604 Matching Results

Search Results

Results: 1 - 24 next
open access

Effect of sulfuric acid, oxygen, and hydrogen in high-temperature water on stress corrosion cracking of sensitized Type 304 stainless steel

Description: The influence of dissolved oxygen and hydrogen and dilute sulfuric acid in 289/sup 0/C water on the stress-corrosion-cracking susceptibility of lightly and moderately sensitized Type 304 stainless steel was determined in constant-extension-rate tensile (CERT) tests. The CERT parameters and the fracture surface morphologies were correlated with the concentrations of dissolved oxygen and sulfate, and the electrochemical potentials of platinum and Type 304 stainless steel electrodes in simulated b… more
Date: June 1, 1983
Creator: Ruther, W.E.; Soppet, W.K.; Ayrault, G. & Kassner, T.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Direct chlorination process for geothermal power plant off-gas - hydrogen sulfide abatement

Description: The Direct Chlorination Process removes hydrogen sulfide from geothermal off-gases by reacting hydrogen sulfide with chlorine in the gas phase. Hydrogen chloride and elemental sulfur are formed by this reaction. The Direct Chlorination Process has been successfully demonstrated by an on-site operation of a pilot plant at the 3 M We HPG-A geothermal power plant in the Puna District on the island of Hawaii. Over 99.5 percent hydrogen sulfide removal was achieved in a single reaction stage. Chlori… more
Date: June 1, 1983
Creator: Sims, A.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nonlinear bending and collapse analysis of a poked cylinder and other point-loaded cylinders

Description: This paper analyzes the geometrically nonlinear bending and collapse behavior of an elastic, simply supported cylindrical shell subjected to an inward-directed point load applied at midlength. The large displacement analysis results for this thin (R/t = 638) poked cylinder were obtained from the STAGSC-1 finite element computer program. STAGSC-1 results are also presented for two other point-loaded shell problems: a pinched cylinder (R/t = 100), and a venetian blind (R/t = 250).
Date: June 1, 1983
Creator: Sobel, L.H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

5. 8 GHz ophthalmic microwave applicator for treatment of choroidal melanoma

Description: We report on the use of a 5.8 GHz microwave applicator to treat choroidal melanoma (Greene) in rabbits. The physical requirements needed to treat these intraocular tumors are quite different from those encountered elsewhere in the body. From a trans-scleral approach the penetration needed is minimal (5 to 10 mm.). The fibrous sclera is the only structure between the heat source and the tumor. The sclera has a relatively low water content when compared to tumor. This fact in addition to the freq… more
Date: June 1983
Creator: Finger, Paul T.; Packer, Samuel; Svitra, Paul; Paglione, Robert W.; Albert, Daniel M. & Chess, Jeremy
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Characterizing W-2 SLSF experiment temperature oscillations using computer graphics. [Sodium Loop Safety Facility]

Description: The W-2 SLSF (Sodium Loop Safety Facility) experiment was an instrumented in-reactor test performed to characterize the failure response of full-length, preconditioned LMFBR prototypic fuel pins to slow transient overpower (TOP) conditions. Although the test results were expected to confirm analytical predictions of upper level failure and fuel expulsion, an axial midplane failure was experienced. Extensive post-test analyses were conducted to understand all of the unexpected behavior in the ex… more
Date: June 23, 1983
Creator: Smith, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

[Terry Tebedo - Cedar Springs]

Description: A photograph of Terry Tebedo in Dallas, Texas, standing on a ladder and placing a a yellow Razzle Dazzle Dallas poster on a telephone pole in June of 1983. Razzle Dazzle Dallas is a local event celebrating LGBT Pride month in June. An American flag is above him on the pole. On the back of the photographer, there are Kodak stamps and a handwritten note: "Terry Tebedo w/RDP poster - on Cedar Springs, June 83."
Date: June 1983
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Physics Division Annual Review: 1 April 1982-31March 1983

Description: The research program in nuclear physics in the Physics Division spans a broad range of activities and contributes to many of the major questions in the discipline. Activities may be roughly divided into three broad categories. Research with the tandem-linac in heavy-ion physics is doing well, though laboring under severe budgetary constraints, and outside use of the facility has increased substantially. Progress on the construction of the full ATLAS facility is coming along expeditiously and it… more
Date: June 1983
Creator: Gemmell, Donald S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design Guide for Calculating Fluid Damping for Circular Cylindrical Structures

Description: Fluid damping plays an important role for structures submerged in fluid, subjected to flow, or conveying fluid. This design guide presents a summary of calculational procedures and design data for fluid damping for circular cylinders vibrating in quiescent fluid, crossflow, and parallel flow.
Date: June 1983
Creator: Chen, S. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Leakage-Flow-Induced Vibration of a Tube-in-Tube Slip Joint

Description: The susceptibility of a cantilevered tube conveying water to self-excitation by leakage flow through a slip joint is assessed experimentally. The slip joint is formed by inserting a smaller, rigid tube into the free end of the cantilevered tube. Variations of the slip joint annular gaps and engagement lengths are tested, and several mechanisms for self-excitation are described.
Date: June 1983
Creator: Mulcahy, T. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Seasonal-Storage Solar-Energy Heating System for the Charlestown, Boston Navy Yard National Historic Park

Description: This Phase II study provides further analysis for a seasonal-storage solar-heating system utilizing two existing underground, concrete tanks in the National Historic Park of the Charlestown Navy Yard in Boston. The initial Phase I study was reported in ANL-82-90. The new results focus on the effect of including a heat pump in the system to extend the useful heat-storage capacity of the tanks. The analysis was performed with MINSUN Version III, a computer simulation model written particularly fo… more
Date: June 1983
Creator: Breger, Dwayne & Michaels, Allan I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Endochronic Theory of Dynamic Viscoplasticity

Description: This report summarizes the work completed on a project concerned with engineering models in dynamic plasticity. The concept of the endochronic theory of viscoplasticity and its subsequent improvement are discussed briefly. Applications and extensions of the theory to various dynamic problems are presented. In particular, the strain-rate effect in the improved endochronic theory and its application to wave propagation problems are discussed. Comparing the numerical results with other calculation… more
Date: June 1983
Creator: Lin, Hsuan-Chi
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of the safety of spent fuel transportation in urban environs

Description: The results of a program to provide an experimental data base for estimating the radiological consequences from a hypothetical sabotage attack on a light-water-reactor spent fuel shipping cask in a densely populated area are presented. The results of subscale and full-scale experiments in conjunction with an analytical modeling study are described. The experimental data were used as input to a reactor-safety consequence model to predict radiological health consequences resulting from a hypothet… more
Date: June 1, 1983
Creator: Sandoval, R. P.; Weber, J. P.; Levine, H. S.; Romig, A. D.; Johnson, J. D.; Luna, R. E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recent Studies on Second-Harmonic Generation as a Surface Probe

Description: Optical second-harmonic generation (SHG) is sensitive enough to respond to a submonolayer of surface atoms or molecules. It can therefore be used to probe surfaces or interfaces between two centrosymmetric media. The surface-specific nature of this optical method offers some advantages. We have demonstrated in recent experiments that resonant SHG can allow us to obtain spectroscopic data of submonolayers of adsorbed molecules on a surface. The signal was so strong that less than one tenth of a … more
Date: June 1, 1983
Creator: Tom, H. W. K.; Heinz, T. F.; Ye, P. & Shen, Y. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Current-drive experiments on the PLT Tokamak

Description: Lower hybrid current-drive experiments have been carried out on the PLT Tokamak. Steady currents up to 175 kA have been maintained for three seconds and 400 kA for 0.3 sec by the rf power alone. The principal current carrier appears to be a high energy (approx. 100 keV) electron tail, concentrated in the central 20 to 40 cm diameter core of the 80-cm PLT discharge. Effective current drive is observed only for anti n/sub e/ less than or equal to 8 x 10/sup 12/ cm/sup -3/. This limitation may be … more
Date: June 1, 1983
Creator: Jobes, F.; Bernabei, S.; Efthimion, P.; Hooke, W.; Hosea, J.; Mazzucato, E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-jitter, hydrogen thyratron Pockels cell driver

