953 Matching Results

Search Results

Results: 1 - 24 next
open access

Technology and Governance in the 1990s

Description: This report presents the papers presented at the OTA 20th Anniversary Forum on Technology and Governance in the 1990s. The report discusses five papers presented that day.
Date: April 1993
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Genetic Variation in DNA of Coho Salmon from the Lower Columbia River : Final Report 1993.

Description: The goal of this project was to develop techniques to provide the information needed to determine if Lower Columbia River coho salmon represent a 'species' under the Endangered Species Act. Our report features two new nuclear DNA approaches to the improved detection of genetic variation: (1) Studies of DNA-level genetic variation for two nuclear growth hormone genes; (2) Use of arbitrary DNA primers (randomly amplified polymorphic DNA, or 'RAPD' primers) to detect variation at large numbers of … more
Date: April 1, 1993
Creator: Fobes, Stephen; Knudsen, Kathy & Allendorf, Fred
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Umatilla River Basin Anadromous Fish Habitat Enhancement Project : 1993 Annual Report.

Description: The Umatilla Basin Anadromous Fish Habitat Enhancement Project is funded under the Northwest Power Planning Council's Columbia River Basin Fish and Wildlife Program Measure 704 (d) (1) 34.02 and targets the improvement of water quality and restoration of riparian areas, holding, spawning and rearing habitats of steelhead, spring and fall chinook and coho salmon. The project focused on implementing instream and riparian habitat improvements on private lands on the Umatilla Indian Reservation (he… more
Date: April 1, 1993
Creator: Shaw, R. Todd
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Robotic weld overlay coatings for erosion control

Description: Twelve weld overlay hardfacing alloys have been selected for preliminary erosion testing based on a literature review These alloys have been separated into three major groups: (1) Cobalt containing alloys, (2) Nickel-base alloys, (3) Iron base alloys. These alloys are being applied to carbon steel substrates and will undergo preliminary erosion testing to identify candidates weld overlay alloys for erosion control in CFB boilers. The candidate alloys selected from the preliminary erosion tests … more
Date: April 18, 1993
Creator: Levin, B. F.; Dupont, J. N. & Marder, A. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reorientation of misfit dislocations during annealing in InGaAs/GaAs(001) interfaces

Description: Transmission electron microscopy is applied to investigate the effect of postannealing on misfit dislocations in an In[sup 0.2]Ga[sup 0.8]As/GaAs(001) heterostructure. An orthogonal array of 60[degree] dislocations along [110] and [110] directions was observed in the interfaces of the samples grown by MBE at 520C. When the as-grown samples were annealed at temperatures ranging from 600 to 800C, the 60[degree] dislocations were gradually reoriented by dislocation reactions occurring at the 90[de… more
Date: April 1, 1993
Creator: Chen, Y.; Liliental-Weber, Z.; Washburn, J. (Lawrence Berkeley Lab., CA (United States)); Klem, J.F. & Tsao, J.Y. (Sandia National Labs., Albuquerque, NM (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tests of non-local interferences in kaon physics at asymmetric [phi]-factories

Description: Tests of non-local interference effects in the two-kaon system are proposed. The first kind of tests consists of measuring the amount of destructive interference between K[sub S] [yields] K[sub L] regeneration processes of two distant kaons. The second kind deals with constructive interference. These tests could be performed at an asymmetric [phi]-factory. Estimates are given of the number of events predicted by orthodox quantum mechanics and kaon regeneration theory in various suitable experim… more
Date: April 16, 1993
Creator: Eberhard, P.H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

IGR NO[sub x]/SO[sub x] control technology

Description: The technical work during this reporting term has principally involved the continued development, optimization and improvement of freezing drying techniques for solid ceramic oxide electrolyte powder preparation, preliminary optimization of the calcining of the ceramic electrolyte freeze dried powders to allow for optimum processing to the IGR composite, and determining (initial) electrochemical properties of the stabilized ceramic solid electrolyte at a variety of temperatures in air.
Date: April 25, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electricity savings from residential appliance standards in Sweden

Description: This paper discusses the energy savings that could be obtained in Sweden by instituting specific standards for five appliances: Refrigerators, freezers, dishwashers, clothes washers, and clothes dryers. At the present time, Sweden has no minimum energy efficiency standards for residential appliances. This paper discusses the energy savings that could be obtained by instituting specific standards for five product types (refrigerators, freezers, dishwashers, clothes washers, and dryers) starting … more
Date: April 1, 1993
Creator: Turiel, I. (Lawrence Berkeley Lab., CA (United States)) & Lebot, B. (Agence Francaise pour la Maitrise de l'Energie, 75 - Paris (France))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Construction of the Courant-Snyder invariants for the non-linear equations of motion and criterion for the long-term stability of the beam in a storage ring

Description: The Courant-Snyder invariants become Lyapunov functions when the [beta]-functions admit non-zero lower, and finite upper bounds. The long-term stability of motion then follows. This alternative criterion for the long-term stability of motion can be generalized to the nonlinear case. A single particle subjected to an arbitrary static magnetic field is considered in some detail, as an example.
Date: April 26, 1993
Creator: Garczynski, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear Medicine Program progress report for quarter ending March 31, 1993

Description: We have exploring the possibility of measuring urinary radioactivity as an index of pancreatic lipase activity after oral administration of a new triglyceride containing a radioactive iodine-1 25-labeled fatty acid moiety. The new agent, 1,2-dipalmitoyl-3[15-(p-iodophenyl)pentandecan-l-oyl]-racglycerol (1,2-Pal-3-IPPA), was prepared by the thallation-iodide displacement method. Following oral gavage of the radioiodinated triglyceride to rats, about 30% of the administered activity was excreted … more
Date: April 1, 1993
Creator: Knapp, F. F. Jr.; Ambrose, K. R.; Beets, A. L.; Callahan, A. P.; McPherson, D. W.; Mirzadeh, S. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Savings from energy efficient windows: Current and future savings from new fenestration technologies in the residential market

Description: Heating and cooling energy lost through windows in the residential sector (estimated at two-thirds of the energy lost through windows in all sectors) currently accounts for 3 percent (or 2.8 quads) of total US energy use, costing over $26 billion annually in energy bills. Installation of energy-efficient windows is acting to reduce the amount of energy lost per unit window area. Installation of more energy efficient windows since 1970 has resulted in an annual savings of approximately 0.6 quads… more
Date: April 1, 1993
Creator: Frost, K.; Arasteh, D. & Eto, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quenching and annealing effects on the specific heat of YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]

Description: Effect of heat treatments and quenching with no change in oxygen content was studied for a polycrystalline sample of YBCO. Quenching the sample changes the specific heat and resistivity, showing that nonsuperconducting regions, some of which are not associated with Cu[sup 2+] moments, can be created in YBCO by heat treatment alone.
Date: April 1, 1993
Creator: Emerson, J. P.; Fisher, R. A.; Wright, D. A.; Phillips, N. E. (Lawrence Berkeley Lab., CA (United States)); Gordon, J. E. (Lawrence Berkeley Lab., CA (United States) Amherst Coll., MA (United States). Dept. of Physics) & McCarron III, E. M. (Du Pont de Nemours (E.I.) and Co., Wilmington, DE (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Inductive effects during second harmonic current drive experiments on T-10

Description: Current drive during second harmonic, electron cyclotron heating experiments performed on the T-10 tokamak have been simulated with the ONETWO transport code to determine the effects of induction on the time evolution of the loop voltage and current density profile. Ray tracing shows the well focused rf power can generate centrally peaked current densities which exceed the Ohmic current densities by a factor of five, causing very peaked plasma current profiles which will be unable to sawteeth. … more
Date: April 1, 1993
Creator: Forest, C.B.; Harvey, R.W.; Lohr, J.; Luce, T.C.; Linliu, Y.R. (General Atomics, San Diego, CA (United States)); Esipchuk, Y. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

SLAC measurement of the neutron spin structure function

Description: A measurement of the nucleon spin asymmetries from deep inelastic scattering of polarized electrons by polarized [sup 3]He has been performed. The neutron spin structure function g[sub 1][sup n] is extracted and used to test the Bjorken sum rule. The neutron integral assuming a simple Regge theory extrapolation at low x is [integral][sub 0][sup 1]g[sub 1][sup n](x)dx = [minus]0.022 [plus minus] 0.011. Combined with the EMC proton results, the Bjorken sum rule predicts a neutron integral of [int… more
Date: April 1, 1993
Creator: Hughes, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Land application uses for dry FGD by-products

Description: The 1990 amendments to the Clean Air Act have spurred the development of flue gas desulfurization (FGD) processes, several of which produce a dry, solid by-product material consisting of excess sorbent, reaction products containing sulfates and sulfites, and coal fly ash. Presently FGD by-product materials are treated as solid wastes and must be landfilled. However, landfill sites are becoming more scarce and tipping fees are constantly increasing. It is, therefore, highly desirable to find ben… more
Date: April 1, 1993
Creator: Bigham, J.; Dick, W.; Forster, L.; Hitzhusen, F.; McCoy, E.; Stehouwer, R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Genetic algorithms for DNA sequence assembly

