automated array assembly. phase 2. annual technical progress report, 1978

the automated array assembly task, phase 2 of the low cost silicon solar array (lssa) project is a process development task. this contract includes solar cell module process development activities in the areas of surface preparation. plasma processing, diffusion, cell processing and module fabrication. in addition, a high efficiency cell ..

methane production by anaerobic digestion of biomass. final report of innovative research program subtask, december 1977--september 1978

it has long been known that methane is produced during the anaerobic digestion of agricultural wastes, but this potential source of fuel has not been greatly exploited in the united states. the chief reason is that anaerobic decomposition of lignocellulosic materials occurs very slowly, resulting in a need for long detention times and lar..

fabrication and characterization of grafted hydrogel coatings prepared by active-hydrogen techniques for vascular devices

the problem of making the surfaces of plastics used for vascular implants compatible with blood was approached by coating them with hydrogels by the atomic-hydrogen grafting method. early demonstrations of the method showed that the coatings, in some tests, could have minimal platelet and protein deposition and thrombogenesis. the earlier..

development of methods and techniques for final treatment of combined municipal and textile wastewater including sludge utilization and disposal

the investigations were carried out on laboratory scale, employing various mixtures of dyeing and municipal wastewaters. the processes studied were: coagulation, ozonization, chlorination, activated carbon, activated sludge, and anaerobic digestion. lime appeared to be the best coagulation agent. feasibility of lime reclamation by recalci..

source assessment: textile plant wastewater toxics study, phase ii

the report gives results of a study concerned with batea for the textile manufacturing industry. the level of removal of specific toxic pollutants and toxicity (measured by results of bioassays) attained by selected tertiary systems treating secondary effluents from textile plants was examined. tertiary treatment systems (unit processes a..

dry ice, liquid pulse pump cooling system

a co2-powered system for cooling garments by conduction cooling when the wearer is subjected to heat stress is provided. a dry ice refrigerant source provides the cooling and the co2 gas given off during sublimation of the dry ice provides the motive power for a diaphragm type pump which transports heat transfer liquid between the heat so..

radiation damage of laser materials. 1964-april, 1980 (citations from the ntis data base)

laser beam damage to laser materials such as optical glass, glass fibers, alkali metal halides, metals, mirrors, optical coatings, dielectrics, semiconductors, and matrix materials is studied. the majority of these citations concern infrared laser damage to infrared optical materials. (this updated bibliography contains 217 abstracts, 10 ..

phase 2 of the array automated assembly task for the low cost solar array project

the process sequence for the fabrication of dendritic web silicon into solar panels was modified to include aluminum back surface field formation. plasma etching was found to be a feasible technique for pre-diffusion cleaning of the web. several contacting systems were studied. the total plated pd-ni system was not compatible with the pro..

primary adhesive bonded structure technology (pabst). phase iii tooling, fabrication and quality assurance

the primary adhesively bonded structure technology (pabst) program's overall objective was to demonstrate significant improvements in cost, integrity, and durability of primary fuselage structures using latest adhesive bonding techniques, materials, and processes accordingly, this document summarizes the findings during phase iii, fabrica..

cadmium sulfide/copper sulfide heterojunction cell research. final report, september 30, 1977-july 31, 1979

the objective of this program is to conduct research on solar cells of the copper sulfide/cadmium sulfide (and cadmium sulfide-zinc sulfide alloy) type with the goal of producing thin film cells capable of 10 am1 conversion efficiency with less than 5 degradation in performance over a period of 20 years. new evaluation methods reveal cell..