Materials Literature
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It has been shown that isotopically labelled sheep wool wax is carried passively along the wool fibre as a band by growth of the wool, and that it does not flow along the fibre to any large extent during experiments of several months. This supports the view that the function of sebum, in mammals in general, is to prot…
We consider the steady state reaction-diffusion problem for a permeable catalytic particle with Langmuir–Hinshelwood kinetics under isothermal and quasi-isothermal conditions. It is known that there may be multiple solutions due to either strong adsorption or external thermal effects; in the first case, an arbitrarily…
To a first approximation the addition of a solute (Ti) to a solvent (Fe) results in a change of lattice parameter which varies linearly with the atomic concentration of solute. However, it has been proposed by Raynor that in a transition-metal alloy system this ideal behaviour is not necessarily obeyed. A survey of pu…
AThe present paper deals with the findings of an experimental comparison of the optical properties of cholesteric (chiral nematic) and chiral nematic) and chiral semctic phases.
Abstract A combination of different experimental apprati has allowed dynamic mechanical spectroscopic measurements to be made as function of variable, constant offset stress, as well as during creep of bisphenol‐A‐polycarbonate. The deformation system was calibrated with aluminum and by comparison of low‐stress dynami…
Gel having a Mg:Si ratio identical to that of talc (3:4) was treated hydrothermally at six temperatures between 300' c and 550' C and I kbar for times of7, 30, 50, 120 and 200 days in order to identify reaction trends. Talc crystallized first at all temperatures. It then reacted to form stevensite at temperatures betw…
Abstract Polystyrene has been modified by electrophilic substitution reaction with phthalic anhydride and pyromellitic dianhydride. The products have been characterized by physical characteristics, solubility differences, elemental analysis, infrared spectra, ion‐exchange capacity, and pH metric titration. The ultimat…
Thirteen gersdorffite (NiAsS) specimens were analyzed with electron microprobe, powder diffraction, and precession camera techniques. For each specimen, a sample with a well-developed cube form {lOO}was selected. Intensity data were collected from 27 reflections, which are mostly forbidden by cubic space group Pa3, wi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSimultaneous absorption of dilute nitric oxide and sulfur dioxide into aqueous slurries of magnesium hydroxide with added iron(II)-EDTA chelateEizo Sada, Hidehiro Kumazawa, Yasushi Sawada, and Takashi KondoCite this: Ind. Eng. Chem. Process Des. Dev. 1982, 21, 4, 771–774Publ…
A state of the art review of nonsilica based infrared fibers is presented. Two types of fiber materials have been investigated--crystals and glasses. Crystal fiber work appears to be focused on development of short haul CO/sub 2/ laser power delivering lines at 10.6 µm. The maximum delivering power of the CW CO/sub 2/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of simulated crystal size distribution control systems based on nuclei density and supersaturationRonald W. Rousseau and Thomas R. HowellCite this: Ind. Eng. Chem. Process Des. Dev. 1982, 21, 4, 606–610Publication Date (Print):October 1, 1982Publication History Pu…
Point has suggested that during the polymer crystallization process, individual stems form by zippering of monomer segments onto the substrate and that at any time during the zippering process the stem can fold over, thus initiating a new stem. We augment the treatment of Point analytically by allowing each of the sub…
The strength of sintered silicon nitride was measured by three‐point bending, four‐point bending, and expanded‐ring tests at room temperature. The data obtained were analyzed using Weibull statistics. The results indicate that effective volume is the major factor determining strength.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetaphosphite (PO2-) symmetric-stretching Raman line and molecular-aggregation states of barium dialkyl phosphatesHirofumi Okabayashi, Tadayoshi Yoshida, Teruki Ikeda, Hiroatsu Matsuura, and Teizo KitagawaCite this: J. Am. Chem. Soc. 1982, 104, 20, 5399–5402Publication Date…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTriboluminescence of crystals containing the triphenyl groupB. P. Chandra and Jeffrey I. ZinkCite this: J. Phys. Chem. 1982, 86, 21, 4138–4141Publication Date (Print):October 1, 1982Publication History Published online1 May 2002Published inissue 1 October 1982https://pubs.ac…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigation of the electrochemical reactivity and axial ligand binding reactions of tetraphenylporphyrin carbonyl complexes of ruthenium(II)K. M. Kadish, D. J. Leggett, and D. ChangCite this: Inorg. Chem. 1982, 21, 10, 3618–3622Publication Date (Print):October 1, 1982Publi…
The domain structure changes occurring during magnetization of a (110) oriented disc of Tb0·27 Dy0·73 Fe2 have been studied by synchrotron X-radiation topography. Despite there being two easy directions in the specimen surface, the commonest demagnetized configuration consisted of 71° walls on (001) between domains ma…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolvent-binding and solvation effects on the electrode reactions of tetraphenylporphyrin carbonyl complexes of ruthenium(II)K. M. Kadish and D. ChangCite this: Inorg. Chem. 1982, 21, 10, 3614–3618Publication Date (Print):October 1, 1982Publication History Published online1 M…
Potentiostatic studies in 0.5M sodium chloride solution show that an arsenic addition to the alloy is only effective in preventing dealloying of α‐brass at potentials more noble than 0.0V on the hydrogen scale. This potential coincides with that potential at which arsenic in the alloy can be oxidized to soluble arseni…
Abstract Fluorine doped silica samples have been investigated by Raman spectroscopy. The results obtained allow us to propose a model for dopant incorporation in the silica network, involving the formation of SiO 3 F tetrahedron. A relationship between the intensity of the ν(Si‐F) stretching vibration band and the ref…