Description: This paper describes a genetic algorithm application to the DNA fragment assembly problems. The genetic algorithm uses a random key representation for representing the orderings of fragments. Two different fitness functions, both based on pairwise overlap strengths between fragments, were tested. The paper concludes that the genetic algorithm is a promising method for fragment assembly problems, achieving usable solutions quickly, but that the current fitness functions are flawed and that other… more
Date: April 13, 1993
Creator: Parsons, R.; Burks, C. (Los Alamos National Lab., NM (United States)) & Forrest, S. (New Mexico Univ., Albuquerque, NM (United States). Dept. of Computer Science)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Secondary oil recovery from selected Carter sandstone oilfields, Black Warrior Basin, Alabama

Description: The objectives of this secondary oil recovery project involving the Carter sandstone in northwest Alabama are: (1) To increase the ultimate economic recovery of oil from the Carter reservoirs, thereby increasing domestic reserves and lessening US dependence on foreign oil; (2) To extensively model, test, and monitor the reservoirs so their management is optimized; and (3) To assimilate and transfer the information and results gathered to other US oil companies to encourage them to attempt simil… more
Date: April 15, 1993
Creator: Anderson, J.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Spectrum Analysis in Beam Diagnostics

Description: In this article, we discuss fundamentals of the spectrum analysis in beam diagnostics, where several important particle motions in a circular accelerator are considered. The properties of the Fourier transform are presented. Then the coasting and the bunched beam motion in both longitudinal and transverse are studied. The discussions are separated for the signal particle, multiple particle, and the Schottky noise cases. To demonstrate the interesting properties of the beam motion spectrum, time… more
Date: April 23, 1993
Creator: Zhang, S. Y. & Weng, W. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of air toxics from a laboratory coal-fired combustor and utility scale power plants

Description: Laboratory combustor studies were conducted at Battelle in the fall of 1992 to evaluate sampling methods and analysis techniques for air toxics generated by buming pulverized coal. These experiments were described in the fifth quarterly progress report. In this report results from additional analyses of samples are reported. Results are shown in Tables 1--8 for analysis of nitro-polycyclic aromatic hydrocarbons (nitro-PAH), oxygenated PAH (oxy-PAH), hydroxy-nitro-aromatic compounds (OH-NO2-AR/P… more
Date: April 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis of new high performance lubricants and solid lubricants

Description: Synthesis and testing was begun on a number of new classes of lubricants: perfluoropolyethers (branching effects), perfluoromethylene oxide ethers, chlorine-substituted fluorocarbon polyethers, fluorine-containing branched ether lubricants, glycerine- based perfluoropolyesters, perfluoro epoxy ether chains, etc.
Date: April 1, 1993
Creator: Lagow, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Coal plasticity at high heating rates and temperatures

Description: The results of the multiple independent parallel reaction (MIPR) kinetics model are reported and discussed. The MIPR model's results agree well with the data. The effects of holding temperature, heating rate, and coal type on plasticity are displayed by the model. However, the model does not address the secondary reactions forming higher molecular weight liquid hypothesized to be responsible for the initial rise in viscosity during solidification. The average standard error of estimates for the… more
Date: April 1, 1993
Creator: Gerjarusak, S.; Peters, W.A. & Howard, J.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

GEM muon tracking R and D

Description: The suitability of open-profile CSCs for the GEM muon system was evaluated by constructing a small (0.5 m [times] 1.0 m) prototype and testing it with cosmic ray muons. The measured spatial resolution surpassed the GEM requirement of 75 [mu]m. The test results were compared with Monte Carlo simulations; good agreement was found. Studies of the timing properties of the prototype have been started.
Date: April 1, 1993
Creator: Lau, K.; Mayes, B.; Pyrlik, J. & Weinstein, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of fusion plasmas

Description: Work on ICRF interaction with the edge plasma is reported. ICRF generated convective cells have been established as an important mechanism for influencing edge transport and interaction with the H-mode, and for controlling profiles in the tokamak scrape-off-layer. Power dissipation by rf sheaths has been shown to be significant for some misaligned ICRF and IIBW antenna systems. Near-field antenna sheath work has been extended to the far-field case, important for experiments with low single pass… more
Date: April 27, 1993
Creator: Aamodt, R. E.; Catto, P. J.; D'Ippolito, D. A.; Myra, J. R. & Russell, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental particle physics at the University of Pittsburgh. [Dept. of Physics and Astronomy]

Description: During the past year on Task A, the HELIOS work drew to a close with first results from the electron-muon pair studies (no anomalous sources are seen, and the final results and uncertainties are being set). First data from CMD2 will allow improvement of some phi branching ratios, including some improved limits on forbidden decays. The engineering run for E865 is scheduled for June and July of 1993. The principal efforts of Task B, the Fermilab program, have been the completion of the analysis o… more
Date: April 1, 1993
Creator: Cleland, W. E.; Engels Jr., E.; Humanic, T. J.; Perera, U.; Shepard, P. F. & Thompson, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen