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Theory of chemical kinetics. Progress report, January 16, 1978-January 15, 1979

Description: The Franck-Condon approximation was applied to chemical dynamics with success. It was used to study angular distributions of reaction products in atom-diatom reactions. Long-range transitions in stochastic models were considered. The hydrodynamic stability of stationary and oscillatory convection in binary fluids was studied. Efficiency of thermal engines was also studied. (DLC)
Date: January 1, 1979
Creator: Ross, J.
Partner: UNT Libraries Government Documents Department

Theory of chemical kinetics. Progress report, May 1, 1977--January 15, 1978. [Massachusetts Inst. of Tech. , Cambridge]

Description: Recent work on Franck--Condon factors in studies of the dynamics of chemical reactions is related; emphasis was on simple chemical rearrangement reactions. Other work concerned collision-free unimolecular decomposition of large molecules at a given total energy, equations of motion for simple quantum systems that are strongly driven by an external field and are modulated stochastically by a coupling to a bath, and the efficiency of rate processes in irreversible chemical reactions. This report is descriptive in nature; results of the work have been published in appropriate journals, and an extensive publication list is included. (RWR)
Date: unknown
Creator: Ross, J.
Partner: UNT Libraries Government Documents Department


Description: The role of the potential of intermolecular force in determining properties of gases at elevated temperatures is discussed. Coefficients of viscosity and selfdiffusion, isotopic reduced themaal diffusion ratios, and second virial cofficients for helium, argon, and nitrogen at 1,000, 5,000, and 15,000 d K were calculated from extrapolated potentials and from beam potentials. (W.D.M.)
Date: August 1, 1958
Creator: Amdur, I. & Ross, J.
Partner: UNT Libraries Government Documents Department


Description: An instrument for detecting Al-Si alloy penetrations in the Al jacket of fuel slugs is described. The instrument is of the eddy current type, and the sensing element is a small probe that does not touch the specimen under inspection. Al-Si inclusions 0.020 in. in diameter that penetrate to within 0.005 in. of the can surface can be detected. The response of the circuits is such that a slug 8 in. long can be scanned in 45 sec. (auth)
Date: December 1, 1957
Creator: Robinson, R.C. & Ross, J.D.
Partner: UNT Libraries Government Documents Department


Description: A tester was developed to detect nonbonded areas between the cladding and the core of hollow slugs. These slugs are one inch in diameter and eight inches long, and have a 3/8 inch axial hole. The tester employs an ultrasonic detector previously developed at the Savannah River Laboratory. A transducer 5/ 16 inch in diameter was developed to pass down the inside of the slug and a mechanical feeder was constructed to provide an automatic inspection cycle. (auth)
Date: October 1, 1956
Creator: Ross, J.D. & Leep, R.W.
Partner: UNT Libraries Government Documents Department

Thermodynamic and stochastic theory of hydrodynamic and power-producing processes. [Annual report], September 1991--September 1992

Description: Thermodynamics of the transport processes of diffusion, thermal conduction, and viscous flow at a macroscopic level are developed for the simplest cases of one-dimensional transport in fluids for individual linear and nonlinear processes approaching a stationary non-equilibrium state. Formulation has started of thermodynamic and stochastic theory of combinations of transport processes. Global thermodynamic and stochastic theory of open chemical systems frar from equilibrium is continued with analysis of a broad class of isothermal, multicomponent reaction mechanisms with multiple steady states with assumed local equilibrium. Stationary solutions are obtained of the master equation for single and multi-intermediate autocatalytic chemical systems. A kinetic potential is identified that governs the deterministic time evolution of coupled tank reactors. A second-order response theory was developed to investigate the effects of external periodic perturbations on a chemical reaction at a stable steady state in an open reactor.
Date: September 16, 1992
Creator: Ross, J.
Partner: UNT Libraries Government Documents Department

Analysis of (n,2n) cross-section measurements for nuclei up to mass 238

Description: All suitable measurements of the energy dependence of (n,2n) cross sections of all isotopes up to mass 238 have been analyzed. The objectives were to display the quality of the measured data for each isotope and to examine the systematic dependence of the (n,2n) cross section upon N, Z, and A. Graphs and tables are presented of the ratio of the asymptotic (n,2n) and nonelastic cross section to the neutron-asymmetry parameter (N--Z)/A. Similar data are presented for the derived nuclear temperature, T, and level-density parameter, $alpha$, as a function of N, Z, and A. This analysis of the results of over 145 experiments on 61 isotopes is essentially a complete review of the current status of (n,2n) cross-section measurements. (auth)
Date: June 1, 1975
Creator: Davey, W.G.; Goin, R.W. & Ross, J.R.
Partner: UNT Libraries Government Documents Department

Identification of potential participant scientists and development of procedures for a national inventory of selected biological monitoring programs: a mail questionnaire survey

Description: Procedural details of how the National Biological Monitoring Inventory was conducted are described. Results of a nationwide telephone campaign to identify principal investigators and also of a nationwide questionnaire mailing to the investigators identified are presented. On the basis of percentage of questionnaire returns (nearly 50 percent), the Inventory was judged to be successful. The communication procedures, guidelines, and formats developed may be useful to others engaged in this type of research.
Date: March 1, 1978
Creator: Kemp, H.T.; Goff, F.G. & Ross, J.W.
Partner: UNT Libraries Government Documents Department

AICD -- Advanced Industrial Concepts Division Biological and Chemical Technologies Research Program. 1993 Annual summary report

Description: The annual summary report presents the fiscal year (FY) 1993 research activities and accomplishments for the United States Department of Energy (DOE) Biological and Chemical Technologies Research (BCTR) Program of the Advanced Industrial Concepts Division (AICD). This AICD program resides within the Office of Industrial Technologies (OIT) of the Office of Energy Efficiency and Renewable Energy (EE). The annual summary report for 1993 (ASR 93) contains the following: A program description (including BCTR program mission statement, historical background, relevance, goals and objectives), program structure and organization, selected technical and programmatic highlights for 1993, detailed descriptions of individual projects, a listing of program output, including a bibliography of published work, patents, and awards arising from work supported by BCTR.
Date: March 1, 1994
Creator: Petersen, G.; Bair, K. & Ross, J.
Partner: UNT Libraries Government Documents Department

Stauts of the Laser Inertial Fusion Energy (LIFE) Hohlraum Point Design

Description: Progress on the hohlraum point design for the LIFE engine is described. New features in the original design [Amendt et al., Fus. Sci. Technol. 60, 49 (2011)] are incorporated that address the imperatives of low target cost, high manufacturing throughput, efficient and prompt material recycling, an ability for near-term testing of key target design uncertainties on the National Ignition Facility, and robustness to target chamber environment and injection insults. To this end, the novel use of Pb hohlraums and aerogel-supported liquid DT fuel loading within a high-density-carbon (HDC) ablator is implemented in the hohlraum point design.
Date: April 10, 2012
Creator: Amendt, P; Dunne, M; Ho, D; Lasinski, B; Meeker, D & Ross, J S
Partner: UNT Libraries Government Documents Department


Description: ABS>Ore from the Lakeview Mining Co. was tested in the pilot plant amd laboratory. The testing included grinding, leaching, countercurrent decantation, solvent extraction, precipitation, flotation, and molybdenum recovery. (W.L.H.)
Date: December 1, 1957
Creator: Nichols, I.L.; Tame, K.E.; Ross, J.R. & Rosenbaum, J.B.
Partner: UNT Libraries Government Documents Department

Optical performance and durability of solar reflectors protected by an alumina coating

Description: Solar thermal electric power systems use large solar reflectors to concentrate sunlight to generate electricity. The economic viability of these systems depends on developing a durable, low-cost reflector. The goals for such a reflector are specular reflectance above 90% for at least 10 years under outdoor service conditions and a large-volume manufacturing cost of less than $10.8/m{sup 2} ($1.00/ft{sup 2}). Currently, the best candidate materials for solar reflectors are silver-coated, low-iron glass and silvered polymer films. Polymer reflectors are lighter in weight, offer greater system design flexibility, and have the potential for lower cost than glass reflectors. A promising low-cost reflector consists of a silvered polymer protected by an optically transparent alumina coating. The coating is deposited by an ion-beam-assisted physical vapor deposition (IBAD) technique. Samples of this reflector have maintained high optical performance in accelerated testing at the National Renewable Energy Laboratory for more than 3000 hours. Solar reflectors produced using this technique may represent an opportunity to bring solar power generation to reality.
Date: July 1, 1996
Creator: Kennedy, C.E.; Smilgys, R.V.; Kirkpatrick, D.A. & Ross, J.S.
Partner: UNT Libraries Government Documents Department

The reapplication of energetic materials as boiler fuels

Description: Decommissioning of weapons stockpiles, off-specification production, and upgrading of weapons systems results in a large amount of energetic materials (EM) such as rocket propellant and primary explosives that need to be recycled or disposed of each year. Presently, large quantities of EM are disposed of in a process known as open-burn/open-detonation (OB/OD), which not only wastes their energy content, but may release large quantities of hazardous material into the environment. Here the authors investigate the combustion properties of several types of EM to determine the feasibility of reapplication of these materials as boiler fuels, a process that could salvage the energy content of the EM as well as mitigate any potential adverse environmental impact. Reapplication requires pretreatment of the fuels to make them safe to handle and to feed. Double-base nitrocellulose and nitroglycerin, trinitrotoluene (TNT), nitroguanidine, and a rocket propellant binder primarily composed of polybutidiene impregnated with aluminum flakes have been burned in a 100-kW downfired flow reactor. Most of these fuels have high levels of fuel-bound nitrogen, much of it bound in the form of nitrate groups, resulting in high NO{sub x} emissions during combustion. The authors have measured fuel-bound nitrate conversion efficiencies to NO{sub x} of up to 80%, suggesting that the nitrate groups do not follow the typical path of fuel nitrogen through HCN leading to NO{sub x}, but rather form NO{sub x} directly. They show that staged combustion is effective in reducing NO{sub x} concentrations in the postcombustion gases by nearly a factor of 3. In the rocket binder, measured aluminum particle temperatures in excess of 1700{degrees}C create high levels of thermal NO{sub x}, and also generate concern that molten aluminum particles could potentially damage boiler equipment. Judicious selection of the firing method is thus required for aluminum-containing materials.
Date: February 1, 1997
Creator: Buckley, S.G.; Sclippa, G.C. & Ross, J.R.
Partner: UNT Libraries Government Documents Department

Neutron beam characterization at the Neutron Radiography Reactor (NRAD)

Description: The Neutron Radiography Reactor (NRAD) is a 250-kW TRIGA Reactor operated by Argonne National Laboratory and is located near Idaho Falls, Idaho. The reactor and its facilities regarding radiography are detailed in another paper at this conference; this paper summarizes neutron flux measurements and calculations that have been performed to better understand and potentially improve the neutronics characteristics of the reactor.
Date: January 1, 1990
Creator: Imel, G.R.; Urbatsch, T.; Pruett, D.P. & Ross, J.R.
Partner: UNT Libraries Government Documents Department

High speed CAMAC differential branch highway driver

Description: A new CAMAC branch driver is described that incorporates several unusual features which combine to give reliable, high-speed performance. These include balanced line driver/receivers, stored CAMAC command lists, 8 DMA channels, pseudo LAMS, hardware priority encoding of LAMS, and hardware-implemented Q-controlled block transfers. 3 figures.
Date: January 1, 1979
Creator: McMillan, D.E.; Nelson, R.O.; Poore, R.V.; Sunier, J.W. & Ross, J.J.
Partner: UNT Libraries Government Documents Department

Fast critical experiment data for space reactors

Description: Data from a number of previous critical experiments exist that are relevant to the design concepts being considered for SP-100 and MMW space reactors. Although substantial improvements in experiment techniques have since made some of the measured quantities somewhat suspect, the basic criticality data are still useful in most cases. However, the old experiments require recalculation with modern computational methods and nuclear cross section data before they can be applied to today's designs. Recently, we have calculated about 20 fast benchmark critical experiments with the latest ENDF/B data and modern transport codes. These calculations were undertaken as a part of the planning process for a new series of benchmark experiments aimed at supporting preliminary designs of SP-100 and MMW space reactors.
Date: January 1, 1987
Creator: Collins, P.J.; McFarlane, H.F.; Olsen, D.N.; Atkinson, C.A. & Ross, J.R.
Partner: UNT Libraries Government Documents Department


Description: Resource Conservation and Recovery Act (RCRA) requirements for hazardous waste facilities include 30 years of post-closure monitoring. The use of an objective-based monitoring strategy allows for a significant reduction in the amount of groundwater monitoring required, as the groundwater remediation transitions from an active biosparging system to monitored natural attenuation. The lifecycle of groundwater activities at the landfill has progressed from detection monitoring and plume characterization, to active groundwater remediation, and now to monitored natural attenuation and postclosure monitoring. Thus, the objectives of the groundwater monitoring have changed accordingly. Characterization monitoring evaluated what biogeochemical natural attenuation processes were occurring and determined that elevated levels of radium were naturally occurring. Process monitoring of the biosparging system required comprehensive sampling network up- and down-gradient of the horizontal wells to verify its effectiveness. Currently, the scope of monitoring and reporting can be significantly reduced as the objective is to demonstrate that the alternate concentration limits (ACL) are being met at the point of compliance wells and the maximum contaminant level (MCL) is being met at the surface water point of exposure. The proposed reduction is estimated to save about $2M over the course of the remaining 25 years of postclosure monitoring.
Date: November 17, 2006
Creator: Ross, J; Walt Kubilius, W; Thomas Kmetz, T; D Noffsinger, D & Karen M Adams, K
Partner: UNT Libraries Government Documents Department