263 Matching Results

Search Results

Results: 1 - 24 next
open access

Physiopathology of blood platelets and development of platelet substitutes. Progress report, August 1, 1975--July 31, 1976

Description: Progress is reported on studies on the physiology of blood platelets in thrombocytopenic patients and rabbits. Methods for the detection of platelet antibodies and the preservation of platelets in vitro were investigated. Studies on the effect of low doses of x irradiation (up to 1000 R) on platelet function indicate that platelets exposed to ionizing radiation have increased functional activity. A list is included of publications that report the results of the studies in detail.
Date: April 28, 1976
Creator: Baldini, M G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Natural hazards that may trigger a radiological release from a plutonium processing facility

Description: Calculations show the probability of a tornado striking a plutonium area at Rocky Flats is 2.2 x 10/sup -4/ per year. The source term (expected value of plutonium release) should such an event occur is calculated at 3.3 x 10/sup -7/ grams. The source term for high-velocity, downslope winds is higher--2.2 x 10/sup -3/ grams. The probability of a meteorite that weighs one or more pounds (453 grams) striking a plutonium area is estimated at 8.88 x 10/sup -7/ per year. Because of this small probabi… more
Date: April 28, 1977
Creator: Selvidge, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comment on Flavor-Changing Processes and CP Violation in the S Sub 3 Times Z Sub 3 Model''

Description: Deshpande, Gupta and Pal neglected the presence of a complex phase in the mass matrix and in the Yukawa coupling matrices of the down-type quarks I argue that phase should not be neglected, because it can explain the observed CP violation. The mechanism of CP violation considered by those authors may certainly be present, but for simplicity one may want to eliminate it, by restricting the soft-breaking sector of the Higgs potential in such a way that complex Higgs bosons propagators do not occu… more
Date: April 28, 1992
Creator: Lavoura, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Report to the Congress: liquid metal fast breeder reactor program--past, present, and future, Energy Research and Development Administration

Description: The past, present, and future of the liquid metal fast breeder reactor (LMFBR) program, the Nation's highest priority energy program, are studied. ERDA anticipates that the operation of the first large commercial breeder will start in 1987, and that 186 commercial-size breeders will be in operation by the year 2000. The breeder program is made up of six major areas, each dealing with an important element of technology: reactor physics; fuels and materials; fuel recycle; safety; component develo… more
Date: April 28, 1975
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thick Liquid-Walled Spheromak Magnetic Fusion Power Plant

Description: We assume a spheromak configuration can be made and sustained by a steady plasma gun current, which injects particles, current and magnetic field, i.e., helicity injection. The magnetic configuration is evaluated with an axisymmetric free-boundary equilibrium code, where the current profile is tailored to support an average beta of 10%. An injection current of 100 kA (125 MW of gun power) sustains the toroidal current of 40 MA. The flux linking the gun is 1/1000th of the flux in the spheromak. … more
Date: April 28, 2003
Creator: Moir, R W; Bulmer, R H; Fowler, T K; Rognlien, T D & Youssef, M Z
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Post Hoc Evaluation of Long-Term Goals for Energy Savings in the Buildings Sector: Lessons from Hindsight

Description: This report is one of two that re-examines the forecasted impact of individual programs currently within the Buildings Technology Program (BT) and the Weatherization and Intergovernmental Program (WIP) that appeared in the FY2000 Presidential Budget request. This report outlines the effects of re-estimating the FY 2000 budget request based on overlaying project data from subsequent years essentially revised out-year forecasts of project benefits. It shows that year-to-year long-term projections… more
Date: April 28, 2003
Creator: Anderson, Dave M. & Hostick, Donna J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A New Detailed Term Accounting Opacity Code: TOPAZ

Description: A new opacity code, TOPAZ, which explicitly includes configuration term structure in the bound-bound transitions is being developed. The goal is to extend the current capabilities of detailed term accounting opacity codes such as OPAL that are limited to lighter elements of astrophysical interest. At present, opacity calculations of heavier elements use statistical methods that rely on the presence of myriad spectral lines for accuracy. However, statistical approaches have been shown to be inad… more
Date: April 28, 2004
Creator: Iglesias, C A; Chen, M H; Isaacs, W; Sonnad, V & Wilson, B G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Recovery and Visualization of 3D Structure of Chromosomes from Tomographic Reconstruction Images

Description: The objectives of this work include automatic recovery and visualization of a 3D chromosome structure from a sequence of 2D tomographic reconstruction images taken through the nucleus of a cell. Structure is very important for biologists as it affects chromosome functions, behavior of the cell and its state. Chromosome analysis is significant in the detection of deceases and in monitoring environmental gene mutations. The algorithm incorporates thresholding based on a histogram analysis with a … more
Date: April 28, 2004
Creator: Babu, S; Liao, P; Shin, M C & Tsap, L V
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Angular and Linear Velocity Estimation for a Re-Entry Vehicle Using Six Distributed Accelerometers: Theory, Simulation and Feasibility

Description: This report describes a feasibility study. We are interested in calculating the angular and linear velocities of a re-entry vehicle using six acceleration signals from a distributed accelerometer inertial measurement unit (DAIMU). Earlier work showed that angular and linear velocity calculation using classic nonlinear ordinary differential equation (ODE) solvers is not practically feasible, due to mathematical and numerical difficulties. This report demonstrates the theoretical feasibility of u… more
Date: April 28, 2003
Creator: Clark, Grace
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dimensional Stability and Microstructure Evolution in Irradiated Systems with Complex Kinetics

Description: We use a combination of molecular dynamics and kinetic Monte Carlo simulations to explore the role of temperature and dose rate on damage accumulation in a model system with complex kinetics. We describe the accumulation of He-vacancy (HeV) complexes as well as vacancy and interstitial clusters as a function of irradiation temperature, dose, and dose rate. We show that nucleation of stable HeV complexes (voids and bubbles) at low temperature and flux takes place at extremely low doses. We also … more
Date: April 28, 2003
Creator: Diaz de la Rubia, T; Caturla, M J & Fluss, M J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pilot Study of the Effects of Simulated Turbine Passage Pressure on Juvenile Chinook Salmon Acclimated with Access to Air at Absolute Pressures Greater than Atmospheric

Description: The impacts of pressure on juvenile salmon who pass through the turbines of hydroelectric dams while migrating downstream on the Columbia and Snake rivers has not been well understood, especially as these impacts relate to injury to the fish's swim bladder. The laboratory studies described here were conducted by Pacific Northwest National Laboratory for the US Army Corps of Engineers Portland District at PNNL's fisheries research laboratories in 2004 to investigate the impacts of simulated turb… more
Date: April 28, 2005
Creator: Carlson, Thomas J. & Abernethy, Cary S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanical Design of a Heavy Ion Beam Dump for the RIA Fragmentation Line

Description: The RIA fragmentation line requires a beam stop for the primary beam downstream of the first dipole magnet. The beam may consist of U, Ca, Sn, Kr, or O ions. with a variety of power densities. The configuration with highest power density is for the U beam, with a spot size of 3 cm x 3 cm and a total power of up to 300 kW. The mechanical design of the dump that meets these criteria consists of a 70 cm diameter aluminum wheel with water coolant channels. A hollow drive shaft supplies the coolant … more
Date: April 28, 2005
Creator: Stein, W.; Ahle, L. E. & Conner, D. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Comment on "Flavor-Changing Processes and CP Violation in the S{sub 3} {times} Z{sub 3} Model"

Description: Deshpande, Gupta and Pal neglected the presence of a complex phase in the mass matrix and in the Yukawa coupling matrices of the down-type quarks I argue that phase should not be neglected, because it can explain the observed CP violation. The mechanism of CP violation considered by those authors may certainly be present, but for simplicity one may want to eliminate it, by restricting the soft-breaking sector of the Higgs potential in such a way that complex Higgs bosons propagators do not occu… more
Date: April 28, 1992
Creator: Lavoura, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sperm cells as vectors in the production of transgenic animals

Description: Transgenic animals are used in industry and in biomedical research in order to provide in vivo experimental model systems. Sperm cells have been reported used as vectors in the production of transgenic animals before, however no approach has of yet proven to be successful. Fertilizing eggs with genetically modified sperm would be advantageous in that sperm are readily accessible and stable, and eggs can be fertilized by modified sperm cells in vivo. Recent elucidations regarding the unique mann… more
Date: April 28, 1993
Creator: Prince, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DC CICC retrofit magnet preliminary design, protection analysis, and software development. Final report

