preprints for the 111th isij meeting, part i

this conference contains 28 papers. topics discussed are as follows: ironmaking; steelmaking; shoping and fabrication; instrumentation, and control; chemical analysis; surface treatment; products and properties. all the papers are abstracted separately technical and professional papers from this conference are indexed and abstracted with ..

alterations in potentiometric response of glucose oxidase platinum electrodes resulting from electrochemical or thermal pretreatments of a metal surface

a linear correlation has been observed between the log (glucose concentration) and measured potentials at bare pt-and at enzyme/pt-indicating electrodes. a comparison study of five different methods of electrode pretreatment was undertaken to evaluate the nernstian behavior of the sensors. the potentiostatically controlled double-layer an..

effect of interaction between fiber and matrix on impact properties of glass fiber reinforced rigid polyurethane foam

it has been demonstrated that fiber-matrix adhesion, in particular, is a key factor for the improvement of impact strength of composite materials, and the surface treatment of fiber has a substantial effect upon this property in many cases. in this article the effects of fiber length, fiber volume fraction, and matrix density upon impact ..

how to select an asbestos substitute

although there are several dozen different trade names for asbestos substitutes, there are only about five significant different product groups that comprise the entire range of substitute textiles available. those seeking to replace asbestos must be careful in selecting a substitute, and must set their own standards of acceptance for eac..

chemical modification of polyester fiber surfaces by amination reactions with multifunctional amines

the feasibility of incorporating amine groups into the surface of polyester (pet) fibers by reaction with multifunctional amines was investigated. reactions of diethylenetriamine (deta), triethylenetetramine (tetta), and tetraethylenepentamine (ttepa) with pet monofilaments and with a multifilament yarn were studied microspectrophotometri..

radiation sources of the institute for research, production, and application of radioisotopes, praha, and their capabilities

the institute for research, production, and application of radioisotopes, uvvvr, is at the present time equipped with two large cobalt gamma sources, perun and radegast, and with the small laboratory source gammacell 220. the capacity of these radiation sources is about 50 used for contract and service irradiations (e g. for the radiation..

immobilized enzymes in blood plasma exchangers via radiation grafting

the enzyme asparaginase was immobilized onto a porous hollow polypropylene (pp) fiber blood plasma exchange device for the treatment of acute lymphocytic leukemia. the devices were first radiation grafted with polymethacrylic acid (poly(maac)). this introduces carboxy groups onto the surface of the fibers. several variables were studied i..

artificial membranes as carriers for the immobilization of biocatalysts

artificial membranes, due to their interesting properties (high surface area per unit volume, possibility to combine separation with chemical reaction etc. ) have interested biotechnologists in their attempt to find carriers for the immobilization of biocatalysts various systems and modes of operation have been used with the biocatalyst e..

periodical batch culture of the immobilzed growing fungi sporotrichum cellulophilum producing cellulase in the nonwoven materials

the thermophilic fungus sporotrichum cellulophilum was immobilized with nonwoven materials for cellulase production. the concentration in the medium was an important factor controlling cellulase production. the growth of the immobilized fungi depended on the spaces in the nonwoven materials. immobilized growing fungi were retained by the ..

enhanced enzymolysis of cotton fibres and cotton plant stalks

the results of enzymolysis studies on cotton fibers and cotton plant stalks using penicillium funiculosum thom f//4 are reported the substrates were used in the never-dried state as well as in the dried condition. in addition, the effect of using substrates which were not dried subsequent to alkali pretreatment and aqueous removal of alka..