memoirs of the government industrial research institute, shikoku, no. 21, march 1991. studies on biochemical pulping of bast fibers for fine japanese paper ('washi')

contents: screening of microorganisms producing pectinolytic enzymes for biochemical pulping of bast fibers; maceration mechanism of biochemical pulping of bast fibers by alkalophilic pectinolytic enzymes; production of pectinolytic enzymes by erwinia carotovora and their stability; biochemical pulping of 'kozo' bast by erwinia carotovora..

investigation of some mechanical and thermal properties of lunar simulant materials heated at 2.45 ghz

lunar simulant material was fabricated to simulate apollo 11, apollo 15, and apollo 16 soils. the approximate compositions which these soils simulate are given. samples of each soil simulate were fabricated into right circular cylinders, placed into a microwave reaction cavity, and heated using 2.45 ghz radiation to a particular processin..

advances in silicon carbide chemical vapor deposition (cvd) for semiconductor device fabrication

improved sic chemical vapor deposition films of both 3c and 6h polytypes were grown on vicinal (0001) 6h-sic wafers cut from single-crystal boules. these films were produced from silane and propane in hydrogen at one atmosphere at a temperature of 1725 k among the more important factors which affected the structure and morphology of the g..

fabrication overview: fabrication of a metal-plated mirror, beginning from a performance requirement

the principal steps in manufacturing a metal-plated mirror are substrate fabrication, plating, and final surface finishing. the intermediate specifications for these operations, as well as the final specification, are developed (ideally) during an iterative planning process that includes the optical designer, the project engineer, a metro..

in-process inspection study (ipis) for abrasive machining (honing) final rept. jun 89-sep 90

this study was to prove the feasibility of in-process inspection of parts being honed on the inside diameter. capacitance and inductive (eddy current) sensors were bench tested for accuracy and for the sensitivities of these measurements to honing oil. unlike capacitance sensing, eddy current sensing was insensitive to the oil, so a honin..

x ray imaging microscope for cancer research

the nasa technology employed during the stanford msfc llnl rocket x ray spectroheliograph flight established that doubly reflecting, normal incidence multilayer optics can be designed, fabricated, and used for high resolution x ray imaging of the sun. technology developed as part of the msfc x ray microscope program, showed that high qual..

differential modulation of single voltage-gated calcium channels by cholinergic and adrenergic agonists in adult hippocampal neurons reprint: differential modulation of single voltage-gated calcium channels by cholinergic and adrenergic agonists in adult

the hippocampal formation has been a popular preparation with cellular neurophysiologists. the widespread use of the in vitro hippocampal slice preparation is at least partially due to its unique structure in which the cell bodies of the primary cell types and their major synaptic connections are arranged in layers transverse to the long ..

ultraclean, integrated processing of thermal oxide structures reprint: ultraclean, integrated processing of thermal oxide structures,

ultraclean, integrated metal-oxide-semiconductor oxide fabrication has been investigated for the first time by combining (1) surface cleaning in inert ambient, (2) wafer transfer through ultrahigh vacuum, and (3) thermal oxidation in an ultrahigh vacuum-based reactor. device quality oxide structures are obtained (evidenced by dielectric b..

hf surface passivation failure in integrated thermal oxidation processing. reprint: hf surface passivation failure in integrated thermal oxidation processing

ultraclean, integrated mos oxide fabrication has been investigated for the first time by combining (1) surface cleaning in inert ambient, (2) wafer transfer through ultrahigh vacuum, and (3) thermal oxidation in a uhv-based rector. device-quality oxide structures are obtained under suitable conditions, while under other circumstances chem..

entwicklung einer fertigungstechnologie fuer leichtbauteile aus beryllium fuer die luft- und raumfahrt. abschlussbericht (development of technology to fabricate light metal components from beryllium for aerospace application. final report)

using the knowledge received from literatures/reports and the own experiences different manufacturing steps like thin-sheet processing, forming, surface treatment, plating, brazing or other bonding techniques and the application of the destructive and nondestructive quality inspection have been examined. the result of these investigations..