Description: The requirements to be met by Pockels cell drivers for incorporation into the Novette and Nova Laser systems are presented, and critical aspects of the specification examined. A high-performance pulse generator has been developed to meet these requirements using new thyratron technology from the English Electric Valve Co. Ltd. Two closely related versions have been built; a 10KV output unit with 9 nsec risetime into five parallel 50-ohm loads and a faster 5KV output driver with 3.5 nsec risetim… more
Date: June 1, 1983
Creator: Oicles, J.A. & Kitchin, H.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Confirmation of the calculated breeding ratio for CRBRP

Description: A breeding ratio of at least 1.2 was a design goal for CRBRP. The value for the initial core (using plutonium with 11% /sup 240/Pu) calculated with ENDF/B-IV data is 1.27. Engineering mock-up studies for CRBRP were made in ZPPR-11. Analysis of ZPPR-11 using ENDF/B-IV data showed consistent underprediction of K/sub eff/ by about 1.5% and overpredictions of the /sup 238/U capture to /sup 239/Pu fission ratio (C8/F9) between 5% and 8%. These results are typical for all LMFBR critical assemblies at… more
Date: June 3, 1983
Creator: Collins, P.J.; Liaw, J. & Turski, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Programmable controller with overcurrent latch for constant primary peak current in capacitor-charging FET switcher for Nova

Description: New switching power supplies were designed for the 10 mm laser amplifiers in the Nova Master Oscillator Room. The flashlamp supply must be repratable. Therefore, we designed a constant current, linearly charging power supply. Since it is a capacitor, the load varies throughout the charge cycle. At first the load is great, and di/dt of load current is at a maximum. As the capacitor charges the initial conditions for each cycle change, the power supply in effect sees a smaller capacitance, and di… more
Date: June 6, 1983
Creator: Mihalka, A. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Neutral-beam-injection systems for reactors

Description: Increasing effort is being put into engineering designs of reactors and reactor-like magnetic confinement experiments. A central question concerns the methods of heating, fueling, and maintaining the plasmas, functions that primarily are now performed by neutral beams. Planning in the USA does not include the use of neutral beams on tokamaks in the 1990's and beyond. Tandem mirrors, however, will use energetic beams (sloshing ion beams) in the end plugs to produce electrostatic potentials that … more
Date: June 1, 1983
Creator: Pyle, R.V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Techniques for measuring the vertical hydraulic conductivity of flood basalts at the Basalt Waste Isolation Project site

Description: A regional model that can predict groundwater movement through the reference repository location and surrounding area is essential to assessing the site suitability for a nuclear waste repository. During the last two decades, several models have been developed to handle complicated flow patterns through complex geologic materials. The basic problem, however, is obtaining the data base needed to apply these models. The hydrological data needed include the spatial distribution of effective porosi… more
Date: June 1, 1983
Creator: Javandel, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Idaho National Engineering Laboratory radioecology and ecology programs. 1983 progress report

Description: Progress is reported in research on: the baseline ecology of the Idaho National Engineering Laboratory (INEL), the effects of disturbance on animal and plant communities, and the behavior of radionuclides in the environment surrounding radioactive waste sites. Separate abstracts have been prepared for individual reports. (ACR)
Date: June 1, 1983
Creator: Markham, O. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inland-transport modes for coal and coal-derived energy: an evaluation method for comparing environmental impacts

Description: This report presents a method for evaluating relative environmental impacts of coal transportation modes (e.g., unit trains, trucks). Impacts of each mode are evaluated (rated) for a number of categories of environmental effects (e.g., air pollution, water pollution). The overall environmental impact of each mode is determined for the coal origin (mine-mouth area), the coal or coal-energy product destination (demand point), and the line-haul route. These origin, destination, and en route impact… more
Date: June 1, 1983
Creator: Bertram, K.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Subthreshold K/sup -/ Production in Nucleus-Nucleus Collisions

Description: We have measured the production cross section and momentum distribution of K/sup -/ produced at 0/sup 0/ in /sup 28/Si + /sup 28/Si collisions at an energy of 2.1 GeV/nucleon. The K/sup -/ spectrum is approximately exponential. The large yield in the subthreshold production of K/sup -/ that we observe corresponds to a production rate of 1K/sup -/ per 50 collisions at impact parameters less than 1f. Productions mechanisms involving collective effects and thermal equilibration are discussed.
Date: June 1, 1983
Creator: Shor, A.; Carroll, J. & Barasch, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen