preparation and characterization of a ni-3 wt. u reference fission product source for super phenix

the fabrication and quality control of ni-3 wt. u (93**2**3**5u) alloy rods (diameter: 8 mm, total lentgh: 8 m) used as a reference fission product source (rfps) are described. this rfps is needed for the calibration of the fuel element rupture detector which is used for the continuous monitoring of the delayed neutron activity in the pri..

reinforcements for every need: new fibers and novel forms

the article consists of a summary of new reinforcing fibers and fabrics. included in the discussion are new glass rovings, mats and cloth; new looks in mats and veils; stronger carbon fibers; graphite mat, cloth and felt; and cold plasma surface treatment

effect of surface treatment and sizing of c-fibres on the mechanical properties of cfr thermosetting and thermoplastic polymers

the paper describes a systematic study of oxidative surface treatment of carbon fibers by wet, dry and anodic oxidation. it is shown that in cases where thermosetting resins are used as the matrix, improvement of adhesion between fiber and matrix is caused by chemical interaction. the reactive surface oxides were identified by titration, ..

communications to the editor steady state modelling of a hollow fiber enzymatic reactor

in the present note, the authors try to identify a complete set of process variables for the bioreactor. the examined reactor is a hollow fiber enzymatic one with immobilized cells containing the enzyme molecules. the model considers a single fiber reactor. to check the model predictions, some experimental kinetic results will be consider..

enzyme-entrapping behaviors in alginate fibers and their papers

enzyme immobilization in the form of fiber and paper was easily achieved by wet spinning of aqueous admixture of sodium alginate and enzymes into divalent metallic ion solution as a coagulating bath, followed by paper making of resultant shortly cut fibers. entrapment yields of enzymes used, e. g. , glucoamylase, cyclodextrin glucanotrans..

dimensional stability of woven wool fabrics: part ii - its effects on garment making

there is no easy solution to many of the problems with dimensional stability in woven fabrics, but a better understanding of their nature should help both cloth manufacturer and garment maker to overcome some of them, or at least avoid the application of inappropriate remedies. piece-dyed fabrics are an especial source of difficulties, an..

elastomers as biomaterials

although a wide range of biomedical applications are currently met by synthetic elastomers, only polysilicones and poly(ether-urethane)s have extensive usage. the syntheses and properties of these materials are reviewed, and chemical modifications aimed at improving their performance, in particular their haemocompatibility, are described...

enhanced nutrient transport in hollow fiber perfusion bioreactors: a theoretical analysis

to improve the mass transfer in hollow fiber perfusion bioreactor, the effect of radial convective fluxes superimposed on diffusion is studied in this paper. radial convection of the feed in a shell and tube hollow fiber perfusion reactor is shown to be useful in increasing catalyst efficiency and production rates per unit volume. a serie..

preprints for the 112th isij meeting

this conference proceedings contains 33 papers. 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. all of these papers are abstracted separately. technical and professional..

aesf 13th plating in the electronics and printed circuits industry symposium

this conference proceedings contains 17 papers. topics covered are: approaches to surface mount technology; advanced control for plating lines; precious metals in electronics; x-ray calibration standards; hydrogen peroxide-sulfuric acid etching for pc boards; job-shop management; electroplated palladium-silver alloys; measuring interface ..