applying high power lasers to shipbuilding. part 1

shipbuilding today is a business where overcapacity worldwide has placed high demands on productivity in order that individual shipyards can remain competitive. one of the most effective ways of improving ship construction efficiency is to build in blocks and units which can be extensively outfitted with equipment in the safe environment ..

x-ray photoelectron spectroscopic studies of carbon fiber surfaces viii - a comparison of type i and type ii fibers and their interaction with thin resin films

type i (i high-modulus hm) and type ii (high-strength ht) carbon filters electrochemically treated in a variety of electrolytes have been analyzed using x-ray photoelectron spectroscopy. a comparison of the differences in surface functionality and the possible interaction of treated fibers with epoxy resin is reported the amount of carbon..

temperature-gradient calendering of foodboard

temperature-gradient (tg) calendering produces smooth, glossy surfaces with less bulk reduction than conventional machine calendering. the unheated paper web is calendered in a single pass through a nip between two hot calender rolls. the web touches the hot rolls only in the nip. consequently, the surface fibers are permanently deformed ..

role of nonkeratinous proteins in crimp formation of wool fibers by draft and immediate relaxation

the role of nonkeratinous proteins in the crimp formation of wool fibers by draft and immediate relaxation was investigated. for this purpose, australian shropshire wool fibers were treated with formic acid and pronase (proteolytic enzyme) to modify the nonkeratinous proteins. formic acid is known to remove some of the intercellular cemen..

textile glass fibres

textile glass fibres are those glass fibres which, in contrast to isolated filaments, can be further processed by the methods used for textiles, e. g. weaving. in din 61850 a distinction is made between glass filaments and glass staple fibres. glass filaments which are drawn from the nozzle in a continuous unlimited length have become mor..

cephalosporin c acylase, part i. isolation and cultivation of cephalosporin c acylase-producing microorganism

paecilomyces sp. c-2106 that possesses cephalosporin c (cpc) acylase activity capable of deacylating cpc to produce 7-amino cephalosporanic acid (7-aca) was isolated. the 7-aca production was identified by the antibacterial activity and spectrum of the activated compound, thin layer chromatography (tlc), high performance liquid chromatogr..

preprints for the 113th isij meeting, part vi

this issue of the journal contains 22 papers presented at a conference. they are arranged in the following groups: ironmaking; steelmaking; shaping and fabrication; instrumentation and control; chemical analysis; surface treatment; products and properties; and new materials and processing. technical and professional papers from this confe..

surface flaws in zrf//4-based fluoride optical fibres with improved tensile strength

fluoride glass is widely recognized as the most promising material for ultra-low loss optical fibers. this letter reports surface flaw formation in zrf//4-based fluoride fibers. discussions are based on the effect of preform surface treatment on the tensile strength and fiber surface analysis using electron spin resonance (esr) measuremen..

effect of sand surface treatment on sand-filled composites

sand/unsaturated polyester composites, 50/50 composition by weight, were prepared from sand treated with different silane solutions. n-2-aminoethyl-3-aminopropyltrimethoxy silane (a0700) and 3-aminopropyltriethoxy silane (a0750) were used. water and styrene solutions were employed to treat the sand. it was found that a0750 in styrene prod..

influence of the interphase on composite properties: poly(ethylene-co-acrylic acid) and poly(methyl vinyl ether-co-maleic anhydride) electrodeposited on graphite fibers

the electrodeposition of saturated copolymers onto carbon fibers is investigated, focusing particular attention on improvement of shear and impact properties of the corresponding composites carbon fibers are electrocoated with poly(ethylene-co-acrylic acid) and poly(methyl vinyl ether-co-maleic anhydride) from aqueous media, and fabricate..