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1

HEAVY WATER COMPONENTS TEST REACTOR DECOMMISSIONING  

Science Conference Proceedings (OSTI)

The Heavy Water Components Test Reactor (HWCTR) Decommissioning Project was initiated in 2009 as a Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) Removal Action with funding from the American Recovery and Reinvestment Act (ARRA). This paper summarizes the history prior to 2009, the major D&D activities, and final end state of the facility at completion of decommissioning in June 2011. The HWCTR facility was built in 1961, operated from 1962 to 1964, and is located in the northwest quadrant of the Savannah River Site (SRS) approximately three miles from the site boundary. The HWCTR was a pressurized heavy water test reactor used to develop candidate fuel designs for heavy water power reactors. In December of 1964, operations were terminated and the facility was placed in a standby condition as a result of the decision by the U.S. Atomic Energy Commission to redirect research and development work on heavy water power reactors to reactors cooled with organic materials. For about one year, site personnel maintained the facility in a standby status, and then retired the reactor in place. In the early 1990s, DOE began planning to decommission HWCTR. Yet, in the face of new budget constraints, DOE deferred dismantlement and placed HWCTR in an extended surveillance and maintenance mode. The doors of the reactor facility were welded shut to protect workers and discourage intruders. In 2009 the $1.6 billion allocation from the ARRA to SRS for site footprint reduction at SRS reopened the doors to HWCTR - this time for final decommissioning. Alternative studies concluded that the most environmentally safe, cost effective option for final decommissioning was to remove the reactor vessel, both steam generators, and all equipment above grade including the dome. The transfer coffin, originally above grade, was to be placed in the cavity vacated by the reactor vessel and the remaining below grade spaces would be grouted. Once all above equipment including the dome was removed, a concrete cover was to be placed over the remaining footprint and the groundwater monitored for an indefinite period to ensure compliance with environmental regulations.

Austin, W.; Brinkley, D.

2011-10-13T23:59:59.000Z

2

Heavy Water Components Test Reactor Decommissioning - Major Component Removal  

SciTech Connect

The Heavy Water Components Test Reactor (HWCTR) facility (Figure 1) was built in 1961, operated from 1962 to 1964, and is located in the northwest quadrant of the Savannah River Site (SRS) approximately three miles from the site boundary. The HWCTR facility is on high, well-drained ground, about 30 meters above the water table. The HWCTR was a pressurized heavy water test reactor used to develop candidate fuel designs for heavy water power reactors. It was not a defense-related facility like the materials production reactors at SRS. The reactor was moderated with heavy water and was rated at 50 megawatts thermal power. In December of 1964, operations were terminated and the facility was placed in a standby condition as a result of the decision by the U.S. Atomic Energy Commission to redirect research and development work on heavy water power reactors to reactors cooled with organic materials. For about one year, site personnel maintained the facility in a standby status, and then retired the reactor in place. In 1965, fuel assemblies were removed, systems that contained heavy water were drained, fluid piping systems were drained, deenergized and disconnected and the spent fuel basin was drained and dried. The doors of the reactor facility were shut and it wasn't until 10 years later that decommissioning plans were considered and ultimately postponed due to budget constraints. In the early 1990s, DOE began planning to decommission HWCTR again. Yet, in the face of new budget constraints, DOE deferred dismantlement and placed HWCTR in an extended surveillance and maintenance mode. The doors of the reactor facility were welded shut to protect workers and discourage intruders. The $1.6 billion allocation from the American Recovery and Reinvestment Act to SRS for site clean up at SRS has opened the doors to the HWCTR again - this time for final decommissioning. During the lifetime of HWCTR, 36 different fuel assemblies were tested in the facility. Ten of these experienced cladding failures as operational capabilities of the different designs were being established. In addition, numerous spills of heavy water occurred within the facility. Currently, radiation and radioactive contamination levels are low within HWCTR with most of the radioactivity contained within the reactor vessel. There are no known insults to the environment, however with the increasing deterioration of the facility, the possibility exists that contamination could spread outside the facility if it is not decommissioned. An interior panoramic view of the ground floor elevation taken in August 2009 is shown in Figure 2. The foreground shows the transfer coffin followed by the reactor vessel and control rod drive platform in the center. Behind the reactor vessel is the fuel pool. Above the ground level are the polar crane and the emergency deluge tank at the top of the dome. Note the considerable rust and degradation of the components and the interior of the containment building. Alternative studies have concluded that the most environmentally safe, cost effective option for final decommissioning is to remove the reactor vessel, steam generators, and all equipment above grade including the dome. Characterization studies along with transport models have concluded that the remaining below grade equipment that is left in place including the transfer coffin will not contribute any significant contamination to the environment in the future. The below grade space will be grouted in place. A concrete cover will be placed over the remaining footprint and the groundwater will be monitored for an indefinite period to ensure compliance with environmental regulations. The schedule for completion of decommissioning is late FY2011. This paper describes the concepts planned in order to remove the major components including the dome, the reactor vessel (RV), the two steam generators (SG), and relocating the transfer coffin (TC).

Austin, W.; Brinkley, D.

2010-05-05T23:59:59.000Z

3

Heavy Water Components Test Reactor Decommissioning - Major Component Removal  

SciTech Connect

The Heavy Water Components Test Reactor (HWCTR) facility (Figure 1) was built in 1961, operated from 1962 to 1964, and is located in the northwest quadrant of the Savannah River Site (SRS) approximately three miles from the site boundary. The HWCTR facility is on high, well-drained ground, about 30 meters above the water table. The HWCTR was a pressurized heavy water test reactor used to develop candidate fuel designs for heavy water power reactors. It was not a defense-related facility like the materials production reactors at SRS. The reactor was moderated with heavy water and was rated at 50 megawatts thermal power. In December of 1964, operations were terminated and the facility was placed in a standby condition as a result of the decision by the U.S. Atomic Energy Commission to redirect research and development work on heavy water power reactors to reactors cooled with organic materials. For about one year, site personnel maintained the facility in a standby status, and then retired the reactor in place. In 1965, fuel assemblies were removed, systems that contained heavy water were drained, fluid piping systems were drained, deenergized and disconnected and the spent fuel basin was drained and dried. The doors of the reactor facility were shut and it wasn't until 10 years later that decommissioning plans were considered and ultimately postponed due to budget constraints. In the early 1990s, DOE began planning to decommission HWCTR again. Yet, in the face of new budget constraints, DOE deferred dismantlement and placed HWCTR in an extended surveillance and maintenance mode. The doors of the reactor facility were welded shut to protect workers and discourage intruders. The $1.6 billion allocation from the American Recovery and Reinvestment Act to SRS for site clean up at SRS has opened the doors to the HWCTR again - this time for final decommissioning. During the lifetime of HWCTR, 36 different fuel assemblies were tested in the facility. Ten of these experienced cladding failures as operational capabilities of the different designs were being established. In addition, numerous spills of heavy water occurred within the facility. Currently, radiation and radioactive contamination levels are low within HWCTR with most of the radioactivity contained within the reactor vessel. There are no known insults to the environment, however with the increasing deterioration of the facility, the possibility exists that contamination could spread outside the facility if it is not decommissioned. An interior panoramic view of the ground floor elevation taken in August 2009 is shown in Figure 2. The foreground shows the transfer coffin followed by the reactor vessel and control rod drive platform in the center. Behind the reactor vessel is the fuel pool. Above the ground level are the polar crane and the emergency deluge tank at the top of the dome. Note the considerable rust and degradation of the components and the interior of the containment building. Alternative studies have concluded that the most environmentally safe, cost effective option for final decommissioning is to remove the reactor vessel, steam generators, and all equipment above grade including the dome. Characterization studies along with transport models have concluded that the remaining below grade equipment that is left in place including the transfer coffin will not contribute any significant contamination to the environment in the future. The below grade space will be grouted in place. A concrete cover will be placed over the remaining footprint and the groundwater will be monitored for an indefinite period to ensure compliance with environmental regulations. The schedule for completion of decommissioning is late FY2011. This paper describes the concepts planned in order to remove the major components including the dome, the reactor vessel (RV), the two steam generators (SG), and relocating the transfer coffin (TC).

Austin, W.; Brinkley, D.

2010-05-05T23:59:59.000Z

4

CHARACTERIZATION OF RADIOACTIVITY IN THE REACTOR VESSEL OF THE HEAVY WATER COMPONENT TEST REACTOR  

Science Conference Proceedings (OSTI)

The Heavy Water Component Test Reactor (HWCTR) facility is a pressurized heavy water reactor that was used to test candidate fuel designs for heavy water power reactors. The reactor operated at nominal power of 50 MW{sub th}. The reactor coolant loop operated at 1200 psig and 250 C. Two isolated test loop were designed into the reactor to provide special test conditions. Fig. 1 shows a cut-away view of the reactor. The two loops are contained in four inch diameter stainless steel piping. The HWCTR was operated for only a short duration, from March 1962 to December 1964 in order to test the viability of test fuel elements and other reactor components for use in a heavy water power reactor. The reactor achieved 13,882 MWd of total power while testing 36 different fuel assemblies. In the course of operation, HWCTR experienced the cladding failures of 10 separate test fuel assemblies. In each case, the cladding was breached with some release of fuel core material into the isolated test loop, causing fission product and actinide contamination in the main coolant loop and the liquid and boiling test loops. Despite the contribution of the contamination from the failed fuel, the primary source of radioactivity in the HWCTR vessel and internals is the activation products in the thermal shields, and to a lesser degree, activation products in the reactor vessel walls and liner. A detailed facility characterization report of the HWCTR facility was completed in 1996. Many of the inputs and assumptions in the 1996 characterization report were derived from the HWCTR decommissioning plan published in 1975. The current paper provides an updated assessment of the radioisotopic characteristics of the HWCTR vessel and internals to support decommissioning activities on the facility.

Vinson, Dennis

2010-06-01T23:59:59.000Z

5

Analysis of removal alternatives for the Heavy Water Components Test Reactor at the Savannah River Site. Revision 1  

SciTech Connect

This engineering study evaluates different alternatives for decontamination and decommissioning of the Heavy Water Components Test Reactor (HWCTR). Cooled and moderated with pressurized heavy water, this uranium-fueled nuclear reactor was designed to test fuel assemblies for heavy water power reactors. It was operated for this purpose from march of 1962 until December of 1964. Four alternatives studied in detail include: (1) dismantlement, in which all radioactive and hazardous contaminants would be removed, the containment dome dismantled and the property restored to a condition similar to its original preconstruction state; (2) partial dismantlement and interim safe storage, where radioactive equipment except for the reactor vessel and steam generators would be removed, along with hazardous materials, and the building sealed with remote monitoring equipment in place to permit limited inspections at five-year intervals; (3) conversion for beneficial reuse, in which most radioactive equipment and hazardous materials would be removed and the containment building converted to another use such as a storage facility for radioactive materials, and (4) entombment, which involves removing hazardous materials, filling the below-ground structure with concrete, removing the containment dome and pouring a concrete cap on the tomb. Also considered was safe storage, but this approach, which has, in effect, been followed for the past 30 years, did not warrant detailed evaluation. The four other alternatives were evaluate, taking into account factors such as potential effects on the environment, risks, effectiveness, ease of implementation and cost. The preferred alternative was determined to be dismantlement. This approach is recommended because it ranks highest in the comparative analysis, would serve as the best prototype for the site reactor decommissioning program and would be most compatible with site property reuse plans for the future.

Owen, M.B.

1997-04-01T23:59:59.000Z

6

Heavy metals hazardous components of Eaf dust  

Science Conference Proceedings (OSTI)

Electric arc furnace (EAF) dust is a waste generated in the EAF during the steel production process. Among different wastes, EAF dust represents one of the most hazardous, since it contains heavy metals such as Zn, Fe, Cr, Cd and Pb. The goal of the ... Keywords: electric arc furnace (EAF), furnace additives, hazard components, heavy metals, scrap composition, x-ray fluorescence spectroscopy

Cristiana-Zizi Rizescu; Zorica Bacinschi; Elena Valentina Stoian; Aurora Poinescu; Dan Nicolae Ungureanu

2011-02-01T23:59:59.000Z

7

Water issues associated with heavy oil production.  

Science Conference Proceedings (OSTI)

Crude oil occurs in many different forms throughout the world. An important characteristic of crude oil that affects the ease with which it can be produced is its density and viscosity. Lighter crude oil typically can be produced more easily and at lower cost than heavier crude oil. Historically, much of the nation's oil supply came from domestic or international light or medium crude oil sources. California's extensive heavy oil production for more than a century is a notable exception. Oil and gas companies are actively looking toward heavier crude oil sources to help meet demands and to take advantage of large heavy oil reserves located in North and South America. Heavy oil includes very viscous oil resources like those found in some fields in California and Venezuela, oil shale, and tar sands (called oil sands in Canada). These are described in more detail in the next chapter. Water is integrally associated with conventional oil production. Produced water is the largest byproduct associated with oil production. The cost of managing large volumes of produced water is an important component of the overall cost of producing oil. Most mature oil fields rely on injected water to maintain formation pressure during production. The processes involved with heavy oil production often require external water supplies for steam generation, washing, and other steps. While some heavy oil processes generate produced water, others generate different types of industrial wastewater. Management and disposition of the wastewater presents challenges and costs for the operators. This report describes water requirements relating to heavy oil production and potential sources for that water. The report also describes how water is used and the resulting water quality impacts associated with heavy oil production.

Veil, J. A.; Quinn, J. J.; Environmental Science Division

2008-11-28T23:59:59.000Z

8

HEAVY WATER MODERATED NEUTRONIC REACTOR  

DOE Patents (OSTI)

A nuclear reactor of the type which utilizes uranium fuel elements and a liquid coolant is described. The fuel elements are in the form of elongated tubes and are disposed within outer tubes extending through a tank containing heavy water, which acts as a moderator. The ends of the fuel tubes are connected by inlet and discharge headers, and liquid bismuth is circulated between the headers and through the fuel tubes for cooling. Helium is circulated through the annular space between the outer tubes in the tank and the fuel tubes to cool the water moderator to prevent boiling. The fuel tubes are covered with a steel lining, and suitable control means, heat exchange means, and pumping means for the coolants are provided to complete the reactor assembly.

Szilard, L.

1958-04-29T23:59:59.000Z

9

Heavy-ion Accelerators for Testing Microelectronic Components at LBNL |  

Office of Science (SC) Website

Heavy-ion Accelerators for Testing Heavy-ion Accelerators for Testing Microelectronic Components at LBNL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Heavy-ion Accelerators for Testing Microelectronic Components at LBNL Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Use of heavy-ion accelerators for testing microelectronic components for

10

An Early History of Heavy Water  

E-Print Network (OSTI)

Since 1945 Canada has had a nuclear power industry based on reactor design which uses natural uranium and heavy water. The tortuous and improbable sequence of events which led to this situation is examined. 1 1

Chris Waltham

1998-01-01T23:59:59.000Z

11

Magnetic Process For Removing Heavy Metals From Water Employing Magnetites  

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

Magnetic Process For Removing Heavy Metals From Water Employing Magnetic Process For Removing Heavy Metals From Water Employing Magnetites Magnetic Process For Removing Heavy Metals From Water Employing Magnetites A process for removing heavy metals from water is provided. The process includes the steps of introducing magnetite to a quantity of water containing heavy metal. Available for thumbnail of Feynman Center (505) 665-9090 Email Magnetic Process For Removing Heavy Metals From Water Employing Magnetites A process for removing heavy metals from water is provided. The process includes the steps of introducing magnetite to a quantity of water containing heavy metal. The magnetite is mixed with the water such that at least a portion of, and preferably the majority of, the heavy metal in the water is bound to the magnetite. Once this occurs the magnetite and

12

HEAVY WATER PRODUCTION: A REVIEW OF PROCESSES.  

SciTech Connect

Methods of heavy water production are examined in detail. Processes based on chemical exchange have the greatest potential for further development but distillation, electrolytic and chromatographic methods are also discussed. In the immediate future most of the world output of heavy water will be produced by hydrogen sulphide/water exchange (the GS process) but there is limited scope for further reduction in GS production costs. Recent advances in process development make the ammonia/hydrogen route an attractive alternative since the enrichment obtainable in each stage is greater while the energy consumption is less. A variation of the ammonia/hydrogen scheme involving the use of amines as additives to, or substitutes for ammonia also appears promising. The greatest obstacle to the development of either the ammonia/hydrogen or amine/hydrogen schemes on a large scale is the limitation on the supply of hydrogen. Ammonia synthesis gas is currently the most plentiful supply available but 1500 tonnes/day of ammonia capacity is needed for each 100 tonnes of heavy water produced annually. Unlimited production could be achieved using an equilibration stage in which hydrogen depleted in deuterium is exchanged with water at high temperature. The economics of this scheme depend on the development of a satisfactory catalyst for water/hydrogen equilibration. Distillation of water, methane and hydrogen have been proposed as econmic routes to heavy water production but design studies and experimental data would need to be clarified if optimistic forecasts are to be substantiated. Processes based on chromatography or selective adsorption have received scant attention in the past. Many problems would need to be overcome before such processes could be adapted to large scale production of heavy water, but in view of recent advances in plant scale chromatography, they should be re-examined. (auth)

Levins, D.M.

1970-09-15T23:59:59.000Z

13

Abstract: Isochoric Heat Capacity of Light and Heavy Water at ...  

Science Conference Proceedings (OSTI)

Isochoric Heat Capacity of Light and Heavy Water at Subcritical and Supercritical Conditions. IM Abdulagatov, JW Magee ...

14

HOW LINDE MAKES HEAVY WATER FROM HYDROGEN  

SciTech Connect

A heavy water plant to be operated in conjunction with an ammonium nitrate fertilizer plant is described. Initial electrolytic deuterium enrichment of hydrogen takes place in a three-stage water electrolysis plant. A part of the hydrogen produced for the ammonia synthesis plant is run through the hydrogen distillation plant, the deuterium drained off, and the hydrogen returned. Natural water is used to scrub deuterium from electrolytic hydrogen before feeding to the cells. Contaminants such as water, carbon dioxide, and nitrogen are frozen out, and the purified enriched hydrogen is fractionated following an interim step which catalyzes concentrated HD to an equilibrium mixture of D/sub 2/ , HD, and H/sub 2/. Pure oxygen burns the final fractionation product to water containing 99.8% deuterium oxide. (J.R.D.)

1959-02-23T23:59:59.000Z

15

HEAVY WATER MODERATED POWER REACTORS PROGRESS REPORT, SEPTEMBER 1961  

DOE Green Energy (OSTI)

At the end of September l961, construction of the Heavy Water Components Test Reactor was about 90% complete. Thirty-two compacted tubes of crushed, fused uranium oxide in Zircaloy sheaths were fabricated for irradiation tests and destructive evaluation. lrradiation tests of the tubes were started in the Vallecitos Boiling Water Reactor and at Savannah River. The fabrication process for the tubes included steps designed to exclude hydrogenous material from the oxide cores, thereby eliminating the probable cause of sheath failures in previous irradiations. Additional experimental data on heat transfer burnout of tubes in subcooled water at pressures of about 100 to 1000 psi showed that the burnout heat flux is not affected significantiy by pressure in this range. The data were correlated in terms of water velocity and subcooling. (auth)

Hood, R.R. comp.

1961-11-01T23:59:59.000Z

16

HEAVY WATER MODERATED POWER REACTORS. Progress Report for October 1959  

SciTech Connect

Continued progress is reported on the design and construction of the Heavy Water Components Test Reactor; 78% of the firm design and 17% of the construction were complete at the end of October 1959. Approximateiy 15% of the firm design for the isolated coolant loops of the HWCTR was also complete. The results of further fabrication tests and irradiation tests of fuel tubes of natural uranium metal are reported. One of the metal tubes failed under irradiation, while other irradiations of metal fuels progressed satisfactorily. (auth)

Hood, R.R.; Isakoff, L. comps.

1959-11-01T23:59:59.000Z

17

METHOD OF OPERATING A HEAVY WATER MODERATED REACTOR  

DOE Patents (OSTI)

A method of removing fission products from the heavy water used in a slurry type nuclear reactor is described. According to the process the slurry is steam distilled with carbon tetrachloride so that at least a part of the heavy water and carbon tetrachloride are vaporized; the heavy water and carbon tetrachloride are separated; the carbon tetrachloride is returned to the steam distillation column at different points in the column to aid in depositing the slurry particles at the bottom of the column; and the heavy water portion of the condensate is purified. (AEC)

Vernon, H.C.

1962-08-14T23:59:59.000Z

18

RECOVERY OF DEGRADED HEAVY WATER AT THE SAVANNAH RIVER PLANT  

SciTech Connect

Information is presented on purification and reconcentration of heavy water at the Savannah River Plant. Process and equipment descriptions, typical operating costs, procedures for control of health hazards, standard analytical methods, and specifications for receipt of degraded heavy water for recovery at the Savannah River Plant are included. (auth)

Scotten, W.C.

1960-07-01T23:59:59.000Z

19

Geothermal water may be used for heavy crude recovery  

SciTech Connect

A brief article reports a statement from the USSR on the use of 158 -212/sup 0/F geothermal water in order to increase the yield of high paraffin or waxy oil. The article suggests the conclusion that wherever geothermal resources are close to heavy crude fields, geothermal steam might be used for heavy crude production. It notes that geothermal hot water pipelines in Iceland, transport hot water for municipal heating over a distance of 24 miles.

Not Available

1987-03-01T23:59:59.000Z

20

Heavy-ion Accelerators for Testing Microelectronic Components...  

Office of Science (SC) Website

Accelerators for Testing Microelectronic Components at LBNL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications...

Note: This page contains sample records for the topic "heavy water components" 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

Reduced heat flow in light water (H2O) due to heavy water (D2O)  

E-Print Network (OSTI)

The flow of heat, from top to bottom, in a column of light water can be decreased by over 1000% with the addition of heavy water. A column of light water cools from 25 C to 0 C in 11 hours, however, with the addition of heavy water it takes more than 100 hours. There is a concentration dependence where the cooling time increases as the concentration of added (D2O) increases, with a near maximum being reached with as little as 2% of (D2O) added. This phenomenon will not occur if the water is mixed after the heavy water is added.

William R. Gorman; James D. Brownridge

2008-09-04T23:59:59.000Z

22

DEGRADATION EVALUATION OF HEAVY WATER DRUMS AND TANKS  

SciTech Connect

Heavy water with varying chemistries is currently being stored in over 6700 drums in L- and K-areas and in seven tanks in L-, K-, and C-areas. A detailed evaluation of the potential degradation of the drums and tanks, specific to their design and service conditions, has been performed to support the demonstration of their integrity throughout the desired storage period. The 55-gallon drums are of several designs with Type 304 stainless steel as the material of construction. The tanks have capacities ranging from 8000 to 45600 gallons and are made of Type 304 stainless steel. The drums and tanks were designed and fabricated to national regulations, codes and standards per procurement specifications for the Savannah River Site. The drums have had approximately 25 leakage failures over their 50+ years of use with the last drum failure occurring in 2003. The tanks have experienced no leaks to date. The failures in the drums have occurred principally near the bottom weld, which attaches the bottom to the drum sidewall. Failures have occurred by pitting, crevice and stress corrosion cracking and are attributable, in part, to the presence of chloride ions in the heavy water. Probable degradation mechanisms for the continued storage of heavy water were evaluated that could lead to future failures in the drum or tanks. This evaluation will be used to support establishment of an inspection plan which will include susceptible locations, methods, and frequencies for the drums and tanks to avoid future leakage failures.

Mickalonis, J.; Vormelker, P.

2009-07-31T23:59:59.000Z

23

An Assessment Of Atmospheric Water Budget Components Over Tropical Oceans  

Science Conference Proceedings (OSTI)

Balancing global moisture budgets is a difficult task that is even more challenging at regional scales. Atmospheric water budgets components are investigated within five tropical (15°S, 15°N) ocean regions, including the Indian Ocean, three ...

Paula J. Brown; Christian D. Kummerow

24

PRODUCTION OF HEAVY WATER BY THE ELECTROLYTIC METHOD  

SciTech Connect

Two cell designs were tried for the production of high concentration heavy water. Iron was used as an electrode in both designs. The rectangular cell measured 38 cm x 54 cm x 24 cm and the cylindrical cell was 42 cm tall and 11 cm in diameter. The over-all current used was 150 amperes during the day and 75 amperes during the night (the current density on the electrodes was not given). The explosive hydrogen and oxygen mixture was passed through copper oxide kept at the optimum temperature for catalyzing the recombination of the gases into water. After six months of operation 20 cc each of 97% and 98% D/sub 2/O were obtained; the electrolytic separation coefficient was, throughout, approximately 5. (TTT)

Tai, Y.; Hsu, Y.

1960-01-01T23:59:59.000Z

25

Method and Apparatus for separation of heavy and tritiated water  

DOE Patents (OSTI)

An object of the present invention is to provide a method for separating and recovering hydrogen isotopes that avoids the disadvantages of the prior art, is more simple, and allows for continuous hydrogen isotope separation and recovery. The disclosed invention does not require the use of isotope exchange reaction catalysts and/or hydrogen sulfide gas. The present invention achieves the advantages of the thermal diffusion and the chemical exchange processes. The disclosed invention provides a method for separating and recovering hydrogen isotopes from a fluid containing the hydrogen isotopes by providing counter-current cold and hot streams of the fluid containing the hydrogen isotopes separated by a proton exchange membrane made of thermally insulating and chemically transparent material that allows exchange of heavy and light hydrogen isotopes there through. The heavier isotopes migrate to the cold stream producing a deuterium and tritium-enriched fluid, while lighter isotopes migrate to the hot stream producing a lighter isotope-enriched fluid. The heavy and light isotopes are withdrawn from the cold and hot streams respectively. According to the present invention, the fluid is water or hydrogen gas, and the desired hydrogen isotope species are deuterium and/or tritium. Further, according to the present invention, the streams of said high and low temperature fluids are interconnected at their respective top and bottom ends forming a continuous loop, and a feed stream is provided at an intermediate portion of either hot or cold stream to feed the process.

Lee, Myung, W.

2000-02-28T23:59:59.000Z

26

Tritium separation from light and heavy water by bipolar electrolysis  

DOE Green Energy (OSTI)

Use of bipolar electrolysis with countercurrent electrolyte flow to separate hydrogen isotopes was investigated for the removal of tritium from light water effluents or from heavy water moderator. Deuterium-tritium and protium-tritium separation factors occurring on a Pd-25% Ag bipolar electrode were measured to be 2.05 to 2.16 and 11.6 to 12.4 respectively, at current densities between 0.21 and 0.50 A cm/sup -2/, and at 35 to 90/sup 0/C. Current densities up to 0.3 A cm/sup -2/ have been achieved in continuous operation, at 80 to 90/sup 0/C, without significant gas formation on the bipolar electrodes. From the measured overvoltage at the bipolar electrodes and the electrolyte conductivity the power consumption per stage was calculated to be 3.0 kwh/kg H/sub 2/O at 0.2 A cm/sup -2/ and 5.0 kwh/kg H/sub 2/O at 0.5 A cm/sup -2/ current density, compared to 6.4 and 8.0 kwh/kg H/sub 2/O for normal electrolysis. A mathematical model derived for hydrogen isotope separation by bipolar electrolysis, i.e., for a square cascade, accurately describes the results for protium-tritium separation in two laboratory scale, multistage experiments with countercurrent electrolyte flow; the measured tiritum concentration gradient through the cascade agreed with the calculated values.

Ramey, D.W.; Petek, M.; Taylor, R.D.; Kobisk, E.H.; Ramey, J.; Sampson, C.A.

1979-10-01T23:59:59.000Z

27

Accident management for indian pressurized heavy water reactors  

Science Conference Proceedings (OSTI)

Indian nuclear power program as of now is mainly based on Pressurized Heavy Water Reactors (PHWRs). Operating Procedures for normal power operation and Emergency Operating Procedures for operational transients and accidents within design basis exist for all Indian PHWRs. In addition, on-site and off-site emergency response procedures are also available for these NPPs. The guidelines needed for severe accidents mitigation are now formally being documented for Indian PHWRs. Also, in line with International trend of having symptom based emergency handling, the work is in advanced stage for preparation of symptom-based emergency operating procedures. Following a plant upset condition; a number of alarms distributed in different information systems appear in the control room to aid operator to identify the nature of the event. After identifying the event, appropriate intervention in the form of event based emergency operating procedure is put into use by the operating staff. However, if the initiating event cannot be unambiguously identified or after the initial event some other failures take place, then the selected event based emergency operating procedure will not be optimal. In such a case, reactor safety is ensured by monitoring safety functions (depicted by selected plant parameters grouped together) throughout the event handling so that the barriers to radioactivity release namely, fuel and fuel cladding, primary heat transport system integrity and containment remain intact. Simultaneous monitoring of all these safety functions is proposed through status trees and this concept will be implemented through a computer-based system. For beyond design basis accidents, event sequences are identified which may lead to severe core damage. As part of this project, severe accident mitigation guidelines are being finalized for the selected event sequences. The paper brings out the details of work being carried out for Indian PHWRs for symptom based event handling and severe accident management. (authors)

Hajela, S.; Grover, R.; Ghadge, S.G.; Bajaj, S.S. [Directorate of Safety, Nuclear Power Corporation of India Limited Nabhikiya Urja Bhawan, Anushakti Nagar, Mumbai-400 094 (India)

2006-07-01T23:59:59.000Z

28

Reduced heat flow in light water (H2O) due to heavy water (D2O) William R. Gormana)  

E-Print Network (OSTI)

energy in bulk water, producing a major impact on energy conservation.6 Heavy water was added to light, if it is produced, will be observed only as the water cools through 4°C. Fig. 2S. Here we show a graph (a) of the temperature gradient produced in the center of the bottle when it is filled with regular water with no added D

Suzuki, Masatsugu

29

PRODUCTION OF HEAVY WATER SAVANNAH RIVER AND DANA PLANTS. Technical Manual  

SciTech Connect

A summary is presented of the basic technical iniormation that pertains to processes that are used at the Dana and Savannah River Plants for the production of heavy water. The manual is intended primarily for plant operating and technical personnel and was prepared to supplement and provide technical support for detailed operating procedures. Introductory sections contain some background information on the history, uses, available processes, and analytical procedures for heavy water. They also include a general comparison of the design and laserformance of the two plants and an analysis of their differences. The technology of the heavy water separation processes used, namely hydrogen sulfide exchange, distillation of water, and electrolysis is discussed in detail. The manufacture and storage of hydrogen sulfide gas and the process water treatment facilities are also discussed. (auth)

Bebbington, W.P.; Thayer, V.R. eds.; Proctor, J.F. comp.

1959-07-01T23:59:59.000Z

30

Accounting strategy of tritium inventory in the heavy water detritiation pilot plant from ICIT Rm. Valcea  

Science Conference Proceedings (OSTI)

In this paper we present a methodology for determination of tritium inventory in a tritium removal facility. The method proposed is based on the developing of computing models for accountancy of the mobile tritium inventory in the separation processes, of the stored tritium and of the trapped tritium inventory in the structure of the process system components. The configuration of the detritiation process is a combination of isotope catalytic exchange between water and hydrogen (LPCE) and the cryogenic distillation of hydrogen isotopes (CD). The computing model for tritium inventory in the LPCE process and the CD process will be developed basing on mass transfer coefficients in catalytic isotope exchange reactions and in dual-phase system (liquid-vapour) of hydrogen isotopes distillation process. Accounting of tritium inventory stored in metallic hydride will be based on in-bed calorimetry. Estimation of the trapped tritium inventory can be made by subtraction of the mobile and stored tritium inventories from the global tritium inventory of the plant area. Determinations of the global tritium inventory of the plant area will be made on a regular basis by measuring any tritium quantity entering or leaving the plant area. This methodology is intended to be applied to the Heavy Water Detritiation Pilot Plant from ICIT Rm. Valcea (Romania) and to the Cernavoda Tritium Removal Facility (which will be built in the next 5-7 years). (authors)

Bidica, N.; Stefanescu, I. [Inst. of Cryogenics and Isotopes Technologies, Uzinei Str. No. 4, Rm. Valcea (Romania); Cristescu, I. [TLK, Forschungszentrum Karlsruhe, Postfach 3640, D76021 Karlsruhe (Germany); Bornea, A.; Zamfirache, M.; Lazar, A.; Vasut, F.; Pearsica, C.; Stefan, I. [Inst. of Cryogenics and Isotopes Technologies, Uzinei Str. No. 4, Rm. Valcea (Romania); Prisecaru, I.; Sindilar, G. [Univ. Politehnica of Bucharest, Splaiul Independentei 313, Bucharest (Romania)

2008-07-15T23:59:59.000Z

31

Removal of radioactive materials and heavy metals from water using magnetic resin  

DOE Patents (OSTI)

Magnetic polymer resins capable of efficient removal of actinides and heavy metals from contaminated water are disclosed together with methods for making, using, and regenerating them. The resins comprise polyamine-epichlorohydrin resin beads with ferrites attached to the surfaces of the beads. Markedly improved water decontamination is demonstrated using these magnetic polymer resins of the invention in the presence of a magnetic field, as compared with water decontamination methods employing ordinary ion exchange resins or ferrites taken separately.

Kochen, Robert L. (Boulder, CO); Navratil, James D. (Simi Valley, CA)

1997-01-21T23:59:59.000Z

32

Magnetic Process For Removing Heavy Metals From Water Employing...  

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

is achieved by flowing the water through a solid magnetized matrix, such as steel wool, such that the magnetite magnetically binds to the solid matrix. The magnetized matrix...

33

Removal of heavy metal ions from oil shale beneficiation process water by ferrite process  

SciTech Connect

The ferrite process is an established technique for removing heavy metals from waste water. Because the process water resulting from oil shale beneficiation falls into the category of industrial waste water, it is anticipated that this process may turn out to be a potential viable treatment for oil shale beneficiation process water containing many heave metal ions. The process is chemoremedial because not only effluent water comply with quality standards, but harmful heavy metals are converted into a valuable, chemically stable by-product known as ferrite. These spinel ferrites have magnetic properties, and therefore can be use in applications such as magnetic marker, ferrofluid, microwave absorbing and scavenging material. Experimental results from this process are presented along with results of treatment technique such as sulfide precipitation.

Mehta, R.K.; Zhang, L.; Lamont, W.E.; Schultz, C.W. (Alabama Univ., University, AL (United States). Mineral Resources Inst.)

1991-01-01T23:59:59.000Z

34

Removal of heavy metal ions from oil shale beneficiation process water by ferrite process  

SciTech Connect

The ferrite process is an established technique for removing heavy metals from waste water. Because the process water resulting from oil shale beneficiation falls into the category of industrial waste water, it is anticipated that this process may turn out to be a potential viable treatment for oil shale beneficiation process water containing many heave metal ions. The process is chemoremedial because not only effluent water comply with quality standards, but harmful heavy metals are converted into a valuable, chemically stable by-product known as ferrite. These spinel ferrites have magnetic properties, and therefore can be use in applications such as magnetic marker, ferrofluid, microwave absorbing and scavenging material. Experimental results from this process are presented along with results of treatment technique such as sulfide precipitation.

Mehta, R.K.; Zhang, L.; Lamont, W.E.; Schultz, C.W. [Alabama Univ., University, AL (United States). Mineral Resources Inst.

1991-12-31T23:59:59.000Z

35

The Development of Simulation Model for D2O Supply System in Heavy Water Nuclear Power Plant  

Science Conference Proceedings (OSTI)

The main purpose of this research is improvement of performance in control system for heavy water supply system of nuclear fuel change machine. Before started design of control system, the model of target system is needed because it is hard to test and ... Keywords: simulation, nuclear, heavy-water, D2O, MATLAB

Sung-Won Choi; Seong-Geun Kwak; Ji-Hyoung Ryu; Kil-To Chong; Chang-Goo Lee

2012-05-01T23:59:59.000Z

36

NREL: Water Power Research - Device and Component Testing  

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

Testing NREL houses the nation's premier laboratory facilities for testing offshore wind and water power devices and maintains a staff of offshore-trained test engineers and...

37

Method for heavy-water extraction from non-electrolytic hydrogen streams using a combined electrolysis and catalytic exchange system  

SciTech Connect

A method is disclosed for heavy-water extraction from nonelectrolytic hydrogen streams using a modified combined electrolysis and catalytic exchange-heavy water process (Cecehwp). The method comprises contacting feed water in a catalyst column with hydrogen gas originating partly from such nonelectrolytic hydrogen stream and partly from an electrolytic hydrogen stream so as to enrich the feed water with deuterium extracted from both the non-electrolytic and electrolytic hydrogen gas, and passing the deuterium enriched water to an electrolyzer wherein the electrolytic hydrogen gas is generated and then fed through the catalyst column.

Butler, J.P.; Hammerli, M.; Leroy, R.L.

1980-09-30T23:59:59.000Z

38

Study and program plan for improved heavy duty gas turbine engine ceramic component development  

DOE Green Energy (OSTI)

A five-year program plan was generated from the study activities with the objectives of demonstrating a fuel economy of 213 mg/W . h (0.35 lb/hp-hr) brake specific fuel consumption by 1981 through use of ceramic materials, with conformance to current and projected Federal noise and emission standards, and to demonstrate a commercially viable engine. Study results show that increased turbine inlet and regenerator inlet temperatures, through the use of ceramic materials, contribute the greatest amount to achieving fuel economy goals. Further, improved component efficiencies (for the compressor, gasifier turbine, power turbine, and regenerator disks show significant additional gains in fuel economy. Fuel saved in a 500,000-mile engine life, risk levels involved in development, and engine-related life cycle costs for fleets (100 units) of trucks and buses were used as criteria to select work goals for the planned program.

Helms, H.E.

1977-05-01T23:59:59.000Z

39

Metal-fueled HWR (heavy water reactors) severe accident issues: Differences and similarities to commercial LWRs (light water reactors)  

DOE Green Energy (OSTI)

Differences and similarities in severe accident progression and phenomena between commercial Light Water Reactors (LWR) and metal-fueled isotopic production Heavy Water Reactors (HWR) are described. It is very important to distinguish between accident progression in the two systems because each reactor type behaves in a unique manner to a fuel melting accident. Some of the lessons learned as a result of the extensive commercial severe accident research are not applicable to metal-fueled heavy water reactors. A direct application of severe accident phenomena developed from oxide-fueled LWRs to metal-fueled HWRs may lead to large errors or substantial uncertainties. In general, the application of severe accident LWR concepts to HWRs should be done with the intent to define the relevant issues, define differences, and determine areas of overlap. This paper describes the relevant differences between LWR and metal-fueled HWR severe accident phenomena. Also included in the paper is a description of the phenomena that govern the source term in HWRs, the areas where research is needed to resolve major uncertainties, and areas in which LWR technology can be directly applied with few modifications.

Ellison, P.G.; Hyder, M.L.; Monson, P.R. (Westinghouse Savannah River Co., Aiken, SC (USA)); Coryell, E.W. (EG and G Idaho, Inc., Idaho Falls, ID (USA))

1990-01-01T23:59:59.000Z

40

Experience with non-fuel-bearing components in LWR (light-water reactor) fuel systems  

SciTech Connect

Many non-fuel-bearing components are so closely associated with the spent fuel assemblies that their integrity and behavior must be taken into consideration with the fuel assemblies, when handling spent fuel of planning waste management activities. Presented herein is some of the experience that has been gained over the past two decades from non-fuel-bearing components in light-water reactors (LWRs), both pressurized-water reactors (PWRs) and boiling-water reactors (BWRs). Among the most important of these components are the control rod systems, the absorber and burnable poison rods, and the fuel assembly channels. 15 refs., 5 figs., 2 tabs.

Bailey, W.J.; Berting, F.M.

1990-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Laser-induced synthesis and decay of Tritium under exposure of solid targets in heavy water  

E-Print Network (OSTI)

The processes of laser-assisted synthesis of Tritium nuclei and their laser-induced decay in cold plasma in the vicinity of solid targets (Au, Ti, Se, etc.) immersed into heavy water are experimentally realized at peak laser intensity of 10E10-10E13 Watts per square centimeter. Initial stages of Tritium synthesis and their laser-induced beta-decay are interpreted on the basis of non-elastic interaction of plasma electrons having kinetic energy of 5-10 eV with nuclei of Deuterium and Tritium, respectively.

E. V. Barmina; P. G. Kuzmin; S. F. Timashev; G. A. Shafeev

2013-06-03T23:59:59.000Z

42

Separation of heavy water by vapor-phase thermal diffusion coupled with distillation and condensation  

Science Conference Proceedings (OSTI)

A study on the enrichment of heavy water in a vapor-phase thermal-diffusion column has been conducted. With the combination of the effects of distillation, vapor-phase thermal diffusion, and partial condensation, considerable improvement in the degree of enrichment has been achieved in a vapor-phase column rather than in a liquid-phase column. It was also found that even the part of enrichment contributed only by vapor-phase thermal-diffusion effect is much higher than that obtained by liquid-phase thermal diffusion.

Yeh, H.M. [Tamkang Univ., Taiwan (China); Chang, S.M. [Cheng Kung Univ., Taiwan (China)

1994-08-01T23:59:59.000Z

43

Interannual Variability of Summer Water Balance Components in Three Major River Basins of Northern Eurasia  

Science Conference Proceedings (OSTI)

This study investigated water balance components in the three major river basins of Siberia (the Lena, Yenisey, and Ob) based on the National Centers for Environmental Prediction (NCEP)–Department of Energy (DOE) Atmospheric Model Intercomparison ...

Yoshiki Fukutomi; Hiromichi Igarashi; Kooiti Masuda; Tetsuzo Yasunari

2003-04-01T23:59:59.000Z

44

Estimating the Vertical Component of Water Velocity from Measurements Collected with a Free-fall Vehicle  

Science Conference Proceedings (OSTI)

Estimated of the vertical component of water velocity are made with measurements of the pressure-change rate and rotation rate recorded by the free-fall vehicle “Cartesian diver” (CD). Using buoyancy control, this device moves alternately up and ...

David C. Jacobs; Charles S. Cox

1992-02-01T23:59:59.000Z

45

NARR’s Atmospheric Water Cycle Components. Part I: 20-Year Mean and Annual Interactions  

Science Conference Proceedings (OSTI)

The North American Regional Reanalysis (NARR) atmospheric water cycle is examined from 1980 to 1999 using a budget approach, with a particular emphasis on annual component interactions and the role of hourly precipitation assimilation. NARR’s ...

Alex C. Ruane

2010-12-01T23:59:59.000Z

46

Criticality Safety of Low-Enriched Uranium and High-Enriched Uranium Fuel Elements in Heavy Water Lattices  

Science Conference Proceedings (OSTI)

The RB reactor was designed as a natural-uranium, heavy water, nonreflected critical assembly in the Vinca Institute of Nuclear Sciences, Belgrade, Yugoslavia, in 1958. From 1962 until 2002, numerous critical experiments were carried out with low-enriched uranium and high-enriched uranium fuel elements of tubular shape, known as the Russian TVR-S fuel assembly type, placed in various heavy water square lattices within the RB cylindrical aluminum tank. Some of these well-documented experiments were selected, described, evaluated, and accepted for inclusion in the 'International Handbook of Evaluated Criticality Safety Benchmark Experiments', contributing to the preservation of a rather small number of heavy water benchmark critical experiments.

Pesic, Milan P

2003-10-15T23:59:59.000Z

47

Analytical Study of High Concentration PCB Paint at the Heavy Water Components Test Reactor  

SciTech Connect

This report provides results of an analytical study of high concentration PCB paint in a shutdown nuclear test reactor located at the US Department of Energy's Savannah River Site (SRS). The study was designed to obtain data relevant for an evaluation of potential hazards associated with the use of and exposure to such paints.

Lowry, N.J.

1998-10-21T23:59:59.000Z

48

The development of code inservice inspection (ISI) requirements for Low Temperature Heavy Water Reactors (LTHWR)  

SciTech Connect

DOE Savannah River Field office requested that the American Society of Mechanical Engineers (ASME) develop rules for inservice inspection (ISI) of Savannah River Site (SRS) Low Temperature Heavy Water Reactors (LTHWR's) in January 1990. The request is part of the SRS Reactor Safety Improvement Program (RSIP). RSIP will implement an ASME B PV Code Section XI based ISI program after restart of K Reactor. The establishment of a Code based ISI program at SRS will affect a transition from a standing log which scheduled inspections to a program structured to commercial reactor standards. The SRS standing log for periodic inspection of equipment was initiated in the early 1970's, approximately the same time Section XI ISI programs were initiated at commercial reactors. The information contained in this article was developed during the course of work under Contract Number AC09-89SR18035 with the US Department of Energy.

Cowfer, C.D.

1992-01-01T23:59:59.000Z

49

Conservative numerical simulation of multi-component transport in two-dimensional unsteady shallow water flow  

Science Conference Proceedings (OSTI)

An explicit finite volume model to simulate two-dimensional shallow water flow with multi-component transport is presented. The governing system of coupled conservation laws demands numerical techniques to avoid unrealistic values of the transported ... Keywords: ?-? model, 35L65, 65M06, 65M12, 76M12, 76M20, Coupled system, Multi-component transport, Reactive source terms, Shallow flow, Solute constraints, Turbulence, Variable domain, Well-balanced approach

J. Murillo; P. García-Navarro; J. Burguete

2009-08-01T23:59:59.000Z

50

Options for Shielding Tokamak Cooling Water Electrical Components against High Magnetic Fields  

SciTech Connect

The Tokamak Cooling Water System (TCWS) Instrumentation and Control (I&C) components of ITER will be located in areas of relatively high magnetic fields. Previous tests on electrical and I&C components have indicated that shielding will be required to protect these components from such magnetic fields. To accomplish this, studies were performed by AREVA Federal Services (AFS) in support of the TCWS Design project with the intent of identifying an optimal solution for shielding I&C components. This report presents a summary of these studies and presents design options for providing magnetic shielding to ITER TCWS I&C components and electrical equipment that are susceptible to the magnetic fields present.

Korsah, Kofi [ORNL; Michael, Smith [AREVA Federal Services LLC; Kim, Seokho H [ORNL; Charles, Neumeyer [Princeton Plasma Physics Laboratory (PPPL)

2011-01-01T23:59:59.000Z

51

A new two-component system modelling shallow-water waves  

E-Print Network (OSTI)

For propagation of surface shallow-water waves on irrotational flows, we derive a new two-component system. The system is obtained by a variational approach in the Lagrangian formalism. The system has a non-canonical Hamiltonian formulation. We also find its exact solitary-wave solutions.

Delia Ionescu-Kruse

2013-05-22T23:59:59.000Z

52

HEAVY-WATER-MODERATED POWER REACTORS ENGINEERING AND ECONOMIC EVALUATIONS. VOLUME I. SUMMARY REPORT  

SciTech Connect

Capital investments and the cost of power were estimated for 21 heavy- water-moderated, natural-uraniumfueled power-reactor plants, ranging in capacity from 100 to 460 Mw(e). Comparisons were made of hot- and coldmoderator reactors and of the relative merits of pressuretube and pressure-vessel designs. Reactors cooled with liquid D/sub 2/O, boiling D/sub 2/O, /sub 2/O steam, and helium were evalunted. A cold-moderator pressure-tube reactor cooled with boiling D/sub 2/O shows the most economic promise of the D/sub 2/Omoderated reactor systems studied to date. Reactors of this type have sufficient reactivity to permit satisfactory fuel exposures, but the development of additional technology is a prerequisite for optimum designs. At capacities of 300 and 400 Mw(e), the estimated power costs from the current designs of boiling-D/sub 2/O pressure-tabe reactor plants are 11.3 and 9.8 mills/kwh, respectively. From liquid-D/sub 2/-cooled concepts of comparable capacities the indicated power costs are 7 to 20% higher. With an active development program, a power cost of 8.0 to 8.5 mills/kwh may be attained in a 300 Mw(e) boiling-D/sub 2/O reactor plant within the next decade. (auth)

1960-06-01T23:59:59.000Z

53

Enrichment of heavy water in flat-plate thermal diffusion columns of the Frazier scheme inclined for improved performance  

SciTech Connect

A separation theory for the enrichment of heavy water in flat-plate thermal diffusion columns of the Frazier scheme inclined for improved performance has been developed. Equations for the best angle of inclination and maximum separation have been derived. Considerable improvement in separation is obtainable if the columns are inclined at the best angle, so that the convective strength can be properly reduced and controlled, resulting in suppression of the undesirable remixing effect while still preserving the desirable cascading effect.

Ho-Ming Yeh [Tamkang Univ., Taiwan (China)

1995-04-01T23:59:59.000Z

54

Dynamics of the fast component of nano-confined water under electric field  

Science Conference Proceedings (OSTI)

We report the diffusion of water molecules confined in the pores of folded silica materials (FSM-12 with average pore diameter of $\\sim$ 16 \\AA), measured by means of quasielastic neutron scattering using the cold neutron chopper spectrometer (CNCS). The goal is to investigate the effect of electric field on the previously observed fast component of nano-confined water. The measurements were taken at temperatures between 220 K and 245 K, and at two electric field values, 0 kV/mm and 2 kV/mm. Similar to the recently observed electric field induced enhancement of the slow translational motion of confined water, there is a an equally important impact of the field on the faster diffusion.

Omar Diallo, Souleymane [ORNL; Mamontov, Eugene [ORNL; Podlesnyak, Andrey A [ORNL; Ehlers, Georg [ORNL; Wada, Nobuo [Nagoya University, Japan; Inagaki, S [Toyota Central Research and Development Labs. Inc.; Fukushima, Y [Toyota Central Research and Development Labs. Inc.

2013-01-01T23:59:59.000Z

55

Dynamics of the fast component of nano-confined water under electric field  

E-Print Network (OSTI)

We report the diffusion of water molecules confined in the pores of folded silica materials (FSM-12 with average pore diameter of $\\sim$ 16 \\AA), measured by means of quasielastic neutron scattering using the cold neutron chopper spectrometer (CNCS). The goal is to investigate the effect of electric field on the previously observed fast component of nano-confined water. The measurements were taken at temperatures between 220 K and 245 K, and at two electric field values, 0 kV/mm and 2 kV/mm. Similar to the recently observed electric field induced enhancement of the slow translational motion of confined water, there is a an equally important impact of the field on the faster diffusion.

S. O. Diallo; E. Mamontov; A. Podlesnyak; G. Ehlers; N. Wada; S. Inagaki; Y. Fukushima

2013-06-27T23:59:59.000Z

56

Feasibility of Using Measurements of Internal Components of Tankless Water Heaters for Field Monitoring of Energy and Water Use  

E-Print Network (OSTI)

Products: Test Procedures for Water Heaters; Final Rule,"Testing of Tankless Gas Water Heater Performance," DavisInc. , "T-K2 Instantaneous Water Heater Installation Manual

Lutz, Jim

2008-01-01T23:59:59.000Z

57

Cooling Towers: Understanding Key Components of Cooling Towers and How to Improve Water Efficiency  

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

Paul Johnston-Knight Introduction Federal laws and regulations require Federal agencies to reduce water use and improve water efficiency. Namely, Executive Order 13514 Federal Leadership in Environmental, Energy, and Economic Performance, requires an annual two percent reduction of water use intensity (water use per square foot of building space) for agency potable water consumption as well as a two percent reduction of water use for industrial, landscaping, and agricultural applica- tions. Cooling towers can be a significant

58

HEAVY-WATER-MODERATED POWER REACTORS ENGINEERING AND ECONOMIC EVALUATIONS. VOLUME II. ENGINEERING STUDIES AND TECHNICAL DATA  

SciTech Connect

The results of preliminary design and evaluation studies of various concepts of a power reactor that is moderated by heavy water and fueled with natural uranium are presented. Twenty-nine conceptal designs were developed for reactors ranging in capacity from 100 Mwe to 460 Mwe. Resigns were prepared for hot- and cold-moderator reac tors of the pressure vessel type, with liquid D/sub 2/O, boiling D/sub 2/O, E/sub 2/O steam, and helium as coolants. Also studied were cold-moderator pressure tube reactors cooled with liquid D/sub 2/O and boiling D/sub 2/O. The repont includes the results of engineering studies of the reactor systems, electrical generation facilities, and auxiliary equipment. (auth)

1960-12-01T23:59:59.000Z

59

CIVILIAN POWER REACTOR PROGRAM. PART II. ECONOMIC POTENTIAL AND DEVELOPMENT PROGRAM. HEAVY WATER-MODERATED POWER REACTOR  

SciTech Connect

The reactor design which forms the base for the current economic status of D/sub 2/O-moderated reactors was estimated from developments in several reactor programs. However, since a heavy water-moderated reactor was not operated on natural U fuel at power reactor conditions, considerable improvement from this current status can be foreseen. A summary of improvements is presented concerning the concept which would result solely from operation of succeeding generation plants without a parallel development program, and improvements which would result from the successful completion of the development program as presented. One plant size was used in the evaluation of plant potential, with a 300 Mw/sub e/ nominal rating. The boiling D/sub 2/O-cooled, pressure tube direct cycle plant design was used. The current development program is outlined; this work includes several items leading to the long-range development of the concept. (auth)

Hutton, J.H.; Davis, S.A.; Graves, C.C.; Duffy, J.G. comps.

1960-08-19T23:59:59.000Z

60

CHEMICAL PROCESSING OF PURE AMMONIA AND AMMONIA-WATER ICES INDUCED BY HEAVY IONS  

SciTech Connect

Cosmic rays are possibly the main agents to prevent the freeze-out of molecules onto grain surfaces in cold dense clouds. Ammonia (NH{sub 3}) is one of the most abundant molecules present in dust ice mantles, with a concentration of up to 15% relative to water (H{sub 2}O). FTIR spectroscopy is used to monitor pure NH{sub 3} and NH{sub 3}-H{sub 2}O ice samples as they are irradiated with Ni and Zn ion beams (500-600 MeV) at GANIL/France. New species, such as hydrazine (N{sub 2}H{sub 4}), diazene (N{sub 2}H{sub 2} isomers), molecular hydrogen (H{sub 2}), and nitrogen (N{sub 2}) were identified after irradiation of pure NH{sub 3} ices. Nitrous oxide (N{sub 2}O), nitrogen oxide (NO), nitrogen dioxide (NO{sub 2}), and hydroxylamine (NH{sub 2}OH) are some of the products of the NH{sub 3}-H{sub 2}O ice radiolysis. The spectral band at 6.85 {mu}m was observed after irradiation of both types of ice. Besides the likely contribution of ammonium (NH{sub 4}{sup +}) and amino (NH{sub 2}) radicals, data suggest a small contribution of NH{sub 2}OH to this band profile after high fluences of irradiation of NH{sub 3}-H{sub 2}O ices. The spectral shift of the NH{sub 3} ''umbrella'' mode (9.3 {mu}m) band is parameterized as a function of NH{sub 3}/H{sub 2}O ratio in amorphous ices. Ammonia and water destruction cross-sections are obtained, as well as the rate of NH{sub 3}-H{sub 2}O (1:10) ice compaction, measured by the OH dangling bond destruction cross-section. Ammonia destruction is enhanced in the presence of H{sub 2}O in the ice and a power law relationship between stopping power and NH{sub 3} destruction cross-section is verified. Such results may provide relevant information for the evolution of molecular species in dense molecular clouds.

Bordalo, V.; Da Silveira, E. F. [Departamento de Fisica/Laboratorio do Acelerador Van de Graaff, Pontificia Universidade Catolica do Rio de Janeiro, Rua Marques de S. Vicente 225, 22451-900 Rio de Janeiro, RJ (Brazil); Lv, X. Y.; Domaracka, A.; Rothard, H.; Boduch, P. [Centre de Recherche sur les Ions, les Materiaux et la Photonique (CEA/CNRS/ENSICAEN/Universite de Caen-Basse Normandie), CIMAP-CIRIL-GANIL, Boulevard Henri Becquerel, BP 5133, F-14070 Caen Cedex 05 (France); Seperuelo Duarte, E., E-mail: vbordalo@fis.puc-rio.br [Grupo de Fisica e Astronomia, Instituto Federal do Rio de Janeiro, Rua Lucio Tavares 1045, 26530-060 Nilopolis, RJ (Brazil)

2013-09-10T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

In-situ parameter estimation for solar domestic hot water heating systems components. Final report, June 1995--May 1996  

DOE Green Energy (OSTI)

Three different solar domestic hot water systems are being tested at the Colorado State University Solar Energy Applications Laboratory; an unpressurized drain-back system with a load side heat exchanger, an integral collector storage system, and an ultra low flow natural convection heat exchanger system. The systems are fully instrumented to yield data appropriate for in-depth analyses of performance. The level of detail allows the observation of the performance of the total system and the performance of the individual components. This report evaluates the systems based on in-situ experimental data and compares the performances with simulated performances. The verification of the simulations aids in the rating procedure. The whole system performance measurements are also used to analyze the performance of individual components of a solar hot water system and to develop improved component models. The data are analyzed extensively and the parameters needed to characterize the systems fully are developed. Also resulting from this indepth analysis are suggested design improvements wither to the systems or the system components.

Smith, T.R.

1997-03-01T23:59:59.000Z

62

Estimation of land surface water and energy balance flux components and closure relation using conditional sampling  

E-Print Network (OSTI)

Models of terrestrial water and energy balance include numerical treatment of heat and moisture diffusion in the soil-vegetation-atmosphere continuum. These two diffusion and exchange processes are linked only at a few ...

Farhadi, Leila

2012-01-01T23:59:59.000Z

63

Liquid-Water Uptake and Removal in PEM Fuel-Cell Components  

Science Conference Proceedings (OSTI)

Management of liquid water is critical for optimal fuel-cell operation, especially at low temperatures. It is therefore important to understand the wetting properties and water holdup of the various fuel-cell layers. While the gas-diffusion layer is relatively hydrophobic and exhibits a strong intermediate wettability, the catalyst layer is predominantly hydrophilic. In addition, the water content of the ionomer in the catalyst layer is lower than that of the bulk membrane, and is affected by platinum surfaces. Liquid-water removal occurs through droplets on the surface of the gas-diffusion layer. In order to predict droplet instability and detachment, a force balance is used. While the pressure or drag force on the droplet can be derived, the adhesion or surface-tension force requires measurement using a sliding-angle approach. It is shown that droplets produced by forcing water through the gas-diffusion layer rather than placing them on top of it show much stronger adhesion forces owing to the contact to the subsurface water.

Das, Prodip K.; Gunterman, Haluna P.; Kwong, Anthony; Weber, Adam Z.

2011-09-23T23:59:59.000Z

64

Optimum plate-spacing for the best performance of the enrichment of heavy water in flat-plate thermal-diffusion columns of the Frazier scheme  

SciTech Connect

The effect of plate spacing on the degree of separation and production rate for the enrichment of heavy water in flat-plate thermal diffusion columns of the Frazier scheme with fixed operating expense has been investigated. The equations for estimating optimum plate-space for maximum separation and for maximum production rate have been developed. Considerable improvement in performance is obtainable when thermal diffusion columns with optimum plate-spacing are employed for operation.

Ho-Ming Yeh [Tamkang Univ., Taiwan (China)

1996-11-01T23:59:59.000Z

65

Towards the visualization of water supply system components with GPR images  

Science Conference Proceedings (OSTI)

We propose a methodological tool for examining the layout and revealing the concealed characteristics of urban water supply systems (WSS). For this purpose, we use underground images obtained with ground penetrating radar (GPR) as a method that does ... Keywords: Ground penetrating radar, Images processing and analysis, Pipe location, Signal processing

David Ayala-Cabrera; Manuel Herrera; Idel Montalvo; Rafael PéRez-GarcíA

2011-10-01T23:59:59.000Z

66

Role of crude-oil components in surfactant interaction. [Effect of acids, bases and heavy ends hydrocarbons (alkanes) on the solubilization, optimal salinity and interfacial tension of surfactant systems  

Science Conference Proceedings (OSTI)

Three crude oils from Bell Creek, Bradford, and Delaware-Childers fields were separated into distillates, acids, bases and heavy ends hydrocarbon. The effect of these components on the solubilization, optimal salinity, and bases shifted the optimal salinity significantly; their effects on the solubilization and interfacial tension are smaller. The bases appear to interact with the sulfonates, causing desorption from the interface, phase separation, and higher interfacial tension. The hydrocarbons, as expected have the strongest influence on the properties studied, due to their high concentration. The importance of the chemical nature and molecular weights of these components was also apparent. Even though the product sigma*/sup 2/..gamma.. is not constant, it was found that there is a definite relation between the solubilization (sigma*) and the interfacial tension (..gamma..). This is true even for such complex compounds as acids and bases. 41 references, 6 figures, 14 tables.

Tham, M.K.; Lorenz, P.B.

1983-09-01T23:59:59.000Z

67

Evaluation of AMIP II Global Climate Model Simulations of the Land Surface Water Budget and Its Components over the GEWEX-CEOP Regions  

Science Conference Proceedings (OSTI)

The land surface water balance components simulated by 20 atmospheric global circulation models (AGCMs) participating in phase II of the Atmospheric Model Intercomparison Project (AMIP II) are analyzed globally and over seven Global Energy and ...

P. Irannejad; A. Henderson-Sellers

2007-06-01T23:59:59.000Z

68

Feasibility of underwater welding of highly irradiated in-vessel components of boiling-water reactors: A literature review  

SciTech Connect

In February 1997, the U.S. Nuclear Regulatory Commission (NRC), Office of Nuclear Regulatory Research (RES), initiated a literature review to assess the state of underwater welding technology. In particular, the objective of this literature review was to evaluate the viability of underwater welding in-vessel components of boiling water reactor (BWR) in-vessel components, especially those components fabricated from stainless steels that are subjected to high neutron fluences. This assessment was requested because of the recent increased level of activity in the commercial nuclear industry to address generic issues concerning the reactor vessel and internals, especially those issues related to repair options. This literature review revealed a preponderance of general information about underwater welding technology, as a result of the active research in this field sponsored by the U.S. Navy and offshore oil and gas industry concerns. However, the literature search yielded only a limited amount of information about underwater welding of components in low-fluence areas of BWR in-vessel environments, and no information at all concerning underwater welding experiences in high-fluence environments. Research reported by the staff of the U.S. Department of Energy (DOE) Savannah River Site and researchers from the DOE fusion reactor program proved more fruitful. This research documented relevant experience concerning welding of stainless steel materials in air environments exposed to high neutron fluences. It also addressed problems with welding highly irradiated materials, and primarily attributed those problems to helium-induced cracking in the material. (Helium is produced from the neutron irradiation of boron, an impurity, and nickel.) The researchers found that the amount of helium-induced cracking could be controlled, or even eliminated, by reducing the heat input into the weld and applying a compressive stress perpendicular to the weld path.

Lund, A.L.

1997-11-01T23:59:59.000Z

69

Material Reliability Program Technical Basis Document Concerning Irradiation-Induced Stress Relaxation and Void Swelling in Pressuri zed Water Reactor Vessel Internals Components (MRP-50)  

Science Conference Proceedings (OSTI)

Irradiation-induced swelling and irradiation-enhanced stress relaxation are two potential degradation mechanisms that could affect reactor vessel (RV) core internals components in pressurized water reactors (PWRs). This report describes current knowledge of these two potential degradation mechanisms, available relevant data and known functional relationships, and a qualitative assessment of these two mechanisms' combined and separate effects on PWR internals components.

2001-10-18T23:59:59.000Z

70

Contact angle measurements and wetting behavior of inner surfaces of pipelines exposed to heavy crude oil and water  

E-Print Network (OSTI)

to deliver these oils at low energy consumption. However, the possible accumulation of oil on the pipe walls alternative for the transportation of heavy crude oils. The lubricating effect of the aqueous film leads to reduced equivalent viscosities and, hence, low energy consumption. One of the possible problems associated

Loh, Watson

71

An ecological study examining the correlation of end-stage renal disease and ground water heavy metal content in Texas counties  

E-Print Network (OSTI)

An ecological study was conducted to examine the correlation of end-stage renal disease (ESRD) and the ground water heavy metal level of lead, arsenic, cadmium, mercury and the cumulative level of all four metals in Texas counties. The heavy meal dab was collected from the United States Geologic Survey (USGS) measurement and covered the twenty-one year span 1970- 1990. The ESRD data was gathered from the Texas Department of Health Kidney Program ESRD Registry for the five-year span 1988-1992. This registry included more than 99% of incident ESRD cases over the same time period. The 1990 U.S. Census data was used to estimate county population by age, race and sex. Exposure was defined as residence in a county with ground water measurements that fell in the highest quartile for each metal (mercury 0.297ug/, arsenic 3.216ug/l, lead 4.685ug/l, cadmium 1.423ug/l, cumulative metal level 8.911ug/l). Outcome was defined as an incident case of ESRD between the years 1988-1992 and examined as five-year incidence of ESRD per 10,000 persons. Among 254 Texas counties, 52 had at least 7 years of metal measurements for lead and cadmium, 51 counties had at least 7 years of metal measurements for arsenic and mercury and 50 counties had 7 years of measurements for all four metals. Linear and logistic regression procedures were carried out to examine the relationship between heavy metal ground water levels and incidence of ESRD. None of the metals demonstrated a statistically significant positive relationship with five-year incidence of ESRD per 10,000 persons. Counties with high levels of heavy metals did not indicate an increased odds of having a five-year ESRD incidence per 10,000 persons above the 1988-1992 state average. The percentage of Black or Hispanic persons in a county was a positive predictor of increased five-year incidence of ESRD per 10,000 persons.

Bishop, Scott Alan

1999-01-01T23:59:59.000Z

72

Stack Components  

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

Stack Components Stack Components Nancy L. Garland Energy Efficiency and Renewable Energy Hydrogen, Fuel Cells and Infrastructure Technologies Program Fuel Cell Team FORS 5G-086 (202) 586-5673 nancy.garland@ee.doe.gov Stack Components F u e l P r o c e s s o r Bipolar Plate Cathode + Anode - Electrolyte H+ H+ HYDROGEN OXYGEN Example shown is for acidic electrolytes Bipolar Plate e - e - O 2 O 2 O 2 e - H+ Bipolar Plate Bipolar Plate Cathode + Anode - Electrolyte H+ H+ H+ H+ HYDROGEN OXYGEN Example shown is for acidic electrolytes Bipolar Plate Bipolar Plate e - e - e - e - O 2 O 2 O 2 O 2 O 2 O 2 e - e - H+ H+ Power Stack Component Barriers $10 Other Bipolar Plates Membranes Electrodes $25 $5 $5 Fuel Cell Power Systems $45/kW BARRIERS * Stack material cost/manufacturing * Durability * Electrode performance * Thermal and water management Stack Component Targets

73

Heavy Vehicle Systems  

Science Conference Proceedings (OSTI)

Heavy Vehicle (HV) systems are a necessary component of achieving OHVT goals. Elements are in place for a far-ranging program: short, intermediate, and long-term. Solicitation will bring industrial input and support. Future funding trend is positive, outlook for HV systems is good.

Sid Diamond; Richard Wares; Jules Routbort

2000-04-11T23:59:59.000Z

74

Experimental comparison of hot water/propane injection to steam/propane injection for recovery of heavy oil.  

E-Print Network (OSTI)

??Generating enough heat to convert water into steam is a major expense for projects that inject steam into reservoirs to enhance hydrocarbon recovery. If the… (more)

Nesse, Thomas

2005-01-01T23:59:59.000Z

75

Data-oriented research for bioresource utilization: A case study to investigate water uptake in cellulose using Principal Components  

Science Conference Proceedings (OSTI)

Bioresource utilization represents an important interdisciplinary research that integrates academic and industrial expertise across diverse scientific domains, including physics, chemistry, biology, and engineering. The present paper describes a cyber-infrastructure ... Keywords: Principal component analysis,Laboratories,Loading,Correlation,Data visualization,Materials,Databases,bioethanol,Principal Component Analysis,Scientific workflow,lignocellulose

Roberto M. Cesar, Liu Yi Ling, Carlos Driemeier

2012-10-01T23:59:59.000Z

76

Guidelines for Fabrication and Assembly of Alloy 690 Components in PWR Primary Systems  

Science Conference Proceedings (OSTI)

Although test data and field experience indicate that Alloy 690 is significantly more resistant to primary water stress corrosion cracking (PWSCC) degradation than Alloy 600, laboratory testing has shown that thermo-mechanical processing and surface bulk cold work can introduce vulnerabilities to PWSCC. This document provides guidelines for the fabrication, assembly, and installation of heavy section Alloy 690 parts and components in the primary system of pressurized water reactors (PWRs). The ...

2013-12-02T23:59:59.000Z

77

Heavy Oil Projects  

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

Select Reports from Heavy Oil Projects Project Number Performer Title Heavy Oil Recovery US (NIPERBDM-0225) BDM-Oklahoma, Inc. Feasibility Study of Heavy Oil Recovery in the...

78

FIELD DEMONSTRATION OF A MEMBRANE PROCESS TO RECOVER HEAVY HYDROCARBONS AND TO REMOVE WATER FROM NATURAL GAS  

SciTech Connect

The objective of this project is to design, construct and field demonstrate a membrane system to recover natural gas liquids (NGL) and remove water from raw natural gas. An extended field test to demonstrate system performance under real-world conditions would convince industry users of the efficiency and reliability of the process. The system has been designed and fabricated by Membrane Technology and Research, Inc. (MTR) and will be installed and operated at British Petroleum (BP)-Amoco's Pascagoula, MS plant. The Gas Research Institute will partially support the field demonstration and BP-Amoco will help install the unit and provide onsite operators and utilities. The gas processed by the membrane system will meet pipeline specifications for dewpoint and Btu value and can be delivered without further treatment to the pipeline. Based on data from prior membrane module tests, the process is likely to be significantly less expensive than glycol dehydration followed by propane refrigeration, the principal competitive technology. At the end of this demonstration project the process will be ready for commercialization. The route to commercialization will be developed during this project and may involve collaboration with other companies already servicing the natural gas processing industry.

R. Baker; R. Hofmann; K.A. Lokhandwala

2003-02-14T23:59:59.000Z

79

Field Demonstration of a Membrane Process to Recover Heavy Hydrocarbons and to Remove Water from Natural Gas  

SciTech Connect

The objective of this project is to design, construct and field demonstrate a membrane system to recover natural gas liquids (NGL) and remove water from raw natural gas. An extended field test to demonstrate system performance under real-world conditions would convince industry users of the efficiency and reliability of the process. The system has been designed and fabricated by Membrane Technology and Research, Inc. (MTR) and will be installed and operated at British Petroleum (BP)-Amoco's Pascagoula, MS plant. The Gas Research Institute will partially support the field demonstration and BP-Amoco will help install the unit and provide onsite operators and utilities. The gas processed by the membrane system will meet pipeline specifications for dewpoint and BTU value and can be delivered without further treatment to the pipeline. Based on data from prior membrane module tests, the process is likely to be significantly less expensive than glycol dehydration followed by propane refrigeration, the principal competitive technology. At the end of this demonstration project the process will be ready for commercialization. The route to commercialization will be developed during this project and may involve collaboration with other companies already servicing the natural gas processing industry.

R. Baker; T. Hofmann; K. A. Lokhandwala

2004-09-29T23:59:59.000Z

80

Field Demonstration of a Membrane Process to Recover Heavy Hydrocarbons and to Remove Water from Natural Gas  

SciTech Connect

The objective of this project is to design, construct and field demonstrate a membrane system to recover natural gas liquids (NGL) and remove water from raw natural gas. An extended field test to demonstrate system performance under real-world high-pressure conditions is being conducted to convince industry users of the efficiency and reliability of the process. The system was designed and fabricated by Membrane Technology and Research, Inc. (MTR) and installed and operated at BP Amoco's Pascagoula, MS plant. The Gas Research Institute is partially supporting the field demonstration and BP-Amoco helped install the unit and provided onsite operators and utilities. The gas processed by the membrane system meets pipeline specifications for dewpoint and BTU value and can be delivered without further treatment to the pipeline. Based on data from prior membrane module tests, the process is likely to be significantly less expensive than glycol dehydration followed by propane refrigeration, the principal competitive technology. During the course of this project, MTR has sold 11 commercial units related to the field test technology, and by the end of this demonstration project the process will be ready for broader commercialization. A route to commercialization has been developed during this project and involves collaboration with other companies already servicing the natural gas processing industry.

R. Baker; T. Hofmann; K. A. Lokhandwala

2005-09-29T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Field Demonstration of a Membrane Process to Recover Heavy Hydrocarbons and to Remove Water from Natural Gas  

SciTech Connect

The objective of this project was to design, construct and field demonstrate a membrane system to recover natural gas liquids (NGL) and remove water from raw natural gas. An extended field test to demonstrate system performance under real-world high-pressure conditions was conducted to convince industry users of the efficiency and reliability of the process. The system was designed and fabricated by Membrane Technology and Research, Inc. (MTR) and installed and operated at BP Amoco's Pascagoula, MS plant. The Gas Research Institute partially supported the field demonstration and BP-Amoco helped install the unit and provide onsite operators and utilities. The gas processed by the membrane system meets pipeline specifications for dew point and BTU value and can be delivered without further treatment to the pipeline. During the course of this project, MTR has sold thirteen commercial units related to the field test technology. Revenue generated from new business is already more than four times the research dollars invested in this process by DOE. The process is ready for broader commercialization and the expectation is to pursue the commercialization plans developed during this project, including collaboration with other companies already servicing the natural gas processing industry.

Kaaeid Lokhandwala

2007-03-30T23:59:59.000Z

82

Field Demonstration of a Membrane Process to Recover Heavy Hydrocarbons and to Remove Water from Natural Gas  

Science Conference Proceedings (OSTI)

The objective of this project is to design, construct and field demonstrate a membrane system to recover natural gas liquids (NGL) and remove water from raw natural gas. An extended field test to demonstrate system performance under real-world high-pressure conditions is being conducted to convince industry users of the efficiency and reliability of the process. The system was designed and fabricated by Membrane Technology and Research, Inc. (MTR) and installed and operated at BP Amoco's Pascagoula, MS plant. The Gas Research Institute is partially supporting the field demonstration and BP-Amoco helped install the unit and provides onsite operators and utilities. The gas processed by the membrane system meets pipeline specifications for dew point and BTU value and can be delivered without further treatment to the pipeline. Based on data from prior membrane module tests, the process is likely to be significantly less expensive than glycol dehydration followed by propane refrigeration, the principal competitive technology. During the course of this project, MTR has sold 13 commercial units related to the field test technology, and by the end of this demonstration project the process will be ready for broader commercialization. A route to commercialization has been developed during this project and involves collaboration with other companies already servicing the natural gas processing industry.

R. Baker; T. Hofmann; K. A. Lokhandwala

2006-09-29T23:59:59.000Z

83

Steam Generator Management Program: Effects of Different pH Control Agents on Pressurized Water Reactor Plant Systems and Components  

Science Conference Proceedings (OSTI)

Corrosion of materials in the condensate, feedwater, and drain systems of PWRs generates a significant amount of corrosion products in the secondary cycle. These corrosion products are generally transported into the steam generators and deposit on tubing surfaces, tubesheets, and tube support plates. Increased corrosion results in elevated levels of undesired corrosion products being deposited into the steam generators. To minimize corrosion of the secondary system components, control of pH in the second...

2009-12-04T23:59:59.000Z

84

Austin, TexasPARAMETRIC STUDY OF COMPONENT SELECTION AND OPERATION ON GENERIC DRAIN-BACK SOLAR WATER HEATER CERTIFICATION  

E-Print Network (OSTI)

I. Early experimental results of a research program to investigate the practicality of replacing the Solar Rating and Certification Corporation four day rating procedure with a more cost effective rating method for generic solar domestic hot water systems are reported. The generic systems experimental procedure and facility are described. Results from four experiments give an initial indication that the recirculation flow rate has little effect on system rating. Further experiments are required to assess the feasibility of replacing the current rating method with a simulated rating. 1.

W. T. Carlson; J. H. Davidson; W. S. Duff; D. M. Leone

1990-01-01T23:59:59.000Z

85

Utah Heavy Oil Program  

Science Conference Proceedings (OSTI)

The Utah Heavy Oil Program (UHOP) was established in June 2006 to provide multidisciplinary research support to federal and state constituents for addressing the wide-ranging issues surrounding the creation of an industry for unconventional oil production in the United States. Additionally, UHOP was to serve as an on-going source of unbiased information to the nation surrounding technical, economic, legal and environmental aspects of developing heavy oil, oil sands, and oil shale resources. UHOP fulGilled its role by completing three tasks. First, in response to the Energy Policy Act of 2005 Section 369(p), UHOP published an update report to the 1987 technical and economic assessment of domestic heavy oil resources that was prepared by the Interstate Oil and Gas Compact Commission. The UHOP report, entitled 'A Technical, Economic, and Legal Assessment of North American Heavy Oil, Oil Sands, and Oil Shale Resources' was published in electronic and hard copy form in October 2007. Second, UHOP developed of a comprehensive, publicly accessible online repository of unconventional oil resources in North America based on the DSpace software platform. An interactive map was also developed as a source of geospatial information and as a means to interact with the repository from a geospatial setting. All documents uploaded to the repository are fully searchable by author, title, and keywords. Third, UHOP sponsored Give research projects related to unconventional fuels development. Two projects looked at issues associated with oil shale production, including oil shale pyrolysis kinetics, resource heterogeneity, and reservoir simulation. One project evaluated in situ production from Utah oil sands. Another project focused on water availability and produced water treatments. The last project considered commercial oil shale leasing from a policy, environmental, and economic perspective.

J. Bauman; S. Burian; M. Deo; E. Eddings; R. Gani; R. Goel; C.K. Huang; M. Hogue; R. Keiter; L. Li; J. Ruple; T. Ring; P. Rose; M. Skliar; P.J. Smith; J.P. Spinti; P. Tiwari; J. Wilkey; K. Uchitel

2009-10-20T23:59:59.000Z

86

Water  

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

Laws Envirosearch Institutional Controls NEPA Activities RCRA RQ*Calculator Water HSS Logo Water Laws Overview of water-related legislation affecting DOE sites Clean...

87

Proposed and existing passive and inherent safety-related structures, systems, and components (building blocks) for advanced light-water reactors  

Science Conference Proceedings (OSTI)

A nuclear power plant is composed of many structures, systems, and components (SSCs). Examples include emergency core cooling systems, feedwater systems, and electrical systems. The design of a reactor consists of combining various SSCs (building blocks) into an integrated plant design. A new reactor design is the result of combining old SSCs in new ways or use of new SSCs. This report identifies, describes, and characterizes SSCs with passive and inherent features that can be used to assure safety in light-water reactors. Existing, proposed, and speculative technologies are described. The following approaches were used to identify the technologies: world technical literature searches, world patent searches, and discussions with universities, national laboratories and industrial vendors. 214 refs., 105 figs., 26 tabs.

Forsberg, C.W.; Moses, D.L.; Lewis, E.B.; Gibson, R.; Pearson, R.; Reich, W.J.; Murphy, G.A.; Staunton, R.H.; Kohn, W.E.

1989-10-01T23:59:59.000Z

88

Two Component Signal Transduction in Desulfovibrio Species  

Science Conference Proceedings (OSTI)

The environmentally relevant Desulfovibrio species are sulfate-reducing bacteria that are of interest in the bioremediation of heavy metal contaminated water. Among these, the genome of D. vulgaris Hildenborough encodes a large number of two component systems consisting of 72 putative response regulators (RR) and 64 putative histidinekinases (HK), the majority of which are uncharacterized. We classified the D. vulgaris Hildenborough RRs based on their output domains and compared the distribution of RRs in other sequenced Desulfovibrio species. We have successfully purified most RRs and several HKs as His-tagged proteins. We performed phospho-transfer experiments to verify relationships between cognate pairs of HK and RR, and we have also mapped a few non-cognate HK-RR pairs. Presented here are our discoveries from the Desulfovibrio RR categorization and results from the in vitro studies using purified His tagged D. vulgaris HKs and RRs.

Luning, Eric; Rajeev, Lara; Ray, Jayashree; Mukhopadhyay, Aindrila

2010-05-17T23:59:59.000Z

89

HEAVY-ION RADIOGRAPHY AND HEAVY-ION COMPUTED TOMOGRAPHY  

E-Print Network (OSTI)

In: Biological and Medical Research with Accelerated Heavyeds. Biological and Medical Research with Accelerated HeavyIn: Biological and Medical Research with Accelerated Heavy

Fabrikant, J.I.

2010-01-01T23:59:59.000Z

90

Heavy Precipitation and High Streamflow in the Contiguous United States: Trends in the Twentieth Century  

Science Conference Proceedings (OSTI)

Changes in several components of the hydrological cycle over the contiguous United States have been documented during the twentieth century: an increase of precipitation, especially heavy and very heavy precipitation, and a significant retreat in ...

Pavel Ya Groisman; Richard W. Knight; Thomas R. Karl

2001-02-01T23:59:59.000Z

91

Block Heavy Hitters  

E-Print Network (OSTI)

e study a natural generalization of the heavy hitters problem in thestreaming context. We term this generalization *block heavy hitters* and define it as follows. We are to stream over a matrix$A$, and report all *rows* ...

Andoni, Alexandr

2008-05-02T23:59:59.000Z

92

Heavy Vehicle Propulsion Materials Program  

DOE Green Energy (OSTI)

The objective of the Heavy Vehicle Propulsion Materials Program is to develop the enabling materials technology for the clean, high-efficiency diesel truck engines of the future. The development of cleaner, higher-efficiency diesel engines imposes greater mechanical, thermal, and tribological demands on materials of construction. Often the enabling technology for a new engine component is the material from which the part can be made. The Heavy Vehicle Propulsion Materials Program is a partnership between the Department of Energy (DOE), and the diesel engine companies in the United States, materials suppliers, national laboratories, and universities. A comprehensive research and development program has been developed to meet the enabling materials requirements for the diesel engines of the future. Advanced materials, including high-temperature metal alloys, intermetallics, cermets, ceramics, amorphous materials, metal- and ceramic-matrix composites, and coatings, are investigated for critical engine applications.

Sidney Diamond; D. Ray Johnson

1999-04-26T23:59:59.000Z

93

Plant rhamnogalacturonan II complexation of heavy metal cations  

DOE Patents (OSTI)

The present invention provides rhamnogalacturonan-II (RG-II) and relates to its ability to complex specific multivalent heavy metal cations. In the presence of boric acid, RG-II monomers form dimers that are cross-linked by a borate ester. The yield of such borate ester cross-linked dimers of RG-II is enhanced in the presence of specific heavy metal cations. The present invention further relates to the utility of RG-II in assays for the detection of specific heavy metal contamination; as a reagent useful in the removal of specific heavy metal cations contaminating foods and liquids, for example, fish, wines, etc.; as a pharmaceutical composition useful as an antidote in specific heavy metal cation poisoning; as a treatment for the detoxification of specific heavy metal cations from blood and/or tissues; and in a method of remediation of waters and soils contaminated with specific heavy metal cations.

O' Neill, Malcolm A. (Winterville, GA); Pellerin, Patrice J. M. (Montpellier, FR); Warrenfeltz, Dennis (Athens, GA); Vidal, Stephane (Combaillaux, FR); Darvill, Alan G. (Athens, GA); Albersheim, Peter (Athens, GA)

1999-01-01T23:59:59.000Z

94

Plant rhamnogalacturonan II complexation of heavy metal cations  

DOE Patents (OSTI)

The present invention provides rhamnogalacturonan-II (RG-II) and relates to its ability to complex specific multivalent heavy metal cations. In the presence of boric acid, RG-II monomers form dimers that are cross-linked by a borate ester. The yield of such borate ester cross-linked dimers of RG-II is enhanced in the presence of specific heavy metal cations. The present invention further relates to the utility of RG-II in assays for the detection of specific heavy metal contamination; as a reagent useful in the removal of specific heavy metal cations contaminating foods and liquids, for example, fish, wines, etc.; as a pharmaceutical composition useful as an antidote in specific heavy metal cation poisoning; as a treatment for the detoxification of specific heavy metal cations from blood and/or tissues; and in a method of remediation of waters and soils contaminated with specific heavy metal cations. 15 figs.

O`Neill, M.A.; Pellerin, P.J.M.; Warrenfeltz, D.; Vidal, S.; Darvill, A.G.; Albersheim, P.

1999-03-02T23:59:59.000Z

95

MOIRA-PLUS: A decision support system for the management of complex fresh water ecosystems contaminated by radionuclides and heavy metals  

Science Conference Proceedings (OSTI)

The accidental release of radioactive substances into the environment leads to the necessity of applying suitable countermeasures for the restoration of the polluted environment. However, despite their obvious benefits, such interventions may result ... Keywords: Countermeasures, Decision systems, Fresh water ecosystems, MOIRA DSS, Modelling, Multi-attribute analysis

Luigi Monte; John E. Brittain; Eduardo Gallego; Lars Hĺkanson; Dmitry Hofman; Antonio Jiménez

2009-05-01T23:59:59.000Z

96

Investigation of the Sensitivity of Water Cycle Components Simulated by the Canadian Regional Climate Model to the Land Surface Parameterization, the Lateral Boundary Data, and the Internal Variability  

Science Conference Proceedings (OSTI)

This study investigates the sensitivity of components of the hydrological cycle simulated by the Canadian Regional Climate Model (CRCM) to lateral boundary forcing, the complexity of the land surface scheme (LSS), and the internal variability ...

Biljana Music; Daniel Caya

2009-02-01T23:59:59.000Z

97

Materials Reliability Program: High-Strength Structural Bolting and Nickel-Base Alloy Components in B&W-Design Pressurized Water Rea ctor Internals (MRP-273)  

Science Conference Proceedings (OSTI)

This document summarizes information pertinent to the seven currently operating B&W-design 177-FA (fuel assembly) pressurized water reactors (PWRs) for the EPRI Materials Reliability Program (MRP).

2010-12-23T23:59:59.000Z

98

BWRVIP-186: BWR Vessel and Internals Project, Effect of Water Chemistry and Temperature Transients on the IGSCC Growth Rates in BWR Components  

Science Conference Proceedings (OSTI)

The oxidizing nature of the boiling water reactor (BWR) environment, coupled with high tensile residual stresses, have led to intergranular stress corrosion cracking (IGSCC) events. This report summarizes the available information on the effect of water chemistry transients on crack growth rates of Type 304 stainless steel and nickel-base weld metal Alloy 182. The report also provides crack growth rate equations and tables for evaluating the amount of crack extension that may have occurred during a trans...

2008-04-16T23:59:59.000Z

99

The Leaching Behavior of Heavy Metals in MSWI Bottom Ash ... - TMS  

Science Conference Proceedings (OSTI)

May 1, 2007 ... The Leaching Behavior of Heavy Metals in MSWI Bottom Ash by Carbonation Reaction with Diffeent Water Content by Nam-Il Um, Kwang-Suk ...

100

Two Manufacturers, a Water Treatment Company and a Bank ...  

Science Conference Proceedings (OSTI)

... today announced two manufacturers, a water ... America's largest, independent manufacturer and marketer of ... heavy duty, and off-highway vehicles. ...

2011-07-13T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Process for removing heavy metal compounds from heavy crude oil  

DOE Patents (OSTI)

A process is provided for removing heavy metal compounds from heavy crude oil by mixing the heavy crude oil with tar sand; preheating the mixture to a temperature of about 650.degree. F.; heating said mixture to up to 800.degree. F.; and separating tar sand from the light oils formed during said heating. The heavy metals removed from the heavy oils can be recovered from the spent sand for other uses.

Cha, Chang Y. (Golden, CO); Boysen, John E. (Laramie, WY); Branthaver, Jan F. (Laramie, WY)

1991-01-01T23:59:59.000Z

102

HEAVY ION INERTIAL FUSION  

E-Print Network (OSTI)

Accelerators as Drivers for Inertially Confined Fusion, W.B.LBL-9332/SLAC-22l (1979) Fusion Driven by Heavy Ion Beams,OF CALIFORNIA f Accelerator & Fusion Research Division

Keefe, D.

2008-01-01T23:59:59.000Z

103

Relativistic Heavy Ion Collider  

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

at the same time. Capable of accelerating 70 trillion protons with every pulse, and heavy ions such as gold and iron, the AGS receives protons and other ions from the AGS...

104

Heavy Ion Fusion Systems Assessment study  

SciTech Connect

The Heavy Ion Fusion Systems Assessment (HIFSA) study was conducted with the specific objective of evaluating the prospects of using induction linac drivers to generate economical electrical power from inertial confinement fusion. The study used algorithmic models of representative components of a fusion system to identify favored areas in the multidimensional parameter space. The resulting cost-of-electricity (COE) projections are comparable to those from other (magnetic) fusion scenarios, at a plant size of 100 MWe.

Dudziak, D.J.; Herrmannsfeldt, W.B.

1986-07-01T23:59:59.000Z

105

Custom Components - Microsystems Science, Technology, and Components  

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

Connectors area will help you optimize your choice of connectors for your requirements Passive RF Components Our Passive RF Components area will work with you to identify, specify...

106

Super Heavy Element Discovery | ornl.gov  

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

Super Heavy Element Discovery SHARE Super Heavy Element Discovery The location of the Transactinides (super-heavy elements) shown on the Periodic Table. ORNL is internationally...

107

Solenoid transport for heavy ion fusion  

E-Print Network (OSTI)

Transport for Heavy Ion Fusion* Edward Lee** LawrenceHm Heavy Ion Inertial Fusion Abstract Solenoid transport ofseveral stages of a heavy ion fusion driver. In general this

Lee, Edward

2004-01-01T23:59:59.000Z

108

SUPRI heavy oil research program  

SciTech Connect

The 14th Annual Report of the SUPRI Heavy Oil Research Program includes discussion of the following topics: (1) A Study of End Effects in Displacement Experiments; (2) Cat Scan Status Report; (3) Modifying In-situ Combustion with Metallic Additives; (4) Kinetics of Combustion; (5) Study of Residual Oil Saturation for Steam Injection and Fuel Concentration for In-Situ Combustion; (6) Analysis of Transient Foam Flow in 1-D Porous Media with Computed Tomography; (7) Steam-Foam Studies in the Presence of Residual Oil; (8) Microvisualization of Foam Flow in a Porous Medium; (9) Three- Dimensional Laboratory Steam Injection Model; (10) Saturation Evaluation Following Water Flooding; (11) Numerical Simulation of Well-to-Well Tracer Flow Test with Nonunity Mobility Ratio.

Aziz, K.; Ramey, H.J. Jr.; Castanier, L.M.

1991-12-01T23:59:59.000Z

109

Heavy ion fusion--Using heavy ions to make electricity  

E-Print Network (OSTI)

in Proc. of the Inertial Fusion Science and ApplicationsP. Abbott, P. F. Peterson, Fusion Science and Technology 44March 15–20, 2004 Heavy Ion Fusion– Using Heavy Ions to Make

Celata, C.M.

2004-01-01T23:59:59.000Z

110

Identifying heavy Higgs bosons  

SciTech Connect

Two techniques for identifying heavy Higgs bosons produced at SSC energies are discussed. In the first, the Higgs boson decays into ZZ, with one Z decaying into an e-pair or ..mu..-pair and the other into a neutrino pair. In the second, the production of the Higgs boson by WW fusion is tagged by detecting the quarks that produced the bremsstrahlung virtual W's. The associated Higgs decay is identified by one leptonic and one hadronic decay. Both methods appear capable of finding a heavy Higgs boson provided the SSC design parameters are achieved. 16 refs., 2 figs., 2 tabs.

Cahn, R.N.

1986-06-01T23:59:59.000Z

111

Characterization,demulsification and transportation of heavy crude oil: Pipeline trasportation; emulsion stability; demulsification; droplet size; shear stress & shear rate  

Science Conference Proceedings (OSTI)

Stable concentrated oil-in-water (O/W) emulsions were prepared and their application for heavy oil pipeline transportation was investigated using very viscous Malaysian heavy crude oil. Two Malaysian heavy crude oil samples, Tapis and a blend of Tapis ...

Abdurahman H. Nour; Chew Fern Tan; Azhari H. Nour

2012-02-01T23:59:59.000Z

112

Exploiting heavy oil reserves  

E-Print Network (OSTI)

the behaviour of oil and gas prices and the fruits of future exploration. The rate of technological progress. How optimistic are you that the North Sea remains a viable source of oil and gas? A) Our new researchNorth Sea investment potential Exploiting heavy oil reserves Beneath the waves in 3D Aberdeen

Levi, Ran

113

DEVELOPMENTS IN HEAVY QUARKONIUM SPECTROSCOPY  

E-Print Network (OSTI)

­ 1­ DEVELOPMENTS IN HEAVY QUARKONIUM SPECTROSCOPY Written May 2012 by S. Eidelman (Budker Inst. Navas (Univ. Granada), and C. Patrignani (Univ. Genova, INFN). A golden age for heavy quarkonium physics at HERA and the Tevatron matured; and heavy-ion collisions at RHIC opened a window on the deconfinement

114

HEAVY AND THERMAL OIL RECOVERY PRODUCTION MECHANISMS  

Science Conference Proceedings (OSTI)

This technical progress report describes work performed from April 1 through June 30, 2002, for the project ''Heavy and Thermal Oil Recovery Production Mechanisms.'' We investigate a broad spectrum of topics related to thermal and heavy-oil recovery. Significant results were obtained in the areas of multiphase flow and rock properties, hot-fluid injection, improved primary heavy oil recovery, and reservoir definition. The research tools and techniques used are varied and span from pore-level imaging of multiphase fluid flow to definition of reservoir-scale features through streamline-based history-matching techniques. Briefly, experiments were conducted to image at the pore level matrix-to-fracture production of oil from a fractured porous medium. This project is ongoing. A simulation studied was completed in the area of recovery processes during steam injection into fractured porous media. We continued to study experimentally heavy-oil production mechanisms from relatively low permeability rocks under conditions of high pressure and high temperature. High temperature significantly increased oil recovery rate and decreased residual oil saturation. Also in the area of imaging production processes in laboratory-scale cores, we use CT to study the process of gas-phase formation during solution gas drive in viscous oils. Results from recent experiments are reported here. Finally, a project was completed that uses the producing water-oil ratio to define reservoir heterogeneity and integrate production history into a reservoir model using streamline properties.

Anthony R. Kovscek

2002-07-01T23:59:59.000Z

115

Heavy-section steel irradiation program. Progress report, October 1992--March 1993  

Science Conference Proceedings (OSTI)

Maintaining the integrity of the reactor pressure vessel (RPV) in a light-water-cooled nuclear power plant is crucial in preventing and controlling severe accidents that have the potential for major contamination release. The RPV is one of only two more safety-related components of the plant for which a duplicate or redundant backup system does not exist. It is therefore imperative to understand and be able to predict the capabilities and limitations of the integrity inherent in the RPV. In particular, it is vital to fully understand the degree of irradiation-induced degradation of the RPV`s fracture resistance that occurs during service. For this reason, the Heavy-Section Steel Irradiation (HSSI) Program has been established at Oak Ridge National Laboratory (ORNL) under sponsorship of the Nuclear Regulatory Commission (NRC). The primary goal of this major safety program is to provide a thorough, quantitative assessment of the effects of neutron irradiation on the material behavior (in particular, the fracture toughness properties) of typical pressure-vessel steels as they relate to light-water-reactor pressure-vessel integrity. The program centers on experimental assessments of irradiation-induced embrittlement (including the completion of certain irradiation studies previously conducted by the Heavy-Section Steel Technology Program) augmented by detailed examinations and modeling of the accompanying microstructural changes. Effects of specimen size; material chemistry; product form and microstructure; irradiation fluence, flux, temperature, and spectrum; and postirradiation annealing are being examined on a wide range of fracture properties.

Corwin, W.R.

1998-04-01T23:59:59.000Z

116

Relativistic Heavy Ion Collider  

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

Relativistic Heavy Ion Collider Relativistic Heavy Ion Collider managed for the U.S. Department of Energy by Brookhaven Science Associates, founded by Stony Brook University and Battelle. managed for the U.S. Department of Energy by Brookhaven Science Associates, a company founded by Stony Brook University and Battelle 07/07 Brookhaven National Laboratory Funded by the U.S. Department of Energy, Brookhaven National Laboratory is a multipurpose research institution located on a 5,300-acre site on Long Island, New York. Six Nobel Prize-winning discoveries have been made at Brookhaven Lab. The Laboratory operates large-scale scientific facilities and performs research in physics, chemistry, biology, medicine, applied science, and

117

Characterizing Heavy Ion  

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

Heavy Ion Heavy Ion Reactions in the 1980's Is there Treasure at the end of the Rainbow? & What happens and how do different modes compete? John Schiffer One of the three research areas for ATLAS, as stated in a 1984 document to Congress: Are there some new marvelous symmetries, hidden in resonances in heavier nuclei, beyond 12 C+ 12 C and its immediate vicinity? (s.c. linac work, pre-ATLAS) Other attempts to chase the rainbow 180 o elastic scattering of 12 C on 40 Ca shows structure Fusion of 16 O on 40 Ca does not. In the end, it seemed that these structures were sometimes present in alpha-particle nuclei, but almost never in others. Some optimists, continued the pursuit. We also looked at the total fusion cross section in systems that showed resonances in scattering.

118

Computing Heavy Elements  

E-Print Network (OSTI)

Reliable calculations of the structure of heavy elements are crucial to address fundamental science questions such as the origin of the elements in the universe. Applications relevant for energy production, medicine, or national security also rely on theoretical predictions of basic properties of atomic nuclei. Heavy elements are best described within the nuclear density functional theory (DFT) and its various extensions. While relatively mature, DFT has never been implemented in its full power, as it relies on a very large number (~ 10^9-10^12) of expensive calculations (~ day). The advent of leadership-class computers, as well as dedicated large-scale collaborative efforts such as the SciDAC 2 UNEDF project, have dramatically changed the field. This article gives an overview of the various computational challenges related to the nuclear DFT, as well as some of the recent achievements.

Schunck, N; Kortelainen, M; McDonnell, J; Moré, J; Nazarewicz, W; Pei, J; Sarich, J; Sheikh, J; Staszczak, A; Stoitsov, M; Wild, S M

2011-01-01T23:59:59.000Z

119

Computing Heavy Elements  

E-Print Network (OSTI)

Reliable calculations of the structure of heavy elements are crucial to address fundamental science questions such as the origin of the elements in the universe. Applications relevant for energy production, medicine, or national security also rely on theoretical predictions of basic properties of atomic nuclei. Heavy elements are best described within the nuclear density functional theory (DFT) and its various extensions. While relatively mature, DFT has never been implemented in its full power, as it relies on a very large number (~ 10^9-10^12) of expensive calculations (~ day). The advent of leadership-class computers, as well as dedicated large-scale collaborative efforts such as the SciDAC 2 UNEDF project, have dramatically changed the field. This article gives an overview of the various computational challenges related to the nuclear DFT, as well as some of the recent achievements.

N. Schunck; A. Baran; M. Kortelainen; J. McDonnell; J. Moré; W. Nazarewicz; J. Pei; J. Sarich; J. Sheikh; A. Staszczak; M. Stoitsov; S. M. Wild

2011-07-25T23:59:59.000Z

120

Heavy Vehicle Propulsion Materials  

DOE Green Energy (OSTI)

The objectives are to Provide Key Enabling Materials Technologies to Increase Energy Efficiency and Reduce Exhaust Emissions. The following goals are listed: Goal 1: By 3rd quarter 2002, complete development of materials enabling the maintenance or improvement of fuel efficiency {ge} 45% of class 7-8 truck engines while meeting the EPA/Justice Department ''Consent Decree'' for emissions reduction. Goal 2: By 4th quarter 2004, complete development of enabling materials for light-duty (class 1-2) diesel truck engines with efficiency over 40%, over a wide range of loads and speeds, while meeting EPA Tier 2 emission regulations. Goal 3: By 4th quarter 2006, complete development of materials solutions to enable heavy-duty diesel engine efficiency of 50% while meeting the emission reduction goals identified in the EPA proposed rule for heavy-duty highway engines.''

Ray Johnson

2000-01-31T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Heavy Ions - Cyclotron  

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

Heavy Ions Heavy Ions Heavy ions used at the BASE Facility are accelerated in the form of "cocktails," named because of the fact that several heavy ions with the same mass-to-charge ratio are sent into the Cyclotron, which accelerates the ions while acting as a precision mass separator. The Control Room Operator then uses Cyclotron frequency to select only the desired ion, a process that takes about 2 minutes. We provide four standard cocktails: 4.5, 10, 16, and 30 MeV/nucleon. Depending on the cocktail, LETs from 1 to 100 MeV/(mg/cm^2) and flux levels of up to 1E7 ions/cm2-sec are available. Parts are tested in our vacuum chamber, and can be remotely positioned horizontally, vertically, or rotationally (y and z axes) with the motion table. An alignment laser is available to ensure the part is in the center of the beam. Mounting hardware is readily available. 12xBNC (F-F), 2x25-pin D (F-M or M-F), 4x40-pin flat ribbon (M-M), 4x50-pin flat ribbon (M-M), 12xSMA (F-F), and 2xEthernet vacuum feedthroughs are mounted upon request. (The 4x40-pin and 4x50-pin flat ribbon connectors are wired straight across, so you will need a F-F adapter to correct the pin numbers to normal.) Holes are provided through the cave shielding blocks for connecting additional test equipment, with a distance of approximately 10 feet from vacuum feedthrough to the top of the shielding block.

122

PERFORMANCE OF LIQUI-CEL EXTRA-FLOW MEMBRANE CONTRACTOR IN A PURE WATER AND IN A 0.2% SODIUM CHLORIDE SOLUTION (SNO-STR-2001-11).  

SciTech Connect

After completion of SNO's first phase measurement of the neutrino charge current, two tons of salt were added into the SNO heavy water to increase the sensitivity of the neutral current measurement (Phase II). Liqui-Cel Extra-Flow Membrane Contactors (simply called Liqui-Cel) are used in the SNO heavy-water circulating system to remove the dissolved gases, such as oxygen, nitrogen, radon, and water vapor from the liquid water. One possible scenario with phase II operation is that the salt may leak through the Liqui-Cel Membrane and come in contact with the vacuum pumps and other metal components of the Heavy-Water Vapor Recovery System. In this scenario, corrosion will damage these components, especially the vacuum pump (Pfeiffer UniDry Pump with cast iron interior), and increase the operational difficulties. A series of tests for the behavior of the Liqui-Cel System in pure water and in salt systems was conducted at the Brookhaven National Laboratory in order to measure the transfer of (a) water vapor and (b) salt, if there is any, through the membrane. Initially a 10-inch by 28-inch Liqui-Cel unit, identical to those used in the SNO heavy-water circulating system, was obtained from SNO site. However, extensive analysis showed that the membrane in this unit was defective: a replacement membrane would cost several thousand dollars. Instead, a smaller, 2.5-inch x 8-inch Liqui-Cel, obtained from Dr. Richard Helmers of the University of British Columbia, was used in this experiment. A comparison of the present experiment with the SNO heavy-water system is done with theoretical calculations. The results are discussed in the following sections.

YEH,M.; BOGER,J.; HAHN,R.L.

2001-11-05T23:59:59.000Z

123

Nuclear reactor heat transport system component low friction support system  

SciTech Connect

A support column for a heavy component of a liquid metal fast breeder reactor heat transport system which will deflect when the pipes leading coolant to and from the heavy component expand or contract due to temperature changes includes a vertically disposed pipe, the pipe being connected to the heavy component by two longitudinally spaced cycloidal dovetail joints wherein the distal end of each of the dovetails constitutes a part of the surface of a large diameter cylinder and the centerlines of these large diameter cylinders intersect at right angles and the pipe being supported through two longitudinally spaced cycloidal dovetail joints wherein the distal end of each of the dovetails constitutes a part of the surface of a large diameter cylinder and the centerlines of these large diameter cylinders intersect at right angles, each of the cylindrical surfaces bearing on a flat and horizontal surface.

Wade, Elman E. (Ruffs Dale, PA)

1980-01-01T23:59:59.000Z

124

Software Component Integration Testing  

Science Conference Proceedings (OSTI)

... a combination of off-the-shelf components, with new components integrated to satisfy ... oriented, that is, it consists of objects with state and behavior. ...

2011-12-02T23:59:59.000Z

125

The Heavy Ion Fusion Science Virtual National Laboratory Status of heavy-ion-beam-driven  

E-Print Network (OSTI)

and fusion Ranges given in table reflect options under study Table 4.1, page 43 of an HIF White Paper.E. Coleman et al., in Proc. of the 2007 Particle Accelerator Conf., Albuquerque, NM, 2007(IEEE catalog# 07CH-see http://videos.komando.com/2008/08/19/water-painting/]. #12;12/7/08 The Heavy Ion Fusion Science Virtual

126

HEAVY AND THERMAL OIL RECOVERY PRODUCTION MECHANISMS  

SciTech Connect

The Stanford University Petroleum Research Institute (SUPRI-A) studies oil recovery mechanisms relevant to thermal and heavy-oil production. The scope of work is relevant across near-, mid-, and long-term time frames. In August of 2000 we received funding from the U. S. DOE under Award No. DE-FC26-00BC15311 that completed December 1, 2003. The project was cost shared with industry. Heavy oil (10 to 20{sup o} API) is an underutilized energy resource of tremendous potential. Heavy oils are much more viscous than conventional oils. As a result, they are difficult to produce with conventional recovery methods. Heating reduces oil viscosity dramatically. Hence, thermal recovery is especially important because adding heat, usually via steam injection generally improves displacement efficiency. The objectives of this work were to improve our understanding of the production mechanisms of heavy oil under both primary and enhanced modes of operation. The research described spanned a spectrum of topics related to heavy and thermal oil recovery and is categorized into: (1) multiphase flow and rock properties, (2) hot fluid injection, (3) improved primary heavy-oil recovery, (4) in-situ combustion, and (5) reservoir definition. Technology transfer efforts and industrial outreach were also important to project effort. The research tools and techniques used were quite varied. In the area of experiments, we developed a novel apparatus that improved imaging with X-ray computed tomography (CT) and high-pressure micromodels etched with realistic sandstone roughness and pore networks that improved visualization of oil-recovery mechanisms. The CT-compatible apparatus was invaluable for investigating primary heavy-oil production, multiphase flow in fractured and unfractured media, as well as imbibition. Imbibition and the flow of condensed steam are important parts of the thermal recovery process. The high-pressure micromodels were used to develop a conceptual and mechanistic picture of primary heavy-oil production by solution gas drive. They allowed for direct visualization of gas bubble formation, bubble growth, and oil displacement. Companion experiments in representative sands and sandstones were also conducted to understand the mechanisms of cold production. The evolution of in-situ gas and oil saturation was monitored with CT scanning and pressure drop data. These experiments highlighted the importance of depletion rate, overburden pressure, and oil-phase chemistry on the cold production process. From the information provided by the experiments, a conceptual and numerical model was formulated and validated for the heavy-oil solution gas drive recovery process. Also in the area of mechanisms, steamdrive for fractured, low permeability porous media was studied. Field tests have shown that heat injected in the form of steam is effective at unlocking oil from such reservoir media. The research reported here elucidated how the basic mechanisms differ from conventional steamdrive and how these differences are used to an advantage. Using simulations of single and multiple matrix blocks that account for details of heat transfer, capillarity, and fluid exchange between matrix and fracture, the importance of factors such as permeability contrast between matrix and fracture and oil composition were quantified. Experimentally, we examined the speed and extent to which steam injection alters the permeability and wettability of low permeability, siliceous rocks during thermal recovery. Rock dissolution tends to increase permeability moderately aiding in heat delivery, whereas downstream the cooled fluid deposits silica reducing permeability. Permeability reduction is not catastrophic. With respect to wettability, heat shifts rock wettability toward more water wet conditions. This effect is beneficial for the production of heavy and medium gravity oils as it improves displacement efficiency. A combination of analytical and numerical studies was used to examine the efficiency of reservoir heating using nonconventional wells such as horizontal and multi

Anthony R. Kovscek; Louis M. Castanier

2003-12-31T23:59:59.000Z

127

Heavy Truck Engine Program  

DOE Green Energy (OSTI)

The Heavy Duty Truck Engine Program at Cummins embodied three significant development phases. All phases of work strove to demonstrate a high level of diesel engine efficiency in the face of increasingly stringent emission requirements. Concurrently, aftertreatment system development and refinement was pursued in support of these efficiency demonstrations. The program's first phase focused on the demonstration in-vehicle of a high level of heavy duty diesel engine efficiency (45% Brake Thermal Efficiency) at a typical cruise condition while achieving composite emissions results which met the 2004 U.S. EPA legislated standards. With a combination of engine combustion calibration tuning and the development and application of Urea-based SCR and particulate aftertreatment, these demonstrations were successfully performed by Q4 of 2002. The second phase of the program directed efforts towards an in-vehicle demonstration of an engine system capable of meeting 2007 U.S. EPA legislated emissions requirements while achieving 45% Brake Thermal Efficiency at cruise conditions. Through further combustion optimization, the refinement of Cummins Cooled EGR architecture, the application of a high pressure common rail fuel system and the incorporation of optimized engine parasitics, Cummins Inc. successfully demonstrated these deliverables in Q2 of 2004. The program's final phase set a stretch goal of demonstrating 50% Brake Thermal Efficiency from a heavy duty diesel engine system capable of meeting 2010 U.S. EPA legislated emissions requirements. Cummins chose to pursue this goal through further combustion development and refinement of the Cooled EGR system architecture and also applied a Rankine cycle Waste Heat Recovery technique to convert otherwise wasted thermal energy to useful power. The engine and heat recovery system was demonstrated to achieve 50% Brake Thermal Efficiency while operating at a torque peak condition in second quarter, 2006. The 50% efficient engine system was capable of meeting 2010 emissions requirements through the application of NOx and particulate matter reduction techniques proven earlier in the program.

Nelson, Christopher

2009-01-08T23:59:59.000Z

128

Simulation of a cold heavy oil production with sand (CHOPS) separation system  

Science Conference Proceedings (OSTI)

A simulation of a heavy oil well site separation process was developed to test some of the requirements of operating on the North Slope of Alaska. This simulation used estimates of the dynamic proportions of oil, water and sand coming from the oil well ... Keywords: iThink™, CHOPS, North Slope, Alaska, continuous simulation, heavy oil

John Danielsen; David B. Hoffman

2009-03-01T23:59:59.000Z

129

Technology Analysis - Heavy Vehicle Technologies  

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

the GPRA benefits estimates for EERE's Vehicle Technologies Program's heavy vehicle technology research activities. Argonne researchers develop the benefits analysis using four...

130

DEDICATED HEAVY ION MEDICAL ACCELERATORS  

E-Print Network (OSTI)

et al. , ,8iolog·ical and Medical Research with Acceleratedet al. , "Biological and Medical Research with J\\cceleratedic Heavy Ions in Medical and Scientific Research, Edmonton,

Gough, R.A.

2013-01-01T23:59:59.000Z

131

Heavy Ion Fusion development plan  

SciTech Connect

Some general cnsiderations in the fusion development program are given. The various factors are considered that must be determined before heavy ion fusion can be assessed. (MOW)

Maschke, A.W.

1978-01-01T23:59:59.000Z

132

Very high energy heavy-ion accelerators  

SciTech Connect

A review is given of various programs for building heavy ion accelerators. Topics discussed are (1) options of reaching very high energies with heavy ions; (2) present performance of the superHILAC and the Bevalac; (3) heavy ion sources; (4) applications of heavy ion accelerators outside of basic research; and (5) reliability and operating costs of heavy ion sources. (PMA)

Grunder, H.A.

1975-10-01T23:59:59.000Z

133

HEAVY AND THERMAL OIL RECOVERY PRODUCTION MECHANISMS  

Science Conference Proceedings (OSTI)

This technical progress report describes work performed from October 1 through December 31, 2002 , for the project ''Heavy and Thermal Oil Recovery Production Mechanisms.'' In this project, a broad spectrum of research is undertaken related to thermal and heavy-oil recovery. The research tools and techniques used are varied and span from pore-level imaging of multiphase fluid flow to definition of reservoir-scale features through streamline-based history-matching techniques. During this period, experimental data regarding multidimensional imbibition was analyzed to obtain shape factors appropriate for dual-porosity simulation. It is shown that the usual assumption of constant, time-independent shape factors is incorrect. In other work, we continued to study the mechanisms by which oil is produced from fractured media at high pressure and high temperature. High temperature significantly increased the apparent wettability and affected water relative permeability of cores used in previous experiments. A phenomenological and mechanistic cause for this behavior is sought. Our work in the area of primary production of heavy oil continues with field cores and crude oil. On the topic of reservoir definition, work continued on developing techniques that integrate production history into reservoir models using streamline-based properties.

Anthony R. Kovscek

2003-01-01T23:59:59.000Z

134

Guidelines to achieve seals with minimal leak rates for HWR-NPR coolant system components  

SciTech Connect

Seal design practices that are acceptable in pressurized-water and boiling-water reactors in the United States are not usable for the Heavy Water Reactor-New Production Reactor (HWR-NPR) because of the stringent requirement on tritium control for the atmosphere within its containment building. To maintain an atmosphere in which workers do not need protective equipment, the components of the coolant system must have a cumulative leak rate less than 0.00026 L/s. Existing technology for seal systems was reviewed with regard to flange, elastomer, valve, and pump design. A technology data base for the designers of the HWR-NPR coolant system was derived from operating experience and seal development work on reactors in the United States, Canada, and Europe. This data base was then used to generate guidelines for the design of seals and/or joints for the HWR-NPR coolant system. Also discussed are needed additional research and development, as well as the necessary component qualification tests for an effective quality control program. 141 refs., 21 figs., 14 tabs.

Finn, P.A.

1991-03-01T23:59:59.000Z

135

Heavy Vehicle Propulsion Materials Program: Progress and Highlights  

DOE Green Energy (OSTI)

The Heavy Vehicle Propulsion Materials Program was begun in 1997 to support the enabling materials needs of the DOE Office of Heavy Vehicle Technologies (OHVT). The technical agenda for the program grew out of the technology roadmap for the OHVT and includes efforts in materials for: fuel systems, exhaust aftertreatment, valve train, air handling, structural components, electrochemical propulsion, natural gas storage, and thermal management. A five-year program plan was written in early 2000, following a stakeholders workshop. The technical issues and planned and ongoing projects are discussed. Brief summaries of several technical highlights are given.

D. Ray Johnson; Sidney Diamond

2000-06-19T23:59:59.000Z

136

REVIEW ARTICLE FOCUS Quantum criticality in heavy-fermion metals  

E-Print Network (OSTI)

again1 . The transformation between ice and water also illustrates another concept in phase transitions the collective fluctuations of matter undergoing a second-order phase transition at zero temperature. Heavy a quantum phase transition to a new ground state. As simple as this sounds, quantum phase transitions

Loss, Daniel

137

Heavy Machine Shop | Central Fabrication Services | Brookhaven...  

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

Heavy Machine Shop Heavy Machine Shop The Heavy Machine Shop facility is located in building 479, and may be accessed by the main door on the north face or front of the building....

138

Heavy crude oil recovery  

SciTech Connect

The oil crisis of the past decade has focused most of the attention and effort of researchers on crude oil resources, which are accepted as unrecoverable using known technology. World reserves are estimated to be 600-1000 billion metric tons, and with present technology 160 billion tons of this total can be recovered. This book is devoted to the discussion of Enhanced Oil Recovery (EOR) techniques, their mechanism and applicability to heavy oil reservoirs. The book also discusses some field results. The use of numerical simulators has become important, in addition to laboratory research, in analysing the applicability of oil recovery processes, and for this reason the last section of the book is devoted to simulators used in EOR research.

Okandan, E.

1984-01-01T23:59:59.000Z

139

HEAVY ION LINEAR ACCELERATOR  

DOE Patents (OSTI)

A linear accelerator of heavy ions is described. The basic contributions of the invention consist of a method and apparatus for obtaining high energy particles of an element with an increased charge-to-mass ratio. The method comprises the steps of ionizing the atoms of an element, accelerating the resultant ions to an energy substantially equal to one Mev per nucleon, stripping orbital electrons from the accelerated ions by passing the ions through a curtain of elemental vapor disposed transversely of the path of the ions to provide a second charge-to-mass ratio, and finally accelerating the resultant stripped ions to a final energy of at least ten Mev per nucleon.

Van Atta, C.M.; Beringer, R.; Smith, L.

1959-01-01T23:59:59.000Z

140

Beyond Generic Component Parameters  

Science Conference Proceedings (OSTI)

For flexible use in application contexts, software components should be parameterized, but also extended appropriately. Until now, there is no language mechanism to solve both problems uniformly. This paper presents a new concept, component hooks. Hooks ...

Uwe Aßmann

2002-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

SYNCHROTRONS FOR HEAVY IONS - BEVALAC EXPERIENCE  

E-Print Network (OSTI)

Heavy Ions ir. Medical and Scientific Research", Edmonton,Heavy Ions in Medical and Scientific Research" Edmonton,vigorous medical and nuclear science research groups. The

Grunder, H.A.

2010-01-01T23:59:59.000Z

142

Glimpse of heavy electrons reveals "hidden order"  

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

Glimpse of heavy electrons reveals "hidden order" Glimpse of heavy electrons reveals "hidden order" The remarkable breakthrough helps validate theory behind the observed increase...

143

Reactor component automatic grapple  

DOE Patents (OSTI)

A grapple for handling nuclear reactor components in a medium such as liquid sodium which, upon proper seating and alignment of the grapple with the component as sensed by a mechanical logic integral to the grapple, automatically seizes the component. The mechanical logic system also precludes seizure in the absence of proper seating and alignment.

Greenaway, Paul R. (Bethel Park, PA)

1982-01-01T23:59:59.000Z

144

HEAVY AND THERMAL OIL RECOVERY PRODUCTION MECHANISMS  

Science Conference Proceedings (OSTI)

This technical progress report describes work performed from July 1 through September, 2003 for the project ''Heavy and Thermal Oil Recovery Production Mechanisms,'' DE-FC26-00BC15311. In this project, a broad spectrum of research is undertaken related to thermal and heavy-oil recovery. The research tools and techniques span from pore-level imaging of multiphase fluid flow to definition of reservoir-scale features through streamline-based history-matching techniques. During this period, work focused on completing project tasks in the area of multiphase flow and rock properties. The area of interest is the production mechanisms of oil from porous media at high temperature. Temperature has a beneficial effect on oil recovery and reduces residual oil saturation. Work continued to delineate how the wettability of reservoir rock shifts from mixed and intermediate wet conditions to more water-wet conditions as temperature increases. One mechanism for the shift toward water-wet conditions is the release of fines coated with oil-wet material from pore walls. New experiments and theory illustrate the role of temperature on fines release.

Anthony R. Kovscek; Louis M. Castanier

2004-03-01T23:59:59.000Z

145

Heavy ion fusion--Using heavy ions to make electricity  

E-Print Network (OSTI)

for a practical fusion power reactor. HIF is the only fusionenter the reactor chamber, and focus Heavy Ion Fusion ontoengineering test reactor. The promise of fusion as a power

Celata, C.M.

2004-01-01T23:59:59.000Z

146

Heavy Ion Collisions at RHIC  

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

at Heavy Ion Colliders at Heavy Ion Colliders Theory Drivers & View from LHC Urs Achim Wiedemann CERN PH-TH NSAC Implementation Subcommittee Hearings 7 September 2012 Heavy Ion Physics - Main Tools of Theorists Understanding properties of hot and dense matter from the elementary interactions in QCD High Energy Physics String Theory Computational Physics Fluid Dynamics Dissipative fluid dynamic description * Based on: E-p conservation: 2 nd law of thermodynamics: * Sensitive to properties of matter that are calculated from first principles in quantum field theory - EOS: and sound velocity - transport coefficients: shear , bulk viscosity, conductivities ...

147

Component Reliability Extensions for Fractal component model  

E-Print Network (OSTI)

that the model is an abstraction and, therefore, it may represent behavior not possible in the original program. Consequently, a model checker may then find errors that are not present in the program (i.e., false negatives, a component cannot be checked in isolation because it does not form a complete program (with the main method

148

Key Issues Related to Corrosion Protection of Brackish Water and ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Stainless steel components in cooling water systems, using brackish- ... Crevice conditions produced from consolidated biofilms on component ...

149

RHIC | Relativistic Heavy Ion Collider  

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

Relativistic Heavy Ion Collider Relativistic Heavy Ion Collider Photo of LINAC The Relativistic Heavy Ion Collider (RHIC) is a world-class particle accelerator at Brookhaven National Laboratory where physicists are exploring the most fundamental forces and properties of matter and the early universe. RHIC accelerates beams of particles (e.g., the nuclei of heavy atoms such as gold) to nearly the speed of light, and smashes them together to recreate a state of matter thought to have existed immediately after the Big Bang some 13.8 billion years ago. STAR and PHENIX, two large detectors located around the 2.4-mile-circumference accelerator, take "snapshots" of these collisions to reveal a glimpse of the basic constituents of visible matter, quarks and gluons. Understanding matter at

150

The physics of heavy flavors  

SciTech Connect

We review the physics of heavy quark flavors, including weak decays, onium, tau leptons, mixing, the Kobayashi-Maskawa matrix, and CP violation in B decay. 36 refs., 12 figs.

Gilman, F.J.

1987-12-01T23:59:59.000Z

151

RHIC | Relativistic Heavy Ion Collider  

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

indicate that collisions of small particles with large gold nuclei at the Relativistic Heavy Ion Collider may be serving up miniscule servings of hot quark-gluon plasma. RHIC...

152

Relativistic Heavy Ion Collider, RHIC  

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

The Relativistic Heavy Ion Collider website has moved to www.bnl.govrhicdefault.asp Sponsored by the U.S. Department of Energy Office of Science, Office of Nuclear Physics. Last...

153

LCLS Heavy Met Outgassing Tests  

Science Conference Proceedings (OSTI)

A Heavy Met that is 95% tungsten, 3% nickel and 2% iron and sintered to 100% density and is Ultra High Vacuum (UHV) compatible is proposed for use as the X-ray slit in the Front End Enclosure and the Fixed Mask for the Linac Coherent Light Source (LCLS). The Heavy Met was tested in the LLNL Vacuum Sciences and Engineering Lab (VSEL) to determine its outgassing rate and its overall compatibility with the vacuum requirements for LCLS.

Kishiyama, K. I.

2010-12-01T23:59:59.000Z

154

Component reliability testing  

SciTech Connect

Component and system reliability of active solare energy systems continues to be a major concern of designers, manufacturers, installers, and consumers. Six test loops were constructed at the Solar Energy Research Institute in Golden, Colorado, to thermally cycle active solar energy system components. Drain valves, check valves, air vents, vacuum breakers, tempering valves, and polybutylene pipe were included in the testing. Test results show poor reliabiity of some of the components and limited performance from others. The results lead to a better understanding of certain failures in the field and present designers with realistic expectations for these components.

Farrington, R.B.

1984-03-01T23:59:59.000Z

155

Hybrid and electric advanced vehicle systems (heavy) simulation. Final report  

Science Conference Proceedings (OSTI)

A computer program to simulate hybrid and electric advanced vehicle systems (HEAVY) is described. It is intended for use early in the design process: concept evaluation, alternative comparison, preliminary design, control and management strategy development, component sizing, and sensitivity studies. It allows the designer to quickly, conveniently, and economically predict the performance of a proposed drive train. The user defines the system to be simulated using a library of predefined component models that may be connected to represent a wide variety of propulsion systems. The development of three models are discussed as examples.

Hammond, R.A.; McGehee, R.K.

1981-11-01T23:59:59.000Z

156

SRAT/SME components: Wear evaluation  

SciTech Connect

Material water of internal components in the Slurry Receipt Adjustment Tank/Slurry Mix Evaporator (SRAT/SME) has been documented. This study consisted of a special wear test of approximately 1,950 hours of simulated run time. Basic dimensions were obtained for components before the test, and they were compared with measurements taken after the exposure. Wear of tank components, the estimated life of design materials of construction, and guidance for design configuration were obtained. The test program is continuing with no basic changes in design.

Jenkins, C.F.

1987-11-16T23:59:59.000Z

157

Recovery of precious metals from military electronic components  

SciTech Connect

Sandia National Laboratories developed a process to identify and remove the hazardous sub-components from dismantled weapons components utilizing real-time radiography and abrasive water-jet cutting. The components were then crushed, granulated, screened, and separated into an aluminium and a precious-and-base-metals fraction using air-tables. Plastics were further cleaned for disposal as non- hazardous waste.

Gundiler, I.H. [New Mexico Bureau of Mines and Mineral Resources, Socorro, NM (United States); Lutz, J.D.; Neiswander, P.G.

1996-09-01T23:59:59.000Z

158

Thermal spray applications for power plant components  

Science Conference Proceedings (OSTI)

Power plants usually are located near water and many are in salt water environments. Corrosion occurring in these environments is a problem often solved with thermal spray coatings. The use of thermal spray aluminum and zinc in three power plants for various components is reviewed. Special emphasis is on the cooling tower at the Seabrook, New Hampshire plant. A guide to selection of the coating and process also is given.

Sampson, E.R.

2000-03-01T23:59:59.000Z

159

Integrating Program Component Executables  

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

Integrating Integrating Program Component Executables on Distributed Memory Architectures via MPH Chris Ding and Yun He Computational Research Division, Lawrence Berkeley National Laboratory University of California, Berkeley, CA 94720, USA chqding@lbl.gov, yhe@lbl.gov Abstract A growing trend in developing large and complex ap- plications on today's Teraflop computers is to integrate stand-alone and/or semi-independent program components into a comprehensive simulation package. One example is the climate system model which consists of atmosphere, ocean, land-surface and sea-ice. Each component is semi- independent and has been developed at different institu- tions. We study how this multi-component multi-executable application can run effectively on distributed memory archi- tectures. We identify five effective execution modes and de- velop the MPH library to support

160

RHIC | Relativistic Heavy Ion Collider  

NLE Websites -- All DOE Office Websites

Brookhaven National Laboratory Brookhaven National Laboratory search U.S. Department of Energy logo Home RHIC Science News Images Videos For Scientists Björn Schenke 490th Brookhaven Lecture, 12/18 Join Björn Schenke of Brookhaven Lab's Physics Department for the 490th Brookhaven Lecture, titled 'The Shape and Flow of Heavy Ion Collisions,' on Wednesday, Dec. 18, at 4 p.m. in Berkner Hall. droplets Tiny Drops of Hot Quark Soup-How Small Can They Be? New analyses indicate that collisions of small particles with large gold nuclei at the Relativistic Heavy Ion Collider may be serving up miniscule servings of hot quark-gluon plasma. RHIC Physics RHIC is the first machine in the world capable of colliding ions as heavy as gold. The Spin Puzzle RHIC is the world's only machine capable of colliding beams of polarized

Note: This page contains sample records for the topic "heavy water components" 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

CMVRTC: Heavy Truck Duty Cycle  

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

heavy truck duty cycle (HTDC) project heavy truck duty cycle (HTDC) project OVERVIEW The Heavy Truck Duty Cycle (HTDC) Project was initiated in 2004 and is sponsored by the US Department of Energy's (DOE's) Office of FreedomCar and Vehicle Technologies Program. ORNL designed the research program to generate real-world-based duty cycle data from trucks operating in long-haul operations and was designed to be conducted in three phases: identification of parameters to be collected, instrumentation and pilot testing, identification of a real-world fleet, design of the data collection suite and fleet instrumentation, and data collection, analysis, and development of a duty cycle generation tool (DCGT). ANL logo dana logo michelin logo Schrader logo This type of data will be useful for supporting energy efficiency

162

Jet quenching and heavy quarks  

E-Print Network (OSTI)

Jet quenching and more generally physics at high transverse momentum P_T scales is a cornerstone of the heavy-ion physics program at the LHC. In this work, the current understanding of jet quenching in terms of a QCD shower evolution being modified by the surrounding medium is reviewed along with the evidence for this picture from light parton high P_T observables. Conceptually, the same QCD shower description should also be relevant for heavy quarks, but with several important modifications introduced by the quark masses. Thus especially in the limit of small jet energy over quark mass E_jet/m_q, the relevant physics may be rather different from light quark jets, and several attempts to explain the observed phenomenology of heavy quarks at high P_T are discussed here.

Thorsten Renk

2013-09-12T23:59:59.000Z

163

Alloy Design and Thermomechanical Processing of a Beta Titanium Alloy for a Heavy Vehicle Application  

SciTech Connect

With the strength of steel, but at half the weight, titanium has the potential to offer significant benefits in the weight reduction of heavy vehicle components while possibly improving performance. However, the cost of conventional titanium fabrication is a major barrier in implementation. New reduction technologies are now available that have the potential to create a paradigm shift in the way the United States uses titanium, and the economics associated with fabrication of titanium components. This CRADA project evaluated the potential to develop a heavy vehicle component from titanium powders. The project included alloy design, development of manufacturing practices, and modeling the economics associated with the new component. New Beta alloys were designed for this project to provide the required mechanical specifications while utilizing the benefits of the new fabrication approach. Manufacturing procedures were developed specific to the heavy vehicle component. Ageing and thermal treatment optimization was performed to provide the desired microstructures. The CRADA partner established fabrication practices and targeted capital investment required for fabricating the component out of titanium. Though initial results were promising, the full project was not executed due to termination of the effort by the CRADA partner and economic trends observed in the heavy vehicle market.

Peter, William H [ORNL; Blue, Craig A [ORNL

2010-08-01T23:59:59.000Z

164

Cooling and solidification of heavy hydrocarbon liquid streams  

DOE Patents (OSTI)

A process and apparatus for cooling and solidifying a stream of heavy hydrocarbon material normally boiling above about 850.degree. F., such as vacuum bottoms material from a coal liquefaction process. The hydrocarbon stream is dropped into a liquid bath, preferably water, which contains a screw conveyor device and the stream is rapidly cooled, solidified and broken therein to form discrete elongated particles. The solid extrudates or prills are then dried separately to remove substantially all surface moisture, and passed to further usage.

Antieri, Salvatore J. (Trenton, NJ); Comolli, Alfred G. (Yardley, PA)

1983-01-01T23:59:59.000Z

165

Accelerators for heavy ion fusion  

SciTech Connect

Large fusion devices will almost certainly produce net energy. However, a successful commercial fusion energy system must also satisfy important engineering and economic constraints. Inertial confinement fusion power plants driven by multi-stage, heavy-ion accelerators appear capable of meeting these constraints. The reasons behind this promising outlook for heavy-ion fusion are given in this report. This report is based on the transcript of a talk presented at the Symposium on Lasers and Particle Beams for Fusion and Strategic Defense at the University of Rochester on April 17-19, 1985.

Bangerter, R.O.

1985-10-01T23:59:59.000Z

166

Analysis of an interwell tracer test in a depleted heavy-oil reservoir  

SciTech Connect

This paper presents field data and analyses of an interwell tracer test conducted in the Niitsu oil field, which is a fully depleted heavy-oil reservoir of unconsolidated sand formation. Water containing a chemical tracer was injected at a constant rate into an injector surrounded by three production wells. Effluent analyses showed very early breakthrough of injected water at two of the producing wells. The test results suggest a strong areal heterogeneity of the tested formation. An appropriate analytic model was used to obtain a preliminary interpretation of the results. A modified three-dimensional (3D) black-oil model developed to simulate th polymer flood process was then used for analyzing the data in more detail. The model treats tracer solution as a fourth component and can also account for adsorption of tracer. Simulation efforts were concentrated on matching the breakthrough times and tracer profiles after breakthrough. Through both the analytic and the simulation work, the reservoir is characterized by a highly heterogeneous distribution of horizontal permeability, a thin layer of high permeability, and a natural waterdrive that cause a preferential flow trend in a direction toward one producer. The authors conclude that the interwell tracer test is an effective tool for evaluating reservoir heterogeneities and a quantitative analysis of test data is done with the polymer option of a black-oil simulator.

Ohno, K.; Nanba, T.; Horne, R.N.

1987-12-01T23:59:59.000Z

167

Analysis of an interwell tracer test in a depleted heavy oilreservoir  

SciTech Connect

This paper presents field data and analyses of an interwell tracer test conducted in the Niitsu oil field which is a fully depleted heavy oil reservoir of unconsolidated sand formation. The purpose of the tracer test is to diagnose reservoir heterogeneity at a location where a micellar/ polymer field test is planned. Water containing a chemical tracer was injected at a constant rate into an injector surrounded by three production wells. Effluent analyses showed very early breakthrough of injected water at two of the producing wells, no tracer, however, was detected at the third producer thoughout the test period. In addition, tracer production profiles at two wells after breakthrough differed much from each other. These test results suggest a strong areal heterogeneity of the tested formation. An appropriate analytical model was used to obtain a preliminary interpretation of the results. A modified three-dimensional black oil model developed to simulate polymer flood process was then utilized for analyzing the data in more detail. The model treats tracer solution as a fourth component, and can also account for adsorption of tracer.

Ohno, K.; Horne, R.N.; Nanba, T.

1985-03-01T23:59:59.000Z

168

Predicting tarmat response to water injection  

Science Conference Proceedings (OSTI)

Tarmat (heavy oil at the oil-water contact) in a reservoir acts as a sealing barrier, and thus its behavior during a waterflood will affect overall oil recovery. Here's how to predict that behavior.

Osman, M.E.S. (Univ. of United Arab Emirates, Al-Ain, Abu Dhabi (AE))

1991-07-01T23:59:59.000Z

169

Assessing the potential and limitations of heavy oil upgrading by electron beam irradiation  

E-Print Network (OSTI)

Radiation technology can economically overcome principal problems of heavy oil processing arising from heavy oil�s unfavorable physical and chemical properties. This technology promises to increase considerably yields of valuable and environmentally satisfying products of thermal cracking; to simplify complexity of refinery configuration; and to reduce energy expenses of thermal cracking. Objectives of the present study are: � Evaluate heavy oil viscosities with respect to absorbed dose and effect of different solvents on the viscosity of irradiated crude oil by comparing selected physical properties of irradiated samples to a non-irradiated control group; � Investigate effect of e-beam radiation on the yields of light fractions comparing yields of radiation-thermal cracking to yields of conventional thermal cracking. The viscosity was used as an indicator of the change in the molecular structure of hydrocarbons upon irradiation. We found that the irradiation of pure oil leads to the increase of the molecular weight calculated from the Riazi-Daubert correlation. Thus, irradiation up to 10 kGy resulted in a 1.64% increase in the molecular weight, 20 kGy � 4.35% and 30 kGy � 3.28%. It was found that if irradiated oil was stored for 17 days, its viscosity increased by 14% on average. The irradiation of samples with added organic solvent in the following weight percentages 10, 5, 2.5wt.% resulted in the increase in the viscosity by 3.3, 3.6 and 14.5%, respectively. The irradiation of the sample with added distilled water also resulted in an increase in the viscosity. This increase mainly happened because the thermal component was absent in the activation energy and hydrogen, produced from radiolysis of solvent and water molecules in mixture with crude oil, and was not consumed by hydrocarbon molecules and no reduction in molecular size occurred. Implementation of radiation to the thermal cracking increased yields of light fractions by 35wt.% on average compared to the process where no radiation was present. The last chapter of this thesis discusses a profitability of installation the hypothetical radiation-thermal visbreaking unit. The calculation of profitability was performed by a rate of return on investment (ROI) method. It showed that implementation of radiation-thermal processing resulted in an increase of ROI from 16 to 60%.

Zhussupov, Daniyar

2006-12-01T23:59:59.000Z

170

RESEARCH OIL RECOVERY MECHANISMS IN HEAVY OIL RESERVOIRS  

SciTech Connect

The United States continues to rely heavily on petroleum fossil fuels as a primary energy source, while domestic reserves dwindle. However, so-called heavy oil (10 to 20{sup o}API) remains an underutilized resource of tremendous potential. Heavy oils are much more viscous than conventional oils. As a result, they are difficult to produce with conventional recovery methods such as pressure depletion and water injection. Thermal recovery is especially important for this class of reservoirs because adding heat, usually via steam injection, generally reduces oil viscosity dramatically. This improves displacement efficiency. The research described here was directed toward improved understanding of thermal and heavy-oil production mechanisms and is categorized into: (1) flow and rock properties; (2) in-situ combustion; (3) additives to improve mobility control; (4) reservoir definition; and (5) support services. The scope of activities extended over a three-year period. Significant work was accomplished in the area of flow properties of steam, water, and oil in consolidated and unconsolidated porous media, transport in fractured porous media, foam generation and flow in homogeneous and heterogeneous porous media, the effects of displacement pattern geometry and mobility ratio on oil recovery, and analytical representation of water influx. Significant results are described.

Anthony R. Kovscek; William E. Brigham

1999-06-01T23:59:59.000Z

171

Conventional Storage Water Heater Basics | Department of Energy  

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

Conventional Storage Water Heater Basics Conventional Storage Water Heater Basics July 30, 2013 - 3:39pm Addthis Illustration showing the components of a storage water heater. On...

172

Energy Basics: Microhydropower Water Conveyance and Filters  

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

These components include the headrace, forebay, and water conveyance (or channel, pipeline, or penstock). The headrace is a waterway that runs parallel to the water source. A...

173

Water, Energy, and Climate Change in California  

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

change on water and energy prices, (3) evaluate the likely direction and magnitude of price effects on selected components of the water system and (4) suggest priority research...

174

Hadron Production in Heavy Ion Collisions  

E-Print Network (OSTI)

2A GeV 3 Hadron Production from AGS to RHIC 3.1 SystematicsHadron Production in Heavy Ion Collisions Hans Georg RitterAC02- 05CH11231. Hadron Production in Heavy Ion Collisions

Ritter, Hans Georg

2009-01-01T23:59:59.000Z

175

Heavy Vehicle and Engine Resource Guide  

DOE Green Energy (OSTI)

The Heavy Vehicle and Engine Resource Guide is a catalog of medium- and heavy-duty engines and vehicles with alternative fuel and advanced powertrain options. This edition covers model year 2003 engines and vehicles.

Not Available

2004-03-01T23:59:59.000Z

176

Proton Distribution in Heavy Nuclei  

DOE R&D Accomplishments (OSTI)

It is reasoned that, from considerations connected with beta-decay stability and Coulomb repulsion forces, a neutron excess is developed on the surface of heavy nuclei. Several consequences of this qualitative analysis in nucleon interactions are briefly noted. (K.S.)

Johnson, M. H; Teller, E.

1953-11-13T23:59:59.000Z

177

Summary of the Heavy Flavours Working Group  

E-Print Network (OSTI)

This is a summary of the contributions presented in the Heavy Flavours Working Group of the DIS2006 Workshop.

U. Karshon; I. Schienbein; P. Thompson

2006-08-10T23:59:59.000Z

178

Light-Heavy Price Difference Varies  

U.S. Energy Information Administration (EIA)

Light-Heavy Price Difference Varies ; Function of Crude Market Factors ; Function of Conversion Capacity ; Function of Product Market Factors

179

Oklahoma Refinery Catalytic Hydrotreating, Heavy Gas Oil ...  

U.S. Energy Information Administration (EIA)

Cat. Hydro. Heavy Gas Oil Downstream Charge Capacity (B/SD)y ; Oklahoma Downstream Charge Capacity of Operable Petroleum Refineries ...

180

Heavy Vehicle and Engine Resource Guide  

DOE Green Energy (OSTI)

A comprehensive product catalog of medium and heavy-duty engines and vehicles with alternative fuel and advanced powertrain options.

Not Available

2001-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Mississippi Refinery Catalytic Hydrotreating, Heavy Gas Oil ...  

U.S. Energy Information Administration (EIA)

Cat. Hydro. Heavy Gas Oil Downstream Charge Capacity (B/SD)y ; Mississippi Downstream Charge Capacity of Operable Petroleum Refineries ...

182

Research on oil recovery mechanisms in heavy oil reservoirs  

Science Conference Proceedings (OSTI)

The research described here was directed toward improved understanding of thermal and heavy-oil production mechanisms and is categorized into: (1) flow and rock properties, (2) in-situ combustion, (3) additives to improve mobility control, (4) reservoir definition, and (5) support services. The scope of activities extended over a three-year period. Significant work was accomplished in the area of flow properties of steam, water, and oil in consolidated and unconsolidated porous media, transport in fractured porous media, foam generation and flow in homogeneous and heterogeneous porous media, the effects of displacement pattern geometry and mobility ratio on oil recovery, and analytical representation of water influx.

Kovscek, Anthony R.; Brigham, William E., Castanier, Louis M.

2000-03-16T23:59:59.000Z

183

HYDROGEN PIPELINE COMPONENTS  

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

power generation, about one-half for agriculture, and the remainder for domestic use (McKinsey & Company 2009). (For comparison, total water withdrawals in the United States in...

184

Plant for producing an oxygen-containing additive as an ecologically beneficial component for liquid motor fuels  

DOE Patents (OSTI)

A plant for producing an oxygen-containing additive for liquid motor fuels comprises an anaerobic fermentation vessel, a gasholder, a system for removal of sulphuretted hydrogen, and a hotwell. The plant further comprises an aerobic fermentation vessel, a device for liquid substance pumping, a device for liquid aeration with an oxygen-containing gas, a removal system of solid mass residue after fermentation, a gas distribution device; a device for heavy gases utilization; a device for ammonia adsorption by water; a liquid-gas mixer; a cavity mixer, a system that serves superficial active and dispersant matters and a cooler; all of these being connected to each other by pipelines. The technical result being the implementation of a process for producing an oxygen containing additive, which after being added to liquid motor fuels, provides an ecologically beneficial component for motor fuels by ensuring the stability of composition fuel properties during long-term storage.

Siryk, Yury Paul; Balytski, Ivan Peter; Korolyov, Volodymyr George; Klishyn, Olexiy Nick; Lnianiy, Vitaly Nick; Lyakh, Yury Alex; Rogulin, Victor Valery

2013-04-30T23:59:59.000Z

185

Ceramic component for electrodes  

SciTech Connect

A ceramic component suitable for preparing MHD generator electrodes having the compositional formula: Y.sub.x (Mg.sub.y Cr.sub.z).sub.w Al.sub.(1-w) O.sub.3 where x=0.9 to 1.05, y=0.02 to 0.2, z=0.8 to 1.05 and w=1.0 to 0.5. The component is resistant to the formation of hydration products in an MHD environment, has good electrical conductivity and exhibits a lower electrochemical corrosion rate than do comparable compositions of lanthanum chromite.

Marchant, David D. (Richland, WA); Bates, J. Lambert (Richland, WA)

1980-01-01T23:59:59.000Z

186

Components in the Pipeline  

Science Conference Proceedings (OSTI)

Scientists commonly describe their data processing systems metaphorically as software pipelines. These pipelines input one or more data sources and apply a sequence of processing steps to transform the data and create useful results. While conceptually simple, pipelines often adopt complex topologies and must meet stringent quality of service requirements that place stress on the software infrastructure used to construct the pipeline. In this paper we describe the MeDICi Integration Framework, which is a component-based framework for constructing complex software pipelines. The framework supports composing pipelines from distributed heterogeneous software components and provides mechanisms for controlling qualities of service to meet demanding performance, reliability and communication requirements.

Gorton, Ian; Wynne, Adam S.; Liu, Yan (Jenny); Yin, Jian

2011-02-24T23:59:59.000Z

187

Mechanical cutting of irradiated reactor internal components  

Science Conference Proceedings (OSTI)

Mechanical cutting methods to volume reduce and package reactor internal components are now a viable solution for stakeholders challenged with the retirement of first generation nuclear facilities. The recent completion of the removal of the Reactor Vessel Internals (RVI) from within the Sacramento Municipal Utility District's (SMUD) Rancho Seco Nuclear Power Plant demonstrates that unlike previous methods, inclusive of plasma arc and abrasive water-jet cutting, mechanical cutting minimizes exposure to workers, costly water cleanup, and excessive secondary waste generation. Reactor internal components were segmented, packaged, and removed from the reactor building for shipment or storage, allowing the reactor cavity to be drained and follow-on reactor segmentation activities to proceed in the dry state. Area exposure rates at the work positions during the segmentation process were generally 1 mR per hr. Radiological exposure documented for the underwater segmentation processes totaled 13 person rem. The reactor internals weighing 343,000 pounds were segmented into over 200 pieces for maximum shipping package efficiency and produced 5,600 lb of stainless steel chips and shavings which were packaged in void spaces of existing disposal containers, therefore creating no additional disposal volume. Because no secondary waste was driven into suspension in the reactor cavity water, the water was free released after one pass through a charcoal bed and ion exchange filter system. Mechanical cutting techniques are capable of underwater segmentation of highly radioactive components on a large scale. This method minimized radiological exposure and costly water cleanup while creating no secondary waste.

Anderson, Michael G. [MOTA Corporation: 3410 Sunset Boulevard, West Columbia, SC, 29169 (United States)

2008-01-15T23:59:59.000Z

188

Heavy Tails: Performance Models and Scheduling Disciplines  

E-Print Network (OSTI)

Heavy Tails: Performance Models and Scheduling Disciplines Sindo N´u~nez-Queija based on joint ITC´u~nez-Queija CWI & TU/e #12;Heavy Tails: Performance Models and Scheduling Disciplines Part I ­ Introduction and Methodology Tales to tell: · traffic measurements and statistical analysis · traffic modeling · heavy

Núñez-Queija, Rudesindo

189

Finding Interesting Correlations with Conditional Heavy Hitters  

E-Print Network (OSTI)

Finding Interesting Correlations with Conditional Heavy Hitters Katsiaryna Mirylenka, Themis Srivastava AT&T Labs, Florham Park, NJ, USA {graham, divesh}@research.att.com Abstract-- The notion of heavy of Conditional Heavy Hitters to identify such items, with applications in network monitoring, and Markov chain

Palpanas, Themis

190

Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks  

DOE Green Energy (OSTI)

The Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks program (DE-FC26-04NT42189), commonly referred to as the AES program, focused on areas that will primarily benefit fuel economy and improve heat rejection while driving over the road. The AES program objectives were to: (1) Analyze, design, build, and test a cooling system that provided a minimum of 10 percent greater heat rejection in the same frontal area with no increase in parasitic fan load. (2) Realize fuel savings with advanced power management and acceleration assist by utilizing an integrated starter/generator (ISG) and energy storage devices. (3) Quantify the effect of aerodynamic drag due to the frontal shape mandated by the area required for the cooling system. The program effort consisted of modeling and designing components for optimum fuel efficiency, completing fabrication of necessary components, integrating these components into the chassis test bed, completing controls programming, and performance testing the system both on a chassis dynamometer and on the road. Emission control measures for heavy-duty engines have resulted in increased engine heat loads, thus introducing added parasitic engine cooling loads. Truck electrification, in the form of thermal management, offers technological solutions to mitigate or even neutralize the effects of this trend. Thermal control offers opportunities to avoid increases in cooling system frontal area and forestall reduced fuel economy brought about by additional aerodynamic vehicle drag. This project explored such thermal concepts by installing a 2007 engine that is compliant with current regulations and bears additional heat rejection associated with meeting these regulations. This newer engine replaced the 2002 engine from a previous project that generated less heat rejection. Advanced power management, utilizing a continuously optimized and controlled power flow between electric components, can offer additional fuel economy benefits to the heavy-duty trucking industry. Control software for power management brings added value to the power distribution and energy storage architecture on board a truck with electric accessories and an ISG. The research team has built upon a previous truck electrification project, formally, 'Parasitic Energy Loss Reduction and Enabling Technologies for Class 7/8 Trucks', DE-FC04-2000AL6701, where the fundamental concept of electrically-driven accessories replacing belt/gear-driven accessories was demonstrated on a Kenworth T2000 truck chassis. The electrical accessories, shown in Figure 1, were controlled to provide 'flow on demand' variable-speed operation and reduced parasitic engine loads for increased fuel economy. These accessories also provided solutions for main engine idle reduction in long haul trucks. The components and systems of the current project have been integrated into the same Kenworth T2000 truck platform. Reducing parasitic engine loading by decoupling accessory loads from the engine and driving them electrically has been a central concept of this project. Belt or gear-driven engine accessories, such as water pump, air conditioning compressor, or air compressor, are necessarily tied to the engine speed dictated by the current vehicle operating conditions. These conventional accessory pumps are sized to provide adequate flow or pressure at low idle or peak torque speeds, resulting in excess flow or pressure at cruising or rated speeds. The excess flow is diverted through a pressure-minimizing device such as a relief valve thereby expending energy to drive unnecessary and inefficient pump operation. This inefficiency causes an increased parasitic load to the engine, which leads to a loss of usable output power and decreased fuel economy. Controlling variable-speed electric motors to provide only the required flow or pressure of a particular accessory system can yield significant increases in fuel economy for a commercial vehicle. Motor loads at relatively high power levels (1-5 kW, or higher) can be efficiently provided

Larry Slone; Jeffrey Birkel

2007-10-31T23:59:59.000Z

191

Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks  

Science Conference Proceedings (OSTI)

The Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks program (DE-FC26-04NT42189), commonly referred to as the AES program, focused on areas that will primarily benefit fuel economy and improve heat rejection while driving over the road. The AES program objectives were to: (1) Analyze, design, build, and test a cooling system that provided a minimum of 10 percent greater heat rejection in the same frontal area with no increase in parasitic fan load. (2) Realize fuel savings with advanced power management and acceleration assist by utilizing an integrated starter/generator (ISG) and energy storage devices. (3) Quantify the effect of aerodynamic drag due to the frontal shape mandated by the area required for the cooling system. The program effort consisted of modeling and designing components for optimum fuel efficiency, completing fabrication of necessary components, integrating these components into the chassis test bed, completing controls programming, and performance testing the system both on a chassis dynamometer and on the road. Emission control measures for heavy-duty engines have resulted in increased engine heat loads, thus introducing added parasitic engine cooling loads. Truck electrification, in the form of thermal management, offers technological solutions to mitigate or even neutralize the effects of this trend. Thermal control offers opportunities to avoid increases in cooling system frontal area and forestall reduced fuel economy brought about by additional aerodynamic vehicle drag. This project explored such thermal concepts by installing a 2007 engine that is compliant with current regulations and bears additional heat rejection associated with meeting these regulations. This newer engine replaced the 2002 engine from a previous project that generated less heat rejection. Advanced power management, utilizing a continuously optimized and controlled power flow between electric components, can offer additional fuel economy benefits to the heavy-duty trucking industry. Control software for power management brings added value to the power distribution and energy storage architecture on board a truck with electric accessories and an ISG. The research team has built upon a previous truck electrification project, formally, 'Parasitic Energy Loss Reduction and Enabling Technologies for Class 7/8 Trucks', DE-FC04-2000AL6701, where the fundamental concept of electrically-driven accessories replacing belt/gear-driven accessories was demonstrated on a Kenworth T2000 truck chassis. The electrical accessories, shown in Figure 1, were controlled to provide 'flow on demand' variable-speed operation and reduced parasitic engine loads for increased fuel economy. These accessories also provided solutions for main engine idle reduction in long haul trucks. The components and systems of the current project have been integrated into the same Kenworth T2000 truck platform. Reducing parasitic engine loading by decoupling accessory loads from the engine and driving them electrically has been a central concept of this project. Belt or gear-driven engine accessories, such as water pump, air conditioning compressor, or air compressor, are necessarily tied to the engine speed dictated by the current vehicle operating conditions. These conventional accessory pumps are sized to provide adequate flow or pressure at low idle or peak torque speeds, resulting in excess flow or pressure at cruising or rated speeds. The excess flow is diverted through a pressure-minimizing device such as a relief valve thereby expending energy to drive unnecessary and inefficient pump operation. This inefficiency causes an increased parasitic load to the engine, which leads to a loss of usable output power and decreased fuel economy. Controlling variable-speed electric motors to provide only the required flow or pressure of a particular accessory system can yield significant increases in fuel economy for a commercial vehicle. Motor loads at relatively high power levels (1-5 kW, or higher) can be efficiently provided

Larry Slone; Jeffrey Birkel

2007-10-31T23:59:59.000Z

192

HEAVY BARYONS: A COMBINED LARGE Nc AND HEAVY QUARK EXPANSION FOR ELECTROWEAK CURRENTS  

E-Print Network (OSTI)

The combined large Nc and heavy quark limit for baryons containing a single heavy quark is discussed. The combined large Nc and heavy quark expansion of the heavy quark bilinear operators is obtained. In the combined expansion the corrections proportional to mN/mQ are summed to all orders. In particular, the combined expansion can be used to determine semileptonic form factors of heavy baryons in the combined limit. 1

Boris A. Gelman

2002-01-01T23:59:59.000Z

193

Heavy Vehicle Propulsion Materials: Recent Progress and Future Plans  

DOE Green Energy (OSTI)

The Heavy Vehicle Propulsion Materials Program provides enabling materials technology for the U.S. DOE Office of Heavy Vehicle Technologies (OHVT). The technical agenda for the program is based on an industry assessment and the technology roadmap for the OHVT. A five-year program plan was published in 2000. Major efforts in the program are materials for diesel engine fuel systems, exhaust aftertreatment, and air handling. Additional efforts include diesel engine valve-train materials, structural components, and thermal management. Advanced materials, including high-temperature metal alloys, intermetallics, cermets, ceramics, amorphous materials, metal- and ceramic-matrix composites, and coatings, are investigated for critical engine applications. Selected technical issues and planned and ongoing projects as well as brief summaries of several technical highlights are given.

D. Ray Johnson; Sidney Diamond

2001-05-14T23:59:59.000Z

194

Decontamination of large components-test case  

SciTech Connect

The rising per-cubic-foot burial costs, together with the trend toward standardized above-ground burial sites, provides the basis for seeking an alternative to direct burial of large components. Large contaminated components such as steam generators can be safely dismantled and decontaminated for free release, metals recycle, and volume reduction. This grand-scale disposal technology will prove to be an economical and ecological alternative to direct burial or interim storage. Yankee Atomic Electric Company (YAEC) in Bolton, operators and decommissioners of the Yankee Nuclear Power Station in Rowe, Massachusetts, has teamed with Frank W Hake Associates in Memphis, TN, to decontaminate a large component as a test case. The large component is YAEC`s reactor pressure vessel head (RPVH). The 79 100 lb RPVH is surface contaminated with 0.7 Ci (1500 mR/h contact) resulting from 32 yr of operating in a 2000 psi, 530{degrees}F pressurized water reactor environment.

Mancini, A. [Yankee Atomic Electric Co., Bolton, MA (United States); Bosco, B. [Frank W. Hake Associates, Memphis, TN (United States)

1996-12-31T23:59:59.000Z

195

Bounds on Heavy-to-Heavy Weak Decay Form Factors  

E-Print Network (OSTI)

We provide upper and lower bounds on the semileptonic weak decay form factors for $B \\to D^(*)$ and $\\Lambda_b \\to \\Lambda_c$ decays by utilizing inclusive heavy quark effective theory sum rules. These bounds are calculated to second order in $\\Lambda_{QCD}/m_Q$ and first order in $\\alpha_s$. The $O(\\alpha_s^2 \\beta_0)$ corrections to the bounds at zero recoil are also presented.

Chiang, C W

2001-01-01T23:59:59.000Z

196

Bounds on Heavy-to-Heavy Weak Decay Form Factors  

E-Print Network (OSTI)

We provide upper and lower bounds on the semileptonic weak decay form factors for $B \\to D^(*)$ and $\\Lambda_b \\to \\Lambda_c$ decays by utilizing inclusive heavy quark effective theory sum rules. These bounds are calculated to second order in $\\Lambda_{QCD}/m_Q$ and first order in $\\alpha_s$. The $O(\\alpha_s^2 \\beta_0)$ corrections to the bounds at zero recoil are also presented.

Cheng-Wei Chiang

2000-09-18T23:59:59.000Z

197

Bounds on Heavy-to-Heavy Baryonic Form Factors  

E-Print Network (OSTI)

Upper and lower bounds are established on the Lambda_b -> Lambda_c semileptonic decay form factors by utilizing inclusive heavy-quark-effective-theory sum rules. These bounds are calculated to leading order in Lambda_QCD/m_Q and alpha_s. The O(alpha_s^2 beta_0) corrections to the bounds at zero recoil are also presented. Several form factor models used in the literature are compared with our bounds.

Cheng-Wei Chiang

1999-07-29T23:59:59.000Z

198

Bounds on Heavy-to-Heavy Baryonic Form Factors  

E-Print Network (OSTI)

Upper and lower bounds are established on the Lambda_b -> Lambda_c semileptonic decay form factors by utilizing inclusive heavy-quark-effective-theory sum rules. These bounds are calculated to leading order in Lambda_QCD/m_Q and alpha_s. The O(alpha_s^2 beta_0) corrections to the bounds at zero recoil are also presented. Several form factor models used in the literature are compared with our bounds.

Chiang, C W

2000-01-01T23:59:59.000Z

199

Heavy flavor production from photons and hadrons  

Science Conference Proceedings (OSTI)

The present state of the production and observation of hadrons containing heavy quarks or antiquarks as valence constituents, in reactions initiated by real and (space-like) virtual photon or by hadron beams is discussed. Heavy flavor production in e/sup +/e/sup -/ annihilation, which is well covered in a number of recent review papers is not discussed, and similarly, neutrino production is omitted due to the different (flavor-changing) mechanisms that are involved in those reactions. Heavy flavors from spacelike photons, heavy flavors from real photons, and heavy flavors from hadron-hadron collisions are discussed. (WHK)

Heusch, C.A.

1982-01-01T23:59:59.000Z

200

Feasibility study of heavy oil recovery in the Appalachian, Black Warrior, Illinois, and Michigan basins  

Science Conference Proceedings (OSTI)

This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production. Each report covers select areas of the United States. The Appalachian, Black Warrior, Illinois, and Michigan basins cover most of the depositional basins in the Midwest and Eastern United States. These basins produce sweet, paraffinic light oil and are considered minor heavy oil (10{degrees} to 20{degrees} API gravity or 100 to 100,000 cP viscosity) producers. Heavy oil occurs in both carbonate and sandstone reservoirs of Paleozoic Age along the perimeters of the basins in the same sediments where light oil occurs. The oil is heavy because escape of light ends, water washing of the oil, and biodegradation of the oil have occurred over million of years. The Appalachian, Black Warrior, Illinois, and Michigan basins' heavy oil fields have produced some 450,000 bbl of heavy oil of an estimated 14,000,000 bbl originally in place. The basins have been long-term, major light-oil-producing areas and are served by an extensive pipeline network connected to refineries designed to process light sweet and with few exceptions limited volumes of sour or heavy crude oils. Since the light oil is principally paraffinic, it commands a higher price than the asphaltic heavy crude oils of California. The heavy oil that is refined in the Midwest and Eastern US is imported and refined at select refineries. Imports of crude of all grades accounts for 37 to >95% of the oil refined in these areas. Because of the nature of the resource, the Appalachian, Black Warrior, Illinois and Michigan basins are not expected to become major heavy oil producing areas. The crude oil collection system will continue to degrade as light oil production declines. The demand for crude oil will increase pipeline and tanker transport of imported crude to select large refineries to meet the areas' liquid fuels needs.

Olsen, D.K.; Rawn-Schatzinger, V.; Ramzel, E.B.

1992-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Feasibility study of heavy oil recovery in the Appalachian, Black Warrior, Illinois, and Michigan basins  

SciTech Connect

This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production. Each report covers select areas of the United States. The Appalachian, Black Warrior, Illinois, and Michigan basins cover most of the depositional basins in the Midwest and Eastern United States. These basins produce sweet, paraffinic light oil and are considered minor heavy oil (10{degrees} to 20{degrees} API gravity or 100 to 100,000 cP viscosity) producers. Heavy oil occurs in both carbonate and sandstone reservoirs of Paleozoic Age along the perimeters of the basins in the same sediments where light oil occurs. The oil is heavy because escape of light ends, water washing of the oil, and biodegradation of the oil have occurred over million of years. The Appalachian, Black Warrior, Illinois, and Michigan basins` heavy oil fields have produced some 450,000 bbl of heavy oil of an estimated 14,000,000 bbl originally in place. The basins have been long-term, major light-oil-producing areas and are served by an extensive pipeline network connected to refineries designed to process light sweet and with few exceptions limited volumes of sour or heavy crude oils. Since the light oil is principally paraffinic, it commands a higher price than the asphaltic heavy crude oils of California. The heavy oil that is refined in the Midwest and Eastern US is imported and refined at select refineries. Imports of crude of all grades accounts for 37 to >95% of the oil refined in these areas. Because of the nature of the resource, the Appalachian, Black Warrior, Illinois and Michigan basins are not expected to become major heavy oil producing areas. The crude oil collection system will continue to degrade as light oil production declines. The demand for crude oil will increase pipeline and tanker transport of imported crude to select large refineries to meet the areas` liquid fuels needs.

Olsen, D.K.; Rawn-Schatzinger, V.; Ramzel, E.B.

1992-07-01T23:59:59.000Z

202

Integrity of neutron-absorbing components of LWR fuel systems  

Science Conference Proceedings (OSTI)

A study of the integrity and behavior of neutron-absorbing components of light-water (LWR) fuel systems was performed by Pacific Northwest Laboratory (PNL) and sponsored by the US Department of Energy (DOE). The components studies include control blades (cruciforms) for boiling-water reactors (BWRs) and rod cluster control assemblies for pressurized-water reactors (PWRs). The results of this study can be useful for understanding the degradation of neutron-absorbing components and for waste management planning and repository design. The report includes examples of the types of degradation, damage, or failures that have been encountered. Conclusions and recommendations are listed. 84 refs.

Bailey, W.J.; Berting, F.M.

1991-03-01T23:59:59.000Z

203

Transmutation rates in the annulus gas of pressure tube water reactors.  

E-Print Network (OSTI)

??CANDU (CANada Deuterium Uranium) reactor utilizes Pressure Tube (PT) fuel channel design and heavy water as a coolant. Fuel channel annulus gas acts as an… (more)

Ahmad, Mohammad Mateen

2011-01-01T23:59:59.000Z

204

BNL CRCR LEAF Components  

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

A detailed description of the LEAF facility is given in Rev. Sci. Inst. 75, A detailed description of the LEAF facility is given in Rev. Sci. Inst. 75, 4359-4366 (2004), which can be found by following this link. Accelerator System Components The LEAF facility layout indicates the locations of the laser system, the RF components, the electron gun and the beam lines. RF System The modulator cabinet and S-band (2.856 GHz) klystron are located in the laser room. A copper waveguide carries the 15 MW RF pulse from the klystron to the electron gun in the accelerator vault. (A klystron is a high-power RF amplifier. You can visit the ALS MicroWorlds site for more information on klystrons and the principles of RF particle acceleration.) Electron Gun Accelerator and Beam Line 5 psec beam line The electron gun (link to picture) is located in the southwest corner of

205

Component for thermoelectric generator  

DOE Patents (OSTI)

In a thermoelectric generator, a component comprises a ceramic insulator, having over limited areas thereof, each area corresponding to a terminal end of thermoelectric wires, a coating of a first metal which adheres to the insulator, and an electrical thermoelectric junction including a second metal which wets said first metal and adheres to said terminal ends but does not wet said insulator, and a cloth composed of electrically insulating threads interlaced with thermoelectric wires.

Purdy, David L. (Indiana, PA)

1977-01-01T23:59:59.000Z

206

What's In My Water?  

E-Print Network (OSTI)

You can learn about the quality of your water by sending a sample to a laboratory for analysis. This publication will help you understand the lab report by explaining the properties, components and contaminants often found in water. It describes the sources of water contaminants, problems that can be caused by those contaminants, suggestions for correcting problems, and the safe levels of each contaminant in water for household use, for irrigation and for livestock.

Provin, Tony; Pitt, John L.

2003-04-21T23:59:59.000Z

207

A model for improvement of water heating heat exchanger designs for residential heat pump water heaters.  

E-Print Network (OSTI)

??Heat pump water heaters are a promising technology to reduce energy use and greenhouse gas emissions. A key component is the water heating heat exchanger.… (more)

Weerawoot, Arunwattana

2010-01-01T23:59:59.000Z

208

Situ formation of apatite for sequestering radionuclides and heavy metals  

DOE Patents (OSTI)

Methods for in situ formation in soil of a permeable reactive barrier or zone comprising a phosphate precipitate, such as apatite or hydroxyapatite, which is capable of selectively trapping and removing radionuclides and heavy metal contaminants from the soil, while allowing water or other compounds to pass through. A preparation of a phosphate reagent and a chelated calcium reagent is mixed aboveground and injected into the soil. Subsequently, the chelated calcium reagent biodegrades and slowly releases free calcium. The free calcium reacts with the phosphate reagent to form a phosphate precipitate. Under the proper chemical conditions, apatite or hydroxyapatite can form. Radionuclide and heavy metal contaminants, including lead, strontium, lanthanides, and uranium are then selectively sequestered by sorbing them onto the phosphate precipitate. A reducing agent can be added for reduction and selective sequestration of technetium or selenium contaminants.

Moore, Robert C. (Edgewood, NM)

2003-07-15T23:59:59.000Z

209

Investigation of the condition of spent-fuel pool components  

Science Conference Proceedings (OSTI)

It is currently projected that spent nuclear fuel, which is discharged from the reactor and then stored in water pools, may remain in those pools for several decades. Other studies have addressed the expected integrity of the spent fuel during extended water storage; this study assesses the integrity of metallic spent fuel pool components. Results from metallurgical examinations of specimens taken from stainless steel and aluminum components exposed in spent fuel pools are presented. Licensee Event Reports (LERs) relating to problems with spent fuel components were assessed and are summarized to define the types of operational problems that have occurred. The major conclusions of this study are: aluminum and stainless steel spent fuel pool components have a good history of performance in both deionized and borated water pools. Although some operational problems involving pool components have occurred, these problems have had minimal impacts.

Kustas, F.M.; Bates, S.O.; Opitz, B.E.; Johnson, A.B. Jr.; Perez, J.M. Jr.; Farnsworth, R.K.

1981-09-01T23:59:59.000Z

210

SIGNAL GROUPING FOR CONDITION MONITORING OF NUCLEAR POWER PLANT COMPONENTS  

E-Print Network (OSTI)

SIGNAL GROUPING FOR CONDITION MONITORING OF NUCLEAR POWER PLANT COMPONENTS Piero Baraldi between those used to monitor the reactor coolant pump of a Pressurized Water Reactor (PWR) is considered Monitoring, Empirical Modeling, Power Plants, Safety Critical Nuclear Instrumentation, Autoassociative models

211

Induction Linac Systems Experiments for heavy ion fusion  

Science Conference Proceedings (OSTI)

The Lawrence Berkeley Laboratory and the Lawrence Livermore National Laboratory propose to build at LBL the Induction Linac Systems Experiments (ILSE), the next logical step toward the eventual goal of a heavy ion induction accelerator powerful enough to implode or drive inertial confinement fusion targets. Though much smaller than a driver, ILSE will be at full driver scale in several important parameters. Nearly all accelerator components and beam manipulations required for a driver will be tested. It is expected that ILSE will be built in stages as funds and technical progress allow. The first stage, called Elise will include all of the electrostatic quadrupole focused parts of ILSE.

Herrmannsfeldt, W.B. [Stanford Linear Accelerator Center, Menlo Park, CA (United States); Bangerter, R.O. [Lawrence Berkeley Lab., CA (United States). Accelerator and Fusion Research Div.

1994-06-01T23:59:59.000Z

212

Efficient independent component analysis  

E-Print Network (OSTI)

Independent component analysis (ICA) has been widely used for blind source separation in many fields such as brain imaging analysis, signal processing and telecommunication. Many statistical techniques based on M-estimates have been proposed for estimating the mixing matrix. Recently several nonparametric methods have been developed but in-depth analysis on asymptotic efficiency has not been available. We analyze ICA using semiparametric theories and propose a straightforward estimate based on the efficient score function by using B-spline approximations. The estimate is asymptotically efficient under moderate conditions and exhibits better performance than standard ICA methods in a variety of simulations.

Chen, Aiyou

2006-01-01T23:59:59.000Z

213

Adaptive kernel principal component analysis  

Science Conference Proceedings (OSTI)

An adaptive kernel principal component analysis (AKPCA) method, which has the flexibility to accurately track the kernel principal components (KPC), is presented. The contribution of this paper may be divided into two parts. First, KPC are recursively ... Keywords: Adaptive method, Kernel principal component, Kernel principal component analysis, Non-stationary data, Recursive algorithm

Mingtao Ding; Zheng Tian; Haixia Xu

2010-05-01T23:59:59.000Z

214

Conventional Storage Water Heaters | Department of Energy  

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

Conventional Storage Water Heaters Conventional Storage Water Heaters July 30, 2013 - 3:39pm Addthis Illustration showing the components of a storage water heater. On top of the...

215

Heavy-Ion Physics with CMS  

E-Print Network (OSTI)

This article presents a brief overview of the CMS experiment capabilities to study the hot and dense matter created in relativistic heavy-ion collisions. The CERN Large Hadron Collider will provide collisions of Pb nuclei at 5.5 TeV per nucleon. The CMS heavy ion group has developed a plethora of physics analyses addressing many important aspects of heavy-ion physics in preparation for a competitive and successful program.

Aneta Iordanova

2008-06-06T23:59:59.000Z

216

Mechanical Cutting of Irradiated Reactor Internal Components  

SciTech Connect

This paper discusses the use of mechanical cutting methods to volume reduce and package irradiated reactor internal components. The recent completion of the removal of the Reactor Vessel Internals (RVI) from within the Sacramento Municipal Utility District's (SMUD) Rancho Seco Nuclear Power Plant demonstrates that unlike previous methods used for similar projects, mechanical cutting minimizes exposure to workers, costly water cleanup, and excessive secondary waste generation. (authors)

Anderson, M.G.; Fennema, J.A. [MOTA Corporation, West Columbia, SC (United States)

2007-07-01T23:59:59.000Z

217

Heavy ions and string theory  

E-Print Network (OSTI)

We review a selection of recent developments in the application of ideas of string theory to heavy ion physics. Our topics divide naturally into equilibrium and non-equilibrium phenomena. On the non-equilibrium side, we discuss generalizations of Bjorken flow, numerical simulations of black hole formation in asymptotically anti-de Sitter geometries, equilibration in the dual field theory, and hard probes. On the equilibrium side, we summarize improved holographic QCD, extraction of transport coefficients, inclusion of chemical potentials, and approaches to the phase diagram. We close with some possible directions for future research.

Oliver DeWolfe; Steven S. Gubser; Christopher Rosen; Derek Teaney

2013-04-29T23:59:59.000Z

218

Isospin Splittings of Doubly Heavy Baryons  

SciTech Connect

The SELEX Collaboration has reported a very large isospin splitting of doubly charmed baryons. We show that this effect would imply that the doubly charmed baryons are very compact. One intriguing possibility is that such baryons have a linear geometry Q-q-Q where the light quark q oscillates between the two heavy quarks Q, analogous to a linear molecule such as carbon dioxide. However, using conventional arguments, the size of a heavy-light hadron is expected to be around 0.5 fm, much larger than the size needed to explain the observed large isospin splitting. Assuming the distance between two heavy quarks is much smaller than that between the light quark and a heavy one, the doubly heavy baryons are related to the heavy mesons via heavy quark-diquark symmetry. Based on this symmetry, we predict the isospin splittings for doubly heavy baryons including {Xi}{sub cc}, {Xi}{sub bb} and {Xi}{sub bc}. The prediction for the {Xi}{sub cc} is much smaller than the SELEX value. On the other hand, the {Xi}{sub bb} baryons are predicted to have an isospin splitting as large as (6.3 {+-} 1.7) MeV. An experimental study of doubly bottomed baryons is therefore very important to better understand the structure of baryons with heavy quarks.

Brodsky, Stanley J.; /SLAC; Guo, Feng-Kun; /Bonn U., HISKP /Bonn U.; Hanhart, Christoph; /Julich, Forschungszentrum /JCHP, Julich /IAS, Julich; Meissner, Ulf-G.; /Julich, Forschungszentrum /JCHP, Julich /IAS, Julich /Bonn U., HISKP /Bonn U.

2011-08-18T23:59:59.000Z

219

Heavy Duty Truck Engine Advancement Adoption  

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

petroleum consumption. According to the DOE Energy Information Administration's Annual Energy Outlook (AEO) 2009, U.S. heavy truck fuel consumption will increase 23 percent between...

220

Factorization for hadronic heavy quarkonium production  

E-Print Network (OSTI)

We briefly review several models of heavy quarkonium production in hadronic collisions, and discuss the status of QCD factorization for these production models.

Jian-Wei Qiu

2006-10-31T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Recent Heavy Flavor Results at RHIC  

E-Print Network (OSTI)

We summarize the recent experimental results of heavy favor physics from the Relativistic Heavy Ion Collider (RHIC) in Brookhaven National Lab (BNL) at Long Island, New York, USA.We will discuss the directly reconstructed open charm mesons as well as electrons from heavy favor hadron decays. The charm and bottom quark production cross-sections have also been measured. We will also discuss JPsi and Upsilon states in p+p and heavy ion collisions. The studies described here were carried out and reported by the STAR and PHENIX collaborations at RHIC.

Wenqin Xu

2011-10-13T23:59:59.000Z

222

Heavy ion physics at the LHC  

E-Print Network (OSTI)

Heavy Ion Physics at the LHC ? R. VogtLaboratory, Berkeley, CA USA Physics Department, Universityfor addressing unique physics issues in a completely new

Vogt, R.

2004-01-01T23:59:59.000Z

223

Solar bowl component efficiencies  

Science Conference Proceedings (OSTI)

Battelle Pacific Northwest Laboratory has published two volumes on the economic evaluation of various proposed configurations and plant sizes for the four solar thermal technologies. These are the latest in a series of publications sponsored by the Department of Energy (DOE) on plant and operational costs and are more complete in that they include calculations of electrical output. These latest Battelle volumes use the 1976 solar data from Barstow, Calif., and by calculating or estimating the energy conversion efficiency of each element in the process from sun to electricity predict the output and cost of electricity from different plant sizes for each of the four technologies. In this paper a comparison is presented of the component efficiencies developed by Battelle and those of the solar bowl at Crosbyton, Tex.

O'Hair, E.A.; Green, B.L. (College of Engineering, Texas Tech. Univ., Lubbock, TX (United States))

1992-11-01T23:59:59.000Z

224

INVESTIGATION OF USAGE OF VELOCITY AND PRESSURE DATA WITHIN A WATER DISTRIBUTION LAB MODEL FOR CALIBRATING HYDRAULIC MODELS.  

E-Print Network (OSTI)

??Water distribution modeling for hydraulics and water quality is an important tool for managing system performance of water utilities. An important component of a water… (more)

Ashby, Robert Craig

2013-01-01T23:59:59.000Z

225

Materials-Enabled High-Efficiency (MEHE) Heavy-Duty Diesel Engines  

DOE Green Energy (OSTI)

The purpose of this Cooperative Research and Development Agreement (CRADA) between UTBattelle, Inc. and Caterpillar, Inc. was to improve diesel engine efficiency by incorporating advanced materials to enable higher combustion pressures and temperatures necessary for improved combustion. The project scope also included novel materials for use in advanced components and designs associated with waste-heat recovery and other concepts for improved thermal efficiency. Caterpillar initially provided ORNL with a 2004 Tier 2 C15 ACERT diesel engine (designed for on-highway use) and two 600 hp motoring dynamometers. The first year of the CRADA effort was focused on establishing a heavy-duty experimental engine research cell. First year activities included procuring, installing and commissioning the cell infrastructure. Infrastructure components consisted of intake air handling system, water tower, exhaust handling system, and cell air conditioning. Other necessary infrastructure items included the fuel delivery system and bottled gas handling to support the analytical instrumentation. The second year of the CRADA focused on commissioning the dynamometer system to enable engine experimentation. In addition to the requirements associated with the dynamometer controller, the electrical system needed a power factor correction system to maintain continuity with the electrical grid. During the second year the engine was instrumented and baseline operated to confirm performance and commission the dynamometer. The engine performance was mapped and modeled according to requirements provided by Caterpillar. This activity was further supported by a Work-for-Others project from Caterpillar to evaluate a proprietary modeling system. A second Work-for-Others activity was performed to evaluate a novel turbocharger design. This project was highly successful and may lead to new turbocharger designs for Caterpillar heavy-duty diesel engines. During the third (and final) year of the CRADA, a novel valve material was evaluated to assess high temperature performance and durability. A series of prototype valves, composed of a unique nickel-alloy was placed in the engine head. The engine was aggressively operated using a transient test cycle for 200 hours. The valve recession was periodically measured to determine valve performance. Upon completion of the test the valves were removed and returned to Caterpillar for additional assessment. Industrial in-kind support was available throughout the project period. Review of the status and research results were carried out on a regular basis (meetings and telecons) which included direction for future work activities. A significant portion of the industrial support was in the form of information exchange and technical consultation.

Kass, M.; Veliz, M. (Caterpillar, Inc.)

2011-09-30T23:59:59.000Z

226

Heavy Water and Graphite Reactors - Reactors designed/built by...  

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

experiments, necessary to achieve higher precision for the determination of reactor power distribution patterns, effect of non-uniform void distributions, kinetic behavior,...

227

AN EVALUATION OF HEAVY WATER REACTORS FOR POWER  

DOE Green Energy (OSTI)

Reference designs for pressurized and direct-boiling D/sub 2/O reactors were prepared for electrical outputs of 20, 100, and 250 electrical Mw. A number of possible core designs were considered and those utilized which seemed most appropriate to give low-cost power. The technology and costs available today were employed in the preparation of the over-all plant designs. The Consolidated Western Steel Division of U. S. Steel Corporation assisted by preparing a comprehensive report on the design of large pressure vessels and containment vessels. Zr-clad U fuel elements were used as the study basis, but the effect of using UO/sub 2/ and stainless steel cladding was also considered. The principal results found were: (1) Over a wide range of operating conditions snd economic situations, enriched U (up to perhaps 1.4% U/sup 235/) is presently more economic to employ in D/sub 2/O reactors than is natural U. (2) In the longer range, the use of natural U may become more economic as Zr fabrication costs decrease, continuous charge-discharge devices are developed to permit longer exposure levels, and pressure-vessel technology advances so that the large critical masses and core diameters required are not such sn economic penalty on the natural U. The results agree quite well with the data and discussions of the Canadians. (auth)

Herron, D.P.; Newkirk, W.H.; Puishes, A.

1957-10-01T23:59:59.000Z

228

Recovery and Packaging of Tritium from Canadian Heavy Water Reactors  

Science Conference Proceedings (OSTI)

Fission Reactor / Proceedings of the Second National Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Dayton, Ohio, April 30 to May 2, 1985)

W.J. Holtslander; T.E. Harrison; V. Goyette; J.M. Miller

229

Heavy Squarks at the LHC  

E-Print Network (OSTI)

The LHC, with its seven-fold increase in energy over the Tevatron, is capable of probing regions of SUSY parameter space exhibiting qualitatively new collider phenomenology. Here we investigate one such region in which first generation squarks are very heavy compared to the other superpartners. We find that the production of these squarks, which is dominantly associative, only becomes rate-limited at mSquark > 4(5) TeV for L~10(100) fb-1. However, discovery of this scenario is complicated because heavy squarks decay primarily into a jet and boosted gluino, yielding a dijet-like topology with missing energy (MET) pointing along the direction of the second hardest jet. The result is that many signal events are removed by standard jet/MET anti-alignment cuts designed to guard against jet mismeasurement errors. We suggest replacing these anti-alignment cuts with a measurement of jet substructure that can significantly extend the reach of this channel while still removing much of the background. We study a selection of benchmark points in detail, demonstrating that mSquark= 4(5) TeV first generation squarks can be discovered at the LHC with L~10(100)fb-1.

JiJi Fan; David Krohn; Pablo Mosteiro; Arun M. Thalapillil; Lian-Tao Wang

2011-02-01T23:59:59.000Z

230

Heavy Flavour results from Tevatron  

SciTech Connect

The CDF and D0 experiments finalize the analysis of their full statistics collected in the p{bar p} collisions at a center-of-mass energy of {radical}s = 1.96 TeV at the Fermilab Tevatron collider. This paper presents several new results on the properties of hadrons containing heavy b- and c-quarks obtained by both collaborations. These results include the search for the rare decays B{sup 0}, B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -} (CDF), the study of CP asymmetry in B{sub s} {yields} J{psi}{phi} decay (CDF, D0), the measurement of the like-sign dimuon charge asymmetry (D0), the measurement of CP asymmetry in D{sup 0} {yields} K{sup +}K{sup -} and D{sup 0} {yields} {pi}{sup +}{pi}{sup -} decays (CDF), and the new measurement of the B{sub s} {yields} D{sub s}{sup (*)+} D{sub s}{sup (*)-} branching fraction (CDF). Both experiments still expect to produce more results on the properties of heavy flavours.

Borissov, G.; /Lancaster U.

2012-06-01T23:59:59.000Z

231

Energy Efficiency in Heavy Vehicle Tires, Drivetrains, and Braking Systems  

DOE Green Energy (OSTI)

This document was prepared to support the primary goals of the Department of Energy, Office of Heavy Vehicle Technologies. These were recently stated as follows: ''Develop by 2004 the enabling technologies for a class 7-8 truck with a fuel efficiency of 10 mpg (at 65 mph) which will meet prevailing emission standards. For Class 3-6 trucks operating on an urban driving cycle, develop by 2004 commercially viable vehicles that achieve at least double the fuel economy of comparable current vehicles (1999), and as a research goal, reduce criteria pollutants to 30% below EPA standards. Develop by 2004 the diesel engine enabling technologies to support large-scale industry dieselization of Class 1 and 2 trucks, achieving a 35 % fuel efficiency improvement over comparable gasoline-fueled trucks, while meeting applicable emissions standards.'' The enabling technologies for improving the fuel efficiency of trucks, include not only engine technologies but also technologies involved with lowering the rolling resistance of tires, reducing vehicle aerodynamic drag, improving thermal management, and reducing parasitic frictional losses in drive train components. Opportunities also exist for making better use of the energy that might ordinarily be dissipated during vehicle braking. Braking systems must be included in this evaluation since safety in truck operations is vital, and braking requirements are greater for vehicles having lowered resistance to rolling. The Office of Heavy Vehicle Technologies has initiated a program to improve the aerodynamics of heavy vehicles through wind tunnel testing, computational modeling, and on-road evaluations. That activity is described in a separate multi-year plan; therefore, emphasis in this document will be on tires, drive trains, and braking systems. Recent, dramatic fluctuations in diesel fuel prices have emphasized the importance of effecting savings in truck fuel economy by implementing new component designs and materials.

Peter J. Blau

2000-04-26T23:59:59.000Z

232

Cost reduction possibilities for a heavy-ion accelerator for inertial confinement fusion  

SciTech Connect

A design was produced for a single module in a cost-optimized accelerator appropriate for a commercial heavy-ion power plant. The goal of the study was to determine if the cost of the accelerator module could be reduced through design options, selection of materials, and manufacturing techniques. Independent cost estimates were obtained for the three main components of the module, and cost reductions of 20% from the cost calculated by the heavy-ion accelerator design/cost-minimization computer code LIACEP were identified. 3 refs., 23 figs.

Thayer, G.R.; Sims, J.R.; Henke, M.D.; Harris, D.B.; Dudziak, D.J.; Phillips, N.R.

1987-10-01T23:59:59.000Z

233

The Multi-Purpose Detector for NICA heavy-Ion Collider at JINR  

Science Conference Proceedings (OSTI)

The Multi-Purpose Detector (MPD) is designed to study heavy-ion collisions at the Nuclotron-based heavy Ion Collider fAcility (NICA) at JINR, Dubna. Its main components located inside a superconducting solenoid are a tracking system composed of a silicon microstrip vertex detector followed by a large volume time-projection chamber, a time-of-flight system for particle identification and a barrel electromagnetic calorimeter. A zero degree hadron calorimeter is designed specifically to measure the energy of spectators. In this paper, all parts of the apparatus are described and their tracking and particle identification parameters are discussed in some detail.

Rogachevsky, O. V., E-mail: rogachevsky@jinr.ru [JINR, Veksler and Baldin Laboratory on High Energy Physics (Russian Federation)

2012-05-15T23:59:59.000Z

234

Thermal management in heavy vehicles : a review identifying issues and research requirements.  

DOE Green Energy (OSTI)

Thermal management in heavy vehicles is cross-cutting because it directly or indirectly affects engine performance, fuel economy, safety and reliability, engine/component life, driver comfort, materials selection, emissions, maintenance, and aerodynamics. It follows that thermal management is critical to the design of large (class 6-8) trucks, especially in optimizing for energy efficiency and emissions reduction. Heat rejection requirements are expected to increase, and it is industry's goal to develop new, innovative, high-performance cooling systems that occupy less space and are lightweight and cost-competitive. The state of the art in heavy vehicle thermal management is reviewed, and issues and research areas are identified.

Wambsganss, M. W.

1999-01-15T23:59:59.000Z

235

Heavy metals in suspended powders from steelmaking  

Science Conference Proceedings (OSTI)

Motivations for controlling heavy metal concentrations in gas streams are diverse. Some of them are dangerous to health or to the environment (e.g. Hg, Cd, As, Pb, Cr), some may cause corrosion (e.g. Zn, Pb), some are harmful in other ways (e.g. Arsenic ... Keywords: anthropogenic sources, emissions, heavy metals, human health, pollution of ecosystem, toxic

Cristiana-Zizi Rizescu; Elena-Valentina Stoian; Aurora-Anca Poinescu; Sofia Teodorescu

2010-07-01T23:59:59.000Z

236

UNITAR boosts cogeneration for heavy crude production  

SciTech Connect

The UNITAR/UNDP Information Center for Heavy Crude and Tar Sands publicized the favorable effect of cogeneration on the economics of generating steam for in situ recovery of heavy oil. Although cogeneration of electricity with the production of steam for heavy crude production is a rapidly growing activity in California, it is still unknown in other countries where heavy crude is produced. The study concentrated on two specific cases: a heavy crude cogeneration plant in Kern County in California and a heavy crude production plant at Wolf Lake in Alberta, Canada. A comparison of the two cases showed that due to the specific conditions in California, cogeneration can reduce, in this specific case, the cost of production of heavy crude by $4.80 per barrel whereas in the case of Wolf Lake, cogeneration would not be economic (electricity prices in relation to natural gas prices are much lower in Canada). One of the purposes of the UNITAR study was to direct attention in other countries producing heavy crude to the advantages of cogeneration.

Not Available

1987-03-01T23:59:59.000Z

237

Heavy Vehicle Technologies Program Retrospective and Outlook  

DOE Green Energy (OSTI)

OHVT Mission is to conduct, in collaboration with our heavy vehicle industry partners and their suppliers, a customer-focused national program to research and develop technologies that will enable trucks and other heavy vehicles to be more energy efficient and able to use alternative fuels while simultaneously reducing emissions.

James J. Eberhardt

1999-04-10T23:59:59.000Z

238

Consistent Interaction Of Software Components  

Science Conference Proceedings (OSTI)

Constructing complex software systems by integrating different software components is a promising and challenging approach. With the functionality of software components given by models it is possible to ensure consistency of such models before implementation ...

Gregor Engels; Jochen M. Küuster; Luuk Groenwegen

2002-12-01T23:59:59.000Z

239

Electron-State Hybridization in Heavy-Fermion Systems  

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

Electron-State Hybridization in Heavy-Fermion Systems Electron-State Hybridization in Heavy-Fermion Systems Print Wednesday, 27 September 2006 00:00 Heavy-fermion systems are...

240

Solar Water Heating  

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

publication provides basic informa- publication provides basic informa- tion on the components and types of solar water heaters currently available and the economic and environmental benefits of owning a system. Although the publica- tion does not provide information on building and installing your own system, it should help you discuss solar water heating systems intelligently with a solar equipment dealer. Solar water heaters, sometimes called

Note: This page contains sample records for the topic "heavy water components" 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

Argonne TDC: Superconductive Components, Inc.  

Unlocking the Potential of High-Temperature Superconductors . Superconductive Components, Inc. Columbus, Ohio. For bulk applications of high-temperature ...

242

Argonne TDC: Superconductive Components, Inc.  

High-Performance Tailored Materials for Levitation Permanent Magnet Technologies Making materials to help advance flywheel energy storage. Superconductive Components ...

243

Security Components and Mechanisms Group  

Science Conference Proceedings (OSTI)

Security Components and Mechanisms Group. Welcome. ... A security checklist is a document that contains instructions for securely configuring … ...

2013-01-17T23:59:59.000Z

244

Research and Development Opportunities for Heavy Trucks  

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

1] 1] Introduction Heavy-duty long-haul trucks are critical to the movement of the Nation's freight. These vehicles, which currently consume about 10 percent of the Nation's oil, are characterized by high fuel consumption, fast market turnover, and rapid uptake of new technologies. Improving the fuel economy of Class 8 trucks will dramatically impact both fuel and cost savings. This paper describes the importance of heavy trucks to the Nation's economy, and its potential for fuel efficiency gains. Why Focus on Heavy Trucks? Large and Immediate Impact Investments in improving the fuel economy of heavy Class 8 trucks will result in large reduction in petroleum consumption within a short timeframe. While heavy-duty vehicles make up only 4% of the

245

Heavy photon search experiment at JLAB  

SciTech Connect

The Heavy Photon Search (HPS) experiment in Hall-B at Jefferson Lab will search for new heavy vector boson(s), aka "heavy photons", in the mass range of 20 MeV/c{sup 2} to 1000 MeV/c{sup 2} using the scattering of high energy, high intensity electron beams off a high Z target. The proposed measurements will cover the region of parameter space favored by the muon g-2 anomaly, and will explore a significant region of parameter space, not only at large couplings ({alpha}'/{alpha} > 10{sup -7}), but also in the regions of small couplings, down to {alpha}'/{alpha}~10{sup -10}. The excellent vertexing capability of the Si-tracker uniquely enables HPS to cover the small coupling region. Also, HPS will search for heavy photons in an alternative to the e{sup +} e{sup -} decay mode, in the heavy photon's decay to {mu}{sup +}{mu}{sup -}.

Stepanyan, Stepan [JLAB

2013-11-01T23:59:59.000Z

246

Helicity probabilities for heavy quark fragmentation into heavy-light excited mesons  

E-Print Network (OSTI)

After a brief review on how heavy quark symmetry constraints the helicity fragmentation probabilities for a heavy quark hadronizes into heavy-light hadrons, we present a heavy quark fragmentation model to extract the value for the Falk-Peskin probability $w_{3/2}$ describing the fragmentation of a heavy quark into a heavy-light meson whose light degrees of freedom have angular momentum ${3 \\over 2}$. We point out that this probability depends on the longitudinal momentum fraction $z$ of the meson and on its transverse momentum $p_\\bot$ relative to the jet axis. In this model, the light degrees of freedom prefer to have their angular momentum aligned transverse to, rather than along, the jet axis. Implications for the production of excited heavy mesons, like $D^{**}$ and $B^{**}$, are briefly discussed.

Tzu Chiang Yuan

1995-03-08T23:59:59.000Z

247

Heavy-section steel irradiation program. Semiannual progress report, September 1993--March 1994  

SciTech Connect

Maintaining the integrity of the reactor pressure vessel (RPV) in a light-water-cooled nuclear power plant is crucial in preventing and controlling severe accidents that have the potential for major contamination release. The RPV is the only component in the primary pressure boundary for which, if it should rupture, the engineering safety systems cannot assure protection from core damage. It is therefore imperative to understand and be able to predict the capabilities and limitations of the integrity inherent in the RPV. In particular, ft is vital to fully understand the degree of irradiation-induced degradation of the RPV`s fracture resistance that occurs during service. The Heavy-Section Steel (HSS) Irradiation Program has been established; its primary goal is to provide a thorough, quantitative assessment of the effects of neutron irradiation on the material behavior, and in particular the fracture toughness properties of typical pressure-vessel steels, as they relate to light-water RPV integrity. The program includes the direct continuation of irradiation studies previously conducted within the HSS Technology Program augmented by enhanced examinations of the accompanying microstructural changes. During this period, the report on the duplex-type crack-arrest specimen tests from Phase 11 of the K{sub la} program was issued, and final preparations for testing the large, irradiated crack-arrest specimens from the Italian Committee for Research and Development of Nuclear Energy and Alternative Energies were completed. Tests on undersize Charpy V-notch (CVN) energy specimens in the irradiated and annealed weld 73W were completed. The results are described in detail in a draft NUREG report. In addition, the ORNL investigation of the embrittlement of the High Flux Isotope RPV indicated that an unusually large ratio of the high-energy gamma-ray flux to fast-neutron flux is most likely responsible for the apparently accelerated embrittlement.

Corwin, W.R. [Oak Ridge National Lab., TN (United States)

1995-04-01T23:59:59.000Z

248

Specifying and checking component usage  

Science Conference Proceedings (OSTI)

One of today's challenges is producing reliable software in the face of an increasing number of interacting components. Our system CHET lets developers define specifications describing how a component should be used and checks these specifications in ... Keywords: automata, components, finite-state, flow analysis, specifications, verification

Steven P. Reiss

2005-09-01T23:59:59.000Z

249

Leachability of heavy metals from growth media containing source-separated municipal solid waste compost  

Science Conference Proceedings (OSTI)

The leaching of heavy metals in source-separated municipal solid waste (MSW) compost was determined by irrigation leaching of growth medium, admixed with varying amounts of compost, used for container grown plants. Perennial flowers (black-eyed Susan, Rudbeckia hirta L.) were grown in 2-L containers filled with the growth medium for a 10-wk period. Rainfall was supplemented with overhead irrigation to supply 2 cm of water per day. Leachates collected over each 2-wk period were analyzed for Cd, Cr, Cu, Ni, Pb, and Zn using atomic spectrometry. Concentrations of the heavy metals in the leachates increased with increasing proportions of MSW compost in the growth medium, but decreased with time of leaching. Leaching of the metals occurred at relatively high concentrations initially, followed by continued leaching at low concentrations. The initial leaching of heavy metals is attributed to their soluble or exchangeable forms and the subsequent slow leaching to the solid compounds. The concentrations of the heavy metals remained below the current drinking water standards in all treatments throughout the leaching period. The results thus suggest that contamination of groundwater with heavy metals from source-separated MSW compost applied as a soil amendment should be negligible, as the low concentrations in the leachates leaving the surface soil would be further attenuated by the subsoil. 29 refs., 6 figs., 1 tab.

Sawhney, B.L.; Bugbee, G.J.; Stilwell, D.E. [Connecticut Agricultural Experimental Station, New Haven, CT (United States)

1994-07-01T23:59:59.000Z

250

Spectroscopy of Very Heavy Elements  

Science Conference Proceedings (OSTI)

Advances in spectroscopic techniques have meant that heavy nuclei in the upper right-hand corner of the nuclear chart have become amenable to detailed study. This detailed spectroscopic data can provide a stringent test for current nuclear structure theories. Experiments to investigate the structure of nuclei in the region of {sup 254}No can yield information concerning moments of inertia, stability against fission with rotation, single-particle properties, excitation energies of two quasi-particle states, and so on. A brief overview of the techniques used and recent results from studies in the region of {sup 254}No are presented, along with a summary of future developments which will allow further advances to be made.

Greenlees, P. T.; Herzberg, R.-D.; Ketelhut, S.; Eeckhaudt, S.; Jakobsson, U.; Jones, P.; Julin, R.; Juutinen, S.; Leino, M.; Nyman, M.; Peura, P.; Rahkila, P.; Saren, J.; Scholey, C.; Sorri, J.; Uusitalo, J. [Department of Physics, University of Jyvaeskylae, FIN-40014 Jyvaeskylae (Finland); Ackermann, D.; Hessberger, F.-P. [GSI, D-64291 Darmstadt (Germany); Butler, P. A.; Gray-Jones, C. [Department of Physics, University of Liverpool, Oxford Street, Liverpool, L69 7ZE (United Kingdom)] (and others)

2008-05-12T23:59:59.000Z

251

Effects of LCRA Lakes on Riparian Property Values: Recreational and Aesthetic Components of Lake Side Housing in the Colorado River Basin  

E-Print Network (OSTI)

The Lower Colorado River Authority (LCRA) manages the Colorado River Basin in a ten county area stretching from central Texas to the gulf coast of Texas. In its recent "Water Management Plan for the Lower Colorado River," the Lower Colorado River Authority (LCRAb) stated: The "business" of water resources management in Texas, and throughout the nation, is in the midst of transition and transformation. The transition is largely the result of ever increasing demands and competition for renewable but limited water supplies and a growing awareness of the limits of "traditional" water supply management strategies. ... In response to new challenges and uncertainties, it is imperative that water management institutions, at all levels, adopt a balanced, flexible approach that gives due weight to all the conflicting demands on the water, including the heavy economic dependence of the rice farmers on historic uses of irrigation water, rapidly emerging public interest in recreation, and environmental values. (p. 1) The problem is that the total quantity demanded is increasing and peak demand for agricultural, municipal, industrial, and recreational uses occurs at the same time of year. Since the supply is limited in any given year, efficient water management requires knowledge of the benefits to the various user groups. The research described in this paper focuses on the user group whose benefits have received relatively little attention in the past. These are the recreational and aesthetic users who own property and live around reservoirs in the Lower Colorado River basin. This study employs a "hedonic" or "implicit" price approach to examine a component of the recreational (and aesthetic) value of two lakes in the "Highland Lakes" chain. The study addresses the implicit recreational and aesthetic (RA) price placed on Lakes Austin and Travis by homeowners living near the lakes. It also examines the relationship between lake management practices and the value of lake front properties.

Lansford, Notie H. Jr.; Jones, Lonnie L.

1995-09-01T23:59:59.000Z

252

Guidelines for Makeup Water Treatment  

Science Conference Proceedings (OSTI)

The quality of boiler and heat recovery steam generator HRSG cycle makeup water is central to ensuring the necessary purity of boiler or HRSG water, feedwater, and steam. It plays an important role in ensuring component availability and reliability in fossil and combined cycle plants. This report presents up-to-date guidelines based on proven approaches for producing makeup water from various raw water supplies. Major losses of availability in fossil fuel plants are attributable to water and steam contam...

2010-12-23T23:59:59.000Z

253

Electron-State Hybridization in Heavy-Fermion Systems  

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

Electron-State Hybridization in Heavy-Fermion Systems Print Heavy-fermion systems are characterized by electrons with extremely large effective masses. The corresponding...

254

Deformation Prediction of a Heavy Hydro Turbine Blade During ...  

Science Conference Proceedings (OSTI)

Presentation Title, Deformation Prediction of a Heavy Hydro Turbine Blade During ... Abstract Scope, Heavy hydro turbine castings are made of martensitic ...

255

Ferroelectric Plasma Source for Heavy Ion Beam Charge Neutralization  

E-Print Network (OSTI)

Heavy Ion Beam Driven Fusion Reactor Study”, KfK-3480,a possible heavy ion fusion reactor design [1]. The final

2005-01-01T23:59:59.000Z

256

Experimental Research on Recovery of Heavy Metals from EAF ...  

Science Conference Proceedings (OSTI)

To recycle these heavy metals, it is quite important to know the reactivity and metallurgical behavior of these heavy metals contained in EAF stainless steel dust.

257

Assessment of heavy metal contamination of roadside soils in ...  

Science Conference Proceedings (OSTI)

Feb 16, 2008 ... heavy metals was found using factor analysis. Keywords Heavy metals Á Roadside soils Á. Transportation period Á Contamination index Á.

258

Materials Reliability Program: Reevaluation of Stainless Steel Components in NUREG/CR-6674 (MRP-172)  

Science Conference Proceedings (OSTI)

NUREG/CR-6674, published June 2000, described a probabilistic fracture mechanics evaluation of light water reactor components subject to environmental fatigue effects.

2005-11-15T23:59:59.000Z

259

Combustion Characteristics and Kinetic Analysis of Biomass Coal Oil Water Slurry  

Science Conference Proceedings (OSTI)

The combustion characteristics of biomass coal oil water slurry (biomass-COWS), containing Fujian anthracite, water hyacinth, heavy oil and dispersant were studied by thermal analysis with TG-DTG method. The results showed that the ignition temperature ... Keywords: biomass coal oil water slurry, coal oil water slurry, water hyacinth, thermal analysis, combustion kinetics

Luo Zuyun; Lin Rongying

2011-02-01T23:59:59.000Z

260

Geothermal and heavy-oil resources in Texas  

Science Conference Proceedings (OSTI)

In a five-county area of South Texas, geopressured-geothermal reservoirs in the Paleocene-Eocene Wilcox Group lie below medium- to heavy-oil reservoirs in the Eocene Jackson Group. This fortuitous association suggests the use of geothermal fluids for thermally enhanced oil recovery (TEOR). Geothermal fairways are formed where thick deltaic sandstones are compartmentalized by growth faults. Wilcox geothermal reservoirs in South Texas are present at depths of 11,000 to 15,000 ft (3,350 to 4,570 m) in laterally continuous sandstones 100 to 200 ft (30 to 60 m) thick. Permeability is generally low (typically 1 md), porosity ranges from 12 to 24 percent, and temperature exceeds 250{degrees}F (121{degrees}C). Reservoirs containing medium (20{degrees} to 25{degrees} API gravity) to heavy (10{degrees} to 20{degrees} API gravity) oil are concentrated along the Texas Coastal Plain in the Jackson-Yegua Barrier/Strandplain (Mirando Trend), Cap Rock, and Piercement Salt Dome plays and in the East Texas Basin in Woodbine Fluvial/Deltaic Strandplain and Paluxy Fault Line plays. Injection of hot, moderately fresh to saline brines will improve oil recovery by lowering viscosity and decreasing residual oil saturation. Smectite clay matrix could swell and clog pore throats if injected waters have low salinity. The high temperature of injected fluids will collapse some of the interlayer clays, thus increasing porosity and permeability. Reservoir heterogeneity resulting from facies variation and diagenesis must be considered when siting production and injection wells within the heavy-oil reservoir. The ability of abandoned gas wells to produce sufficient volumes of hot water over the long term will also affect the economics of TEOR.

Seni, S.J.; Walter, T.G.

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Dynamics of neutralizing electrons during the focusing of intense heavy ions beams inside a heavy fusion reactor chamber  

E-Print Network (OSTI)

beams inside a heavy ion fusion reactor chamber * Agustin F.of a Heavy Ion Fusion reactor heavily depends on the maximum

Lifschitz, Agustin F.; Maynard, Gilles; Vay, Jean-Luc; Lenglet, Andrian

2006-01-01T23:59:59.000Z

262

Dynamics of neutralizing electrons during the focusing of intense heavy ions beams inside a heavy fusion reactor chamber  

E-Print Network (OSTI)

beams inside a heavy ion fusion reactor chamber * Agustin F.efficiency of a Heavy Ion Fusion reactor heavily depends on

Lifschitz, Agustin F.; Maynard, Gilles; Vay, Jean-Luc; Lenglet, Andrian

2006-01-01T23:59:59.000Z

263

Robust Energy Cost Optimization of Water Distribution System with ...  

E-Print Network (OSTI)

includes two components: the price of the water depending on the specific source , and the cost of electricity required to pump the water from the source into the ...

264

A hydrologic information system for water availability modeling.  

E-Print Network (OSTI)

??Texas water availability modeling has undergone a transition from paper-based documents to digital databases and GIS maps. This results in many discrete components: a water… (more)

Siler, Clark D., 1978-

2011-01-01T23:59:59.000Z

265

Heavy metals processing near-net-forming summary progress report  

SciTech Connect

This study utilized a converging-diverging nozzle to spray-form an alloy having a weight percent composition of 49.6% iron, 49.6% tungsten, and 0.8% carbon into samples for analysis. The alloy was a surrogate that displayed metallurgical characteristics similar to the alloys used in the heavy metals processing industry. US DOE facilities are evaluating advanced technologies which can simplify component fabrication, reduce handling steps, and minimize final machining. The goal of producing net-shaped components can be approached from several directions. In spray forming, molten metal is converted by a nozzle into a plume of fine droplets which quickly cool in flight and solidify against a substrate. The near-final dimension product that is formed receives additional benefits from rapid solidification. This single-step processing approach would aid the heavy metals industry by streamlining fabrication, improving production yields, and minimizing the generation of processing wastes. This Program effort provided a large selection of as-sprayed specimens. These samples were sprayed with gas-to-metal mass ratios ranging from 0.8:1 to 4:1. Samples targeted for analysis were produced from different spray conditions. Metallography on some samples revealed areas that were fully dense and homogeneous at 5,000X. These areas averaged grain sizes of 1 micron diameter. Other samples when viewed at 2,000X were highly segregated in the 10 micron diameter range. Deposit efficiencies of greater than 90% were demonstrated using the untailored spray system. Discharge gases were analyzed and two categories of particles were identified. One category of particle had a chemical composition characteristic of the alloy being sprayed and the second type of particle had a chemical composition characteristic of the ceramics used in the spray system component fabrication. Particles ranged in size from 0.07 to 3 microns in diameter. 8 refs., 67 figs., 20 tabs.

Watson, L.D. [Custom Spray Technologies, Inc., Rigby, ID (United States); Thompson, J.E. [Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)

1994-09-01T23:59:59.000Z

266

Ceramic Component Development Process Analysis  

SciTech Connect

The development of ceramic components and coatings is critical to the demonstration of advanced fossil energy systems. Ceramic components and coating will play critical role in hot-gas filtration, high- temperature heat exchangers, thermal barrier coatings, and the hot- section of turbines. Continuous-fiber composites (CFCC) are expected to play an increasing role in these applications. This program encompassed five technical areas related to ceramic component development for fossil energy systems.

Boss, D.; Sambasivan, S.; Kuehmann, C. [Northwestern Univ., Evanston, IL (United States). Basic Industrial Research Lab.; Faber, K. [Northwestern University, MEAS Materials Science & Engineering, Evanston, IL (United States)

1996-12-31T23:59:59.000Z

267

System, Stack and Component Design  

Science Conference Proceedings (OSTI)

Oct 17, 2011 ... Energy Conversion/Fuel Cells: System, Stack and Component Design ... In fuel cell mode it produces electricity and heat from hydrogen, and in ...

268

A 3 MEGAJOULE HEAVY ION FUSION DRIVER  

E-Print Network (OSTI)

Research, Office of Inertia! Fusion, Research Division ofA 3 MEGAJOULE HEAVY ION FUSION DRIVER* A. Faltens, E. Hoyer,Research, Office of Inertial Fusion, Research Division of

Faltens, A.

2010-01-01T23:59:59.000Z

269

NUCLEAR STRUCTURE AND HEAVY-ION FUSION  

E-Print Network (OSTI)

Nuclear Structure and Heavy-Ton Fusion* A series of lecturesthe cross section for fusion in the experiments consideredEffects g in III. Subharrier Fusion Cross Sections for Light

Stokstad, R.G.

2010-01-01T23:59:59.000Z

270

Heavy hadrons in quark-gluon plasma  

SciTech Connect

We use the nonperturbative quark-antiquark potential derived within the Field Correlator Method and the screened Coulomb potential to calculate binding energies and melting temperatures of heavy mesons and baryons in the deconfined phase of quark-gluon plasma.

Narodetskii, I. M., E-mail: naro@itep.ru; Simonov, Yu. A.; Veselov, A. I. [Institute of Theoretical and Experimental Physics (Russian Federation)

2011-03-15T23:59:59.000Z

271

Hadron Production in Heavy Ion Collisions  

E-Print Network (OSTI)

We review hadron production in heavy ion collisions with emphasis on pion and kaon production at energies below 2 AGeV and on partonic collectivity at RHIC energies.

Helmut Oeschler; Hans Georg Ritter; Nu Xu

2009-08-12T23:59:59.000Z

272

Magnetism and superconductivity of heavy fermion matter  

E-Print Network (OSTI)

The interplay of magnetism and unconventional superconductivity (d singlet wave or p triplet wave) in strongly correlated electronic system (SCES) is discussed with recent examples found in heavy fermion compounds. A short presentation is given on the formation of the heavy quasiparticle with the two sources of a local and intersite enhancement for the effective mass. Two cases of the coexistence or repulsion of antiferromagnetism and superconductivity are given with CeIn3 and CeCoIn5. A spectacular example is the emergence of superconductivity in relatively strong itinerant ferromagnets UGe2 and URhGe. The impact of heavy fermion matter among other SCES as organic conductor or high TC oxide is briefly pointed out. Key words: heavy fermion, superconductivity, antiferromagnetism, ferromagnetism

J. Flouquet A; G. Knebel A; D. Braithwaite A; D. Aoki B; J. P. Brison C; F. Hardy A; A. Huxley A; S. Raymond A; B. Salce A; I. Sheikin D

2005-01-01T23:59:59.000Z

273

Treatment of Heavy Metal Wastes - III - TMS  

Science Conference Proceedings (OSTI)

Ltd., Flin Fion, Manitoba, Canada R8A 1N9. 3:15 pm BREAK. 3:30 pm. An Integrated Bioremediation Route for Heavy Metal Contaminated Land Based on the ...

274

Statistics of Heavy Rainfall Occurrences in Taiwan  

Science Conference Proceedings (OSTI)

The seasonal variations of heavy rainfall days over Taiwan are analyzed using 6-yr (1997–2002) hourly rainfall data from about 360 rainfall stations, including high-spatial-resolution Automatic Rainfall and Meteorological Telemetry System ...

Ching-Sen Chen; Yi-Leng Chen; Che-Ling Liu; Pay-Liam Lin; Wan-Chin Chen

2007-10-01T23:59:59.000Z

275

Light-Heavy Crude & Product Price Differences  

U.S. Energy Information Administration (EIA)

Similar light-heavy price difference trends are seen in both the crude oil and the product markets. However, there are some short-term product market changes that ...

276

Status of Heavy-lepton Searches  

DOE R&D Accomplishments (OSTI)

Searches for heavy leptons using e{sup +}e{sup -} annihilation, lepton-hadron collisions, photon-hadron collisions, hadron-hadron collisions, and studies of macroscopic matter are reviewed. The present experimental status and future possibilities are summarized.

Perl, M. L.

1981-06-00T23:59:59.000Z

277

The search for a heavy Higgs boson  

SciTech Connect

Theoretical limits on the mass of the Higgs boson from vacuum stability and perturbative unitarity are examined. Search techniques for heavy Higgs bosons, M/sub H/ > 200 GeV, are also reviewed. 8 refs., 5 figs.

Dawson, S.

1989-02-01T23:59:59.000Z

278

Updated Satellite Technique to Forecast Heavy Snow  

Science Conference Proceedings (OSTI)

Certain satellite interpretation techniques have proven quite useful in the heavy snow forecast process. Those considered best are briefly reviewed, and another technique is introduced. This new technique was found to be most valuable in cyclonic ...

Edward C. Johnston

1995-06-01T23:59:59.000Z

279

Current status of nonthermal heavy oil recovery  

Science Conference Proceedings (OSTI)

Heavy oils are an important resource worldwide, and yet two-thirds of the heavy oil deposits cannot be exploited by means of thermal recovery methods, because the effective energy production approaches energy input for reasons of formation thickness, depth, oil saturation and/or porosity. In such instances, especially if the heavy oil is not too viscous (below ca 1000 cp), it may be economical to employ nonthermal recovery methods. These include polymer flooding, alkaline flooding, CO/sub 2/ (gaseous) floods, solvent floods, and other more specialized recovery methods, such as emulsion flooding, and combination techniques. This work discusses nonthermal heavy oil recovery methods, based upon their application in the field. The processes and their mechanistic features are discussed in the light of laboratory observations, which tend to be more optimistic than field results. 48 references.

Alikhan, A.A.; Farouq Ali, S.M.

1983-01-01T23:59:59.000Z

280

Dispersion of Heavy Particles by Turbulent Motion  

Science Conference Proceedings (OSTI)

Accurate prediction of heavy particle dispersion in turbulent flows requires a simultaneous consideration of particle's inertia and particle's drift velocity. A mathematically simple and physically comprehensive analysis was developed to solve ...

Lian-Ping Wang; Davd E. Stock

1993-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

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

282

Optimal Tracking of Distributed Heavy Hitters and Hong Kong, China  

E-Print Network (OSTI)

Optimal Tracking of Distributed Heavy Hitters and Quantiles Ke Yi HKUST Hong Kong, China yike heavy hitters and quantiles in the distributed streaming model. The heavy hitters and quantiles are two the universe U = {1, . . . , u}. For a given 0 1, the -heavy hitters are those elements of A whose frequency

Yi, Ke "Kevin"

283

Hot Corrosion of Shipboard Turbine Components in High Water ...  

Science Conference Proceedings (OSTI)

While the resulting degradation for the two types of hot corrosion has been well documented for traditional fuel ... Hardware Materials in Carbonate Fuel Cell.

284

APS beamline standard components handbook  

SciTech Connect

It is clear that most Advanced Photon Source (APS) Collaborative Access Team (CAT) members would like to concentrate on designing specialized equipment related to their scientific programs rather than on routine or standard beamline components. Thus, an effort is in progress at the APS to identify standard and modular components of APS beamlines. Identifying standard components is a nontrivial task because these components should support diverse beamline objectives. To assist with this effort, the APS has obtained advice and help from a Beamline Standardization and Modularization Committee consisting of experts in beamline design, construction, and operation. The staff of the Experimental Facilities Division identified various components thought to be standard items for beamlines, regardless of the specific scientific objective of a particular beamline. A generic beamline layout formed the basis for this identification. This layout is based on a double-crystal monochromator as the first optical element, with the possibility of other elements to follow. Pre-engineering designs were then made of the identified standard components. The Beamline Standardization and Modularization Committee has reviewed these designs and provided very useful input regarding the specifications of these components. We realize that there will be other configurations that may require special or modified components. This Handbook in its current version (1.1) contains descriptions, specifications, and pre-engineering design drawings of these standard components. In the future, the APS plans to add engineering drawings of identified standard beamline components. Use of standard components should result in major cost reductions for CATs in the areas of beamline design and construction.

Kuzay, T.M.

1992-01-01T23:59:59.000Z

285

Anomalous Radiative Decay of Heavy Higgs Boson  

E-Print Network (OSTI)

The radiative decay width of a heavy Higgs boson $H \\rightarrow W^+W^-\\gamma$ for a {\\it hard} photon is calculated in the Standard Model and its extension with anomalous $\\gamma WW$ couplings. Its dependence on the Higgs mass, the two unknown anomalous couplings, and the photon energy cutoff are studied in detail. We show that this radiative decay of a heavy Higgs is not very sensitive to a wide range of the anomalous couplings compared to the Standard Model result.

Tzu Chiang Yuan

1992-05-27T23:59:59.000Z

286

SCR SYSTEMS FOR HEAVY DUTY TRUCKS: PROGRESS TOWARDS MEETING EURO 4 EMISSION STANDARDS IN 2005  

DOE Green Energy (OSTI)

Emissions of diesel engines contain some components, which support the generation of smog and which are classified hazardous. Exhaust gas aftertreatment is a powerful tool to reduce the NOx and Particulate emissions. The NOx-emission can be reduced by the SCR technology. SCR stands for Selective Catalytic Reduction. A reduction agent has to be injected into the exhaust upstream of a catalyst. On the catalyst the NOx is reduced to N2 (Nitrogen) and H2O (Water). This catalytic process was developed in Japan about 30 years ago to reduce the NOx emission of coal-fired power plants. The first reduction agent used was anhydrous ammonia (NH3). SCR technology was used with diesel engines starting mid of the 80s. First applications were stationary operating generator-sets. In 1991 a joint development between DaimlerChrysler, MAN, IVECO and Siemens was started to use SCR technology for the reduction of heavy duty trucks. Several fleet tests demonstrated the durability of the systems. To day, SCR technology is the most promising technology to fulfill the new European Regulations EURO 4 and EURO 5 being effective Oct. 2005 and Oct. 2008. The efficient NOx reduction of the catalyst allows an engine calibration for low fuel consumption. DaimlerChrysler decided to use the SCR technology on every heavy duty truck and bus in Europe and many other truck manufacturers will introduce SCR technology to fulfill the 2005 emission regulation. The truck manufacturers in Europe agreed to use aqueous solution of Urea as reducing agent. The product is called AdBlue. AdBlue is a non toxic, non smelling liquid. The consumption is about 5% of the diesel fuel consumption to reduce the NOx emissions. A small AdBlue tank has to be installed to the vehicle. With an electronically controlled dosing system the AdBlue is injected into the exhaust. The dosing system is simple and durable. It has proven its durability during winter and summer testing as well as in fleet tests. The infrastructure for AdBlue is under evaluation in Europe by Urea Producers and Mineral Oil companies to be readily available in time. Urea is one of the most common chemical products in the world and the production and the distribution very much experienced. However, a pure grade is needed for automotive application and requires special attention.

Frank, W; Huethwohl, G; Maurer, B

2003-08-24T23:59:59.000Z

287

Definition of heavy oil and natural bitumen  

Science Conference Proceedings (OSTI)

Definition and categorization of heavy oils and natural bitumens are generally based on physical or chemical attributes or on methods of extraction. Ultimately, the hydrocarbon's chemical composition will govern both its physical state and the extraction technique applicable. These oils and bitumens closely resemble the residuum from wholecrude distillation to about 1,000/degree/F; if the residuum constitutes at least 15% of the crude, it is considered to be heavy. In this material is concentrated most of the trace elements, such as sulfur, oxygen, and nitrogen, and metals, such as nickel and vanadium. A widely used definition separates heavy oil from natural bitumen by viscosity, crude oil being less, and bitumen more viscous than 10,000 cp. Heavy crude then falls in the range 10/degree/-20/degree/ API inclusive and extra-heavy oil less than 10/degree/ API. Most natural bitumen is natural asphalt (tar sands, oil sands) and has been defined as rock containing hydrocarbons more viscous than 10,000 cp or else hydrocarbons that may be extracted from mined or quarried rock. Other natural bitumens are solids, such as gilsonite, grahamite, and ozokerite, which are distinguished by streak, fusibility, and solubility. The upper limit for heavy oil may also be set at 18/degree/ API, the approximate limit for recovery by waterflood.

Meyer, R.F.

1988-08-01T23:59:59.000Z

288

Abrasion Testing of Critical Components of Hydrokinetic Devices  

SciTech Connect

The objective of the Abrasion Testing of Critical Components of Hydrokinetic Devices (Project) was to test critical components of hydrokinetic devices in waters with high levels of suspended sediment – information that is widely applicable to the hydrokinetic industry. Tidal and river sites in Alaska typically have high suspended sediment concentrations. High suspended sediment also occurs in major rivers and estuaries throughout the world and throughout high latitude locations where glacial inputs introduce silt into water bodies. In assessing the vulnerability of technology components to sediment induced abrasion, one of the greatest concerns is the impact that the sediment may have on device components such as bearings and seals, failures of which could lead to both efficiency loss and catastrophic system failures.

Worthington, Monty [ORPC Alaska] [ORPC Alaska; Ali, Muhammad [Ohio University] [Ohio University; Ravens, Tom [University of Alaska Anchorage] [University of Alaska Anchorage

2013-12-06T23:59:59.000Z

289

Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Idle Heavy-Duty Idle Reduction Requirement to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Idle Reduction Requirement Heavy-duty vehicles with a gross vehicle weight rating greater than 8,500

290

Supervised probabilistic principal component analysis  

Science Conference Proceedings (OSTI)

Principal component analysis (PCA) has been extensively applied in data mining, pattern recognition and information retrieval for unsupervised dimensionality reduction. When labels of data are available, e.g., in a classification or regression task, ... Keywords: dimensionality reduction, principal component analysis, semi-supervised projection, supervised projection

Shipeng Yu; Kai Yu; Volker Tresp; Hans-Peter Kriegel; Mingrui Wu

2006-08-01T23:59:59.000Z

291

Performance of Solar Facade Components  

E-Print Network (OSTI)

of these products by developing and applying appropriate methods for assessment of durability, reliability materials · Daylighting products · Solar protection devices (e.g., blinds) · PV windows · Solar collector components are investigated. Physical models are further developed that allow component performance

292

Heat treating of manufactured components  

DOE Patents (OSTI)

An apparatus for heat treating manufactured components using microwave energy and microwave susceptor material is disclosed. The system typically includes an insulating vessel placed within a microwave applicator chamber. A moderating material is positioned inside the insulating vessel so that a substantial portion of the exterior surface of each component for heat treating is in contact with the moderating material.

Ripley, Edward B. (Knoxville, TN)

2012-05-22T23:59:59.000Z

293

Matching heavy-light currents with NRQCD and HISQ quarks  

E-Print Network (OSTI)

We calculate the one loop renormalisation parameters for the heavy-light axial-vector and vector currents using lattice perturbation theory. We use NonRelativistic QCD (NRQCD) heavy quarks and the Highly Improved Staggered Quark (HISQ) action for the light quarks. We present results for heavy-light currents with massless HISQ quarks and briefly discuss the extension to heavy-heavy currents with massive HISQ quarks.

Christopher Monahan; Christine Davies; Ron Horgan; G. Peter Lepage; Heechang Na; Junko Shigemitsu

2012-10-25T23:59:59.000Z

294

TECHNICAL DESCRIPTION OF A SODIUM-COMPONENT TEST INSTALLATION  

SciTech Connect

The instellation is designed primarily for operational testing of Na- heated steam generators and intermediate heat exchangers suitable as prototype components for large, Na-cooled power plants. Other types of Na components can also be tested in the facility. The instellation consists of a 35-Mwt gas-fired Na heat source, a main primary-Na system, a main secondary-Na system, a water- steam system, and a set-up for heat rejection to air. (J.R.D.)

1961-01-01T23:59:59.000Z

295

Nambe Pueblo Water Budget and Forecasting model.  

SciTech Connect

This report documents The Nambe Pueblo Water Budget and Water Forecasting model. The model has been constructed using Powersim Studio (PS), a software package designed to investigate complex systems where flows and accumulations are central to the system. Here PS has been used as a platform for modeling various aspects of Nambe Pueblo's current and future water use. The model contains three major components, the Water Forecast Component, Irrigation Scheduling Component, and the Reservoir Model Component. In each of the components, the user can change variables to investigate the impacts of water management scenarios on future water use. The Water Forecast Component includes forecasting for industrial, commercial, and livestock use. Domestic demand is also forecasted based on user specified current population, population growth rates, and per capita water consumption. Irrigation efficiencies are quantified in the Irrigated Agriculture component using critical information concerning diversion rates, acreages, ditch dimensions and seepage rates. Results from this section are used in the Water Demand Forecast, Irrigation Scheduling, and the Reservoir Model components. The Reservoir Component contains two sections, (1) Storage and Inflow Accumulations by Categories and (2) Release, Diversion and Shortages. Results from both sections are derived from the calibrated Nambe Reservoir model where historic, pre-dam or above dam USGS stream flow data is fed into the model and releases are calculated.

Brainard, James Robert

2009-10-01T23:59:59.000Z

296

Materials Degradation Issues in Pressurized Water Reactors  

Science Conference Proceedings (OSTI)

CASL: The Consortium for Advanced Simulation of Light Water Reactors: A U.S. ... Strategies for Studying High Dose Irradiation Effects in Reactor Components.

297

The Doe Water Cycle Pilot Study  

Science Conference Proceedings (OSTI)

A Department of Energy (DOE) multilaboratory Water Cycle Pilot Study (WCPS) investigated components of the local water budget at the Walnut River watershed in Kansas to study the relative importance of various processes and to determine the ...

N. L. Miller; A. W. King; M. A. Miller; E. P. Springer; M. L. Wesely; K. E. Bashford; M. E. Conrad; K. Costigan; P. N. Foster; H. K. Gibbs; J. Jin; J. Klazura; B. M. Lesht; M. V. Machavaram; F. Pan; J. Song; D. Troyan; R. A. Washington-Allen

2005-03-01T23:59:59.000Z

298

Recovery of heavy crude oil or tar sand oil or bitumen from underground formations  

SciTech Connect

This patent describes a method of producing heavy crude oil or tar sand oil or bitumen from an underground formation. The method consists of utilizing or establishing an aqueous fluid communication path within and through the formation between an injection well or conduit and a production well or conduit by introducing into the formation from the injection well or conduit hot water and/or low quality steam at a temperature in the range about 60{sup 0}-130{sup 0}C and at a substantially neutral or alkaline pH to establish or enlarge the aqueous fluid communication path within the formation from the injection well or conduit to the production well or conduit by movement of the introduced hot water or low quality steam through the formation, increasing the temperature of the injected hot water of low quality steam to a temperature in the range about 110{sup 0}-180{sup 0}C while increasing the pH of the injected hot water or low quality steam to a pH of about 10-13 so as to bring about the movement or migration or stripping of the heavy crude oil or tar sand oil or bitumen from the formation substantially into the hot aqueous fluid communication path with the formation and recovering the resulting produced heavy crude oil or tar sand oil or bitumen from the formation as an emulsion containing less than about 30% oil or bitumen from the production well or conduit.

McKay, A.S.

1989-07-11T23:59:59.000Z

299

Ratios of heavy baryons to heavy mesons in relativistic nucleus-nucleus collisions  

E-Print Network (OSTI)

Heavy baryon/meson ratios Lambda(c)/D(0) and Lambda(b)/(B) over bar (0) in relativistic heavy ion collisions are studied in the quark coalescence model. For heavy baryons, we include production from coalescence of heavy quarks with free light quarks as well as with bounded light diquarks that might exist in the strongly coupled quark-gluon plasma produced in these collisions. Including the contribution from decays of heavy hadron resonances and also that due to fragmentation of heavy quarks that are left in the system after coalescence, the resulting Lambda(c)/D(0) and Lambda(b)/(B) over bar (0) ratios in midrapidity (vertical bar y vertical bar heavy baryon/meson ratios is found to be sensitive to the heavy quark mass, with the Lambda(b)/(B) over bar (0) ratio being much flatter than the Lambda(c)/D(0) ratio. The latter peaks at the transverse momentum p(T) similar or equal to 0.8 GeV but the peak shifts to p(T) similar or equal to 2 GeV in the absence of diquarks.

Oh, Yongseok; Ko, Che Ming; Lee, Su Houng; Yasui, Shigehiro.

2009-01-01T23:59:59.000Z

300

SRAT/SME components: Wear evaluation. Area metallurgical report  

SciTech Connect

Material water of internal components in the Slurry Receipt Adjustment Tank/Slurry Mix Evaporator (SRAT/SME) has been documented. This study consisted of a special wear test of approximately 1,950 hours of simulated run time. Basic dimensions were obtained for components before the test, and they were compared with measurements taken after the exposure. Wear of tank components, the estimated life of design materials of construction, and guidance for design configuration were obtained. The test program is continuing with no basic changes in design.

Jenkins, C.F.

1987-11-16T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Plant Support Engineering: Aging Effects for Structures and Structural Components (Structural Tools)  

Science Conference Proceedings (OSTI)

As part of the application process for license renewal (LR), nuclear utilities must perform an evaluation to confirm that they have appropriately considered any aging effects on plant components within the scope of the License Renewal Rule. This report identifies structures and structural components subject to aging management review (AMR) for generic pressurized water reactor (PWR) and boiling water reactor (BWR) nuclear plants. The report also describes aging mechanisms that might impact each component.

2007-12-21T23:59:59.000Z

302

Wastewaters at SRS where heavy metals are a potential problem  

SciTech Connect

The principal objective of this report is to identify and prioritize heavy metal-containing wastewaters at the Savannah River Site (SRS) in terms of their suitability for testing of and clean-up by a novel bioremediation process being developed by SRTC. This process involves the use of algal biomass for sequestering heavy metal and radionuclides from wastewaters. Two categories of SRS wastewaters were considered for this investigation: (1) waste sites (primarily non-contained wastes managed by Environmental Restoration), and (2) waste streams (primarily contained wastes managed by Waste Management). An attempt was made to evaluate all sources of both categories of waste throughout the site so that rational decisions could be made with regard to selecting the most appropriate wastewaters for present study and potential future treatment. The investigation included a review of information on surface and/or groundwater associated with all known SRS waste sites, as well as waters associated with all known SRS waste streams. Following the initial review, wastewaters known or suspected to contain potentially problematic concentrations of one or more of the toxic metals were given further consideration.

Wilde, E.W.; Radway, J.C.

1994-11-01T23:59:59.000Z

303

Water Quality  

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

Water Quality Water Quality We protect water quality through stormwater control measures and an extensive network of monitoring wells and stations encompassing groundwater, surface...

304

Inherently Reliable Boiler Component Design  

Science Conference Proceedings (OSTI)

This report summarizes the lessons learned during the last decade in efforts to improve the reliability and availability of boilers used in the production of electricity. The information in this report can assist in component modifications and new boiler designs.

2003-03-31T23:59:59.000Z

305

Binder Formulations Utilizing Furanic Components  

This technology describes the use of furanic components derived from agricultural waste streams, such as hydroxylmethylfurfural (HMF).  When used in combination with a phenolic urethane resin and cured with a gaseous amine catalyst, the resulting ...

306

Par Pond water balance  

SciTech Connect

A water budget for the Par Pond hydrologic system was established in order to estimate the rate of groundwater influx to Par Pond. This estimate will be used in modeling exercises to predict Par Pond reservoir elevation and spillway discharge in the scenario where Savannah River water is no longer pumped and discharged into Par Pond. The principal of conservation of mass was used to develop the water budget, where water inflow was set equal to water outflow. Components of the water budget were identified, and the flux associated with each was determined. The water budget was considered balanced when inflow and outflow summed to zero. The results of this study suggest that Par Pond gains water from the groundwater system in the upper reaches of the reservoir, but looses water to the groundwater system near the dam. The rate of flux of groundwater from the water table aquifer into Par Pond was determined to be 13 cfs. The rate of flux from Par Pond to the water table aquifer near the dam was determined to be 7 cfs.

Hiergesell, R.A.; Dixon, K.L.

1996-06-01T23:59:59.000Z

307

Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Vehicle Heavy-Duty Vehicle Emissions Reduction Grants to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Vehicle Emissions Reduction Grants

308

Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles  

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

Medium- and Medium- and Heavy-Duty Vehicles to someone by E-mail Share Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Facebook Tweet about Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Twitter Bookmark Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Google Bookmark Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Delicious Rank Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Digg Find More places to share Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on AddThis.com... Home Overview Light-Duty Vehicles Medium- and Heavy-Duty Vehicles Transit Vehicles Trucks Idle Reduction Oil Bypass Filter Airport Ground Support Equipment Medium and Heavy Duty Hybrid Electric Vehicles

309

ANN-based residential water end-use demand forecasting model  

Science Conference Proceedings (OSTI)

Bottom-up urban water demand forecasting based on empirical data for individual water end uses or micro-components (e.g., toilet, shower, etc.) for different households of varying characteristics is undoubtedly superior to top-down estimates originating ... Keywords: Artificial neural network, Residential water demand forecasting, Water demand management, Water end use, Water micro-component

Christopher Bennett; Rodney A. Stewart; Cara D. Beal

2013-03-01T23:59:59.000Z

310

Genetic manipulation of a cyanobacterium for heavy metal detoxivication  

DOE Green Energy (OSTI)

Increasing heavy metal contamination of soil and water has produced a need for economical and effective methods to reduce toxic buildup of these materials. Biological systems use metallothionein proteins to sequester such metals as Cu, Cd, and Zn. Studies are underway to genetically engineer a cyanobacteria strain with increased ability for metallothionein production and increased sequestration capacity. Cyanobacteria require only sunlight and CO{sub 2}. Vector constructs are being developed in a naturally competent, unicellular cyanobacterium Anacystis nidulans R2. Closed copies of a yeast copper metallothionein gene have been inserted into a cyanobacterial shuttle vector as well as a vector designed for genomic integration. Transformation studies have produced recombinant cyanobacteria from both of these systems, and work is currently underway to assess the organism`s ability to withstand increasing Cu, Cd, and Zn concentrations.

McCormick, P.; Cannon, G.; Heinhorst, S.

1995-12-31T23:59:59.000Z

311

Heavy Quarks, QCD, and Effective Field Theory  

SciTech Connect

The research supported by this OJI award is in the area of heavy quark and quarkonium production, especially the application Soft-Collinear E#11;ective Theory (SCET) to the hadronic production of quarkonia. SCET is an e#11;ffective theory which allows one to derive factorization theorems and perform all order resummations for QCD processes. Factorization theorems allow one to separate the various scales entering a QCD process, and in particular, separate perturbative scales from nonperturbative scales. The perturbative physics can then be calculated using QCD perturbation theory. Universal functions with precise fi#12;eld theoretic de#12;nitions describe the nonperturbative physics. In addition, higher order perturbative QCD corrections that are enhanced by large logarithms can be resummed using the renormalization group equations of SCET. The applies SCET to the physics of heavy quarks, heavy quarkonium, and similar particles.

Thomas Mehen

2012-10-09T23:59:59.000Z

312

Pipelineable syncrude (synthetic crude) from heavy oil  

SciTech Connect

This patent describes a process for converting a metals-contaminated heavy crude oil characterized by an API gravity less than about 20{degrees} and a substantial Conradson Carbon Residue to a pipelineable and substantially upgraded syncrude with concomitant recovery of blown asphalt. It comprises: air-blowing at least the 650{degrees} F.{sup +} fraction of the heavy crude oil at a temperature of 390{degrees} to 600{degrees} F. under conditions effective to increase its combined oxygen content by at least 0.5 weight percent; deasphalting the air-blown crude oil with solvent whereby separately recovering a blown asphalt and an intermediate syncrude having a substantially lower concentration of metals and less Conradson Carbon residue than the heavy crude oil; and, visbreaking the intermediate syncrude at 800{degrees} to 950{degrees} F. and at a severity effective to impart to it pipelineable viscosity characteristics.

Rankel, L.A.

1989-06-12T23:59:59.000Z

313

Heavy Truck Clean Diesel Cooperative Research Program  

DOE Green Energy (OSTI)

This report is the final report for the Department of Energy on the Heavy Truck Engine Program (Contract No. DE-FC05-00OR22806) also known as Heavy Truck Clean Diesel (HTCD) Program. Originally, this was scoped to be a $38M project over 5 years, to be 50/50 co-funded by DOE and Caterpillar. The program started in June 2000. During the program the timeline was extended to a sixth year. The program completed in December 2006. The program goal was to develop and demonstrate the technologies required to enable compliance with the 2007 and 2010 (0.2g/bhph NOx, 0.01g/bhph PM) on-highway emission standards for Heavy Duty Trucks in the US with improvements in fuel efficiency compared to today's engines. Thermal efficiency improvement from a baseline of 43% to 50% was targeted.

Milam, David

2006-12-31T23:59:59.000Z

314

Certification of alternative aviation fuels and blend components  

SciTech Connect

Aviation turbine engine fuel specifications are governed by ASTM International, formerly known as the American Society for Testing and Materials (ASTM) International, and the British Ministry of Defence (MOD). ASTM D1655 Standard Specification for Aviation Turbine Fuels and MOD Defence Standard 91-91 are the guiding specifications for this fuel throughout most of the world. Both of these documents rely heavily on the vast amount of experience in production and use of turbine engine fuels from conventional sources, such as crude oil, natural gas condensates, heavy oil, shale oil, and oil sands. Turbine engine fuel derived from these resources and meeting the above specifications has properties that are generally considered acceptable for fuels to be used in turbine engines. Alternative and synthetic fuel components are approved for use to blend with conventional turbine engine fuels after considerable testing. ASTM has established a specification for fuels containing synthesized hydrocarbons under D7566, and the MOD has included additional requirements for fuels containing synthetic components under Annex D of DS91-91. New turbine engine fuel additives and blend components need to be evaluated using ASTM D4054, Standard Practice for Qualification and Approval of New Aviation Turbine Fuels and Fuel Additives. This paper discusses these specifications and testing requirements in light of recent literature claiming that some biomass-derived blend components, which have been used to blend in conventional aviation fuel, meet the requirements for aviation turbine fuels as specified by ASTM and the MOD. The 'Table 1' requirements listed in both D1655 and DS91-91 are predicated on the assumption that the feedstocks used to make fuels meeting these requirements are from approved sources. Recent papers have implied that commercial jet fuel can be blended with renewable components that are not hydrocarbons (such as fatty acid methyl esters). These are not allowed blend components for turbine engine fuels as discussed in this paper.

Wilson III, George R. (Southwest Research Institute, 6220 Culebra Road, San Antonio, Texas 78238 (United States)); Edwards, Tim; Corporan, Edwin (United States Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 (United States)); Freerks, Robert L. (Rentech, Incorporated, 1331 17th Street, Denver, Colorado 80202 (United States))

2013-01-15T23:59:59.000Z

315

Improvement of Plants for Selenium and Heavy Metal Phytoremediation Through Genetic Engineering  

Science Conference Proceedings (OSTI)

Phytoremediation -- the use of plants to remove, stabilize, or detoxify pollutants -- has proved very promising for the cleanup of trace elements from contaminated soil and water. Under the EPRI-Genetics Research Program, investigators successfully used genetic engineering to create seven genetically altered lines of plants with superior capacities for the phytoremediation of selenium (Se) and heavy metals, such as Molybdenum (Mo), Tungsten (W), and Cadmium (Cd). These transgenic plants are more tolerant...

1999-12-13T23:59:59.000Z

316

Heavy Nuclei from RHIC to the Cosmos  

E-Print Network (OSTI)

Ultra-relativistic heavy ion collisions produce a high-temperature, thermalized system that may mimic the conditions present shortly after the big bang. This writeup will given an overview of early results from the Relativistic Heavy Ion Collider (RHIC), and discuss what we have learned about hot, strongly interacting nuclear systems. The thermal and chemical composition of the system will be discussed, along with observables that are sensitive to the early evolution of the system. I will also discuss the implications of the RHIC results for cosmic ray air showers.

Spencer R. Klein

2002-11-01T23:59:59.000Z

317

Recent developments in heavy flavour production  

E-Print Network (OSTI)

We review one-particle inclusive production of heavy-flavoured hadrons in a framework which resums the large collinear logarithms through the evolution of the FFs and PDFs and retains the full dependence on the heavy-quark mass without additional theoretical assumptions. We focus on presenting results for the inclusive cross section for the production of charmed mesons in p anti-p collisions and the comparison with CDF data from the Tevatron as well as on inclusive B-meson production and comparison with recent CDF data. The third topic is the production of D^* mesons in photoproduction and comparison with recent H1 data from HERA.

G. Kramer

2007-07-12T23:59:59.000Z

318

1 Heavy-light physics with NRQCD  

E-Print Network (OSTI)

First results are obtained for B mesons using a heavy propagator calculated using NRQCD, and a light Wilson propagator. Results from 13 quenched configurations of size 16 3 × 48 at ? = 6.0 give a value for fB of less than 200 MeV and a B ? ?B splitting of 32(8) MeV. Superior signal/noise behaviour is observed over static propagators on the same configurations. No extrapolation to the b mass for the heavy quark is required. 1.

unknown authors

1993-01-01T23:59:59.000Z

319

Petrophysical Properties of Unconventional Low-Mobility Reservoirs (Shale Gas and Heavy Oil) by Using Newly Developed Adaptive Testing Approach  

E-Print Network (OSTI)

SPE 159172 Petrophysical Properties of Unconventional Low-Mobility Reservoirs (Shale Gas and Heavy Oil) by Using Newly Developed Adaptive Testing Approach Hamid Hadibeik, The University of Texas the dynamics of water- and oil- base mud-filtrate invasion that produce wellbore supercharging were developed

Torres-VerdĂ­n, Carlos

320

Automated cleaning of electronic components  

SciTech Connect

Environmental and operator safety concerns are leading to the elimination of trichloroethylene and chlorofluorocarbon solvents in cleaning processes that remove rosin flux, organic and inorganic contamination, and particulates from electronic components. Present processes depend heavily on these solvents for manual spray cleaning of small components and subassemblies. Use of alternative solvent systems can lead to longer processing times and reduced quality. Automated spray cleaning can improve the quality of the cleaning process, thus enabling the productive use of environmentally conscious materials, while minimizing personnel exposure to hazardous materials. We describe the development of a prototype robotic system for cleaning electronic components in a spray cleaning workcell. An important feature of the prototype system is the capability to generate the robot paths and motions automatically from the CAD models of the part to be cleaned, and to embed cleaning process knowledge into the automatically programmed operations.

Drotning, W.; Meirans, L.; Wapman, W.; Hwang, Y.; Koenig, L.; Petterson, B.

1994-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Heavy metals in bullfrog (Rana catesbeiana) tadpoles: Effects of depuration before analysis  

SciTech Connect

Although tadpoles may well be excellent organisms to use as bioindicators of heavy metal contamination, the relationship of deposition in the body compared to the tail, and the effect of sediments or other debris in the digestive tract on heavy metal concentrations is unknown. The authors examined the effect of experimental depuration of bullfrog (Rana catesbeiana) tadpoles on heavy metal and selenium concentrations in intact tadpoles, as well as their bodies and tails. They defined depuration in this experiment as allowing defecation as an elimination process for intestinal contents. The authors maintained wild-caught tadpoles in clean water for 0, 24, 48, and 72 h to determine the effects of clearing on heavy metal concentrations. They also examined the concentrations of heavy metals in the whole body and digestive tract separately. The authors test the null hypotheses that no differences occur in metals as a function of time in uncontaminated water, and that no differences occur in metal concentrations in the body compared to the tail and to the digestive tract. They rejected these hypotheses based on regression models. Variance in concentrations of chromium (77%) and lead (70%) were explained by part and clearing time; for manganese (80%), mercury (64%), selenium (28%), and cadmium (25%) the variation was explained only by body part; for arsenic (53%), the variation was explained by part, clearing time, and weight of the various parts. For those metals in which clearing time explained part of the variation, metal concentrations in both the body and tail decreased after 24 and 48 h, but increased slightly thereafter. Clearing, however, did not greatly decrease metal concentrations in either the body or tail. These data suggest that for some metals (mercury, manganese, cadmium, selenium), clearing has no effect, and for others the effect is slight. For fresh tadpoles, however, the digestive tract contained significantly higher concentrations of all metals than either the body or head, probably reflecting metals absorbed to sediment particles in the gut.

Burger, J. [Rutgers Univ., Piscataway, NJ (United States); Snodgrass, J. [Rutgers Univ., Piscataway, NJ (United States)]|[Savannah River Ecology Lab., Aiken, SC (United States)

1998-11-01T23:59:59.000Z

322

A Blended Satellite Total Precipitable Water Product for Operational Forecasting  

Science Conference Proceedings (OSTI)

Total precipitable water (TPW), the amount of water vapor in a column from the surface of the earth to space, is used by forecasters to predict heavy precipitation. In this paper, a process for blending TPW values retrieved from two satellite ...

Stanley Q. Kidder; Andrew S. Jones

2007-01-01T23:59:59.000Z

323

YEAR-END REPORT: HEAVY ION FUSION PROGRAM  

E-Print Network (OSTI)

1978-Mar. 1979, Heavy Ion Fusion Program, Lawrence BerkeleyOlson, Proceedings of the Heavy Ion Fusion Workshop, ArgonneUniversity Ravi N. Sudan KMS Fusion, Inc. Stanford Linear

Fusion Staff, Heavy Ion

2010-01-01T23:59:59.000Z

324

INERTIAL FUSION DRIVEN BY INTENSE HEAVY-ION BEAMS  

E-Print Network (OSTI)

HIFAN 1830 INERTIAL FUSION DRIVEN BY INTENSE HEAVY-ION BEAMSAC02-05CH11231. INERTIAL FUSION DRIVEN BY INTENSE HEAVY-ION467 (1992). [38] R. W. Moir, Fusion Tech. 25, 5 (1994) [39

Sharp, W. M.

2011-01-01T23:59:59.000Z

325

Twisted mass QCD and the FNAL heavy quark formalism  

E-Print Network (OSTI)

At tree level, I discuss modifying the FNAL heavy quark formalism to include a twisted mass term. I find that at maximal twist the so called KLM factor is independent of the heavy mass.

Craig McNeile

2008-10-21T23:59:59.000Z

326

Analysis of a Heavy Rainfall Event during TAMEX  

Science Conference Proceedings (OSTI)

A heavy rainfall event during the Taiwan Area Mesoscale Experiment intensive observing period 13 has been studied using upper-air, surface mesonet, and dual-Doppler radar data. The heavy rainfall (?231 mm day?1) occurred over northwestern Taiwan ...

Jun Li; Yi-Leng Chen; Wen-Chau Lee

1997-06-01T23:59:59.000Z

327

Texas Refinery Catalytic Hydrotreating, Heavy Gas Oil Downstream ...  

U.S. Energy Information Administration (EIA)

Hydro. Heavy Gas Oil Downstream Charge Capacity (B/SD)y ; Cat. Hydro. Heavy Gas Oil Downstream Charge Capacity (B/SD)y ; Texas Downstream Charge Capacity of Operable ...

328

Vehicle Technologies Office: Fact #363: March 14, 2005 Heavy...  

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

3: March 14, 2005 Heavy Truck Miles by Age to someone by E-mail Share Vehicle Technologies Office: Fact 363: March 14, 2005 Heavy Truck Miles by Age on Facebook Tweet about...

329

The high current transport experiment for heavy ion inertial fusion  

E-Print Network (OSTI)

on Heavy Ion Inertial Fusion, Princeton, 1996, edited by J.Conference on Inertial Fusion Sciences and Applications (FOR HEAVY ION INERTIAL FUSION 1 L. R. Prost, D. Baca, F. M.

2004-01-01T23:59:59.000Z

330

The Modular Point Design for Heavy Ion Fusion  

E-Print Network (OSTI)

POINT DESIGN FOR HEAVY ION FUSION S.S. Yu 1 , J.J. BarnardUpdated Point Design for Heavy Ion Fusion,” Proc. 2002 Amer.Nucl. Soc. Fusion Topical Meeting, 17-21 November 2002,

2004-01-01T23:59:59.000Z

331

Characteristics of water chemistry in heavy water recovery system of nuclear power plant  

Science Conference Proceedings (OSTI)

The moisture inside the coolant and moderator system areas of Candu-type nuclear power plant is recycled to prevent the deuterium of value from being lost and the tritium of harm from being spread to the natural environment. The deuterium is separated ... Keywords: anion, breakthrough time, cation, deuterium recovery, ion exchange, resin ratio

In Hyoung Rhee; Hyun Kyoung Ahn; Hyun Jun Jeong

2007-02-01T23:59:59.000Z

332

Heavy metals behaviour in a gasification reactor  

Science Conference Proceedings (OSTI)

Sludge coming from cleaning processes of wastewater, Municipal Solid Waste (MSW), and Refuse Derived Fuel (RDF) can be exploited for producing energy because of their heating value. Cleaning the produced syngas is important because of environmental troubles, ... Keywords: heavy metals, syngas, thermodynamic, waste gasification

Martino Paolucci; Carlo Borgianni; Paolo De Filippis

2011-07-01T23:59:59.000Z

333

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Towards Heavy Fermions in Europium Intermetallic Compounds Towards Heavy Fermions in Europium Intermetallic Compounds Print Wednesday, 29 July 2009 00:00 For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische Universität Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

334

Joint resummation for heavy quark production  

E-Print Network (OSTI)

We present joint threshold and recoil resummed transverse momentum distributions for heavy quark hadroproduction, at next-to-leading logarithmic accuracy. We study the dependence of these distributions on the production channel, the color configurations and the differences with the pure threshold-resummed distribution.

Andrea Banfi; Eric Laenen

2004-11-18T23:59:59.000Z

335

Carbon foils as heavy ion strippers  

SciTech Connect

A discussion is given of the advantages and disadvantages of thin carbon foil strippers for heavy ion beams from tandem electrostatic accelerators. Foil lifetimes were increased by radiative heating and by the evaporation of a thin layer of gold on the foil. (PMA)

Yntema, J.L.

1975-01-01T23:59:59.000Z

336

Scaling in heavy-fermion systems  

SciTech Connect

Ambient pressure characteristics of heavy-fermion compounds, such as the ratio of the low temperature magnetic susceptibility to the electronic specific heat coefficient {gamma} and a simple relationship between the T{sup 2}-coefficient of resistivity and {gamma}{sup 2}, suggest that a single-energy scale T{sub o} dictates the physics of these materials. Such is the case for Kondo-impurity systems to which heavy-fermions are related. We consider the consequences of assuming that the electronic free energy is given by a universal function of T/T{sub o} (V) where V is the molar volume. We show that volume-dependent magnetic susceptibility, specific heat and electrical resistivity of some heavy-fermion compounds scale as T/T{sub o} (V), at least over a range in pressures and temperatures. A further consequence of the principle assumption is that Gruneisen parameters defined as - {partial_derivative}{ell}nX/{partial_derivative}nV, where X is some physical property, should be identical for all properties and equal to that determined from electronic contributions to the volume- thermal expansion coefficient and specific heat. In several materials, this equality holds, at least approximately. Although evidence is found for single-energy scaling in heavy-fermion materials, we cannot conclude unambiguously that the basic assumption is correct in detail.

Thompson, J.D.; Fisk, Z. [Los Alamos National Lab., NM (United States); Lawrence, J.M. [California Univ., Irvine, CA (United States). Dept. of Physics

1993-12-31T23:59:59.000Z

337

Thermal processes for heavy oil recovery  

Science Conference Proceedings (OSTI)

This status report summarizes the project BE11B (Thermal Processes for Heavy Oil Recovery) research activities conducted in FY93 and completes milestone 7 of this project. A major portion of project research during FY93 was concentrated on modeling and reservoir studies to determine the applicability of steam injection oil recovery techniques in Texas Gulf Coast heavy oil reservoirs. In addition, an in-depth evaluation of a steamflood predictive model developed by Mobil Exploration and Production Co. (Mobil E&P) was performed. Details of these two studies are presented. A topical report (NIPER-675) assessing the NIPER Thermal EOR Research Program over the past 10 years was also written during this fiscal year and delivered to DOE. Results of the Gulf Coast heavy oil reservoir simulation studies indicated that though these reservoirs can be successfully steamflooded and could recover more than 50% of oil-in-place, steamflooding may not be economical at current heavy oil prices. Assessment of Mobil E&P`s steamflood predictive model capabilities indicate that the model in its present form gives reasonably good predictions of California steam projects, but fails to predict adequately the performance of non-California steam projects.

Sarkar, A.K.; Sarathi, P.S.

1993-11-01T23:59:59.000Z

338

Talon Heavy Hoist and Safety Latch  

Engineers at the Savannah River Site (SRS) have devised a new design for a latching hoist hook with remote unlatching capabilities.  The TalonTM hoist hook and safety latch is designed for lifting heavy loads as well as locking the load in place with ...

339

A cost analysis model for heavy equipment  

Science Conference Proceedings (OSTI)

Total cost is one of the most important factors for a heavy equipment product purchase decision. However, the different cost views and perspectives of performance expectations between the different involved stakeholders may cause customer relation problems ... Keywords: Cost responsibilities, Operating costs, Ownership costs, Post-Manufacturing Product Cost (PMPC), System life-cycle cost

Shibiao Chen; L. Ken Keys

2009-05-01T23:59:59.000Z

340

Some Common Ingredients for Heavy Orographic Rainfall  

Science Conference Proceedings (OSTI)

The purpose of this paper is to synthesize some common synoptic and mesoscale environments conducive to heavy orographic rainfall. Previous studies of U.S. and Alpine cases and new analyses of some Alpine and east Asian cases have shown the ...

Yuh-Lang Lin; Sen Chiao; Ting-An Wang; Michael L. Kaplan; Ronald P. Weglarz

2001-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

U.S. Refinery Catalytic Hydrotreating, Heavy Gas Oil ...  

U.S. Energy Information Administration (EIA)

U.S. Refinery Catalytic Hydrotreating, Heavy Gas Oil Downstream Charge Capacity as of January 1 (Barrels per Stream Day)

342

The CCSM4 Ocean Component  

Science Conference Proceedings (OSTI)

The ocean component of the Community Climate System Model version 4 (CCSM4) is described, and its solutions from the twentieth-century (20C) simulations are documented in comparison with observations and those of CCSM3. The improvements to the ...

Gokhan Danabasoglu; Susan C. Bates; Bruce P. Briegleb; Steven R. Jayne; Markus Jochum; William G. Large; Synte Peacock; Steve G. Yeager

2012-03-01T23:59:59.000Z

343

Automotive Component Product Development Enhancement  

E-Print Network (OSTI)

Optimization In an Integrated Concurrent Engineering Framework by Massimo Usan M. S. Aeronautical Engineering of the Requirements for the Degree of Master of Science in Engineering and Management at the Massachusetts Institute Engineering Systems Division #12;Automotive Component Product Development Enhancement Through Multi

344

Large Component Removal/Disposal  

Science Conference Proceedings (OSTI)

This paper describes the removal and disposal of the large components from Maine Yankee Atomic Power Plant. The large components discussed include the three steam generators, pressurizer, and reactor pressure vessel. Two separate Exemption Requests, which included radiological characterizations, shielding evaluations, structural evaluations and transportation plans, were prepared and issued to the DOT for approval to ship these components; the first was for the three steam generators and one pressurizer, the second was for the reactor pressure vessel. Both Exemption Requests were submitted to the DOT in November 1999. The DOT approved the Exemption Requests in May and July of 2000, respectively. The steam generators and pressurizer have been removed from Maine Yankee and shipped to the processing facility. They were removed from Maine Yankee's Containment Building, loaded onto specially designed skid assemblies, transported onto two separate barges, tied down to the barges, th en shipped 2750 miles to Memphis, Tennessee for processing. The Reactor Pressure Vessel Removal Project is currently under way and scheduled to be completed by Fall of 2002. The planning, preparation and removal of these large components has required extensive efforts in planning and implementation on the part of all parties involved.

Wheeler, D. M.

2002-02-27T23:59:59.000Z

345

Component-based LR parsing  

Science Conference Proceedings (OSTI)

A language implementation with proper compositionality enables a compiler developer to divide-and-conquer the complexity of building a large language by constructing a set of smaller languages. Ideally, these small language implementations should be ... Keywords: Component-based software development, LR parsing, Parser generator

Xiaoqing Wu; Barrett R. Bryant; Jeff Gray; Marjan Mernik

2010-04-01T23:59:59.000Z

346

MCFC component development at ANL.  

DOE Green Energy (OSTI)

Argonne National Laboratory is developing advanced cathode and electrolyte components for the molten carbonate fuel cell (MCFC). Working in support of the MCFC developers, the goal of this effort is to extend the life of the MCFC cell and to improve its performance.

Bloom, I.

1998-09-15T23:59:59.000Z

347

Waste Package Component Design Methodology Report  

Science Conference Proceedings (OSTI)

This Executive Summary provides an overview of the methodology being used by the Yucca Mountain Project (YMP) to design waste packages and ancillary components. This summary information is intended for readers with general interest, but also provides technical readers a general framework surrounding a variety of technical details provided in the main body of the report. The purpose of this report is to document and ensure appropriate design methods are used in the design of waste packages and ancillary components (the drip shields and emplacement pallets). The methodology includes identification of necessary design inputs, justification of design assumptions, and use of appropriate analysis methods, and computational tools. This design work is subject to ''Quality Assurance Requirements and Description''. The document is primarily intended for internal use and technical guidance for a variety of design activities. It is recognized that a wide audience including project management, the U.S. Department of Energy (DOE), the U.S. Nuclear Regulatory Commission, and others are interested to various levels of detail in the design methods and therefore covers a wide range of topics at varying levels of detail. Due to the preliminary nature of the design, readers can expect to encounter varied levels of detail in the body of the report. It is expected that technical information used as input to design documents will be verified and taken from the latest versions of reference sources given herein. This revision of the methodology report has evolved with changes in the waste package, drip shield, and emplacement pallet designs over many years and may be further revised as the design is finalized. Different components and analyses are at different stages of development. Some parts of the report are detailed, while other less detailed parts are likely to undergo further refinement. The design methodology is intended to provide designs that satisfy the safety and operational requirements of the YMP. Four waste package configurations have been selected to illustrate the application of the methodology during the licensing process. These four configurations are the 21-pressurized water reactor absorber plate waste package (21-PWRAP), the 44-boiling water reactor waste package (44-BWR), the 5 defense high-level radioactive waste (HLW) DOE spent nuclear fuel (SNF) codisposal short waste package (5-DHLWDOE SNF Short), and the naval canistered SNF long waste package (Naval SNF Long). Design work for the other six waste packages will be completed at a later date using the same design methodology. These include the 24-boiling water reactor waste package (24-BWR), the 21-pressurized water reactor control rod waste package (21-PWRCR), the 12-pressurized water reactor waste package (12-PWR), the 5 defense HLW DOE SNF codisposal long waste package (5-DHLWDOE SNF Long), the 2 defense HLW DOE SNF codisposal waste package (2-MC012-DHLW), and the naval canistered SNF short waste package (Naval SNF Short). This report is only part of the complete design description. Other reports related to the design include the design reports, the waste package system description documents, manufacturing specifications, and numerous documents for the many detailed calculations. The relationships between this report and other design documents are shown in Figure 1.

D.C. Mecham

2004-07-12T23:59:59.000Z

348

LYSINE, METHIONINE AND CYSTINE REQUIREMENTS OF SEMI-HEAVY LAYERS  

E-Print Network (OSTI)

LYSINE, METHIONINE AND CYSTINE REQUIREMENTS OF SEMI-HEAVY LAYERS M. PICARD S. BERTRAND J. SALVERT Service zootechnique, A. E. C., 03600 Commentry Two different strains of commercial semi-heavy layers of lysine. This trial confirms our previous works. A semi-heavy layer is largely satisfied by a feed

Recanati, Catherine

349

BUCSTR2000017 1 TCP Congestion Control and Heavy Tails  

E-Print Network (OSTI)

BUCS­TR­2000­017 1 TCP Congestion Control and Heavy Tails LIANG GUO MARK CROVELLA IBRAHIM MATTA­ ies have shown that there is a close relationship between heavy­tailed distribution of various traffic traffic with heavy­tailed OFF, or idle, periods, and therefore introduces long­range de­ pendence

Texas at Arlington, University of

350

Efficient Algorithms for Heavy-Tail Analysis under Interval Uncertainty  

E-Print Network (OSTI)

Efficient Algorithms for Heavy-Tail Analysis under Interval Uncertainty Vladik Kreinovich1 heavy-tailed distri- butions, i.e., distributions in which (x) decreases as (x) x- . To properly take for computing these ranges. Keywords: heavy-tailed distributions, interval uncertainty, efficient algorithms

Kreinovich, Vladik

351

In-situ continuous water monitoring system  

DOE Patents (OSTI)

An in-situ continuous liquid monitoring system for continuously analyzing volatile components contained in a water source comprises: a carrier gas supply, an extraction container and a mass spectrometer. The carrier gas supply continuously supplies the carrier gas to the extraction container and is mixed with a water sample that is continuously drawn into the extraction container by the flow of carrier gas into the liquid directing device. The carrier gas continuously extracts the volatile components out of the water sample. The water sample is returned to the water source after the volatile components are extracted from it. The extracted volatile components and the carrier gas are delivered continuously to the mass spectrometer and the volatile components are continuously analyzed by the mass spectrometer.

Thompson, Cyril V. (Knoxville, TN); Wise, Marcus B. (Kingston, TN)

1998-01-01T23:59:59.000Z

352

Turbid water Clear water  

E-Print Network (OSTI)

: The submersible laser bathymetric (LBath) optical system is capable of simultaneously providing visual images- dynamical wing. This underwater package is pulled through the water by a single towed cable with fiber optic special high energy density optical fibers. A remote Pentium based PC also at the surface is used

Jaffe, Jules

353

Effect of temperature on wave velocities in sands and sandstones with heavy hydrocarbons  

SciTech Connect

A laboratory investigation was made of the effects of temperature on wave velocities in well cemented Massillon and Boise sandstones and unconsolidated Ottawa sand saturated with heavy hydrocarbons, as well as the dependence of compressional velocities in the hydrocarbons themselves as a function of temperature. The hydrocarbons selected as pore saturants were a commercial paraffin wax, 1-Eicosene, natural heavy crude, and natural tar. The experimental results show that the compressional wave velocities in the hydrocarbons decrease markedly with increasing temperature. In contrast wave velocities in the Massillon and Boise sandstones and unconsolidated Ottawa sand saturated with air or water decrease only little with increasing temperatures. The main reason for the large decreases in rocks with hydrocarbons is the melting of solid hydrocarbons, and high pore pressure. Thermal expansion of the saturants, and possibly thermal cracking of the heavy fractions and vaporization of the light fractions of the hydrocarbons may also contribute. The large decreases of the compressional and shear wave velocities in the hydrocarbon-saturated rocks and sands with temperature, suggest that seismic measurements such as used in seismology or borehole tomography may be very useful in detecting steam fronts in heavy hydrocarbon reservoirs undergoing steam flooding.

Wang, Z.; Nur, A.M.

1986-01-01T23:59:59.000Z

354

,,,,,,"Coal Components",,,"Coke",,,"Electricity Components",,,,,,,,,,,,,,"Natural Gas Components",,,"Steam Components"  

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

2 Relative Standard Errors for Table 7.2;" 2 Relative Standard Errors for Table 7.2;" " Unit: Percents." ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Selected Wood and Other Biomass Components" ,,,,,,"Coal Components",,,"Coke",,,"Electricity Components",,,,,,,,,,,,,,"Natural Gas Components",,,"Steam Components" " "," ",,,,,,,,,,,,,"Total",,,,,,,,,,,,,,,,,,,,,,,"Wood Residues",,,," " " "," "," ",,,,,"Bituminous",,,,,,"Electricity","Diesel Fuel",,,,,,"Motor",,,,,,,"Natural Gas",,,"Steam",,,," ",,,"and","Wood-Related","All"

355

,,,,,,"Coal Components",,,"Coke",,,"Electricity Components",,,,,,,,,,,,,,"Natural Gas Components",,,"Steam Components"  

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

Relative Standard Errors for Table 7.1;" Relative Standard Errors for Table 7.1;" " Unit: Percents." ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Selected Wood and Other Biomass Components" ,,,,,,"Coal Components",,,"Coke",,,"Electricity Components",,,,,,,,,,,,,,"Natural Gas Components",,,"Steam Components" " "," ",,,,,,,,,,,,,"Total",,,,,,,,,,,,,,,,,,,,,,,"Wood Residues",,,," " " "," "," ",,,,,"Bituminous",,,,,,"Electricity","Diesel Fuel",,,,,,"Motor",,,,,,,"Natural Gas",,,"Steam",,,," ",,,"and","Wood-Related","All"

356

Gas Turbine Technology, Part B: Components, Operations and Maintenance  

E-Print Network (OSTI)

This paper builds on Part A and discusses the hardware involved in gas turbines as well as operations and maintenance aspects pertinent to cogeneration plants. Different categories of gas turbines are reviewed such as heavy duty aeroderivative, single and split shaft. The pros and cons of different types are reviewed. Gas turbine component types - axial and centrifugal compressors and different turbine types, along with combustor types will be discussed. Important considerations during machine specifications are also reviewed. Practical aspects such as coatings, materials, fuel handling and auxiliary systems will also be highlighted. Operations and maintenance aspects including Preventative Maintenance, Repairs, Fuel and Air Filtration, Compressor Washing and Reliability is discussed. Typical operating and maintenance costs are provided. This paper presents an extensive bibliography to enable readers to follow up any topic in detail.

Meher-Homji, C. B.; Focke, A. B.

1985-05-01T23:59:59.000Z

357

High temperature solid lubricant materials for heavy duty and advanced heat engines  

DOE Green Energy (OSTI)

Advanced engine designs incorporate higher mechanical and thermal loading to achieve efficiency improvements. This approach often leads to higher operating temperatures of critical sliding elements (e.g. piston ring/cylinder wall contacts and valve guides) which compromise the use of conventional and even advanced synthetic liquid lubricants. For these applications solid lubricants must be considered. Several novel solid lubricant composites and coatings designated PS/PM200 have been employed to dry and marginally oil lubricated contacts in advanced heat engines. These applications include cylinder kits of heavy duty diesels, and high temperature sterling engines, sidewall seals of rotary engines and various exhaust valve and exhaust component applications. The following paper describes the tribological and thermophysical properties of these tribomaterials and reviews the results of applying them to engine applications. Other potential tribological materials and applications are also discussed with particular emphasis to heavy duty and advanced heat engines.

DellaCorte, C.; Wood, J.C.

1994-10-01T23:59:59.000Z

358

Opportunities for Low Cost Titanium in Reduced Fuel Consumption, Improved Emissions, and Enhanced Durability Heavy Duty Vehicles  

DOE Green Energy (OSTI)

The purpose of this study was to determine which components of heavy-duty highway vehicles are candidates for the substitution of titanium materials for current materials if the cost of those Ti components is very significantly reduced from current levels. The processes which could be used to produce those low cost components were also investigated. Heavy-duty highway vehicles are defined as all trucks and busses included in Classes 2C through 8. These include heavy pickups and vans above 8,500 lbs. GVWR, through highway tractor trailers. Class 8 is characterized as being a very cyclic market, with ''normal'' year volume, such as in 2000, of approximately 240,000 new vehicles. Classes 3-7 are less cyclic, with ''normal'' i.e., year 2000, volume totaling approximately 325,000 new vehicles. Classes 3-8 are powered about 88.5% by diesel engines, and Class 2C at very roughly 83% diesel. The engine portion of the study therefore focused on diesels. Vehicle production volumes were used in estimates of the market size for candidate components.

Kraft, E.H.

2002-07-22T23:59:59.000Z

359

Nuclear component horizontal seismic restraint  

DOE Patents (OSTI)

A nuclear component horizontal seismic restraint. Small gaps limit horizontal displacement of components during a seismic occurrence and therefore reduce dynamic loadings on the free lower end. The reactor vessel and reactor guard vessel use thicker section roll-forged rings welded between the vessel straight shell sections and the bottom hemispherical head sections. The inside of the reactor guard vessel ring forging contains local vertical dovetail slots and upper ledge pockets to mount and retain field fitted and installed blocks. As an option, the horizontal displacement of the reactor vessel core support cone can be limited by including shop fitted/installed local blocks in opposing alignment with the reactor vessel forged ring. Beams embedded in the wall of the reactor building protrude into apertures in the thermal insulation shell adjacent the reactor guard vessel ring and have motion limit blocks attached thereto to provide to a predetermined clearance between the blocks and reactor guard vessel ring.

Snyder, Glenn J. (Lynchburg, VA)

1988-01-01T23:59:59.000Z

360

Water Intoxication  

E-Print Network (OSTI)

2008, May 14). Too much water raises seizure risk in babies.id=4844 9. Schoenly, Lorry. “Water Intoxication and Inmates:article/246650- overview>. 13. Water intoxication alert. (

Lingampalli, Nithya

2013-01-01T23:59:59.000Z

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


361

How Total Precipitable Water Vapor Anomalies Relate to Cloud Vertical Structure  

Science Conference Proceedings (OSTI)

The NOAA operational total precipitable water (TPW) anomaly product is available to forecasters to display percentage of normal TPW in real time for applications like heavy precipitation forecasts. In this work, the TPW anomaly is compared to ...

John M. Forsythe; Jason B. Dodson; Philip T. Partain; Stanley Q. Kidder; Thomas H. Vonder Haar

2012-04-01T23:59:59.000Z

362

16. Heavy-Quark and Soft-Collinear Effective Theory 1 16. Heavy-Quark and Soft-Collinear Effective Theory  

E-Print Network (OSTI)

16. Heavy-Quark and Soft-Collinear Effective Theory 1 16. Heavy-Quark and Soft-Collinear Effective the quantum fluctuations of such heavy particles are "integrated out" from the generating functional integral.lbl.gov) February 16, 2012 14:07 #12;2 16. Heavy-Quark and Soft-Collinear Effective Theory 16.2. Heavy

363

Pharmaceutical Waters  

Science Conference Proceedings (OSTI)

Table 3   Water treatment process for water for injection (WFI)...deionization WFI production Evaporation still or vapor compression...

364

Water Snakes  

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

of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation WATER SNAKES Contrary to popular belief, the Water Moccasin commonly known as the...

365

Vehicle Technologies Office: FY 2003 Progress Report for Heavy Vehicle  

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

3 Progress Report 3 Progress Report for Heavy Vehicle Propulsion Materials Program to someone by E-mail Share Vehicle Technologies Office: FY 2003 Progress Report for Heavy Vehicle Propulsion Materials Program on Facebook Tweet about Vehicle Technologies Office: FY 2003 Progress Report for Heavy Vehicle Propulsion Materials Program on Twitter Bookmark Vehicle Technologies Office: FY 2003 Progress Report for Heavy Vehicle Propulsion Materials Program on Google Bookmark Vehicle Technologies Office: FY 2003 Progress Report for Heavy Vehicle Propulsion Materials Program on Delicious Rank Vehicle Technologies Office: FY 2003 Progress Report for Heavy Vehicle Propulsion Materials Program on Digg Find More places to share Vehicle Technologies Office: FY 2003 Progress Report for Heavy Vehicle Propulsion Materials Program on

366

Vehicle Technologies Office: FY 2004 Progress Report for Heavy Vehicle  

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

4 Progress Report 4 Progress Report for Heavy Vehicle Propulsion Materials Program to someone by E-mail Share Vehicle Technologies Office: FY 2004 Progress Report for Heavy Vehicle Propulsion Materials Program on Facebook Tweet about Vehicle Technologies Office: FY 2004 Progress Report for Heavy Vehicle Propulsion Materials Program on Twitter Bookmark Vehicle Technologies Office: FY 2004 Progress Report for Heavy Vehicle Propulsion Materials Program on Google Bookmark Vehicle Technologies Office: FY 2004 Progress Report for Heavy Vehicle Propulsion Materials Program on Delicious Rank Vehicle Technologies Office: FY 2004 Progress Report for Heavy Vehicle Propulsion Materials Program on Digg Find More places to share Vehicle Technologies Office: FY 2004 Progress Report for Heavy Vehicle Propulsion Materials Program on

367

EERE Postdoctoral Research Awards: Application Components  

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

Application Components to someone by E-mail Share EERE Postdoctoral Research Awards: Application Components on Facebook Tweet about EERE Postdoctoral Research Awards: Application...

368

Method for separating disparate components in a fluid stream  

DOE Patents (OSTI)

The invention provides a method of separating a mixed component waste stream in a centrifugal separator. The mixed component waste stream is introduced into the separator and is centrifugally separated within a spinning rotor. A dual vortex separation occurs due to the phase density differences, with the phases exiting the rotor distinct from one another. In a preferred embodiment, aqueous solutions of organics can be separated with up to 100% efficiency. The relatively more dense water phase is centrifugally separated through a radially outer aperture in the separator, while the relatively less dense organic phase is separated through a radially inner aperture.

Meikrantz, David H. (Idaho Falls, ID)

1990-01-01T23:59:59.000Z

369

Electrochemical sensor for monitoring electrochemical potentials of fuel cell components  

DOE Patents (OSTI)

An electrochemical sensor comprised of wires, a sheath, and a conduit can be utilized to monitor fuel cell component electric potentials during fuel cell shut down or steady state. The electrochemical sensor contacts an electrolyte reservoir plate such that the conduit wicks electrolyte through capillary action to the wires to provide water necessary for the electrolysis reaction which occurs thereon. A voltage is applied across the wires of the electrochemical sensor until hydrogen evolution occurs at the surface of one of the wires, thereby forming a hydrogen reference electrode. The voltage of the fuel cell component is then determined with relation to the hydrogen reference electrode.

Kunz, Harold R. (Vernon, CT); Breault, Richard D. (Coventry, CT)

1993-01-01T23:59:59.000Z

370

Implications to Heavy-Duty Diesel Emissions  

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

ORNL/TM-200015 ORNL/TM-200015 MANAGED BY UT-BATTELLE FOR THE DEPARTMENT OF ENERGY A Vector Approach to Regression Analysis and Its Implications to Heavy-Duty Diesel Emissions November 2000 Prepared by H. 1. McAdams AccaMath Services Carrolton, Illinois R. W. Crawford R.W. Crawford Energy Systems Tucson, Arizona G. R. Hadder Oak Ridge National Laboratory Oak Ridge, Tennessee - UT-BATTELLE -. ORNL-27 (4.00) II ORNL/TM-200015 A VECTOR APPROACH TO REGRESSION ANALYSIS AND ITS APPLICATION TO HEAVY-DUTY DIESEL EMISSIONS H. T. McAdams AccaMath Services Carrollton, Illinois R. W. Crawford RWCrawford Energy Systems Tucson, Arizona G. R. Hadder Oak Ridge National Laboratory Oak Ridge, Tennessee November 2000 Prepared for Office of Energy Effkiency and Renewable Energy

371

Medium energy heavy ion operations at RHIC  

Science Conference Proceedings (OSTI)

As part of the search for a phase transition or critical point on the QCD phase diagram, an energy scan including 5 different energy settings was performed during the 2010 RHIC heavy ion run. While the top beam energy for heavy ions is at 100 GeV/n and the lowest achieved energy setpoint was significantly below RHICs injection energy of approximately 10 GeV/n, we also provided beams for data taking in a medium energy range above injection energy and below top beam energy. This paper reviews RHIC experience and challenges for RHIC medium energy operations that produced full experimental data sets at beam energies of 31.2 GeV/n and 19.5 GeV/n. The medium energy AuAu run covered two beam energies, both above the RHIC injection energy of 9.8 GeV but well below the standard store energy of 100 GeV (see table 1). The low energy and full energy runs with heavy ions in FY10 are summarized in [1] and [2]. Stochastic Cooling ([3]) was only used for 100 GeV beams and not used in the medium energy run. The efficiency of the transition from 100 GeV operation to 31.2 GeV and then to 19.5 GeV was remarkable. Setup took 32 h and 19 h respectively for the two energy settings. The time in store, defined to be the percentage of time RHIC provides beams in physics conditions versus calendar time, was approximately 52% for the entire FY10 heavy ion run. In both medium energy runs it was well above this average, 68% for 31.5 GeV and 82% for 19.5 GeV. For both energies RHIC was filled with 111 bunches with 1.2 10{sup 9} and 1.3 10{sup 9} ions per bunch respectively.

Drees, K.A.; Ahrens, L.; Bai, M.; Beebe-Wang, J.; Blackler, I.M.C.; Blaskiewicz, M.; Brown, K.A.; Brennan, M.; Bruno, D.; Butler, J.; Carlson, C.; Connolly, R.; D'Ottavio, T.; Fischer, W.; Fu, W.; Gassner, D.; Harvey, M.; Hayes, T.; Huang, H.; Hulsart, R.; Ingrassia, P.; Kling, N.; Lafky, M.; Laster, J.; Lee, R.C.; Litvinenko, V.; Luo, Y.; MacKay, W.W.; Marr, G.; Mapes. M.; Marusic, A.; Mernick, K.; Michnoff, R.; Minty, M.; Montag, C.; Morris, J.; Naylor, C.; Nemesure, S.; Pilat, F.; Ptitsyn, V.; Robert-Demolaize, G.; Roser, T.; Sampson, P.; Satogata, T.; Schoefer, V.; Schultheiss, C.; Severino, F.; Shrey, T.; Smith, K.S.; Tepikian, S.; Thieberger, P.; Trbojevic, D.; Tsoupas, N.; Tuozzolo, J.; van Kuik, B.; Wilinski, M.; Zaltsman, A.; Zeno, K.; Zhang, S.Y.

2011-03-28T23:59:59.000Z

372

A Radiographic Technique With Heavy Ion Microbeams  

SciTech Connect

In this work, we introduce a new technique to perform densitometric and multielemental analysis of samples at the same time using a simple detector with heavy ion micro-beams. It consists in the simultaneous analysis of X-rays induced in the sample and in a secondary target arranged behind the specimen. The X-rays originated in the secondary target are attenuated when crossing the specimen producing a radiographic image with a monochromatic source.

Muscio, J. [ECyT, UNSAM, 1650 San Martin, Buenos Aires (Argentina); Somacal, H.; Burlon, A. A.; Debray, M. E.; Valda, A. A. [ECyT, UNSAM, 1650 San Martin, Buenos Aires (Argentina); U.A. Fisica, Laboratorio TANDAR, CNEA, 1650 San Martin, Buenos Aires (Argentina); Kreiner, A. J. [U.A. Fisica, Laboratorio TANDAR, CNEA, 1650 San Martin, Buenos Aires (Argentina); ECyT, UNSAM, 1650 San Martin, Buenos Aires (Argentina); CONICET (Argentina); Kesque, J. M.; Minsky, D. M. [U.A. Fisica, Laboratorio TANDAR, CNEA, 1650 San Martin, Buenos Aires (Argentina)

2007-02-12T23:59:59.000Z

373

Heavy flavour physics from top to bottom  

SciTech Connect

We review the status of heavy flavour physics at the Fermilab Tevatron collider by summarizing recent top quark and B physics results from CDF and D0. In particular we discuss the measurement of the top quark mass and top production cross section as well as B meson lifetimes and time dependent B{anti B} mixing results. An outlook of perspectives for top and B physics in Run II starting in 1999 is also given.

Paulini, M. [Lawrence Berkeley National Lab., CA (United States); CDF and D0 Collaboration

1998-02-01T23:59:59.000Z

374

Lifecycle-analysis for heavy vehicles.  

DOE Green Energy (OSTI)

Various alternative fuels and improved engine and vehicle systems have been proposed in order to reduce emissions and energy use associated with heavy vehicles (predominantly trucks). For example, oil companies have proposed improved methods for converting natural gas to zero-aromatics, zero-sulfur diesel fuel via the Fischer-Tropsch process. Major heavy-duty diesel engine companies are working on ways to simultaneously reduce particulate-matter and NOX emissions. The trend in heavy vehicles is toward use of lightweight materials, tires with lower rolling resistance, and treatments to reduce aerodynamic drag. In this paper, we compare the Mecycle energy use and emissions from trucks using selected alternatives, such as Fisher-Tropsch diesel fuel and advanced fuel-efficient engines. We consider heavy-duty, Class 8 tractor-semitrailer combinations for this analysis. The total life cycle includes production and recycling of the vehicle itself, extraction, processing, and transportation of the fuel itself, and vehicle operation and maintenance. Energy use is considered in toto, as well as those portions that are imported, domestic, and renewable. Emissions of interest include greenhouse gases and criteria pollutants. Angonne's Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model is used to generate per-vehicle fuel cycle impacts. Energy use and emissions for materials manufacturing and vehicle disposal are estimated by means of materials information from Argonne studies. We conclude that there are trade-offs among impacts. For example, the lowest fossil energy use does not necessarily result in lowest total energy use, and lower tailpipe emissions may not necessarily result in lower lifecycle emissions of all criteria pollutants.

Gaines, L.

1998-04-16T23:59:59.000Z

375

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische Universität Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

376

Heavy Traffic Analysis for EDF Queues with  

E-Print Network (OSTI)

This paper presents a heavy-traffic analysis of the behavior of a single-server queue under an Earliest-Deadline-First (EDF) scheduling policy, in which customers have deadlines and are served only until their deadlines elapse. The performance of the system is measured by the fraction of reneged work (the residual work lost due to elapsed deadlines), which is shown to be minimized by the EDF policy. The evolution of the lead time distribution of customers in queue is described by a measure-valued process. The heavy traffic limit of this (properly scaled) process is shown to be a deterministic function of the limit of the scaled workload process, which, in turn, is identified to be a doubly reflected Brownian motion. This paper complements previous work by Doytchinov, Lehoczky and Shreve on the EDF discipline, in which customers are served to completion even after their deadlines elapse. The fraction of reneged work in a heavily loaded system and the fraction of late work in the corresponding system without reneging are compared using explicit formulas based on the heavy

John Lehoczky; Kavita Ramanan; Steven Shreve

2007-01-01T23:59:59.000Z

377

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische Universität Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

378

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische Universität Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

379

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische Universität Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

380

HEAVY AND THERMAL OIL RECOVERY PRODUCTION MECHANISMS  

Science Conference Proceedings (OSTI)

This technical progress report describes work performed from January 1 through March 31, 2003 for the project ''Heavy and Thermal Oil Recovery Production Mechanisms,'' DE-FC26-00BC15311. In this project, a broad spectrum of research is undertaken related to thermal and heavy-oil recovery. The research tools and techniques span from pore-level imaging of multiphase fluid flow to definition of reservoir-scale features through streamline-based history matching techniques. During this period, previous analysis of experimental data regarding multidimensional imbibition to obtain shape factors appropriate for dual-porosity simulation was verified by comparison among analytic, dual-porosity simulation, and fine-grid simulation. We continued to study the mechanisms by which oil is produced from fractured porous media at high pressure and high temperature. Temperature has a beneficial effect on recovery and reduces residual oil saturation. A new experiment was conducted on diatomite core. Significantly, we show that elevated temperature induces fines release in sandstone cores and this behavior may be linked to wettability. Our work in the area of primary production of heavy oil continues with field cores and crude oil. On the topic of reservoir definition, work continued on developing techniques that integrate production history into reservoir models using streamline-based properties.

Anthony R. Kovscek

2003-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Multiple Electron Stripping of Heavy Ion Beams  

DOE Green Energy (OSTI)

One approach being explored as a route to practical fusion energy uses heavy ion beams focused on an indirect drive target. Such beams will lose electrons while passing through background gas in the target chamber, and therefore it is necessary to assess the rate at which the charge state of the incident beam evolves on the way to the target. Accelerators designed primarily for nuclear physics or high energy physics experiments utilize ion sources that generate highly stripped ions in order to achieve high energies economically. As a result, accelerators capable of producing heavy ion beams of 10 to 40 Mev/amu with charge state 1 currently do not exist. Hence, the stripping cross-sections used to model the performance of heavy ion fusion driver beams have, up to now, been based upon theoretical calculations. We have investigated experimentally the stripping of 3.4 Mev/amu Kr 7+ and Xe +11 in N2; 10.2 MeV/amu Ar +6 in He, N2, Ar and Xe; 19 MeV/amu Ar +8 in He, N2, Ar and Xe; 30 MeV He 1 + in He, N2, Ar and Xe; and 38 MeV/amu N +6 in He, N2, Ar and Xe. The results of these measurements are compared with the theoretical calculations to assess their applicability over a wide range of parameters.

D. Mueller; L. Grisham; I. Kaganovich; R. L. Watson; V. Horvat; K. E. Zaharakis; Y. Peng

2002-06-25T23:59:59.000Z

382

Heavy fermions in an optical lattice  

Science Conference Proceedings (OSTI)

We employ a mean-field theory to study ground-state properties and transport of a two-dimensional gas of ultracold alkaline-earth-metal atoms governed by the Kondo lattice Hamiltonian plus a parabolic confining potential. In a homogenous system, this mean-field theory is believed to give a qualitatively correct description of heavy-fermion metals and Kondo insulators: It reproduces the Kondo-like scaling of the quasiparticle mass in the former and the same scaling of the excitation gap in the latter. In order to understand ground-state properties in a trap, we extend this mean-field theory via local-density approximation. We find that the Kondo insulator gap manifests as a shell structure in the trapped density profile. In addition, a strong signature of the large Fermi surface expected for heavy-fermion systems survives the confinement and could be probed in time-of-flight experiments. From a full self-consistent diagonalization of the mean-field theory, we are able to study dynamics in the trap. We find that the mass enhancement of quasiparticle excitations in the heavy-Fermi liquid phase manifests as slowing of the dipole oscillations that result from a sudden displacement of the trap center.

Foss-Feig, Michael [Department of Physics, University of Colorado, Boulder, Colorado 80309 (United States); JILA, Boulder, Colorado 80309 (United States); Hermele, Michael; Gurarie, Victor [Department of Physics, University of Colorado, Boulder, Colorado 80309 (United States); Rey, Ana Maria [Department of Physics, University of Colorado, Boulder, Colorado 80309 (United States); JILA, Boulder, Colorado 80309 (United States); National Institute of Standards and Technology, Boulder, Colorado 80309 (United States)

2010-11-15T23:59:59.000Z

383

Compositional changes in heavy oil steamflood simulators  

E-Print Network (OSTI)

The numerical simulation of heavy oil steamfloods has generally been conducted assuming that the oil is non-volatile. Reservoir simulation has traditionally ignored compositional effect s due to heat and steam and assumed that the hydrocarbon phase is non-volatile. This is equivalent to assuming that the equilibrium ratios, K-values, are zero. In order to properly model the mechanism of steamflooding, however, compositional effects need to be taken into account. In this study, laboratory data including distillation, vapor pressure, steam distillation and viscosity measurements, along with a commercial PVT simulator are used to tune equation-of-state (EOS) and viscosity parameters to properly model the PVT properties of the oil. The Peng-Robinson equation-of-state (PR-EOS) was used for all phase behavior calculations. Viscosity as a function of temperature and composition was modeled with the Pedersen correlation for heavy oils. Once a tuned equation-of-state, compositional fluid description was developed for the heavy oil, one-dimensional numerical simulations of the steamflooding process were performed. These simulations demonstrated the utility of the equation-of-state approach. In addition, it was concluded that compositional effects are essential for the proper modeling of low residual oil saturations seen in the field and the formation of an in-situ solvent bank at the steam-oil interface.

Lolley, Christopher Scott

1995-01-01T23:59:59.000Z

384

Towards Heavy Fermions in Europium Intermetallic Compounds  

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

Towards Heavy Fermions in Europium Intermetallic Compounds Print Towards Heavy Fermions in Europium Intermetallic Compounds Print For decades, intermetallic compounds of rare-earth metals have been favorite systems of the research community studying strong electron correlations in solids. Nowadays rare-earth intermetallics are often treated as model systems for studies of zero-temperature quantum critical phase transitions, since heavy-fermion rare-earth compounds (in which the electron effective mass is orders of magnitude larger than the bare electron mass) have provided the clearest evidence for these continuous phase transitions, which are controlled by such parameters as chemical composition, magnetic field, and pressure, rather than temperature. A new study of a europium-based compound by an international team led by researchers from the Technische Universität Dresden in Germany hints that this compound could join well-known compounds of cerium, ytterbium, and uranium as a new material suitable for research on quantum critical transitions. This finding is exciting, since physicists hope that the use of a new material will give an additional degree of freedom for researching quantum critical behavior.

385

REVIEW OF CLEANING SOLUTIONS FOR USE ON COMPONENTS OF THE 9975 SHIPPING PACKAGE  

SciTech Connect

Several candidate cleaning products have been reviewed for use as a disinfectant on 9975 shipping package components which contain or have contacted mold. Following review of the compatibility of these products with each component, ammonia (ammonium hydroxide diluted to 1.5 wt% concentration) appears compatible with all package components that it might contact. Each of the other candidate products is incompatible with one or more package components. Accordingly, ammonia is recommended for this purpose. It is further recommended that all components which are disinfected be subsequently rinsed with di-ionized or distilled water.

Daugherty, W.

2013-09-30T23:59:59.000Z

386

Investigating Water  

E-Print Network (OSTI)

This 3-ring binder contains teaching plans for 12 lessons on topics such as "Water in Our Daily Lives," "The Water Cycle," "Amazing Aquifers," "Water and Soil," "Aquatic Ecosystems," and "Water Wise Use." Accompanying each lesson plan are activity and record sheets for hands-on learning experiences. This curriculum is intended for students in about 4th to 8th grades.

Howard Jr., Ronald A.

2002-01-02T23:59:59.000Z

387

Detecting and analyzing insecure component usage  

Science Conference Proceedings (OSTI)

Software is commonly built from reusable components that provide desired functionalities. Although component reuse significantly improves software productivity, insecure component usage can lead to security vulnerabilities in client applications. ... Keywords: differential testing, insecure component usage, testing and analysis of real-world software

Taeho Kwon; Zhendong Su

2012-11-01T23:59:59.000Z

388

Chemical Exergy of Canola Biomass Components  

Science Conference Proceedings (OSTI)

... LS Karpushenkova Chemical Faculty, Belarusian State University, Minsk, Belarus Thermodynamic properties of canola biomass components: seeds ...

2006-07-20T23:59:59.000Z

389

Large heavy-duty gas turbines for base-load power generation and heat cogeneration  

SciTech Connect

The predominant role of large gas turbines has shifted from peaking-load duty to midrange and base-load electric power generation, especially within combined-cycle plants. Such applications require heavy-duty industrial gas turbines to ensure the same high reliability and availability for continuous service as the associated steam turbines. It is also important that the gas turbines be designed for low maintenance to minimize the necessary outage times and costs for component repair and replacement. The basic design principles and applications of Model V94 gas turbines are discussed with special reference to highly reliable and economic bulk power generation.

Joyce, J.S.

1985-01-01T23:59:59.000Z

390

Triangular flow in heavy ion collisions in a multiphase transport model  

E-Print Network (OSTI)

We obtain a new set of parameters in a multiphase transport (AMPT) model that are able to describe both the charged particle multiplicity density and the elliptic flow measured in Au + Au collisions at center-of-mass energy root(S)NN = 200 GeV at the Relativistic Heavy Ion Collider, although they still give somewhat softer transverse momentum spectra. We then use the model to predict the triangular flow due to fluctuations in the initial collision geometry and study its effect relative to those from other harmonic components of anisotropic flows on the dihadron azimuthal correlations in both central and midcentral collisions.

Xu, Jun; Ko, Che Ming.

2011-01-01T23:59:59.000Z

391

Assessing regional evapotranspiration and water balance across a Mediterranean montane climate gradient  

E-Print Network (OSTI)

water storage anoma- lies) generally rely on assessing one component and inferring the other as a residual (Yeh and

Anderson, Ray G.; Jin, Yufang; Goulden, Michael L.

2012-01-01T23:59:59.000Z

392

Chemical characterization of the ambient organic aerosol soluble in water  

E-Print Network (OSTI)

the water-soluble organic car- bon (WSOC) components of ambient aerosol particles into hydrophilic and Weber [2006]. In the XAD-8 method, the WSOC components that penetrate the column are hydro- philic

Weber, Rodney

393

Selected Component Failure Rate Values from Fusion Safety Assessment Tasks  

Science Conference Proceedings (OSTI)

This report is a compilation of component failure rate and repair rate values that can be used in magnetic fusion safety assessment tasks. Several safety systems are examined, such as gas cleanup systems and plasma shutdown systems. Vacuum system component reliability values, including large vacuum chambers, have been reviewed. Values for water cooling system components have also been reported here. The report concludes with the examination of some equipment important to personnel safety, atmospheres, combustible gases, and airborne releases of radioactivity. These data should be useful to system designers to calculate scoping values for the availability and repair intervals for their systems, and for probabilistic safety or risk analysts to assess fusion systems for safety of the public and the workers.

Cadwallader, Lee Charles

1998-09-01T23:59:59.000Z

394

Selected component failure rate values from fusion safety assessment tasks  

Science Conference Proceedings (OSTI)

This report is a compilation of component failure rate and repair rate values that can be used in magnetic fusion safety assessment tasks. Several safety systems are examined, such as gas cleanup systems and plasma shutdown systems. Vacuum system component reliability values, including large vacuum chambers, have been reviewed. Values for water cooling system components have also been reported here. The report concludes with the examination of some equipment important to personnel safety, atmospheres, combustible gases, and airborne releases of radioactivity. These data should be useful to system designers to calculate scoping values for the availability and repair intervals for their systems, and for probabilistic safety or risk analysts to assess fusion systems for safety of the public and the workers.

Cadwallader, L.C.

1998-09-01T23:59:59.000Z

395

Hydro-kinetic approach to relativistic heavy ion collisions  

E-Print Network (OSTI)

We develop a combined hydro-kinetic approach which incorporates a hydrodynamical expansion of the systems formed in \\textit{A}+\\textit{A} collisions and their dynamical decoupling described by escape probabilities. The method corresponds to a generalized relaxation time ($\\tau_{\\text{rel}}$) approximation for the Boltzmann equation applied to inhomogeneous expanding systems; at small $\\tau_{\\text{rel}}$ it also allows one to catch the viscous effects in hadronic component - hadron-resonance gas. We demonstrate how the approximation of sudden freeze-out can be obtained within this dynamical picture of continuous emission and find that hypersurfaces, corresponding to a sharp freeze-out limit, are momentum dependent. The pion $m_{T}$ spectra are computed in the developed hydro-kinetic model, and compared with those obtained from ideal hydrodynamics with the Cooper-Frye isothermal prescription. Our results indicate that there does not exist a universal freeze-out temperature for pions with different momenta, and support an earlier decoupling of higher $p_{T}$ particles. By performing numerical simulations for various initial conditions and equations of state we identify several characteristic features of the bulk QCD matter evolution preferred in view of the current analysis of heavy ion collisions at RHIC energies.

S. V. Akkelin; Y. Hama; Iu. A. Karpenko; Yu. M. Sinyukov

2008-04-25T23:59:59.000Z

396

Understanding reservoir mechanisms using phase and component streamline tracing  

E-Print Network (OSTI)

Conventionally streamlines are traced using total flux across the grid cell faces. The visualization of total flux streamlines shows the movement of flood, injector-producer relationship, swept area and movement of tracer. But they fail to capture some important signatures of reservoir dynamics, such as dominant phase in flow, appearance and disappearance of phases (e.g. gas), and flow of components like CO2. In the work being presented, we demonstrate the benefits of visualizing phase and component streamlines which are traced using phase and component fluxes respectively. Although the phase and component streamlines are not appropriate for simulation, as they might be discontinuous, they definitely have a lot of useful information about the reservoir processes and recovery mechanisms. In this research, phase and component streamline tracing has been successfully implemented in three-phase and compositional simulation and the additional information obtained using these streamlines have been explored. The power and utility of the phase and component streamlines have been demonstrated using synthetic examples and two field cases. The new formulation of streamline tracing provides additional information about the reservoir drive mechanisms. The phase streamlines capture the dominant phase in flow in different parts of the reservoir and the area swept corresponding to different phases can be identified. Based on these streamlines the appearance and disappearance of phases can be identified. Also these streamlines can be used for optimizing the field recovery processes like water injection and location of infill wells. Using component streamlines the movement of components like CO2 can be traced, so they can be used for optimizing tertiary recovery mechanisms and tracking of tracers. They can also be used to trace CO2 in CO2 sequestration project where the CO2 injection is for long term storage in aquifers or reservoirs. They have also other potential uses towards study of reservoir processes and behavior such as drainage area mapping for different phases, phase rate allocations to reservoir layers, etc.

Kumar, Sarwesh

2008-08-01T23:59:59.000Z

397

Independent Components Of Odour Signals  

E-Print Network (OSTI)

If two independent observations or processes are measured with the same apparatus, the inherent nature of the measuring device will in many cases introduce a dependency between the two recorded processes object to inspection. In this paper a suggestion of how Independent Component Analysis (ICA) can be used to identify such device dependencies and in turn give an estimated reconstruction of the observations without the correlation between signals introduced by the apparatus. The procedure is illustrated with the use of an "electronic nose" used to sample odours from mixtures of alcohol solutions. It is shown that ICA as a novel tool in the analysis of odour signals can extract the independent odour sources and give acceptable estimates of the ratio with which the alcohol solutions were mixed with two different approaches.

Martin Kermit Oliver; Oliver Tomic T

2001-01-01T23:59:59.000Z

398

Bharat Heavy Electricals Ltd BHEL | Open Energy Information  

Open Energy Info (EERE)

Heavy Electricals Ltd BHEL Heavy Electricals Ltd BHEL Jump to: navigation, search Name Bharat Heavy Electricals Ltd. (BHEL) Place New Delhi, Delhi (NCT), India Zip 110049 Sector Biomass, Hydro, Renewable Energy, Solar, Wind energy Product Delhi-based power generation equipment manufacturer in the energy-related/infrastructure sector. The firm is also involved in renewable energy sector- small hydro, solar, biomass and wind. References Bharat Heavy Electricals Ltd. (BHEL)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Bharat Heavy Electricals Ltd. (BHEL) is a company located in New Delhi, Delhi (NCT), India . References ↑ "Bharat Heavy Electricals Ltd. (BHEL)" Retrieved from

399

High-energy accelerator for beams of heavy ions  

DOE Patents (OSTI)

An apparatus for accelerating heavy ions to high energies and directing the accelerated ions at a target comprises a source of singly ionized heavy ions of an element or compound of greater than 100 atomic mass units, means for accelerating the heavy ions, a storage ring for accumulating the accelerated heavy ions and switching means for switching the heavy ions from the storage ring to strike a target substantially simultaneously from a plurality of directions. In a particular embodiment the heavy ion that is accelerated is singly ionized hydrogen iodide. After acceleration, if the beam is of molecular ions, the ions are dissociated to leave an accelerated singly ionized atomic ion in a beam. Extraction of the beam may be accomplished by stripping all the electrons from the atomic ion to switch the beam from the storage ring by bending it in magnetic field of the storage ring.

Martin, Ronald L. (La Grange, IL); Arnold, Richard C. (Chicago, IL)

1978-01-01T23:59:59.000Z

400

Advanced Diesel Engine Component Development Program, final report - tasks 4-14  

DOE Green Energy (OSTI)

The Advanced Diesel Engine Component Development (ADECD) Program is a multi-year, multi-phase effort to develop and demonstrate the critical technology needed to advance the heavy-duty low heat rejection (LHR) engine concept for the long-haul, heavy-duty truck market. The ADECD Program has been partitioned into two phases. The first phase, Phase 1, was completed in 1986, resulting in definition of the Advanced Diesel Reference Engine (ADRE)III. The second phase, Phase 11/111, examines the feasibility of the ADRE concepts for application to the on-highway diesel engine. Phase 11/111 is currently underway. This project is sponsored by the U.S. Department of Energy, Office of Transportation Technologies. The work has been performed by the Detroit Diesel Corporation (DDC) under Contract DEN3-329 with the NASA Lewis Research Center, who provide project management and technical direction.

Kaushal, T.S.; Weber, K.E.

1994-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Heavy-section steel irradiation program. Volume 4, No. 2. Semiannual progress report, April 1993--September 1993  

SciTech Connect

Maintaining the integrity of the reactor pressure vessel (RPV) in a light-water-cooled nuclear power plant is crucial in preventing and controlling severe accidents which have the potential for major contamination release. The RPV is the only key safety-related component of the plant for which a duplicate or redundant backup system does not exist. In particular, it is vital to fully understand the degree of irradiation-induced degradation of the RPV`s fracture resistance which occurs during service, since without that radiation damage, it is virtually impossible to postulate a realistic scenario that would result in RPV failure. For this reason, the Heavy-Section Steel Irradiation (HSSI) Program has been established to provide a quantitative assessment of the effects of neutron irradiation on the material behavior and, in particular, the fracture toughness properties of typical pressure-vessel steels. Effects of specimen size; material chemistry; product form and microstructure; irradiation fluence, flux, temperature, and spectrum; and postirradiation annealing are being examined on a wide range of fracture properties. The HSSI Program is arranged into 14 tasks: (1) program management, (2) fracture toughness (K{sub lc}) curve shift in high-copper welds, (3) crack-arrest toughness (K{sub la}) curve shift in high-copper welds, (4) irradiation effects on cladding, (5) K{sub lc} and K{sub la} curve shifts in low upper-shelf (LUS) welds, (6) annealing effects in LUS welds, (7) irradiation effects in a commercial LUS weld, (8) microstructural analysis of irradiation effects, (9) in-service aged material evaluations, (10) correlation monitor materials, (11) special technical assistance, (12) Japan Power Development Reactor steel examination, (13) technical assistance for Joint Coordinating Committee on Civilian Nuclear Reactor Safety (JCCCNRS) Working Groups 3 and 12, and (14) additional requirements for materials.

Corwin, W.R. [Oak Ridge National Lab., TN (United States)

1995-03-01T23:59:59.000Z

402

Simulation study to investigate development options for a super-heavy oil reservoir  

E-Print Network (OSTI)

A reservoir simulation study was performed on a heavy oil reservoir with the main objective of evaluating possible development options beyond the existing cold production method. The 206-acre area simulated - part of a significantly larger oil accumulation - lies about 3000 ft. ss. and has a gross thickness of 560 ft. The simulated area contains 120 MMSTB oil of 9° API gravity with in situ viscosity of 6,000 cp. Production began in 1992 with the reservoir being drained by one vertical well, one slanted well and one horizontal well. The simulation study was conducted in a systematic manner using two types of commercial reservoir simulators to minimize computational time. For history matching the cold production period and forecasting of cold production cases, a black oil simulator was used (ECLIPSE 100). A fairly satisfactory match of the production and pressure data was obtained which required an analytical aquifer to be attached to the northern part of the reservoir. For thermal EOR cases, the oil was simulated as a hydrocarbon consisting of three pseudo components. These cases were run using a thermal compositional simulator (ECLIPSE 300). Simulation results indicate oil recovery, for the area developed by the existing horizontal well and two new horizontal wells, to be as follows. For cold production, the oil recovery amounts to 13% of original-oil-in-place (OOIP). With cyclic steam injection, the recovery factor is slightly increased to 15% OOIP. However, with steam flooding -utilizing the new horizontal wells as injectors - the recovery factor is significantly increased to 22% OOIP. Steam flooding is evidently superior to cyclic steam injection primarily due to the fact that the reservoir is pressurized in the former EOR method and not in the latter, and to the fact that cyclic steam injection is more a near-wellbore thermal stimulation process as opposed to a more reservoir-wide heating process under steam flooding. Finally, with steam-propane injection (at a constant steam:propane mass ratio of 100:5), the oil recovery factor is further increased to 26% OOIP. Simulation results indicate this EOR method creates a more favorable distribution of heat in the reservoir, thus better sweep efficiency and reduction in produced water cut. Selection of development options to be implemented would depend on the economics of each case. Economic evaluation of the various cases has not been covered in the thesis and is best done by the operator of the field.

Diaz Franco, Jose Manuel

2001-01-01T23:59:59.000Z

403

Sequential fissions of heavy nuclear systems  

E-Print Network (OSTI)

In Xe+Sn central collisions from 12 to 20 MeV/A measured with the INDRA 4$\\pi$ multidetector, the three-fragment exit channel occurs with a significant cross section. In this contribution, we show that these fragments arise from two successive binary splittings of a heavy composite system. Strong Coulomb proximity effects are observed in the three-fragment final state. By comparison with Coulomb trajectory calculations, we show that the time scale between the consecutive break-ups decreases with increasing bombarding energy, becoming compatible with quasi-simultaneous multifragmentation above 18 MeV/A.

Diego Gruyer; J. D. Frankland; E. Bonnet; M. Boisjoli; A. Chbihi; L. Manduci; P. Marini; K. Mazurek; P. N. Nadtochy

2013-08-24T23:59:59.000Z

404

Heavy Flavor Simplified Models at the LHC  

Science Conference Proceedings (OSTI)

We consider a comprehensive set of simplified models that contribute to final states with top and bottom quarks at the LHC. These simplified models are used to create minimal search strategies that ensure optimal coverage of new heavy flavor physics involving the pair production of color octets and triplets. We provide a set of benchmarks that are representative of model space, which can be used by experimentalists to perform their own optimization of search strategies. For data sets larger than 1 fb{sup -1}, same-sign dilepton and 3b search regions become very powerful. Expected sensitivities from existing and optimized searches are given.

Essig, Rouven; /YITP, Stony Brook /Princeton, Inst. Advanced Study /SLAC; Izaguirre, Eder; /SLAC /Stanford U., Phys. Dept.; Kaplan, Jared; Wacker, Jay G.; /SLAC

2012-04-03T23:59:59.000Z

405

Phenomenology of heavy vector-like leptons  

E-Print Network (OSTI)

We study the impact that a heavy generation of vector-like leptons can have on the value of the electric dipole moment of the electron, and the rates for the flavor violating processes mu --> e gamma and mu --> 3e. The smallness of the charged lepton masses suggests that at least some of the Yukawa coupling constants of the vector-like leptons to the ordinary leptons or amongst themselves are small, but even with such small couplings experiments trying to detect these quantities are sensitive to extra generation lepton masses up to about 100 TeV.

Koji Ishiwata; Mark B. Wise

2013-07-03T23:59:59.000Z

406

Diamond Detectors for Heavy Ion Measurements  

E-Print Network (OSTI)

In 1999, the accelerator facility at GSI is scheduled to deliver beam intensities of about 10 10 particles/spill for all available ions up to 238 U. This necessitates the development of a new generation of radiation-resistant and ultra-fast detectors, in conjunction with new high-speed and low-noise electronics. Preliminary results confirm the suitability of CVD-diamond detectors for both, beam diagnostics, and heavy-ion experiments with projectiles in the energy region from 50 MeV/amu to 2 GeV/amu. Various test measurements

E. Berdermann; K. Blasche; P. Moritz; H. Stelzer; F. Zeytouni

1998-01-01T23:59:59.000Z

407

Energy Basics: Water Heating  

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

Storage Water Heaters Tankless Demand Water Heaters Heat Pump Water Heaters Solar Water Heaters Tankless Coil & Indirect Water Heaters Water Heating A variety of...

408

DOE - Office of Legacy Management -- Heavy Minerals Inc - IL...  

Office of Legacy Management (LM)

Subject: FUSRAP Considered Site Recommendation; July 9, 1990. IL.14-2 - Heavy Minerals Co. Letter; Wyatt to Faulkner; Subject: Crude Thorium Hydroxide Proposal; December 1, 1954...

409

Characterization of Heavy Clay Ceramic Mixed with Red Mud Waste  

Science Conference Proceedings (OSTI)

Presentation Title, Characterization of Heavy Clay Ceramic Mixed with Red Mud Waste. Author(s), Carlos Maurício Fontes Vieira, Michelle Pereira Babisk, ...

410

FY 2004 Annual Progress Report for Heavy Vehicle Systems Optimization  

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

HEAVY HEAVY VEHICLE SYSTEMS OPTIMIZATION FreedomCAR and Vehicle Technologies Program U.S. Department of Energy FreedomCAR and Vehicle Technologies Program 1000 Independence Avenue, S.W. Washington, D.C. 20585-0121 FY 2004 Annual Progress Report for Heavy Vehicle Systems Optimization Energy Efficiency and Renewable Energy FreedomCAR and Vehicle Technologies Program Approved by Dr. Sidney Diamond Technology Area Development Specialist February 2005 Heavy Vehicle Systems Optimization Program FY 2004 Annual Report iii Contents Foreword by Dr. Sidney Diamond, FreedomCAR and Vehicle Technologies Program, Energy Efficiency and Renewable Energy, U.S. Department of Energy ................................. 1 I. Aerodynamic Drag Reduction......................................................................................................

411

The Role of Batteries in Auxiliary Power for Heavy Trucks  

DOE Green Energy (OSTI)

The problem that this paper deals with is that Heavy trucks leave their engines on while they are stopped and the driver is sleeping, eating, etc.

D. Crouch

2001-12-12T23:59:59.000Z

412

Mass Transfer Mechanisms during the Solvent Recovery of Heavy Oil.  

E-Print Network (OSTI)

??Canada has the second largest proven oil reserves next to Saudi Arabia which is mostly located in Alberta and Saskatchewan but is unconventional heavy oil… (more)

James, Lesley

2009-01-01T23:59:59.000Z

413

Combination process for the conversion of heavy distillates to LPG  

SciTech Connect

Maximum conversion of heavy distillates to LPG is achieved through a combination process involving two-stage hydrocracking. 9 claims, no drawings.

Hilfman, L.

1976-06-15T23:59:59.000Z

414

Heavy Metals Behavior of Municiple Solid Waste Incineration ... - TMS  

Science Conference Proceedings (OSTI)

May 1, 2007 ... Heavy Metals Behavior of Municiple Solid Waste Incineration Bottom Ash with Magnetic Separation by Gi-Chun Han, Nam-Il Um, Kwang-Suk ...

415

Advanced Vehicle Testing Activity - Medium and Heavy Duty Hybrid...  

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

an electric vehicle. Medium and heavy duty HEV testing results to date are posted below. Vehicle Testing Reports INL Hybrid Shuttle Busses INL Hybrid Shuttle Busses INL Hybrid...

416

Using Microwave Radiation for Removing Heavy Metal Ions and ...  

Science Conference Proceedings (OSTI)

Presentation Title, Using Microwave Radiation for Removing Heavy Metal Ions and Producing Biofuels. Author(s), Aharon Gedanken. On-Site Speaker (Planned ) ...

417

Heavy Cycloadditions: Reactions of Diagailene with Cyclic Polyolefins...  

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

We are interested in investigating the interactions of low- * valent Group 13 heavy alkene analogues with a variety of small molecules. To investigate uncatalysed, room...

418

A Distributed Framework for Coordinated Heavy-duty Vehicle ...  

E-Print Network (OSTI)

Dec 28, 2013 ... Abstract: Heavy-duty vehicles traveling in a single file with small intervehicle distances experience a reduced aerodynamic drag and therefore ...

419

Flavor Physics Data from the Heavy Flavor Averaging Group (HFAG)  

DOE Data Explorer (OSTI)

The Heavy Flavor Averaging Group (HFAG) was established at the May 2002 Flavor Physics and CP Violation Conference in Philadelphia, and continues the LEP Heavy Flavor Steering Group's tradition of providing regular updates to the world averages of heavy flavor quantities. Data are provided by six subgroups that each focus on a different set of heavy flavor measurements: B lifetimes and oscillation parameters, Semi-leptonic B decays, Rare B decays, Unitarity triangle parameters, B decays to charm final states, and Charm Physics.

Heavy Flavor Averaging Group (HFAG)

420

RHIC | Physics of the Relativistic Heavy Ion Collider  

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

The Physics of RHIC Physicists from around the world are using the Relativistic Heavy Ion Collider to explore some of Nature's most basic -- and intriguing -- ingredients and...

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


421

Beaches Energy Services - Solar Water Heating Rebate Program...  

Open Energy Info (EERE)

Incentive Programs Amount Solar Water Heater: 500 Equipment Requirements Must be Florida Solar Energy Center (FSEC) certified All system components must be new Systems must be...

422

Integration of a "Passive Water Recovery" MEA into a Portable...  

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

complexity and scaling difficulties of water recovery components such as the condenser heat exchanger. To overcome this barrier, the research objective of the University of...

423

K West integrated water treatment system subproject safety analysis document  

Science Conference Proceedings (OSTI)

This Accident Analysis evaluates unmitigated accident scenarios, and identifies Safety Significant and Safety Class structures, systems, and components for the K West Integrated Water Treatment System.

SEMMENS, L.S.

1999-02-24T23:59:59.000Z

424

Ground Water  

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

Water Nature Bulletin No. 408-A February 27, 1971 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation GROUND WATER We take...

425

Water Dogs  

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

NA Question: I'd like to know about the water dogs and their life cycle? Replies: Water dog, or mud puppy, is a common name for a type of salamander that never develops lungs, but...

426

Citation: K. Nakamura et al. (Particle Data Group), JPG 37, 075021 (2010) (URL: http://pdg.lbl.gov) Heavy Neutral Leptons, Searches for  

E-Print Network (OSTI)

://pdg.lbl.gov) Heavy Neutral Leptons, Searches for (A) Heavy Neutral Leptons(A) Heavy Neutral Leptons(A) Heavy Neutral Leptons(A) Heavy Neutral Leptons Stable Neutral Heavy Lepton MASS LIMITSStable Neutral Heavy Lepton MASS LIMITSStable Neutral Heavy Lepton MASS LIMITSStable Neutral Heavy Lepton MASS LIMITS Note that LEP results

427

Citation: J. Beringer et al. (Particle Data Group), PR D86, 010001 (2012) (URL: http://pdg.lbl.gov) Heavy Neutral Leptons, Searches for  

E-Print Network (OSTI)

://pdg.lbl.gov) Heavy Neutral Leptons, Searches for (A) Heavy Neutral Leptons(A) Heavy Neutral Leptons(A) Heavy Neutral Leptons(A) Heavy Neutral Leptons Stable Neutral Heavy Lepton MASS LIMITSStable Neutral Heavy Lepton MASS LIMITSStable Neutral Heavy Lepton MASS LIMITSStable Neutral Heavy Lepton MASS LIMITS Note that LEP results

428

Metal Cutting for Large Component Removal  

Science Conference Proceedings (OSTI)

Decommissioning of commercial nuclear power plants presents technological challenges. One major challenge is the removal of large components mainly consisting of the reactor vessel, steam generators and pressurizer. In order to remove and package these large components nozzles must be cut from the reactor vessel to precise tolerances. In some cases steam generators must be segmented for size and weight reduction. One innovative technology that has been used successfully at several commercial nuclear plant decommissioning is diamond wire sawing. Diamond wire sawing is performed by rotating a cable with diamond segments attached using a flywheel approximately 24 inches in diameter driven remotely by a hydraulic pump. Tension is provided using a gear rack drive which also takes up the slack in the wire. The wire is guided through the use of pulleys keeps the wire in a precise location. The diamond wire consists of 1/4 inch aircraft cable with diamond beads strung over the cable separated by springs and brass crimps. Standard wire contains 40 diamond beads per meter and can be made to any length. Cooling the wire and controlling the spread of contamination presents significant challenges. Under normal circumstances the wire is cooled and the cutting kerf cleaned by using water. In some cases of reactor nozzle cuts the use of water is prohibited because it cannot be controlled. This challenge was solved by using liquid Carbon Dioxide as the cooling agent. The liquid CO{sub 2} is passed through a special nozzle which atomizes the liquid into snowflakes which is introduced under pressure to the wire. The snowflakes attach to the wire keeping it cool and to the metal shavings. As the CO{sub 2} and metal shavings are released from the wire due to its fast rotation, the snowflakes evaporate leaving only the fine metal shavings as waste. Secondary waste produced is simply the small volume of fine metal shavings removed from the cut surface. Diamond wire sawing using CO{sub 2} cooling has been employed for cutting the reactor nozzles at San Onofre Unit 1 and at Connecticut Yankee. These carbon steel nozzles ranged up to 54 inch diameter with a 15 inch thick wall and an interior stainless cladding. Diamond wire sawing using traditional water cooling has been used to segment the reactor head at Rancho Seco and for cutting reactor nozzles and control rod drive tubes at Dairyland Power's Lacrosse BWR project. Advantages: - ALARA: All cutting is preformed remotely significantly reducing dose. Stringing of wires is accomplished using long handle tools. - Secondary waste is reduced to just the volume of material cut with the diamond wire. - The potential for airborne contamination is eliminated. Due to the flexibility of the wire, any access restrictions and interferences can be accommodated using pulleys and long handle tools. - The operation is quiet. Disadvantages: - With Liquid Carbon Dioxide cooling and cleaning, delivery of the material must be carefully planned. The longer the distance from the source to the cut area, the greater the chance for pressure drop and subsequent problems with line freezing. - Proper shrouding and ventilation are required for environmental reasons. In each case, the metal structures were cut at a precise location. Radiation dose was reduced significantly by operating the equipment from a remote location. The cuts were very smooth and completed on schedule. Each project must be analyzed individually and take into account many factors including access, radiological conditions, environmental conditions, schedule requirements, packaging requirements and size of cuts.

Hulick, Robert M. [Bluegrass Concrete Cutting Inc., 107 Mildred Street PO Box 427, Greenville, Alabama 36037 (United States)

2008-01-15T23:59:59.000Z

429

Water Transport Exploratory Studies  

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

Exploratory Studies Exploratory Studies Office of Hydrogen, Fuel Cells, and Infrastructure Technologies 2007 kickoff meeting February 13-14, 2007 DOE Forrestal Building Rod Borup Mukundan Rangachary, Bryan Pivovar, Yu Seung Kim, John Davey, David Wood, Tom Springer, Muhammad Arif , Ken Chen, Simon Cleghorn, Will Johnson, Karren More, Peter Wilde, Tom Zawodzinski Los Alamos National Lab This presentation does not contain any proprietary or confidential information Objectives * Develop understanding of water transport in PEM Fuel Cells (non-design-specific) * Evaluate structural and surface properties of materials affecting water transport and performance * Develop (enable) new components and operating methods * Accurately model water transport within the fuel cell * Develop a better understanding of the effects of

430

Analysis of U.S. Water Resources under Climate Change  

E-Print Network (OSTI)

The MIT Integrated Global System Model (IGSM) framework, extended to include a Water Resource System (WRS) component, is applied to an integrated assessment of effects of alternative climate policy scenarios on U.S. water ...

Blanc, E.

431

Manganese Doping of Magnetic Iron Oxide Nanoparticles: Tailoring Surface Reactivity for a Regenerable Heavy Metal Sorbent  

SciTech Connect

A method for tuning the analyte affinity of magnetic, inorganic nanostructured sorbents for heavy metal contaminants is described. The manganese-doped iron oxide nanoparticle sorbents have a remarkably high affinity compared to the precursor material. Sorbent affinity can be tuned toward an analyte of interest simply by adjustment of the dopant quantity. The results show that following the Mn doping process there is a large increase in affinity and capacity for heavy metals (i.e., Co, Ni, Zn, As, Ag, Cd, Hg, and Tl). Capacity measurements were carried out for the removal of cadmium from river water and showed significantly higher loading than the relevant commercial sorbents tested for comparison. The reduction in Cd concentration from 100 ppb spiked river water to 1 ppb (less than the EPA drinking water limit of 5 ppb for Cd) was achieved following treatment with the Mn-doped iron oxide nanoparticles. The Mn-doped iron oxide nanoparticles were able to load 1 ppm of Cd followed by complete stripping and recovery of the Cd with a mild acid wash. The Cd loading and stripping is shown to be consistent through multiple cycles with no loss of sorbent performance.

Warner, Cynthia L.; Chouyyok, Wilaiwan; Mackie, Katherine E.; Neiner, Doinita; Saraf, Laxmikant; Droubay, Timothy C.; Warner, Marvin G.; Addleman, Raymond S.

2012-02-28T23:59:59.000Z

432

NETL: Water-Energy Interface - Power Plant Water Management  

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

Reduction of Water Use in Wet FGD Systems – USR Group, Inc. Reduction of Water Use in Wet FGD Systems – USR Group, Inc. The project team demonstrates the use of regenerative heat exchange to reduce flue gas temperature and minimize evaporative water consumption in wet flue gas desulfurization (FGD) systems on coal-fired boilers. Most water consumption in coal-fired power plants occurs due to evaporative water losses. For example, a 500-megawatt (MW) power plant will loose approximately 5,000 - 6,000 gallons per minute (gpm) to evaporation and 500 gpm in the wet FGD system. Installation of regenerative reheat on FGD systems is expected to reduce water consumption to one half of water consumption using conventional FGD technology. Electrostatic Precipitator Researchers are conducting pilot-scale tests of regenerative heat exchange to determine the reduction in FGD water consumption that can be achieved and assessing the resulting impact on air pollution control (APC) systems. The project team consists of URS Group, Inc. as the prime contractor, the Electric Power Research Institute (EPRI), Southern Company, Tennessee Valley Authority (TVA), and Mitsubishi Heavy Industries (MHI). The team is conducting an analysis of the improvement in the performance of the APC systems and the resulting reduction in capital and operating costs. The tests are intended to determine the impact of operation at cooler flue gas temperatures on FGD water consumption, electrostatic precipitator (ESP) particulate removal (see Figure 1), SO3 removal, and Hg removal. Additionally, tests are conducted to assess the potential negative impact of excessive corrosion rates in the regenerative heat exchanger.

433

HEAVY AND THERMAL OIL RECOVERY PRODUCTION MECHANISMS  

SciTech Connect

The Stanford University Petroleum Research Institute (SUPRI-A) conducts a broad spectrum of research intended to help improve the recovery efficiency from difficult to produce reservoirs including heavy oil and fractured low permeability systems. Our scope of work is relevant across near-, mid-, and long-term time frames. The primary functions of the group are to conduct direction-setting research, transfer research results to industry, and educate and train students for careers in industry. Presently, research in SUPRI-A is divided into 5 main project areas. These projects and their goals include: (1) Multiphase flow and rock properties--to develop better understanding of the physics of displacement in porous media through experiment and theory. This category includes work on imbibition, flow in fractured media, and the effect of temperature on relative permeability and capillary pressure. (2) Hot fluid injection--to improve the application of nonconventional wells for enhanced oil recovery and elucidate the mechanisms of steamdrive in low permeability, fractured porous media. (3) Mechanisms of primary heavy oil recovery--to develop a mechanistic understanding of so-called ''foamy oil'' and its associated physical chemistry. (4) In-situ combustion--to evaluate the effect of different reservoir parameters on the insitu combustion process. (5) Reservoir definition--to develop and improve techniques for evaluating formation properties from production information. What follows is a report on activities for the past year. Significant progress was made in all areas.

Anthony R. Kovscek; Louis M. Castanier

2002-09-30T23:59:59.000Z

434

Dynamic Stabilization of the Ablative Rayleigh-Taylor Instability for Heavy Ion Fusion  

SciTech Connect

Dynamic stabilization of the ablative Rayleigh-Taylor instability of a heavy ion fusion target induced by a beam wobbling system is studied. Using a sharp-boundary model and Courant-Synder theory, it is shown, with an appropriately chosen modulation waveform, that the instability can be sta- bilized in certain parameter regimes. It is found that the stabilization e ect has a strong dependence on the modulation frequency and the waveform. Modulation with frequency comparable to the instability growth rate is the most e ective in terms of stabilizing the instability. A modulation with two frequency components can result in a reduction of the growth rate larger than the sum of that due to the two components when applied separately.

Hong Qin, Ronald C. Davidson and B. Grant Logan

2012-10-04T23:59:59.000Z

435

Chemical foaming of water-bearing explosives  

SciTech Connect

A process is described for preparing foamed semi-solid colloidal dispersions of water-bearing blasting agents, especially water gels or thickened water-bearing explosives, and emulsion-type blasting agents. It consists of mixing inorganic oxidizing salt, fuel, and water. The improvement consists of separately incorporating into the mix each component of a 2-component foaming agent composition: (1) a hydrazine or derivative and (2) an oxidizing agent that aids in decomposing the hydrazine or derivative to produce gas. This foams and sensitizes the blasting agent. When thickener is added to the mix, the thickener should be nonoxidizable in the mix during preparation of the blasting agent. (20 claims)

Chrisp, J.D.

1972-12-19T23:59:59.000Z

436

Experimental investigation of caustic steam injection for heavy oils  

E-Print Network (OSTI)

An experimental study has been conducted to compare the effect of steam injection and caustic steam injection in improving the recovery of San Ardo and Duri heavy oils. A 67 cm long x 7.4 cm O.D (outer diameter), steel injection cell is used in the study. Six thermocouples are placed at specific distances in the injection cell to record temperature profiles and thus the steam front velocity. The injection cell is filled with a mixture of oil, water and sand. Steam is injected at superheated conditions of 238oC with the cell outlet pressure set at 200 psig, the cell pressure similar to that found in San Ardo field. The pressure in the separators is kept at 50 psig. The separator liquid is sampled at regular intervals. The liquid is centrifuged to determine the oil and water volumes, and oil viscosity, density and recovery. Acid number measurements are made by the titration method using a pH meter and measuring the EMF values. The interfacial tensions of the oil for different concentrations of NaOH are also measured using a tensionometer. Experimental results show that for Duri oil, the addition of caustic results in an increase in recovery of oil from 52% (steam injection) to 59 % (caustic steam injection). However, caustic has little effect on San Ardo oil where oil recovery is 75% (steam injection) and 76 % (caustic steam injection). Oil production acceleration is seen with steam-caustic injection. With steam caustic injection there is also a decrease in the produced oil viscosity and density for both oils. Sodium hydroxide concentration of 1 wt % is observed to give the lowest oil-caustic interfacial tension. The acid numbers for San Ardo and Duri oil are measured as 6.2 and 3.57 respectively.

Madhavan, Rajiv

2009-05-01T23:59:59.000Z

437

Building Component Library | Open Energy Information  

Open Energy Info (EERE)

Building Component Library Building Component Library Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Building Component Library Agency/Company /Organization: NREL Sector: Energy Focus Area: Buildings Phase: Create a Vision, Evaluate Options, Develop Goals, Prepare a Plan Topics: Resource assessment, Technology characterizations Resource Type: Dataset Website: bcl.nrel.gov Cost: Free OpenEI Keyword(s): buildings, nrel, data, component Language: English Building Component Library Screenshot References: Buildings Component Library[1] The Building Component Library is a repository of building data used to create building energy models. The Building Component Library is a repository of building data used to create building energy models. The data are broken down into separate

438

Clustering and disjoint principal component analysis  

Science Conference Proceedings (OSTI)

A constrained principal component analysis, which aims at a simultaneous clustering of objects and a partitioning of variables, is proposed. The new methodology allows us to identify components with maximum variance, each one a linear combination of ...

Maurizio Vichi; Gilbert Saporta

2009-06-01T23:59:59.000Z

439

Component Certification - What is the Value?  

Science Conference Proceedings (OSTI)

Component-based software is becoming increasingly popular as a means to create value through improved integration across multiple parts of a plant or business. However, sometimes components that are supposed to be integrated cannot be integrated in the ...

Lars Bratthall; Johan Hasselberg; Brad Hoffman; Zbigniew Korendo; Bruno Schilli; Lars Gundersen

2002-12-01T23:59:59.000Z

440

Advanced filters and components for power applications  

E-Print Network (OSTI)

The objective of this thesis is to improve the high frequency performance of components and filters by better compensating the parasitic effects of practical components. The main application for this improvement is in ...

Neugebauer, Timothy Carl, 1975-

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Battery components employing a silicate binder  

SciTech Connect

A battery component structure employing inorganic-silicate binders. In some embodiments, casting or coating of components may be performed using aqueous slurries of silicates and electrode materials or separator materials.

Delnick, Frank M. (Albuquerque, NM); Reinhardt, Frederick W. (Albuquerque, NM); Odinek, Judy G. (Rio Rancho, NM)

2011-05-24T23:59:59.000Z

442

Equatorial Velocity Profiles. Part I: Meridional Component  

Science Conference Proceedings (OSTI)

A time series or vertical profiles of horizontal velocity was collected in the western equatorial Indian Ocean during late spring of 1976. The meridional velocity component is examined here, the zonal component in Part II of this paper. The ...

Kathleen O'Neill

1984-12-01T23:59:59.000Z

443

Heavy reflector experiments in the IPEN/MB-01 reactor: Stainless steel, carbon steel and nickel  

SciTech Connect

New experiments devoted to the measurements of physical parameters of a light water core surrounded by a heavy reflector were performed in the IPEN/MB-01 research reactor facility. These experiments comprise three sets of heavy reflector (SS-304, Carbon Steel, and Nickel) in a form of laminates around 3 mm thick. Each set was introduced individually in the west face of the core of the IPEN/MB-01 reactor. The aim here is to provide high quality experimental data for the interpretation and validation of the SS-304 heavy reflector calculation methods. The experiments of Carbon Steel, which is composed mainly of iron, and Nickel were performed to provide a consistent and an interpretative check for the SS-304 reflector experiment. The experimental results comprise critical control bank positions, temperatures and reactivities as a function of the number of the plates. Particularly to the case of Nickel, the experimental data are unique of its kind. The theoretical analysis was performed by MCNP-5 with the nuclear data library ENDF/B-VII.0. It was shown that this nuclear data library has a very good performance up to thirteen plates and overestimates the reactivity for higher number of plates independently of the type of the reflector.

Santos, Adimir dos; Andrade e Silva, Graciete Simoes de; Jerez, Rogerio; Liambos Mura, Luis Felipe; Fuga, Rinaldo [Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP Av. Prof. Lineu Prestes 2242 - CEP 05508-000 Sao Paulo, SP (Brazil)

2013-05-06T23:59:59.000Z

444

Microstructure Components and Mechanical Properties of an ...  

Science Conference Proceedings (OSTI)

Effects of Microstructural and Mechanical Length Scales on Fatigue Crack ... Components and Mechanical Properties of an Acicular Ferrite Pipeline Steel.

445

Tools to Implement MPDV Component Characteristics  

SciTech Connect

This slide show presents work on photonic Doppler velocimetry multiplexing techniques, particularly as regards measurements on components.

Pena, M; Daykin, E; Emmit, R; Garza, A; Gibo, M; Hutchins, M; Perez, C; Teel, M

2012-10-22T23:59:59.000Z

446

Uranium Weapons Components Successfully Dismantled | National...  

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

Uranium Weapons Components Successfully Dismantled | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy...

447

Tensor Principal Component Analysis via Convex Optimization  

E-Print Network (OSTI)

Dec 11, 2012 ... Keywords: Tensor; Principal Component Analysis; Low Rank; Nuclear Norm; Semidefinite Programming Relaxation. Category 1: Convex and ...

448

Water Bugs  

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

Bugs Bugs Nature Bulletin No. 221-A March 12, 1966 Forest Preserve District of Cook County Seymour Simon, President Roland F. Eisenbeis, Supt. of Conservation WATER BUGS It is fascinating to lie in a boat or on a log at the edge of the water and watch the drama that unfolds among the small water animals. Among the star performers in small streams and ponds are the Water Bugs. These are aquatic members of that large group of insects called the "true bugs", most of which live on land. Moreover, unlike many other types of water insects, they do not have gills but get their oxygen directly from the air. Those that do go beneath the surface usually carry an oxygen supply with them in the form of a shiny glistening sheath of air imprisoned among a covering of fine waterproof hairs. The common water insect known to small boys at the "Whirligig Bug" is not a water bug but a beetle.

449

Manufacturing complex silica aerogel target components  

SciTech Connect

Aerogel is a material used in numerous components in High Energy Density Physics targets. In the past these components were molded into the proper shapes. Artifacts left in the parts from the molding process, such as contour irregularities from shrinkage and density gradients caused by the skin, have caused LANL to pursue machining as a way to make the components.

Defriend Obrey, Kimberly Ann [Los Alamos National Laboratory; Day, Robert D [Los Alamos National Laboratory; Espinoza, Brent F [Los Alamos National Laboratory; Hatch, Doug [Los Alamos National Laboratory; Patterson, Brian M [Los Alamos National Laboratory; Feng, Shihai [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

450

Learning from the future of component repositories  

Science Conference Proceedings (OSTI)

An important aspect of the quality assurance of large component repositories is the logical coherence of component metadata. We argue that it is possible to identify certain classes of such problems by checking relevant properties of the possible future ... Keywords: component repository, quality assurance, speculative analysis

Pietro Abate; Roberto Di Cosmo; Ralf Treinen; Stefano Zacchiroli

2012-06-01T23:59:59.000Z

451

Experimental Study of Solvent Based Emulsion Injection to Enhance Heavy Oil Recovery  

E-Print Network (OSTI)

This study presents the results of nano-particle and surfactant-stabilized solvent-based emulsion core flooding studies under laboratory conditions that investigate the recovery mechanisms of chemical flooding in a heavy oil reservoir. In the study, bench tests, including the phase behavior test, rheology studies and interfacial tension measurement are performed and reported for the optimum selecting method for the nano-emulsion. Specifically, nano-emulsion systems with high viscosity have been injected into sandstone cores containing Alaska North Slope West Sak heavy oil with 16 API, which was dewatered in the laboratory condition. The experiment results suggest that the potential application of this kind of emulsion flooding is a promising EOR (enhanced oil recovery) process for some heavy oil reservoirs in Alaska, Canada and Venezuela after primary production. Heavy oil lacks mobility under reservoir conditions and is not suitable for the application of the thermal recovery method because of environmental issues or technical problems. Core flooding experiments were performed on cores with varied permeabilities. Comparisons between direct injection of nano-emulsion systems and nano-emulsion injections after water flooding were conducted. Oil recovery information is obtained by material balance calculation. In this study, we try to combine the advantages of solvent, surfactant, and nano-particles together. As we know, pure miscible solvent used as an injection fluid in developing the heavy oil reservoir does have the desirable recovery feature, however it is not economical. The idea of nano-particle application in an EOR area has been recently raised by researchers who are interested in its feature-reaction catalysis-which could reduce in situ oil viscosity and generate emulsion without surfactant. Also, the nano-particle stabilized emulsions can long-distance drive oil in the reservoir, since the nano-particle size is 2-4 times smaller than the pore throat. In conclusion, the nano-emulsion flooding can be an effective enhancement for an oil recovery method for a heavy oil reservoir which is technically sensitive to the thermal recovery method.

Qiu, Fangda

2010-05-01T23:59:59.000Z

452

Definition: Water Cooling | Open Energy Information  

Open Energy Info (EERE)

Water Cooling Water Cooling Water cooling is commonly defined as a method of using water as a heat conduction to remove heat from an object, machine, or other substance by passing cold water over or through it. In energy generation, water cooling is typically used to cool steam back into water so it can be used again in the generation process.[1] View on Wikipedia Wikipedia Definition Water cooling is a method of heat removal from components and industrial equipment. As opposed to air cooling, water is used as the heat conductor. Water cooling is commonly used for cooling automobile internal combustion engines and large industrial facilities such as steam electric power plants, hydroelectric generators, petroleum refineries and chemical plants. Other uses include cooling the barrels of machine guns, cooling of

453

EXTENSION WATER SUMMIT PRIORITY: WATER CONSERVATION  

E-Print Network (OSTI)

EXTENSION WATER SUMMIT PRIORITY: WATER CONSERVATION Leadership Team Subcommittee: Joan Bradshaw Michael Dukes Pierce Jones Kati Migliaccio #12;Water Conservation - Situation · Florida water supplies;Water Conservation Initiative 2: Enhancing and protecting water quality, quantity, and supply Priority 1

Slatton, Clint

454

16. Heavy-Quark and Soft-Collinear Effective Theory 1 16. Heavy-Quark and Soft-Collinear Effective Theory  

E-Print Network (OSTI)

16. Heavy-Quark and Soft-Collinear Effective Theory 1 16. Heavy-Quark and Soft-Collinear Effective the quantum fluctuations of such heavy particles are "integrated out" from the generating functional integral. Beringer et al.(PDG), PR D86, 010001 (2012) (http://pdg.lbl.gov) June 18, 2012 16:19 #12;2 16. Heavy

455

Spatial Water Balance in Texas  

E-Print Network (OSTI)

Water availability is critical to the economy in the state of Texas. Numerous reservoirs and conveyance structures have been constructed across the State to meet the water supply needs of farmers, municipalities, industries, and power generating facilities. Despite this extensive water management system, water supply remains a concern because of increasing populations and uncertainties about climate stability. The rainfall map of Texas shown in Figure 1.1 clearly shows that water management is a spatial problem. The State as a whole receives about 711 mm year-1 of rainfall, while the area of the State east of the 100th meridian receives 890 mm year-1 and the area west of the 100th meridian receives only 457 mm year-1. In addition to water supply concerns, the assessment of non-point source pollution is another important issue that is largely dependent on the spatial distribution of runoff. Although, the focus of this report is not to address water supply or pollution issues directly, an improved understanding of the spatial water balance - the partitioning of precipitation between evaporation, runoff, and groundwater recharge at different points in space - will directly benefit those who wish to assess water resource availability and non-point source pollution potential across the State. The goal of this study was to gain an improved understanding of the stocks of water in different components (air, soil, water bodies) of the hydrologic cycle and the fluxes between these components. A basic approach for determining stocks and fluxes involves the calculation of a water balance. A water balance, applied to a particular control volume, is an application of the law of conservation of mass which states that matter cannot be created or destroyed. To achieve a balance, the rate of change of storage of water within the control volume must be equal to the difference between its rates of inflow and outflow across the control surface. In this study, three independent water balance models were constructed to model different components of the hydrologic cycle - an atmospheric water balance, a soil-water balance, and a surface water balance. These models were constructed using a geographic information system (GIS). A GIS provides a framework for storing and manipulating spatial data and facilitates modeling on control volumes of various sizes and shapes. In all three cases, the choice of modeling unit was driven by the resolution and characteristics of the input data. The control volumes for the atmospheric, soil, and surface water balance models respectively are (1) an imaginary column confined horizontally by the boundary of Texas and extending to the 300 mb pressure level, (2) 0.5° cells with a depth equal to the plant-extractable water capacity of the soil, and (3) 166 gaged watersheds of differing sizes and shapes. Neither the atmospheric nor the surface water balance involve any simulation of physical processes and are simply mass balances based on empirical data. The soil-water balance does attempt to simulate evaporation from the soil through the use of a soil-moisture extraction function. Both the atmospheric and soil-water balance models are time-varying models, while the surface water balance model is steady-state and uses an empirical relationship to estimate mean annual runoff and evaporation in ungaged areas. One advantage of making three independent water balance calculations is that checks for consistency can be made among the three models. For example, all three models yield an estimate of actual evapotranspiration which is a difficult quantity to estimate, particularly at the regional scale. Previous studies at the scale of Texas have estimated only evaporation from open water surfaces and potential evapotranspiration from the land surface (TDWR, 1983; Dugas and Ainsworth, 1983).

Reed, Seann; Maidment, David; Patoux, Jerome

1994-11-01T23:59:59.000Z

456

Projects at the Component Development and Integration Facility. Quarterly technical progress report, January 1, 1994--March 31, 1994  

Science Conference Proceedings (OSTI)

This quarterly technical progress report presents progress on the projects at the Component Development and Integration Facility (CDIF) during the second quarter of FY94. The CDIF is a major US Department of Energy test facility in Butte, Montana, operated by MSE, Inc. Projects in progress include: Biomass Remediation Project; Heavy Metal-Contaminated Soil Project; MHD Shutdown; Mine Waste Technology Pilot Program; Plasma Projects; Resource Recovery Project; Sodium Sulfide/Ferrous Sulfate Project; and Spray Casting Project.

Not Available

1994-08-01T23:59:59.000Z

457

Method of using infrared radiation for assembling a first component with a second component  

DOE Patents (OSTI)

A method of assembling a first component for assembly with a second component involves a heating device which includes an enclosure having a cavity for inserting a first component. An array of infrared energy generators is disposed within the enclosure. At least a portion of the first component is inserted into the cavity, exposed to infrared energy and thereby heated to a temperature wherein the portion of the first component is sufficiently softened and/or expanded for assembly with a second component.

Sikka, Vinod K. (Oak Ridge, TN); Whitson, Barry G. (Corryton, TN); Blue, Craig A. (Knoxville, TN)

1999-01-01T23:59:59.000Z

458

Would Border Carbon Adjustments prevent carbon leakage and heavy industry  

E-Print Network (OSTI)

No 52-2013 Would Border Carbon Adjustments prevent carbon leakage and heavy industry halshs-00870689,version1-7Oct2013 #12;Would Border Carbon Adjustments prevent carbon leakage and heavy The efficiency of unilateral climate policies may be hampered by carbon leakage and competitiveness losses

Recanati, Catherine

459

Fuel Oil Prepared by Blending Heavy Oil and Coal Tar  

Science Conference Proceedings (OSTI)

The effect of temperature, harmonic ration, surfactant and shearing to fuel oil prepared by blending heavy oil and coal tar were detailedly studied. The results show that the viscosity of the blended oil increases gradually with the increase of harmonic ... Keywords: coal tar, heavy oil, blending, surfactant

Guojie Zhang; Xiaojie Guo; Bo Tian; Yaling Sun; Yongfa Zhang

2009-10-01T23:59:59.000Z

460

Space-optimal heavy hitters with strong error bounds  

Science Conference Proceedings (OSTI)

The problem of finding heavy hitters and approximating the frequencies of items is at the heart of many problems in data stream analysis. It has been observed that several proposed solutions to this problem can outperform their worst-case guarantees ... Keywords: Frequency estimation, heavy hitters, streaming algorithms

Radu Berinde; Piotr Indyk; Graham Cormode; Martin J. Strauss

2010-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy water components" 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

Tons of Heavy Metals in Mill Creek Sediments Heather Freeman  

E-Print Network (OSTI)

with industries. Paper, woolen, flour, and cotton mills, starch factories, slaughterhouses, distilleriesTons of Heavy Metals in Mill Creek Sediments Heather Freeman 8/30/99 Geology Department Advisors: Dr. Kees DeJong Dr. Barry Manyard Dr. David Nash #12;Tons of heavy metals in Mill Creek sediments

Maynard, J. Barry

462

Microscopic Calculation of Fusion: Light to Heavy Systems  

E-Print Network (OSTI)

The density-constrained time-dependent Hartree-Fock (DC-TDHF) theory is a fully microscopic approach for calculating heavy-ion interaction potentials and fusion cross sections below and above the fusion barrier. We discuss recent applications of DC-TDHF method to fusion of light and heavy neutron-rich systems.

A. S. Umar; V. E. Oberacker; J. A. Maruhn; R. Keser

2013-10-02T23:59:59.000Z

463

Comprehensive study of a heavy fuel oil spill : modeling and analytical approaches to understanding environmental weathering  

E-Print Network (OSTI)

Driven by increasingly heavy oil reserves and more efficient refining technologies, use of heavy fuel oils for power generation is rising. Unlike other refined products and crude oils, a large portion of these heavy oils ...

Lemkau, Karin Lydia

2012-01-01T23:59:59.000Z

464

Abstract This research investigates the requirements for proactive service delivery for heavy industrial equipment  

E-Print Network (OSTI)

Abstract ­ This research investigates the requirements for proactive service delivery for heavy. Keywords: Service contract, heavy industrial equipment, proactive service delivery, reference model. 1 Introduction Manufacturers of heavy industry are increasingly expanding into the service sector, not just

Hsu, Cheng

465

SEARCH FOR NEW YTTERBIUM-BASED HEAVY FERMION COMPOUNDS D. Bollinger, E. Morosan1  

E-Print Network (OSTI)

SEARCH FOR NEW YTTERBIUM-BASED HEAVY FERMION COMPOUNDS D. Bollinger, E on synthesizing Ytterbium-based heavy fermions that we believe will display these transitions compounds containing Ce have been found to be heavy fermions, one

Mellor-Crummey, John

466

Studies in ion source development for application in heavy ion fusion  

E-Print Network (OSTI)

Ion Sources for Heavy Ion Fusion Applications . Ph.D.Sources for Heavy Ion Fusion . Proceedings of the ParticleDevelopment for Heavy Ion Fusion. Wollnik, H. , Optics of

Kapica, Jonathan G.

2004-01-01T23:59:59.000Z

467

Fixation and partitioning of heavy metals in slag after incineration of sewage sludge  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer The contents and partitioning of HMs in slag of sludge incineration were examined. Black-Right-Pointing-Pointer The fixation rate decreases with residential time and finally keeps a constant. Black-Right-Pointing-Pointer Water mass fraction of 55% is optimal for the sediment for Ni, Mn, Zn, Cu and Cr. Black-Right-Pointing-Pointer Water mass fraction of 75% is optimal for the sediment for Pb. Black-Right-Pointing-Pointer We found higher temperature versus lower non-residual fraction except that of Pb. - Abstract: Fixation of heavy metals in the slag produced during incineration of sewage sludge will reduce emission of the metals to the atmosphere and make the incineration process more environmentally friendly. The effects of incineration conditions (incineration temperature 500-1100 Degree-Sign C, furnace residence time 0-60 min, mass fraction of water in the sludge 0-75%) on the fixation rates and species partitioning of Cd, Pb, Cr, Cu, Zn, Mn and Ni in slag were investigated. When the incineration temperature was increased from 500 to 1100 Degree-Sign C, the fixation rate of Cd decreased from 87% to 49%, while the fixation rates of Cu and Mn were stable. The maximum fixation rates for Pb and Zn and for Ni and Cr were reached at 900 and 1100 Degree-Sign C, respectively. The fixation rates of Cu, Ni, Cd, Cr and Zn decreased as the residence time increased. With a 20 min residence time, the fixation rates of Pb and Mn were low. The maximum fixation rates of Ni, Mn, Zn, Cu and Cr were achieved when the mass fraction of water in the sludge was 55%. The fixation rate of Cd decreased as the water mass fraction increased, while the fixation rate of Pb increased. Partitioning analysis of the metals contained in the slag showed that increasing the incineration temperature and residence time promoted complete oxidation of the metals. This reduced the non-residual fractions of the metals, which would lower the bioavailability of the metals. The mass fraction of water in the sludge had little effect on the partitioning of the metals. Correlation analysis indicated that the fixation rates of heavy metals in the sludge and the forms of heavy metals in the incinerator slag could be controlled by optimization of the incineration conditions. These results show how the bioavailability of the metals can be reduced for environmentally friendly disposal of the incinerator slag.

Chen Tao [State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640 (China); Graduate School of Chinese Academy of Sciences, Beijing 100082 (China); Yan Bo, E-mail: yanbo2007@gig.ac.cn [State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640 (China)

2012-05-15T23:59:59.000Z

468

Literature review on the use of bioaccumulation for heavy metal removal and recovery. Volume 2  

Science Conference Proceedings (OSTI)

Bioaccumulation of metals by microbes -- `` bioremoval`` -- is a powerful new technology for the concentration, recovery, and removal of toxic heavy metals and radionuclides from waste streams and contaminated environments. Algae are particularly well suited for metal bioremoval. A recent commercial application of bioremoval utilizes inert (dead) immobilized microalgae biomass as ion exchange materials for the removal of heavy metals from industrial waste waters. Also, living microalgal cultures have been used to remove metals from mine effluents. Microbial cells and biomass can bioaccumulate metals and radionuclides by a large variety of mechanisms, both dependent and independent of cell metabolism. Microbial cell walls can act as ion exchange and metal complexation agents. Heavy metals can precipitate and even crystallize on cell surfaces. Metabolically produced hydrogen sulfide or other metabolic products can bioprecipitate heavy metals. Many microbes produce both intra- and extracellular metal complexing agents which could be considered in practical metal removal processes. Bioremoval processes are greatly affected by the microbial species and even strain used, pH, redox potential, temperature, and other conditions under which the microbes are grown. Development of practical applications of bioremoval requires applies research using the particular waste solutions to be treated, or close simulations thereof. From a practical perspective, the selection of the microbial biomass and the process for contacting the microbial biomass with the metal containing solutions are the key issues. Much of the recent commercial R&D has emphasized commercially available, inert, microbial biomass sources as these can be acquired in sufficient quantities at affordable costs. The fundamental research and practical applications of bioaccumulation by microalgae suggests these organisms warrant a high priority in the development of advanced bioremoval processes.

Benemann, J.R. [Benemann (J.R.), Pinole, CA (United States); Wilde, E.W. [Westinghouse Savannah River Co., Aiken, SC (United States)

1991-02-01T23:59:59.000Z

469

Literature review on the use of bioaccumulation for heavy metal removal and recovery  

SciTech Connect

Bioaccumulation of metals by microbes -- bioremoval'' -- is a powerful new technology for the concentration, recovery, and removal of toxic heavy metals and radionuclides from waste streams and contaminated environments. Algae are particularly well suited for metal bioremoval. A recent commercial application of bioremoval utilizes inert (dead) immobilized microalgae biomass as ion exchange materials for the removal of heavy metals from industrial waste waters. Also, living microalgal cultures have been used to remove metals from mine effluents. Microbial cells and biomass can bioaccumulate metals and radionuclides by a large variety of mechanisms, both dependent and independent of cell metabolism. Microbial cell walls can act as ion exchange and metal complexation agents. Heavy metals can precipitate and even crystallize on cell surfaces. Metabolically produced hydrogen sulfide or other metabolic products can bioprecipitate heavy metals. Many microbes produce both intra- and extracellular metal complexing agents which could be considered in practical metal removal processes. Bioremoval processes are greatly affected by the microbial species and even strain used, pH, redox potential, temperature, and other conditions under which the microbes are grown. Development of practical applications of bioremoval requires applies research using the particular waste solutions to be treated, or close simulations thereof. From a practical perspective, the selection of the microbial biomass and the process for contacting the microbial biomass with the metal containing solutions are the key issues. Much of the recent commercial R D has emphasized commercially available, inert, microbial biomass sources as these can be acquired in sufficient quantities at affordable costs. The fundamental research and practical applications of bioaccumulation by microalgae suggests these organisms warrant a high priority in the development of advanced bioremoval processes.

Benemann, J.R. (Benemann (J.R.), Pinole, CA (United States)); Wilde, E.W. (Westinghouse Savannah River Co., Aiken, SC (United States))

1991-02-01T23:59:59.000Z

470

Safe water storage in Kenya's modified clay pot : standardization, tap design, and cost recovery  

E-Print Network (OSTI)

One of the main components necessary for providing safe drinking water for users who lack piped water in the home is the ability to safely store it in the home. Users in the Nyanza Province of Kenya frequently carry water ...

Young, Suzanne E

2005-01-01T23:59:59.000Z

471

Effects of Climate Variability on Water Storage in the Colorado River Basin  

Science Conference Proceedings (OSTI)

Understanding the long-term (interannual–decadal) variability of water availability in river basins is paramount for water resources management. Here, the authors analyze time series of simulated terrestrial water storage components, observed ...

Ruud Hurkmans; Peter A. Troch; Remko Uijlenhoet; Paul Torfs; Matej Durcik

2009-10-01T23:59:59.000Z

472

Clean Diesel Component Improvement Program  

DOE Green Energy (OSTI)

The research conducted in this program significantly increased the knowledge and understanding in the fields of plasma physics and chemistry in diesel exhaust, the performance and characteristics of multifunctional catalysts in diesel exhaust, and the complexities of controlling a combination of such systems to remove NOx. Initially this program was designed to use an in-line plasma system (know as a plasma assisted catalyst system or PAC) to convert NO {yields} NO{sub 2}, a more catalytically active form of nitrogen oxides, and to crack hydrocarbons (diesel fuel in particular) into active species. The NO{sub 2} and the cracked hydrocarbons were then flowed over an in-line ceramic NOx catalyst that removed NO{sub 2} from the diesel exhaust. Even though the PAC system performed well technically and was able to remove over 95% of NOx from diesel exhaust the plasma component proved not to be practical or commercially feasible. The lack of practical and commercial viability was due to high unit costs and lack of robustness. The plasma system and its function was replaced in the NOx removal process by a cracking reforming catalyst that converted diesel fuel to a highly active reductant for NOx over a downstream ceramic NOx catalyst. This system was designated the ceramic catalyst system (CCS). It was also determined that NO conversion to NO{sub 2} was not required to achieve high levels of NOx reduction over ceramic NOx catalyst if that catalyst was properly formulated and the cracking reforming produced a reductant optimized for that NOx catalyst formulation. This system has demonstrated 92% NOx reduction in a diesel exhaust slipstream and 65% NOx reduction from the full exhaust of a 165 hp diesel engine using the FTP cycle. Although this system needs additional development to be commercial, it is simple, cost effective (does not use precious metals), sulfur tolerant, operates at high space velocities, does not require a second fluid be supplied as a reductant, has low parasitic loss of 2-3% and achieves high levels of NOx reduction. This project benefits the public by providing a simple low-cost technology to remove NOx pollutants from the exhaust of almost any combustion source. The reduction of NOx emissions emitted into the troposphere provides well documented improvement in health for the majority of United States citizens. The emissions reduction produced by this technology helps remove the environmental constraints to economic growth.

None

2005-06-30T23:59:59.000Z

473

Experimental Study of In-Situ Upgrading for Heavy Oil Using Hydrogen Donors and Catalyst under Steam Injection Condition  

E-Print Network (OSTI)

This research is a study of the in-situ upgrading of Jobo crude oil using steam, tetralin or decalin, and catalyst (Fe(acac)?) at temperatures of 250 °C, 275 °C and 300 °C for 24 hours, 48 hours and 72 hours using an autoclave. Viscosity, API gravity and compositional changes were investigated. We found that tetralin and decalin alone were good solvents for heavy oil recovery. Tetralin or decalin at concentrations of 9% (weight basis) could reduce the Jobo crude oil viscosity measured at 50 °C by 44±2% and 39±3%. Steam alone had some upgrading effects. It could reduce the oil viscosity by 10% after 48 hours of contact at 300°C. Tetralin, decalin or catalyst showed some upgrading effects when used together with steam and caused 5.4±4%, 4±1% and 19±3% viscosity reduction compared with corresponding pre-upgrading mixture after 48 hours of reaction at 300°C. The combination of hydrogen donor tetralin or decalin and catalyst reduced the viscosity of the mixture the most, by 56±1% and 72±1% compared with pre-upgrading mixture. It meant that hydrogen donors and catalyst had strong synergetic effects on heavy oil upgrading. We also found that 300 °C was an effective temperature for heavy oil upgrading with obvious viscosity reduction in the presence of steam, hydrogen donors and catalyst. Reaction can be considered to have reached almost equilibrium condition after 48 hours. The GC-MS analysis of the gas component showed that light hydrocarbon gases and CO? were generated after reaction. The viscosity reduction from decalin use is larger than that of tetralin because decalin has more hydrogen atoms per molecule than tetralin. A mechanism of transferring H (hydrogen atom) from H?O and hydrogen donors to heavy oil, which can lead to structure and composition changes in heavy oil, is explained. The study has demonstrated that in-situ heavy oil upgrading has great potential applications in heavy and extra heavy oil recovery.

Zhang, Zhiyong

2011-05-01T23:59:59.000Z

474

Heavy Oil Consumption Reduction Program (Quebec, Canada) | Department of  

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

Heavy Oil Consumption Reduction Program (Quebec, Canada) Heavy Oil Consumption Reduction Program (Quebec, Canada) Heavy Oil Consumption Reduction Program (Quebec, Canada) < Back Eligibility Commercial Agricultural Industrial Construction Savings Category Solar Buying & Making Electricity Maximum Rebate $5 million per site Program Info Funding Source Government of Quebec State Quebec Program Type Rebate Program Provider Agence de l'efficacité énergétique This program helps heavy oil consumers move toward sustainable development while improving their competitive position by reducing their consumption. Financial assistance is offered to carry out various analyses as well as implement energy efficient measures relating to heavy fuel oil or to switch to other forms of energy containing fewer pollutants, such as natural gas,

475

Helicity Probabilities For Heavy Quark Fragmentation Into Excited Mesons  

E-Print Network (OSTI)

In the fragmentation of a heavy quark into a heavy meson whose light degrees of freedom have angular momentum $3/2$, all the helicity probabilities are completely determined in the heavy quark limit up to a single probability $w_{3/2}$. We point out that this probability depends on the longitudinal momentum fraction $z$ of the meson and on its transverse momentum $p_\\bot$ relative to the jet axis. We calculate $w_{3/2}$ as a function of scaling variables corresponding to $z$ and $p_\\bot$ for the heavy quark limit of the perturbative QCD fragmentation functions for $b$ quark to fragment into $(b \\bar c)$ mesons. In this model, the light degrees of freedom prefer to have their angular momentum aligned transverse to, rather than along, the jet axis. Implications for the production of excited heavy mesons, like $D^{**}$ and $B^{**}$, are discussed.

Tzu Chiang Yuan

1994-07-20T23:59:59.000Z

476

Reusing Water  

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

Reusing Water Reusing Water Reusing Water Millions of gallons of industrial wastewater is recycled at LANL by virtue of a long-term strategy to treat wastewater rather than discharging it into the environment. April 12, 2012 Water from cooling the supercomputer is release to maintain