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1

Species and community response to above normal precipitation following prolonged drought in the northern Mojave Desert  

Science Conference Proceedings (OSTI)

Little information is available on how desert plant communities that are dominated by perennial species respond to normal and above normal precipitation following prolonged drought. Intuitively, one would expect total canopy cover to increase. Whether a concomitant increase in the density of perennial species also occurs is unknown. Even less is known about how individual species respond to above normal precipitation following drought. From 1987 through 1991 a prolonged drought occurred in much of the western United States, including the northern Mojave Desert. In March 1991 the northern Mojave Desert received well above normal precipitation. The following two winters (December--March) also had above normal precipitation (150 to 200 % of normal, unpublished data). Ongoing vegetation characterization studies by the US Department of Energy (DOE) at Yucca Mountain, Nevada, allowed EG&G Energy Measurements to collect data that could be used to infer how both vegetation associations and individual species respond to above normal precipitation following prolonged drought. This paper reports the preliminary results.

Schultz, B.W. [Nevada Univ., Reno, NV (United States). Desert Research Inst.; Ostler, W.K. [EG and G Energy Measurements, Inc., Las Vegas, NV (United States)

1993-12-31T23:59:59.000Z

2

Effect of temperature on phonon contribution to Green function of high-temperature superconducting cuprates  

Science Conference Proceedings (OSTI)

The phonon contribution to the nodal electron Green function in cuprates is considered. It is shown that the temperature dependence of the real part of the self-energy component of the Green function for cuprates with a hole doping level close to optimal is described by the electron-phonon interaction in the framework of the extended Eliashberg model.

Korneeva, L. A., E-mail: korneeva_mila@mail.ru; Mazur, E. A. [National Research Nuclear University MEPhI (Russian Federation)

2012-08-15T23:59:59.000Z

3

Modeling the Contribution of the Brussels Heat Island to a Long Temperature Time Series  

Science Conference Proceedings (OSTI)

A mesoscale meteorological model containing a detailed land surface model is used to assess the contribution of urban heating to the temperature record of the national recording station of Belgium in Uccle, near Brussels. The Advanced Regional ...

K. Van Weverberg; K. De Ridder; A. Van Rompaey

2008-04-01T23:59:59.000Z

4

The Impact of Tropical Indian Ocean Variability on Summer Surface Air Temperature in China  

Science Conference Proceedings (OSTI)

Evidence is presented that the boreal summer surface air temperature over south China and northeast China is remotely influenced by the Indian Ocean Basin mode (IOBM) sea surface temperature (SST) anomalies. Above-normal temperature in south China ...

Kaiming Hu; Gang Huang; Ronghui Huang

2011-10-01T23:59:59.000Z

5

Relative Contribution of Greenhouse Gases and Ozone-Depleting Substances to Temperature Trends in the Stratosphere: A Chemistry–Climate Model Study  

Science Conference Proceedings (OSTI)

The temperature of the stratosphere has decreased over the past several decades. Two causes contribute to that decrease: well-mixed greenhouse gases (GHGs) and ozone-depleting substances (ODSs). This paper addresses the attribution of temperature ...

Richard S. Stolarski; Anne R. Douglass; Paul A. Newman; Steven Pawson; Mark R. Schoeberl

2010-01-01T23:59:59.000Z

6

Contribution of Changes in Sea Surface Temperature and Aerosol Loading to the Decreasing Precipitation Trend in Southern China  

Science Conference Proceedings (OSTI)

The effects of increasing sea surface temperature (SST) and aerosol loading in a drought region in Southern China are studied using aerosol optical depth (AOD), low-level cloud cover (LCC), visibility, and precipitation from observed surface data;...

Yanjie Cheng; Ulrike Lohmann; Junhua Zhang; Yunfeng Luo; Zuoting Liu; Glen Lesins

2005-05-01T23:59:59.000Z

7

Estimating the Urban Heat Island Contribution to Urban and Rural Air Temperature Differences over Complex Terrain: Application to an Arid City  

Science Conference Proceedings (OSTI)

This study proposes a method for estimating the canopy-layer net urban heat island (UHI) in regions with complex terrain that lack preurban observations. The approach is based on a linear relationship between the urban–rural temperature ...

Hadas Saaroni; Baruch Ziv

2010-10-01T23:59:59.000Z

8

Contribution of Land Use Changes to Near-Surface Air Temperatures during Recent Summer Extreme Heat Events in the Phoenix Metropolitan Area  

Science Conference Proceedings (OSTI)

The impact of 1973–2005 land use–land cover (LULC) changes on near-surface air temperatures during four recent summer extreme heat events (EHEs) are investigated for the arid Phoenix, Arizona, metropolitan area using the Weather Research and ...

Susanne Grossman-Clarke; Joseph A. Zehnder; Thomas Loridan; C. Sue B. Grimmond

2010-08-01T23:59:59.000Z

9

Above-normal outages of U.S. nuclear capacity persist at the start ...  

U.S. Energy Information Administration (EIA)

Southern California Edison's San Onofre Nuclear Generating ... Progress's handling of Crystal River repairs became an issue in the company's recent merger with Duke ...

10

Above-normal outages of U.S. nuclear capacity persist at the start ...  

U.S. Energy Information Administration (EIA)

... have both been offline since January 2012 as a precaution after a steam generator tube leak led to the discovery of excessive wear in the plant's new steam ...

11

Above-normal outages of U.S. nuclear capacity persist at the start ...  

U.S. Energy Information Administration (EIA)

Uranium fuel, nuclear reactors, generation, spent fuel. Total Energy. ... Privacy/Security Copyright & Reuse Accessibility. Related Sites U.S. Department of Energy

12

Contributions to Training - CECM  

E-Print Network (OSTI)

May 23, 2001 ... Contributions to Training. Allan Wittkopf: I am co-supervising Allan for his Ph.D ( with M. Monagan of SFU). [Allan's Homepage] . Allan helped ...

13

A Decomposition of Feedback Contributions to Polar Warming Amplification  

Science Conference Proceedings (OSTI)

Polar surface temperatures are expected to warm 2-3 times faster than the global mean surface temperature; a phenomenon referred to as polar warming amplification. Therefore, understanding individual process contributions to the polar warming is ...

Patrick C. Taylor; Ming Cai; Aixue Hu; Jerry Meehl; Warren Washington; Guang J. Zhang

14

Contribute | Open Energy Information  

Open Energy Info (EERE)

Contribute Contribute Jump to: navigation, search Get involved with OpenEI Contents 1 Abstract 2 Utility Rates 3 Tools 4 Events 5 Definitions 6 Energy Generation Facility 7 Incentives and Policies for Renewable Energy and Energy Efficiency 8 Companies & Organizations 9 Creating a Page From Scratch Abstract OpenEI is a global knowledge-sharing community working together to connect people with the latest information and data on energy resources. Even if you're not an energy expert, you may have some information that could help our community continue to grow. Maybe we don't yet have the rate structure for your electric utility -- you can add it. Maybe you know about a new wind farm or geothermal facility that was recently developed -- you can add that information here. Or maybe you're attending an upcoming energy-related

15

Abstracts of contributed papers  

Science Conference Proceedings (OSTI)

This volume contains 571 abstracts of contributed papers to be presented during the Twelfth US National Congress of Applied Mechanics. Abstracts are arranged in the order in which they fall in the program -- the main sessions are listed chronologically in the Table of Contents. The Author Index is in alphabetical order and lists each paper number (matching the schedule in the Final Program) with its corresponding page number in the book.

Not Available

1994-08-01T23:59:59.000Z

16

PAC99 Contributions  

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

Contributions to PAC'99 NLC Technical Page • Meeting Schedule • SLAC Home Page This is a listing a papers presented at the 1999 Particle Accelerator Conference in New York City, NY related to the ongoing design work for JLC/NLC X-band linear collider. The papers have been separated into four difference catagories: Summary Talks & Global Systems Electron & Positron Injectors (10 GeV) Main Linacs & X-band Rf Beam Delivery & IR transport Summary Talks & Global Systems: Feedback Systems for Linear Colliders, L. Hendrickson, et al. Accelerator Physics Challenges in Future Linear Colliders, T. Raubenheimer The Next Linear Collider Machine Protections Systems, M. Ross, et al. Use of Simulation Programs for the Modelling of the Next Linear

17

SRMS-5 Conference Contributions  

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

SRMS 5 logo SRMS 5 logo Fifth International Conference on Synchrotron Radiation in Materials Science SRMS-5 Conference Contributions Table of Contents and Program Introduction Welcome to the 5th International Conference on Synchrotron Radiation in Materials Science (SRMS-5). This conference, the latest in a series of international conferences that are held every two years, takes place at the Drake Hotel in Chicago from July 30 - August 2, 2006. It brings together leading edge researchers from around the world and is a celebration of the strong and increasingly important relationship between materials science and synchrotron radiation research. SRMS-5 takes place at a time when a large proportion of the scientific research at synchrotron user facilities is in materials science and

18

Do Models Underestimate the Solar Contribution to Recent Climate Change?  

Science Conference Proceedings (OSTI)

Current attribution analyses that seek to determine the relative contributions of different forcing agents to observed near-surface temperature changes underestimate the importance of weak signals, such as that due to changes in solar irradiance. ...

Peter A. Stott; Gareth S. Jones; John F. B. Mitchell

2003-12-01T23:59:59.000Z

19

Novel Techniques for Investigating the High Temperature ...  

Science Conference Proceedings (OSTI)

(enriched to 87%, ga=O.87) for 4 hours and 62 hours at the same temperature. ... Neglecting any contribution from 170-, which has a natural abundance of ...

20

EMSL Contribution Plan  

Science Conference Proceedings (OSTI)

This Contribution Plan is EMSL’s template for achieving our vision of simultaneous excellence in all aspects of our mission as a national scientific user facility. It reflects our understanding of the long-term stewardship we must work toward to meet the scientific challenges faced by the Department of Energy (DOE) and the nation. During the next decade, we will implement the strategies contained in this Plan, working closely with the scientific community, our advisory committees, DOE’s Office of Biological and Environmental Research, and other key stakeholders. This Plan is fully aligned with the strategic plans of DOE, its Office of Science, and the Pacific Northwest National Laboratory (PNNL). We recognize that shifts in science and technology, national priorities, and resources made available through the Federal budget process create planning uncertainties and, ultimately, a highly dynamic planning environment. Accordingly, this Plan should be viewed as a living document and we continually evaluate the changing needs and opportunities posed by our stakeholders (i.e., DOE, users, staff, advisory committees), work closely with them to understand and respond to those changes, and align our strategy accordingly. This Plan is organized around two sections. Section 1 describes our vision and four strategic outcomes: 1) Scientific Innovation, 2) Capabilities that Transform Science, 3) Outstanding Management and Operations, and Engaged and Proactive Users. These outcomes provide the framework for seven critical actions we must take during the next 3 to 5 years: 1) Establishing leadership in EMSL science themes, 2) building and deploying transformational capabilities, 3) integrating computation with experiment, 4) ensuring EMSL’s workforce meets the scientific challenges of the future, 5) creating partnerships, 6) attracting and engaging users in EMSL’s long-term strategy, and 7) building a research infrastructure that meets emerging scientific needs. Section 2 describes EMSL’s detailed business plan, including an analysis of opportunity, organizational investments, and actionable milestones.

Campbell, Allison A.

2008-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Radiance Temperature  

Science Conference Proceedings (OSTI)

... Temperature using Detectors Calibrated for Absolute Spectral Power Response, HW ... A Third Generation Water Bath Based Blackbody Source, JB ...

2013-06-27T23:59:59.000Z

22

High Performance Computing contributions to  

E-Print Network (OSTI)

High Performance Computing contributions to DoD Mission Success 2002 #12;Approved for public/C nanotube in a field emitter configuration #12;HIGH PERFORMANCE COMPUTING contributions tocontributions ­ SECTION 1 INTRODUCTION 1 Introduction 3 Overview of the High Performance Computing Modernization Program 3

23

TRENDS: TEMPERATURE  

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

Historical Isotopic Temperature Record from the Vostok Ice Core Historical Isotopic Temperature Record from the Vostok Ice Core Graphics Digital Data J.R. Petit, D. Raynaud, and C. Lorius Laboratoire de Glaciogie et Géophysique de l'Environnement, CNRS, Saint Martin d'Hères Cedex, France J. Jouzel and G. Delaygue Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA/CNRS, L'Orme des Merisiers, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France N.I. Barkov Arctic and Antarctic Research Institute, Beringa Street 38, 199397 St. Petersburg, Russia V.M. Kotlyakov Institute of Geography, Staromonetny, per 29, Moscow 109017, Russia DOI: 10.3334/CDIAC/cli.006 Period of Record 420,000 years BP-present Methods Because isotopic fractions of the heavier oxygen-18 (18O) and deuterium (D) in snowfall are temperature-dependent and a strong spatial correlation

24

Low Temperature Sintering Bonding of Metals Using Ag ...  

Science Conference Proceedings (OSTI)

High surface energy of the nanoparticles contributes the low temperature sintering ... and Welding Conditions of Monopile and Transition for Offshore Wind Plant.

25

Some Considerations Relevant to Computing Average Hemispheric Temperature Anomalies  

Science Conference Proceedings (OSTI)

Three data bases of gridded surface temperature anomalies were used to assess the sensitivity of the average estimated Northern Hemisphere (NH) temperature anomaly to: 1) extreme gridpoint values and 2) zonal band contributions. Over the last 100 ...

S. L. Grotch

1987-07-01T23:59:59.000Z

26

Beamline Temperatures  

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

Temperatures Temperatures Energy: 3.0000 GeV Current: 493.2242 mA Date: 11-Jan-2014 21:40:00 Beamline Temperatures Energy 3.0000 GeV Current 493.2 mA 11-Jan-2014 21:40:00 LN:MainTankLevel 124.4 in LN:MainTankPress 56.9 psi SPEAR-BL:B120HeFlow 15.4 l/min SPEAR-BL:B131HeFlow 22.2 l/min BL 4 BL02:LCW 0.0 ℃ BL02:M0_LCW 31.5 ℃ BL 4-1 BL04-1:BasePlate -14.0 ℃ BL04-1:Bottom1 46.0 ℃ BL04-1:Bottom2 47.0 ℃ BL04-1:Lower 32.0 ℃ BL04-1:Moly 46.0 ℃ BL04-1:ChinGuard1 31.0 ℃ BL04-1:ChinGuard2 31.0 ℃ BL04-1:FirstXtalA -167.0 ℃ BL04-1:FirstXtalB -172.0 ℃ BL04-1:Pad1 31.0 ℃ BL04-1:Pad2 31.0 ℃ BL04-1:SecondXtalA -177.0 ℃ BL04-1:SecondXtalB -175.0 ℃ BL 4-2 BL04-2:BasePlate -14.0 ℃ BL04-2:Bottom1 24.0 ℃ BL04-2:Bottom2 25.0 ℃

27

SER Temperature Coefficient  

SciTech Connect

Experimentally determine the overall isothermal temperature coefficient of the SER up to the design operating temperatures.

Johnson, J.L.

1959-12-31T23:59:59.000Z

28

CDIAC Temperature Data Sets  

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

Temperature CDIAC Climate Holdings Containing Temperature Data Global Data Sets Data Set Name Investigators Data TypeFormat Period of Record NASA GISS Surface Temperature...

29

High Temperatures & Electricity Demand  

E-Print Network (OSTI)

High Temperatures & Electricity Demand An Assessment of Supply Adequacy in California Trends.......................................................................................................1 HIGH TEMPERATURES AND ELECTRICITY DEMAND.....................................................................................................................7 SECTION I: HIGH TEMPERATURES AND ELECTRICITY DEMAND ..........................9 BACKGROUND

30

OpenEI:Contributing | Open Energy Information  

Open Energy Info (EERE)

Contributing Contributing Jump to: navigation, search TODO: Need to provide a better way to create new pages without a form. See http://en.wikipedia.org/wiki/Creating_a_new_page Organizing the world's energy information is a big goal. We all need to pitch in to achieve it. Fortunately, there are many ways to contribute. Below, we list a few of our ideas. Contents 1 Contributing wiki content 1.1 Improving existing articles 1.2 Adding new articles 2 Publicizing the project 2.1 Blogs 2.2 Social bookmarks 2.3 Social networks 2.4 Online forums 2.5 Local groups 2.6 Editing parties 3 Generating information leads Contributing wiki content Improving existing articles Whenever you see an opportunity to make a page better, please do so. Just click on the "Edit" link (or the "Edit with form" link, when available) and

31

Contributions of ENSO and East Indian Ocean SSTA to the Interannual Variability of Northwest Pacific Tropical Cyclone Frequency  

Science Conference Proceedings (OSTI)

This study attempts to understand contributions of ENSO and the boreal summer sea surface temperature anomaly (SSTA) in the East Indian Ocean (EIO) to the interannual variability of tropical cyclone (TC) frequency over the western North Pacific (...

Ruifen Zhan; Yuqing Wang; Xiaotu Lei

2011-01-01T23:59:59.000Z

32

Contributions to automated realtime underwater navigation  

E-Print Network (OSTI)

This dissertation presents three separate-but related-contributions to the art of underwater navigation. These methods may be used in postprocessing with a human in the loop, but the overarching goal is to enhance vehicle ...

Stanway, Michael Jordan

2012-01-01T23:59:59.000Z

33

Solar Warming Submitted to Avalanche.ca Journal Feb. 2008 Can solar warming contribute to dry slab avalanches?  

E-Print Network (OSTI)

Solar Warming Submitted to Avalanche.ca Journal Feb. 2008 Can solar warming contribute to dry slab, when signs of warming, such as relatively warm air temperatures, strong solar radiation, and moist by a skier on a steep south-west facing aspect. Solar warming may have contributed to this release. (photo

Jamieson, Bruce

34

Cooled, temperature controlled electrometer  

DOE Patents (OSTI)

A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

Morgan, John P. (Idaho Falls, ID)

1992-01-01T23:59:59.000Z

35

High temperature furnace  

DOE Patents (OSTI)

A high temperature furnace for use above 2000.degree.C is provided that features fast initial heating and low power consumption at the operating temperature. The cathode is initially heated by joule heating followed by electron emission heating at the operating temperature. The cathode is designed for routine large temperature excursions without being subjected to high thermal stresses. A further characteristic of the device is the elimination of any ceramic components from the high temperature zone of the furnace.

Borkowski, Casimer J. (Oak Ridge, TN)

1976-08-03T23:59:59.000Z

36

Response of California temperature to regional anthropogenic aerosol  

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

Response of California temperature to regional anthropogenic aerosol Response of California temperature to regional anthropogenic aerosol changes Title Response of California temperature to regional anthropogenic aerosol changes Publication Type Journal Article Year of Publication 2008 Authors Novakov, Tihomir, Thomas W. Kirchstetter, Surabi Menon, and Jeffery Aguiar Journal Geophysical Research Letters Volume 35 Issue 19 Abstract In this paper, we compare constructed records of concentrations of black carbon (BC) - an indicator of anthropogenic aerosols - with observed surface temperature trends in California. Annual average BC concentrations in major air basins in California significantly decreased after about 1990, coincident with an observed statewide surface temperature increase. Seasonal aerosol concentration trends are consistent with observed seasonal temperature trends. These data suggest that the reduction in anthropogenic aerosol concentrations contributed to the observed surface temperature increase. Conversely, high aerosol concentrations may lower surface temperature and partially offset the temperature increase of greenhouse gases.

37

UPGRADING EXISTING MWCS WITH ESPS: THE CONTRIBUTION OF COMBUSTION IMPROVEMENT VERSUS APC TEMPERATURE REDUCTION  

E-Print Network (OSTI)

in the range of 1.3 to 1.9 sodium-based reagents (sodium bicarbonate or trona). The tested facility of the Davis County WTE facility it was advantageous to inject the trona reagent into the roughly 600°F gases entering the economizer, removing bound moisture characteristic of trona, while gaining the retention time

Columbia University

38

Enzymatic temperature change indicator  

DOE Patents (OSTI)

A temperature change indicator is described which is composed of an enzyme and a substrate for that enzyme suspended in a solid organic solvent or mixture of solvents as a support medium. The organic solvent or solvents are chosen so as to melt at a specific temperature or in a specific temperature range. When the temperature of the indicator is elevated above the chosen, or critical temperature, the solid organic solvent support will melt, and the enzymatic reaction will occur, producing a visually detectable product which is stable to further temperature variation.

Klibanov, Alexander M. (Newton, MA); Dordick, Jonathan S. (Iowa City, IA)

1989-01-21T23:59:59.000Z

39

First Principles Contributions to the Thermodynamic Assessment...  

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

temperature. Finite T Thermodynamic Predictions The total Gibbs free energy of a stoichiometric compound is determined as: (0 K) calculation. The E vib (T) and S vib (T) are...

40

Phonon contribution to the shear viscosity of a superfluid Fermi gas in the unitarity limit  

E-Print Network (OSTI)

We present a detailed analysis of the contribution of small-angle Nambu-Goldstone boson (phonon) collisions to the shear viscosity, $\\eta$, in a superfluid atomic Fermi gas close to the unitarity limit. We show that the experimental values of the shear viscosity coefficient to entropy ratio, $\\eta/s$, obtained at the lowest reached temperature can be reproduced assuming that phonons give the leading contribution to $\\eta$. The phonon contribution is evaluated considering $1 \\leftrightarrow 2$ processes and taking into account the finite size of the experimental system. In particular, for very low temperatures, $T \\lesssim 0.1 T_F$, we find that phonons are ballistic and the contribution of phonons to the shear viscosity is determined by the processes that take place at the interface between the superfluid and the normal phase. This result is independent of the detailed form of the phonon dispersion law and leads to two testable predictions: the shear viscosity should correlate with the size of the optical trap and it should decrease with decreasing temperature. For higher temperatures the detailed form of the phonon dispersion law becomes relevant and, within our model, we find that the experimental data for $\\eta/s$ can be reproduced assuming that phonons have an anomalous dispersion law.

Massimo Mannarelli; Cristina Manuel; Laura Tolos

2012-12-20T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Instruction Guide Retirement Plan Contributions: Paycheck Deductions  

E-Print Network (OSTI)

and the total year to date figure. The Amount consists of 5.14% that is sent to your ORP Investment Provider contribution The Before-Tax Deductions column now shows two entries: ORP EE is the regular voluntary employee to date figure. The Amount consists of 5.14% that is sent to your ORP Investment Provider and 0.5% for FRS

Watson, Craig A.

42

The contribution that reporting of greenhouse gas  

E-Print Network (OSTI)

The contribution that reporting of greenhouse gas emissions makes to the UK meeting its climate that reporting of greenhouse gas emissions makes to the UK meeting its climate change objectives: A review leadership. The UK has published guidance on how organisations should measure and report their greenhouse gas

43

Yeast and Temperature  

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

Yeast and Temperature Yeast and Temperature Name: Alyssaaum Location: N/A Country: N/A Date: N/A Question: How does temperature affect yeast? Replies: Dear Alyssa, At low temperatures (0-10 C) yeast will not grow, but not die either. At temperatures 10-37 C yeast will grow and multiply, faster at higher temperatures with an optimal growth at 30 or 37 C (that depends on the species). At higher temperature the cells become stressed, meaning that their content becomes damaged and which can be repaired to some degree. At high temperatures (>50 C) the cells die. The bacteria can survive freezing under certain conditions. When baking bread all yeast dies during the process. Dr. Trudy Wassenaar yeast is a unique type of fungi that grows quickly by rapid cell division. It grows best at about 100 degrees fahrenheit, colder will cause it to go dormant, much warmer could kill it

44

Temperature Variability over Africa  

Science Conference Proceedings (OSTI)

The variation of near-surface air temperature anomalies in Africa between 1979 and 2010 is investigated primarily using Microwave Sounding Unit (MSU) total lower-tropospheric temperature data from the Remote Sensing Systems (RSS) and the ...

Jennifer M. Collins

2011-07-01T23:59:59.000Z

45

Fish and Temperature  

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

Fish and Temperature Name: Christopher Location: NA Country: NA Date: NA Question: Dear Sirs, I am doing a project on a sand tiger shark and i was wondering if temperature...

46

Climatic Temperature Normals  

Science Conference Proceedings (OSTI)

The published 1951–80 daily normals of maximum and minimum temperatures were prepared by interpolating between average monthly values. This study compares the published normal and 30-yr average daily temperatures in the eastern half of the United ...

Nathaniel B. Guttman; Marc S. Plantico

1987-10-01T23:59:59.000Z

47

Hygrometry with Temperature Stabilization  

Science Conference Proceedings (OSTI)

A method is presented for stabilizing the temperature of air to allow the use of temperature-sensitive, humidity sensors for direct determination of an invariant humidity characteristic such as specific humidity and/or its fluctuations. Problems ...

Krzysztof E. Haman; Andrzej M. Makulski

1985-12-01T23:59:59.000Z

48

Contribution of HD molecules in cooling of the primordial gas  

E-Print Network (OSTI)

We study the effects of HD molecules on thermochemical evolution of the primordial gas behind shock waves, possibly arised in the process of galaxy formation. We find the critical shock velocity when deuterium transforms efficiently into HD molecules which then dominate gas cooling. Above this velocity the shocked gas is able to cool down to the temperature of the cosmic microwave background. Under these conditions the corresponding Jeans mass depends only on redshift and initial density of baryons $M_J \\propto \\delta_c^{-0.5} (1+z)^{0.5}$. At $z\\simgt 45$ HD molecules heat shocked gas, and at larger redshift their contribution to thermal evolution becomes negligible.

E. O. Vasiliev; Yu. A. Shchekinov

2005-07-26T23:59:59.000Z

49

Anisotropic Curie Temperature Materials  

Science Conference Proceedings (OSTI)

Symposium, Magnetic Materials for Energy Applications -III. Presentation Title, Anisotropic Curie Temperature Materials. Author(s), Harsh Deep Chopra, Jason ...

50

Temperature-profile detector  

DOE Patents (OSTI)

Temperature profiles at elevated temperature conditions are monitored by use of an elongated device having two conductors spaced by the minimum distance required to normally maintain an open circuit between them. The melting point of one conductor is selected at the elevated temperature being detected, while the melting point of the other is higher. As the preselected temperature is reached, liquid metal will flow between the conductors creating short circuits which are detectable as to location.

Not Available

1981-01-29T23:59:59.000Z

51

Temperature profile detector  

DOE Patents (OSTI)

Temperature profiles at elevated temperature conditions are monitored by use of an elongated device having two conductors spaced by the minimum distance required to normally maintain an open circuit between them. The melting point of one conductor is selected at the elevated temperature being detected, while the melting point of the other is higher. As the preselected temperature is reached, liquid metal will flow between the conductors, creating short circuits which are detectable as to location.

Tokarz, Richard D. (West Richland, WA)

1983-01-01T23:59:59.000Z

52

Higher Order Contributions to the 21 cm Power Spectrum  

E-Print Network (OSTI)

We consider the contribution of 3rd and 4th order terms to the power spectrum of 21 cm brightness temperature fluctuations during the epoch of reionization, which arise because the 21 cm brightness temperature involves a product of the hydrogenic neutral fraction and the gas density. The 3rd order terms vanish for Gaussian random fields, and have been previously neglected or ignored. We measure these higher order terms from radiative transfer simulations and estimate them using cosmological perturbation theory. In our simulated models, the higher order terms are significant: neglecting them leads to a >~100% error in 21 cm power spectrum predictions on scales of k >~ 1 Mpc^{-1} when the neutral fraction is ~0.5. The higher order terms have a simple physical interpretation. On small scales they are produced by gravitational mode coupling. Small scale structure grows more readily in large-scale overdense regions, but the same regions tend to be ionized and hence do not contribute to the 21 cm signal. This acts to suppress the influence of non-linear density fluctuations and the small-scale amplitude of the 21 cm power spectrum. These results modify earlier intuition that the 21 cm power spectrum simply traces the density power spectrum on scales smaller than that of a typical bubble, and imply that small scale measurements contain more information about the nature of the ionizing sources than previously believed. On large scales, higher order moments are not directly related to gravity. They are non-zero because over-dense regions tend to ionize first and are important in magnitude at late times owing to the large fluctuations in the neutral fraction. (Abridged)

Adam Lidz; Oliver Zahn; Matthew McQuinn; Matias Zaldarriaga; Suvendra Dutta; Lars Hernquist

2006-10-02T23:59:59.000Z

53

Temperature discovery search  

Science Conference Proceedings (OSTI)

Temperature Discovery Search (TDS) is a new minimax-based game tree search method designed to compute or approximate the temperature of a combinatorial game. TDS is based on the concept of an enriched environment, where a combinatorial game G ... Keywords: ?? algorithm, amazons, combinatorial games, go, temperature discovery search

Martin Müller; Markus Enzenberger; Jonathan Schaeffer

2004-07-01T23:59:59.000Z

54

Winter Morning Air Temperature  

Science Conference Proceedings (OSTI)

Results of temperature measurements, which may be applied to inference of winter temperatures in data-sparse areas, are presented. The morning air temperatures during three winters were measured at 80 places in a 10 km × 30 km area along the ...

A. Hogan; M. Ferrick

1997-01-01T23:59:59.000Z

55

High temperature sensor  

DOE Patents (OSTI)

A high temperature sensor includes a pair of electrical conductors separated by a mass of electrical insulating material. The insulating material has a measurable resistivity within the sensor that changes in relation to the temperature of the insulating material within a high temperature range (1,000 to 2,000 K.). When required, the sensor can be encased within a ceramic protective coating.

Tokarz, Richard D. (West Richland, WA)

1982-01-01T23:59:59.000Z

56

Short wavelength ion temperature gradient turbulence  

Science Conference Proceedings (OSTI)

The ion temperature gradient (ITG) mode in the high wavenumber regime (k{sub y}{rho}{sub s}>1), referred to as short wavelength ion temperature gradient mode (SWITG) is studied using the nonlinear gyrokinetic electromagnetic code GENE. It is shown that, although the SWITG mode may be linearly more unstable than the standard long wavelength (k{sub y}{rho}{sub s}<1) ITG mode, nonlinearly its contribution to the total thermal ion heat transport is found to be low. We interpret this as resulting from an increased zonal flow shearing effect on the SWITG mode suppression.

Chowdhury, J.; Ganesh, R. [Institute for Plasma Research, Bhat, Gandhinagar (India); Brunner, S.; Lapillonne, X.; Villard, L. [CRPP, Association EURATOM-Confederation Suisse, EPFL, 1015 Lausanne (Switzerland); Jenko, F. [Max-Planck-Institut fuer Plasmaphysik Boltzmannstr. 2, D-85748 Garching (Germany)

2012-10-15T23:59:59.000Z

57

General Relativistic Contributions in Transformation Optics  

E-Print Network (OSTI)

One potentially realistic specification for devices designed with transformation optics is that they operate with high precision in curved space-time, such as Earth orbit. This raises the question of what, if any, role does space-time curvature play in determining transformation media? Transformation optics has been based on a three-vector representation of Maxwell's equations in flat Minkowski space-time. I discuss a completely covariant, manifestly four-dimensional approach that enables transformations in arbitrary space-times, and demonstrate this approach for stable circular orbits in the spherically symmetric Schwarzschild geometry. Finally, I estimate the magnitude of curvature induced contributions to satellite-borne transformation media in Earth orbit and comment on the level of precision required for metamaterial fabrication before such contributions become important.

Robert T. Thompson

2011-02-08T23:59:59.000Z

58

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module (20) comprised of a series of solar cells (22) having a thermally activated switch (24) connected in parallel with several of the cells (22). The photovoltaic module (20) is adapted to charge conventional batteries having a temperature coefficient (TC) differing from the temperature coefficient (TC) of the module (20). The calibration temperatures of the switches (24) are chosen whereby the colder the ambient temperature for the module (20), the more switches that are on and form a closed circuit to short the associated solar cells (22). By shorting some of the solar cells (22) as the ambient temperature decreases, the battery being charged by the module (20) is not excessively overcharged at lower temperatures. PV module (20) is an integrated solution that is reliable and inexpensive.

Mosher, Dan Michael (Plano, TX)

1997-11-18T23:59:59.000Z

59

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module comprises a series of solar cells having a thermally activated switch connected in parallel with several of the cells. The photovoltaic module is adapted to charge conventional batteries having a temperature coefficient differing from the temperature coefficient of the module. The calibration temperatures of the switches are chosen whereby the colder the ambient temperature for the module, the more switches that are on and form a closed circuit to short the associated solar cells. By shorting some of the solar cells as the ambient temperature decreases, the battery being charged by the module is not excessively overcharged at lower temperatures. PV module is an integrated solution that is reliable and inexpensive. 2 figs.

Mosher, D.M.

1997-11-18T23:59:59.000Z

60

Automatic temperature control  

Science Conference Proceedings (OSTI)

An automatic temperature control system is described for maintaining a preset temperature in an enclosed space in a building, comprising: heating and cooling means for conditioning the air in the enclosed space to maintain the preset temperature; exterior thermostat means outside the building for sensing ambient exterior temperature levels; interior thermostat means in the enclosed space, preset to the preset temperature to be maintained and connected with the heating and cooling means to energize the means for heating or cooling, as appropriate, when the preset temperature is reached; means defining a heat sink containing a volume of air heated by solar radiation, the volume of the heat sink being such that the temperature level therein is not affected by minor or temporary ambient temperature fluctuations; and heat sink thermostat means in the heat sink sensing the temperature in the heat sink, the heat sink thermostat means being connected in tandem with the exterior thermostat means and operative with the exterior thermostat means to switch the interior thermostat means to either a first readiness state for heating or a second readiness state for cooling, depending upon which mode is indicated by both the exterior and heat sink thermostat means, whereby the system automatically switches between heating and cooling, as required, in response to a comparison of exterior and heat sink temperatures.

Sheridan, J.P.

1986-07-22T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

EM Contributes Expertise to Comprehensive Resource on Managing...  

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

Contributes Expertise to Comprehensive Resource on Managing Nuclear Projects EM Contributes Expertise to Comprehensive Resource on Managing Nuclear Projects October 30, 2013 -...

62

EM Contributes Expertise to Comprehensive Resource on Managing...  

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

EM Contributes Expertise to Comprehensive Resource on Managing Nuclear Projects EM Contributes Expertise to Comprehensive Resource on Managing Nuclear Projects October 30, 2013 -...

63

Daily Temperature Lag  

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

Daily Temperature Lag Daily Temperature Lag Name: Shyammayi Status: teacher Grade: K-2 Country: Mauritius Date: Summer 2011 Question: At what time of the day is the temperature hottest? At what time of the day is the temperature coldest? Replies: In general, the hottest part of the day is late afternoon. The sun has passed its peak in the sky but still heats the Earth up until very late in the afternoon. The lowest temperatures are around dawn. Earth has had all night to get rid of the day's heat by radiating it into space. After sunrise, temperatures begin to climb. This can be changed by local storms, sea breezes or mountain breezes and even monsoon winds. Hope this helps. R. W. "Bob" Avakian Instructor Arts and Sciences/CRC Oklahoma State Univ. Inst. of Technology Shyammayi

64

Automatic temperature adjustment apparatus  

DOE Patents (OSTI)

An apparatus for increasing the efficiency of a conventional central space heating system is disclosed. The temperature of a fluid heating medium is adjusted based on a measurement of the external temperature, and a system parameter. The system parameter is periodically modified based on a closed loop process that monitors the operation of the heating system. This closed loop process provides a heating medium temperature value that is very near the optimum for energy efficiency.

Chaplin, James E. (66 Overlook Rd., Bloomingdale, NJ 07403)

1985-01-01T23:59:59.000Z

65

High-temperature sensor  

DOE Patents (OSTI)

A high temperature sensor is described which includes a pair of electrical conductors separated by a mass of electrical insulating material. The insulating material has a measurable resistivity within the sensor that changes in relation to the temperature of the insulating material within a high temperature range (1000 to 2000/sup 0/K). When required, the sensor can be encased within a ceramic protective coating.

Not Available

1981-01-29T23:59:59.000Z

66

High temperature refrigerator  

SciTech Connect

A high temperature magnetic refrigerator which uses a Stirling-like cycle in which rotating magnetic working material is heated in zero field and adiabatically magnetized, cooled in high field, then adiabatically demagnetized. During this cycle said working material is in heat exchange with a pumped fluid which absorbs heat from a low temperature heat source and deposits heat in a high temperature reservoir. The magnetic refrigeration cycle operates at an efficiency 70% of Carnot.

Steyert, Jr., William A. (Los Alamos, NM)

1978-01-01T23:59:59.000Z

67

External vs. body temperature  

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

External vs. body temperature External vs. body temperature Name: jacqui Location: N/A Country: N/A Date: N/A Question: If one's internal body temperature is approximately 98.6, WHY when the external temperature is 98.6 do we feel hot? Since both temperatures are "balanced", shouldn't we feel comfortable? I am assuming here that humidity levels are controlled, and play no factor in the external temperature. Replies: First of all, skin temperature is lower than 98.6F; 98.6F is internal body temperature, so air at 98.6F is hotter than skin. But more important, it is the nervous system, and the cells in your skin that your brain uses to detect temperature that determine whether you "feel" hot or not, not whether the air is hotter than your skin. These are set so that you feel hot when the air is actually colder than your skin. Why? They are probably set to make you feel hot whenever the air is warm enough so that your body has some trouble getting rid of the excess heat it produces through metabolism. This insures that you take some actions to help your body cool off. Like drinking cool water, or reducing exercise

68

Surface Temperature of IGUs  

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

117 117 Surface Temperatures of Insulated Glazing Units: Infrared Thermography Laboratory Measurements Brent T. Griffith, Daniel Türler, and Dariush Arasteh Building Technologies Program Environmental Energy Technologies Division Lawrence Berkeley National Laboratory University of California Berkeley, CA 94720 USA Fax: 510-486-6046, email: D_Arasteh@lbl.gov Abstract Data are presented for the distribution of surface temperatures on the warm-side surface of seven different insulated glazing units. Surface temperatures are measured using infrared thermography and an external referencing technique. This technique allows detailed mapping of surface temperatures that is non-intrusive. The glazings were placed between warm and cold environmental chambers that were operated at conditions

69

High Temperature Corrosion  

Science Conference Proceedings (OSTI)

Oct 18, 2010 ... Protective Coatings for Corrosion Resistance at High Temperatures: Vilupanur Ravi1; Thuan Nguyen1; Alexander Ly1; Kameron Harmon1; ...

70

Low temperature cryoprobe  

DOE Patents (OSTI)

A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperature of 77 degrees Kelvin.

Sungaila, Zenon F. (Orland Park, IL)

1989-01-01T23:59:59.000Z

71

Prompt muon contribution to the flux underwater  

E-Print Network (OSTI)

We present high energy spectra and zenith-angle distributions of the atmospheric muons computed for the depths of the locations of the underwater neutrino telescopes. We compare the calculations with the data obtained in the Baikal and the AMANDA muon experiments. The prompt muon contribution to the muon flux underwater due to recent perturbative QCD-based models of the charm production is expected to be observable at depths of the large underwater neutrino telescopes. This appears to be probable even at rather shallow depths (1-2 km), provided that the energy threshold for muon detection is raised above $\\sim 100$ TeV.

T. S. Sinegovskaya; S. I. Sinegovsky

2000-07-21T23:59:59.000Z

72

Impaired Proteostasis Contributes to Renal Tubular  

E-Print Network (OSTI)

Protein conformational disorders are associated with the appearance, persistence, accumulation, and misprocessing of aberrant proteins in the cell. The etiology of renal tubular dysgenesis (RTD) is linked to mutations in the angiotensinconverting enzyme (ACE). Here, we report the identification of a novel ACE mutation (Q1069R) in an RTD patient. ACE Q1069R is found sequestered in the endoplasmic reticulum and is also subject to increased proteasomal degradation, preventing its transport to the cell surface and extracellular fluids. Modulation of cellular proteostasis by temperature shift causes an extension in the processing time and trafficking of ACE Q1069R resulting in partial rescue of the protein processing defect and an increase in plasma membrane levels. In addition, we found that temperature shifting causes the ACE Q1069R protein to be secreted in an active state, suggesting that the mutation does not affect the enzyme’s catalytic

Rita Machado De Oliveira; Zrinka Marijanovic; Filipe Carvalho; Gabriel Miltenberger Miltényi; Estevão Matos; Ra Tenreiro; Sónia Oliveira; Francisco Javier Enguita; Rosário Stone; Fleming Outeiro

2011-01-01T23:59:59.000Z

73

Finite temperature Casimir effect for graphene  

E-Print Network (OSTI)

We adopt the Dirac model for quasiparticles in graphene and calculate the finite temperature Casimir interaction between a suspended graphene layer and a parallel conducting surface. We find that at high temperature the Casimir interaction in such system is just one half of that for two ideal conductors separated by the same distance. In this limit single graphene layer behaves exactly as a Drude metal. In particular, the contribution of the TE mode is suppressed, while one of the TM mode saturates the ideal metal value. Behaviour of the Casimir interaction for intermediate temperatures and separations accessible for an experiment is studied in some detail. We also find an interesting interplay between two fundamental constants of graphene physics: the fine structure constant and the Fermi velocity.

Ignat V. Fialkovsky; Valery N. Marachevsky; Dmitri V. Vassilevich

2011-02-09T23:59:59.000Z

74

Fiber optic temperature sensor  

SciTech Connect

Our fiber optic temperature measurement sensor and system is a major improvement over methods currently in use in most industrial processes, and it delivers all of the attributes required simplicity, accuracy, and cost efficiency-to help improve all of these processes. Because temperature is a basic physical attribute of nearly every industrial and commercial process, our system can eventually result in significant improvements in nearly every industrial and commercial process. Many finished goods, and the materials that go into them, are critically dependent on the temperature. The better the temperature measurement, the better quality the goods will be and the more economically they can be produced. The production and transmission of energy requires the monitoring of temperature in motors, circuit breakers, power generating plants, and transmission line equipment. The more reliable and robust the methods for measuring these temperature, the more available, stable, and affordable the supply of energy will become. The world is increasingly realizing the threats to health and safety of toxic or otherwise undesirable by products of the industrial economy in the environment. Cleanup of such contamination often depends on techniques that require the constant monitoring of temperature in extremely hazardous environments, which can damage most conventional temperature sensors and which are dangerous for operating personnel. Our system makes such monitoring safer and more economical.

Rabold, D.

1995-12-01T23:59:59.000Z

75

Electrolysis – High Temperature – Hydrogen  

INL has developed a high-temperature process the utilizes solid oxide fuel cells that are operated in the electrolytic mode. The first process includes combining a high-temperature heat source (e.g. nuclear reactor) with a hydrogen production facility ...

76

Temperature stratified turbine compressors  

SciTech Connect

A method and apparatus for improving the efficiency of a compressor of a gas turbine engine is disclosed. The inlet gas entering the compressor is stratified into two portions of different temperatures. The higher temperature gas is introduced adjacent the outer tipe of the compressor blades to reduce the relative Mach number of the flow at the area.

Earnest, E.R.; Passinos, B.

1979-01-09T23:59:59.000Z

77

High Temperature ESP Monitoring  

SciTech Connect

The objective of the High Temperature ESP Monitoring project was to develop a downhole monitoring system to be used in wells with bottom hole well temperatures up to 300°C for measuring motor temperature, formation pressure, and formation temperature. These measurements are used to monitor the health of the ESP motor, to track the downhole operating conditions, and to optimize the pump operation. A 220 ºC based High Temperature ESP Monitoring system was commercially released for sale with Schlumberger ESP motors April of 2011 and a 250 ºC system with will be commercially released at the end of Q2 2011. The measurement system is now fully qualified, except for the sensor, at 300 °C.

Jack Booker; Brindesh Dhruva

2011-06-20T23:59:59.000Z

78

REALIZING PRESSURE, TEMPERATURE, AND LENGTH ...  

Science Conference Proceedings (OSTI)

... The basic concept behind the proposed apparatus is illustrated in ... at room temperature, requiring realization of thermodynamic temperature near 23 ...

2013-07-10T23:59:59.000Z

79

Glenn T. Seaborg - Contributions to Advancing Science  

Office of Scientific and Technical Information (OSTI)

T. Seaborg T. Seaborg Contributions to Advancing Science Resources with Additional Information · Patents Glenn T. Seaborg Courtesy of Lawrence Berkeley National Laboratory "This is the greatest honor ever bestowed upon me-even better, I think, than winning the Nobel Prize." - Glenn T. Seaborg, about the naming of Element 106 seaborgium, the first time an element was named for a living person. Glenn T. Seaborg was born April 19, 1912, in Ishpeming, Michigan. He was educated at the University of California (UC), Los Angeles (B.A.) and the University of California, Berkeley (Ph.D.). "His life-long association with the Lawrence Berkeley National Laboratory [LBNL] began in 1934 when, as a graduate student, he went to work at the UC Radiation Laboratory (the forerunner to LBNL). He joined the UC Berkeley faculty in 1939 and, following his time at the AEC [Atomic Energy Commission] helm, returned to Berkeley where he continued his search for new elements and isotopes." 1

80

Structural Features that Contribute to Market Power  

E-Print Network (OSTI)

In this paper we report an experiment that examines a primary concern of policy makers: how a structural feature of electric power networks can contribute to the exercise of market power by well-positioned players in deregulated markets. One such feature is the distribution of ownership of a given set of generating assets. For example, two large firms could be allocated baseload and intermediate generators such that either firm would be willing to withhold unilaterally the capacity of its intermediate generators from the market, to benefit from the supra-competitive prices which would result from only selling its baseload units. Conversely, ownership of the some of the intermediate generators from each of these firms could be transferred to two other firms, so that no one firm can unilaterally restrict output to spawn supra-competitive prices.

Stephen J. Rassenti; Vernon L. Smith; Bart J. Wilson

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Fever and Body Temperature  

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

Fever and Body Temperature Fever and Body Temperature Name: Ying Location: N/A Country: N/A Date: N/A Question: Hi, I have a few questions that I want to ask you: Why does your body chose to raise its temperature when you have a fever? Replies: Most bacteria and viruses that live in your body grow best at body temperature. They don't grow very well when the temperature is raised. When there are bacteria in your body they give off chemicals that signal white blood cells to come to try to eat them and also affect an area in your brain called the hypothalamus. This part of the brain controls alot of the automatic functions in your body and is also the site of your body's "thermostat". When the chemicals from the bacteria circulate through the hypothalamus it sets the body's temperature higher. This is called a fever. Your body kind of tries to "sweat out" the bacteria and kill them with a higher temperature. Some scientists question whether trying to bring down a fever is the best thing to do. If it isn't too high, some believe we should just let it work

82

Maintaining body temperature  

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

Maintaining body temperature Maintaining body temperature Name: Jeff Location: N/A Country: N/A Date: N/A Question: What keeps the human body at a constant temperature of 98.6? Replies: Maintaining body temperature is very complex. It also takes a lot of energy. About 80% of the energy from the food you eat goes to maintaining body temperature. Basically, the chemical reactions of metabolism of stored food, especially fats, generate heat as a by product. This heat warms the body. The brain reads temperature and controls to some extent the rate of this metabolism. There are also many other mechanisms triggered by the brain to keep the core of your body warm, even if the periphery (skin) is cold. Blood vessels to the fingers and toes constrict, so that the cold air doesn't cool the blood too much, so that cooled blood doesn't cool down the heart and brain when it returns. In severe cases, your body will sacrifice a finger or a toe to keep you from dying of cold core temperature (frostbite: it saves your life!). Also the brain can order a lot of muscles to contract rapidly. This generates a lot of heat quickly, a response called shivering. There's much more to this exciting field of research.

83

High Temperature Capacitor Development  

Science Conference Proceedings (OSTI)

The absence of high-temperature electronics is an obstacle to the development of untapped energy resources (deep oil, gas and geothermal). US natural gas consumption is projected to grow from 22 trillion cubic feet per year (tcf) in 1999 to 34 tcf in 2020. Cumulatively this is 607 tcf of consumption by 2020, while recoverable reserves using current technology are 177 tcf. A significant portion of this shortfall may be met by tapping deep gas reservoirs. Tapping these reservoirs represents a significant technical challenge. At these depths, temperatures and pressures are very high and may require penetrating very hard rock. Logistics of supporting 6.1 km (20,000 ft) drill strings and the drilling processes are complex and expensive. At these depths up to 50% of the total drilling cost may be in the last 10% of the well depth. Thus, as wells go deeper it is increasingly important that drillers are able to monitor conditions down-hole such as temperature, pressure, heading, etc. Commercial off-the-shelf electronics are not specified to meet these operating conditions. This is due to problems associated with all aspects of the electronics including the resistors and capacitors. With respect to capacitors, increasing temperature often significantly changes capacitance because of the strong temperature dependence of the dielectric constant. Higher temperatures also affect the equivalent series resistance (ESR). High-temperature capacitors usually have low capacitance values because of these dielectric effects and because packages are kept small to prevent mechanical breakage caused by thermal stresses. Electrolytic capacitors do not operate at temperatures above 150oC due to dielectric breakdown. The development of high-temperature capacitors to be used in a high-pressure high-temperature (HPHT) drilling environment was investigated. These capacitors were based on a previously developed high-voltage hybridized capacitor developed at Giner, Inc. in conjunction with a unique high-temperature electrolyte developed during the course of the program. During this program the feasibility of operating a high voltage hybridized capacitor at 230oC was demonstrated. Capacitor specifications were established in conjunction with potential capacitor users. A method to allow for capacitor operation at both ambient and elevated temperatures was demonstrated. The program was terminated prior to moving into Phase II due to a lack of cost-sharing funds.

John Kosek

2009-06-30T23:59:59.000Z

84

Moderate Temperature | Open Energy Information  

Open Energy Info (EERE)

Moderate Temperature Moderate Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Moderate Temperature Dictionary.png Moderate Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 190°C and 230°C is considered by Sanyal to be "moderate temperature." "The next higher resource temperature limit is chosen as 230°C, which is lower than the minimum initial resource temperature encountered in

85

EIA Energy Information Administration  

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

by Saturday average temperatures were 9 degrees above normal. With a 1-day lag, spot market prices followed the November futures price downward and continued this trend through...

86

ARM - Measurement - Atmospheric temperature  

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

temperature temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric temperature The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

87

ARM - Measurement - Virtual temperature  

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

govMeasurementsVirtual temperature govMeasurementsVirtual temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Virtual temperature The virtual temperature Tv = T(1 + rv/{epsilon}), where rv is the mixing ratio, and {epsilon} is the ratio of the gas constants of air and water vapor ( 0.622). Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems MWRP : Microwave Radiometer Profiler RWP : Radar Wind Profiler

88

Complete Urban Surface Temperatures  

Science Conference Proceedings (OSTI)

An observation program using ground and airborne thermal infrared radiometers is used to estimate the surface temperature of urban areas, taking into account the total active surface area. The authors call this the complete urban surface ...

J. A. Voogt; T. R. Oke

1997-09-01T23:59:59.000Z

89

Temperature | Open Energy Information  

Open Energy Info (EERE)

Showing 7 properties using this type. A Property:AvgGeoFluidTemp C Property:Combustion Intake Air Temperature F Property:FirstWellTemp G Property:GeofluidTemp M...

90

Low temperature cryoprobe  

DOE Patents (OSTI)

A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperatures of 77 degrees Kelvin, is discussed. 3 figs.

Sungaila, Z.F.

1988-04-12T23:59:59.000Z

91

Temperature-aware microarchitecture  

Science Conference Proceedings (OSTI)

With power density and hence cooling costs rising exponentially, processor packaging can no longer be designed for the worst case, and there is an urgent need for runtime processor-level techniques that can regulate operating temperature when the package's ...

Kevin Skadron; Mircea R. Stan; Wei Huang; Sivakumar Velusamy; Karthik Sankaranarayanan; David Tarjan

2003-06-01T23:59:59.000Z

92

High Temperature | Open Energy Information  

Open Energy Info (EERE)

Temperature Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: High Temperature Dictionary.png High Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 230°C and 300°C is considered by Sanyal to be "high temperature." "Above a temperature level of 230°C, the reservoir would be expected to become two-phase at some point during exploitation. The next higher

93

Estimates of unresolved point sources contribution to WMAP 5  

E-Print Network (OSTI)

We present an alternative estimate of the unresolved point source contribution to the WMAP temperature power spectrum based on current knowledge of sources from radio surveys in the 1.4-90 GHz range. We implement a stochastic extrapolation of radio point sources in the NRAO-VLA Sky Survey (NVSS) catalog, from the original 1.4 GHz to the ~ 100 GHz frequency range relevant for CMB experiments. With a bootstrap approach, we generate an ensemble of realizations that provides the probability distribution for the flux of each NVSS source at the final frequency. The predicted source counts agree with WMAP results for S > 1 Jy and the corresponding sky maps correlate with WMAP observed maps in Q-, V- and W- bands, for sources with flux S > 0.2 Jy. The low-frequency radio surveys found a steeper frequency dependence for sources just below the WMAP nominal threshold than the one estimated by the WMAP team. This feature is present in our simulations and translates into a shift of 0.3-0.4 \\sigma in the estimated value of...

Colombo, Loris P L

2010-01-01T23:59:59.000Z

94

Rock mechanics contributions from defense programs  

SciTech Connect

An attempt is made at illustrating the many contributions to rock mechanics from US defense programs, over the past 30-plus years. Large advances have been achieved in the technology-base area covering instrumentation, material properties, physical modeling, constitutive relations and numerical simulations. In the applications field, much progress has been made in understanding and being able to predict rock mass behavior related to underground explosions, cratering, projectile penetration, and defense nuclear waste storage. All these activities stand on their own merit as benefits to national security. But their impact is even broader, because they have found widespread applications in the non-defense sector; to name a few: the prediction of the response of underground structures to major earthquakes, the physics of the earth`s interior at great depths, instrumentation for monitoring mine blasting, thermo-mechanical instrumentation useful for civilian nuclear waste repositories, dynamic properties of earthquake faults, and transient large-strain numerical modeling of geological processes, such as diapirism. There is not pretense that this summary is exhaustive. It is meant to highlight success stories representative of DOE and DOD geotechnical activities, and to point to remaining challenges.

Heuze, F.E.

1992-02-01T23:59:59.000Z

95

Human error contribution to nuclear materials-handling events  

E-Print Network (OSTI)

This thesis analyzes a sample of 15 fuel-handling events from the past ten years at commercial nuclear reactors with significant human error contributions in order to detail the contribution of human error to fuel-handling ...

Sutton, Bradley (Bradley Jordan)

2007-01-01T23:59:59.000Z

96

Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Temperature Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Low Temperature Dictionary.png Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 150°C and 190°C is considered by Sanyal to be "low temperature." "The mobile fluid phase in these reservoirs is liquid water. A number of commercial power projects have been operated over the last two decades

97

NIST Contributions to Smart Grid Highlighted in White House ...  

Science Conference Proceedings (OSTI)

NIST Contributions to Smart Grid Highlighted in White House Report, Event. From NIST Tech Beat: June 13, 2011. ...

2011-06-21T23:59:59.000Z

98

Web Site Highlights 50 Years of NIST Contributions to Laser ...  

Science Conference Proceedings (OSTI)

Web Site Highlights 50 Years of NIST Contributions to Laser Science. For Immediate Release: December 15, 2009. ...

2010-10-08T23:59:59.000Z

99

High temperature thermometric phosphors  

SciTech Connect

A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.y) wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.

Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN); Gillies, George T. (Earlysville, VA)

1999-03-23T23:59:59.000Z

100

Temperature initiated passive cooling system  

DOE Patents (OSTI)

A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature.

Forsberg, Charles W. (Oak Ridge, TN)

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Temperature initiated passive cooling system  

DOE Patents (OSTI)

A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature. 1 fig.

Forsberg, C.W.

1994-11-01T23:59:59.000Z

102

hepph/0405158 3.1 Hard contribution 7  

E-Print Network (OSTI)

contributions, namely terms in the soft part that do not diverge in the limit # ### ## and terms in the hard; ######## ## ############ # ## ### ##### ### ### ############ # ## ####### ##### ########## #### # 3.1 Hard contribution 7 3.2 Soft contribution 12 3.3 Total thermal production rate 14 superpartners|the axino and the saxion|arise, which are not part of the standard spectrum of the minimally

103

Feed me: motivating newcomer contribution in social network sites  

Science Conference Proceedings (OSTI)

Social networking sites (SNS) are only as good as the content their users share. Therefore, designers of SNS seek to improve the overall user experience by encouraging members to contribute more content. However, user motivations for contribution in ... Keywords: SNS, distribution, feedback, motivating contribution, online communities, production incentives, sharing, singling out, social learning, social network sites

Moira Burke; Cameron Marlow; Thomas Lento

2009-04-01T23:59:59.000Z

104

temperature | OpenEI  

Open Energy Info (EERE)

temperature temperature Dataset Summary Description Freedom Field is a not-for-profit organization formed to facilitate development and commercialization of renewable energy solutions. The organization has installed a variety of renewable energy generating technologies at their facility (located at Rock River Water Reclamation in Rockford, IL), with the intention of serving as a demonstration facility. The facility monitors data (at 5-minute intervals) from a weather station, 12.4 kW of PV panels (56 220-watt panels), a 10kW wind turbine (HAWT), a 1.2 kW wind turbine (VAWT), an absorption cooling system, and biogas burners. Source Freedom Field Date Released July 19th, 2011 (3 years ago) Date Updated Unknown Keywords biogas monitoring data PV radiance solar temperature

105

Free energy of Lorentz-violating QED at high temperature  

E-Print Network (OSTI)

In this paper we study the one- and two-loop contribution to the free energy in QED with the Lorentz symmetry breaking introduced via constant CPT-even Lorentz-breaking parameters at the high temperature limit. We find the impact of the Lorentz-violating term for the free energy and carry out a numerical estimation for the Lorentz-breaking parameter.

M. Gomes; T. Mariz; J. R. Nascimento; A. Yu. Petrov; A. F. Santos; A. J. da Silva

2009-10-23T23:59:59.000Z

106

Finite Temperature Aging Holography  

E-Print Network (OSTI)

We construct the gravity background which describes the dual field theory with aging invariance. We choose the decay modes of the bulk scalar field in the internal spectator direction to obtain the dissipative behavior of the boundary correlation functions of the dual scalar fields. In particular, the two-time correlation function at zero temperature has the characteristic features of the aging system: power law decay, broken time translation and dynamical scaling. We also construct the black hole backgrounds with asymptotic aging invariance. We extensively study characteristic behavior of the finite temperature two-point correlation function via analytic and numerical methods.

Seungjoon Hyun; Jaehoon Jeong; Bom Soo Kim

2011-08-29T23:59:59.000Z

107

Temperature determination using pyrometry  

DOE Patents (OSTI)

A method for determining the temperature of a surface upon which a coating is grown using optical pyrometry by correcting Kirchhoff's law for errors in the emissivity or reflectance measurements associated with the growth of the coating and subsequent changes in the surface thermal emission and heat transfer characteristics. By a calibration process that can be carried out in situ in the chamber where the coating process occurs, an error calibration parameter can be determined that allows more precise determination of the temperature of the surface using optical pyrometry systems. The calibration process needs only to be carried out when the physical characteristics of the coating chamber change.

Breiland, William G. (Albuquerque, NM); Gurary, Alexander I. (Bridgewater, NJ); Boguslavskiy, Vadim (Princeton, NJ)

2002-01-01T23:59:59.000Z

108

Fluorescent temperature sensor  

Science Conference Proceedings (OSTI)

The present invention is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A [Los Alamos, NM; Baker, Sheila N [Los Alamos, NM; McCleskey, T Mark [Los Alamos, NM

2009-03-03T23:59:59.000Z

109

Factors Influencing the Cold-Season Diurnal Temperature Range in the United States  

Science Conference Proceedings (OSTI)

This study examines the contributions of sunshine duration, snow cover extent, and the atmospheric circulation to variations of the cold-season diurnal temperature range (DTR) in eight regions of the contiguous United States. The goal of the ...

Imke Durre; John M. Wallace

2001-08-01T23:59:59.000Z

110

On the Signatures of Equatorial and Extratropical Wave Forcing in Tropical Tropopause Layer Temperatures  

Science Conference Proceedings (OSTI)

Temperatures in the tropical tropopause layer (TTL) play an important role in stratosphere–troposphere exchange and in the formation and maintenance of thin cirrus clouds. Many previous studies have examined the contributions of extratropical and ...

Kevin M. Grise; David W. J. Thompson

2013-04-01T23:59:59.000Z

111

Simulation of Microwave Brightness Temperatures of an Evolving Hailstorm at SSM/I Frequencies  

Science Conference Proceedings (OSTI)

A simulation of the appearance of an intense hailstorm in the passive microwave spectrum is conducted in order to characterize the vertical sources of radiation that contribute to the top-of-atmosphere microwave brightness temperatures (TB) which ...

Alberto Mugnai; Harry J. Cooper; Eric A. Smith; Gregory J. Tripoli

1990-01-01T23:59:59.000Z

112

Variability of Temperature in Wisconsin  

Science Conference Proceedings (OSTI)

Daily maximum and minimum temperatures since 1897 at three stations in Wisconsin are examined, and the hypothesis is tested that there is no association between interdiurnal or interannual temperature and either the local mean temperature or an ...

W. A. R. Brinkmann

1983-01-01T23:59:59.000Z

113

NNSA Celebrates the Contributions and Achievements of Women | National  

National Nuclear Security Administration (NNSA)

the Contributions and Achievements of Women | National the Contributions and Achievements of Women | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog NNSA Celebrates the Contributions and Achievements of Women Home > content > NNSA Celebrates the Contributions and Achievements of ... NNSA Celebrates the Contributions and Achievements of Women

114

Temperature differential detection device  

DOE Patents (OSTI)

A temperature differential detection device for detecting the temperature differential between predetermined portions of a container wall is disclosed as comprising a Wheatstone bridge circuit for detecting resistance imbalance with a first circuit branch having a first elongated wire element mounted in thermal contact with a predetermined portion of the container wall, a second circuit branch having a second elongated wire element mounted in thermal contact with a second predetermined portion of a container wall with the wire elements having a predetermined temperature-resistant coefficient, an indicator interconnected between the first and second branches remote from the container wall for detecting and indicating resistance imbalance between the first and second wire elements, and connector leads for electrically connecting the wire elements to the remote indicator in order to maintain the respective resistance value relationship between the first and second wire elements. The indicator is calibrated to indicate the detected resistance imbalance in terms of a temperature differential between the first and second wall portions.

Girling, Peter M. (Allentown, PA)

1986-01-01T23:59:59.000Z

115

Temperature differential detection device  

DOE Patents (OSTI)

A temperature differential detection device for detecting the temperature differential between predetermined portions of a container wall is disclosed as comprising a Wheatstone bridge circuit for detecting resistance imbalance with a first circuit branch having a first elongated wire element mounted in thermal contact with a predetermined portion of the container wall, a second circuit branch having a second elongated wire element mounted in thermal contact with a second predetermined portion of a container wall with the wire elements having a predetermined temperature-resistant coefficient, an indicator interconnected between the first and second branches remote from the container wall for detecting and indicating resistance imbalance between the first and second wire elements, and connector leads for electrically connecting the wire elements to the remote indicator in order to maintain the respective resistance value relationship between the first and second wire elements. The indicator is calibrated to indicate the detected resistance imbalance in terms of a temperature differential between the first and second wall portions. 2 figs.

Girling, P.M.

1986-04-22T23:59:59.000Z

116

Electron scattering by acceptor centers in p-Ag{sub 2}Te at low temperatures  

Science Conference Proceedings (OSTI)

Resonant electron scattering in p-Ag{sub 2}Te at acceptor concentrations N{sub a} < 4.2 x 10{sup 16} cm{sup -3} has been observed in the temperature range of 50-80 K. The contribution of the resonant scattering to the temperature dependences of the conductivity {sigma}(T) and thermopower {alpha}{sub 0}(T) has been calculated. It is shown that this contribution exceeds that of charge carrier scattering by acoustic phonons.

Aliev, F. F., E-mail: farzali@physics.ab.az; Jafarov, M. B.; Askerova, G. Z. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan); Gojaev, E. M. [Azerbaijan Technical University (Azerbaijan)

2010-08-15T23:59:59.000Z

117

Strangeness at high temperatures: from hadrons to quarks  

E-Print Network (OSTI)

Appropriate combinations of up to fourth order cumulants of net strangeness fluctuations and their correlations with net baryon number and electric charge fluctuations, obtained from lattice QCD calculations, have been used to probe the strangeness carrying degrees of freedom at high temperatures. For temperatures up to the chiral crossover separate contributions of strange mesons and baryons can be well described by an uncorrelated gas of hadrons. Such a description breaks down in the chiral crossover region, suggesting that the deconfinement of strangeness takes place at the chiral crossover. On the other hand, the strangeness carrying degrees of freedom inside the quark gluon plasma can be described by a weakly interacting gas of quarks only for temperatures larger than twice the chiral crossover temperature. In the intermediate temperature window these observables show considerably richer structures, indicative of the strongly interacting nature of the quark gluon plasma.

A. Bazavov; H. -T. Ding; P. Hegde; O. Kaczmarek; F. Karsch; E. Laermann; Y. Maezawa; Swagato Mukherjee; H. Ohno; P. Petreczky; C. Schmidt; S. Sharma; W. Soeldner; M. Wagner

2013-04-26T23:59:59.000Z

118

Ab-initio elastic and thermodynamic properties of high-temperature cubic intermetallics at finite temperatures  

E-Print Network (OSTI)

In thiswork we present the development of a method for the prediciton of finite temperature elastic and thermodynamic properties of cubic, non-magnetic unary and binary metals from first principles calculations. Vibrational, electronic and anharmonic contributions to the free energy are accounted for while magnetic effects are neglected. The method involves the construction of a free energy surface in volume/temperature space through the use of quasi-harmonic lattice dynamics. Additional strain energy calculations are performed and fit to the derived thermal expansion to present the temperature dependence of single crystal elastic constants. The methods are developed within the framework of density functional theory, lattice dynamics, and finite elasticity. The model is first developed for FCC aluminum and BCC tungsten which demonstrate the validity of the model as well as some of the limitations arising from the approximations made such as the effects of intrinsic anharmonicity. The same procedure is then applied to the B2 systems NiAl, RuAl and IrAl which are considred for high temperature applications. Overall there is excellent correlation between the calculated properties and experimentally tabulated values. Dynamic methods for the prediction of temperature dependent properties are also introduced and a groundwork is laid for future development of a robust method.

Williams, Michael Eric

2008-05-01T23:59:59.000Z

119

Metal Recovery from Industrial Solid Waste – Contribution to ...  

Science Conference Proceedings (OSTI)

ISASMELT™ for Recycling of Valuable Elements Contributing to a More Sustainable Society · Leaching of Uranium and Vanadium from Korean Domestic Ore.

120

NETL: Health Effects - Source Contributions to PM Health Effects...  

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

Source Contributions to PM Health Effects: DOE Office of Fossil Energy Analysis DOE's Division of Planning and Environmental Analysis, within its Office of Fossil Energy, Office of...

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat...  

Open Energy Info (EERE)

Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat Flow In The Precambrian And Younger Silicic Rocks Of The Zuni And Florida Mountains, New Mexico (Usa) Jump to:...

122

The polarization contribution to the free energy of hydration  

Science Conference Proceedings (OSTI)

The magnitude of the polarization contribution to the free energy of hydration is analyzed using several approaches. Monte Carlo quantum mechanical?molecular mechanical (MC?QM/MM)

Modesto Orozco; F. J. Luque; Darius Habibollahzadeh; Jiali Gao

1995-01-01T23:59:59.000Z

123

Deformation debris and their contribution to hindering dislocations  

Science Conference Proceedings (OSTI)

Presentation Title, Deformation debris and their contribution to hindering dislocations -- atomistic simulations in aluminum. Author(s), Hao Wang, Dongsheng Xu, ...

124

Heat wave contributes to higher summer electricity demand in...  

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

contributes to higher summer electricity demand in the Northeast In its new energy forecast, the U.S. Energy Information Administration expects summer retail electricity prices...

125

How Thin Film Processing Can Contribute to Understanding the ...  

Science Conference Proceedings (OSTI)

Presentation Title, How Thin Film Processing Can Contribute to Understanding the Materials Science of the MAX Phases. Author(s), Per Eklund, Ulf Jansson, ...

126

High Temperature Superconductivity Partners | Department of Energy  

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

High Temperature Superconductivity Partners High Temperature Superconductivity Partners Map showing DOE's partnersstakeholders in the High Temperature Superconductivity Program...

127

Effects of Temperature  

Science Conference Proceedings (OSTI)

Table 1   Typical elevated temperatures in engineering applications...825â??975 0.45â??0.50 Pressure vessels and piping in nuclear reactors 316 stainless steel 650â??750 0.35â??0.40 Reactor skirts in nuclear reactors 316 stainless steel 850â??950 0.45â??0.55 Gas turbine blades Nickel-base superalloys 775â??925 0.45â??0.60 Burner cans for gas turbine engines Oxide dispersion-strengthened...

128

Thermionic Converter Temperature Controller  

DOE Patents (OSTI)

A method and apparatus for controlling the temperature of a thermionic reactor over a wide range of operating power, including a thermionic reactor having a plurality of integral cesium reservoirs, a honeycomb material disposed about the reactor which has a plurality of separated cavities, a solid sheath disposed about the honeycomb material and having an opening therein communicating with the honeycomb material and cavities thereof, and a shell disposed about the sheath for creating a coolant annulus therewith so that the coolant in the annulus may fill the cavities and permit nucleate boiling during the operation of the reactor.

Shaner,B. J.; Wolf, Joseph H.; Johnson, Robert G. R.

1999-08-23T23:59:59.000Z

129

Thermionic converter temperature controller  

DOE Patents (OSTI)

A method and apparatus for controlling the temperature of a thermionic reactor over a wide range of operating power, including a thermionic reactor having a plurality of integral cesium reservoirs, a honeycomb material disposed about the reactor which has a plurality of separated cavities, a solid sheath disposed about the honeycomb material and having an opening therein communicating with the honeycomb material and cavities thereof, and a shell disposed about the sheath for creating a coolant annulus therewith so that the coolant in the annulus may fill the cavities and permit nucleate boiling during the operation of the reactor.

Shaner, Benjamin J. (McMurray, PA); Wolf, Joseph H. (Pittsburgh, PA); Johnson, Robert G. R. (Trafford, PA)

2001-04-24T23:59:59.000Z

130

Atom Probe Contribution to the Characterization of Cigse Grain ...  

Science Conference Proceedings (OSTI)

... Active Titania-Based Nanoparticles for Composite Propellant Combustion ... of Novel Nanostructured Electrolytes for Low Temperature Solid Oxide Fuel Cells ...

131

Contribution to the Energy Optimization in the Pyrometallurgical ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2012 TMS Annual Meeting & Exhibition. Symposium , 3rd International Symposium on High Temperature Metallurgical Processing.

132

Estimating Winter Design Temperatures from Daily Minimum Temperatures  

Science Conference Proceedings (OSTI)

A methodology has been developed to estimate winter design temperatures (temperatures exceeded a specific number of hours during the December through February winter season-an important design parameter in building construction) from synthetic ...

Nolan J. Doesken; Thomas B. McKee

1983-10-01T23:59:59.000Z

133

Sensitivity of Tropical Tropospheric Temperature to Sea Surface Temperature Forcing  

Science Conference Proceedings (OSTI)

During El Niño, there are substantial tropospheric temperature anomalies across the entire tropical belt associated with the warming of sea surface temperatures (SSTs) in the central and eastern Pacific. The quasi-equilibrium tropical circulation ...

Hui Su; J. David Neelin; Joyce E. Meyerson

2003-05-01T23:59:59.000Z

134

Field strength correlators in the instanton gas: The importance of the two-instanton contribution  

E-Print Network (OSTI)

The field strength correlators at zero temperature are semi-classically evaluated fitting the random instanton liquid model to lattice data for quenched SU(3) lattice gauge theory. We restrict ourselves to the lowest order in an instanton density expansion necessary to explain the difference between transverse and longitudinal correlation functions. In the instanton-instanton and instanton-antiinstanton contributions the Schwinger line factors neglected in a previous analysis are numerically taken into account in a weighted Monte Carlo evaluation. This leads to different estimates for instanton size and density. A reasonable description of the correlators within the intermediate range from 0.4 fm to 1 fm is obtained.

E. -M. Ilgenfritz; B. V. Martemyanov; M. Muller-Preussker

2000-02-24T23:59:59.000Z

135

EM Highlights Advisory Board Contributions | Department of Energy  

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

Highlights Advisory Board Contributions Highlights Advisory Board Contributions EM Highlights Advisory Board Contributions March 5, 2013 - 12:00pm Addthis Participants in the session on Advisory Board contributions to the EM program included, left to right, Karen Guevara, Savannah River Site; Ralph Phelps, Northern New Mexico Citizens’ Advisory Board; Cate Alexander, EM; Eric Roberts, EHI Consultants; Dave Adler, Oak Ridge site; and Ralph Young, Paducah Citizens Advisory Board. Participants in the session on Advisory Board contributions to the EM program included, left to right, Karen Guevara, Savannah River Site; Ralph Phelps, Northern New Mexico Citizens' Advisory Board; Cate Alexander, EM; Eric Roberts, EHI Consultants; Dave Adler, Oak Ridge site; and Ralph Young, Paducah Citizens Advisory Board.

136

EM Highlights Advisory Board Contributions | Department of Energy  

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

EM Highlights Advisory Board Contributions EM Highlights Advisory Board Contributions EM Highlights Advisory Board Contributions March 5, 2013 - 12:00pm Addthis Participants in the session on Advisory Board contributions to the EM program included, left to right, Karen Guevara, Savannah River Site; Ralph Phelps, Northern New Mexico Citizens’ Advisory Board; Cate Alexander, EM; Eric Roberts, EHI Consultants; Dave Adler, Oak Ridge site; and Ralph Young, Paducah Citizens Advisory Board. Participants in the session on Advisory Board contributions to the EM program included, left to right, Karen Guevara, Savannah River Site; Ralph Phelps, Northern New Mexico Citizens' Advisory Board; Cate Alexander, EM; Eric Roberts, EHI Consultants; Dave Adler, Oak Ridge site; and Ralph Young, Paducah Citizens Advisory Board.

137

Monthly Temperature Observations for Uganda  

Science Conference Proceedings (OSTI)

The International Surface Temperature Initiative is a worldwide effort to locate weather observations, digitize them for public access, and attach provenance to them. As part of that effort, this study sought documents of temperature observations ...

