Research progress is reported on the following topics: (1) conversion of 2, 4, 6-trichloroaniline to 2, 4, 6-trichloronitrobenzene; (2) nitration of 1, 2, 4-trichlorobenzene; (3) exploration of the route to 1, 3, 5-trichlorobenzene via aniline; and (4) direct nitration of trichloroaniline. (TFD)

This report describes the RTG degradation mechanisms which have been identified as occurring in thermoelectric power generating systems that use the alloy of silicon germanium as the thermoelectric material and that incorporate a multifoil thermal insulation system. The synergetic effects of all of the identified degradation mechanisms are determined by a computer code, DEGRA, which calculates the available generator output power as a function of generator operating time.

Collections of abstracts of papers published during the previous calendar year in the areas of high energy physics, nuclear sciences, materials science and molecular sciences are presented.

The aims of the research program are: (a) to observe the minimum threshold dose of simulated acid rain to produce visual and histological effects on plant foliage, (b) approach threshold limits of simulated sulfate acid rain that affect plant growth and reproduction, and (c) to measure chemical and meteorological parameters of incident rain. Acute leaf injury to several plant species resulted from exposure of foliage to simulated sulfate acid rain of pH level 2.3 to 2.9. Only slight injury occurred at 3.1. Scanning electron micrographs showed that injury to upper leaf surfaces occurred mostly at the base of trichomes (leaf hairs) and near stomata. An association of lesion development near vascular tissue was also noted. Histologically, lesions are characterized by an initial collapse of the epidermis with eventual lysis and collapse of more internal leaf tissues on the upper leaf surface of pinto beans which complemented detailed descriptions of visual lesion development after daily exposures to simulated rain. Initial experiments with gametophytes of Pteridium aquilinum show that reproduction of this fern species is very sensitive to solutions of pH 5.2 while vegetative development is not affected at pH levels of 2.2. Initial rain samples from the sequential sampler have been …

In July 1973, a field experiment was conducted at Rocky Flats to measure plutonium resuspension. Previously, for this experiment, airborne plutonium concentrations in respirable size ranges were reported. Concentrations were measured at three sites between the eastern security fence and eastern cattle fence. On 13 nonrespirable particle diameter ranges between 10 and 210 ..mu..m, /sup 239/Pu concentrations range from 10/sup -8/ to 10/sup -4/ ..mu..Ci/g. Airborne /sup 238/Pu concentrations as a function of particle diameter ranged from 10/sup -9/ to 10/sup -5/ ..mu..Ci/g. Both /sup 238/Pu and /sup 239/Pu were found on all particle diameter ranges. Airborne plutonium fluxes on nonrespirable particles decreased with both height and distance. The nonrespirable total /sup 239/Pu flux ranged from 1 x 10/sup -7/ to 6 x 10/sup -4/ ..mu..Ci/m/sup 2//day. Airborne /sup 238/Pu//sup 239/Pu ratios were always equal to or greater than similar ratios reported measured on the ground surface. Ground surface ratios ranged from 1.5 x 10/sup -2/ to 2.2 x 10/sup -2/. Only near the eastern security fence were airborne ratios similar to ground level ratios. At the eastern security fence, airborne /sup 238/Pu//sup 239/Pu ratios ranged from 0.2 to 0.4. These airborne ratios were one order of magnitude greater than …

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.

Monte Carlo calculations were performed to analyze an integral experiment on a liquid oxygen sample to determine the adequacy of the neutron scattering and gamma-ray production data for oxygen. The experimental results included energy- and angular-dependent NE-213 detector count rates and secondary pulse-height spectra for scattered neutrons and gamma rays. The sample was a spherical dewar of liquid oxygen pulsed with a 1- to 20-MeV neutron source. Pulse-height data were unfolded to generate secondary neutron and gamma-ray production spectra as a function of angle in broad incident neutron energy bins. Analysis of all the reported data was based on multigroup Monte Carlo calculations using the MORSE code. Results indicate that the current ENDF/B-IV neutron and gamma-ray production data for oxygen above 1 MeV appear to be in good order. The only major discrepancy uncovered was related to neutron scattering and gamma-ray production from first level inelastic scattering interactions. Calculated results for the production of 6-MeV gamma rays from the 6-MeV first inelastic level in oxygen appear to be low by around 50 percent at energies above the inelastic threshold. Likewise, calculated secondary neutron spectra for incident neutron energies above 6 MeV are uniformly low at energies corresponding to neutrons having …

A computer program was produced which would analyze a direct-contact binary fluid power plant as conceived for geothermal applications. The current cycle consists of a direct-contact boiler, binary vapor mixture turbine, parallel flow liquid-liquid preheaters, pumps, flash expander and a condenser. The program computes important design parameters which allow the user to select the optimum operating condition for a particular well. The program allows for the evaluation of cycles utilizing liquid hydrocarbons and fluorocarbons as secondary fluids. A complete description of the executive program including flow charts, program listings and variable symbol tables is contained. A sample run of the main program completes the description of its use.

This study evaluates the state of knowledge of subsidence associated with geothermal development, and provides preliminary methods to assess the potential of land subsidence for any specific geothermal site. The results of this study are presented in three volumes. Volume 1 is designed to serve as a concise reference, a handbook, for the evaluation of the potential for land subsidence from the development of geothermal resources.

