A series of ten slicing demonstrations on a multi-wire slurry saw, manufactured by Yasunaga Engineering Company of Japan and distributed by GEOS Corporation of Stamford, Connecticut, was made to evaluate the silicon ingot wafering capabilities. The results revealed that the present sawing capabilities can provide usable wafer area from an ingot 1.05 m/sup 2//kg (e.g., kerf width 0.135 mm and wafer thickness 0.265 mm). Satisfactory surface qualities and excellent yield of silicon wafers were found. One drawback is that the add-on cost of producing wafer from this saw, as presently used, is considerably higher than the systems being developed by Varian and Crystal Systems for the Low-Cost Silicon Solar Array Protect (LSSA), Task II, primarily because the Yasunaga saw uses a large quantity of wire. The add-on cost can be significantly reduced by extending the wire life and/or by reuse of properly plated wire to restore the diameter.

This report provides uses and sources of federal government budget funds for fiscal years 1973-1975.

Two high-pressure flow microreactors continue to function effectively for studies of the hydrodesulfurization of dibenzothiophene, methyl-substituted dibenzothiophene and also for studies of the hydrodenitrogenation of quinoline. The hydrodesulfurization of dibenzothiophene has been examined in a flow system in a totally reproducible fashion free from catalyst deactivation for extended periods. The reaction is first-order in dibenzothiophene, and all of the reaction products except H/sub 2/S are sulfur free. A program for determining the kinetics and reaction network of methyl-substituted dibenzothiophenes was started. For example, the rate for hydrodesulfurization of 4,6-dimethyldibenzothiophene is about one-fifth the rate for dibenzothiophene. The hydrocarbon reaction products except H/sub 2/S are sulfur free; therefore, the initial point of attack is concluded to be the C-S bond. The hydrodenitrogenation of quinoline was examined further by replacing white oil with hexadecane; this substitution permits the determination of the nitrogen-free reaction products by gas chromatography. These studies show that the C-N bond is broken after at least the heterocyclic ring and preferably both rings are hydrogenated. The hydrogenolysis reactions are rate limiting for the overall process of nitrogen removal. The hydrodenitrogenation of acridine is slower than that of quinoline. The reaction network shows that the molecule must be hydrogenated before …

Increased strengths can be achieved in precipitation-hardened stainless steels by deforming the steel and retaining a worked structure prior to aging. JBK-75 is one example of a superalloy which will respond to this type of thermomechanical processing. The present study was undertaken to determine the tensile properties of different forged shapes resulting from the combined effects of strain hardening and precipitation hardening. Various size bar stock was deformed by High Energy Rate Forging (HERF) and subsequently aged. Resultant tensile properties were quite variable, showing a wide range of strengths and ductilities, well below expected values. The tensile properties were strongly dependent upon forging geometry.

One of the problems confronted in the investigation of environmental health and in biological research more generally is the fact that organisms often respond to combinations of treatments in ways which are not predictable from the way they respond to each of these taken separately. One air pollutant may, for example, disable the respiratory tract's self cleaning mechanisms and thereby increase its sensitivity to the effects of other pollutants. It is important that laboratory experiments be able to simultaneously detect the effects of the various possible combinations of treatments in a way that utilizes the data as effectively as possible. This paper deals with the optimal use of data from such experiments when the response variable can be regarded (possibly after undergoing a suitable transformation) as having a normal distribution with mean determined by the combination of treatments it has undergone.

It is noted that correction of the coupling resonance, ..nu../sub x/ - ..nu../sub y/ = 0, in intersecting storage accelerators with superconducting magnets requires two families of correcting skew quadrupoles with two independent power supplies. A possible location for the two families is suggested, and results are given for the required strengths of the skew quadrupoles and the required accuracy of the corrections. The results are applied to the ISABELLE storage accelerator.

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A report on the comprehensive and continuing study initiated to develop from the existing street pattern a workable transportation system to serve the anticipated needs of the San Antonio Metropolitan Area.

Budget adopted by the City Council for San Antonio, Texas describing revenue estimates, appropriations, and other financial information for the fiscal year 1976-77.

The workshop is divided into the following subjects: water quality, air quality, biological impact, hazards, environmental impact evaluation, and land use and socio-economic impact. Individual problems in each subject area are evaluated by the following criteria: probability of occurrence, seriousness of consequences, resource applicability, time urgency for new research, and researchability for new research. Recommended approaches to solution are given for each problem. Minority statements are given in some cases. (MHR)

This report outlines the amendment H.R. 4690 that provides a general social security benefit increase by 10%.

This report presents field and laboratory results of 508 groundwater samples and 96 stream sediment samples for a reconnaissance geochemical survey of the Houston quadrangle, Texas.

Summary of airborne radiometric surveys of certain sediments in Bighorn Basin, Wyoming, and Montana

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Federal assistance to states and communities for the control of drug abuse

Report discussing the influence of Fyodor Dostoevky's writings on the work of Nathalie Sarraute.

Design and engineering panameters for the F-144-1 shipping container for transporting FFTF fuel pin bundles or fuel assemblies are presented. (TFD)

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From abstract: Results of a reconnaissance geochemical survey of the San Antonio Quadrangle , Texas are reported. Field and laboratory data are presented for 781 groundwater samples 541 stream sediment samples, and 331 stream water samples.

Tables presenting field and laboratory data for 781 groundwater samples 541 stream sediment samples, and 331 stream water samples collected from the San Antonio quadrangle.