John R. Christy

2013-10-01T23:59:59.000Z

138

Low Temperature Proton Conductivity  

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

and and MEAs at Freezing Temperatures Thomas A. Zawodzinski, Jr. Case Western Reserve University Cleveland, Ohio 2 Freezing Fuel Cells: Impact on MEAS Below 0 o C *Transport processes/motions slow down: questions re: lower conductivity,water mobility etc *Residual water will have various physical effects in different portions of the MEA questions re: durability of components 3 3 'States' of Water in Proton Conductors ? Freezing (bulk), bound freezable, bound non freezable water states claimed based on DSC * Freezing water more mobile, allegedly important for high conductivity Analysis common for porous systems Does the presence of these states matter? Why? 4 'State of Water' in PEMs At T < 0 o C *'Liquid-like' water freezes *'Non-freezing' fraction: water of solvation at pore

139

Moored Observations of Precipitation Temperature  

Science Conference Proceedings (OSTI)

Direct observations of precipitation temperature were made from a surface buoy deployed for four months in the western Pacific warm pool. The observed rain droplet temperatures are equal to the wet-bulb temperature to within the measured wet-bulb ...

Steven P. Anderson; Alan Hinton; Robert A. Weller

1998-08-01T23:59:59.000Z

140

Battery system with temperature sensors  

SciTech Connect

A battery system to monitor temperature includes at least one cell with a temperature sensing device proximate the at least one cell. The battery system also includes a flexible member that holds the temperature sensor proximate to the at least one cell.

Wood, Steven J.; Trester, Dale B.

2012-11-13T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Bolometer for measurements on high-temperature plasmas  

SciTech Connect

A bolometer has been developed, based on a thin, die-cut platinum grid. It can survive high temperatures and the neutron and gamma radiation expected in the Toroidal Fusion Test Factor (TFTR). The platinum resistance is measured with a square-wave carrier system to minimize sensitivity to ambient electromagnetic interference. Electrical power fed back to the sensor holds its temperature constant and provides an output directly proportional to absorbed radiation power. With a bandwidth of 50 Hz the noise is equivalent to 100 ..mu..W/cm/sup 2/. Methods are described for dealing with the background effects expected to contribute to bolometer heating.

Schivell, J.; Renda, G.; Lowrance, J.; Hsuan, H.

1982-06-01T23:59:59.000Z

142

Minimum Temperatures, Diurnal Temperature Ranges, and Temperature Inversions in Limestone Sinkholes of Different Sizes and Shapes  

Science Conference Proceedings (OSTI)

Air temperature data from five enclosed limestone sinkholes of various sizes and shapes on the Hetzkogel Plateau near Lunz, Austria (1300 m MSL), have been analyzed to determine the effect of sinkhole geometry on temperature minima, diurnal ...

C. D. Whiteman; T. Haiden; B. Pospichal; S. Eisenbach; R. Steinacker

2004-08-01T23:59:59.000Z

143

LOW TEMPERATURE CATHODE SUPPORTED ELECTROLYTES  

DOE Green Energy (OSTI)

This project has three main goals: Thin Films Studies, Preparation of Graded Porous Substrates and Basic Electrical Characterization and testing of Planar Single Cells. This period has continued to address the problem of making dense 1/2 to 5 {micro}m thick dense layers on porous substrates (the cathode LSM). Our current status is that we are making structures of 2-5 cm{sup 2} in area, which consist of either dense YSZ or CGO infiltrated into a 2-5 {micro}m thick 50% porous layer made of either nanoncrystalline CGO or YSZ powder. This composite structure coats a macroporous cathode or anode; which serves as the structural element of the bi-layer structure. These structures are being tested as SOFC elements. A number of structures have been evaluated both as symmetrical and as button cell configuration. Results of this testing indicates that the cathodes contribute the most to cell losses for temperatures below 750 C. In this investigation different cathode materials were studied using impedance spectroscopy of symmetric cells and IV characteristics of anode supported fuel cells. Cathode materials studied included La{sub 0.8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (LSCF), La{sub 0.7}Sr{sub 0.2}MnO{sub 3} (LSM), Pr{sub 0.8}Sr{sub 0.2}Fe{sub 0.8}O{sub 3} (PSCF), Sm{sub 0.8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (SSCF), and Yb{sub .8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (SSCF). A new technique for filtering the Fourier transform of impedance data was used to increase the sensitivity of impedance analysis. By creating a filter specifically for impedance spectroscopy the resolution was increased. The filter was tailored to look for specific circuit elements like R//C, Warburg, or constant phase elements. As many as four peaks can be resolved using the filtering technique on symmetric cells. It may be possible to relate the different peaks to material parameters, like the oxygen exchange coefficient. The cathode grouped in order from lowest to highest ASR is LSCF < PSCF < SSCF < YSCF < LSM. The button cell results agree with this ordering indicating that this is an important tool for use in developing our understanding of electrode behavior in fuel cells.

Harlan U. Anderson; Fatih Dogan; Vladimir Petrovsky

2002-03-31T23:59:59.000Z

144

Quantum Chemistry at Finite Temperature  

E-Print Network (OSTI)

In this article, we present emerging fields of quantum chemistry at finite temperature. We discuss its recent developments on both experimental and theoretical fronts. First, we describe several experimental investigations related to the temperature effects on the structures, electronic spectra, or bond rupture forces for molecules. These include the analysis of the temperature impact on the pathway shifts for the protein unfolding by atomic force microscopy (AFM), the temperature dependence of the absorption spectra of electrons in solvents, and the temperature influence over the intermolecular forces measured by the AFM. On the theoretical side, we review advancements made by the author in the coming fields of quantum chemistry at finite temperature. Starting from the Bloch equation, we have derived the sets of hierarchy equations for the reduced density operators in both canonical and grand canonical ensembles. They provide a law according to which the reduced density operators vary in temperature for the identical and interacting many-body systems. By taking the independent particle approximation, we have solved the equations in the case of a grand canonical ensemble, and obtained an energy eigenequation for the molecular orbitals at finite temperature. The explicit expression for the temperature-dependent Fock operator is also given. They form a mathematical foundation for the examination of the molecular electronic structures and their interplay with finite temperature. Moreover, we clarify the physics concerning the temperature effects on the electronic structures or processes of the molecules, which is crucial for both theoretical understanding and computation. Finally, ....

Liqiang Wei

2006-05-23T23:59:59.000Z

145

Chemical Equilibration at the Hagedorn Temperature  

E-Print Network (OSTI)

One important question in relativistic heavy ion collisions is if hadrons, specifically anti-hyperons, are in equilibrium before thermal freezeout because strangeness enhancement has long been pointed to as a signature for Quark Gluon Plasma. Because anti-baryons have long equilibration times in the hadron gas phase it has been suggested that they are "born" into equilibrium. However, Hagedorn states, massive resonances, which are thought to appear near the critical temperature, contribute to fast chemical equilibration times for a hadron gas by providing extra degrees of freedom. Here we use master equations to describe the interplay between Hagedorn resonances, pions, and baryon anti-baryon pairs as they equilibrate over time and observe if the baryons and anti-baryons are fully equilibrated within the fireball.

J. Noronha-Hostler; C. Greiner; I. A. Shovkovy

2007-03-23T23:59:59.000Z

146

Evaluate Buildings Greenhouse Gas Emissions Contribution by Program |  

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

Evaluate Buildings Greenhouse Gas Emissions Contribution by Program Evaluate Buildings Greenhouse Gas Emissions Contribution by Program Evaluate Buildings Greenhouse Gas Emissions Contribution by Program October 7, 2013 - 10:48am Addthis When prioritizing building types and sites for evaluating greenhouse gas (GHG) emissions, Federal agencies should first determine which programs contribute the most to their total building greenhouse gas (GHG) emissions and focus their analysis on those programs. Using the total buildings energy use by program, these emissions profile can be calculated using the Federal Energy Management Program's Annual GHG and Sustainability Data Report site. In the example below, Agency ABC should focus on Programs B and C first because together they represent over 80% of building emissions. Agencies

147

Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat Flow In  

Open Energy Info (EERE)

Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat Flow In Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat Flow In The Precambrian And Younger Silicic Rocks Of The Zuni And Florida Mountains, New Mexico (Usa) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat Flow In The Precambrian And Younger Silicic Rocks Of The Zuni And Florida Mountains, New Mexico (Usa) Details Activities (4) Areas (2) Regions (0) Abstract: High heat flow in the Zuni Mountains, New Mexico, U.S.A., has been explained by the possible presence of a buried felsic pluton. Alternately, high K, U, Th abundances have been proposed to account for part of the high heat flow. The mean radiogenic heat contribution for 60 samples of Precambrian core rocks is 7.23 μcal/gm-yr, which is slightly

148

OSTI contribution to President's "Big Data Research and Development...  

Office of Scientific and Technical Information (OSTI)

OSTI contribution to President's "Big Data Research and Development Initiative" Feature Archive In the age of Big Data, OSTI is playing a key role to ensure the impact of DOE...

149

Contribution of corporate social responsibility to information security management  

Science Conference Proceedings (OSTI)

Contemporary societies develop scepticism about the social responsibility of businesses. There are expectations that firms/corporations/industries/companies make more than just economic contributions. In the area of information technology, more and more ...

Theodosios Tsiakis

2009-11-01T23:59:59.000Z

150

Commemorating Black History: Contributions of African Americans to the  

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

Commemorating Black History: Contributions of African Americans to Commemorating Black History: Contributions of African Americans to the Manhattan Project Commemorating Black History: Contributions of African Americans to the Manhattan Project February 21, 2013 - 12:00pm Addthis July 20, 1944 July 20, 1944 September 21, 1944 September 21, 1944 March 24, 1944 March 24, 1944 June 27, 1944 June 27, 1944 July 20, 1944 September 21, 1944 March 24, 1944 June 27, 1944 The Department of Energy (DOE) commissioned an exhibit documenting the contributions of African Americans to the Manhattan Project at Hanford Reservation. The exhibit features pictures taken from the Hanford archives and oral histories of African Americans. The site was used to produce plutonium for the bomb that brought an end to World War II. During that era, people from all over the country came to Hanford, ultimately forming a

151

Wildfires may contribute more to global warming than previously predicted  

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

Wildfires may contribute more to global warming Wildfires may contribute more to global warming Wildfires may contribute more to global warming than previously predicted They suggest that fire emissions could contribute a lot more to the observed climate warming than current estimates show. July 9, 2013 Haze of smoke emanating from the 2011 Las Conchas, NM fire. Haze of smoke emanating from the 2011 Las Conchas, NM fire. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "The fact that we are experiencing more fires and that climate change may increase fire frequency underscores the need to include these specialized particles in the computer models, and our results show how this can be done," Dubey said. Particle analysis shows "tar ball" effect is significant LOS ALAMOS, N.M., July 9, 2013-Wildfires produce a witch's brew of

152

Wildfires may contribute more to global warming than previously predicted  

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

Wildfires may contribute more to global warming Wildfires may contribute more to global warming Wildfires may contribute more to global warming than previously predicted They suggest that fire emissions could contribute a lot more to the observed climate warming than current estimates show. July 9, 2013 Haze of smoke emanating from the 2011 Las Conchas, NM fire. Haze of smoke emanating from the 2011 Las Conchas, NM fire. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "The fact that we are experiencing more fires and that climate change may increase fire frequency underscores the need to include these specialized particles in the computer models, and our results show how this can be done," Dubey said. Particle analysis shows "tar ball" effect is significant LOS ALAMOS, N.M., July 9, 2013-Wildfires produce a witch's brew of

153

Surface Contribution to Planetary Albedo Variability in Cryosphere Regions  

Science Conference Proceedings (OSTI)

Climatological planetary albedo obtained from the International Satellite Cloud Climatology Project (ISCCP) D-series flux dataset is broken down into contributions from the surface and atmosphere in cryosphere regions. The atmosphere accounts for ...

Xin Qu; Alex Hall

2005-12-01T23:59:59.000Z

154

Study shows that 'brown carbon' contributes more to climate change...  

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

Study shows that 'brown carbon' contributes more to climate change than previously believed By Jared Sagoff * February 18, 2013 Tweet EmailPrint Much of the current effort toward...

155

LLNL scientists contributed to the latest Higgs Boson results...  

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

32113boson 03212013 LLNL scientists contributed to the latest Higgs Boson results announced by CERN Donald B Johnston, LLNL, (925) 423-4902, johnston19@llnl.gov Printer-friendly...

156

Broadcasting collective operation contributions throughout a parallel computer  

Science Conference Proceedings (OSTI)

Methods, systems, and products are disclosed for broadcasting collective operation contributions throughout a parallel computer. The parallel computer includes a plurality of compute nodes connected together through a data communications network. Each compute node has a plurality of processors for use in collective parallel operations on the parallel computer. Broadcasting collective operation contributions throughout a parallel computer according to embodiments of the present invention includes: transmitting, by each processor on each compute node, that processor's collective operation contribution to the other processors on that compute node using intra-node communications; and transmitting on a designated network link, by each processor on each compute node according to a serial processor transmission sequence, that processor's collective operation contribution to the other processors on the other compute nodes using inter-node communications.

Faraj, Ahmad (Rochester, MN)

2012-02-21T23:59:59.000Z

157

Broadcasting collective operation contributions throughout a parallel computer  

DOE Patents (OSTI)

Methods, systems, and products are disclosed for broadcasting collective operation contributions throughout a parallel computer. The parallel computer includes a plurality of compute nodes connected together through a data communications network. Each compute node has a plurality of processors for use in collective parallel operations on the parallel computer. Broadcasting collective operation contributions throughout a parallel computer according to embodiments of the present invention includes: transmitting, by each processor on each compute node, that processor's collective operation contribution to the other processors on that compute node using intra-node communications; and transmitting on a designated network link, by each processor on each compute node according to a serial processor transmission sequence, that processor's collective operation contribution to the other processors on the other compute nodes using inter-node communications.

Faraj, Ahmad (Rochester, MN)

2012-02-21T23:59:59.000Z

158

Wind energy contribution to a low-carbon grid  

Science Conference Proceedings (OSTI)

Wind power systems being promoted today contribute little to a low-carbon grid because the system concept is 70-90 percent dependent on dispatchable fossil fuel generators. This structural conflict has no visible solutions. (author)

Pavlak, Alex

2010-05-15T23:59:59.000Z

159

On the Scientific Contributions and Insight of Professor Yale Mintz  

Science Conference Proceedings (OSTI)

Professor Yale Mintz's contributions in combining theory, diagnostic analysis, and modeling in scientific studies across a broad range of interests over more than four decades are reviewed. His studies include diagnostic analysis of the general ...

Donald R. Johnson; Akio Arakawa

1996-12-01T23:59:59.000Z

160

Contributions to the LCWS99, Sitges, April 1999 TESLA Report 1999-20 Contributions to the LCWS99, Sitges, April 1999 TESLA Report 1999-20  

E-Print Network (OSTI)

Contributions to the LCWS99, Sitges, April 1999 TESLA Report 1999-20 #12;Contributions to the LCWS99, Sitges, April 1999 TESLA Report 1999-20 #12;Contributions to the LCWS99, Sitges, April 1999 TESLA Report 1999-20 #12;Contributions to the LCWS99, Sitges, April 1999 TESLA Report 1999-20 #12;Contributions

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

High temperature interfacial superconductivity  

DOE Patents (OSTI)

High-temperature superconductivity confined to nanometer-scale interfaces has been a long standing goal because of potential applications in electronic devices. The spontaneous formation of a superconducting interface in bilayers consisting of an insulator (La.sub.2CuO.sub.4) and a metal (La.sub.1-xSr.sub.xCuO.sub.4), neither of which is superconducting per se, is described. Depending upon the layering sequence of the bilayers, T.sub.c may be either .about.15 K or .about.30 K. This highly robust phenomenon is confined to within 2-3 nm around the interface. After exposing the bilayer to ozone, T.sub.c exceeds 50 K and this enhanced superconductivity is also shown to originate from a 1 to 2 unit cell thick interfacial layer. The results demonstrate that engineering artificial heterostructures provides a novel, unconventional way to fabricate stable, quasi two-dimensional high T.sub.c phases and to significantly enhance superconducting properties in other superconductors. The superconducting interface may be implemented, for example, in SIS tunnel junctions or a SuFET.

Bozovic, Ivan (Mount Sinai, NY); Logvenov, Gennady (Port Jefferson Station, NY); Gozar, Adrian Mihai (Port Jefferson, NY)

2012-06-19T23:59:59.000Z

162

Relative Roles of Elevated Heating and Surface Temperature Gradients in Driving Anomalous Surface Winds over Tropical Oceans  

Science Conference Proceedings (OSTI)

Elevated heating by cumulus convection and sea surface temperature gradients are both thought to contribute to surface winds over tropical oceans. The relative strength and role of each mechanism is examined by imposing forcing derived from data ...

John C. H. Chiang; Stephen E. Zebiak; Mark A. Cane

2001-06-01T23:59:59.000Z

163

A chiral lagrangian with broken scale: a Fortran code with the thermal contributions of the dilaton field  

E-Print Network (OSTI)

The Chiral Dilaton Model is a chiral lagrangian in which the breaking of scale invariance is regulated by the expectation value of a scalar field, called dilaton. Here we provide a Fortran code \\cite{epaps,ind}, as a tool to make calculations within the Chiral Dilaton Model at finite density and temperature. The calculations are improved respect to previous works [arXiv:0704.3707,arXiv:0805.4188] by including the thermal contributions of the dilaton field.

Bonanno, Luca

2009-01-01T23:59:59.000Z

164

The Relationship between Land Use and Temperature Change in Dallas County, Texas  

E-Print Network (OSTI)

This study examines the relationship between land use and temperature change in Dallas County, TX. The purpose of this research is to analyze the relationship between temperature and land use and to identify the primary factors contributing to the formation of urban heat islands based on different categories of land use. Specifically, this research analyzes the elements that contribute to the urban heat island effect in Dallas County using temperature data provided by remote sensing imagery and parcel-based land use data using Geographic Information System (GIS) technique and a correlation analysis method, which was employed to analyze the relationship between temperature and land use. The results of this study showed that every land use category has different temperature averages and those patterns were observed similarly in both 2000 and 2005. Parking, airport, commercial, industrial, and residential areas have relatively high temperatures. In contrast, water, undeveloped area and parks showed relatively low temperatures. Another major finding was ratio of land use composition affected the temperature of census tracts. Correlation analyses of land use and temperature in 2000 and 2005 indicate that various types of land use categories have significant relationships with temperature. Among them commercial, industrial, residential, parking, and infrastructure, are positively associated with temperature, while undeveloped, parks, water, and dedicated areas are negatively associated with temperature. Areas with a high ratio of commercial use showed the highest and undeveloped areas showed the lowest relationship. Furthermore, through the analysis of the relationship between land use and temperature change for five years (2000-2005), this study finds that temperature change depends on the ratio of each land use category change. The results of this study can help local planning and policy decisions which are related to urban land use planning concerning temperature change such as zoning, environmental regulations and open space preservation.

Kim, Hee Ju

2009-08-01T23:59:59.000Z

165

High-temperature ceramic receivers  

DOE Green Energy (OSTI)

An advanced ceramic dome cavity receiver is discussed which heats pressurized gas to temperatures above 1800/sup 0/F (1000/sup 0/C) for use in solar Brayton power systems of the dispersed receiver/dish or central receiver type. Optical, heat transfer, structural, and ceramic material design aspects of the receiver are reported and the development and experimental demonstration of a high-temperature seal between the pressurized gas and the high-temperature silicon carbide dome material is described.

Jarvinen, P. O.

1980-01-01T23:59:59.000Z

166

High Temperature and Electrical Properties  

Science Conference Proceedings (OSTI)

Mar 5, 2013... and Nanomaterials: High Temperature and Electrical Properties ... thermomechanical (or in cyclic power) loading of electronic devices is an ...

167

Ultra High Temperature Ceramic Composites  

Science Conference Proceedings (OSTI)

Oct 9, 2012 ... These ceramics, often combined with 20-30% SiC, have been studied extensively in monolithic form, demonstrating excellent high-temperature ...

168

Humidity, Temperature, and Voltage (Presentation)  

SciTech Connect

An update is given on the work of the PV Quality Assurance Task Force; Group 3: studying the effects of humidity, temperature, and voltage bias.

Wohlgemuth, J.

2012-03-01T23:59:59.000Z

169

Wet-Bulb Temperature from Relative Humidity and Air Temperature  

Science Conference Proceedings (OSTI)

An equation is presented for wet-bulb temperature as a function of air temperature and relative humidity at standard sea level pressure. It was found as an empirical fit using gene-expression programming. This equation is valid for relative ...

Roland Stull

2011-11-01T23:59:59.000Z

170

Stability of shock waves in high temperature plasmas  

Science Conference Proceedings (OSTI)

The Dyakov-Kontorovich criteria for spontaneous emission of acoustic waves behind shock fronts are investigated for high temperature aluminum and beryllium plasmas. To this end, the Dyakov and critical stability parameters are calculated from Rankine-Hugoniot curves using a more realistic equation of state (EOS). The cold and ionic contributions to the EOS are obtained via scaled binding energy and mean field theory, respectively. A screened hydrogenic model, including l-splitting, is used to calculate the bound electron contribution to the electronic EOS. The free electron EOS is obtained from Fermi-Dirac statistics. Predictions of the model for ionization curves and shock Hugoniot are found to be in excellent agreement with available experimental and theoretical data. It is observed that the electronic EOS has significant effect on the stability of the planar shock front. While the shock is stable for low temperatures and pressures, instability sets in as temperature rises. The basic reason is ionization of electronic shells and consequent increase in electronic specific heat. The temperatures and densities of the unstable region correspond to those where electronic shells get ionized. With the correct modeling of bound electrons, we find that shock instability for Al occurs at a compression ratio {approx}5.4, contrary to the value {approx}3 reported in the literature. Free electrons generated in the ionization process carry energy from the shock front, thereby giving rise to spontaneously emitted waves, which decay the shock front.

Das, Madhusmita [Department of Physics, Indian Institute of Technology, Bombay, Powai-400076 (India); Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai-400085 (India); Bhattacharya, Chandrani; Menon, S. V. G. [Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai-400085 (India)

2011-10-15T23:59:59.000Z

171

NASA GISS Surface Temperature (GISTEMP) Analysis: Graphics  

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

Temperature Analysis Graphs NASA GISS Surface Temperature (GISTEMP) Analysis: Graphics Time Series Graphs of Global, Hemispheric, and Zonal Temperature Anomalies Graphics...

172

Effect of coal rank and process conditions on temperature distribution in a liquefaction reactor  

SciTech Connect

The temperature distribution in a liquefaction reactor in the integrated TSL process is studied. The effects of gas and slurry superficial velocities, process solvent characteristics, reactor length, and catalyst sulfiding agent on the exotherm and temperature difference in the reactor are studied. A substantial temperature difference is observed with subbituminous coal as compared with bituminous coal, at comparable reactor conditions. Some of the factors that are believed to have contributed to the large exotherm and temperature difference in the reactor are slow kinetics and high reaction heat for subbituminous coal conversion and pyrrhotite catalysis.

Nalitham, R.V.; Moniz, M.

1986-04-01T23:59:59.000Z

173

Slow Temperature Equilibration Behind the Shock Front of SN 1006  

E-Print Network (OSTI)

We report on the observation of OVII Doppler line broadening in a compact knot at the edge of SN 1006 detected with the Reflective Grating Spectrometer on board XMM-Newton. The observed line width of sigma = 3.4+/-0.5 eV at a line energy of 574 eV indicates an oxygen temperature of kT = 528+/-150 keV. Combined with the observed electron temperature of 1.5 keV the observed broadening is direct evidence for temperature non-equilibration in high Mach number shocks, and slow subsequent equilibration. The OVII line emission allows an accurate determination of the ionization state of the plasma, which is characterized by a relatively high forbidden line contribution, indicating log(n_e t) ~ 9.2.

Vink, Jeroen C; Gu, M F; Rasmussen, A; Kaastra, J S; Vink, Jacco; Gu, Ming Feng; Rasmussen, Andrew; Kaastra, Jelle S.

2003-01-01T23:59:59.000Z

174

Slow Temperature Equilibration Behind the Shock Front of SN 1006  

E-Print Network (OSTI)

We report on the observation of OVII Doppler line broadening in a compact knot at the edge of SN 1006 detected with the Reflective Grating Spectrometer on board XMM-Newton. The observed line width of sigma = 3.4+/-0.5 eV at a line energy of 574 eV indicates an oxygen temperature of kT = 528+/-150 keV. Combined with the observed electron temperature of 1.5 keV the observed broadening is direct evidence for temperature non-equilibration in high Mach number shocks, and slow subsequent equilibration. The OVII line emission allows an accurate determination of the ionization state of the plasma, which is characterized by a relatively high forbidden line contribution, indicating log(n_e t) ~ 9.2.

Jacco Vink; J. Martin Laming; Ming Feng Gu; Andrew Rasmussen; Jelle S. Kaastra

2003-03-03T23:59:59.000Z

175

Contribution of organic carbon to wood smoke particulate matter absorption  

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

Contribution of organic carbon to wood smoke particulate matter absorption Contribution of organic carbon to wood smoke particulate matter absorption of solar radiation Title Contribution of organic carbon to wood smoke particulate matter absorption of solar radiation Publication Type Journal Article Year of Publication 2012 Authors Kirchstetter, Thomas W., and Tracy L. Thatcher Journal Atmospheric Chemistry and Physics Volume 12 Pagination 6067-6072 Abstract A spectroscopic analysis of 115 wintertime partic- ulate matter samples collected in rural California shows that wood smoke absorbs solar radiation with a strong spectral se- lectivity. This is consistent with prior work that has demon- strated that organic carbon (OC), in addition to black car- bon (BC), appreciably absorbs solar radiation in the visible and ultraviolet spectral regions. We apportion light absorp-

176

Advisory Board Makes Valuable Contributions to EM | Department of Energy  

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

Advisory Board Makes Valuable Contributions to EM Advisory Board Makes Valuable Contributions to EM Advisory Board Makes Valuable Contributions to EM July 2, 2012 - 12:00pm Addthis WASHINGTON, D.C. - The eight local boards of the EM Site-Specific Advisory Board (EM SSAB) provided 56 recommendations collectively in 2011, according to a recent assessment of board input into the EM program. The Board has offered recommendations to the EM sites around the DOE complex championing public participation activities, emphasizing safe disposal of contaminated material and, in some cases, yielding significant taxpayer savings. "I've read through recommendations that were highlighted by site managers and I am impressed by the breadth and significance of the issues that the EM SSAB members tackle," Senior Advisor for Environmental

177

Advisory Board Makes Valuable Contributions to EM | Department of Energy  

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

Advisory Board Makes Valuable Contributions to EM Advisory Board Makes Valuable Contributions to EM Advisory Board Makes Valuable Contributions to EM July 2, 2012 - 12:00pm Addthis WASHINGTON, D.C. - The eight local boards of the EM Site-Specific Advisory Board (EM SSAB) provided 56 recommendations collectively in 2011, according to a recent assessment of board input into the EM program. The Board has offered recommendations to the EM sites around the DOE complex championing public participation activities, emphasizing safe disposal of contaminated material and, in some cases, yielding significant taxpayer savings. "I've read through recommendations that were highlighted by site managers and I am impressed by the breadth and significance of the issues that the EM SSAB members tackle," Senior Advisor for Environmental

178

Contributions to Key Energy Conversion Technologies and Advanced Methods  

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

Contributions to Key Energy Conversion Technologies and Advanced Methods Contributions to Key Energy Conversion Technologies and Advanced Methods for Optimum Energy Systems Design and Planning Speaker(s): Daniel Favrat Date: February 27, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare This presentation reviews some of EPFL-LENI's recent contributions to advanced cogeneration and heat pump technologies as well as to new system design approaches based on multimodal evolutionar algorithms. In the field of cogeneration, theoretical and experimental results show that gas engines with unscavenged ignition prechambers can, without the need of a catalyst, achieve high efficiencies with reasonable emissions with both natural gas and biogas. Combination with Organic Rankine Cycle (ORC) heat recovery

179

EM SSAB Contributes Community Views to Clean-up Decisions  

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

Contributes Community Views to Clean-up Decisions Contributes Community Views to Clean-up Decisions 2011 Local Board Contributions The Environmental Management Site-Specific Advisory Board (EM SSAB) has a unique mandate to provide input regarding the cleanup of nuclear legacy sites to the Department of Energy's Office of Environmental Management (EM). Chartered under the Federal Advisory Committee Act, the EM SSAB today comprises eight local boards, located in Hanford, WA; Idaho Falls, ID: Los Alamos, NM; the Nevada National Security Site; Oak Ridge, TN; Paducah, KY; Portsmouth, OH; and the Savannah River Site, SC. EM has made public participation a fundamental component of its cleanup mission and has found that the EM SSAB, which draws upon diverse community

180

State Geological Survey Contributions to NGDS Data Development, Collection  

Open Energy Info (EERE)

Geological Survey Contributions to NGDS Data Development, Collection Geological Survey Contributions to NGDS Data Development, Collection and Maintenance Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title State Geological Survey Contributions to NGDS Data Development, Collection and Maintenance Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Geothermal Data Development, Collection, and Maintenance Project Description The project is expected to make large quantities of geothermal-relevant geoscience data held by the State Geological Surveys available via the NGDS. State Arizona Objectives Expand and enhance the National Geothermal Data System (NGDS) by creating a national, sustainable, distributed, interoperable network of state geological survey-based data providers that will develop, collect, serve, and maintain geothermalrelevant data that operates as an integral compliant component of NGDS.

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Deep Web Technologies' Innovations Contribute to DOE Science Search  

Office of Scientific and Technical Information (OSTI)

Deep Web Technologies' Innovations Contribute to DOE Science Search Deep Web Technologies' Innovations Contribute to DOE Science Search Technology NEWS MEDIA CONTACT: Cathey Daniels, (865) 576-9539 FOR IMMEDIATE RELEASE June 25, 2008 Deep Web Technologies' Innovations Contribute to DOE Science Search Technology Oak Ridge, TN - The 2008 SBIR Small Business of the Year award, announced today by the Department of Energy, acknowledged the web search innovations of Deep Web Technologies, Inc., which has made remarkable advances in an unconventional technology, called federated search. Using federated search, the DOE Office of Scientific and Technical Information (OSTI) has created and deployed groundbreaking tools for making larger quantities of science and technology information available to more people, more quickly and more

182

EM Contributes Expertise to Comprehensive Resource on Managing Nuclear  

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

Contributes Expertise to Comprehensive Resource on Managing Contributes Expertise to Comprehensive Resource on Managing Nuclear Projects EM Contributes Expertise to Comprehensive Resource on Managing Nuclear Projects October 30, 2013 - 12:00pm Addthis EM officials wrote a chapter of this book, described as a valuable resource for project managers, plant managers, engineers, regulators, training professionals, consultants and academics. EM officials wrote a chapter of this book, described as a valuable resource for project managers, plant managers, engineers, regulators, training professionals, consultants and academics. WASHINGTON, D.C. - EM officials wrote a chapter of a recently published book, Managing Nuclear Projects - A Comprehensive Management Resource, which covers a range of areas with emphasis on process, requirements and

183

Short-distance contribution to the spectrum of Hawking radiation  

E-Print Network (OSTI)

The Hawking effect can be rederived in terms of two-point functions and in such a way that it makes it possible to estimate, within the conventional semiclassical theory, the contribution of ultrashort distances to the Planckian spectrum. For Schwarzschild black holes of three solar masses the analysis shows that Hawking radiation is very robust up to frequencies of 96 T_H or 270 T_H for bosons and fermions, respectively. For primordial black holes (with masses around 10^{15} g) these frequencies turn out to be of order 52T_H and 142 T_H. Only at these frequencies and above do we find that the contribution of Planck distances is of order of the total spectrum itself. Below this scale, the contribution of ultrashort distances to the spectrum is negligible. This suggests that only above these frequencies could an underlying quantum theory of gravity potentially predict significant deviations from Hawking's semiclassical result.

I. Agullo; J. Navarro-Salas; Gonzalo J. Olmo; Leonard Parker

2006-11-30T23:59:59.000Z

184

An analysis of factors contributing to train-involved crashes  

E-Print Network (OSTI)

A railroad-highway grade crossing is a unique intersection in that two different modes of transportation (trains and vehicles) use the same physical space. Many factors can contribute to collisions between trains and vehicles at these crossings. Crashes involving trains and vehicles are a significant safety problem in Texas each year. This research attempts to identify and analyze contributing factors to train-involved accidents in Texas. Three years of accident data (1328 total accidents) were analyzed for the contributing factors. The contributing factors were classified into four categories: railroad factors, environmental factors, roadway factors, and driver/passenger factors. The accident data was analyzed using one and two-way classification tables. The frequency distributions for the accidents included in this study were compared to the corresponding frequency distributions for national or statewide accidents using a Chi-Square statistical test. Finally, research hypotheses were formulated based on a literature review of driver behavior and previous accident studies and then tested using population proportion tests. The results of the identification of contributing factors showed that tried to beat train, impaired driver, stuck, stalled, or stopped on tracks, driving around gates, and driver inattention were the five most frequent primary contributing factors. The Chi-Square comparison of frequency distributions for accidents included in this study showed that the protection type, time of day, light conditions, driver race and sex, accident severity, location type, and roadway class were statistically different compared to the corresponding national and statewide frequency distributions. The analysis of the research hypotheses showed that hypotheses 3, 8, and 10 were supported according to the population proportion testing.

Cooner, Scott Allen

1995-01-01T23:59:59.000Z

185

Temperature dependency in UDSM process  

Science Conference Proceedings (OSTI)

In low power UDSM process the use of reduced supply voltage with high threshold voltages may reverse the temperature dependence of designs. In this paper we propose a model to define the true worst Process, Voltage and Temperature conditions to be used ...

B. Lasbouygues; Robin Wilson; Nadine Azémard; Philippe Maurine

2005-09-01T23:59:59.000Z

186

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature turbine engine includes a hybrid ceramic/metallic rotor member having ceramic/metal joint structure. The disclosed joint is able to endure higher temperatures than previously possible, and aids in controlling heat transfer in the rotor member.

Boyd, Gary L. (Tempe, AZ)

1990-01-01T23:59:59.000Z

187

ARM - Measurement - Soil surface temperature  

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

surface temperature surface temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil surface temperature The temperature of the soil measured near the surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AMC : Ameriflux Measurement Component CO2FLX : Carbon Dioxide Flux Measurement Systems SOIL : Soil Measurement from the SGP SWATS : Soil Water and Temperature System MET : Surface Meteorological Instrumentation

188

ARM - Measurement - Surface skin temperature  

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

skin temperature skin temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Surface skin temperature The radiative surface skin temperature, from an IR thermometer measuring the narrowband radiating temperature of the ground surface in its field of view. Categories Radiometric, Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments IRT : Infrared Thermometer MFRIRT : Multifilter Radiometer and Infrared Thermometer External Instruments

189

Surface temperature | OpenEI  

Open Energy Info (EERE)

Surface temperature Surface temperature Dataset Summary Description This dataset, made available by the UK Department of Energy and Climate Change (DECC), shows the difference between the yearly central England temperature for years 1772 through 2009 and the 1961 - 1990 baseline (1961 - 1990 Central England average after smoothing). It also shows the difference between average global temperature and 1961 - 1990 average after smoothing. The original source of the data is the Met Office. Source UK Department of Energy and Climate Change (DECC) Date Released March 12th, 2010 (4 years ago) Date Updated Unknown Keywords climate change Surface temperature UK weather Data application/vnd.ms-excel icon 1 Excel file: Surface Temps, 1772 - 1990 (xls, 1.3 MiB) Quality Metrics Level of Review Some Review

190

Do Planetary Wave Dynamics Contribute to Equable Climates?  

Science Conference Proceedings (OSTI)

Viable explanations for equable climates of the Cretaceous and early Cenozoic (from about 145 to 50 million years ago), especially for the above-freezing temperatures detected for high-latitude continental winters, have been a long-standing ...

Sukyoung Lee; Steven Feldstein; David Pollard; Tim White

2011-05-01T23:59:59.000Z

191

The Contributions of Education and Experience to Forecast Skill  

Science Conference Proceedings (OSTI)

An analysis of nine semesters of temperature and precipitation forecasts at the State University of New York at Albany has been conducted with the goal of investigating the dependence of forecasting skill on education and experience. The results ...

Paul J. Roebber; Lance F. Bosart

1996-03-01T23:59:59.000Z

192

CONTRIBUTED to ASA/Q&P, ASA/SPES, and IMS JRC 2000 Spatial Spectral Estimation for Reactor Modelling and Control  

E-Print Network (OSTI)

CONTRIBUTED to ASA/Q&P, ASA/SPES, and IMS JRC 2000 Spatial Spectral Estimation for Reactor grid over a circular region. The measurements are of gas temperatures at channel outlets in a nuclear reactor, which are in uenced by the age of the fuel in the channels. Multiple Slepian tapers de ned over

Scarrott, Carl

193

Utah's Coal Industry: Economic Contributions and Future Prospects  

E-Print Network (OSTI)

Utah's Coal Industry: Economic Contributions and Future Prospects Pamela S. Perlich, Senior's coal industry has played a significant role in the economic development of the state for well over developments. The first section of this paper presents an overview of the coal industry in Utah, examining

194

The renewable energy contribution from waste across Europe.  

E-Print Network (OSTI)

The renewable energy contribution from waste across Europe. Jan Manders Deputy President CEWEP 3rd of the Study Demonstrate amount of Renewable Energy generated by various Waste Processing Routes across Europe of the EU Binding Renewable Energy Targets 2020 in the Renewable Energy Directive 3 #12;Treatment of MSW

195

Contributions of Renewable Energy Resources to Re-source Diversity  

E-Print Network (OSTI)

1 Contributions of Renewable Energy Resources to Re- source Diversity George Gross, Fellow, IEEE- versity" at the 2006 IEEE/PES GM in Montreal, Que- bec, Canada. Index Terms Renewable Energy Systems Resources, Environmental Attributes of Renewable Resources PANEL PRESENTATION SUMMARY HE myriad changes

Gross, George

196

The renewable energy contribution from waste across Europe.  

E-Print Network (OSTI)

The renewable energy contribution from waste across Europe. Jan Manders Deputy President CEWEP 3rd of the Study Demonstrate amount of Renewable Energy generated by various Waste Processing Routes across Europe of the EU Binding Renewable Energy Targets 2020 in the Renewable Energy Directive 3 Treatment of MSW

Columbia University

197

Short Circuit Current Contribution for Different Wind Turbine Generator Types  

DOE Green Energy (OSTI)

An important aspect of wind power plant (WPP) impact studies is to evaluate the short circuit (SC) current contribution of the plant into the transmission network under different fault conditions. This task can be challenging to protection engineers due to the topology differences between different types of wind turbine generators (WTGs) and the conventional generating units. This paper represents simulation results for short circuit current contribution for different types of WTGs obtained through transient analysis using generic WTG models. The obtained waveforms are analyzed to explain the behavior, such as peak values and rate of decay, of the WTG. The effect of fault types and location, and the effect of the control algorithms of power converters on SC current contribution are investigated. It is shown that the response of the WPP to faults will vary based on the type of the installed WTGs. While in Type 1 and Type 2 WTGs, short circuit current will be determined by the physical characteristics of the induction generator, the contribu-tion of Type 3 and Type 4 WTG will be mostly characterized by the power converters control algorithms which are usually considered proprietary information by the wind turbine manufacturers.

Muljadi, E.; Samaan, Nader A.; Gevorgian, Vahan; Li, Jun; Pasupulati, Subbaiah

2010-09-28T23:59:59.000Z

198

Contribution to the Chapter on Wind Power Energy Technology  

E-Print Network (OSTI)

problems in the industry are expected to stop, once supply system constraints are overcome. Onshore windContribution to the Chapter on Wind Power Energy Technology Perspectives 2008 Jørgen Lemming; Poul for Sustainable Energy Technical University of Denmark Roskilde, Denmark January 2008 #12;Author: Jørgen Lemming

199

Method for measuring surface temperature  

DOE Patents (OSTI)

The present invention relates to a method for measuring a surface temperature using is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A. (Los Alamos, NM); Baker, Sheila N. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM)

2009-07-28T23:59:59.000Z

200

High temperature structural insulating material  

DOE Patents (OSTI)

A high temperature structural insulating material useful as a liner for cylinders of high temperature engines through the favorable combination of high service temperature (above about 800/sup 0/C), low thermal conductivity (below about 0.2 W/m/sup 0/C), and high compressive strength (above about 250 psi). The insulating material is produced by selecting hollow ceramic beads with a softening temperature above about 800/sup 0/C, a diameter within the range of 20-200 ..mu..m, and a wall thickness in the range of about 2 to 4 ..mu..m; compacting the beads and a compatible silicate binder composition under pressure and sintering conditions to provide the desired structural form with the structure having a closed-cell, compact array of bonded beads.

Chen, W.Y.

1984-07-27T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

temperatures | OpenEI Community  

Open Energy Info (EERE)

temperatures temperatures Home Graham7781's picture Submitted by Graham7781(1992) Super contributor 18 January, 2013 - 15:46 U.S. Global Change Research Program publishes "National Climate Assessment" report for United States climate change drought OpenEI sea level rise temperatures U.S. Global Climate Change program The U.S. Global Change Research Program, established under the Department of Commerce in 2010, and partnered with NOAA, released an extensive National Climate Assessment report, projecting future climate changes in the United States under different scenarios. The 1,200 page report highlights some rather grim findings about the future of climate change. Here are 5 of the more disconcerting graphics from the report: 1. U.S. Average Temperatures Syndicate content

202

ARM - Measurement - Sea surface temperature  

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

govMeasurementsSea surface temperature govMeasurementsSea surface temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Sea surface temperature The temperature of sea water near the surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model Data Field Campaign Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model Data MIRAI : JAMSTEC Research Vessel Mirai

203

A Synthesis of Antarctic Temperatures  

Science Conference Proceedings (OSTI)

Monthly surface air temperatures from land surface stations, automatic weather stations, and ship/buoy observations from the high-latitude Southern Hemisphere are synthesized into gridded analyses at a resolution appropriate for applications ...

William L. Chapman; John E. Walsh

2007-08-01T23:59:59.000Z

204

High Temperature Optical Gas Sensing  

This series of inventions addresses harsh environment sensing at temperatures above approximately 400-500oC using novel sensing materials that are compatible with optical sensing platforms as well as more conventional resistive platforms. The sensors ...

205

On the USCRN Temperature System  

Science Conference Proceedings (OSTI)

In 2004 a new aspirated surface air temperature system was officially deployed nationally in the U.S. Climate Reference Network (USCRN) commissioned by the National Oceanic and Atmospheric Administration. The primary goal of the USCRN is to ...

K. G. Hubbard; X. Lin; C. B. Baker

2005-07-01T23:59:59.000Z

206

Engineering and Economic Evaluation of Low-Temperature Binary Geothermal Power Plants  

Science Conference Proceedings (OSTI)

Geothermal power plants are commercially mature, dispatchable, base-loaded renewable energy sources. Most existing geothermal power plants exploit moderate-to-high-temperature geothermal resources greater than 150C (300F). These conditions exist in a few relatively small geographic areas of the world, which has limited the amount of geothermal deployment. Emerging technologies, new exploration and drilling techniques, and pre-engineered systems are contributing to make generation from lower-temperature r...

2010-12-31T23:59:59.000Z

207

High Temperature Components of Magma-Related Geothermal Systems: An Experimental and Theoretical Approach  

DOE Green Energy (OSTI)

This summarizes select components of a multi-faceted study of high temperature magmatic fluid behavior in shallow, silicic, volcano-plutonic geothermal systems. This work built on a foundation provided by DOE-supported advances made in our lab in understanding the physics and chemistry of the addition of HCI and other chlorides into the high temperature regions of geothermal systems. The emphasis of this project was to produce a model of the bolatile contributions from felsic magmatic systems to geothermal systems

Philip A. Candela; Philip M. Piccoli

2004-03-15T23:59:59.000Z

208

Extremely Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Extremely Low Temperature Extremely Low Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Extremely Low Temperature Dictionary.png Extremely Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid less than 100°C is considered to to be "extremely low temperature." Note: Sanyal classified fluids of these temperatures to be "non-electrical grade" in 2005, but electricity has since been generated from these

209

High temperature thermometric phosphors for use in a temperature sensor  

SciTech Connect

A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.(y), wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.

Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN); Gillies, George T. (Earlysville, VA)

1998-01-01T23:59:59.000Z

210

DOE Research Contributions to Radiation and Cancer Therapy  

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

DOE Research Contributions to Radiation and Cancer Therapy Resources with Additional Information Planned radiation treatment Peregrine calculation from Mission Possible: DOE Advanced Biomedical Technology Research, page 10 Over the time span of many years, DOE's research has made many contributions to radiation and cancer therapy, including PEREGRINE and Boron Neutron Capture Therapy (BNCT). 'PEREGRINE, a hardware and software system that addresses the problem of radiation therapy dosage using fundamental physics principles, is a revolutionary new tool for analyzing and planning radiation treatment for cancer patients. About 90 percent of radiation treatment patients receive photon therapy, which is PEREGRINE's principal application. PEREGRINE may also be applied to the less frequently used electron-beam therapy and to brachytherapy, which is radiation therapy from an internally planted radiation source. It is effective for radiography, which predicts the pattern of radiation that is transmitted through a patient or other object.'1

211

ARM - ARM Climate Research Facility Contributions to International Polar  

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

Research Support International Polar Year Begins at ACRF with 3-week Campaign in Barrow Aerosol Affects on Clouds To Be Studied Yearlong Study to Improve Polar Measurements of Radiative Energy Education Efforts Educational Kiosk CD Available at No Cost-Request Yours Today! POLAR-PALOOZA: Climate science goes on tour! Partnership Extends Support for National Science Teacher Conference Teacher's Domain Combines Culture and Climate Other Links ACRF IPY Home U.S. IPY Home ARM Climate Research Facility Contributions to International Polar Year (IPY) The Department of Energy's International Polar Year (IPY) contributions will be conducted at the Atmospheric Radiation Measurement Climate Research Facility (ARM) located in the North Slope of Alaska. This DOE user facility

212

Hydrogen peroxide significantly contributes to radiation-induced genomic instability  

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

peroxide significantly contributes to radiation- peroxide significantly contributes to radiation- induced genomic instability Disha Dayal 1 , Sean M. Martin 1 , Sujatha Venkataraman 1 , Charles L. Limoli 2 , Douglas R Spitz 1 . 1 Free Radical and Radiation Biology Program, The University of Iowa, Iowa City, IA- 52246, 2 Department of Radiation Oncology, The University of California, Irvine, CA-92697 Chronic metabolic oxidative stress is associated with genomic instability following exposure to ionizing radiation (IR). Mitochondria have long been known to be a major source of reactive oxygen species (ROS) capable of causing oxidative stress. We hypothesized that radiation damages mitochondria, leading to oxidative stress and eventually genomic instability. This hypothesis is based on preliminary studies in parental

213

Argonne scientist Paul Fischer named AAAS fellow for contributions to  

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

scientist Paul Fischer named AAAS fellow for contributions to scientist Paul Fischer named AAAS fellow for contributions to computational fluid dynamics November 29, 2012 Tweet EmailPrint Paul Fischer of the U.S. Department of Energy's (DOE) Argonne National Laboratory has been named a fellow of the American Association for the Advancement of Science. Fellows are elected for this honor by AAAS in recognition of their scientifically or socially distinguished efforts to advance science or its applications. This year's AAAS fellows were formally announced in the AAAS News & Notes section of the journal Science on Nov. 30. The 2012 fellows will be presented with an official certificate and a gold and blue (representing science and engineering, respectively) rosette pin on Saturday, Feb. 16, from 8 to 10 a.m. at the AAAS Fellows Forum during the

214

Power Marketing Administrations Poised to Make Another Big Contribution to  

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

Marketing Administrations Poised to Make Another Big Marketing Administrations Poised to Make Another Big Contribution to America's Progress Power Marketing Administrations Poised to Make Another Big Contribution to America's Progress March 16, 2012 - 9:00am Addthis Lauren Azar Senior Advisor to Secretary Chu Most Americans have never heard of the Department of Energy's Power Marketing Administrations (PMAs), but these four organizations are a crucial part of the country's electricity infrastructure - past, present and future. Starting with the Bonneville Power Administration in 1937, Congress established the Power Marketing Administrations to distribute and sell electricity from a network of more than 130 federally built hydroelectric dams, including the Hoover Dam, the Columbia River dams, and others throughout the United States. While the PMAs -- which also include the

215

NREL: News Feature - Interns Make Robust Contribution to NREL  

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

Interns Make Robust Contribution to NREL Interns Make Robust Contribution to NREL August 6, 2013 A male wearing a lab coat and safety glasses is adding a liquid to a test tube on a table in front of him. Also on the table are other glass receptacles and laboratory equipment. Enlarge image NREL intern Jonah Richard adds solvent to polymers that will be added to nanotubes in order to single out species of them. Credit: Dennis Schroeder They travel far and wide, from all corners of the country. They come from a diverse set of backgrounds, and they have very different plans for their futures. But the 54 student interns at the Energy Department's National Renewable Energy Laboratory (NREL) this summer all have something in common - a thirst for knowledge and a desire to apply what they have learned in

216

Assessing Flicker Contribution of Individual Feeders to the Substation  

Science Conference Proceedings (OSTI)

Complaints of high flicker levels in a distribution system led to an investigation whose primary suspect was a customer with multiple resistive spot welders. A study was commissioned to identify and quantify the flicker contributions from various feeders at the upstream substation bus. The utility installed a digital power quality meter at the substation bus and at the primary metering point of the customer under suspicion and then compared the two trends. A series of time-domain measurements were also c...

2011-12-30T23:59:59.000Z

217

Scalar and vector contributions to p p yields. Lambda. Lambda  

SciTech Connect

A quark model which includes both scalar and vector contributions to the reaction {bar p}p {yields} {bar {Lambda}}{Lambda} is presented. DWBA calculations of differential cross sections, polarizations and spin correlation coefficients are compared to experimental results at several energies. The results are sensitive to details of the reaction mechanism and to the parameters of the {bar {Lambda}}{Lambda} interaction. 10 refs., 5 figs.

Alberg, M.A. (Seattle Univ., WA (USA). Dept. of Physics Washington Univ., Seattle, WA (USA). Dept. of Physics); Henley, E.M.; Wilets, L. (Washington Univ., Seattle, WA (USA). Dept. of Physics); Kunz, P.D. (Colorado Univ., Boulder, CO (USA). Nuclear Physics Lab.)

1990-01-01T23:59:59.000Z

218

Apparatus and method for high temperature viscosity and temperature measurements  

DOE Patents (OSTI)

A probe for measuring the viscosity and/or temperature of high temperature liquids, such as molten metals, glass and similar materials comprises a rod which is an acoustical waveguide through which a transducer emits an ultrasonic signal through one end of the probe, and which is reflected from (a) a notch or slit or an interface between two materials of the probe and (b) from the other end of the probe which is in contact with the hot liquid or hot melt, and is detected by the same transducer at the signal emission end. To avoid the harmful effects of introducing a thermally conductive heat sink into the melt, the probe is made of relatively thermally insulative (non-heat-conductive) refractory material. The time between signal emission and reflection, and the amplitude of reflections, are compared against calibration curves to obtain temperature and viscosity values.

Balasubramaniam, Krishnan (Mississippi State, MS); Shah, Vimal (Houston, TX); Costley, R. Daniel (Mississippi State, MS); Singh, Jagdish P. (Mississippi State, MS)

2001-01-01T23:59:59.000Z

219

-Scientific Contributions --Scientific Contributions -  

E-Print Network (OSTI)

Parameterizations primitivE Equation DYnamics, see Molteni 2003 for a description), uses a set of parameterization bucket model with interactive tempera- ture, soil moisture, soil ice, snow depth and run off. The ocean Framework (GMF). In GMF each module has an initialization phase and a time stepping loop. The latter

Haak, Hein

220

Contribution of oceanic gas hydrate dissociation to the formation of Arctic Ocean methane plumes  

SciTech Connect

Vast quantities of methane are trapped in oceanic hydrate deposits, and there is concern that a rise in the ocean temperature will induce dissociation of these hydrate accumulations, potentially releasing large amounts of carbon into the atmosphere. Because methane is a powerful greenhouse gas, such a release could have dramatic climatic consequences. The recent discovery of active methane gas venting along the landward limit of the gas hydrate stability zone (GHSZ) on the shallow continental slope (150 m - 400 m) west of Svalbard suggests that this process may already have begun, but the source of the methane has not yet been determined. This study performs 2-D simulations of hydrate dissociation in conditions representative of the Arctic Ocean margin to assess whether such hydrates could contribute to the observed gas release. The results show that shallow, low-saturation hydrate deposits, if subjected to recently observed or future predicted temperature changes at the seafloor, can release quantities of methane at the magnitudes similar to what has been observed, and that the releases will be localized near the landward limit of the GHSZ. Both gradual and rapid warming is simulated, along with a parametric sensitivity analysis, and localized gas release is observed for most of the cases. These results resemble the recently published observations and strongly suggest that hydrate dissociation and methane release as a result of climate change may be a real phenomenon, that it could occur on decadal timescales, and that it already may be occurring.

Reagan, M.; Moridis, G.; Elliott, S.; Maltrud, M.

2011-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Ultra High Temperature | Open Energy Information  

Open Energy Info (EERE)

Ultra High Temperature Ultra High Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Ultra High Temperature Dictionary.png Ultra High Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid greater than 300°C is considered by Sanyal to be "ultra high temperature". "Such reservoirs are characterized by rapid development of steam saturation in the reservoir and steam fraction in the mobile fluid phase upon

222

Very Low Temperature | Open Energy Information  

Open Energy Info (EERE)

Very Low Temperature Very Low Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Very Low Temperature Dictionary.png Very Low Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 100°C and 150°C is considered by Sanyal to be "very low temperature." "The mobile fluid phase in these reservoirs is liquid water. Very few power projects have been developed in the U.S. based on geothermal resources in

223

High temperature nuclear gas turbine  

SciTech Connect

Significance of gas turbine cycle, process of the development of gas turbines, cycle and efficiency of high-temperature gas turbines, history of gas turbine plants and application of nuclear gas turbines are described. The gas turbines are directly operated by the heat from nuclear plants. The gas turbines are classified into two types, namely open cycle and closed cycle types from the point of thermal cycle, and into two types of internal combustion and external combustion from the point of heating method. The hightemperature gas turbines are tbe type of internal combustion closed cycle. Principle of the gas turbines of closed cycle and open cycle types is based on Brayton, Sirling, and Ericsson cycles. Etficiency of the turbines is decided only by pressure ratio, and is independent of gas temperature. An example of the turbine cycle for the nuclear plant Gestacht II is explained. The thermal efficiency of that plant attains 37%. Over the gas temperature of about 750 deg C, the thermal efficiency of the gas turbine cycle is better than that of steam turbine cycle. As the nuclear fuel, coated particle fuel is used, and this can attain higher temperature of core outlet gas. Direct coupling of the nuclear power plants and the high temperature gas turbines has possibility of the higher thermal efficiency. (JA)

Kurosawa, A.

1973-01-01T23:59:59.000Z

224

Temperature & Nuclear Fusion 4 October 2011  

E-Print Network (OSTI)

Temperature & Nuclear Fusion 4 October 2011 Goals · Review temperature in stars · Practice using the important energy scales for nuclear fusion Temperature 1. For each relation we regularly use in class temperature. #12;temperature & nuclear fusion 2 Nuclear Fusion 2. There are a few different energy scales

Militzer, Burkhard

225

Thermal disconnect for high-temperature batteries  

DOE Patents (OSTI)

A new type of high temperature thermal disconnect has been developed to protect electrical and mechanical equipment from damage caused by operation at extreme temperatures. These thermal disconnects allow continuous operation at temperatures ranging from 250.degree. C. to 450.degree. C., while rapidly terminating operation at temperatures 50.degree. C. to 150.degree. C. higher than the continuous operating temperature.

Jungst, Rudolph George (Albuquerque, NM); Armijo, James Rudolph (Albuquerque, NM); Frear, Darrel Richard (Austin, TX)

2000-01-01T23:59:59.000Z

226

Arctic Ocean Warming Contributes to Reduced Polar Ice Cap  

Science Conference Proceedings (OSTI)

Analysis of modern and historical observations demonstrates that the temperature of the intermediate-depth (150–900 m) Atlantic water (AW) of the Arctic Ocean has increased in recent decades. The AW warming has been uneven in time; a local 1°C ...

Igor V. Polyakov; Leonid A. Timokhov; Vladimir A. Alexeev; Sheldon Bacon; Igor A. Dmitrenko; Louis Fortier; Ivan E. Frolov; Jean-Claude Gascard; Edmond Hansen; Vladimir V. Ivanov; Seymour Laxon; Cecilie Mauritzen; Don Perovich; Koji Shimada; Harper L. Simmons; Vladimir T. Sokolov; Michael Steele; John Toole

2010-12-01T23:59:59.000Z

227

Joint Institute for High Temperatures  

National Nuclear Security Administration (NNSA)

Joint Institute for High Temperatures of Russian Academy of Sciences Moscow Institute of Physics and Technology Extended title Extended title Excited state of warm dense matter or Exotic state of warm dense matter or Novel form of warm dense matter or New form of plasma Three sources of generation similarity: solid state density, two temperatures: electron temperature about tens eV, cold ions keep original crystallographic positions, but electron band structure and phonon dispersion are changed, transient but steady (quasi-stationary for a short time) state of non-equilibrium, uniform plasmas (no reference to non-ideality, both strongly and weakly coupled plasmas can be formed) spectral line spectra are emitted by ion cores embedded in plasma environment which influences the spectra strongly,

228

Conceptual study for total utilization of an intermediate temperature geothermal resource  

DOE Green Energy (OSTI)

A multi-use, integrated project plan has been developed for the combined electrical and direct utilization of an intermediate temperature geothermal resource. This concept addresses an integrated project plan with industrial participation, which could make a significant contribution to the national plan for energy independence, by creating new and realistic energy choices for the immediate future.

Swink, D.G.; Schultz, R.J.

1976-04-01T23:59:59.000Z

229

Imbalance of CPU temperatures in a blade system and its impact for power consumption of fans  

Science Conference Proceedings (OSTI)

We are now developing a new metric of data center power efficiency to fairly evaluate the contribution of each improvement for power efficiency. In order to develop it, we built a testbed of a data center and measured power consumption of each components ... Keywords: CPU temperature, Data center, Fan speed, Power consumption, Power efficiency

Yuetsu Kodama; Satoshi Itoh; Toshiyuki Shimizu; Satoshi Sekiguchi; Hiroshi Nakamura; Naohiko Mori

2013-03-01T23:59:59.000Z

230

The Impact of a Changing Southern Hemisphere Annular Mode on Antarctic Peninsula Summer Temperatures  

Science Conference Proceedings (OSTI)

Since the mid-1960s, rapid regional summer warming has occurred on the east coast of the northern Antarctic Peninsula, with near-surface temperatures increasing by more than 2°C. This warming has contributed significantly to the collapse of the ...

Gareth J. Marshall; Andrew Orr; Nicole P. M. van Lipzig; John C. King

2006-10-01T23:59:59.000Z

231

High Temperature Optical Gas Sensing  

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

Optical Gas Sensing Optical Gas Sensing Opportunity Research is active on optical sensors integrated with advanced sensing materials for high temperature embedded gas sensing applications. Patent applications have been filed for two inventions in this area and several other methods are currently under development. These technologies are available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory (NETL). Organizations or individuals with capabilities in optical sensor packaging for harsh environment and high temperature applications are encouraged to contact NETL to explore potential collaborative opportunities. Overview Contact NETL Technology Transfer Group techtransfer@netl.doe.gov

232

High temperature superconductor current leads  

DOE Patents (OSTI)

An electrical lead having one end for connection to an apparatus in a cryogenic environment and the other end for connection to an apparatus outside the cryogenic environment. The electrical lead includes a high temperature superconductor wire and an electrically conductive material distributed therein, where the conductive material is present at the one end of the lead at a concentration in the range of from 0 to about 3% by volume, and at the other end of the lead at a concentration of less than about 20% by volume. Various embodiments are shown for groups of high temperature superconductor wires and sheaths.

Hull, John R. (Hinsdale, IL); Poeppel, Roger B. (Glen Ellyn, IL)

1995-01-01T23:59:59.000Z

233

Room temperature terahertz polariton emitter  

SciTech Connect

Terahertz (THz) range electroluminescence from intersubband polariton states is observed in the ultra strong coupling regime, where the interaction energy between the collective excitation of a dense electron gas and a photonic mode is a significant portion of the uncoupled excitation energy. The polariton's increased emission efficiency along with a parabolic electron confinement potential allows operation up to room temperature in a nonresonant pumping scheme. This observation of room temperature electroluminescence of an intersubband device in the THz range is a promising proof of concept for more powerful THz sources.

Geiser, Markus; Scalari, Giacomo; Castellano, Fabrizio; Beck, Mattias; Faist, Jerome [Institute for Quantum Electronics, ETH Zurich, Wolfgang-Pauli-Strasse 16, 8093 Zurich (Switzerland)

2012-10-01T23:59:59.000Z

234

The Response of the SSM/I to the Marine Environment. Part I: An Analytic Model for the Atmospheric Component of Observed Brightness Temperatures  

Science Conference Proceedings (OSTI)

A comprehensive closed-form parameterization has been developed for the contribution of the nonprecipitating marine atmosphere to microwave brightness temperatures observed by the Special Sensor Microwave/Imager (SSM/I). The variables considered ...

Grant W. Petty; Kristina B. Katsaros

1992-12-01T23:59:59.000Z

235

Changes in hydrogen utilization with temperature during direct coal liquefaction  

Science Conference Proceedings (OSTI)

A reliable means of monitoring the major pathways of hydrogen utilization, in contrast to only measuring net hydrogen comsumption, would be very useful for process optimization. The goal of this work was to develop an analytical approach for quantitatively distinguishing hydrogen consumed in hydrogenation from that utilized to stabilize thermolysis fragments. The approach outlined yields a rather detailed description of the net utilization of hydrogen during direct liquefaction, partitioning it into contributions from gas generation, heteroatom removal, hydrogenation, and matrix breakdown. Preliminary results indicate that internal hydrogen reorganization, with little consumption, predominates at low temperatures, with hydrogenation being compensated for by the hydrogen liberated in condensations. As the temperature is increased, bond cleavage reactions and aromatization reactions appear to become more important, and the net hydrogen consumption increases. (3 tables 1 figs., 11 refs.)

Finseth, D.H.; Bockrath, B.C.; Cillo, D.L.; Illig, E.G.; Sprecher, R.F., Retcofsky, H.L.; Lett, R.G.

1983-01-01T23:59:59.000Z

236

Asymetric change of daily temperature range: Proceedings  

SciTech Connect

This report is a compilation of abstracts of papers presented at the MINIMAX workshop. Topics include; temperature fluxes, influence of clouds on temperature, anthropogenic influences on temperature flux, and carbon dioxide and aerosol induced greenhouse effect.

Kukla, G. [ed.] [Columbia Univ., Palisades, NY (United States). Lamont-Doherty Earth Observatory; Karl, T.R. [ed.] [National Climatic Data Center, Asheville, NC (United States); Riches, M.R. [ed.] [USDOE, Washington, DC (United States)

1994-04-01T23:59:59.000Z

237

Defining and Estimating Global Mean Temperature Anomalies  

Science Conference Proceedings (OSTI)

Methods used to quantify temperature changes of the earth must he assessed relative to an appropriate definition of global mean temperature. In this paper, global mean temperature is defined and the adequacy of using weighted average anomalies to ...

Richard F. Gunst; Sabyasachi Basu; Robert Brunell

1993-07-01T23:59:59.000Z

238

Temperature dependence of the indentation size effect  

E-Print Network (OSTI)

The influence of temperature on the indentation size effect is explored experimentally. Copper is indented on a custom-built high-temperature nanoindenter at temperatures between ambient and 200 °C, in an inert atmosphere ...

Franke, Oliver

239

Test of the Fixed Anvil Temperature Hypothesis  

Science Conference Proceedings (OSTI)

The fixed anvil temperature (FAT) hypothesis is examined based on the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS)-based cloud-top temperature (CTT) in conjunction with the tropical atmospheric profiles and sea surface temperature (...

Yue Li; Ping Yang; Gerald R. North; Andrew Dessler

2012-07-01T23:59:59.000Z

240

Australian Contributions to theAustralian Contributions to the Field of Organic GeochemistryField of Organic Geochemistry  

E-Print Network (OSTI)

by coupling the hard rock geochemistry and geology of kim- berlites and other rocks into the petroleum program on reservoir geochemistry, basin modelling, petroleum migration and shale gas. The main focus in a range of fluid types, temperatures and pressures, including in the weathering of source rocks

Rothman, Daniel

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Gravitational field energy contribution to the neutron star mass  

E-Print Network (OSTI)

Neutron stars are discussed as laboratories of physics of strong gravitational fields. The mass of a neutron star is split into matter energy and gravitational field energy contributions. The energy of the gravitational field of neutron stars is calculated with three different approaches which give the same result. It is found that up to one half of the gravitational mass of maximum mass neutron stars is comprised by the gravitational field energy. Results are shown for a number of realistic equations of state of neutron star matter.

M. Dyrda; B. Kinasiewicz; M. Kutschera; A. Szmaglinski

2006-01-16T23:59:59.000Z

242

High-temperature plasma physics  

SciTech Connect

Both magnetic and inertial confinement research are entering the plasma parameter range of fusion reactor interest. This paper reviews the individual and common technical problems of these two approaches to the generation of thermonuclear plasmas, and describes some related applications of high-temperature plasma physics.

Furth, H.P.

1988-03-01T23:59:59.000Z

243

Intermediate temperature electrolytes for SOFC  

DOE Green Energy (OSTI)

The objective of this work is to identify a new set of materials that would allow the operation of the solid oxide fuel cell in the 600--800{sup degrees}C temperature range. The approach that is being used is to start with a systematic evaluation of new electrolyte materials and then to develop compatible electrode and interconnect materials.

Bloom, I.; Krumpelt, M.; Hash, M.C.; Zebrowski, J.P.; Zurawski, D.

1992-01-01T23:59:59.000Z

244

Intermediate temperature electrolytes for SOFC  

DOE Green Energy (OSTI)

The objective of this work is to identify a new set of materials that would allow the operation of the solid oxide fuel cell in the 600--800{sup degrees}C temperature range. The approach that is being used is to start with a systematic evaluation of new electrolyte materials and then to develop compatible electrode and interconnect materials.

Bloom, I.; Krumpelt, M.; Hash, M.C.; Zebrowski, J.P.; Zurawski, D.

1992-09-01T23:59:59.000Z

245

High temperature lightweight foamed cements  

DOE Patents (OSTI)

Cement slurries are disclosed which are suitable for use in geothermal wells since they can withstand high temperatures and high pressures. The formulation consists of cement, silica flour, water, a retarder, a foaming agent, a foam stabilizer, and a reinforcing agent. A process for producing these cements is also disclosed. 3 figs.

Sugama, Toshifumi.

1989-10-03T23:59:59.000Z

246

High temperature lightweight foamed cements  

DOE Patents (OSTI)

Cement slurries are disclosed which are suitable for use in geothermal wells since they can withstand high temperatures and high pressures. The formulation consists of cement, silica flour, water, a retarder, a foaming agent, a foam stabilizer, and a reinforcing agent. A process for producing these cements is also disclosed.

Sugama, Toshifumi (Mastic Beach, NY)

1989-01-01T23:59:59.000Z

247

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature turbine engine includes a rotor portion having axially stacked adjacent ceramic rotor parts. A ceramic/ceramic joint structure transmits torque between the rotor parts while maintaining coaxial alignment and axially spaced mutually parallel relation thereof despite thermal and centrifugal cycling.

Boyd, Gary L. (Tempe, AZ)

1991-01-01T23:59:59.000Z

248

High temperature size selective membranes  

DOE Green Energy (OSTI)

The objective of this research is to develop a high temperature size selective membrane capable of separating gas mixture components from each other based on molecular size, using a molecular sieving mechanism. The authors are evaluating two concepts: a composite of a carbon molecular sieve (CMS) with a tightly defined pore size distribution between 3 and 4 {angstrom}, and a microporous supporting matrix which provides mechanical strength and resistance to thermal degradation, and a sandwich of a CMS film between the porous supports. The high temperature membranes the authors are developing can be used to replace the current low-temperature unit operations for separating gaseous mixtures, especially hydrogen, from the products of the water gas shift reaction at high temperatures. Membranes that have a high selectivity and have both thermal and chemical stability would improve substantially the economics of the coal gasification process. These membranes can also improve other industrial processes such as the ammonia production and oil reform processes where hydrogen separation is crucial. Results of tests on a supported membrane and an unsupported carbon film are presented.

Yates, S.F.; Zhou, S.J.; Anderson, D.J.; Til, A.E. van

1994-10-01T23:59:59.000Z

249

Geothermal high temperature instrumentation applications  

DOE Green Energy (OSTI)

A quick look at the geothermal industry shows a small industry producing about $1 billion in electric sales annually. The industry is becoming older and in need of new innovative solutions to instrumentation problems. A quick look at problem areas is given along with basic instrumentation requirements. The focus of instrumentation is on high temperature electronics.

Normann, R.A. [Sandia National Labs., Albuquerque, NM (United States); Livesay, B.J. [Livesay Consultants (United States)

1998-06-11T23:59:59.000Z

250

Extreme Maximum Land Surface Temperatures  

Science Conference Proceedings (OSTI)

There are numerous reports in the literature of observations of land surface temperatures. Some of these, almost all made in situ, reveal maximum values in the 50°–70°C range, with a few, made in desert regions, near 80°C. Consideration of a ...

J. R. Garratt

1992-09-01T23:59:59.000Z

251

Low-temperature magnetic refrigerator  

SciTech Connect

The disclosure is directed to a low temperature 4 to 20 K. refrigeration apparatus and method utilizing a ring of magnetic material moving through a magnetic field. Heat exchange is accomplished in and out of the magnetic field to appropriately utilize the device to execute Carnot and Stirling cycles.

Barclay, John A. (Los Alamos, NM)

1985-01-01T23:59:59.000Z

252

High temperature electronic gain device  

SciTech Connect

An integrated thermionic device suitable for use in high temperature, high radiation environments. Cathode and control electrodes are deposited on a first substrate facing an anode on a second substrate. The substrates are sealed to a refractory wall and evacuated to form an integrated triode vacuum tube.

McCormick, J. Byron (Los Alamos, NM); Depp, Steven W. (Los Alamos, NM); Hamilton, Douglas J. (Tucson, AZ); Kerwin, William J. (Tucson, AZ)

1979-01-01T23:59:59.000Z

253

High temperature mineral fiber binder  

SciTech Connect

A modified phenol formaldehyde condensate is reacted with boric acid and cured in the presence of a polyfunctional nitrogeneous compound to provide a binder for mineral wool fibers which is particularly suited for thermal insulation products intended for high temperature service.

Miedaner, P.M.

1980-11-25T23:59:59.000Z

254

HIGH TEMPERATURE GEOTHERMAL RESERVOIR ENGINEERING  

E-Print Network (OSTI)

on the Cerro P r i e t o Geothermal F i e l d , Mexicali,e C e r r o P r i e t o Geothermal F i e l d , Baja C a l i1979 HIGH TEMPERATURE GEOTHERMAL RESERVOIR ENGINEERING R.

Schroeder, R.C.

2009-01-01T23:59:59.000Z

255

Low-temperature magnetic refrigerator  

DOE Patents (OSTI)

The invention relates to magnetic refrigeration and more particularly to low temperature refrigeration between about 4 and about 20 K, with an apparatus and method utilizing a belt of magnetic material passed in and out of a magnetic field with heat exchangers within and outside the field operably disposed to accomplish refrigeration.

Barclay, J.A.

1983-05-26T23:59:59.000Z

256

Susanville District Heating District Heating Low Temperature...  

Open Energy Info (EERE)

Susanville District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Susanville District Heating District Heating Low Temperature...

257

Litchfield Correctional Center District Heating Low Temperature...  

Open Energy Info (EERE)

Correctional Center District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Litchfield Correctional Center District Heating Low Temperature Geothermal...

258

High-Temperature Superconductivity Cable Demonstration Projects...  

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

High-Temperature Superconductivity Cable Demonstration Projects High-Temperature Superconductivity Cable Demonstration Projects A National Effort to Introduce New Technology into...

259

TRENDS: Jones et al. Temperature Anomalies  

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

Data Tables of Global and Hemispheric Temperature Anomalies data Table - Global Monthly and Annual Temperature Anomalies, 1850-2012. data Table - Northern Hemisphere Monthly and...

260

Experimental Techniques for Measuring Temperature and Velocity...  

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

Measuring Temperature and Velocity Fields to Improve the Use and Validation of Building Heat Transfer Models Title Experimental Techniques for Measuring Temperature and Velocity...

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Novel room temperature ferromagnetic semiconductors  

SciTech Connect

Today's information world, bits of data are processed by semiconductor chips, and stored in the magnetic disk drives. But tomorrow's information technology may see magnetism (spin) and semiconductivity (charge) combined in one 'spintronic' device that exploits both charge and 'spin' to carry data (the best of two worlds). Spintronic devices such as spin valve transistors, spin light emitting diodes, non-volatile memory, logic devices, optical isolators and ultra-fast optical switches are some of the areas of interest for introducing the ferromagnetic properties at room temperature in a semiconductor to make it multifunctional. The potential advantages of such spintronic devices will be higher speed, greater efficiency, and better stability at a reduced power consumption. This Thesis contains two main topics: In-depth understanding of magnetism in Mn doped ZnO, and our search and identification of at least six new above room temperature ferromagnetic semiconductors. Both complex doped ZnO based new materials, as well as a number of nonoxides like phosphides, and sulfides suitably doped with Mn or Cu are shown to give rise to ferromagnetism above room temperature. Some of the highlights of this work are discovery of room temperature ferromagnetism in: (1) ZnO:Mn (paper in Nature Materials, Oct issue, 2003); (2) ZnO doped with Cu (containing no magnetic elements in it); (3) GaP doped with Cu (again containing no magnetic elements in it); (4) Enhancement of Magnetization by Cu co-doping in ZnO:Mn; (5) CdS doped with Mn, and a few others not reported in this thesis. We discuss in detail the first observation of ferromagnetism above room temperature in the form of powder, bulk pellets, in 2-3 mu-m thick transparent pulsed laser deposited films of the Mn (<4 at. percent) doped ZnO. High-resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS) spectra recorded from 2 to 200nm areas showed homogeneous distribution of Mn substituting for Zn a 2+ state in the ZnO lattice. Ferromagnetic Resonance (FMR) technique is used to confirm the existence of ferromagnetic ordering at temperatures as high as 425K. The ab initio calculations were found to be consistent with the observation of ferromagnetism arising from fully polarized Mn 2+ state. The key to observed room temperature ferromagnetism in this system is the low temperature processing, which prevents formation of clusters, secondary phases and the host ZnO from becoming n-type. The electronic structure of the same Mn doped ZnO thin films studied using XAS, XES and RIXS, revealed a strong hybridization between Mn 3d and O 2p states, which is an important characteristic of a Dilute magnetic Semiconductor (DMS). It is shown that the various processing conditions like sintering temperature, dopant concentration and the properties of precursors used for making of DMS have a great influence on the final properties. Use of various experimental techniques to verify the physical properties, and to understand the mechanism involved to give rise to ferromagnetism is presented. Methods to improve the magnetic moment in Mn doped ZnO are also described. New promising DMS materials (such as Cu doped ZnO are explored). The demonstrated new capability to fabricate powder, pellets, and thin films of room temperature ferromagnetic semiconductors thus makes possible the realization of a wide range of complex elements for a variety of new multifunctional phenomena related to Spintronic devices as well as magneto-optic components.

Gupta, Amita

2004-11-01T23:59:59.000Z

262

The Pionic Contribution to Diffuse Gamma Rays: Upper Limits  

E-Print Network (OSTI)

Diffuse gamma rays probe the highest-energy processes at the largest scales. Here we derive model-independent constraints on the hadronic contribution to the Galactic and extragalactic gamma-ray spectra in the energy range 50 MeV < E_gamma < 10 GeV. The hadronic component is dominated by emission from neutral pions, with a characteristic spectrum symmetric about m_{pi^0}/2. We exploit the well-defined properties of the pion decay spectrum to quantify the maximum pionic fraction of the observed gamma-ray intensity. We find that the Galactic spectrum above 30 MeV can be at most about 50% pionic. The maximum pionic contribution to the extragalactic spectrum is energy dependent; it also depends on the redshift range over which the sources are distributed, ranging from as low as about 20% for pions generated very recently, to as much as 90% if the pions are generated around redshift 10. The implications of these constraints for models of gamma-ray and neutrino emission are briefly discussed.

Tijana Prodanovic; Brian D. Fields

2004-03-12T23:59:59.000Z

263

The Contribution of Economic Fundamentals to Movements in Exchange Rates  

E-Print Network (OSTI)

A puzzle in the international finance literature has been that fundamental variables do not help forecast the future exchange rate change better than the random walk benchmark. Recently Engel and West (2005, 2006) show that such a result can be explained by the present value model of the exchange rate if the discount factor for the expectation of future fundamental variables is close to one and the fundamental variables are I(1). The approach we take in this paper allows us not only to directly estimate the discount factor but also to study the expectation dynamics that are important in evaluating these exchange rate models. Our estimates are based on a century of data for the US and UK. We employ a Bayesian approach to account for both uncertainty about the specification of the underlying state space model as well as parameter uncertainty. First, we show that the degree of model uncertainty is great and that the implied contribution of observed monetary fundamentals is imprecisely estimated. Second, we deal with the weak identification by bringing additional information to bear on the analysis. This additional information comes in the form of data on interest rate and price differentials and prior information about PPP half-lives and the semi-elasticity of money demand. In general, we find that monetary fundamentals (money and output differentials) and money demand shifters contribute most to movements in exchange rates while uncovered interest parity risk premium

Nathan S. Balke; Jun Ma; Mark E. Wohar

2011-01-01T23:59:59.000Z

264

Observations of seasonal variations in atmospheric greenhouse trapping and its enhancement at high sea surface temperature  

SciTech Connect

The correlation between observed values of atmospheric greenhouse trapping and sea surface temperature is found to vary seasonally. Atmospheric greenhouse trapping is defined here as the difference between infrared emissions from the earth's surface and infrared emissions from the top of the atmosphere through cloudless skies. Infrared surface emissions are calculated from known sea surface temperatures; emissions from the top of the atmosphere are taken from direct satellite measurements. Atmospheric greenhouse trapping at the same sea surface temperature is greater in the winter than in the summer over temperate oceans. In subtropical latitudes, the opposite is true. At surface temperatures above approximately 298 K, atmospheric greenhouse trapping is found to increase even more rapidly from regions of lower sea surface temperature to regions of higher surface temperature than infrared surface emissions. The causes for this [open quotes]super[close quotes] greenhouse effect are explored, and four processes are found to contribute. Water vapor continuum absorption and thermodynamically controlled increases in water vapor concentration at constant relative humidity with increasing atmospheric temperature make significant contributions, but do not explain the entire super greenhouse effect. To explain the observations of atmospheric greenhouse trapping, the upper and middle troposphere, must be increasingly moist over the warmest sea surface temperatures, while the atmospheric temperature profile becomes increasingly unstable. Regions with these high sea surface temperatures are also increasingly subject to deep convection, which suggests that convection moistens the upper and middle troposphere in regions of convective activity relative to nonconvective regions, resulting in the super greenhouse effect. Dynamic processes, along with local thermodynamic processes, are required to explain the observed super greenhouse effect. 30 refs., 3 figs., 2 tabs.

Hallberg, R. (Univ. of Washington, Seattle (United States)); Inamdar, A.K. (Scripps Institution of Oceanography, La Jolla, CA (United States))

1993-05-01T23:59:59.000Z

265

Ballistic Transport at Uniform Temperature  

E-Print Network (OSTI)

A paradigm for isothermal, mechanical rectification of stochastic fluctuations is introduced in this paper. The central idea is to transform energy injected by random perturbations into rigid-body rotational kinetic energy. The prototype considered in this paper is a mechanical system consisting of a set of rigid bodies in interaction through magnetic fields. The system is stochastically forced by white noise and dissipative through mechanical friction. The Gibbs-Boltzmann distribution at a specific temperature defines the unique invariant measure under the flow of this stochastic process and allows us to define ``the temperature'' of the system. This measure is also ergodic and weakly mixing. Although the system does not exhibit global directed motion, it is shown that global ballistic motion is possible (the mean-squared displacement grows like t squared). More precisely, although work cannot be extracted from thermal energy by the second law of thermodynamics, it is shown that ballistic transport from ther...

Bou-Rabee, Nawaf

2007-01-01T23:59:59.000Z

266

High Temperature Heat Exchanger Project  

Science Conference Proceedings (OSTI)

The UNLV Research Foundation assembled a research consortium for high temperature heat exchanger design and materials compatibility and performance comprised of university and private industry partners under the auspices of the US DOE-NE Nuclear Hydrogen Initiative in October 2003. The objectives of the consortium were to conduct investigations of candidate materials for high temperature heat exchanger componets in hydrogen production processes and design and perform prototypical testing of heat exchangers. The initial research of the consortium focused on the intermediate heat exchanger (located between the nuclear reactor and hydrogen production plan) and the components for the hydrogen iodine decomposition process and sulfuric acid decomposition process. These heat exchanger components were deemed the most challenging from a materials performance and compatibility perspective

Anthony E. Hechanova, Ph.D.

2008-09-30T23:59:59.000Z

267

Means of determining extrusion temperatures  

DOE Patents (OSTI)

In an extrusion process comprising the steps of fabricating a metal billet, heating said billet for a predetermined time and at a selected temperature to increase its plasticity and then forcing said heated billet through a small orifice to produce a desired extruded object, the improvement comprising the steps of randomly inserting a plurality of small metallic thermal tabs at different cross sectional depths in said billet as a part of said fabricating step, and examining said extruded object at each thermal tab location for determining the crystal structure at each extruded thermal tab thus revealing the maximum temperature reached during extrusion in each respective tab location section of the extruded object, whereby the thermal profile of said extruded object during extrusion may be determined.

McDonald, Robert E. (Oliver Springs, TN); Canonico, Domenic A. (Oak Ridge, TN)

1977-01-01T23:59:59.000Z

268

High-temperature geothermal cableheads  

DOE Green Energy (OSTI)

Two high-temperature, corrosion-resistant logging cableheads which use metal seals and a stable fluid to achieve proper electrical terminations and cable-sonde interfacings are described. A tensile bar provides a calibrated yield point, and a cone assembly anchors the cable armor to the head. Electrical problems of the sort generally ascribable to the cable-sonde interface were absent during demonstration hostile-environment loggings in which these cableheads were used.

Coquat, J.A.; Eifert, R.W.

1981-11-01T23:59:59.000Z

269

HIGH TEMPERATURE MICROSCOPE AND FURNACE  

DOE Patents (OSTI)

A high-temperature microscope is offered. It has a reflecting optic situated above a molten specimen in a furnace and reflecting the image of the same downward through an inert optic member in the floor of the furnace, a plurality of spaced reflecting plane mirrors defining a reflecting path around the furnace, a standard microscope supported in the path of and forming the end terminus of the light path.

Olson, D.M.

1961-01-31T23:59:59.000Z

270

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1992-01-01T23:59:59.000Z

271

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1993-01-01T23:59:59.000Z

272

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1994-01-01T23:59:59.000Z

273

Temperature & Nuclear Fusion 4 October 2011  

E-Print Network (OSTI)

Temperature & Nuclear Fusion 4 October 2011 Goals · Review temperature in stars · Practice using the important energy scales for nuclear fusion Temperature 1. For each relation we regularly use in class-Boltzmann equation: L = 4R2 T4 . (d) In fusion energy generation: T . #12;temperature & nuclear fusion 2 Nuclear

Militzer, Burkhard

274

Temperature profiles determine HRSG steam production  

Science Conference Proceedings (OSTI)

This article examine how temperature profiles affect steam production in heat recovery steam generators(HRSG). A typical gas/steam temperature profile for a HRSG is shown. Heat balance equations for the superheater, evaporator, and the complete HRSG are given along with examples for calculating the HRSG temperature profiles after assuming the pinch and approach point temperatures.

Ganapathy, V.

1993-05-01T23:59:59.000Z

275

HIGH TEMPERATURE SUPERCONDUCTORS-SYNTHESIS ... - TMS  

Science Conference Proceedings (OSTI)

... Anaheim, California. HIGH TEMPERATURE SUPERCONDUCTORS- SYNTHESIS, PROCESSING, AND LARGE SCALE APPLICATIONS VII: Characterization ...

276

HIGH TEMPERATURE SUPERCONDUCTORS: III: YBCO Conductor ...  

Science Conference Proceedings (OSTI)

HIGH TEMPERATURE SUPERCONDUCTORS: Session III: YBCO Conductor Development. Sponsored by: Jt: EMPMD/SMD Superconducting Materials ...

277

Contribution to environmental impact of different uses of industrial districts  

SciTech Connect

Industrial districts are highly characteristic of Italian industry structure, with energy implication due to both electrical and thermal energy demand. The present study represents an environmental methodology approach applied to an area in the Tuscany region characterized by the presence of a high net power output cogeneration plant connected to paper mill processes. The cogeneration unit is based on a innovative gas turbine characterized by low atmospheric environmental impact. Additional impact due to cogeneration plant installation was evaluated in comparison with pollutant concentration levels due to existent energy conversion processes, using atmospheric diffusional models. A comparison was also made with respect to pollutant concentration contribute due to ordinary road and highway traffic emissions existent in the area.

Corti, A.; Carnevale, E.

2000-05-01T23:59:59.000Z

278

Variable temperature semiconductor film deposition  

DOE Patents (OSTI)

A method of depositing a semiconductor material on a substrate is disclosed. The method sequentially comprises (a) providing the semiconductor material in a depositable state such as a vapor for deposition on the substrate; (b) depositing the semiconductor material on the substrate while heating the substrate to a first temperature sufficient to cause the semiconductor material to form a first film layer having a first grain size; (c) continually depositing the semiconductor material on the substrate while cooling the substrate to a second temperature sufficient to cause the semiconductor material to form a second film layer deposited on the first film layer and having a second grain size smaller than the first grain size; and (d) raising the substrate temperature, while either continuing or not continuing to deposit semiconductor material to form a third film layer, to thereby anneal the film layers into a single layer having favorable efficiency characteristics in photovoltaic applications. A preferred semiconductor material is cadmium telluride deposited on a glass/tin oxide substrate already having thereon a film layer of cadmium sulfide.

Li, X.; Sheldon, P.

1998-01-27T23:59:59.000Z

279

High temperature catalytic membrane reactors  

DOE Green Energy (OSTI)

Current state-of-the-art inorganic oxide membranes offer the potential of being modified to yield catalytic properties. The resulting modules may be configured to simultaneously induce catalytic reactions with product concentration and separation in a single processing step. Processes utilizing such catalytically active membrane reactors have the potential for dramatically increasing yield reactions which are currently limited by either thermodynamic equilibria, product inhibition, or kinetic selectivity. Examples of commercial interest include hydrogenation, dehydrogenation, partial and selective oxidation, hydrations, hydrocarbon cracking, olefin metathesis, hydroformylation, and olefin polymerization. A large portion of the most significant reactions fall into the category of high temperature, gas phase chemical and petrochemical processes. Microporous oxide membranes are well suited for these applications. A program is proposed to investigate selected model reactions of commercial interest (i.e. dehydrogenation of ethylbenzene to styrene and dehydrogenation of butane to butadiene) using a high temperature catalytic membrane reactor. Membranes will be developed, reaction dynamics characterized, and production processes developed, culminating in laboratory-scale demonstration of technical and economic feasibility. As a result, the anticipated increased yield per reactor pass economic incentives are envisioned. First, a large decrease in the temperature required to obtain high yield should be possible because of the reduced driving force requirement. Significantly higher conversion per pass implies a reduced recycle ratio, as well as reduced reactor size. Both factors result in reduced capital costs, as well as savings in cost of reactants and energy.

Not Available

1990-03-01T23:59:59.000Z

280

Lunar Laser Ranging Contributions to Relativity and Geodesy  

E-Print Network (OSTI)

Lunar laser ranging (LLR) is used to conduct high-precision measurements of ranges between an observatory on Earth and a laser retro-reflector on the lunar surface. Over the years, LLR has benefited from a number of improvements both in observing technology and data modeling, which led to the current accuracy of post-fit residuals of ~2 cm. Today LLR is a primary technique to study the dynamics of the Earth-Moon system and is especially important for gravitational physics, geodesy and studies of the lunar interior. LLR is used to perform high-accuracy tests of the equivalence principle, to search for a time-variation in the gravitational constant, and to test predictions of various alternative theories of gravity. On the geodesy front, LLR contributes to the determination of Earth orientation parameters, such as nutation, precession (including relativistic precession), polar motion, and UT1, i.e. especially to the long-term variation of these effects. LLR contributes to the realization of both the terrestrial and selenocentric reference frames. The realization of a dynamically defined inertial reference frame, in contrast to the kinematically realized frame of VLBI, offers new possibilities for mutual cross-checking and confirmation. Finally, LLR also investigates the processes related to the Moon's interior dynamics. Here, we review the LLR technique focusing on its impact on relativity and give an outlook to further applications, e.g. in geodesy. We present results of our dedicated studies to investigate the sensitivity of LLR data with respect to the relativistic quantities. We discuss the current observational situation and the level of LLR modeling implemented to date. We also address improvements needed to fully utilize the scientific potential of LLR.

Juergen Mueller; James G. Williams; Slava G. Turyshev

2005-09-28T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Method and apparatus for optical temperature measurements  

DOE Patents (OSTI)

A method and apparatus are provided for remotely monitoring temperature. Both method and apparatus employ a temperature probe material having an excitation-dependent emission line whose fluorescence intensity varies directly with temperature whenever excited by light having a first wavelength and whose fluorescence intensity varies inversely with temperature whenever excited by light having a second wavelength. Temperature is measured by alternatively illiminating the temperature probe material with light having the first wavelength and light having the second wavelength, monitoring the intensity of the successive emissions of the excitation-dependent emission line, and relating the intensity ratio of successive emissions to temperature. 3 figs.

Angel, S.M.; Hirschfeld, T.B.

1986-04-22T23:59:59.000Z

282

Quantifying Temperature Effects on Fall Chinook Salmon  

SciTech Connect

The motivation for this study was to recommend relationships for use in a model of San Joaquin fall Chinook salmon. This report reviews literature pertaining to relationships between water temperature and fall Chinook salmon. The report is organized into three sections that deal with temperature effects on development and timing of freshwater life stages, temperature effects on incubation survival for eggs and alevin, and temperature effects on juvenile survival. Recommendations are made for modeling temperature influences for all three life stages.

Jager, Yetta [ORNL

2011-11-01T23:59:59.000Z

283

Cavitation contributes substantially to tensile creep in silicon nitride  

Science Conference Proceedings (OSTI)

During tensile creep of a hot isostatically pressed (HIPed) silicon nitride, the volume fraction of cavities increases linearly with strain; these cavities produce nearly all of the measured strain. In contrast, compressive creep in the same stress and temperature range produces very little cavitation. A stress exponent that increases with stress ({dot {var_epsilon}} {proportional_to} {sigma}{sup n}, 2 < n < 7) characterizes the tensile creep response, while the compressive creep response exhibits a stress dependence of unity. Furthermore, under the same stress and temperature, the material creeps nearly 100 times faster in tension than in compression. Transmission electron microscopy (TEM) indicates that the cavities formed during tensile creep occur in pockets of residual crystalline silicate phase located at silicon nitride multigrain junctions. Small-angle X-ray scattering (SAXS) from crept material quantifies the size distribution of cavities observed in TEM and demonstrates that cavity addition, rather than cavity growth, dominates the cavitation process. These observations are in accord with a model for creep based on the deformation of granular materials in which the microstructure must dilate for individual grains t slide past one another. During tensile creep the silicon nitride grains remain rigid; cavitation in the multigrain junctions allows the silicate to flow from cavities to surrounding silicate pockets, allowing the dilation of the microstructure and deformation of the material. Silicon nitride grain boundary sliding accommodates this expansion and leads to extension of the specimen. In compression, where cavitation is suppressed, deformation occurs by solution-reprecipitation of silicon nitride.

Luecke, W.E.; Wiederhorn, S.M.; Hockey, B.J.; Krause, R.F. Jr.; Long, G.G. [National Institute of Standards and Technology, Gaithersburg, MD (United States)

1995-08-01T23:59:59.000Z

284

EFFECT OF TEMPERATURE AND HUMIDITY ON FORMALDEHYDE EMISSIONS IN TEMPORARY HOUSING UNITS  

SciTech Connect

The effect of temperature and humidity on formaldehyde emissions from samples collected from temporary housing units (THUs) was studied. The THUs were supplied by the U.S Federal Emergency Management Administration (FEMA) to families that lost their homes in Louisiana and Mississippi during the Hurricane Katrina and Rita disasters. Based on a previous study 1, 2, four of the composite wood surface materials that dominated contributions to indoor formaldehyde were selected to analyze the effects of temperature and humidity on the emission factors. Humidity equilibration experiments were carried out on two of the samples to determine how long the samples take to equilibrate with the surrounding environmental conditions. Small chamber experiments were then conducted to measure emission factors for the four surface materials at various temperature and humidity conditions. The samples were analyzed for formaldehyde via high performance liquid chromatography. The experiments showed that increases in temperature or humidity contributed to an increase in emission factors. A linear regression model was built using natural log of percentage relative humidity (RH) and inverse of temperature (in K) as predictor variables, and natural log of emission factors as the target variable. The coefficients of both inverse temperature and log relative humidity with log emission factor were found to be statistically significant for all the samples at the 95percent confidence level. This study should assist to retrospectively estimate indoor formaldehyde exposures of occupants of temporary housing units (THUs).

Parthasarathy, Srinandini; Maddalena, Randy L.; Russell, Marion L.; Apte, Michael G.

2010-04-01T23:59:59.000Z

285

Localized temperature stability in Low Temperature Cofired Ceramics (LTCC).  

Science Conference Proceedings (OSTI)

The base dielectrics of commercial low temperature cofired ceramics (LTCC) systems have a temperature coefficient of resonant frequency ({tau}{sub f}) in the range -50 {approx} -80 ppm/C. In this research we explored a method to realize zero or near zero {tau}{sub f} resonators by incorporating {tau}{sub f} compensating materials locally into a multilayer LTCC structure. To select composition for {tau}{sub f} adjustment, {tau}{sub f} compensating materials with different amount of titanates were formulated, synthesized, and characterized. Chemical interactions and physical compatibility between the {tau}{sub f} modifiers and the host LTCC dielectrics were investigated. Studies on stripline (SL) resonator panels with multiple compensating dielectrics revealed that: 1) compositions using SrTiO{sub 3} provide the largest {tau}{sub f} adjustment among titanates, 2) the {tau}{sub f} compensation is proportional to the amount of SrTiO{sub 3} in compensating materials, as well as the thickness of the compensating layer, and 3) the most effective {tau}{sub f} compensation is achieved when the compensating dielectric is integrated next to the SL. Using the effective dielectric constant of a heterogeneous layered dielectric structure, results from Method of Momentum (MoM) electromagnetic simulations are consistent with the experimental observations.

Dai, Steven Xunhu; Hsieh, Lung-Hwa.

2012-04-01T23:59:59.000Z

286

CONFINEMENT OF HIGH TEMPERATURE PLASMA  

DOE Patents (OSTI)

The confinement of a high temperature plasma in a stellarator in which the magnetic confinement has tended to shift the plasma from the center of the curved, U-shaped end loops is described. Magnetic means are provided for counteracting this tendency of the plasma to be shifted away from the center of the end loops, and in one embodiment this magnetic means is a longitudinally extending magnetic field such as is provided by two sets of parallel conductors bent to follow the U-shaped curvature of the end loops and energized oppositely on the inside and outside of this curvature. (AEC)

Koenig, H.R.

1963-05-01T23:59:59.000Z

287

Method and apparatus for optical temperature measurement  

DOE Patents (OSTI)

A temperature probe and a method for using said probe for temperature measurements based on changes in light absorption by the probe are disclosed. The probe comprises a first and a second optical fiber that carry light to and from the probe, and a temperature sensor material, the absorbance of which changes with temperature, through which the light is directed. Light is directed through the first optical fiber, passes through the temperature sensor material, and is transmitted by a second optical fiber from the material to a detector. Temperature-dependent and temperature-independent factors are derived from measurements of the transmitted light intensity. For each sensor material, the temperature T is a function of the ratio, R, of these factors. The temperature function f(R) is found by applying standard data analysis techniques to plots of T versus R at a series of known temperatures. For a sensor having a known temperature function f(R) and known characteristic and temperature-dependent factors, the temperature can be computed from a measurement of R. Suitable sensor materials include neodymium-doped borosilicate glass, accurate to [+-]0.5 C over an operating temperature range of about [minus]196 C to 400 C; and a mixture of D[sub 2]O and H[sub 2]O, accurate to [+-]0.1 C over an operating range of about 5 C to 90 C. 13 figs.

O' Rourke, P.E.; Livingston, R.R.; Prather, W.S.

1994-09-20T23:59:59.000Z

288

NETL: Ambient Monitoring - Contribution of Semi-volatile Organic Material  

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

Semi-volatile Organics in PM Semi-volatile Organics in PM This project is a cooperative effort between Brigham Young University (BYU) and researchers from the DOE-NETL Office of Science and and Engineering Research to determine the contribution of semi-volatile particulate organic compounds (SVOC) to total ambient suspended fine particulate mass at the NETL-Pittsburgh air monitoring facility. Project funding comes from DOE‘s University Coal Research (UCR) program. The hypothesis of the project is that fine particulate mass will be significantly under-determined in urban environments using single filter samplers such as the PM2.5 Federal Reference Method (FRM) because of the loss of semi-volatile organic compounds (SVOC) from the particles during sampling and storage. It is postulated that fine particulate mass, including the semi-volatile fine particulate organic species, are an appropriate surrogate for the components of fine particles which are associated with observed mortality and morbidity effects in epidemiological studies. Further, it is postulated that the most important fraction of the semi-volatile organic material with respect to exacerbation of health problems will be semi-volatile secondary compounds formed from reactions of volatile organic material with ozone and nitrogen oxides. Under-determination of these semi-volatile species will tend to over emphasize the importance of non-volatile fine particulate components such as sulfate or may reduce the significance of correlations with measured health effects.

289

Estimating Hydro's Contribution to the control of Greenhouse Gases  

Science Conference Proceedings (OSTI)

One of the environmental effects of hydropower operation that should be evaluated in licensing decisions is the general benefit to air quality. Hydropower's contribution to the reduction of greenhouse gas (GHG) emissions is an increasingly important component of these air quality benefits. The Oak Ridge Competitive Electricity Dispatch (ORCED) computer model is one method that can be used to quantify these benefits. ORCED provides a relatively simple method that is applicable and cost-effective and that has been successfully applied in other GHG studies. ORCED can be used to calculate a region-specific value of the carbon intensity factor (CIF, kg carbon/MWh) that would be associated with likely replacement power (i.e., a regionally representative mix of coal, gas, and other energy sources). The project's plant factor and operational mode (e.g, baseload versus peaking) can also be incorporated in the CIF calculation. The resulting parameter can then be multiplied by the energy output of the hydropower project that is being analyzed to estimate a CO{sub 2} emission value that is avoided by the project's operation.

Sale, Michael J [ORNL; Hadley, Stanton W [ORNL

2002-01-01T23:59:59.000Z

290

Employer`s contributions to the training of professional statisticians  

SciTech Connect

Statistical science provides important techniques for decision making in a large variety of fields of human endeavor mainly through statistical practice. According to Deming (1965), ``Statistical practice is mostly a collaborative venture between (professional) statisticians and experts in subject-matter (area).`` The professional statistician must be properly trained in areas of statistical science most suited to the discipline in which the applications are made. Due to a large variety of applications. The education of a professional statistician by universities can only be very general. Higher education provides the theoretical basis of statistical science whereas the specific expertise needed by the professional statistician is given by the application areas. In this paper, the authors review the approach of academic programs which are geared towards applications and discuss some of the innovative strategies for preparing statisticians as consultants in industry and business. A survey (census) of statisticians at the national laboratories of the US Department of Energy was made to assess their training by universities and to get a broad view of additional training which has brought them to their present professional status. A particular interest is the extent to which employers have contributed to the training of statisticians. A few recommendations are made which may serve to improve the future training of statisticians for applied collaborative work by universities and employers.

Rustagi, J.S. [Ohio State Univ., Columbus, OH (United States). Statistics Dept.; Wright, T. [Oak Ridge National Lab., TN (United States). Mathematical Sciences Section]|[Bureau of the Census, Washington, DC (United States)

1995-07-01T23:59:59.000Z

291

Reevaluation of the Hadronic Contribution to $?(M_Z^2)$  

E-Print Network (OSTI)

We reevaluate the hadronic part of the electromagnetic vacuum expectation value using the standard dispersion integral approach that utilizes the hadronic cross section measured in $\\ee$ experiments as input. Previous analyses are based upon point-by-point trapezoidal integration which does not treat experimental errors in an optimal way. We use a technique that weights the experimental inputs by their stated uncertainties, includes correlations, and incorporates some refinements. We find the five-flavor hadronic contribution to the fractional change in the electromagnetic coupling constant at $q^2=M_Z^2$, $\\Delta\\alpha(MZ)$, to be $0.02752\\pm0.00046$, which leads to a value of the electromagnetic coupling constant, $\\alpha^{-1}(M_Z^2) = 128.96\\pm0.06$. [This is an updated version of SLAC-PUB-6710 (hep-ph/9411353) which fixes a small bias in the fitting procedure (1/3 of the change) and incorporates a new and precise cross section measurement near charm threshold (2/3 of the change).

Morris L. Swartz

1995-09-07T23:59:59.000Z

292

Fault Current Contribution from Single-Phase PV Inverters  

DOE Green Energy (OSTI)

A significant increase in photovoltaic (PV) system installations is expected to come on line in the near future and as the penetration level of PV increases, the effect of PV may no longer be considered minimal. One of the most important attributions of additional PV is what effect this may have on protection systems. Protection engineers design protection systems to safely eliminate faults from the electric power system. One of the new technologies recently introduced into the electric power system are distributed energy resources (DER). Currently, inverter-based DER contributes very little to the power balance on all but a few utility distribution systems. As DER become prevalent in the distribution system, equipment rating capability and coordination of protection systems merit a closer investigation. A collaborative research effort between the National Renewable Energy Laboratory (NREL) and Southern California Edison (SCE) involved laboratory short-circuit testing single-phase (240 VAC) residential type (between 1.5 and 7kW) inverters. This paper will reveal test results obtained from these short-circuit tests.

Keller, J.; Kroposki, B.; Bravo, R.; Robles, S.

2011-01-01T23:59:59.000Z

293

LOW TEMPERATURE CATHODE SUPPORTED ELECTROLYTES  

DOE Green Energy (OSTI)

This report represents a summary of the work carried out on this project which started October 1999 and ended March 2003. A list of the publications resulting from the work are contained in Appendix A. The most significant achievements are: (1) Dense nanocrystalline zirconia and ceria films were obtained at temperatures < 400 C. (2) Nanocrystalline films of both ceria and zirconia were characterized. (3) We showed that under anodic conditions 0.5 to 1 micron thick nanocrystalline films of Sc doped zirconia have sufficient electronic conductivity to prevent them from being useful as an electrolyte. (4) We have developed a process by which dense 0.5 to 5 micron thick dense films of either YSZ or ceria can be deposited on sintered porous substrates which serve as either the cathode or anode at temperatures as low as 400 C. (5) The program has provided the research to produce two PhD thesis for students, one is now working in the solid oxide fuel cell field. (6) The results of the research have resulted in 69 papers published, 3 papers submitted or being prepared for publication, 50 oral presentations and 3 patent disclosures.

Harlan U. Anderson; Fatih Dogan; Vladimir Petrovsky

2003-03-31T23:59:59.000Z

294

Abstract - Temperature Dependent Interface Energy and Mobility ...  

Science Conference Proceedings (OSTI)

Register as a New User ... splitting the contributions of grain boundary energy and mobility to grain growth needed as experimental input to growth simulations.

295

The Effect of Tropical Atlantic Heating Anomalies upon GCM Rain Forecasts over the Americas  

Science Conference Proceedings (OSTI)

Severe droughts occurred over eastern sections of North America and central sections of South America in 1986 and 1988. We summarize data suggesting that both periods were characterized by above-normal tropical Atlantic sea surface temperatures ...

Julio Buchmann; Jan Paegle; Lawrence E. Buja; Robert E. Dickinson

1990-02-01T23:59:59.000Z

296

An Analysis of the Large-Scale Climate Anomalies Associated with the Snowstorms Affecting China in January 2008  

Science Conference Proceedings (OSTI)

Extraordinarily frequent and long-lasting snowstorms affected China in January 2008, causing above-normal precipitation, below-normal temperature, and severe icing conditions over central–southern China. These snowstorms were closely linked to ...

Min Wen; Song Yang; Arun Kumar; Peiqun Zhang

2009-03-01T23:59:59.000Z

297

EFFECT OF GEOMETRY AND OPERATING PARAMETERS ON SIMULATED SOFC STACK TEMPERATURE UNIFORMITY  

Science Conference Proceedings (OSTI)

A uniform temperature field is desirable in the solid oxide fuel cell stack to avoid local hot regions that contribute to material degradation, thermal stresses, and differences in electrochemical performance. Various geometric and operational design changes were simulated by numerical modeling of co-flow and counter-flow multi-cell stacks, and the effects on stack maximum temperature, stack temperature difference, and maximum cell temperature difference were characterized. The results showed that 40-60% on-cell steam reforming of methane and a reduced reforming rate of 25-50% of the nominal rate was beneficial for a more uniform temperature field. Fuel exhaust recycling up to 30% was shown to be advantageous for reforming fuels and co-flow stacks with hydrogen fuel, but counter-flow stacks with hydrogen fuel showed higher temperature differences. Cells with large aspect ratios showed a more uniform temperature response due to either the strong influence of the inlet gas temperatures or the greater thermal exchange with the furnace boundary condition. Improved lateral heat spreading with thicker interconnects was demonstrated, but greater improvements towards a uniform thermal field for the same amount of interconnect mass could be achieved using thicker heat spreader plates appropriately distributed along the stack height.

Koeppel, Brian J.; Lai, Canhai; Khaleel, Mohammad A.

2011-08-10T23:59:59.000Z

298

Show me the money! The geography of contributions to California's Proposition 8  

E-Print Network (OSTI)

online maps), is where this money will come from, how muchShow me the money! The geography of contributions toSeries Show me the money! The geography of contributions to

Shin, Michael

2009-01-01T23:59:59.000Z

299

R&D 100: Lab Researchers Contribute to Public Safety | Department...  

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

Lab Researchers Contribute to Public Safety R&D 100: Lab Researchers Contribute to Public Safety August 16, 2013 - 3:25pm Addthis Multi-Mode Passive Detection System 1 of 3...

300

Impact of Subsurface Temperature Variability on Surface Air Temperature Variability: An AGCM Study  

Science Conference Proceedings (OSTI)

Anomalous atmospheric conditions can lead to surface temperature anomalies, which in turn can lead to temperature anomalies in the subsurface soil. The subsurface soil temperature (and the associated ground heat content) has significant memory—...

Sarith P. P. Mahanama; Randal D. Koster; Rolf H. Reichle; Max J. Suarez

2008-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Estimating Summer Design Temperatures from Daily Maximum Temperatures in New Mexico  

Science Conference Proceedings (OSTI)

Many climatological locations report only maximum and minimum temperatures. However, in certain applications, such as estimation of design temperatures, the frequency distribution of hourly temperatures is required. For this reason, a method is ...

Kenneth E. Kunkel

1986-04-01T23:59:59.000Z

302

Temperature Inversions in the Subarctic North Pacific  

Science Conference Proceedings (OSTI)

Hydrographic data from the World Ocean Database 2001 and Argo profiling floats were analyzed to study temperature inversions in the subarctic North Pacific Ocean. The frequency distribution of temperature inversions [F(t-inv)] at a resolution of ...

Hiromichi Ueno; Ichiro Yasuda

2005-12-01T23:59:59.000Z

303

Errors in Radio Acoustic Sounding of Temperature  

Science Conference Proceedings (OSTI)

With the use of simultaneous correction for radial wind, the accuracy of radio acoustic sounding systems for the measurement of temperature has been substantially improved. The temperature accuracy can now be affected by a number of factors that ...

Wayne M. Angevine; W. L. Ecklund

1994-06-01T23:59:59.000Z

304

Recent Developments in High Temperature Superconductivity  

E-Print Network (OSTI)

New material systems and the experimental progress of high temperature superconductivity are briefly reviewed. We examine both oxides and non-oxides which exhibit stable and/or unstable superconductivity at high temperatures.

Hor, P. H.

1988-09-01T23:59:59.000Z

305

A Universal Scale of Apparent Temperature  

Science Conference Proceedings (OSTI)

Based on the total thermal resistance required by a human model to effect equilibrium, a scale is prepared showing apparent temperature for any combination of dry-bulb temperature, vapor pressure, wind speed and extra radiation likely to be ...

Robert G. Steadman

1984-12-01T23:59:59.000Z

306

High-temperature thermocouples and related methods  

DOE Patents (OSTI)

A high-temperature thermocouple and methods for fabricating a thermocouple capable of long-term operation in high-temperature, hostile environments without significant signal degradation or shortened thermocouple lifetime due to heat induced brittleness.

Rempe, Joy L. (Idaho Falls, ID); Knudson, Darrell L. (Firth, ID); Condie, Keith G. (Idaho Falls, ID); Wilkins, S. Curt (Idaho Falls, ID)

2011-01-18T23:59:59.000Z

307

Specification of Wintertime North American Surface Temperature  

Science Conference Proceedings (OSTI)

The extent to which wintertime North American surface temperature can be specified based on simultaneous sea surface temperature (SST) is quantified for the period 1982–98. The term specification indicates that the predictor and predictands are ...

Timothy DelSole; J. Shukla

2006-06-01T23:59:59.000Z

308

Mesoscale Temperature Fluctuations and Polar Stratospheric Clouds  

Science Conference Proceedings (OSTI)

Remote sensing measurements of temperature fluctuations on isentropic surfaces, as well as in situ measurements, are used to show that even high-resolution trajectory calculations seriously underestimate the rate of change of temperature ...

D. M. Murphy; B. L. Gary

1995-05-01T23:59:59.000Z

309

Dewpoint Temperature Prediction Using Artificial Neural Networks  

Science Conference Proceedings (OSTI)

Dewpoint temperature, the temperature at which water vapor in the air will condense into liquid, can be useful in estimating frost, fog, snow, dew, evapotranspiration, and other meteorological variables. The goal of this study was to use ...

D. B. Shank; G. Hoogenboom; R. W. McClendon

2008-06-01T23:59:59.000Z

310

A Comparison of Sea Surface Temperature Climatologies  

Science Conference Proceedings (OSTI)

Six global and two regional Pacific monthly sea surface temperature climatologies were compared. The climatologies were based on either surface marine observations or oceanographic cast (surface plus subsurface temperatures) observations. ...

Richard W. Reynolds

1983-03-01T23:59:59.000Z

311

The Underway Conductivity–Temperature–Depth Instrument  

Science Conference Proceedings (OSTI)

The development of the Underway Conductivity–Temperature–Depth (UCTD) instrument is motivated by the desire for inexpensive profiles of temperature and salinity from underway vessels, including volunteer observing ships (VOSs) and research ...

Daniel L. Rudnick; Jochen Klinke

2007-11-01T23:59:59.000Z

312

Temperature Advection by Tropical Instability Waves  

Science Conference Proceedings (OSTI)

A numerical model of the tropical Pacific Ocean is used to investigate the processes that cause the horizontal temperature advection of tropical instability waves (TIWs). It is found that their temperature advection cannot be explained by the ...

Markus Jochum; Raghu Murtugudde

2006-04-01T23:59:59.000Z

313

Homogenization of Temperature Series via Pairwise Comparisons  

Science Conference Proceedings (OSTI)

An automated homogenization algorithm based on the pairwise comparison of monthly temperature series is described. The algorithm works by forming pairwise difference series between serial monthly temperature values from a network of observing ...

Matthew J. Menne; Claude N. Williams Jr.

2009-04-01T23:59:59.000Z

314

Homogenization of Daily Temperatures over Canada  

Science Conference Proceedings (OSTI)

A method to homogenize daily maximum and minimum temperatures over Canada is presented. The procedure is based on previously defined monthly adjustments derived from step changes identified in annual Canadian temperature series. Daily ...

Lucie A. Vincent; X. Zhang; B. R. Bonsal; W. D. Hogg

2002-06-01T23:59:59.000Z

315

Performance of Compression Fittings at Elevated Temperatures  

Science Conference Proceedings (OSTI)

One of the alternatives for increasing power flow on an existing transmission line is to raise the operating temperature of its conductor. The effects of high operating temperature on the conductor, however, include loss of conductor strength and reduction in conductor clearance to ground. The high temperature also affects the short- and long-term performance of the conductor connections and conductor accessories. EPRI’s base-funded project “Effect of High-Temperature Cycling on Conductor Systems” provid...

2009-08-05T23:59:59.000Z

316

Carbon nanotube temperature and pressure sensors  

Science Conference Proceedings (OSTI)

The present invention, in one embodiment, provides a method of measuring pressure or temperature using a sensor including a sensor element composed of a plurality of carbon nanotubes. In one example, the resistance of the plurality of carbon nanotubes is measured in response to the application of temperature or pressure. The changes in resistance are then recorded and correlated to temperature or pressure. In one embodiment, the present invention provides for independent measurement of pressure or temperature using the sensors disclosed herein.

Ivanov, Ilia N; Geohegan, David Bruce

2013-10-29T23:59:59.000Z

317

Reactive Melt Infiltration of Ultrahigh Temperature Refractory ...  

Science Conference Proceedings (OSTI)

Carbon Fiber Reinforced Ultra-High-Temperature Ceramic Matrix Composites ... Nanoscale Characterization of Polymer Precursor Derived Silicon Carbide with ...

318

Compact High-Temperature Superconducting Cable Wins ' ...  

Science Conference Proceedings (OSTI)

Compact High-Temperature Superconducting Cable Wins 'R&D 100' Award. From NIST Tech Beat: June 22, 2011. ...

2011-07-06T23:59:59.000Z

319

Determining Outdoor CPV Cell Temperature (Presentation)  

DOE Green Energy (OSTI)

An accurate method is needed for determining cell temperature when measuring CPV modules outdoors. It has been suggested that cell temperature can be calculated though a procedure that shutters sunlight to the cells while measuring the transients in open-circuit voltage (Voc) and heat sink temperature. This presentation documents application of this shutter procedure to multiple CPV modules at NREL. The challenges and limitations are presented along with an alternate approach to measuring CPV cell operating temperature.

Muller, M.

2011-04-01T23:59:59.000Z

320

High temperature electronics application in well logging  

DOE Green Energy (OSTI)

Some limitations, problems, and needs are briefly reviewed for neutron logging tools used in high-temperature geothermal environments. (ACR)

Traeger, R.K.; Lysne, P.C.

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Determination of Hydrogen Peak Temperatures and Trapping ...  

Science Conference Proceedings (OSTI)

Presentation Title, Determination of Hydrogen Peak Temperatures and Trapping Energies of Various Lattice Defects In Iron Using Thermal Desorption ...

322

Ion temperature gradient instability and anomalous transport  

SciTech Connect

This report discusses experiments in ion temperature gradient instability and anomalous transport in the CLM steady state device. (LSP).

Sen, A.K.

1991-08-01T23:59:59.000Z

323

METHOD OF CONTROLLING TEMPERATURE OF A THERMOELECTRIC ...  

A method of controlling the temperature of a thermoelectric generator ... Advanced Materials; Biomass and Biofuels; Building Energy Efficiency; Electricity Transmission;

324

High Temperature Strain Gages for SOFC Application  

DOE Green Energy (OSTI)

This presentation discusses the investigation/extension of high temperature strain gage applications sensors to SOFC applications.

Pineault, R.L.; Johnson, C.; Gemmen, R.S.; Gregory, O.; You, T.

2005-01-27T23:59:59.000Z

325

HIGH TEMPERATURE SUPERCONDUCTORS: IV: BSCCO and ...  

Science Conference Proceedings (OSTI)

HIGH TEMPERATURE SUPERCONDUCTORS: Session IV: BSCCO and TBCCO Conductor Development. Sponsored by: Jt. EMPMD/SMD Superconducting ...

326

Determining Outdoor CPV Cell Temperature: Preprint  

DOE Green Energy (OSTI)

An accurate method is needed for determining cell temperature when measuring CPV modules outdoors. It has been suggested that cell temperature can be calculated though a procedure that shutters sunlight to the cells while measuring the transients in open-circuit voltage (Voc) and heat sink temperature. This paper documents application of this shutter procedure to multiple CPV modules at NREL. The challenges and limitations are presented along with an alternate approach to measuring CPV cell operating temperature.

Muller, M.; Deline, C.; Marion, B.; Kurtz, S.; Bosco, N.

2011-07-01T23:59:59.000Z

327

Noise Analysis of Statham Temperature Chamber  

SciTech Connect

A procedure is described to subdue the noise made by the LN2 control valve on a Statham Temperature Chamber.

Mielke, R. L.

1973-01-15T23:59:59.000Z

328

Simulation of Top Oil Temperature for Transformers  

E-Print Network (OSTI)

Simulation of Top Oil Temperature for Transformers Masters Thesis and Final Project Report Power-Oil Temperature for Transformers Thesis and Final Report Yong Liang PSERC Publication 01-21 February 2001 #12 for the PSERC project "On-Line Peak Loading of Substation Distribution Transformers Through Accurate Temperature

329

High temperature superconducting fault current limiter  

DOE Patents (OSTI)

A fault current limiter for an electrical circuit is disclosed. The fault current limiter includes a high temperature superconductor in the electrical circuit. The high temperature superconductor is cooled below its critical temperature to maintain the superconducting electrical properties during operation as the fault current limiter. 15 figs.

Hull, J.R.

1997-02-04T23:59:59.000Z

330

Optical temperature sensor using thermochromic semiconductors  

DOE Patents (OSTI)

Optical thermometry is a growing technological field which exploits the ability of certain materials to change their optical properties with temperature. A subclass of such materials are those which change their color as a reversible and reproducible function of temperature. These materials are thermochromic. This invention is a composition to measure temperature utilizing thermochromic semiconductors.

Kronberg, J.W.

1994-01-01T23:59:59.000Z

331

Room temperature nano- and microstructure photon detectors  

Science Conference Proceedings (OSTI)

The development of room temperature infrared (IR) detectors for wavelengths beyond NIR will open up many applications that are currently limited due to cooling requirements. Three approaches are discussed, which show promise for room temperature IR detection. ... Keywords: Infrared, PbS quantum dot, Room temperature detector, Split-off band, Tunneling quantum dot

A. G. U. Perera; P. V. V. Jayaweera; G. Ariyawansa; S. G. Matsik; K. Tennakone; M. Buchanan; H. C. Liu; X. H. Su; P. Bhattacharya

2009-03-01T23:59:59.000Z

332

Temperature effect on the small-to-large crossover length-scale of hydrophobic hydration  

E-Print Network (OSTI)

The thermodynamics of hydration changes gradually from entropic for small solutes to enthalpic for large ones. The small-to-large crossover lengthscale of hydrophobic hydration depends on the thermodynamic conditions of the solvent such as temperature, pressure, presence of additives, etc... We attempt to shed some light on the temperature dependence of the crossover lengthscale by using a probabilistic approach to water hydrogen bonding that allows one to obtain an analytic expression for the number of bonds per water molecule as a function of both its distance to a solute and solute radius. Incorporating that approach into the density functional theory, one can examine the solute size effects on its hydration over the entire small-to-large lengthscale range at different temperatures. Knowing the dependence of the hydration free energy on temperature and solute size, one can obtain its enthalpic and entropic contributions as functions of temperature and solute size. These function can provide interesting insight into the temperature dependence of the crossover lengthscale of hydrophobic hydration. The model was applied to the hydration of spherical particles of various radii in water in the temperature range from T=293.15 K to T=333.15 K. The model predictions for the temperature dependence of the hydration free energy of small hydrophobes are consistent with the experimental and simulational data. Three alternative definitions for the small-to-large crossover length-scale of hydrophobic hydration are proposed, and their temperature dependence is obtained. Depending on the definition and temperature, the small-to-large crossover in the hydration mechanism is predicted to occur for hydrophobes of radii from one to several nanometers. Independent of its definition, the crossover length-scale is predicted to decrease with increasing temperature.

Yuri S. Djikaev; Eli Ruckenstein

2013-03-19T23:59:59.000Z

333

Layering and temperature-dependent magnetization and anisotropy of naturally produced Ni/NiO multilayers  

Science Conference Proceedings (OSTI)

Ni/NiO multilayers were grown by magnetron sputtering at room temperature, with the aid of the natural oxidation procedure. That is, at the end of the deposition of each single Ni layer, air is let to flow into the vacuum chamber through a leak valve. Then, a very thin NiO layer ({approx}1.2 nm) is formed. Simulated x-ray reflectivity patterns reveal that layering is excellent for individual Ni-layer thickness larger than 2.5 nm, which is attributed to the intercalation of amorphous NiO between the polycrystalline Ni layers. The magnetization of the films, measured at temperatures 5-300 K, has almost bulk-like value, whereas the films exhibit a trend to perpendicular magnetic anisotropy (PMA) with an unusual significant positive interface anisotropy contribution, which presents a weak temperature dependence. The power-law behavior of the multilayers indicates a non-negligible contribution of higher order anisotropies in the uniaxial anisotropy. Bloch-law fittings for the temperature dependence of the magnetization in the spin-wave regime show that the magnetization in the multilayers decreases faster as a function of temperature than the one of bulk Ni. Finally, when the individual Ni-layer thickness decreases below 2 nm, the multilayer stacking vanishes, resulting in a dramatic decrease of the interface magnetic anisotropy and consequently in a decrease of the perpendicular magnetic anisotropy.

Pappas, S. D.; Trachylis, D.; Velgakis, M. J. [Laboratory of High-Tech Materials, School of Engineering, University of Patras, 26504 Patras (Greece); Kapaklis, V.; Joensson, P. E.; Papaioannou, E. Th. [Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala (Sweden); Delimitis, A. [Chemical Process Engineering Research Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 57001 Thermi, Thessaloniki (Greece); Poulopoulos, P. [Laboratory of High-Tech Materials, School of Engineering, University of Patras, 26504 Patras (Greece); Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, D-14195 Berlin-Dahlem (Germany); Materials Science Department, University of Patras, 26504 Patras (Greece); Fumagalli, P. [Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, D-14195 Berlin-Dahlem (Germany); Politis, C. [Laboratory of High-Tech Materials, School of Engineering, University of Patras, 26504 Patras (Greece); Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, Texas 76019 (United States)

2012-09-01T23:59:59.000Z

334

Comparison of temperature and humidity profiles with elastic-backscatter lidar data  

SciTech Connect

This contribution analyzes elastic-backscatter lidar data and temperature and humidity profiles from radiosondes acquired in Barcelona in July 1992. Elastic-backscatter lidar data reveal the distribution of aerosols within the volume of atmosphere scanned. By comparing this information with temperature and humidity profiles of the atmosphere at a similar time, we are able to asses de relationship among aerosol distribution and atmospheric stability or water content, respectively. Comparisons have shown how lidar`s revealed layers of aerosols correspond to atmospheric layers with different stability condition and water content.

Soriano, C. [Universidad Politecnica de Cataluna, Barcelona (Spain)]|[Los Alamos National Lab., NM (United States); Buttler, W.T. [Los Alamos National Lab., NM (United States); Baldasano, J.M. [Universidad Politecnica de Cataluna, Barcelona (Spain)

1995-04-01T23:59:59.000Z

335

The Arabic Lexical Contributions to the English Language  

E-Print Network (OSTI)

The Arabic lexical contributions to the English language (2nd ed.) contains extensive additions to the main entries and their data from the original 1994 edition by Harrassowitz Verlag of Wiesbaden. It continues Cannon’s series on loans into English, refining the principles and procedures developed in the preceding German, Arabic, and Japanese books, and comprehensive articles on Mandarin Chinese, Malaysian, Spanish Turkish, and Welsh loans in English. The chief purpose is to advance the historical study of comprehensive, mainly lexical borrowing between languages in contact. The ancillary purpose is to show how a collected corpus of loans can shed light on multiple disciplines and the cultures represented therein. This wide-ranging 2007 book is the largest, most up-to-date collection of English words and multiword lexical units borrowed from Arabic, directly or sometimes through a mediating language such as Hindi or Urdu, Persian, or Turkish. All general English dictionaries were searched, particularly relying on electronic retrieval from the second edition of the Oxford English dictionary, Random House Webster’s unabridged dictionary, New shorter Oxford English dictionary, and Webster’s third international dictionary of the English language (W3’s two earlier editions were manually searched, as were smaller general collections, new-word collections, and college editions). Each dictionary entry gives its first known recorded date in written English, its semantic field, any modern variant forms and labels, etymology including ‘native’ and English meaning(s) in historical order when determinable, derivative forms including functional shifts and compounds, sometimes a grammatical note, the principal symbolized sources where the loan is recorded, and the degree of naturalization based on the procedure developed by Cannon. The Introduction and an essay that analyzes the loans by history and semantics are mainly reproduced from the 1994 edition, treating the 35 semantic fields so as to throw light on the individual field and make the book useful for specialists in religion, cloth(ing), the military, politics, rugs, botany, language, and linguistics, ethnology, etc. So is the final essay, which analyzes the data linguistically, with special attention to language sources, grammar, and variant forms, in order to cast more light on how languages interact and ultimately influence each other’s culture.

Cannon, Garland; Kaye, Alan S.

2007-03-05T23:59:59.000Z

336

Article published in Geothermics 47 (2013) 69-79 http://dx.doi.org/10.1016/j.geothermics.2013.02.005 1 Geothermal contribution to the energy mix of a heating  

E-Print Network (OSTI)

and projected district heating networks. This article focuses on a remaining issue: estimating the geothermal contribution to the energy mix of a district heating network over time when using an ATES. This result would and providing energy to a new low-temperature district heating network heating 7,500 housing-equivalents. Non

Paris-Sud XI, Université de

337

Automated flow-temperature-humidity control system  

SciTech Connect

An automated system that controls air flow, temperature, and humidity was developed from a commercially available temperature-humidity indicator and a specially built flow-temperature-humidity control module. Parameters are set using direct-reading dials on the control module. The air flow is maintained using a mass-flow controller while process controllers connected to the indicator regulate humidity and temperature. The system will run indefinitely without need for operator intervention. If the module and indicator are calibrated properly, accurate air flows (+-2% of full scale), temperatures (+-0.3/sup 0/C), and humidities (+-2% RH) can be achieved.

Nelson, G.O.; Taylor, R.D.

1980-10-01T23:59:59.000Z

338

Materials for low temperature SOFCs.  

Science Conference Proceedings (OSTI)

Solid oxide fuel cells (SOFCs) are one of the potentially most efficient and clean energy conversion technologies for electric utility applications. Laboratory cells have shown extraordinary durability, and actual utility-scale prototypes have worked very well. The main obstacle to commercialization has been the relatively high manufacturing cost. To reduce these costs, efforts have been underway for several years to adapt manufacturing technology from the semiconductor industry to the SOFCs; however, tape casting, screen printing and similar methods are more applicable to planar configurations than to the more proven tubular ones. In planar cells the bipolar plate and edge seals become more critical elements, and material selection may have repercussions for the other fuel cell components. Ferritic stainless steel bipolar plates may be a good choice for reducing the cost of the stacks, but ferritic steels oxidize rapidly at temperatures above 800 C. Inexorably, one is led to the conclusion that anodes, cathodes and electrolytes operating below 800 C need to be found. Another motivation for developing planar SOFCs operating at reduced temperature is the prospect of new non-utility applications. The U.S. Department of Energy has initiated the Solid State Energy Conversion Alliance (SECA) program for developing small modular stacks ranging in capacity from 5 to 10 kW{sup (1)}. This size range meets the power requirements of auxiliary power units for heavy and perhaps even light-duty vehicles, and also for remote stationary applications. In terms of electric capacity, the distributed electric utility market may well exceed the potential market for APUs, but the number of units produced could be higher for the latter, yielding cost benefits related to mass production. On the other hand, the fuel for use in transportation or remote stationary applications will consist of gasoline, diesel or propane, which contain higher sulfur levels than natural gas. Anodes with some resistance to sulfur poisoning would be desirable. Also, during the more frequent shutdowns and startups in these applications, the anodes may get exposed to air. Typical nickel-based SOFC anodes may not tolerate air exposure very well and may need to be modified. Argonne National Laboratory is engaged in developing new materials options for SECA applications, as discussed here.

Krumpelt, M.; Ralph, J.; Cruse, T.; Bae, J.-M.

2002-08-02T23:59:59.000Z

339

Low temperature sodium-beta battery  

SciTech Connect

A battery that will operate at ambient temperature or lower includes an enclosure, a current collector within the enclosure, an anode that will operate at ambient temperature or lower within the enclosure, a cathode that will operate at ambient temperature or lower within the enclosure, and a separator and electrolyte within the enclosure between the anode and the cathode. The anode is a sodium eutectic anode that will operate at ambient temperature or lower and is made of a material that is in a liquid state at ambient temperature or lower. The cathode is a low melting ion liquid cathode that will operate at ambient temperature or lower and is made of a material that is in a liquid state at ambient temperature or lower.

Farmer, Joseph C

2013-11-19T23:59:59.000Z

340

Low temperature hydrothermal destruction of organics in Hanford tank wastes  

SciTech Connect

The objective of this work is to evaluate and develop a low temperature hydrothermal process (HTP) for the destruction of organics that are present wastes temporarily stored in underground tanks at the Hanford Site. Organic compounds contribute to tank waste safety issues, such as hydrogen generation. Some organic compounds act as complexants, promoting the solubility of radioactive constituents such as {sup 90}Sr and {sup 241}Am, which is undesirable for waste pretreatment processing. HTP is thermal-chemical autogenous processing method that is typically operated between 250{degrees}C and 375{degrees}C and approximately 200 atm. Testing with simulated tank waste, containing a variety of organics has been performed. The distribution of strontium, cesium and bulk metals between the supernatant and solid phases as a function of the total organic content of the waste simulant will be presented. Test results using simulant will be compared with similar tests conducted using actual radioactive waste.

Orth, R.J.; Elmore, M.R.; Zacher, A.H.; Neuenschwander, G.G.; Schmidt, A.J.; Jones, E.O.; Hart, T.R.; Poshusta, J.C.

1994-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Global, Hemispheric, and Zonal Temperature Deviations (CDIAC) - Angell  

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

Global, Hemispheric, and Zonal Temperature Deviations Derived From a 63-Station Radiosonde Network Graph graphic Graphics Data graphic Data Investigator J. K. Angell National Oceanic and Atmospheric Administration, Air Resources Laboratory (R/E/AR), SSMC3, Station 3459, 1315 East West Highway, Silver Spring, Maryland 20910, U.S.A. About Jim Angell: From the Bulletin of the American Meteorological Society (2005) - Jim Angell's Contributions to Meteorology DOI 10.3334/CDIAC/cli.005 Period of Record 1958-2010 (relative to a 1958-1977 average) Special Note Nine tropical radiosonde stations in this 63-station network were identified as anomalous in Angell (2003). Upon removal of these nine stations, the resulting 54-station network, also presented on the CDIAC website, results in significant differences in many of the times series and

342

New Optimal Sensor Suite for Ultrahigh Temperature Fossil Fuel Applications  

DOE Green Energy (OSTI)

Accomplishments during Phase II of a program to develop and demonstrate photonic sensor technology for the instrumentation of advanced powerplants are described. The goal of this project is the research and development of advanced, robust photonic sensors based on improved sapphire optical waveguides, and the identification and demonstration of applications of the new sensors in advanced fossil fuel power plants, where the new technology will contribute to improvements in process control and monitoring. During this program work period, major progress has been experienced in the development of the sensor hardware, and the planning of the system installation and operation. The major focus of the next work period will be the installation of sensors in the Hamilton, Ohio power plant, and demonstration of high-temperature strain gages during mechanical testing of SOFC components.

John Coggin; Jonas Ivasauskas; Russell G. May; Michael B. Miller; Rena Wilson

2006-09-30T23:59:59.000Z

343

Single-Duct Constant Air Volume System Supply Air Temperature Reset: Using Return Air Temperature or Outside Air Temperature?  

E-Print Network (OSTI)

The supply air temperature set point for a singleduct constant air volume air handling unit (AHU) system is often reset based on either return air temperature or outside air temperature in order to reduce simultaneous cooling and heating energy consumption. Both reset strategies make engineering sense as long as the reset schedules are reasonable. Quite often the decision to use one over the other is made with the assumption that they will all achieve some sorts of energy savings. However, the impact of these two strategies on AHU energy consumption could be very different. A comparison of these two commonly used supply air temperature reset strategies for a single-duct constant air volume system is presented in this paper. It is shown that from either the building energy consumption or building comfort point of view, the reset strategy based on outside air temperature is inherently better than that based on return air temperature. Significant amount of heating energy savings can be achieved by switching from return air temperature based reset to outside air temperature based reset. The reset strategy can also benefit variable air volume (VAV) AHUs. An improved supply air temperature set point reset control strategy is proposed by combining and staging the outside air and return air temperature based resets.

Wei, G.; Turner, W. D.; Claridge, D.; Liu, M.

2002-01-01T23:59:59.000Z

344

High-temperature borehole instrumentation  

DOE Green Energy (OSTI)

A new method of extracting natural heat from the earth's crust was invented at the Los Alamos National Laboratory in 1970. It uses fluid pressures (hydraulic fracturing) to produce cracks that connect two boreholes drilled into hot rock formations of low initial permeability. Pressurized water is then circulated through this connected underground loop to extract heat from the rock and bring it to the surface. The creation of the fracture reservior began with drilling boreholes deep within the Precambrian basement rock at the Fenton Hill Test Site. Hydraulic fracturing, flow testing, and well-completion operations required unique wellbore measurements using downhole instrumentation systems that would survive the very high borehole temperatures, 320/sup 0/C (610/sup 0/F). These instruments were not available in the oil and gas industrial complex, so the Los Alamos National Laboratory initiated an intense program upgrading existing technology where applicable, subcontracting materials and equipment development to industrial manufactures, and using the Laboratory resource to develop the necessary downhole instruments to meet programmatic schedules. 60 refs., 11 figs.

Dennis, B.R.; Koczan, S.P.; Stephani, E.L.

1985-10-01T23:59:59.000Z

345

High-temperature borehole instrumentation  

DOE Green Energy (OSTI)

Research in materials, equipment, and instrument development was required in the Hot Dry Rock Energy Extraction Demonstration at Fenton Hill located in northern New Mexico. The new Phase II Energy Extraction System at the Fenton Hill Test Site will consist of two wellbores drilled to a depth of about 4570 m (15,000 ft) and then connected by a series of hydraulic-induced fractures. The first borehole (EE-2) was completed in May of 1980, at a depth of 4633 m (15,200 ft) of which approximately 3960 m (13,000 ft) is in Precambrian granitic rock. Starting at a depth of approximately 2930 m (9600 ft), the borehole was inclined up to 35/sup 0/ from vertical. Bottom-hole temperature in EE-2 is 317/sup 0/C. The EE-3 borehole was then drilled to a depth of 4236 m (13,900 ft). Its inclined part is positioned directly over the EE-2 wellbore with a vertical separation of about 450 m (1500 ft) between them. The materials development programs cover all aspects of geothermal energy extraction. Research on drilling, hydraulic fracturing, and wellbore logging were necessary to determine the technical and economic feasibility of the hot dry rock concepts.

Dennis, B.R.; Koczan, S.; Cruz, J.

1982-01-01T23:59:59.000Z

346

High Temperature Superconducting Underground Cable  

SciTech Connect

The purpose of this Project was to design, build, install and demonstrate the technical feasibility of an underground high temperature superconducting (HTS) power cable installed between two utility substations. In the first phase two HTS cables, 320 m and 30 m in length, were constructed using 1st generation BSCCO wire. The two 34.5 kV, 800 Arms, 48 MVA sections were connected together using a superconducting joint in an underground vault. In the second phase the 30 m BSCCO cable was replaced by one constructed with 2nd generation YBCO wire. 2nd generation wire is needed for commercialization because of inherent cost and performance benefits. Primary objectives of the Project were to build and operate an HTS cable system which demonstrates significant progress towards commercial progress and addresses real world utility concerns such as installation, maintenance, reliability and compatibility with the existing grid. Four key technical areas addressed were the HTS cable and terminations (where the cable connects to the grid), cryogenic refrigeration system, underground cable-to-cable joint (needed for replacement of cable sections) and cost-effective 2nd generation HTS wire. This was the world’s first installation and operation of an HTS cable underground, between two utility substations as well as the first to demonstrate a cable-to-cable joint, remote monitoring system and 2nd generation HTS.

Farrell, Roger, A.

2010-02-28T23:59:59.000Z

347

Advanced low-temperature sorbents  

SciTech Connect

A number of promising technologies are currently being optimized for coal-based power generation, including the Integrated-Gasification Combined Cycle (IGCC) system. If IGCC is to be used successfully for power generation, an economic and efficient way must be found to remove the contaminants, particularly sulfur species, found in coal gas. Except for the hot gas desulfurization system, all major components of IGCC are commercially available or have been shown to meet system requirements. Over the last two decades, the U.S. Department of Energy/Morgantown Energy Technology Center (DOE/METC) has sponsored development of various configurations of high-temperature desulfurization systems including fixed-bed, moving-bed, transport-bed, and fluidized-bed systems. Because of their mode of operation and requirements for sorbent manufacturing, the fixed-bed systems can generally use the same materials as moving-bed configurations, i.e., pelletized or extruded sorbents, while fluidized-bed (circulating or bubbling configurations) and transport reactor configurations use materials generally described as agglomerated or granulated.The objective of this program is to remove hydrogen sulfides from coal gas using sorbent materials.

Ayala, R.E.; Venkataramani, V.S.; Abbasian, J.; Hill, A.H.

1995-12-01T23:59:59.000Z

348

The Circadian Rhythm, A Continuous Transcription-Translation Feedback Loop, Contributes to Low-Dose Radiation-Induced Radioadaptive Response  

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

The Circadian Rhythm, A Continuous Transcription-Translation Feedback Loop, Contributes to Low-Dose Radiation-Induced Radioadaptive Response Aris Alexandrou and Jian Jian Li Department of Radiation Oncology, the University of California Davis, Sacramento, California, 95817 The initiation of the circadian rhythm field occurred when the Takahashi group defined a mutation in the mouse gene "Clock" and cloned the circadian locomotor output cycles kaput (Clock) in the mid- 1990's (1-3). Currently more than a dozen clock genes have been identified (3-4). Disruptions in the circadian rhythm via changes in environmental conditions, such as, diet, temperature, and night/day hours lead to the pathogenesis of a multitude of diseases, such as, cancer, diabetes mellitus,

349

Investigations into High Temperature Components and Packaging  

SciTech Connect

The purpose of this report is to document the work that was performed at the Oak Ridge National Laboratory (ORNL) in support of the development of high temperature power electronics and components with monies remaining from the Semikron High Temperature Inverter Project managed by the National Energy Technology Laboratory (NETL). High temperature electronic components are needed to allow inverters to operate in more extreme operating conditions as required in advanced traction drive applications. The trend to try to eliminate secondary cooling loops and utilize the internal combustion (IC) cooling system, which operates with approximately 105 C water/ethylene glycol coolant at the output of the radiator, is necessary to further reduce vehicle costs and weight. The activity documented in this report includes development and testing of high temperature components, activities in support of high temperature testing, an assessment of several component packaging methods, and how elevated operating temperatures would impact their reliability. This report is organized with testing of new high temperature capacitors in Section 2 and testing of new 150 C junction temperature trench insulated gate bipolar transistor (IGBTs) in Section 3. Section 4 addresses some operational OPAL-GT information, which was necessary for developing module level tests. Section 5 summarizes calibration of equipment needed for the high temperature testing. Section 6 details some additional work that was funded on silicon carbide (SiC) device testing for high temperature use, and Section 7 is the complete text of a report funded from this effort summarizing packaging methods and their reliability issues for use in high temperature power electronics. Components were tested to evaluate the performance characteristics of the component at different operating temperatures. The temperature of the component is determined by the ambient temperature (i.e., temperature surrounding the device) plus the temperature increase inside the device due the internal heat that is generated due to conduction and switching losses. Capacitors and high current switches that are reliable and meet performance specifications over an increased temperature range are necessary to realize electronics needed for hybrid-electric vehicles (HEVs), fuel cell (FC) and plug-in HEVs (PHEVs). In addition to individual component level testing, it is necessary to evaluate and perform long term module level testing to ascertain the effects of high temperature operation on power electronics.

Marlino, L.D.; Seiber, L.E.; Scudiere, M.B.; M.S. Chinthavali, M.S.; McCluskey, F.P.

2007-12-31T23:59:59.000Z

350

Development of Rail Temperature Prediction Model SUMMARY  

E-Print Network (OSTI)

Preventing track buckling is important to the railroad industry’s goal of operational safety. It is a common practice for railroads to impose slow orders during hot weather when the risk of track buckling is high. Numerous factors affect track buckling, but the instantaneous rail temperatures and stress-free (neutral) rail temperatures are the most critical factors. Unfortunately, neither of these two temperatures is easily obtainable. Decisions for slow orders are often based on an arbitrary, ambient temperature limit. The Federal Railroad Administration (FRA) Office of Research and Development has initiated a research project to develop a model for predicting rail temperatures based on real-time meteorological forecast data. The rail temperature prediction model is based on the heat transfer process of a rail exposed to the sun. In developing such a model, a rail-weather station was established, composed of a portable weather station and a short segment of rail track with temperature sensors installed on both rails. The model has proven to be able to predict the maximum rail temperature within a few degrees and within 30 minutes of the actual time when the maximum rail temperature occurs during the day. The model is being validated for three locations where real-time weather data and rail temperature are collected. A prototype webbased

unknown authors

2008-01-01T23:59:59.000Z

351

Variable temperature seat climate control system  

DOE Patents (OSTI)

A temperature climate control system comprises a variable temperature seat, at least one heat pump, at least one heat pump temperature sensor, and a controller. Each heat pump comprises a number of Peltier thermoelectric modules for temperature conditioning the air in a main heat exchanger and a main exchanger fan for passing the conditioned air from the main exchanger to the variable temperature seat. The Peltier modules and each main fan may be manually adjusted via a control switch or a control signal. Additionally, the temperature climate control system may comprise a number of additional temperature sensors to monitor the temperature of the ambient air surrounding the occupant as well as the temperature of the conditioned air directed to the occupant. The controller is configured to automatically regulate the operation of the Peltier modules and/or each main fan according to a temperature climate control logic designed both to maximize occupant comfort during normal operation, and minimize possible equipment damage, occupant discomfort, or occupant injury in the event of a heat pump malfunction.

Karunasiri, Tissa R. (Van Nuys, CA); Gallup, David F. (Pasadena, CA); Noles, David R. (Glendale, CA); Gregory, Christian T. (Alhambra, CA)

1997-05-06T23:59:59.000Z

352

Temperature detection in a gas turbine  

Science Conference Proceedings (OSTI)

A temperature detector includes a first metal and a second metal different from the first metal. The first metal includes a plurality of wires and the second metal includes a wire. The plurality of wires of the first metal are connected to the wire of the second metal in parallel junctions. Another temperature detector includes a plurality of resistance temperature detectors. The plurality of resistance temperature detectors are connected at a plurality of junctions. A method of detecting a temperature change of a component of a turbine includes providing a temperature detector include ing a first metal and a second metal different from the first metal connected to each other at a plurality of junctions in contact with the component; and detecting any voltage change at any junction.

Lacy, Benjamin; Kraemer, Gilbert; Stevenson, Christian

2012-12-18T23:59:59.000Z

353

Piezoelectric accelerometers for ultrahigh temperature application  

Science Conference Proceedings (OSTI)

High temperature sensors are of major importance to aerospace and energy related industries. In this letter, a high temperature monolithic compression-mode piezoelectric accelerometer was fabricated using YCa{sub 4}O(BO{sub 3}){sub 3} (YCOB) single crystals. The performance of the sensor was tested as function of temperature up to 1000 deg. C and over a frequency range of 100-600 Hz. The accelerometer prototype was found to possess sensitivity of 2.4+-0.4 pC/g, across the measured temperature and frequency range, indicating a low temperature coefficient. Furthermore, the sensor exhibited good stability over an extended dwell time at 900 deg. C, demonstrating that YCOB piezoelectric accelerometers are promising candidates for high temperature sensing applications.

Zhang Shujun; Moses, Paul; Shrout, Thomas R. [Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802 (United States); Jiang Xiaoning [TRS Technologies Inc., 2820 East College Ave., State College, Pennsylvania 16801 (United States); Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States); Lapsley, Michael [TRS Technologies Inc., 2820 East College Ave., State College, Pennsylvania 16801 (United States); Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)

2010-01-04T23:59:59.000Z

354

Deep Trek High Temperature Electronics Project  

Science Conference Proceedings (OSTI)

This report summarizes technical progress achieved during the cooperative research agreement between Honeywell and U.S. Department of Energy to develop high-temperature electronics. Objects of this development included Silicon-on-Insulator (SOI) wafer process development for high temperature, supporting design tools and libraries, and high temperature integrated circuit component development including FPGA, EEPROM, high-resolution A-to-D converter, and a precision amplifier.

Bruce Ohme

2007-07-31T23:59:59.000Z

355

Optical temperature indicator using thermochromic semiconductors  

DOE Patents (OSTI)

A reversible optical temperature indicator utilizes thermochromic semiconductors which vary in color in response to various temperature levels. The thermochromic material is enclosed in an enamel which provides protection and prevents breakdown at higher temperatures. Cadmium sulfide is the preferred semiconductor material. The indicator may be utilized as a sign or in a striped arrangement to clearly provide a warning to a user. The various color responses provide multiple levels of alarm.

Kronberg, J.W.

1995-01-01T23:59:59.000Z

356

Research on Very High Temperature Gas Reactors  

Science Conference Proceedings (OSTI)

Very high temperature gas reactors are helium-cooled, graphite-moderated advanced reactors that show potential for generating low-cost electricity via gas turbines or cogeneration with process-heat applications. This investigation addresses the development status of advanced coatings for nuclear-fuel particles and high-temperature structural materials and evaluates whether these developments are likely to lead to economically competitive applications of the very high temperature gas reactor concept.

1991-08-08T23:59:59.000Z

357

Low-temperature magnetization of (Ga,Mn) As semiconductors  

E-Print Network (OSTI)

We report on a comprehensive study of the ferromagnetic moment per Mn atom in (Ga,Mn)As ferromagnetic semiconductors. Theoretical discussion is based on microscopic calculations and on an effective model of Mn local moments antiferromagnetically coupled to valence band hole spins. The validity of the effective model over the range of doping studied is assessed by comparing with microscopic tight-binding/coherent-potential approximation calculations. Using the virtual crystal k center dot p model for hole states, we evaluate the zero-temperature mean-field contributions to the magnetization from the hole kinetic and exchange energies, and magnetization suppression due to quantum fluctuations of Mn moment orientations around their mean-field ground state values. Experimental low-temperature ferromagnetic moments per Mn are obtained by superconducting quantum interference device and x-ray magnetic circular dichroism measurements in a series of (Ga,Mn)As semiconductors with nominal Mn doping ranging from similar to 2 to 8%. Hall measurements in as-grown and annealed samples are used to estimate the number of uncompensated substitutional Mn moments. Based on our comparison between experiment and theory we conclude that all these Mn moments in high quality (Ga,Mn)As materials have nearly parallel ground state alignment.

Jungwirth, T.; Masek, J.; Wang, KY; Edmonds, KW; Sawicki, M.; Polini, M.; Sinova, Jairo; MacDonald, AH; Campion, RP; Zhao, LX; Farley, NRS; Johal, TK; van der Laan, G.; Foxon, CT; Gallagher, BL.

2006-01-01T23:59:59.000Z

358

The seasonal cycle dependence of temperature fluctuations in the atmosphere  

E-Print Network (OSTI)

The correlation statistics of meteorological fields have been of interest in weather forecasting for many years and are also of interest in climate studies. A better understanding of the seasonal variation of correlation statistics can be used to determine how the seasonal cycle of temperature fluctuations should be simulated in noise-forced energy balance models. It is shown that the length scale does have a seasonal dependence and will have to be handled through the seasonal modulation of other coefficients in noise-forced energy balance models. The temperature field variance and spatial correlation fluctuations exhibit seasonality with fluctuation amplitudes larger in the winter hemisphere and over land masses. Another factor contributing to seasonal differences is the larger solar heating gradient in the winter. 40 years of monthly mean surface data and 25 years of monthly mean 700mb and 500mb data is averaged over the seasons. The spatial correlation of four northern hemisphere midlatitude test sites, two ocean sites and two land sites, at the surface, at 700mb and at 500mb is examined for the winter, spring, summer and fall. The correlations between the different vertical levels and the variance of each level is also presented and examined.

Tobin, Bridget Frances

1994-01-01T23:59:59.000Z

359

High Temperature Materials I - Programmaster.org  

Science Conference Proceedings (OSTI)

Feb 28, 2011 ... To increase efficiency and reduce carbon emissions, boilers, heat exchangers, and turbines all will be asked to perform at higher temperature ...

360

Wireless Temperature Sensors for Improved HVAC Control  

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

reliable, and affordable and affordable Wireless Temperature Sensors for Improved HVAC Control An assessment of wireless sensor technology Executive Summary This Technology...

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to obtain the most current and comprehensive results.


361

Improved Martensitic Steel for High Temperature Applications  

NETL has developed a stainless steel composition and heat treatment process for a high-temperature, titanium alloyed 9 Cr-1 molybdenum alloy ...

362

Experiment Hazard Class 3 - High Temperatures  

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

* RF and Microwave * UV Light Hydrogen * Hydrogen Electronics * Electrical Equipment * High Voltage Other * Other Class 3 - High Temperatures Applicability The hazard controls...

363

Carbon Nanotubes Make Simultaneous Temperature, Pressure ...  

ORNL 2010-G00384/jcn UT-B ID 200702020 Carbon Nanotubes Make Simultaneous Temperature, Pressure Sensors Possible Technology Summary Carbon nanotubes ...

364

High-temperature brazed ceramic joints  

DOE Patents (OSTI)

High-temperature joints formed from metallized ceramics are disclosed wherein the metal coatings on the ceramics are vacuum sputtered thereon.

Jarvinen, Philip O. (Amherst, NH)

1986-01-01T23:59:59.000Z

365

ARM - Measurement - Microwave narrowband brightness temperature  

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

A descriptive measure of radiation in terms of the temperature of a hypothetical black body emitting an identical amount of radiation in the same narrow bands of wavelengths....

366

ARM - Measurement - Longwave spectral brightness temperature  

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

A descriptive measure of radiation in terms of the temperature of a hypothetical black body emitting an identical amount of radiation at the same spectrally resolved wavelengths....

367

Low Temperature Joining of Ceramic Composites - Energy ...  

Patent 5,858,144: Low temperature joining of ceramic composites A method of joining similar or dissimilar ceramic and ceramic composite materials, ...

368

Integrated Ingredients Dehydrated Agricultural Drying Low Temperature...  

Open Energy Info (EERE)

Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon Integrated Ingredients Dehydrated Agricultural Drying Low Temperature Geothermal Facility Jump...

369

Ultrahigh-Temperature Distributed Wireless Sensors  

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

Ultrahigh-Temperature Distributed Wireless Sensors Description The U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) is working in cooperation with Prime...

370

High Temperature Interfacial Superconductivity - Energy Innovation ...  

Cuprate superconductors exhibit relatively high transition temperatures, but their unit cells are complex and large. Localizing a superconducting layer to a small ...

371

Group 3: Humidity, Temperature, and Voltage (Presentation)  

DOE Green Energy (OSTI)

Group 3 is chartered to develop accelerated stress tests that can be used as comparative predictors of module lifetime versus stresses associated with humidity, temperature and voltage.

Wohlgemuth, J.

2013-05-01T23:59:59.000Z

372

Low Temperature Scalable Production of Oriented Nanowires  

... Yang P., "Low-Temperature Production of ZnO Nanowire Arrays,” Angewandte Chemie International Edition 2003, 42, 3031-34. Law, M., Greene, L.E ...

373

Development of Inorganic High Temperature Proton Exchange ...  

Science Conference Proceedings (OSTI)

For fuel cell systems directly coupled to a reformer, the primary advantage of high temperatures is the elimination of CO poisoning. Direct methanol fuel cells ...

374

Geothermal Food Processors Agricultural Drying Low Temperature...  

Open Energy Info (EERE)

Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon Geothermal Food Processors Agricultural Drying Low Temperature Geothermal Facility Jump to:...

375

Ultrahigh Temperature Ceramics and Composites (UHTCs)  

Science Conference Proceedings (OSTI)

Oct 28, 2009 ... Reactive Melt Infiltration of Ultrahigh Temperature Refractory Carbide ... To improve the thermal shock resistance of UHTC, carbon fiber was ...

377

New Ultra-High Temperature Material Systems  

Science Conference Proceedings (OSTI)

Oct 9, 2012 ... Hafnium Based Coatings for Non-Oxide Ultrahigh Temperature ... the fracture properties and resistance to thermal shock were evaluated before ...

378

Applications of High-temperature Structural Materials  

Science Conference Proceedings (OSTI)

Aug 9, 2013 ... The development of advanced ultra-supercritical coal-fired power plants with operating temperature beyond 700°C requires the partial ...

379

Low temperature proton conducting oxide devices  

DOE Patents (OSTI)

A device for conducting protons at a temperature below 550.degree. C. includes a LAMOX ceramic body characterized by an alpha crystalline structure.

Armstrong, Timothy R. (Clinton, TN); Payzant, Edward A. (Oak Ridge, TN); Speakman, Scott A. (Oak Ridge, TN); Greenblatt, Martha (Highland Park, NJ)

2008-08-19T23:59:59.000Z

380

Controlled Temperature Shape Rolling of Alloy 718  

Science Conference Proceedings (OSTI)

Incentive. Program (IMIP) to develop a bar mill for high temperature alloys .... and energy can be saved and that tool life ... enough to achieve steady-state.

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Recent Developments in High Temperature Superconductivity  

Science Conference Proceedings (OSTI)

Scope, Recently, significant progress has been made world-wide in both fabrication and fundamental understanding of high-temperature superconductors (HTS) ...

382

Thermodynamic and Kinetic Properties of High Temperature ...  

Science Conference Proceedings (OSTI)

Perspectives on Phonons and Electron-Phonon Scattering in High-Temperature Superconductors · Prediction and Design of Materials from Crystal Structures to ...

383

Fusion blanket high-temperature heat transfer  

DOE Green Energy (OSTI)

Deep penetration of 14 MeV neutrons makes two-temperature region blankets feasible. A relatively low-temperature (approx. 300/sup 0/C) metallic structure is the vacuum/coolant pressure boundary, while the interior of the blanket, which is a simple packed bed of nonstructural material, operates at very high temperatures (>1000/sup 0/C). The water-cooled shell structure is thermally insulated from the steam-cooled interior. High-temperature steam can dramatically increase the efficiency of electric power generation, as well as produce hydrogen and oxygen-based synthetic fuels at high-efficiency.

Fillo, J.A.

1983-01-01T23:59:59.000Z

384

Temperature-insensitive vertical-cavity surface-emitting lasers and method for fabrication thereof  

DOE Patents (OSTI)

A temperature-insensitive vertical-cavity surface-emitting laser (VCSEL) and method for fabrication thereof. The temperature-insensitive VCSEL comprises a quantum-well active region within a resonant cavity, the active region having a gain spectrum with a high-order subband (n.gtoreq.2) contribution thereto for broadening and flattening the gain spectrum, thereby substantially reducing any variation in operating characteristics of the VCSEL over a temperature range of interest. The method for forming the temperature-insensitive VCSEL comprises the steps of providing a substrate and forming a plurality of layers thereon for providing first and second distributed Bragg reflector (DBR) mirror stacks with an active region sandwiched therebetween, the active region including at least one quantum-well layer providing a gain spectrum having a high-order subband (n.gtoreq.2) gain contribution, and the DBR mirror stacks having predetermined layer compositions and thicknesses for providing a cavity resonance within a predetermined wavelength range substantially overlapping the gain spectrum.

Chow, Weng W. (Sandia Park, NM); Choquette, Kent D. (Albuquerque, NM); Gourley, Paul L. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

385

Tunable Diode Laser Sensors to Monitor Temperature and Gas Composition...  

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

Diode Laser Sensors to Monitor Temperature and Gas Composition for High Temperature Coal Gasification Systems Description Sensing and measuring temperature and gas compositions in...

386

Temperature-Dependent Electron Transport in Quantum Dot Photovoltaics  

E-Print Network (OSTI)

6, the ITO back contact, the RTD temperature sensor, and theresistive temperature detector (RTD) is a calibrated piecethe sample temperature. The RTD is necessary as the ITC 503

Padilla, Derek

2013-01-01T23:59:59.000Z

387

Factors contributing to academic performance of students in a private university in Kenya.  

E-Print Network (OSTI)

??This study aimed at identifying the models that best explain the student-related factors that contribute to the academic performance of students in the university. Students'… (more)

Karimi, Florah K.

2008-01-01T23:59:59.000Z

388

"Nuclear Power - Contributing to U.S. Energy Needs in the 21st...  

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

"Nuclear Power - Contributing to U.S. Energy Needs in the 21st Century?" Director's Welcome Organization Achievements Highlights Fact Sheets, Brochures & Other Documents...

389

A QTL analysis of female variation contributing to refractoriness and sperm competition in Drosophila melanogaster.  

E-Print Network (OSTI)

single-marker analysis. CIM results indicate a contributionSecond chromosome Fig. 5. CIM linkage groups that containThird chromosome Fig. 4. CIM linkage groups containing

Lawniczak, Mara K N; Begun, David J

2005-01-01T23:59:59.000Z

390

Availability, usage and expected contribution of potential nursery habitats for the California halibut  

E-Print Network (OSTI)

of a damsel?sh re?ect availability of suitable habitat.locate/ecss Availability, usage and expected contribution ofthe spatial coverage (availability) of all potential nursery

Fodrie, Fredrick Joel; Mendoza, Guillermo F.

2006-01-01T23:59:59.000Z

391

U.S. crude oil production growth contributes to global oil ...  

U.S. Energy Information Administration (EIA)

Rising crude oil production in the United States contributed to relatively stable global crude oil prices in 2013, at around the same annual average ...

392

Strange Quark Contribution to the Proton Spin, from Elastic $\\vec{e}p$ and $?p$ Scattering  

E-Print Network (OSTI)

The strangeness contribution to the vector and axial form factors of the proton is presented for momentum transfers in the range 0.45 Lab, and elastic $\

Stephen Pate

2006-11-28T23:59:59.000Z

393

Strangeness contribution to the vector and axial form factors of the nucleon  

E-Print Network (OSTI)

The strangeness contribution to the vector and axial form factors of the nucleon is presented for momentum transfers in the range $0.45Lab, and elastic $\

S. F. Pate; G. A. MacLachlan; D. W. McKee; V. Papavassiliou

2005-12-14T23:59:59.000Z

394

Short Circuit Current Contribution for Different Wind Turbine Generator Types: Preprint  

DOE Green Energy (OSTI)

This paper presents simulation results for short-circuit current contribution for different types of WTGs obtained through transient analysis using generic WTG models.

Muljadi, E.; Gevorgian, V.; Samaan, N.; Li, J.; Pasupulati, S.

2010-03-01T23:59:59.000Z

395

DOE, USGS, CoreWall Data Contributions to NGDS Data Development...  

Open Energy Info (EERE)

Description Significant growth in the geothermal industry contribution to the national energy portfolio requires reducing the risks and cost of defining resources, characterizing...

396

Hadronic Light-by-Light Contribution to Muon g-2: Status and Prospects  

E-Print Network (OSTI)

I review the recent calculations and present status of the hadronic light-by-light contribution to the muon g-2.

Joaquim Prades

2008-06-13T23:59:59.000Z

397

Prof. K. K. Chawla's Seminal Contributions to the Field of Metal ...  

Science Conference Proceedings (OSTI)

K. K. Chawla's Seminal Contributions to the Field of Metal Matrix Composites · Structural Health Monitoring of Wind Turbine Blades · Studies of Nanocrystalline  ...

398

Wind Power Plant Short Circuit Current Contribution for Different Fault and Wind Turbine Topologies: Preprint  

SciTech Connect

This paper presents simulation results for SC current contribution for different types of WTGs obtained through transient and steady-state computer simulation software.

Gevorgian, V.; Muljadi, E.

2010-10-01T23:59:59.000Z

399

Enhanced High Temperature Performance of NOx Reduction Catalyst Materials  

Science Conference Proceedings (OSTI)

Two primary NOx after-treatment technologies have been recognized as the most promising approaches for meeting stringent NOx emission standards for diesel vehicles within the Environmental Protection Agency’s (EPA’s) 2007/2010 mandated limits, NOx Storage Reduction (NSR) and NH3 selective catalytic reduction (SCR); both are, in fact being commercialized for this application. However, in looking forward to 2015 and beyond with expected more stringent regulations, the continued viability of the NSR technology for controlling NOx emissions from lean-burn engines such as diesels will require at least two specific, significant and inter-related improvements. First, it is important to reduce system costs by, for example, minimizing the precious metal content while maintaining, even improving, performance and long-term stability. A second critical need for future NSR systems, as well as for NH3 SCR, will be significantly improved higher and lower temperature performance and stability. Furthermore, these critically needed improvements will contribute significantly to minimizing the impacts to fuel economy of incorporating these after-treatment technologies on lean-burn vehicles. To meet these objectives will require, at a minimum an improved scientific understanding of the following things: i) the various roles for the precious and coinage metals used in these catalysts; ii) the mechanisms for these various roles; iii) the effects of high temperatures on the active metal performance in their various roles; iv) mechanisms for higher temperature NOx storage performance for modified and/or alternative storage materials; v) the interactions between the precious metals and the storage materials in both optimum NOx storage performance and long term stability; vi) the sulfur adsorption and regeneration mechanisms for NOx reduction materials; vii) materials degradation mechanisms in CHA-based NH3 SCR catalysts. The objective of this CRADA project between PNNL and Cummins, Inc. is to develop a fundamental understanding of the above-listed issues. Model catalysts that are based on literature formulations are the focus of the work being carried out at PNNL. In addition, the performance and stability of more realistic high temperature NSR catalysts, supplied by JM, are being studied in order to provide baseline data for the model catalysts that are, again, based on formulations described in the open literature. For this short summary, we will primarily highlight representative results from our recent studies of the stability of candidate high temperature NSR materials.

Gao, Feng; Kim, Do Heui; Luo, Jinyong; Muntean, George G.; Peden, Charles HF; Howden, Ken; Currier, Neal; Kamasamudram, Krishna; Kumar, Ashok; Li, Junhui; Stafford, Randy; Yezerets, Aleksey; Castagnola, Mario; Chen, Hai Ying; Hess, Howard ..

2012-12-31T23:59:59.000Z

400

Spectral, temporal and temperature features of the nonlinear response of high-temperature superconductors in transient nonlinear spectroscopy  

SciTech Connect

It is shown that basic properties of the nonlinear response of high-temperature superconductors (HTSCs) observed in femtosecond and picosecond pump-probe experiments at high and low pump levels in various variants of the pump-probe spectroscopy, including one- and two-photon excited-state probing, can be interpreted by using two assumptions. The spectral and temperature properties of the HTSC response at low pump levels can be explained taking into account the contributions from interband electronic transitions to the dielectric constant. At the same time, drastic variations in the HTSC response kinetics (temporal features) observed at high pump levels (for a typical pump pulse energy of {approx}10{sup -7} J in a focal spot of diameter 150 {mu}m) can be explained by assuming the existence of a 'frozen' (metastable) energy gap in the electronic spectrum of a HTSC. In this case, all the conditions required for the interpretation of a drastic decrease in the relaxation rate of a nonlinear response (degeneracy) are realised due to the specific distribution of the electronic state density immediately after the formation of the energy gap in the electronic spectrum of the HTSC. (review)

Bobyrev, Yu V; Petnikova, V M; Rudenko, K V; Shuvalov, Vladimir V [International Laser Center, M. V. Lomonosov Moscow State University, Moscow (Russian Federation)

2006-10-31T23:59:59.000Z

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


401

Temperature Measurements in the Magnetic Measurement Facility  

SciTech Connect

Several key LCLS undulator parameter values depend strongly on temperature primarily because of the permanent magnet material the undulators are constructed with. The undulators will be tuned to have specific parameter values in the Magnetic Measurement Facility (MMF). Consequently, it is necessary for the temperature of the MMF to remain fairly constant. Requirements on undulator temperature have been established. When in use, the undulator temperature will be in the range 20.0 {+-} 0.2 C. In the MMF, the undulator tuning will be done at 20.0 {+-} 0.1 C. For special studies, the MMF temperature set point can be changed to a value between 18 C and 23 C with stability of {+-}0.1 C. In order to ensure that the MMF temperature requirements are met, the MMF must have a system to measure temperatures. The accuracy of the MMF temperature measurement system must be better than the {+-}0.1 C undulator tuning temperature tolerance, and is taken to be {+-}0.01 C. The temperature measurement system for the MMF is under construction. It is similar to a prototype system we built two years ago in the Sector 10 alignment lab at SLAC. At that time, our goal was to measure the lab temperature to {+-}0.1 C. The system has worked well for two years and has maintained its accuracy. For the MMF system, we propose better sensors and a more extensive calibration program to achieve the factor of 10 increase in accuracy. In this note we describe the measurement system under construction. We motivate our choice of system components and give an overview of the system. Most of the software for the system has been written and will be discussed. We discuss error sources in temperature measurements and show how these errors have been dealt with. The calibration system is described in detail. All the LCLS undulators must be tuned in the Magnetic Measurement Facility at the same temperature to within {+-}0.1 C. In order to ensure this, we are building a system to measure the temperature of the undulators to {+-}0.01 C. This note describes the temperature measurement system under construction.

Wolf, Zachary

2010-12-13T23:59:59.000Z

402

Temperature and temporal dependence of the optical response for a radiochromic dosimeter  

SciTech Connect

Purpose: Both temporal and thermal dependencies of the dose response have been observed in radiochromic dosimeters. As these dependencies may be influenced by the dose level, the present study investigates the temperature dependence during irradiation and the temporal change of the optical response following irradiation of radiochromic dosimeters at a range of doses. Methods: Cuvette samples of the PRESAGE Trade-Mark-Sign radiochromic dosimeter were irradiated within a dose range of 0-10 Gy at irradiation temperatures within 5-35 Degree-Sign C and postirradiation storage within 6-30 Degree-Sign C. The optical response due to irradiation was measured using a standard spectrophotometer and the data were analyzed in terms of thermal and temporal change. Results: The initial dose response was linear over the applied dose range independent of irradiation temperature. However, the optical response to a specific dose increased exponentially with irradiation temperature corresponding to an activation energy of 0.114 {+-} 0.007 eV. The temporal change in dose response after irradiation consisted of an offset, an auto-oxidation rate with activation energy 0.84 {+-} 0.03 eV, and an initial exponential increase in optical response (1.6 {+-} 0.2 eV) followed by an exponential decrease in optical response (0.98 {+-} 0.08 eV). These contributions depended on both storage temperature and the dose given, leading to a nonlinear dose response with time at low storage temperatures and a high auto-oxidation rate at high storage temperatures. Conclusions: Thermal equilibration is important to the radiochromic dosimeter investigated due to an exponential change in dose response with irradiation temperature and a considerable postirradiation temporal change in response. For the dosimeter version investigated in this study, a compromise in storage temperature has to be made between increasing the nonlinearity of the dose response with time and inducing a high auto-oxidation rate.

Skyt, Peter S.; Wahlstedt, Isak; Muren, Ludvig P.; Petersen, Jorgen B. B.; Balling, Peter [Department of Medical Physics, Aarhus University/Aarhus University Hospital, DK-8000 Aarhus C (Denmark) and Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Department of Medical Physics, Aarhus University/Aarhus University Hospital, DK-8000 Aarhus C (Denmark); Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)

2012-12-15T23:59:59.000Z

403

Induction of enhanced methane oxidation in compost: Temperature and moisture response  

Science Conference Proceedings (OSTI)

Landfilling is one of the most common ways of municipal solid waste disposal. Degradation of organic waste produces CH{sub 4} and other landfill gases that significantly contribute to global warming. However, before entering the atmosphere, part of the produced CH{sub 4} can be oxidised while passing through the landfill cover. In the present study, the oxidation rate of CH{sub 4} was studied with various types of compost as possible landfill cover. The influence of incubation time, moisture content and temperature on the CH{sub 4} oxidation capacity of different types of compost was examined. It was observed that the influence of moisture content and temperature on methane oxidation is time-dependent. Maximum oxidation rates were observed at moisture contents ranging from 45% to 110% (dry weight basis), while the optimum temperature ranged from 15 to 30 deg. C.

Mor, Suman [Centre for Energy Studies, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016 (India) and Department of Applied Analytical and Physical Chemistry, Ghent University, Coupure Links 653, B-9000 Ghent (Belgium)]. E-mail: sumanmor@yahoo.com; Visscher, Alex de [Department of Applied Analytical and Physical Chemistry, Ghent University, Coupure Links 653, B-9000 Ghent (Belgium); Ravindra, Khaiwal [Micro and Trace Analysis Centre, Department of Chemistry, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp (Belgium); Dahiya, R.P. [Centre for Energy Studies, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016 (India); Chandra, A. [Centre for Energy Studies, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016 (India); Cleemput, Oswald van [Department of Applied Analytical and Physical Chemistry, Ghent University, Coupure Links 653, B-9000 Ghent (Belgium)

2006-07-01T23:59:59.000Z

404

Modification of the aging dynamics of glassy polymers due to a temperature step  

E-Print Network (OSTI)

Molecular dynamics simulations are used to investigate the connection between thermal history and physical aging in polymer glasses, in particular the effects of a temperature square step. Measurements of two-time correlation functions show that a negative temperature step causes "rejuvenation" of the sample: the entire spectrum of relaxation times appears identical to a younger specimen that did not experience a temperature step. A positive temperature step, however, leads to significant changes in the relaxation times. At short times, the dynamics are accelerated (rejuvenation), whereas at long times the dynamics are slowed (over-aging). All findings are in excellent qualitative agreement with recent experiments. The two regimes can be explained by the competing contributions of dynamical heterogeneities and faster aging dynamics at higher temperatures. As a result of this competition, the transition between rejuvenation and over-aging depends on the length of the square step, with shorter steps causing more rejuvenation and longer steps causing more over-aging. Although the spectrum of relaxation times is greatly modified by a temperature step, the van Hove functions, which measure the distribution of particle displacements, exhibit complete superposition at times when the mean-squared displacements are equal.

Mya Warren; Joerg Rottler

2008-08-13T23:59:59.000Z

405

THE NEW WIND CHILL EQUIVALENT TEMPERATURE CHART  

Science Conference Proceedings (OSTI)

The formula used in the U.S. and Canada to express the combined effect of wind and low temperature on how cold it feels was changed in November 2001. Many had felt that the old formula for equivalent temperature, derived in the 1960s from Siple ...

Randall Osczevski; Maurice Bluestein

2005-10-01T23:59:59.000Z

406

THE MULTI-USE STEINEL VARIABLE TEMPERATURE  

E-Print Network (OSTI)

THE MULTI-USE STEINEL VARIABLE TEMPERATURE ELECTRONICALLY CONTROLLED HEAT GUNTEMPERATURE RANGE 212 COMBUSTIBLE LIQUIDS. DO NOT USE FOR: · Heating gas engines · Heating car batteries · Thawing refrigerator equipment Specifications Temperature Variable from 212° F to 1100° F Watts 1500W Weight 1.5 lbs. Supply

Kleinfeld, David

407

THE MULTI-USE STEINEL VARIABLE TEMPERATURE  

E-Print Network (OSTI)

THE MULTI-USE STEINEL VARIABLE TEMPERATURE ELECTRONICALLY CONTROLLED HEAT GUNTEMPERATURE RANGE 212 COMBUSTIBLE LIQUIDS. DO NOT USE FOR: · Heating gas engines · Heating car batteries · Thawing refrigerator equipment Specifications Temperature Variable from 212" F to 1100° F Watts 1500W Weight 1.5 lbs. Supply

Kleinfeld, David

408

Temperature Microstructure in the Equatorial Atlantic  

Science Conference Proceedings (OSTI)

Vertical profiles of temperature microstructure were collected at seven sites in the equatorial Atlantic between 24°W and 33°W, 2°N and 1°20?S. The use of three identical temperature microstructure profiles gives insight into the spatial and ...

T. R. Osborn; L. E. Bilodeau

1980-01-01T23:59:59.000Z

409

High-temperature electronics: an overview  

DOE Green Energy (OSTI)

A summary is presented providing an overview of contemporary high-temperature electronics and identifying the major areas where developments are needed and the laboratories where research is being conducted. The geothermal program, high-temperature oil and gas well logging, jet engine monitors, and circuits for operation in the sodium coolant loop of the Clinch River Breeder reactor have stimulated research. (FS)

Heckman, R.C.

1979-01-01T23:59:59.000Z

410

High temperature spectral gamma well logging  

Science Conference Proceedings (OSTI)

A high temperature spectral gamma tool has been designed and built for use in small-diameter geothermal exploration wells. Several engineering judgments are discussed regarding operating parameters, well model selection, and signal processing. An actual well log at elevated temperatures is given with spectral gamma reading showing repeatability.

Normann, R.A.; Henfling, J.A.

1997-01-01T23:59:59.000Z

411

Modeling global temperature changes with genetic programming  

Science Conference Proceedings (OSTI)

We use genetic programming (GP), a variant of evolutionary computation, to build interpretable models of global mean temperature as a function of natural and anthropogenic forcings. In contrast to the conventional approach, which engages models that ... Keywords: Data-driven modeling, Evolutionary computation, Genetic programming, Global temperature modeling, Unconstrained optimization

Karolina Stanislawska; Krzysztof Krawiec; Zbigniew W. Kundzewicz

2012-12-01T23:59:59.000Z

412

Design optimizations for microprocessors at low temperature  

Science Conference Proceedings (OSTI)

We investigate trade-offs in microprocessor frequency and system power achievable for low temperature operation in scaled high leakage technologies by combining refrigeration with supply voltage selection, body bias, transistor sizing and shorter channel ... Keywords: CMOS, cooling, electrothermal modeling, frequency, low temperature, microprocessor, power, refrigeration

Arman Vassighi; Ali Keshavarzi; Siva Narendra; Gerhard Schrom; Yibin Ye; Seri Lee; Greg Chrysler; Manoj Sachdev; Vivek De

2004-06-01T23:59:59.000Z

413

Temperature Trends at San Juan, Puerto Rico  

Science Conference Proceedings (OSTI)

Observations at the San Juan, Puerto Rico international airport show that the annual mean temperature has increased by about 2.1°C (3.8°F) from 1956 to 1983. The chief contributors to the increase are an increase in daily minimum temperature from ...

Claude E. Duchon

1986-11-01T23:59:59.000Z

414

Seasonal Variation in Daily Temperature Ranges  

Science Conference Proceedings (OSTI)

Abrupt spring and autumnal changes in the daily temperature range, from low winter values to higher nonwinter values, were noted in the Minneapolis-St. Paul temperature record. Since this feature was even more evident in five rural and small town ...

David L. Ruschy; Donald G. Baker; Richard H. Skaggs

1991-12-01T23:59:59.000Z

415

High temperature ceramic/metal joint structure  

DOE Patents (OSTI)

A high temperature turbine engine includes a hybrid ceramic/metallic rotor member having ceramic/metal joint structure. The disclosed joint is able to endure higher temperatures than previously possible, and aids in controlling heat transfer in the rotor member.

Boyd, Gary L. (Tempe, AZ)

1991-01-01T23:59:59.000Z

416

Live Work with High Temperature Conductors  

Science Conference Proceedings (OSTI)

This report examines issues that may arise when live work is undertaken on conductors that operate at high temperatures (HT conductors) and provides the results from selected tests on the temperature levels reached by tools in contact with hot conductors. It also discusses possible concerns that may arise during de-energized work on lines that use HT conductors.

2009-12-15T23:59:59.000Z

417

High Temperature Electrochemistry Center - HiTEC  

DOE Green Energy (OSTI)

This presentation discusses the High Temperature Electrochemistry Center (HiTEC). The mission of HiTEC is to advance the solid oxide technology, such as solid oxide, high temperature electrolysers, reversible fuel cells, energy storage devices, proton conductors, etc., for use in DG and FutureGen applications, and to conduct fundamental research that aids the general development of all solid oxide technology.

McVay, G.; Williams, M.

2005-01-27T23:59:59.000Z

418

A New Minimum Temperature Record for Oklahoma  

Science Conference Proceedings (OSTI)

A minimum temperature of ?31°F (?35°C) was recorded at Nowata, Oklahoma, on 10 February 2011. This exceeded the previous record minimum temperature for Oklahoma of ?27°F (?32.8°C). The Nowata station is in the Oklahoma Mesonet network. High pressure was ...

Gary McManus; Thomas W. Schmidlin; Christopher A. Fiebrich

2013-04-01T23:59:59.000Z

419

average air temperature | OpenEI  

Open Energy Info (EERE)

average air temperature average air temperature Dataset Summary Description (Abstract): Air Temperature at 10 m Above The Surface Of The Earth (deg C)NASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Nov 2007)22-year Monthly & Annual Average (July 1983 - June 2005)Parameter: Air Temperature at 10 m Above The Surface Of The Earth (deg C)Internet: http://eosweb.larc.nasa.gov/sse/Note 1: SSE Methodology & Accuracy sections onlineNote 2: Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; Source U.S. National Aeronautics and Space Administration (NASA), Surface meteorology and Solar Energy (SSE) Date Released March 31st, 2009 (5 years ago) Date Updated April 01st, 2009 (5 years ago) Keywords average air temperature

420

Sanyal Temperature Classification | Open Energy Information  

Open Energy Info (EERE)

Sanyal Temperature Classification Sanyal Temperature Classification Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification The information for this page was taken directly from Subir Sanyal's paper, Classification of Geothermal Systems: A Possible Scheme (Stanford, February 2, 2005) At the request of the United States Department of Energy, the author was asked by the Geothermal Energy Association (Washington, D.C.) to prepare a white paper on the subject (in connection with a new national assessment of geothermal resources). This paper offers a possible scheme in which geothermal resources are classified into seven categories based on temperature. This scheme is based not only on temperature but also according to a set of additional attributes important for practical utilization of geothermal

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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Thermoelectric refrigerator having improved temperature stabilization means  

DOE Patents (OSTI)

A control system for thermoelectric refrigerators is disclosed. The thermoelectric refrigerator includes at least one thermoelectric element that undergoes a first order change at a predetermined critical temperature. The element functions as a thermoelectric refrigerator element above the critical temperature, but discontinuously ceases to function as a thermoelectric refrigerator element below the critical temperature. One example of such an arrangement includes thermoelectric refrigerator elements which are superconductors. The transition temperature of one of the superconductor elements is selected as the temperature control point of the refrigerator. When the refrigerator attempts to cool below the point, the metals become superconductors losing their ability to perform as a thermoelectric refrigerator. An extremely accurate, first-order control is realized.

Falco, Charles M. (Woodridge, IL)

1982-01-01T23:59:59.000Z

422

Plasma-Catalysis During Temperature Transient Testing  

DOE Green Energy (OSTI)

A combination of catalysts is used together with nonthermal plasma in simulated diesel exhaust, while the gas temperature is varied. The catalysts both store and convert pollutants. As a result, pollutant concentrations during temperature ramps are different than those at steady state conditions. The data are presented for plasma followed by BaY, alumina, and Pt catalysts in simulated exhaust. When temperature ramps from high to low, apparent NOx conversion is quite high. However, when temperature is ramped from low to high, lower apparent conversions are seen. In a typical test cycle, average NOx conversion between 100 and 400 C is 60%. Peak conversion during the down ramp is over 90%, and minimum conversion during the up ramp is 30%. The composition of the effluent gas also varies during the temperature cycle. Intermediates such as methyl nitrate and hydrogen cyanide are not present following the combination of catalysts.

Hoard, John

2001-08-05T23:59:59.000Z

423

Program predicts reservoir temperature and geothermal gradient  

Science Conference Proceedings (OSTI)

This paper reports that a Fortran computer program has been developed to determine static formation temperatures (SFT) and geothermal gradient (GG). A minimum of input data (only two shut-in temperature logs) is required to obtain the values of SFT and GG. Modeling of primary oil production and designing enhanced oil recovery (EOR) projects requires knowing the undisturbed (static) reservoir temperature. Furthermore, the bottom hole circulating temperature (BHCT) is an important factor affecting a cement's thickening time, rheological properties, compressive strength, development, and set time. To estimate the values of BHCT, the geothermal gradient should be determined with accuracy. Recently we obtained an approximate analytical solution which describes the shut-in temperature behavior.

Kutasov, I.M.

1992-06-01T23:59:59.000Z

424

Development of 2-Meter Soil Temperature Probes and Results of Temperature  

Open Energy Info (EERE)

Development of 2-Meter Soil Temperature Probes and Results of Temperature Development of 2-Meter Soil Temperature Probes and Results of Temperature Survey Conducted at Desert Peak, Nevada, USA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Development of 2-Meter Soil Temperature Probes and Results of Temperature Survey Conducted at Desert Peak, Nevada, USA Abstract Temperature gradient drilling has historically been a key tool in the exploration for geothermal resources in the Great Basin, USA but regulatory, environmental, and accessibility issues, as well as the expense of drilling, are increasingly limiting its use. In cases where thermal groundwater is not overlain by near-surface cold aquifers, temperatures measured at a depth of 2-meters is an efficient method for mapping thermal anomalies at a high level of detail. This is useful for augmenting deeper

425

A Harmonic Approach for Calculating Daily Temperature Normals Constrained by Homogenized Monthly Temperature Normals  

Science Conference Proceedings (OSTI)

NOAA released the new 1981–2010 climate normals in July 2011. These included monthly and daily normals of minimum and maximum temperature. Monthly normals were computed from monthly temperature values that were corrected for biases (i.e., ...

Anthony Arguez; Scott Applequist

2013-07-01T23:59:59.000Z

426

Quantifying the Nonconservative Production of Conservative Temperature, Potential Temperature, and Entropy  

Science Conference Proceedings (OSTI)

The evolution equation of potential temperature has to date been treated as an approximation to the oceanic version of the first law of thermodynamics. That is, oceanographers have regarded the advection and diffusion of potential temperature as ...

Felicity S. Graham; Trevor J. McDougall

2013-05-01T23:59:59.000Z

427

The Impact of Increasing Summer Mean Temperatures on Extreme Maximum and Minimum Temperatures in Phoenix, Arizona  

Science Conference Proceedings (OSTI)

Over the past few decades, heat-island related temperature increases in Phoenix, Arizona have been similar to the temperature increases predicted in a number of greenhouse simulation experiments. In this investigation, we use the Phoenix climate ...

Robert C. Balling Jr.; Jon A. Skindlov; Daniel H. Phillips

1990-12-01T23:59:59.000Z

428

The Food and Fiber System and Production Agriculture's Contributions to the Texas Economy  

E-Print Network (OSTI)

In 2001, Texas agriculture generated $14 billion in cash receipts. The production, processing, distribution and consumption of food and fiber products contributes substantially to the economy of Texas. This publication reports the contributions of the food and fiber system and individual commodities.

Nelson, Gene

2004-12-01T23:59:59.000Z

429

Understanding social loafing in knowledge contribution from the perspectives of justice and trust  

Science Conference Proceedings (OSTI)

Many studies have confirmed that social loafing can greatly undermine a group's performance. The negative impact of social loafing is even more pronounced in knowledge contribution, since much valuable knowledge is implicit and thus easy to conceal. ... Keywords: Justice, Knowledge contribution, Social Exchange Theory, Social loafing, Trust

Tung-Ching Lin; Chien-Chih Huang

2009-04-01T23:59:59.000Z

430

William Marsh Rice University Defined Contribution Retirement Plan ADMINISTRATOR SELECTION FORM  

E-Print Network (OSTI)

(s) in the following percentages: ¹ The following are examples of allowable contribution allocations: Example 1: TIAA-CREF 100% & Fidelity 0% Example 2: TIAA-CREF 50% & Fidelity 50% Example 3: TIAA-CREF 25% & Fidelity 75% Example 4: TIAA-CREF 0% & Fidelity 100% The specific investment funds in which the employer contributions

431

William Marsh Rice University Defined Contribution Retirement Plan ADMINISTRATOR SELECTION FORM  

E-Print Network (OSTI)

(s) in the following percentages: The following are examples of allowable contribution allocations: Example 1: TIAA-CREF 100% & Fidelity 0% Example 2: TIAA-CREF 50% & Fidelity 50% Example 3: TIAA-CREF 25% & Fidelity 75% Example 4: TIAA-CREF 0% & Fidelity 100% The specific investment funds in which the employer contributions

432

Overview of US contributions to IEA hydrogen technology Task IV electrolytic hydrogen production  

SciTech Connect

US contributions derive largely from the US Department of Energy Chemical/Hydrogen Energy Storage Systems Program. The programmatic rationale, goals and focus, which reflect current US R and D policy and perceptions, are discussed as they influence the substance and pace of the R and D program in Hydrogen Technology. Contributions and future prospects are discussed briefly.

Mezzina, A.

1985-06-01T23:59:59.000Z

433

Ballpark prediction for the hadronic light-by-light contribution to the muon (g-2)_?  

E-Print Network (OSTI)

Using the momentum dependence of the dressed quark mass and the well-known formulae for the mass dependent quark loop contribution to the light-by-light scattering insertions, we compute the hadronic light-by-light contribution to the the muon anomalous magnetic moment. We ascribe for the first time a systematic error on the calculation.

Pere Masjuan; Marc Vanderhaeghen

2012-12-03T23:59:59.000Z

434

Intrinsic vs. Image-Related Utility in Social Media: Why Do People Contribute Content to Twitter?  