Description: The MIT Plasma Fusion Center magnet technology development effort, in support of the DOE/PETC MHD program, has culminated in two recent innovations which, when combined, will not only improve the reliability of commercial scale MHD magnets but will also reduce their cost by a factor of two. The first of these is a new form of Cable In Conduit Conductor (CICC) designed specifically for large scale DC superconducting magnets and the second is a highly efficient, quasi-momentless force containment… more
Date: April 28, 1994
Creator: Marston, P. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Durability of glasses vitrified from high copper feed in the 774 Research Melter

Description: Small scale crucible studies were performed by Schumacher to examine the effects of formate and nitrate on glass redox at high copper levels. The results of the crucible studies were used to determine the regions where copper precipitates in the glass. However, durability tests were not performed on the glass samples. Studies were performed in the 774 Research Melter using a simulated feed from the Purex 4 Campaign in the Integrated DWPF Melter System (IDMS). Three runs were performed with this… more
Date: April 28, 1993
Creator: Andrews, M. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Engineering bases for power levels and exposures - April, 1960, thru December, 1960

Description: It is the purpose of this document to provide assistance to the Manufacturing Section personnel in determining their future operating plans. In general, the inter-relationship of such engineering parameters as flow, reactor orificing, rupture performance, etc. has been considered. The effect of these engineering parameters are summed up in our recommendations for {open_quotes}Operating Plans{close_quotes} shown graphically in this document. It is to be emphasized that these plans do not reflect… more
Date: April 28, 1960
Creator: Graves, S. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Engineering development of advanced coal-fired low-emission boiler systems. Quarterly technical progress report, January 1--March 31, 1994

Description: This project is concerned with the development of an a coal-fired low-emission boiler system. During march, separate kick-off meetings were held with PSI Powerserve, Raytheon and B&W`s Environmental Equipment Division to begin work on Phase I Task 5, the Commercial Plant Design. In addition, a meeting was held with MIT to discuss and review work completed and schedule work remaining on the project.
Date: April 28, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measurement of plutonium and americium volatilities under thermal process conditions. Final report

Description: We have used the transpiration method to measure volatilities of Pu and Am from PuO{sub 2}(s) and PuO{sub 2}/2% AmO{sub 2}(s) in the presence of steam and oxygen at temperatures of 1230--1430 K. We find the volatile species to be PuO{sub 2}(OH){sub 2}(g) and AmO{sub 2}(OH){sub 2}(g) at vapor pressures on the order of 10{sup {minus}10} atm and 10 {sup {minus}12} atm respectively under measurement conditions. For the Pu volatilization reaction, PuO{sub 2}(s) + 1/2 0{sub 2}(9) + H{sub 2}0(g) = PuO… more
Date: April 28, 1993
Creator: Krikorian, O. H.; Condit, R. H.; Fontes, A. S. Jr.; Fleming, D. L.; Magana, J. W.; Morris, W. F. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A computer-based training system combining virtual reality and multimedia

Description: Training new users of complex machines is often an expensive and time-consuming process. This is particularly true for special purpose systems, such as those frequently encountered in DOE applications. This paper presents a computer-based training system intended as a partial solution to this problem. The system extends the basic virtual reality (VR) training paradigm by adding a multimedia component which may be accessed during interaction with the virtual environment: The 3D model used to cre… more
Date: April 28, 1993
Creator: Stansfield, S. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High SO{sub 2} removal efficiency testing. Technical progress report

Description: The project involves testing at six full-scale utility flue gas desulfurization (FGD) systems, to evaluate low capital cost upgrades that may allow these systems to achieve up to 98% SO{sub 2} removal efficiency. The upgrades to be evaluated mostly involve using additives in the FGD systems. On the base program, testing was completed at the Tampa Electric Big Bend Station in November 1992. The upgrade option tested was DBA additive. For Option 1, at the Hoosier Energy Merom Station, three upgra… more
Date: April 28, 1994
Creator: Blythe, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen