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MSS generic model: a beginning

Description: To improve communications and understanding in the field of Mass Storage Systems (MSS), the need exists to formalize the definitions and concepts of MSS. This presentation gives MSS definitions followed by the development of a generic model for MSS.
Date: January 1, 1984
Creator: Collins, W. & Miller, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experimental thin film deposition and surface analysis techniques

Description: An attempt has been made to present some of the thin-film deposition and surface analysis techniques which may be useful in growing superionic conducting materials. Emphasis is made on the importance of being careful in selecting process parameters and materials in order to produce films with properties outlined in this article. Also, special care should be given to proper consideration of grain boundary effects.
Date: January 1, 1986
Creator: Collins, W.E. & Rambabu, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Project Management Actions Demolition of a Research Facility Building 431

Description: The Demolition of B431 is required to achieve the mission of LLNL and the NNSA FIRP objectives by: (1) Supporting the NNSA Infrastructure Plan goal to ''demolish excess facilities as early as possible''; (2) Banking square footage that allows continued application of advanced science and nuclear technology to the Nation's defense; and (3) Helping maintain and enhance the safety, security, and reliability of the weapons stockpile. A significant effort has been put into the demolition concept in … more
Date: September 6, 2005
Creator: Collins, W L
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Partner: UNT Libraries Government Documents Department
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Ion scattering experiment on Ni(110) surface

Description: Light emission from excited neutral scattered Ne and sputtered Ni were investigated using the LEIS method. A 5-keV Ne/sup +/ beam was used to bombard a Ni(110) surface. Results of the light emission data is presented and compared with neutral production of Ne. 4 refs., 3 figs.
Date: January 1, 1986
Creator: Nicholas, B.; Rambabu, B. & Collins, W.E.
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Partner: UNT Libraries Government Documents Department
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Rutherford scattering on nickel

Description: The study of 5 keV Ne/sup +/ ions on a Ni(110) surface have been studied by the Time-of-Flight (TOF) method. The effect of crystal orientation on neutral and ion yield have been investigated. 2 refs. 5 figs.
Date: January 1, 1986
Creator: Lars, L.K.; Collins, W.E. & Rambabu, B.
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Partner: UNT Libraries Government Documents Department
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Network file-storage system

Description: The Common File System (CFS) is a file management and mass storage system for the Los Alamos National Laboratory's computer network. The CFS is organized as a hierarchical storage system: active files are stored on fast-access storage devices, larger, less active files are stored on slower, less expensive devices, and archival files are stored offline. Files are automatically moved between the various classes of storage by a file migration program that analyzes file activity, file size and stor… more
Date: January 1, 1982
Creator: Collins, W.W.; Devaney, M.J. & Willbanks, E.W.
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Partner: UNT Libraries Government Documents Department
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Initiation of a Nuclear Research Program at Fisk University in Cooperation with the Nuclear Physics Group at Vanderbilt University, August 15, 1997 - January 14, 2000

Description: Carrying a spirit of a long history of cooperation in physics education and research between Fisk University and Vanderbilt University, the Nuclear Research Program in the Department of Physics at Fisk University was proposed in 1996 in cooperation with the Nuclear Physics Group at Vanderbilt University. An initial NRP program was commissioned in 1997 with the financial support from DOE. The program offers a great opportunity for students and faculty at Fisk University to directly access experi… more
Date: October 1, 2002
Creator: Collins, W.E. & Hamilton, J.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Alliance for Computational Science Collaboration HBCU Partnership at Fisk University. Final Report 2001

Description: Computational Science plays a big role in research and development in mathematics, science, engineering and biomedical disciplines. The Alliance for Computational Science Collaboration (ACSC) has the goal of training African-American and other minority scientists in the computational science field for eventual employment with the Department of Energy (DOE). The involvements of Historically Black Colleges and Universities (HBCU) in the Alliance provide avenues for producing future DOE African-Am… more
Date: August 16, 2004
Creator: Collins, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Extension of the weak-line approximation and application to correlated-k methods

Description: Global climate models require accurate and rapid computation of the radiative transfer through the atmosphere. Correlated-k methods are often used. One of the approximations used in correlated-k models is the weakline approximation. We introduce an approximation T/sub g/ which reduces to the weak-line limit when optical depths are small, and captures the deviation from the weak-line limit as the extinction deviates from the weak-line limit. This approximation is constructed to match the first t… more
Date: March 15, 2011
Creator: Conley, A.J. & Collins, W.D.
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Partner: UNT Libraries Government Documents Department
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Scientific data storage solutions: Meeting the high-performance challenge

Description: The Los Alamos High-Performance Data System (HPDS) has been developed to meet data storage and data access requirements of Grand Challenge and National Security problems running in a high-performance computing environment. HPDS is a fourth-generation data storage system in which storage devices are directly connected to a network, data is transferred directly between client machines and storage devices, and software distributed on workstations provides system management and control capabilities… more
Date: April 1, 1994
Creator: Krantz, D.; Jones, L.; Kluegel, L.; Ramsey, C. & Collins, W.
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Partner: UNT Libraries Government Documents Department
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Quantitative X-ray microanalysis of submicron carbide formation in chromium (III) oxide rich scale

Description: This paper discusses the chemical microanalysis techniques adapted to identify the precipitates that form on the surface of, or within, the oxide scale of a Fe-22Cr ferritic steel during exposure to a carbon-monoxide rich environment at 750C for 800 hours. Examination of oxidized test coupons revealed the presence of a fiber like structure at the surface, shown in figure 1. Other studies have reported that these structures are carbon precipitates.
Date: August 1, 2007
Creator: Collins, W.K.; Ziomek-Moroz, M.; Holcomb, G.R.; Danielson, P. & Hunt, A.H
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Partner: UNT Libraries Government Documents Department
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SEM evaluation of advanced refractory failures in slagging gasifiers

Description: The SEM is an invaluable tool in the evaluation of advanced refractories and their failure. A reaction vessel?s refractory liner, at minimum, must protect the reaction vessel from elevated temperatures, corrosive slag and thermal cycling. To understand the failure mechanisms ARC staff had first to determine how an advanced chrome rich refractory was attacked by various components that make up a slag. Refractory cups were made from the refractory of interest and various compounds that can be fou… more
Date: August 1, 2005
Creator: Collins, W.Keith; Dahlin, Cheryl L.; Bennett, James P.; Kwong, Kyei-Sing & Rawers, James C.
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Partner: UNT Libraries Government Documents Department
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Mineral processing techniques for recycling investment casting shell

Description: The Albany Research Center of the U.S. Department of Energy used materials characterization and minerals beneficiation methods to separate and beneficially modify spent investment-mold components to identify recycling opportunities and minimize environmentally sensitive wastes. The physical and chemical characteristics of the shell materials were determined and used to guide bench-scale research to separate reusable components by mineral-beneficiation techniques. Successfully concentrated shell… more
Date: January 1, 2002
Creator: Dahlin, Cheryl L.; Nilsen, David N.; Dahlin, David C.; Hunt, Alton H. & Collins, W. Keith
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Partner: UNT Libraries Government Documents Department
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Response of precipitation extremes to idealized global warming in an aqua-planet climate model: Towards robust projection across different horizontal resolutions

Description: Current climate models produce quite heterogeneous projections for the responses of precipitation extremes to future climate change. To help understand the range of projections from multimodel ensembles, a series of idealized 'aquaplanet' Atmospheric General Circulation Model (AGCM) runs have been performed with the Community Atmosphere Model CAM3. These runs have been analysed to identify the effects of horizontal resolution on precipitation extreme projections under two simple global warming … more
Date: April 15, 2011
Creator: Li, F.; Collins, W.D.; Wehner, M.F.; Williamson, D.L. & Olson, J.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Carbon dioxide sequestration by direct mineral carbonation: process mineralogy of feed and products

Description: Direct mineral carbonation has been investigated as a process to convert gaseous CO2 into a geologically stable final form. The process utilizes a slurry of water, with bicarbonate and salt additions, mixed with a mineral reactant, such as olivine (Mg2SiO4) or serpentine [Mg3Si2O5(OH)4]. Carbon dioxide is dissolved into this slurry, resulting in dissolution of the mineral and precipitation of magnesium carbonate (MgCO3). Optimum results have been achieved using heat pretreated serpentine feed m… more
Date: January 1, 2001
Creator: O'Connor, William K.; Dahlin, David C.; Rush, G.E.; Dahlin, Cheryl L. & Collins, W. Keith
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Partner: UNT Libraries Government Documents Department
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Radiative and Dynamical Feedbacks Over the Equatorial Cold-Tongue: Results from Seven Atmospheric GCMs

Description: The equatorial Pacific is a region with strong negative feedbacks. Yet coupled GCMs have exhibited a propensity to develop a significant SST bias in that region, suggesting an unrealistic sensitivity in the coupled models to small energy flux errors that inevitably occur in the individual model components. Could this 'hypersensitivity' exhibited in a coupled model be due to an underestimate of the strength of the negative feedbacks in this region? With this suspicion, the feedbacks in the equat… more
Date: January 4, 2005
Creator: Sun, D.; Zhang, T.; Covey, C.; Klein, S.; Collins, W.; Kiehl, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Impact of horizontal resolution on simulation of precipitation extremes in an aqua-planet version of the Community Atmosphere Model (CAM)

Description: One key question regarding current climate models is whether the projection of climate extremes converges to a realistic representation as the spatial and temporal resolutions of the model are increased. Ideally the model extreme statistics should approach a fixed distribution once the resolutions are commensurate with the characteristic length and time scales of the processes governing the formation of the extreme phenomena of interest. In this study, a series of AGCM runs with idealized 'aqua… more
Date: March 1, 2011
Creator: Li, F.; Collins, W.D.; Wehner, M.F.; Williamson, D.L.; Olson, J.G. & Algieri, C.
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Partner: UNT Libraries Government Documents Department
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ARESE (ARM Enhanced Shortwave Experiment) Science Plan [Atmospheric Radiation Program]

Description: Several recent studies have indicated that cloudy atmospheres may absorb significantly more solar radiation than currently predicted by models. The magnitude of this excess atmospheric absorption, is about 50% more than currently predicted and would have major impact on our understanding of atmospheric heating. Incorporation of this excess heating into existing general circulation models also appears to ameliorate some significant shortcomings of these models, most notably a tendency to overpre… more
Date: September 27, 1995
Creator: Valero, F. P. J.; Schwartz, S. E.; Cess, R. D.; Ramanathan, V.; Collins, W. D.; Minnis, P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Performance of Zinc Anodes for Cathodic Protection of Reinforced Concrete Bridges

Description: Operation of thermal spray zinc (Zn) anodes for cathodic protection (CP) of reinforced concrete structures was investigated in laboratory and field studies conducted by the Albany Research Center (ARC) in collaboration with the Oregon Department of Transportation. The purposes of the research presented in this report were: evaluate the need for preheating concrete to improve the adhesion of the anode; estimate the service life of thermal spray Zn CP anodes; determine the optimum thickness for Z… more
Date: March 1, 2002
Creator: Covino, Bernard S., Jr.; Cramer, Stephen D.; Bullard, Sophie J.; Holcomb, Gordon R.; Russell, James H.; Collins, W. Keith et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Humectants To Augment Current From Metallized Zinc Cathodic Protection Systems on Concrete

Description: Cathodic protection (CP) systems using thermal-sprayed zinc anodes are employed to mitigate the corrosion process in reinforced concrete structures. However, the performance of the anodes is improved by moisture at the anode-concrete interface. Research was conducted to investigate the effect of hydrophilic chemical additives, humectants, on the electrical performance and service life of zinc anodes. Lithium bromide and lithium nitrate were identified as feasible humectants with lithium bromide… more
Date: December 2002
Creator: Holcomb, Gordon R.; Covino, Bernard S., Jr.; Cramer, Stephen D.; Russell, James H.; Bullard, Sophie J.; Collins, W. Keith et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Community Climate System Model: CCSM3

Description: A new version of the Community Climate System Model (CCSM) has been developed and released to the climate community. CCSM3 is a coupled climate model with components representing the atmosphere, ocean, sea ice, and land surface connected by a flux coupler. CCSM3 is designed to produce realistic simulations over a wide range of spatial resolutions, enabling inexpensive simulations lasting several millennia or detailed studies of continental-scale climate change. This paper will show results from… more
Date: December 27, 2004
Creator: Collins, W. D.; Blackmon, M.; Bitz, C.; Bonan, G.; Bretherton, C. S.; Carton, J. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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