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Coal production 1989

Description: Coal Production 1989 provides comprehensive information about US coal production, the number of mines, prices, productivity, employment, reserves, and stocks to a wide audience including Congress, federal and state agencies, the coal industry, and the general public. 7 figs., 43 tabs.
Date: November 29, 1990
Partner: UNT Libraries Government Documents Department
open access

Corrosion fatigue of iron-chromium-nickel alloys: Fracture mechanics and chemistry

Description: Peak bare-surface current densities based on the scratched electrode test are seriously in error and repasivation rates grossly overestimated. Influences of potential and pH on reactions of bare surfaces are better understood. Correlation between charge transfer and corrosion fatigue crack growth response was established for Fe18Cr12Ni alloy in deaerated 0.6N NaCl at RT. Strong correlation was established between morphology of corrosion fatigue fracture surfaces and cracking in hydrogen charged… more
Date: November 29, 1990
Creator: Wei, R.P.
Partner: UNT Libraries Government Documents Department
open access

Corrosion fatigue of iron-chromium-nickel alloys: Fracture mechanics and chemistry. Progress report, 1 January 1990--30 November 1990

Description: Peak bare-surface current densities based on the scratched electrode test are seriously in error and repasivation rates grossly overestimated. Influences of potential and pH on reactions of bare surfaces are better understood. Correlation between charge transfer and corrosion fatigue crack growth response was established for Fe18Cr12Ni alloy in deaerated 0.6N NaCl at RT. Strong correlation was established between morphology of corrosion fatigue fracture surfaces and cracking in hydrogen charged… more
Date: November 29, 1990
Creator: Wei, R. P.
Partner: UNT Libraries Government Documents Department
open access

D0 Silicon Upgrade: Calorimeter Installation Bridge Non-Destructive Test Result

Description: After the central calorimeter was installed on the center beam a cracked weld was found on the bridge. The weld was a partial penetration between the top rail plate and the T-1 steel nose section. The crack is fully across the width of the rail plate and the rail is depressed in a concave shape. That is, the depression is deeper in the center and feathers out to zero at the end of the rail. Upon close inspection it was obvious that there was no penetration of weld metal into the T-1 material. T… more
Date: October 29, 1990
Creator: Stredde, H. J.
Partner: UNT Libraries Government Documents Department
open access

Deactivation by Carbon of Iron Catalysts for Indirect Liquefaction

Description: This report describes recent progress in a fundamental, three-year investigation of carbon formation and its effects on the activity and selectivity of promoted iron catalysts for synthesis, the objectives of which are: determine rates and mechanisms of carbon deactivation of unsupported Fe and Fe/K catalysts during CO hydrogenation over a range of CO concentrations, CO:H{sub 2} ratios, and temperatures; model the rates of deactivation of the same catalysts in fixed-bed reactors. During the fou… more
Date: October 29, 1990
Creator: Bartholomew, C. H.
Partner: UNT Libraries Government Documents Department
open access

Development of improved iron Fischer-Tropsch catalysts

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: October 29, 1990
Creator: Bukur, D.B.
Partner: UNT Libraries Government Documents Department
open access

Development of improved iron Fischer-Tropsch catalysts. Quarterly technical progress report, 1 July 1990--30 September 1990

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: October 29, 1990
Creator: Bukur, D. B.
Partner: UNT Libraries Government Documents Department
open access

Drilling operations at the Nevada Test Site

Description: The Nevada Operations Office (NV) is responsible for supporting the nuclear test programs of the Los Alamos and Lawrence Livermore National Laboratories. This support includes the drilling of test holes for nuclear device testing a the Nevada Test Site (NTS). The purpose of this audit was to assess the effectiveness of the Department of Energy's management of test hole inventories at the NTS. Our audit disclosed that NV accumulated a large inventory of unused test holes and approved drilling ad… more
Date: May 29, 1990
Partner: UNT Libraries Government Documents Department
open access

Effects of dispersion and support on adsorption, catalytic and electronic properties of cobalt/alumina Co hydrogenation catalysts

Description: An investigation of the effects of surface structure, dispersion, and support on the adsorption, catalytic, and electronic properties of cobalt/alumina is described, the objectives of which were to determine (1) the effects of surface structure and metal dispersion on the adsorption and catalytic properties of cobalt and (2) the effects of direct electronic interactions between metal clusters and support, on the adsorption, catalytic and electronic properties of cobalt supported on alumina. Eff… more
Date: September 29, 1990
Creator: Bartholomew, Calvin H.
Partner: UNT Libraries Government Documents Department
open access

Effects of dispersion and support on adsorption, catalytic and electronic properties of cobalt/alumina Co hydrogenation catalysts. Final progress report, August 1, 1987--July 31, 1990

Description: An investigation of the effects of surface structure, dispersion, and support on the adsorption, catalytic, and electronic properties of cobalt/alumina is described, the objectives of which were to determine (1) the effects of surface structure and metal dispersion on the adsorption and catalytic properties of cobalt and (2) the effects of direct electronic interactions between metal clusters and support, on the adsorption, catalytic and electronic properties of cobalt supported on alumina. Eff… more
Date: September 29, 1990
Creator: Bartholomew, C. H.
Partner: UNT Libraries Government Documents Department
open access

Electric Power Monthly, August 1990. [Glossary included]

Description: The Electric Power Monthly (EPM) presents monthly summaries of electric utility statistics at the national, Census division, and State level. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data includes generation by energy source (coal, oil, gas, hydroelectric, and nuclear); generation by region; consumption of fossil fuels for power generation; sales of… more
Date: November 29, 1990
Partner: UNT Libraries Government Documents Department
open access

Geophysical and transport properties of reservoir rocks. Summary annual report

Description: Definition of petrophysical properties, such as porosity, permeability and fluid saturation, on the scale of meters, is the key to planning and control of successful Enhanced Oil Recovery techniques for domestic reservoirs. Macroscopic transport properties in reservoir rocks depend critically upon processes at the pore level involving interactions between the pore topology and the physical and chemical properties of the rock minerals and interstitial fluids. Similar interactions at the pore lev… more
Date: April 29, 1990
Creator: Cook, N. G. W.
Partner: UNT Libraries Government Documents Department
open access

International oil and gas exploration and development activities

Description: This report is part of an ongoing series of quarterly publications that monitors discoveries of oil and natural gas in foreign countries and provides an analysis of the reserve additions that result. The report is prepared by the Energy Information Administration (EIA) of the US Department of Energy (DOE) under the Foreign Energy Supply Assessment Program (FESAP). It presents a summary of discoveries and reserve additions that result from recent international exploration and development activit… more
Date: October 29, 1990
Partner: UNT Libraries Government Documents Department
open access

Monthly energy review, July 1990

Description: US total energy consumption in July 1990 was 6.7 quadrillion Btu Petroleum products accounted for 42 percent of the energy consumed in July 1990, while coal accounted for 26 percent and natural gas accounted for 19 percent. Residential and commercial sector consumption was 2.3 quadrillion Btu in July 1990, up 2 percent from the July 1989 level. The sector accounted for 35 percent of July 1990 total consumption, about the same share as in July 1989. Industrial sector consumption was 2.4 quadrill… more
Date: October 29, 1990
Partner: UNT Libraries Government Documents Department
open access

Note on Sufficient Symmetry Conditions for Isotropy of the Elastic Moduli Tensor

Description: Group theoretical methods are used to obtain the form of the elastic moduli matrices and the number of independent parameters for various symmetries. Particular attention is given to symmetry groups for which 3D and 2D isotropy is found for the stress-strain tensor relation. The number of independent parameters is given by the number of times the fully symmetric representation is contained in the direct product of the irreducible representations for two symmetrical second rank tensors. The basi… more
Date: August 29, 1990
Creator: Dresselhaus, M.S. & Dresselhaus, G. (Massachusetts Inst. of Tech., Cambridge, MA (USA))
Partner: UNT Libraries Government Documents Department
open access

Pulsed laser kinetic studies of liquids under high pressure

Description: A high pressure apparatus has been constructed for measuring rates of reactions in liquids under pressures ranging from 1 atm to 2000 atm. This apparatus is being used to test the effect of ligand bulk on the rate of a thermal ring closure reaction. Microphonic photoacoustic signals obtained by illuminating solid samples with synchrotron soft x-rays and with visible laser beams have been successfully correlated with a theory for photoacoustic signal enhancement by volatile liquids. The concentr… more
Date: November 29, 1990
Creator: Eyring, E.M.
Partner: UNT Libraries Government Documents Department
open access

(Radioactive waste incineration technology development)

Description: At the request of the International Atomic Energy Agency (IAEA), technical assistance was provided to the Korea Atomic Energy Research Institute (KAERI) in the field of radwaste incineration and related off-gas treatment operations. The traveler provided the requested technical consolations and, in the process, obtained an understanding of the Republic of Korea's plans for the management of the the wastes from the country's nuclear power plants and research facilities. The government of the Rep… more
Date: November 29, 1990
Creator: Singh, S. P. N.
Partner: UNT Libraries Government Documents Department
open access

Reduction of multielement mass spectra

Description: Even though the spectra obtained by inductively coupled plasma source spectrometry (ICP-MS) are relatively simple, their interpretation can be complicated by the presence of molecular and isobaric interferants. To the extent that isotopic abundances are known and constant, one can treat observed spectra as sums of known components. A linear decomposition approach for determining the concentrations of the components in a spectrum and correctly propagating uncertainties is presented. This techniq… more
Date: June 29, 1990
Creator: Russ, G. P., III; Caffee, M.W.; Hudson, G.B. & Storch, N.A.
Partner: UNT Libraries Government Documents Department
open access

SIMON Host Computer System requirements and recommendations

Description: Development Service Order {number sign}90025 requested recommendations for computer hardware, operating systems, and software development utilities based on current and future SIMON software requirements. Since SIMON's main objective is to be dispatched on missions by an operator with little computer experience, user friendly'' hardware and software interfaces are required. Other design criteria include: a fluid software development environment, and hardware and operating systems with minimal m… more
Date: November 29, 1990
Creator: Harpring, L.J.
Partner: UNT Libraries Government Documents Department
open access

SIMON Host Computer System requirements and recommendations

Description: Development Service Order {number_sign}90025 requested recommendations for computer hardware, operating systems, and software development utilities based on current and future SIMON software requirements. Since SIMON`s main objective is to be dispatched on missions by an operator with little computer experience, ``user friendly`` hardware and software interfaces are required. Other design criteria include: a fluid software development environment, and hardware and operating systems with minimal… more
Date: November 29, 1990
Creator: Harpring, L. J.
Partner: UNT Libraries Government Documents Department
open access

Theory and phenomenology of strong and weak interaction high energy physics

Description: This paper deals with research being conducted at the University of Arizona in the theory of strong and weak interactions. Topics in Quantum chromodynamics, quantum electrodynamics, symmetry principle, hadronic structure of the photon and other are discussed. (LSP)
Date: August 29, 1990
Creator: Carruthers, P. & Thews, R. L.
Partner: UNT Libraries Government Documents Department
open access

Winter Fuels Report: Week Ending November 23, 1990

Description: The Winter Fuels Report is intended to provide concise, timely information to the industry, the press, policymakers, consumers, analysts, and state and local governments on the following topics: distillate fuel oil net production, imports and stocks for all PADD's and product supplied on a US level; propane net product supplied on a US level; propane net production, imports and stocks for Petroleum Administration for Defense Districts (PADD) I, II, and III; natural gas supply and disposition an… more
Date: November 29, 1990
Partner: UNT Libraries Government Documents Department
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