herstellung von mikrostrukturen mit grossem aspektverhaeltnis durch praezisionszerspanung mit formdiamanten. (fabrication of microstructures with high aspect ratios by precision cutting using profile dressing diamonds)

as a contribution to the new activities in microengineering pursued by the karlsruhe nuclear research center a purely mechanical technique for microstructure fabrication has been developed jointly with messerschmitt-boelkow-blohm (mbb). the technique is based on surface structuring of foils by precision cutting with profiled micro-diamond..

curved channel mcp improvement program. final report

blowholes and blemishes were determined to start at two stages of manufacturing. sperical blowholes resulted from trapped gas between the high melting temperature bond glass and the mcp wafer. during thermal processing, the trapped gas expanded and displaced the softened channel glass to form a spherical inclusion. this defect was elimina..

effect of surface mass on roof thermal performance

the roof of a building is exposed to the most severe environment that is expected by any component of a building envelope. diurnal peak surface temperature of 140 to 185/degree/f are not uncommon. the addition of thermal mass to the exterior surface of the roof should lessen the severity of the environment that is experienced by the roof ..

pressurized sleeve: a garment part sustains a pressure differential without unduly restricting the user. ntis tech note

this citation summarizes a one-page announcement of technology available for utilization. a fabric sleeve withstands a pressure difference of 8 lb/sq in while allowing the wearer fairly easy movement. developed as a replacement for a space-suit sleeve rated only to 30 kpa, the new sleeve gives greater range of movement with lower restrict..

heat-shrinkable, seamless fabric tube: weaving produces a generally tapered shape; heat-shrinking gives a final shape. ntis tech note

this citation summarizes a one-page announcement of technology available for utilization. a seamless fabric tube under consideration for use in pressure suits like those worn by astronauts may also be useful on earth for protective garments. the tube is woven in a tapered shape from polyester yarn. it is then placed on a heated mandrel. t..

studies in advanced silicon solar cells

this report addresses several issues of interest for the design and fabrication of silicon solar cells. the report begins with a theoretical study concerning the necessity for using more complex mobility models in order to accurately describe the operation of concentrator solar cells. the report then details a modeling and experimental st..

composite photobioelectronic material

the research described presents a method for chemically modifying the surface of green plant photosynthetic membranes in such a way that electrical contact can be made. colloidal platinum was prepared, precipitated directly onto photosynthetic thylakoid membranes from aqueous solution, and entrapped on fiberglass filter paper. this compos..

evaluation of transfer films of salox m on 440c for hpotp bearing cage applications, task 119

the objective of the task was to evaluate the suitability of a bronze-filled polytetra fluoroethylene (salox m) as the cage material in space shuttle main engine (ssme) high pressure oxygen turbo pump (hpotp) bearings. the role of the cage pocket material will be to provide a transferred lubricating interface at the ball-race contact regi..

study of the factors effecting the deposition of smooth plasma polymers

we have been working to develop smooth ch coatings on glass and polymer spherical fuel capsules. last year we were requested to dramatically improve the surface finish of the glow discharge polymer (gdp) coatings. this report summarizes the development carried out to accomplish this task and the results obtained along the way. 4 refs., 8 ..

triphenyl phosphite: in vivo and in vitro inhibition of rat neurotoxic esterase (journal version). journal article reprint: triphenyl phosphite: in vivo and in vitro inhibition of rat neurotoxic esterase (journal version)

organophosphorus compounds which, after acute administration, inhibit neurotoxic esterase (nte) by > or = 65 and undergo a subsequent 'aging' reaction, produce a delayed neuropathy characterized by degeneration of large and long nerve fibers. the present studies examine in detail the nte-inhibiting properties of triphenyl phosphite (tpp),..