A project undertaken to determine the ink characteristics affecting fired films is described. The analytical methods used were thermogravimetric analysis, pryolysis-gas chromatography, infrared spectrophotometry, mass spectrometry, atomic absorption spectrophotometry, scanning electron microscopy with energy dispersive x-ray spectroscopy, and particle size analysis using a Coulter counter.

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A comprehensive analysis format has been developed for installed radioactive gaseous effluent sampling systems. It provides the necessary questions which when accurately answered should permit a good analysis of the sampling system and provide documentation for sampler system description, mode of operation, etc. Feasibility was shown for the application of gases and particles in a ''validation package'' which will permit a good physical demonstration of sampling systems. Preformed particles with gravimetric methods for measurement appear to have certain advantages, but further study, using available equipment, should be undertaken. Selected systems would be demonstrated under simulated and actual sampling situations. Detailed procedures would be developed.

Approximate methods are derived that enable the effects of certain kinds of void regions in nuclear reactors to be adequately modeled at greatly reduced costs. This reduction in costs is accomplished by: (a) specifying void boundary conditions so as to reduce the problem to a simple albedo type; (b) reducing the number of spatial dimensions; and (c) using diffusion theory, where possible, rather than transport theory or Monte Carlo methods.

Weekly newspaper from Aransas Pass, Texas that includes local, state, and national news along with advertising.

Maps of the conterminous United States showing the rivers with sufficient flow to be of interest as potential sites for nuclear energy centers are presented. These maps show the rivers with (1) mean annual flows greater than 3000 cfs, with the flow rates identified for ranges of 3000 to 6000, 6000 to 12,000, 12,000 to 24,000, and greater than 24,000 cfs; (2) monthly, 20-year low flows greater than 1500 cfs, with the flow rates identified for ranges of 1500 to 3000, 3000 to 6000, 6000 to 12,000, and greater than 12,000 cfs; and (3) annual, 20-year low flows greater than 1500 cfs, with the flow rates identified for ranges of 1500 to 3000, 3000 to 6000, 6000 to 12,000, and greater than 12,000 cfs. Criteria relating river flow rates required for various size generating stations both for sites located on reservoirs and for sites without local storage of cooling water are discussed. These criteria are used in conjunction with plant water consumption rates (based on both instantaneous peak and annual average usage rates) to estimate the installed generating capacity that may be located at one site or within a river basin. Projections of future power capacity requirements, future demand for …

A review of the quality of the various possible forms of the starting silicon material leads to the conclusion that wafers from Czochralski-pulled ingots are the only form of silicon which will be available for automated array processing for the next several years. A new calculational procedure has been developed and tested for the optimization of performance of both the front and back contact metallizations. The survey of present-day contact and interconnect metallization technology for silicon devices has been completed. A semi-automated parallel gap welding procedure is defined in detail, and a further analysis of panel material costs is presented. Glass panels of three configurations are considered the best choice and these are described. A complete description of the cost analysis procedure for one particular solar array module manufacturing sequence is given. The basic materials costs of the process sequences developed and studied are beginning to approach interesting values. The lowest cost projected to date for material and expense items for array module manufacturing is $0.30/W. (WDM)

The effects on chromatographic peak shape of dead volume and flow rate have been examined using the standard deviation of the Gaussian component of the peak and the exponential decay constant. For a non-retained solute, addition of dead volume led to an increase in the standard deviation that was independent of flow rate while the decay constant was inversely proportional to the flow. Smaller changes were observed for a retained species.

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Bellaire, Texas that includes local, state, and national news along with advertising.

Monthly newspaper from Washington, District of Columbia published to promote interest in the observance of and participation in the American Bicentennial.

This document, which covers the period January 1-June 30, 1976, describes progress in the following areas: (1) advanced analytical techniques for the clinical laboratory, (2) fast clinical analyzers, (3) development of a miniaturized analytical clinical laboratory system, (4) centrifugal fast analyzers for animal toxicological studies, and (5) chemical profile of body fluids.

Two contract modifications (one to study the effect of reactor design on bioconversion efficiency and the other to study the effects of variable speed mixing) are reported. All equipment has now been obtained, but installation is not complete. (JSR)

Literature reviews indicate that existing information is incomplete, often contradictory, and of questionable value for the prediction and assessment of ultimate impact from fusion-associated activation products and other chemical releases. It is still uncertain which structural materials will be used in the blanket and first wall of fusion power plants. However, niobium, vanadium, vanadium-chromium alloy, vanadium-titanium alloy, sintered aluminum product, and stainless steel have been suggested. The activation products of principal concern will be the longer-lived isotopes of /sup 26/Al, /sup 49/V, /sup 51/Cr, /sup 54/Mn, /sup 55/Fe, /sup 58/Co, /sup 60/Co, /sup 93/Nb, and /sup 94/Nb. Lithium released to the environment either during the mining cycle, from power plant operation or accident, may be in the form of a number of compound types varying in solubility and affinity for biological organisms. The effects of a severe liquid metal fire or explosion involving Na or K will vary according to inherent abiotic and biotic features of the affected site. Saline, saline-alkaline, and sodic soils of arid lands would be particularly susceptible to alkaline stress. Beryllium released to the environment during the mining cycle or reactor accident situation could be in the form of a number of compound types. Adverse effects …