176 Matching Results

Search Results

Results: 1 - 24 next
open access

Molecular biological enhancement of coal biodesulfurization. [Rhodococcus, thiobacillus]

Description: The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: clone and characterize the genes encoding the enzymes of the 4S'' pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; transfer this pathway into a fas… more
Date: June 14, 1990
Creator: Litchfield, J. H.; Fry, I.; Wyza, R. E.; Palmer, D. T.; Zupancic, T. J. & Conkle, H. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: The primary objective of the project is to investigate the magnetic nature of the higher alcohol synthesis catalyst-Cu/Co supported on specific supports: chromia and titania with and without an alkali metal promoter, and examine the relations between catalytic and magnetic properties.
Date: September 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling of water spraying of field releases of hydrogen fluoride

Description: The effectiveness of water sprays to absorb HF releases has been recently demonstrated by extended laboratory and field tests. In this paper computer simulations are presented of the Hawk, Nevada Test Site, series of field tests, along with parametric studies of several cases which have not been studied in the field. The model used in these simulations, HFSPRAY, treats the gas-phase as an Eulerean fluid whereas the spray is described according to the Lagrangian approach by a finite number of dr… more
Date: October 14, 1990
Creator: Fthenakis, V.M. (Brookhaven National Lab., Upton, NY (United States)); Schatz, K.W. (Mobil Research and Development Corp., Princeton, NJ (United States)) & Zakkay, V. (New York Univ., NY (United States). Dept. of Applied Science)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multi-chromophoric species: Synthetic tetrads and pentads

Description: This research project involves the design, synthesis and study of the molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. Specifically, the molecules are designed to mimic the following aspects of natural photosynthetic multistep electron transfer: electron donation from a tetrapyrrole excited singlet state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with differ… more
Date: February 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Housing - March]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story by reporter about a large march involving housing issues for the homeless. This story aired at 10pm.
Date: January 14, 1990
Duration: 1 minute 49 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Location: 32.783567 -96.872630
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Homeless]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story by reporter Marty Griffin about the homeless and a Sunday religious service giving food and those fighting to raise awareness about the homeless problem. This story aired at 5pm.
Date: January 14, 1990
Duration: 1 minute 49 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Raster data transfer test using optigraphics produced data: MIL-R- 28002 Type 1 (Raster)

Description: The DoD Computer-aided Acquisition and Logistics Support (CALS) Test Network (CTN) is conducting tests of the military standard for the Automated interchange of Technical Information, MIL-STD-1840A, and its companion suite of specifications. The primary purpose of the CTN is to evaluate the effectiveness of the CALS standards for technical data interchange and to demonstrate the capability and operational suitability of these standards. This test was conducted to allow Optigraphics to demonstra… more
Date: June 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Spin observables for nucleon-nucleon elastic scattering at large momentum transfer

Description: We discuss amplitudes for elastic nucleon-nucleon scattering at high energy. The helicity-conserving amplitudes are modeled using a combination of the quark-interchange and the Landshoff mechanisms of perturbative QCD. The relative normalization of these two sets of amplitudes involves a leading order form factor'' which we determine empirically. Our theoretically motivated amplitudes provide an economical description of a large body of existing data and make nontrivial predictions for spin obs… more
Date: August 14, 1990
Creator: Ramsey, G.P. (Loyola Univ., Chicago, IL (USA). Dept. of Physics Argonne National Lab., IL (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

HYLIFE-II inertial confinement: Fusion power plant design

Description: The HYLIFE-2 inertial fusion power plant design study uses a liquid fall, in the form of jets to protect the first structural wall from neutron damage, x rays, and blast to provide a 30-y lifetime. HYLIFE-1 used liquid lithium. HYLIFE 2 avoids the fire hazard of lithium by using a molten salt composed of fluorine, lithium, and beryllium (Li{sub 2}BeF{sub 4}) called Flibe. Access for heavy-ion beams is provided. Calculations for assumed heavy-ion beam performance show a nominal gain of 70 at 5 M… more
Date: December 14, 1990
Creator: Moir, Ralph W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Applications of the operational method

Description: New equations for continuous, operational interpolation on four plates in rectangular array are derived. The equations can be applied to the interpretation of experimental data. Other topics include convergence of operational formulas and extrapolation by operational methods. 11 refs.
Date: November 14, 1990
Creator: Silver, G.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

(Characterization of lignin peroxidases from Phanerochaete)

Description: Work has continued on characterizing the kinetics of lignin peroxidases and has now expanded to include the chemistry of Mn peroxidases. Progress in these two area in addition to the authors work on the molecular biology of lignin biodegradation is briefly described below. Copies of two reprints and one preprint which have resulted from the work are attached.
Date: November 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Heavy ion beam and reactor chamber interface design

Description: The design of the heavy-ion beam and the HYLIFE-II reactor chamber interface must provide final focusing quadruple triplets, neutron shielding, fast shutters, vapor condensation and pumping, thermal insulation, and blast resistant structures. The smallest half angle encompassing all beams striking the target might be {plus minus}14{degrees} for an array of 4 {times} 4 beams or {plus minus}9{degrees} if the four corner beams are eliminated, giving a 12-beam array. The target gain drops considera… more
Date: December 14, 1990
Creator: Moir, Ralph W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Oscillating liquid flow ICF Reactor

Description: Oscillating liquid flow in a falling molten salt inertial confinement fusion reactor is predicted to rapidly clear driver beam paths of residual liquid droplets. Oscillating flow will also provide adequate neutron and x-ray protection for the reactor structure with a short (2-m) fall distance permitting an 8 Hz repetition rate. A reactor chamber configuration is presented with specific features to clear the entire heavy-ion beam path of splashed molten salt. The structural components, including… more
Date: December 14, 1990
Creator: Petzoldt, R.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LLNL Waste Minimization Program Plan

Description: This document is the February 14, 1990 version of the LLNL Waste Minimization Program Plan (WMPP). The Waste Minimization Policy field has undergone continuous changes since its formal inception in the 1984 HSWA legislation. The first LLNL WMPP, Revision A, is dated March 1985. A series of informal revision were made on approximately a semi-annual basis. This Revision 2 is the third formal issuance of the WMPP document. EPA has issued a proposed new policy statement on source reduction and recy… more
Date: February 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Raster data transfer test using GTX produced data: MIL-R-28002 Type 1 (Raster)

Description: The DoD Computer-aided Acquisition and Logistics Support (CALS) Test Network (CTN) is conducting tests of the military standard for the Automated interchange of Technical Information, MIL-STD-1840A, and its companion suite of specifications. The primary purpose of the CTN is to evaluate the effectiveness of the CALS standards for technical data interchange and to demonstrate the capability and operational suitability of these standards. This test was conducted to allow GTX to demonstrate their … more
Date: June 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Results from hadron colliders

Description: The present status of hadron collider physics is reviewed. The total cross section for {bar p} + p has been measured at 1.8 TeV: {sigma}{sub tot} = 72.1 {plus minus} 3.3 mb. New data confirm the UA2 observation of W/Z {yields} {bar q}q. Precision measurements of M{sub W} by UA2 and CDF give an average value M{sub W} = 80.13 {plus minus} 0.30 GeV/c{sup 2}. When combined with measurements of M{sub Z} from LEP and SLC this number gives sin{sup 2}{theta}{sub W} = 0.227 {plus minus} 0.006, or m{sub … more
Date: December 14, 1990
Creator: Pondrom, L.G. (Wisconsin Univ., Madison, WI (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A new approach to chiral fermions on the lattice

Description: We wish to describe a method for formulating, on the lattice, field theories that contain Dirac particles with chiral couplings to gauge fields. As is well-known, the most straight-forward lattice transcription of the continuum action for a Dirac particle leads to the doubling problem: for every particle of a given chirality in the continuum theory, there appear on the lattice, in d dimensions, 2{sup d} particles, with equal numbers of particles of left- and right-handed chirality. No-go theore… more
Date: November 14, 1990
Creator: Bodwin, G.T. (Argonne National Lab., IL (USA)) & Kovacs, E.V. (Fermi National Accelerator Lab., Batavia, IL (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nuclear shell model calculations with non-local interactions

Description: It is becoming clearer with time that non-locality of the nucleon-nucleon interaction can play a significant role in nuclear properties. In this talk we review evidence for such non-locality. Then, using a Gaussian interaction, we discuss the effect of non-locality on two body matrix elements in the nuclear shell model. Finally, we mention some applications. For example, non-locality leads to faster convergence of off-diagonal matrix elements.
Date: October 14, 1990
Creator: Moszkowski, S.A. (California Univ., Los Angeles, CA (USA). Dept. of Physics); Bloom, S.D. & Resler, D.A. (Lawrence Livermore National Lab., CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

HYLIFE-II inertial confinement fusion reactor design

Description: The HYLIFE-2 inertial fusion power plant design study uses a liquid fall, in the form of jets to protect the first structural wall from neutron damage, x rays, and blast to provide a 30-y lifetime. HYLIFE-1 used liquid lithium. HYLIFE 2 avoids the fire hazard of lithium by using a molten salt composed of fluorine, lithium, and beryllium (Li{sub 2}BeF{sub 4}) called Flibe. Access for heavy-ion beams is provided. Calculations for assumed heavy-ion beam performance show a nominal gain of 70 at 5 M… more
Date: December 14, 1990
Creator: Moir, Ralph W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Raster data transfer test using Formtek produced data: MIL-R-28002 Type 1 (Raster)

Description: The DoD Computer-aided Acquisition and Logistics Support (CALS) Test Network (CTN) is conducting tests of the military standard for the Automated interchange of Technical Information, MIL-STD-1804A, and its companion suite of specifications. The CTN is a DoD sponsored confederation of voluntary participants from industry and government, managed by the Air Force Logistics Command. The primary purpose of the CTN is to evaluate the effectiveness of the CALS standards for technical data interchange… more
Date: June 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Anistotropic yielding of rocks at high temperatures and pressures

Description: The anisotropic deformation of foliated and linealed rocks has been investigated, primarily to predict the mechanical response of rocks surrounding buried magma chambers to the stress fields generated by deep drilling. The principal application in this regard has been to evaluate, the scientific feasibility of extracting geothermal energy from buried magma chambers. Our approach has been to perform triaxial extension and compression tests at temperatures and pressures representative of the bore… more
Date: October 14, 1990
Creator: Kronenberg, A. K.; Russell, J. E. & Carter, N. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A 250-GHz CARM (Cyclotron Auto Resonance Maser) oscillator experiment driven by an induction linac

Description: A 250-GHz Cyclotron Auto Resonance Maser (CARM) oscillator has been designed and constructed and will be tested using a 1-kA, 2-MeV electron beam produced by the induction linac at the Accelerator Research Center (ARC) facility of Lawrence Livermore National Laboratory (LLNL). The oscillator circuit was made to operate in the TE{sub 11} mode at ten times cutoff using waveguide Bragg reflectors to create an external cavity Q of 8000. Theory predicts cavity fill times of less than 30 ns (pulse le… more
Date: September 14, 1990
Creator: Caplan, M.; Kulke, B.; Bubp, D.G. (Lawrence Livermore National Lab., CA (USA)); McDermott, D. & Luhmann, N. (California Univ., Los Angeles, CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen