12 Matching Results

Search Results

Results: 1 - 12
open access

Development of a building wake/stack height numerical modeling capability

Description: We are developing state-of-the-art numerical tools which can be used to provide reliable estimates of potential emissions at various LLNL sites. In particular we have focused our efforts in generating models which can simulate the wind flow and dispersion of airborne pollutants around surface-mounted structures such as buildings or building complexes. To achieve this goal, we have adopted two different but complementary approaches in the modeling of this complex problem. The first approach empl… more
Date: September 6, 1991
Creator: Lee, R.L. & McCallen, R.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ablation gas dynamics of low-Z materials illuminated by soft x-rays

Description: Though many of our results will have much greater generality, the main purpose of this paper is to provide a simple, accurate, physical theory of what happens when a Planckian spectrum of soft x-rays is incident on one side of the slab of initially cold, dense material, of small nuclear charge Z. Our approach will be to consider in some detail the idealized situation. A semi-infinite (x {le} 0) slab of initially cold (T < 300 K), dense ({rho} {approximately} 1 {minus} 10 g/cc), low-Z (Z < 5) ma… more
Date: September 6, 1991
Creator: Hatchett, S.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Technical and QA plan: Boiling behavior during flow instability

Description: The coolant flow in a nuclear reactor core under normal operating conditions is kept as a subcooled liquid. This coolant is evenly distributed throughout the multiple flow channels with a uniform pressure profile across each coolant flow channel. If the coolant flow is reduced, the flow through individual channels will also decrease. A decrease in coolant flow will result in higher coolant temperatures if the heat flux is not reduced. When flow is significantly decreased, localized boiling may … more
Date: September 6, 1991
Creator: Coutts, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ligand intermediates in metal-catalyzed reactions

Description: This report consists of six sections, which cover pi/sigma equilibria in aldehyde and ketone complexes, abstraction of vinylic protons from alkene complexes, mechanism of rearrangement of alkylidene to alkene complexes, rearrangement of terminal acetylene to vinylidene complexes, synthesis and reactivity of lithiocarbide complexes, and new catalysts for the epimerization of secondary alcohols; carbon-hydrogen bond activation in alkoxide complexes. (WET)
Date: September 6, 1991
Creator: Gladysz, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ligand intermediates in metal-catalyzed reactions. Annual technical report, September 1, 1990--August 31, 1991

Description: This report consists of six sections, which cover pi/sigma equilibria in aldehyde and ketone complexes, abstraction of vinylic protons from alkene complexes, mechanism of rearrangement of alkylidene to alkene complexes, rearrangement of terminal acetylene to vinylidene complexes, synthesis and reactivity of lithiocarbide complexes, and new catalysts for the epimerization of secondary alcohols; carbon-hydrogen bond activation in alkoxide complexes. (WET)
Date: September 6, 1991
Creator: Gladysz, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technical and QA plan: Boiling behavior during flow instability

Description: The coolant flow in a nuclear reactor core under normal operating conditions is kept as a subcooled liquid. This coolant is evenly distributed throughout the multiple flow channels with a uniform pressure profile across each coolant flow channel. If the coolant flow is reduced, the flow through individual channels will also decrease. A decrease in coolant flow will result in higher coolant temperatures if the heat flux is not reduced. When flow is significantly decreased, localized boiling may … more
Date: September 6, 1991
Creator: Coutts, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: DART Bus]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: September 6, 1991, 6:00 p.m.
Duration: 1 minute 40 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: 106th Birthday]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: September 6, 1991, 10:00 p.m.
Duration: 55 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: DART Fight]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: September 6, 1991, 10:00 p.m.
Duration: 1 minute 51 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
Back to Top of Screen