design FAQs Ideas for Design Power Analog  

E-Print Network [OSTI]

Enter Search Term Enter Drill Deeper or ED Online ID Home Subscribe Back Issues Design FAQs Ideas Subscribe to Electronic Design UPDATE (Archive) Email: Enter Email Click to view this week's welcome screen

Rogers, John A.

472

Abstract --A company uses several watch types for different needs. The main idea is to offer a generic watch system that  

E-Print Network [OSTI]

into the company life, actors are in search of the effective manner to manage, store, disseminate and seekAbstract -- A company uses several watch types for different needs. The main idea is to offer

Paris-Sud XI, Université de

473

Thick Thermal Barrier Coatings (TTBCs) for Low Emission, High Efficiency Diesel Engine Components  

SciTech Connect (OSTI)

The objective of this program was to advance the fundamental understanding of thick thermal barrier coating (TTBC) systems for application to low heat rejection diesel engine combustion chambers. Previous reviews of thermal barrier coating technology concluded that the current level of understanding of coating system behavior is inadequate and the lack of fundamental understanding may impede the application of thermal barrier coating to diesel engines.(1) Areas of TTBC technology examined in this program include powder characteristics and chemistry; bond coating composition, coating design, microstructure and thickness as they affect properties, durability, and reliability; and TTBC "aging" effects (microstructural and property changes) under diesel engine operating conditions. Fifteen TTBC ceramic powders were evaluated. These powders were selected to investigate the effects of different chemistries, different manufacturing methods, lot-to-lot variations, different suppliers and varying impurity levels. Each of the fifteen materials has been sprayed using 36 parameters selected by a design of experiments (DOE) to determine the effects of primary gas (Ar and N2), primary gas flow rate, voltage, arc current, powder feed rate, carrier gas flow rate, and spraying distance. The deposition efficiency, density, and thermal conductivity of the resulting coatings were measured. A coating with a high deposition efficiency and low thermal conductivity is desired from an economic standpoint. An optimum combination of thermal conductivity and disposition efficiency was found for each lot of powder in follow-on experiments and disposition parameters were chosen for full characterization.(2) Strengths of the optimized coatings were determined using 4-point bending specimens. The tensile strength was determined using free-standing coatings made by spraying onto mild steel substrates which were subsequently removed by chemical etching. The compressive strengths of the coatings were determined using composite specimens of ceramic coated onto stainless steel substrates, tested with the coating in compression and the steel in tension. The strength of the coating was determined from an elastic bi-material analysis of the resulting failure of the coating in compression.(3) Altough initial comparisons of the materials would appear to be straight forward from these results, the results of the aging tests of the materials are necessary to insure that trends in properties remain after long term exposure to a diesel environment. Some comparisons can be made, such as the comparison between for lot-to-lot variation. An axial fatigue test to determine the high cycle fatigue behavior of TTBCs was developed at the University of Illinois under funding from this program.(4) A fatigue test apparatus has been designed and initial work performed which demonstrates the ability to provide a routine method of axial testing of coating. The test fixture replaces the normal load frame and fixtures used to transmit the hydraulic oil loading to the sample with the TTBC specimen itself. The TTBC specimen is a composite metal/coating with stainless steel ends. The coating is sprayed onto a mild steel center tube section onto which the stainless steel ends are press fit. The specimen is then machined. After machining, the specimen is placed in an acid bath which etches the mild steel away leaving the TTBC attached to the the stainless steel ends. Plugs are then installed in the ends and the composite specimen loaded in the test fixture where the hydraulic oil pressurizes each end to apply the load. Since oil transmits the load, bending loads are minimized. This test fixture has been modified to allow piston ends to be attached to the specimen which allows tensile loading as well as compressive loading of the specimen. In addition to the room temperature data, specimens have been tested at 800 Degrees C with the surprising result that at high temperature, the TTBC exhibits much higher fatigue strength. Testing of the TTBC using tension/compression cycling has been con

M. Brad Beardsley, Caterpillar Inc.; Dr. Darrell Socie, University of Illinois; Dr. Ed Redja, University of Illinois; Dr. Christopher Berndt, State University of New York at Stony Brook

2006-03-02T23:59:59.000Z

474

1.0 What is Statistics? 1.1 What is Mathematical Statistics? Random Data Basic Ideas in Statistics 1.2 Fundamental Con Mathematical Statistics  

E-Print Network [OSTI]

§1.0 What is Statistics? §1.1 What is Mathematical Statistics? Random Data Basic Ideas in Statistics §1.2 Fundamental Con Mathematical Statistics Zhang, Lixin and Dai, Jialing Course Website: www.math.zju.edu.cn/zlx/teaching.htm #12;§1.0 What is Statistics? §1.1 What is Mathematical Statistics? Random Data Basic Ideas

Zhang, Li-Xin

475

CEMENTITIOUS BARRIERS PARTNERSHIP FY13 MID-YEAR REPORT  

SciTech Connect (OSTI)

In FY2013, the Cementitious Barriers Partnership (CBP) is continuing in its effort to develop and enhance software tools demonstrating tangible progress toward fulfilling the objective of developing a set of tools to improve understanding and prediction of the long?term structural, hydraulic and chemical performance of cementitious barriers used in nuclear applications. In FY2012, the CBP released the initial inhouse “Beta?version” of the CBP Software Toolbox, a suite of software for simulating reactive transport in cementitious materials and important degradation phenomena. The current primary software components are LeachXS/ORCHESTRA, STADIUM, and a GoldSim interface for probabilistic analysis of selected degradation scenarios. THAMES is a planned future CBP Toolbox component (FY13/14) focused on simulation of the microstructure of cementitious materials and calculation of resultant hydraulic and constituent mass transfer parameters needed in modeling. This past November, the CBP Software Toolbox Version 1.0 was released that supports analysis of external sulfate attack (including damage mechanics), carbonation, and primary constituent leaching. The LeachXS component embodies an extensive material property measurements database along with chemical speciation and reactive mass transport simulation cases with emphasis on leaching of major, trace and radionuclide constituents from cementitious materials used in DOE facilities, such as Saltstone (Savannah River) and Cast Stone (Hanford), tank closure grouts, and barrier concretes. STADIUM focuses on the physical and structural service life of materials and components based on chemical speciation and reactive mass transport of major cement constituents and aggressive species (e.g., chloride, sulfate, etc.). The CBP issued numerous reports and other documentation that accompanied the “Version 1.0” release including a CBP Software Toolbox User Guide and Installation Guide. These documents, as well as, the presentations from the CBP Software Toolbox Demonstration and User Workshop, which are briefly described below, can be accessed from the CBP webpage at http://cementbarriers.org/. The website was recently modified to describe the CBP Software Toolbox and includes an interest form for application to use the software. The CBP FY13 program is continuing research to improve and enhance the simulation tools as well as develop new tools that model other key degradation phenomena not addressed in Version 1.0. Also efforts to continue to verify the various simulation tools thru laboratory experiments and analysis of field specimens are ongoing to quantify and reduce the uncertainty associated with performance assessments are ongoing. This mid?year report also includes both a summary on the FY13 software accomplishments in addition to the release of Version 1.0 of the CBP Software Toolbox and the various experimental programs that are providing data for calibration and validation of the CBP developed software. The focus this year for experimental studies was to measure transport in cementitious material by utilization of a leaching method and reduction capacity of saltstone field samples. Results are being used to calibrate and validate the updated carbonation model.

Burns, H.; Flach, G.; Langton, C.; KOSSON, D.; BROWN, K.; SAMSON, E.; MEEUSSEN, J.; SLOOT, H.; GARBOCZI, E.

2013-05-01T23:59:59.000Z

476

Final Report- Rejuvenating Permeable Reactive Barriers by Chemical Flushing, U.S. Environmental Protection Agency Region 8 Support  

Broader source: Energy.gov [DOE]

Final Report - Rejuvenating Permeable Reactive Barriers by Chemical Flushing, U.S. Environmental Protection Agency Region 8 Support

477

Examining Hysteresis in Lithium- and Manganese-Rich Composite...  

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

Hysteresis in Lithium- and Manganese-Rich Composite Cathode Materials Examining Hysteresis in Lithium- and Manganese-Rich Composite Cathode Materials 2013 DOE Hydrogen and Fuel...

478

FY 2013 Summary Report: Post-Irradiation Examination of Zircaloy...  

Broader source: Energy.gov (indexed) [DOE]

Examination of Zircaloy-4 Samples in Target Capsules and Initiation of Bending Fatigue Testing for Used Nuclear Fuel Vibration Integrity Investigations FY 2013 Summary Report:...

479

Role of inorganic chemistry on nuclear energy examined  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Role of inorganic chemistry on nuclear energy examined Inorganic chemistry can provide insight and improve technical issues surrounding nuclear power production and waste...

480

'Comic Book Physics' examined at Jefferson Lab's March 25 Science...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

examined at Jefferson Lab's March 25 Science Series event February 26, 2003 The wild, wacky world of 'Comic Book Physics' will be investigated by guest speaker Jim...

Note: This page contains sample records for the topic "ideas examine barriers" 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.


481

aes physical examination: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

position and dimensions of flaws that produce AE. Time of Flight Diffraction (TOFD), ultrasonic examination is also commonly used for flaw sizing. 1.5 The values stated...

482

WRAP operational test report drum non destructive examination system  

SciTech Connect (OSTI)

This operational test report was performed to verify the WRAP Facility Drum Non-Destructive Examination systems operate in accordance with the system designs and specifications.

HUMPHRYS, K.L.

1999-07-01T23:59:59.000Z

483

Research: A typical thermal barrier coating consists of two layers over the substrate: 1) a ceramic top coat to  

E-Print Network [OSTI]

Research: A typical thermal barrier coating consists of two layers over the substrate: 1) a ceramic-level understanding of the metal-ceramic and ceramic-ceramic interfaces present in thermal barrier coatings. We have interfaces weaken as the ceramic thickens. This provides atomic-level insight as to why thermal barrier

Carter, Emily A.

484

Regulatory issues and assumptions associated with barriers in the vadose zone surrounding buried waste  

SciTech Connect (OSTI)

One of the options for control of contaminant migration from buried waste sites is the construction of a subsurface barrier that consists of a wall of low permeability material. The barrier material should be compatible with soil and waste conditions specific to the site and have as low an effective diffusivity as is reasonably achievable to minimize or inhibit transport of moisture and contaminants. This report addresses the regulatory issues associated with the use of non-traditional organic polymer barriers as well as the use of soil-bentonite or cement-bentonite mixtures for such barriers, considering barriers constructed from these latter materials to be a regulatory baseline. The regulatory issues fall into two categories. The first category consists of issues associated with the acceptability of such barriers to the EPA as a method for achieving site or performanceimprovement. The second category encompasses those regulatory issues concerning health, safety and the environment which must be addressed regarding barrier installation and performance, especially if non-traditional materials are to be used.

Siskind, B.; Heiser, J.

1993-02-01T23:59:59.000Z

485

Engineered Barrier System performance requirements systems study report. Revision 02  

SciTech Connect (OSTI)

This study evaluates the current design concept for the Engineered Barrier System (EBS), in concert with the current understanding of the geologic setting to assess whether enhancements to the required performance of the EBS are necessary. The performance assessment calculations are performed by coupling the EBS with the geologic setting based on the models (some of which were updated for this study) and assumptions used for the 1995 Total System Performance Assessment (TSPA). The need for enhancements is determined by comparing the performance assessment results against the EBS related performance requirements. Subsystem quantitative performance requirements related to the EBS include the requirement to allow no more than 1% of the waste packages (WPs) to fail before 1,000 years after permanent closure of the repository, as well as a requirement to control the release rate of radionuclides from the EBS. The EBS performance enhancements considered included additional engineered components as well as evaluating additional performance available from existing design features but for which no performance credit is currently being taken.

Balady, M.A.

1997-01-14T23:59:59.000Z

486

Engineered Barrier Systems Thermal-Hydraulic-Chemical Column Test Report  

SciTech Connect (OSTI)

The Engineered Barrier System (EBS) Thermal-Hydraulic-Chemical (THC) Column Tests provide data needed for model validation. The EBS Degradation, Flow, and Transport Process Modeling Report (PMR) will be based on supporting models for in-drift THC coupled processes, and the in-drift physical and chemical environment. These models describe the complex chemical interaction of EBS materials, including granular materials, with the thermal and hydrologic conditions that will be present in the repository emplacement drifts. Of particular interest are the coupled processes that result in mineral and salt dissolution/precipitation in the EBS environment. Test data are needed for thermal, hydrologic, and geochemical model validation and to support selection of introduced materials (CRWMS M&O 1999c). These column tests evaluated granular crushed tuff as potential invert ballast or backfill material, under accelerated thermal and hydrologic environments. The objectives of the THC column testing are to: (1) Characterize THC coupled processes that could affect performance of EBS components, particularly the magnitude of permeability reduction (increases or decreases), the nature of minerals produced, and chemical fractionation (i.e., concentrative separation of salts and minerals due to boiling-point elevation). (2) Generate data for validating THC predictive models that will support the EBS Degradation, Flow, and Transport PMR, Rev. 01.

W.E. Lowry

2001-12-13T23:59:59.000Z

487

Method And Apparatus For Determining Health Of Thermal Barrier Coatings  

DOE Patents [OSTI]

A method for determining past-service conditions and/or remaining useful life of a component of a combustion engine and/or a thermal barrier coating ("TBC") of the component comprises providing a photoluminescent ("PL") material in the TBC, directing an exciting radiation at the TBC, measuring the intensity of a characteristic peak in the emission spectrum of the PL material, and correlating the intensity of the characteristic peak or another quantity derived therefrom to an amount of a new phase that has been formed as a result of the exposure of the component to extreme temperatures. An apparatus for carrying out the method comprises a radiation source that provides the exciting radiation to the TBC, a radiation detector for detecting radiation emitted by the PL material, and means for relating a characteristic of the emission spectrum of the PL material to the amount of the new phase in the TBC, thereby inferring the past-service conditions or the remaining useful life of the component.

Srivastava, Alok Mani (Niskayuna, NY); Setlur, Anant Achyut (Niskayuna, NY); Comanzo, Holly Ann (Niskayuna, NY); Devitt, John William (Clifton Park, NY); Ruud, James Anthony (Delmar, NY); Brewer, Luke Nathaniel (Clifton Park, NY)

2005-09-13T23:59:59.000Z

488

Single and pair neutron transfers at sub-barrier energies  

SciTech Connect (OSTI)

Multinucleon transfer cross sections in the {sup 96}Zr+{sup 40}Ca system have been measured, in inverse kinematics, at bombarding energies ranging from the Coulomb barrier to {approx}25% below. Targetlike recoils have been identified in A, Z and velocity with the large solid angle magnetic spectrometer PRISMA. The experimental data for one- and two-neutron transfer channels have been compared with semiclassical microscopic calculations. For the two-neutron transfer channels the relevance of the transitions to the ground state and to the 0{sup +} excited states of {sup 42}Ca are discussed by employing, for the reaction mechanism, the successive approximation. It is found that the transition to the 0{sup +} state at {approx}6 MeV, whose wave function is dominated by the two neutrons in the 2p{sub 3/2} shell, is much larger than the ground state one. The comparison with the inclusive data reveals that transitions to states with high multipolarity and non-natural parity are important. This suggests that more complex two-particle correlations have to be incorporated in the treatment of the transfer process.

Corradi, L.; Fioretto, E.; Michelagnoli, C.; Stefanini, A. M.; Valiente-Dobon, J. J. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy); Szilner, S. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy); Ruder Boskovic Institute, HR-10 001 Zagreb (Croatia); Pollarolo, G. [Dipartimento di Fisica Teorica, Universita di Torino, and Istituto Nazionale di Fisica Nucleare, I-10125 Torino (Italy); Colo, G. [Dipartimento di Fisica, Universita degli Studi di Milano and Istituto Nazionale di Fisica Nucleare, I-20133 Milano (Italy); Mason, P.; Farnea, E.; Montagnoli, G.; Montanari, D.; Scarlassara, F.; Ur, C. A. [Dipartimento di Fisica, Universita di Padova, and Istituto Nazionale di Fisica Nucleare, I-35131 Padova (Italy); Gadea, A. [IFIC, CSIC-Universidad de Valencia, E-46071 Valencia (Spain); Haas, F. [Institut Pluridisciplinaire Hubert Curien, CNRS-IN2P3, Universite de Strasbourg, F-67037 Strasbourg (France); Jelavic-Malenica, D.; Soic, N. [Ruder Boskovic Institute, HR-10 001 Zagreb (Croatia); Marginean, N. [Horia Hulubei National Institute of Physics and Nuclear Engineering, R-077125, Bucharest-Magurele (Romania)

2011-09-15T23:59:59.000Z

489

Evaportranspiration studies for protective barriers: FY 1989 status report  

SciTech Connect (OSTI)

This document describes the results of technological developments and experiments at the Small Tube Lysimeter Facility. The objective of this research is to develop the capability to predict evapotranspiration in support of studies of water infiltration control for the Hanford Protective Barrier Development Program. Evapotranspiration is the combined loss of water from plants and soil surfaces to the atmosphere. This process must be predictable to adequately model soil water dynamics. We develop a miniature greenhouse (gas exchange chamber), where internal temperature and relative humidity can be controlled. With this device we measured evapotranspiration, transpiration, and carbon dioxide exchange rates from lysimeters with various surface and plant characteristics. We tested the effect on gas exchange rates and sand, gravel, admix, and soil surfaces in lysimeters where, cheat-grass, Bromus tectorum, had been seeded. Results showed that evapotranspiration was unaffected by the surface treatments. Estimated transpiration rates were higher for plants growing in sand compared with rates for plants growing in the admix and soil treatments. Soil evaporation rates were higher in the gravel treatment than in the sand treatment. Future research will entail parameterization of relationships between evapotranspiration, transpiration, soil evaporation, carbon dioxide exchange, and the abiotic and biotic factors that drive these processes for model development.

Link, S.O.; Thiede, M.E.; Downs, J.L.; Lettau, D.J. (Pacific Northwest Lab., Richland, WA (United States)); Waugh, W.J. (Geotech, Grand Junction, CO (United States))

1992-05-01T23:59:59.000Z

490

MERCURY OXIDIZATION IN NON-THERMAL PLASMA BARRIER DISCHARGE SYSTEM  

SciTech Connect (OSTI)

In the past decade, the emission of toxic elements from human activities has become a matter of great public concern. Hg, As, Se and Cd typically volatilize during a combustion process and are not easily caught with conventional air pollution control techniques. In addition, there is no pollution prevention technique available now or likely be available in the foreseeable future that can prevent the emission of these trace elements. These trace elements pose additional scientific challenge as they are present at only ppb levels in large gas streams. Mercury, in particular, has attracted significant attention due to its high volatility, toxicity and potential threat to human health. In the present research work, a non-thermal plasma dielectric barrier discharge technique has been used to oxidize Hg{sup 0}(g) to HgO. The basic premise of this approach is that Hg{sup 0} in vapor form cannot be easily removed in an absorption tower whereas HgO as a particulate is amiable to water scrubbing. The work presented in this report consists of three steps: (1) setting-up of an experimental apparatus to generate mercury vapors at a constant rate and modifying the existing non-thermal plasma reactor system, (2) solving the analytical challenge for measuring mercury vapor concentration at ppb level, and (3) conducting experiments on mercury oxidation under plasma conditions to establish proof of concept.

V.K. Mathur

2003-02-01T23:59:59.000Z

491

Free Energy Barrier for Electric Field Driven Polymer Entry into Nanoscale Channels  

E-Print Network [OSTI]

Free energy barrier for entry of a charged polymer into a nanoscale channel by a driving electric field is studied theoretically and using molecular dynamics simulations. Dependence of the barrier height on the polymer length, the driving field strength, and the channel entrance geometry is investigated. Squeezing effect of the electric field on the polymer before its entry to the channel is taken into account. It is shown that lateral confinement of the polymer prior to its entry changes the polymer length dependence of the barrier height noticeably. Our theory and simulation results are in good agreement and reasonably describe related experimental data.

Narges Nikoofard; Hossein Fazli

2011-04-27T23:59:59.000Z

492

Sub-barrier fusion excitation for the system $^7$Li+$^{28}$Si  

E-Print Network [OSTI]

The sub-barrier fusion excitation functions are measured for the first time for the system $^7$Li +$^{28}$Si by the characteristic $\\gamma$-ray method in the energy range $E_{lab}$= 7-11.5 MeV. The results show an enhancement, below the barrier, by about a factor of two when compared with the one-dimensional barrier penetration (1D BPM) model. Introduction of coupling with the rotational 2$^{+}$ state (1.779MeV) of the target improves the fit somewhat, but still an enhancement of about 25-40% remains.

Mandira Sinha; H. Majumdar; P. Basu; Subinit Roy; R. Bhattacharya; M. Biswas; M. K. Pradhan; S. Kailas

2008-08-06T23:59:59.000Z

493

Theoretical study of particle transport in electron internal transport barriers in TCV  

SciTech Connect (OSTI)

Previous results from the analysis of fully non inductively sustained electron internal transport barriers (eITBs) in TCV show that a strong coupling exists between electron temperature and density profiles inside the barrier. A phenomenology that is completely different from the standard L-mode is observed . New experimental results assess transient phases to calculate particle convection and diffusion coefficients, allowing also to discuss the role of neoclassical transport. Gyrokinetic and gyrofluid analysis of steady-state eITBs provide tools to understand the mechanism that drive the observed density peaking in advanced scenarios with internal transport barriers and dominant electron heating.

Fable, E.; Sauter, O.; Marinoni, A.; Zucca, C. [Centre de Recherches en Physique des Plasmas, Association EURATOM -- Confederation Suisse, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)

2006-11-30T23:59:59.000Z

494

Natural analog study of engineered protective barriers at the Hanford Site  

SciTech Connect (OSTI)

The purpose of this study is to evaluate surficial sedimentary deposits formed in the Pasco Basin over the geologic past as analogs for engineered protective barriers. Evidence for likely changes to be expected in an engineered barrier are preserved in geologically recent deposits. Although the design life of the engineered bonier is only 1,000 years, soils and sediments of this age are uncommon in the Pasco Basin. The evidence of and probability for the following natural processes that could adversely affect the long-term stability of an engineered protective barrier reviewed in this report are deflation by wind, soil compaction, soil eluviation/illuviation, bioturbation, and cryoturbation.

Bjornstad, B.N.; Teel, S.S.

1993-09-01T23:59:59.000Z

495

Enhancement of tunnel magnetoresistance in magnetic tunnel junction by a superlattice barrier  

SciTech Connect (OSTI)

Tunnel magnetoresistance of magnetic tunnel junction improved by a superlattice barrier composed of alternate layers of a nonmagnetic metal and an insulator is proposed. The forbidden band of the superlattice is used to predict the low transmission range in the superlattice barrier. By forbidding electron transport in the anti-parallel configuration, the tunnel magnetoresistance is enhanced in the superlattice junction. The results show that the tunnel magnetoresistance ratio for a superlattice magnetic tunnel junction is greater than that for traditional single or double barrier junctions.

Chen, C. H.; Hsueh, W. J., E-mail: hsuehwj@ntu.edu.tw [Nanomagnetism Group, Department of Engineering Science and Ocean Engineering, National Taiwan University, 1, Sec. 4, Roosevelt Road, Taipei 10660, Taiwan (China)

2014-01-27T23:59:59.000Z

496

Low resistance barrier layer for isolating, adhering, and passivating copper metal in semiconductor fabrication  

SciTech Connect (OSTI)

Cubic or metastable cubic refractory metal carbides act as barrier layers to isolate, adhere, and passivate copper in semiconductor fabrication. One or more barrier layers of the metal carbide are deposited in conjunction with copper metallizations to form a multilayer characterized by a cubic crystal structure with a strong (100) texture. Suitable barrier layer materials include refractory transition metal carbides such as vanadium carbide (VC), niobium carbide (NbC), tantalum carbide (TaC), chromium carbide (Cr.sub.3 C.sub.2), tungsten carbide (WC), and molybdenum carbide (MoC).

Weihs, Timothy P. (Baltimore, MD); Barbee, Jr., Troy W. (Palto Alto, CA)

2002-01-01T23:59:59.000Z

497

1-nm-thick graphene tri-layer as the ultimate copper diffusion barrier  

SciTech Connect (OSTI)

We demonstrate the thinnest ever reported Cu diffusion barrier, a 1-nm-thick graphene tri-layer. X-ray diffraction patterns and Raman spectra show that the graphene is thermally stable at up to 750?°C against Cu diffusion. Transmission electron microscopy images show that there was no inter-diffusion in the Cu/graphene/Si structure. Raman analyses indicate that the graphene may have degraded into a nanocrystalline structure at 750?°C. At 800?°C, the perfect carbon structure was damaged, and thus the barrier failed. The results of this study suggest that graphene could be the ultimate Cu interconnect diffusion barrier.

Nguyen, Ba-Son [Department of Mechanical Engineering, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China); Lin, Jen-Fin [Department of Mechanical Engineering, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China); Center for Micro/Nano Science and Technology, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China); Perng, Dung-Ching, E-mail: dcperng@ee.ncku.edu.tw [Institute of Microelectronics and Electrical Engineering Department, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China); Center for Micro/Nano Science and Technology, National Cheng Kung University, 1 University Road, Tainan 701, Taiwan (China)

2014-02-24T23:59:59.000Z

498

Elimination of two level fluctuators in superconducting quantum bits by an epitaxial tunnel barrier  

SciTech Connect (OSTI)

Quantum computing based on Josephson junction technology is considered promising due to its scalable architecture. However, decoherence is a major obstacle. Here, we report evidence for improved Josephson quantum bits (qubits) using a single-crystal Al{sub 2}O{sub 3} tunnel barrier. We have found an {approx}80% reduction in the density of the spectral splittings that indicate the existence of two-level fluctators (TLFs) in amorphous tunnel barriers. The residual {approx}20% TLFs can be attributed to interfacial effects that may be further reduced by different electrode materials. These results show that decoherence sources in the tunnel barrier of Josephson qubits can be identified and eliminated.

Oh, Seongshik [National Institute of Standards and Technology, Boulder, Colorado 80305 (United States); Department of Physics, University of Illinois, Urbana, Illinois 61801 (United States); Cicak, Katarina; Kline, Jeffrey S.; Sillanpaeae, Mika A.; Osborn, Kevin D.; Whittaker, Jed D.; Simmonds, Raymond W.; Pappas, David P. [National Institute of Standards and Technology, Boulder, Colorado 80305 (United States)

2006-09-01T23:59:59.000Z

499

Mathematical Explanation: Examining Approaches to the Problem of Applied Mathematics  

E-Print Network [OSTI]

are interested in what sort of relationship between mathematics and the physical world allows mathematics to play the role that it does. In this thesis, I examine both areas of literature in detail. I begin by examining the details of the indispensability...

Lishinski, Alex

2013-05-01T23:59:59.000Z

500

Image analysis for remote examination of fuel pins  

SciTech Connect (OSTI)

An image analysis system operating in the Wing 9 Hot Cell Facility at Los Alamos National Laboratory provides quantitative microstructural analyses of irradiated fuels and materials. With this system, fewer photomicrographs are required during postirradiation microstructural examination and data are available for analysis much faster. The system has been used successfully to examine Westinghouse Advanced Reactors Division experimental fuel pins.

Cook, J.H.; Nayak, U.P.

1982-01-01T23:59:59.000Z