Science Conference Proceedings (OSTI)

We empirically study the motivations of users to contribute content to social media in the context of the popular microblogging site Twitter. We focus on noncommercial users who do not benefit financially from their contributions. Previous literature ... Keywords: dynamic discrete choice models, field experiments, social media

Olivier Toubia, Andrew T. Stephen

2013-05-01T23:59:59.000Z

435

Category:Sanyal Temperature Classification | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Sanyal Temperature Classification Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Category:Sanyal Temperature Classification Geothermalpower.jpg Looking for the Sanyal Temperature Classification page? For detailed information on Sanyal Temperature Classification, click here. Pages in category "Sanyal Temperature Classification" The following 7 pages are in this category, out of 7 total. E Extremely Low Temperature H High Temperature L Low Temperature M Moderate Temperature S Steam Field U Ultra High Temperature V Very Low Temperature Retrieved from

436

Temperature Fitting Method Predicting Equidistant Voltage Drop of ...  

Science Conference Proceedings (OSTI)

High Temperature Compression Test to Determine the Anode Paste ... Temperature Fitting Method Predicting Equidistant Voltage Drop of Anode Nod in  ...

437

A Study of the Irradiation-Temperature Coefficient for Alanine ...  

Science Conference Proceedings (OSTI)

A Study of the Irradiation-Temperature Coefficient for Alanine Film and Pellet Dosimeters at Elevated Temperature. ...

2013-03-01T23:59:59.000Z

438

The Effect of Orientation, Temperature and Gamma Prime Size on ...  

Science Conference Proceedings (OSTI)

along the to Oil> boundry of the standard stereographic triangle ..... strength results between room temperature and the peak temperature since.

439

Commemorating the Historical Contributions of the K-25 Site in Tennessee |  

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

Commemorating the Historical Contributions of the K-25 Site in Commemorating the Historical Contributions of the K-25 Site in Tennessee Commemorating the Historical Contributions of the K-25 Site in Tennessee September 21, 2012 - 10:14am Addthis The 44-acre K-25 superstructure made significant historical contributions during its years of operation. | Photo credit Oak Ridge Office photographer Lynn Freeny. The 44-acre K-25 superstructure made significant historical contributions during its years of operation. | Photo credit Oak Ridge Office photographer Lynn Freeny. Erin Szulman Erin Szulman Special Assistant, Office of Environmental Management What are the key facts? A multi-year plan is in place to commemorate Oak Ridge's K-25 complex. The new agreement will turn the property into an industrial park for future economic development.

440

U.S. Completes Contribution to World's Most Powerful Particle Accelerator |  

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

Completes Contribution to World's Most Powerful Particle Completes Contribution to World's Most Powerful Particle Accelerator U.S. Completes Contribution to World's Most Powerful Particle Accelerator June 30, 2008 - 2:15pm Addthis WASHINGTON, DC - The U.S. contribution to the Large Hadron Collider (LHC) has been completed on budget and ahead of schedule, the U.S. Department of Energy (DOE) and the National Science Foundation (NSF) said today. The LHC, located near Geneva, Switzerland at the CERN laboratory, is the largest international scientific facility ever built. The U.S. contribution, a $531 million investment, consists of several key components of the particle accelerator and the ATLAS and CMS particle detectors. "The success of the U.S. LHC project is based on the quality of the U.S. teams, and national and international collaboration," DOE Under Secretary

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

Low-temperature volumetric receiver concept  

SciTech Connect

This document describes an alternative solar central receiver concept that offers the potential for a substantial reduction in the cost of electrical energy. The concept consists of a low temperature volumetric receiver which supplies 1100/degree/F air to a Kalina cycle heat engine. Hot air can also be supplied to a packed bed of Dresser basalt where the hot air is used to heat the bed. The thermal energy stored in the bed can be extracted and supplied to the Kalina cycle during periods of low insolation. Previous investigations of the volumetric receiver concentrated on high temperature applications. The results showed that the volumetric concept could be very efficient, but the receiver was expensive and there were significant technical problems. Areas of technical uncertainty included fiber durability, the feasibility of inducing a preswirl and cost effective applications. The use of the volumetric receiver to produce low temperature will avoid the problems identified in the high temperature studies. The attractiveness of the low temperature concept is enhanced by the availability of the Kalina cycle. This heat engine was developed as a bottoming cycle for Brayton and Rankine cycle power plants. The key feature of the Kalina cycle is its ability to efficiently utilize the energy in a relatively low temperature heat source. The combination of the low temperature volumetric receiver and the Kalina cycle is particularly interesting. 7 refs., 2 figs., 3 tabs.

Drost, M.K.

1988-09-01T23:59:59.000Z

442

Undulator Hall Air Temperature Fault Scenarios  

SciTech Connect

Recent experience indicates that the LCLS undulator segments must not, at any time following tuning, be allowed to change temperature by more than about {+-}2.5 C or the magnetic center will irreversibly shift outside of acceptable tolerances. This vulnerability raises a concern that under fault conditions the ambient temperature in the Undulator Hall might go outside of the safe range and potentially could require removal and retuning of all the segments. In this note we estimate changes that can be expected in the Undulator Hall air temperature for three fault scenarios: (1) System-wide power failure; (2) Heating Ventilation and Air Conditioning (HVAC) system shutdown; and (3) HVAC system temperature regulation fault. We find that for either a system-wide power failure or an HVAC system shutdown (with the technical equipment left on), the short-term temperature changes of the air would be modest due to the ability of the walls and floor to act as a heat ballast. No action would be needed to protect the undulator system in the event of a system-wide power failure. Some action to adjust the heat balance, in the case of the HVAC power failure with the equipment left on, might be desirable but is not required. On the other hand, a temperature regulation failure of the HVAC system can quickly cause large excursions in air temperature and prompt action would be required to avoid damage to the undulator system.

Sevilla, J.

2010-11-17T23:59:59.000Z

443

High temperature crystalline superconductors from crystallized glasses  

DOE Patents (OSTI)

A method of preparing a high temperature superconductor from an amorphous phase. The method involves preparing a starting material of a composition of Bi.sub.2 Sr.sub.2 Ca.sub.3 Cu.sub.4 Ox or Bi.sub.2 Sr.sub.2 Ca.sub.4 Cu.sub.5 Ox, forming an amorphous phase of the composition and heat treating the amorphous phase for particular time and temperature ranges to achieve a single phase high temperature superconductor.

Shi, Donglu (Downers Grove, IL)

1992-01-01T23:59:59.000Z

444

Temperature measurements of shock-compressed deuterium  

DOE Green Energy (OSTI)

The authors measured the temperatures of single and double-shocked D{sub 2} and H{sub 2} up to 85 GPa (0.85 Mbar) and 5,200 K. While single shock temperatures, at pressures to 23 GPa, agree well with previous models, the double shock temperatures are as much as 40% lower than predicted. This is believed to be caused by molecular dissociation, and a new model of the hydrogen EOS at extreme conditions has been developed which correctly predicts their observations. These data and model have important implications for programs which use condensed-phase hydrogen in implosion systems.

Holmes, N.C.; Ross, M.; Nellis, W.J.

1994-11-01T23:59:59.000Z

445

Symposium on high temperature and materials chemistry  

SciTech Connect

This volume contains the written proceedings of the Symposium on High Temperature and Materials Chemistry held in Berkeley, California on October 24--25, 1989. The Symposium was sponsored by the Materials and Chemical Sciences Division of Lawrence Berkeley Laboratory and by the College of Chemistry of the University of California at Berkeley to discuss directions, trends, and accomplishments in the field of high temperature and materials chemistry. Its purpose was to provide a snapshot of high temperature and materials chemistry and, in so doing, to define status and directions.

1989-10-01T23:59:59.000Z

446

High temperature, minimally invasive optical sensing modules  

DOE Patents (OSTI)

A remote temperature sensing system includes a light source selectively producing light at two different wavelengths and a sensor device having an optical path length that varies as a function of temperature. The sensor receives light emitted by the light source and redirects the light along the optical path length. The system also includes a detector receiving redirected light from the sensor device and generating respective signals indicative of respective intensities of received redirected light corresponding to respective wavelengths of light emitted by the light source. The system also includes a processor processing the signals generated by the detector to calculate a temperature of the device.

Riza, Nabeel Agha (Oviedo, FL); Perez, Frank (Tujunga, CA)

2008-02-05T23:59:59.000Z

447

Low temperature monitoring system for subsurface barriers  

DOE Patents (OSTI)

A system for monitoring temperature of a subsurface low temperature zone is described. The system includes a plurality of freeze wells configured to form the low temperature zone, one or more lasers, and a fiber optic cable coupled to at least one laser. A portion of the fiber optic cable is positioned in at least one freeze well. At least one laser is configured to transmit light pulses into a first end of the fiber optic cable. An analyzer is coupled to the fiber optic cable. The analyzer is configured to receive return signals from the light pulses.

Vinegar, Harold J. (Bellaire, TX); McKinzie, II. Billy John (Houston, TX)

2009-08-18T23:59:59.000Z

448

Modified Nose-Hoover thermostat for solid state for constant temperature molecular dynamics simulation  

SciTech Connect

Nose-Hoover (NH) thermostat methods incorporated with molecular dynamics (MD) simulation have been widely used to simulate the instantaneous system temperature and feedback energy in a canonical ensemble. The method simply relates the kinetic energy to the system temperature via the particles' momenta based on the ideal gas law. However, when used in a tightly bound system such as solids, the method may suffer from deriving a lower system temperature and potentially inducing early breaking of atomic bonds at relatively high temperature due to the neglect of the effect of the potential energy of atoms based on solid state physics. In this paper, a modified NH thermostat method is proposed for solid system. The method takes into account the contribution of phonons by virtue of the vibrational energy of lattice and the zero-point energy, derived based on the Debye theory. Proof of the equivalence of the method and the canonical ensemble is first made. The modified NH thermostat is tested on different gold nanocrystals to characterize their melting point and constant volume specific heat, and also their size and temperature dependence. Results show that the modified NH method can give much more comparable results to both the literature experimental and theoretical data than the standard NH. Most importantly, the present model is the only one, among the six thermostat algorithms under comparison, that can accurately reproduce the experimental data and also the T{sup 3}-law at temperature below the Debye temperature, where the specific heat of a solid at constant volume is proportional to the cube of temperature.

Chen, Wen-Hwa, E-mail: whchen@pme.nthu.edu.tw [Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan (China); National Applied Research Laboratories, Taipei 10622, Taiwan, ROC (China); Wu, Chun-Hung [Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Cheng, Hsien-Chie [Department of Aerospace and Systems Engineering, Feng Chia University, Taichung 40724, Taiwan (China)

2011-07-10T23:59:59.000Z

449

Gas Viscosity at High Pressure and High Temperature  

E-Print Network (OSTI)

Gas viscosity is one of the gas properties that is vital to petroleum engineering. Its role in the oil and gas production and transportation is indicated by its contribution in the resistance to the flow of a fluid both in porous media and pipes. Although viscosity of some pure components such as methane, ethane, propane, butane, nitrogen, carbon dioxide and binary mixtures of these components at low-intermediate pressure and temperature had been studied intensively and been understood thoroughly, very few investigations were performed on viscosity of naturally occurring gases, especially gas condensates at low-intermediate pressure and temperature, even fewer lab data were published. No gas viscosity data at high pressures and high temperatures (HPHT) is available. Therefore this gap in the oil industry still needs to be filled. Gas viscosity at HPHT becomes crucial to modern oil industry as exploration and production move to deep formation or deep water where HPHT is not uncommon. Therefore, any hydrocarbon encountered there is more gas than oil due to the chemical reaction causing oil to transfer to gas as temperature increases. We need gas viscosity to optimize production rate for production system, estimate reserves, model gas injection, design drilling fluid, and monitor gas movement in well control. Current gas viscosity correlations are derived using measured data at low-moderate pressures and temperatures, and then extrapolated to HPHT. No measured gas viscosities at HPHT are available so far. The validities of these correlations for gas viscosity at HPHT are doubted due to lack of experimental data. In this study, four types of viscometers are evaluated and their advantages and disadvantages are listed. The falling body viscometer is used to measure gas viscosity at a pressure range of 3000 to 25000 psi and a temperature range of 100 to 415 oF. Nitrogen viscosity is measured to take into account of the fact that the concentration of nonhydrocarbons increase drastically in HPHT reservoir. More nitrogen is found as we move to HPHT reservoirs. High concentration nitrogen in natural gas affects not only the heat value of natural gas, but also gas viscosity which is critical to petroleum engineering. Nitrogen is also one of common inject gases in gas injection projects, thus an accurate estimation of its viscosity is vital to analyze reservoir performance. Then methane viscosity is measured to honor that hydrocarbon in HPHT which is almost pure methane. From our experiments, we found that while the Lee-Gonzalez-Eakin correlation estimates gas viscosity at a low-moderate pressure and temperature accurately, it cannot give good match of gas viscosity at HPHT. Apparently, current correlations need to be modified to predict gas viscosity at HPHT. New correlations constructed for HPHT conditions based on our experiment data give more confidence on gas viscosity.

Ling, Kegang

2010-12-01T23:59:59.000Z

450

Natural Gas Weekly Update, Printer-Friendly Version  

Gasoline and Diesel Fuel Update (EIA)

6 (next release 2:00 p.m. on February 23, 6 (next release 2:00 p.m. on February 23, 2006) Winter-like conditions in much of the East this past weekend transitioned to above-normal temperatures, contributing to a further decline in natural gas spot prices this week (Wednesday, February 8 - Wednesday, February 15). On the week the Henry Hub spot price declined 57 cents per MMBtu to $7.31. At the New York Mercantile Exchange (NYMEX), prices for futures contracts also registered significant declines. The futures contract for March delivery, which is the last contract for the current heating season, declined 66.9 cents per MMBtu on the week to $7.066. Relatively high levels of natural gas in working storage and falling prices for competing fuels likely contributed to falling natural gas prices this week. Working gas in

451

Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors  

DOE Patents (OSTI)

A method and apparatus for temperature measurement especially suited for low cost, low power, moderate accuracy implementation. It uses a sensor whose resistance varies in a known manner, either linearly or nonlinearly, with temperature, and produces a digital output which is proportional to the temperature of the sensor. The method is based on performing a zero-crossing time measurement of a step input signal that is double differentiated using two differentiators functioning as respective first and second time constants; one temperature stable, and the other varying with the sensor temperature. 5 figs.

Britton, C.L. Jr.; Ericson, M.N.

1999-01-19T23:59:59.000Z

452

Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors  

DOE Patents (OSTI)

A method and apparatus for temperature measurement especially suited for low cost, low power, moderate accuracy implementation. It uses a sensor whose resistance varies in a known manner, either linearly or nonlinearly, with temperature, and produces a digital output which is proportional to the temperature of the sensor. The method is based on performing a zero-crossing time measurement of a step input signal that is double differentiated using two differentiators functioning as respective first and second time constants; one temperature stable, and the other varying with the sensor temperature.

Britton, Jr., Charles L. (Alcoa, TN); Ericson, M. Nance (Knoxville, TN)

1999-01-01T23:59:59.000Z

453

THERMAL REACTIONS OF OXYGEN ATOMS WITH ALKENES AT LOW TEMPERATURES ON INTERSTELLAR DUST  

SciTech Connect

Laboratory experiments show that the thermal heterogeneous reactions of oxygen atoms may contribute to the synthesis of epoxides in interstellar clouds. The data set also indicates that the contribution of these pathways to epoxide formation, in comparison to non-thermal routes, is likely to be strongly temperature dependent. Our results indicate that an increased abundance of epoxides, relative to the corresponding aldehydes, could be an observational signature of a significant contribution to molecular oxidation via thermal O atom reactions with alkenes. Specifically surface science experiments show that both C{sub 2}H{sub 4}O and C{sub 3}H{sub 6}O are readily formed from reactions of ethene and propene molecules with thermalized oxygen atoms at temperatures in the range of 12-90 K. It is clear from our experiments that these reactions, on a graphite surface, proceed with significantly reduced reaction barriers compared with those operating in the gas phase. For both the C{sub 2}H{sub 4} + O and the C{sub 3}H{sub 6} + O reactions, the surface reaction barriers we determine are reduced by approximately an order of magnitude compared with the barriers in the gas phase. The modeling of our experimental results, which determines these reaction barriers, also extracts desorption energies and rate coefficients for the title reactions. Our results clearly show that the major product from the O + C{sub 2}H{sub 4} reaction is ethylene oxide, an epoxide.

Ward, Michael D.; Price, Stephen D., E-mail: Michael.Ward@ucl.ac.uk, E-mail: s.d.price@ucl.ac.uk [Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ (United Kingdom)

2011-11-10T23:59:59.000Z

454

Quark Loop Contributions to Neutron, Deuteron, and Mercury EDMs from Supersymmetry without R parity  

E-Print Network (OSTI)

We present a detailed analysis of the neutron, deuteron and mercury electric dipole moment from supersymmetry without R parity, focusing on the quark-scalar loop contributions. Being proportional to top Yukawa and top mass, such contributions are often large. Analytical expressions illustrating the explicit role of the R-parity violating parameters are given following perturbative diagonalization of mass-squared matrices for the scalars. Dominant contributions come from the combinations $B_i \\lambda^{\\prime}_{ij1}$ for which we obtain robust bounds. It turns out that neutron and deuteron EDMs receive much stronger contributions than mercury EDM and any null result at the future deuteron EDM experiment or Los Alamos neutron EDM experiment can lead to extra-ordinary constraints on RPV parameter space. Even if R-parity violating couplings are real, CKM phase does induce RPV contribution and for some cases such a contribution is as strong as contribution from phases in the R-parity violating couplings.Hence, we have bounds directly on $|B_i \\lambda^{\\prime}_{ij1}|$ even if the RPV parameters are all real. Interestingly, even if slepton mass and/or $\\mu_0$ is as high as 1 TeV, it still leads to neutron EDM that is an order of magnitude larger than the sensitivity at Los Alamos experiment. Since the results are not much sensitive to $\\tan \\beta$, our constraints will survive even if other observables tighten the constraints on $\\tan \\beta$.

Chan-Chi Chiou; Otto C. W. Kong; Rishikesh D. Vaidya

2007-05-27T23:59:59.000Z

455

earth skin temperature | OpenEI  

Open Energy Info (EERE)

earth skin temperature earth skin temperature Dataset Summary Description (Abstract): Earth Skin Temperature (° C)NASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Nov 2007)22-year Monthly & Annual Average (July 1983 - June 2005)Parameter: Earth Skin Temperature (deg C)Internet: http://eosweb.larc.nasa.gov/sse/Note 1: SSE Methodology & Accuracy sections onlineNote 2: Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; positive values are north and east. Boundaries of the -90/-180 region Source U.S. National Aeronautics and Space Administration (NASA), Surface meteorology and Solar Energy (SSE) Date Released March 31st, 2009 (5 years ago) Date Updated April 01st, 2009 (5 years ago) Keywords climate

456

A Review of Cooperative Temperature Data Validation  

Science Conference Proceedings (OSTI)

The network of about 5600 cooperative stations in the United States provides the baseline temperature data upon which most climatologies are based. Since the data serve between 40 000 and 50 000 primary users each year, and untold secondary users,...

Nathaniel B. Guttman; Robert G. Quayle

1990-04-01T23:59:59.000Z

457

Change in Global Temperature: A Statistical Analysis  

Science Conference Proceedings (OSTI)

This paper investigates several issues relating to global climatic change using statistical techniques that impose minimal restrictions on the data. The main findings are as follows: 1) The global temperature increase since the last century is a ...

Gordon R. Richards

1993-03-01T23:59:59.000Z

458

The Russian Surface Temperature Data Set  

Science Conference Proceedings (OSTI)

A Russian group, under the initial leadership of M. I. Budyko, has produced the first comprehensive analysis of monthly average surface temperature (January 1891 through May 1980) for the Northern Hemisphere on a 5°×10° latitude-longitude grid. ...

Alan Robock

1982-12-01T23:59:59.000Z

459

Pressure Temperature Log | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Pressure Temperature Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Pressure Temperature Log Details Activities (13) Areas (13) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Perturbations in temperature or pressure can be indicative of faults or other structural features Hydrological: fluid cirulation, over-pressured zones, and under-pressured zones. Thermal: Temperature profile with depth Cost Information Low-End Estimate (USD): 0.6060 centUSD 6.0e-4 kUSD

460

Static Temperature Survey | Open Energy Information  

Open Energy Info (EERE)

Static Temperature Survey Static Temperature Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Static Temperature Survey Details Activities (28) Areas (24) Regions (2) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Testing Techniques Parent Exploration Technique: Well Testing Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Extrapolate the true temperature of the formation the well penetrates Cost Information Low-End Estimate (USD): 0.2525 centUSD 2.5e-4 kUSD 2.5e-7 MUSD 2.5e-10 TUSD / foot Median Estimate (USD): 0.3535 centUSD 3.5e-4 kUSD 3.5e-7 MUSD 3.5e-10 TUSD / foot High-End Estimate (USD): 0.7575 centUSD 7.5e-4 kUSD 7.5e-7 MUSD

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

NASA GISS Surface Temperature (GISTEMP) Analysis  

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

NASA GISS Surface Temperature (GISTEMP) Analysis NASA GISS Surface Temperature (GISTEMP) Analysis DOI: 10.3334/CDIAC/cli.001 Graphics Graphics data Data Contributors Hansen, J.E.,1 R. Ruedy,2 M. Sato,3 and K. Lo2 1National Aeronautics and Space Administration, 2SGT, Inc., 3Columbia University, Center for Climate Systems Research, NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025 USA Period of Record 1880-2012 (Anomalies are relative to the 1951-80 base period means.) Methods The NASA GISS Surface Temperature (GISTEMP) analysis provides a measure of the changing global surface temperature with monthly resolution for the period since 1880, when a reasonably global distribution of meteorological stations was established. The input data Hansen et al. use for the analysis, collected by many national meteorological services around the

462

ARM - Measurement - Longwave narrowband brightness temperature  

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

narrowband brightness temperature narrowband brightness temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Longwave narrowband brightness temperature A descriptive measure of radiation in terms of the temperature of a hypothetical black body emitting an identical amount of radiation in the same narrow band of wavelengths. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments IRT : Infrared Thermometer Field Campaign Instruments RAD-AIR : Airborne Radiometers

463

Industrial low temperature utilization of geothermal resources  

SciTech Connect

This brief presentation on industrial utilization of low temperature geothermal resources first considers an overview of what has been achieved in using geothermal resources in this way and, second, considers potential, future industrial applications.

Howard, J.H.

1976-05-01T23:59:59.000Z

464

Local Climate Zones for Urban Temperature Studies  

Science Conference Proceedings (OSTI)

The effect of urban development on local thermal climate is widely documented in scientific literature. Observations of urban–rural air temperature differences—or urban heat islands (UHIs)—have been reported for cities and regions worldwide, often with ...

I. D. Stewart; T. R. Oke

2012-12-01T23:59:59.000Z

465

Low temperature joining of ceramic composites  

DOE Patents (OSTI)

A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or cermaic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix.

Barton, Thomas J. (Ames, IA); Anderson, Iver E. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Nosrati, Mohammad (Ames, IA); Unal, Ozer (Ames, IA)

2001-04-10T23:59:59.000Z

466

Low temperature joining of ceramic composites  

DOE Patents (OSTI)

A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or cermaic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix.

Barton, Thomas J. (Ames, IA); Anderson, Iver E. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Nosrati, Mohammad (Ames, IA); Unal, Ozer (Ames, IA)

1999-01-12T23:59:59.000Z

467

Low temperature joining of ceramic composites  

DOE Patents (OSTI)

A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix. 3 figs.

Barton, T.J.; Anderson, I.E.; Ijadi-Maghsoodi, S.; Nosrati, M.; Unal, O.

1999-01-12T23:59:59.000Z

468

Low temperature joining of ceramic composites  

DOE Patents (OSTI)

A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 C to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix. 3 figs.

Barton, T.J.; Anderson, I.E.; Ijadi-Maghsoodi, S.; Nosrati, M.; Unal, O.

1999-07-13T23:59:59.000Z

469

Low temperature joining of ceramic composites  

DOE Patents (OSTI)

A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix.

Barton, Thomas J. (Ames, IA); Anderson, Iver E. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Nosrati, Mohammad (Ames, IA); Unal, Ozer (Ames, IA)

1999-07-13T23:59:59.000Z

470

On Formulas for Equivalent Potential Temperature  

Science Conference Proceedings (OSTI)

Several new formulas for pseudoadiabatic equivalent potential temperature (EPT) are devised and compared to previous ones. The maximum errors of all the formulas are determined from calculations on a dense grid of points in the region of a ...

Robert Davies-Jones

2009-09-01T23:59:59.000Z

471

Casimir forces between cylinders at different temperatures  

E-Print Network (OSTI)

We study Casimir interactions between cylinders in thermal nonequilibrium, where the objects as well as the environment are held at different temperatures. We provide the general formula for the force, in a one reflection ...

Golyk, Vladyslav A.

472

Alpine Stream Temperature Response to Storm Events  

Science Conference Proceedings (OSTI)

Despite continued interest in meteorological influences on the thermal variability of river systems, there are few detailed studies of stream temperature dynamics during storm events. This paper reports high-resolution (15 min) water column and ...

Lee E. Brown; David M. Hannah

2007-08-01T23:59:59.000Z

473

A Classification Scheme for Satellite Temperature Retrievals  

Science Conference Proceedings (OSTI)

A new approach is presented to the problem of specifying constraints on retrieval estimators used to calculate vertical temperature profiles from satellite measurements of upwelling radiance. An unsupervised classification scheme determines the ...

M. J. Uddstrom; D. Q. Wark

1985-01-01T23:59:59.000Z

474

Temperature and Magnetic Field Dependence of Electrical ...  

Science Conference Proceedings (OSTI)

Design of Pre-Weakening and Evaluation of Structural Safety for Explosive ... Crystallization Temperature of Pd-Cu-Si System Using Integrated Thin Film Samples ... Mechanical Properties of 5083 Aluminium Welds after Manual and Automatic ...

475

Finite temperature field theory and phase transitions  

E-Print Network (OSTI)

We review different aspects of field theory at zero and finite temperature, related to the theory of phase transitions. We discuss different renormalization conditions for the effective potential at zero temperature, emphasizing in particular the MS-bar renormalization scheme. Finite temperature field theory is discussed in the real and imaginary time formalisms, showing their equivalence in simple examples. Bubble nucleation by thermal tunneling, and the subsequent development of the phase transition is described in some detail. Some attention is also devoted to the breakdown of the perturbative expansion and the infrared problem in the finite temperature field theory. Finally the application to baryogenesis at the electroweak phase transition is done in the Standard Model and in the Minimal Supersymmetric Standard Model. In all cases we have translated the condition of not washing out any previously generated baryon asymmetry by upper bounds on the Higgs mass.

Mariano Quiros

1999-01-14T23:59:59.000Z

476

Probabilistic Multimodel Regional Temperature Change Projections  

Science Conference Proceedings (OSTI)

Regional temperature change projections for the twenty-first century are generated using a multimodel ensemble of atmosphere–ocean general circulation models. The models are assigned coefficients jointly, using a Bayesian linear model fitted to ...

Arthur M. Greene; Lisa Goddard; Upmanu Lall

2006-09-01T23:59:59.000Z

477

Review of Radiosonde Humidity and Temperature Errors  

Science Conference Proceedings (OSTI)

An attempt is made to provide a brief but comprehensive summary of sources of error in National Weather Service upper air data, and a guide to the relevant literature. Error analysis must be tailored for particular applications. Temperature ...

Robert W. Pratt

1985-09-01T23:59:59.000Z

478

Contrails, Natural Clouds, and Diurnal Temperature Range  

Science Conference Proceedings (OSTI)

The direct impact of aircraft condensation trails (contrails) on surface temperature in regions of high aircraft density has been a matter of recent debate in climate research. Based on data analysis for the 3-day aviation grounding period over ...

Simone Dietmüller; Michael Ponater; Robert Sausen; Klaus-Peter Hoinka; Susanne Pechtl

2008-10-01T23:59:59.000Z

479

Diamond growth at low substrate temperatures  

DOE Patents (OSTI)

Diamond films are deposited on silicon wafers at a temperature of less than 600{degree}C by a microwave plasma-assisted chemical vapor deposition process using methane in hydrogen as a source of carbon. 9 refs., 3 figs.

Hsu, W.L.; Tung, D.M.

1990-01-01T23:59:59.000Z

480

Diamond growth at low substrate temperatures  

DOE Patents (OSTI)

Diamond films are deposited on silicon wafers at a temperature of less than 600{degree}C by a microwave plasma-assisted chemical vapor deposition process using methane in hydrogen as a source of carbon. 9 refs., 3 figs.

Hsu, W.L.; Tung, D.M.

1990-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "above-normal temperatures contributing" 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

On the Interpretation of Antarctic Temperature Trends  

Science Conference Proceedings (OSTI)

Determining the rate of atmospheric warming in Antarctica is hampered by the brevity of the temperature records (<50 years), which still contain signals of decadal circulation variability in the Southern Hemisphere. In this note it is ...

Michiel R. van den Broeke

2000-11-01T23:59:59.000Z

482

Downhole Temperature Prediction for Drilling Geothermal Wells  

DOE Green Energy (OSTI)

Unusually high temperatures are encountered during drilling of a geothermal well. These temperatures affect every aspect of drilling, from drilling fluid properties to cement formulations. Clearly, good estimates of downhole temperatures during drilling would be helpful in preparing geothermal well completion designs, well drilling plans, drilling fluid requirements, and cement formulations. The thermal simulations in this report were conducted using GEOTEMP, a computer code developed under Sandia National Laboratories contract and available through Sandia. Input variables such as drilling fluid inlet temperatures and circulation rates, rates of penetration, and shut-in intervals were obtained from the Imperial Valley East Mesa Field and the Los Alamos Hot Dry Rock Project. The results of several thermal simulations are presented, with discussion of their impact on drilling fluids, cements, casing design, and drilling practices.

Mitchell, R. F.

1981-01-01T23:59:59.000Z

483

Water Volume as Function of Temperature (Cold)  

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

Water Volume as Function of Temperature (Cold) Name: Hank Status: student Grade: 9-12 Location: MA Country: USA Date: Winter 2011-2012 Question: At normal atmospheric pressure, and...

484

Surface Temperature Observations from AVHRR in FIFE  

Science Conference Proceedings (OSTI)

Observations of the surface radiometric temperature by the AVHRR sensor on board the NOAA-9 satellite during the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment conducted in central Kansas during 1987 are ...

T. J. Schmugge; G. M. Schmidt

1998-04-01T23:59:59.000Z

485

Photovoltaic cell efficiency at elevated temperatures  

E-Print Network (OSTI)

In order to determine what type of photovoltaic solar cell could best be used in a thermoelectric photovoltaic hybrid power generator, we tested the change in efficiency due to higher temperatures of three types of solar ...

Ray, Katherine Leung

2010-01-01T23:59:59.000Z

486

Interactive Cloud Formation and Climatic Temperature Perturbations  

Science Conference Proceedings (OSTI)

A one-dimensional climate model with an interactive cloud formation program is developed to investigate its effects on temperature perturbations due to various radiative forcings including doubling of CO2, a 2% increase of the solar constant and ...

Kuo-Nan Liou; S. C. S. Ou; P. J. Lu

1985-10-01T23:59:59.000Z

487

TRENDS: Global and Hemispheric Temperature Anomalies  

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

Global and Hemispheric Temperature Anomalies - Land and Marine Instrumental Records graphics Graphics data Data Investigators P. D. Jones1, D. E. Parker2, T. J. Osborn1, and K. R....

488

Solar Eclipse Effect on Shelter Air Temperature  

Science Conference Proceedings (OSTI)

Decreases in shelter temperature during eclipse events were quantified on the basis of observations, numerical model simulations, and complements conceptual evaluations. Observations for the annular eclipse on 10 May 1994 over the United States ...

M. Segal; R. W. Turner; J. Prusa; R. J. Bitzer; S. V. Finley

1996-01-01T23:59:59.000Z

489

Lag Relationships Involving Tropical Sea Surface Temperatures  

Science Conference Proceedings (OSTI)

A long historical record (100 years) of monthly sea surface temperature anomalies from the Comprehensive Ocean–Atmosphere Data Set was used to examined the lag relationships between different locations in the global Tropics. Application of ...

John R. Lanzante

1996-10-01T23:59:59.000Z

490

The Computation of Equivalent Potential Temperature  

Science Conference Proceedings (OSTI)

A simplified procedure is described for computation of equivalent potential temperature which remains valid in situations such as in the tropics where a term which is omitted in the derivation of the conventional formula can lead to an error of ...

David Bolton

1980-07-01T23:59:59.000Z

491

Assimilation of Satellite Sea Surface Temperature Retrievals  

Science Conference Proceedings (OSTI)

The Workshop on Assimilation of Satellite Sea Surface Temperatures (SST) Retrievals was held on 24–26 April 2001 in Camp Springs, Mary-land, at the National Oceanic and Atmospheric Administration (NOAA) Science Center. The purpose of the workshop ...

Andrew Harris; Eileen Maturi

2003-11-01T23:59:59.000Z

492

THE TRANSPOSED CRITICAL TEMPERATURE RANKINE THERMODYNAMIC CYCLE  

E-Print Network (OSTI)

to a forced draft wet cooling tower. All major parasiticpinch points and cooling tower approach temperatureP @ Pinch point AT Q Cooling tower T Condensing T point AT 0

Pope, William L.

2012-01-01T23:59:59.000Z

493

Analytic Representations of Standard Atmosphere Temperature Profiles  

Science Conference Proceedings (OSTI)

Analytic functions which approximate six commonly used standard temperature profiles (the AFGL set, and the 1976 U.S. Standard) are described. These provide a uniform way of rounding off the sharp corners of the original models, and have been ...

Stephen B. Fels

1986-01-01T23:59:59.000Z

494

Low-Temperature Calibration of Infrared Thermometers  

Science Conference Proceedings (OSTI)

A method was developed for calibrating infrared thermometers to properly measure target temperatures ranging from ?70 to 0°C. Once calibrated for this range, the thermometer can then be used to measure the flux of thermal radiation from the sky. ...

B. A. Kimball; S. T. Mitchell

1984-12-01T23:59:59.000Z

495

The Temperature of Evaporating Sea Spray Droplets  

Science Conference Proceedings (OSTI)

Evaporating sea spray droplets are often assumed to be at the temperature of a well-ventilated wet-bulb thermometer, Twet. Although this assumption may be accurate enough in practice, it is incorrect on theoretical grounds. Spray droplets have ...

Edgar L. Andreas

1995-04-01T23:59:59.000Z

496

Robust Automated Quality Assurance of Radiosonde Temperatures  

Science Conference Proceedings (OSTI)

This paper presents a description of the fully automated quality-assurance (QA) procedures that are being applied to temperatures in the Integrated Global Radiosonde Archive (IGRA). Because these data are routinely used for monitoring variations ...

Imke Durre; Russell S. Vose; David B. Wuertz

2008-08-01T23:59:59.000Z

497

Notes on Temperature-Dependent Lidar Equations  

Science Conference Proceedings (OSTI)

The temperature dependence of molecular backscatter coefficients must be taken into account when narrowband interference filters are used in lidar measurements. Thus, the spectral backscatter differential cross section of the molecules involved ...

Mariana Adam

2009-06-01T23:59:59.000Z

498

The Oklahoma Mesonet's Skin Temperature Network  

Science Conference Proceedings (OSTI)

In 1999, the Oklahoma Mesonet deployed infrared temperature (IRT) sensors at 89 of its environmental monitoring stations. A 3-yr dataset collected since that time provides a unique opportunity to analyze longer-term, continuous, mesoscale ...

Christopher A. Fiebrich; Janet E. Martinez; Jerald A. Brotzge; Jeffrey B. Basara

2003-11-01T23:59:59.000Z

499

Temperature distributions in electron beam welding cavities  

SciTech Connect

Surface temperatures in electron beam welding cavities in stainless steel 304 and aluminum 1100, 2024, and 6061 were measured with a narrow band infrared radiation pyrometer. A special device was designed for mounting the radiation-sensing probe next to the electron beam gun in the welding chamber. This mounting device included a mechanism for oscillating the probe so as to scan the cavity region both perpendicular and parallel to the welding direction. At the center of its movement the probe viewed almost directly down into the welding cavity. The effect of interreflections occurring in the welding cavity were accounted for by the use of an apparent spectral cavity emittance. Typical measured cavity temperature distributions for SS-304 ranged from 1950/sup 0/C at the mouth to a peak of 2350/sup 0/C at the cavity base and from 1300 to 1650/sup 0/C for A1-1100. First approximation predictions of the cavity surface temperatures were determined by assuming a quasi-steady-state condition. The surface temperature is then a function of the vapor pressure, which is required to balance the surface tension and the hydrostatic pressure both of which tend to collapse the cavity. Base temperatures thus predicted were about 5% and 10% higher than measured for SS-304 and A1-1100, respectively. It was determined that EB welding cavity base surface temperatures are relatively constant with varying penetration depth because they are more strongly dependent on the curvature at the base than on the penetration depth. Average peak temperatures for SS-304, A1-1100, A1-6061, and A1-2024 were measured to be approximately 2300, 1700, 1525, and 1475/sup 0/C, respectively. The peak temperatures were lower for A1-6061 and A1-2024 than for A1-1100 because they contained a significant amount of magnesium and zinc, both of which have comparatively high vapor pressures.

Shintaku, S.M.

1976-07-15T23:59:59.000Z

500

Live Work on High Temperature Conductors  

Science Conference Proceedings (OSTI)

Feedback from field personnel working with high-temperature conductors indicates that when a dead-end compression yoke assembly (DCYA) is installed on the conductor according to normal utility procedures, the soft aluminum strands are deformed and "birdcage." This is of course a concern to the field crews and the utility operating the line. This report presents results of research and tests performed on selected conductors operating at high temperature (approximately 250-260°C) with selected live wor...

2011-12-13T23:59:59.000Z