Histological Differentiation of Wool Fibres in Formic Acid
(1982). Histological Differentiation of Wool Fibres in Formic Acid. The Journal of The Textile Institute: Vol. 73, No. 3, pp. 149-151.
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Influence of MgO Additiions on the Microstructure and Mechnical Properties of Al 2 O 3 ‐ZrO 2 Composites
The effect of MgO and ZrO 2 dopants, added separeately or simultaneously, on the grain size, denisity, and toughness of Al 2 O 3 was studied. Small ZrO 2 addotoopms (<100 ppm) had little effect, whereas larger amounts decreased the sintered density. Additions of Mgo Up to the solubility limit (∼ 300 ppm) increased…
Phenomenological Considerations of Phase Transformations in Indium-Rich Alloys
Indium-rich alloys containing solute atoms such as Cd, Hg, Tl, Sn and Pb undergo four kinds of phase transformation: (1) fcc→fct ( c / a >1), (2) fcc→fct ( c / a <1), (3) fct ( c / a <1)→fco→fct ( c / a >1) and (4) fct ( c / a <1)→fct ( c / a >1). We have investigated these phase transformations usin…
Ultrastructural Changes During Chopping and Cooking of A Frankfurter Batter
ABSTRACT Frankfurters were made in a nonvacuum bowl chopper. Batter samples were taken after 2, 6, 9, 12, and 15 min of chopping and after 30, 60, and 90 min of cooking. Both raw and cooked batter samples were fixed in solutions of glutaraldehyde and paraformaldehyde, OsO 4 , and then embedded in SPURR (low‐viscosity…
Accident Condition Performance of Fuels for High‐Temperature Gas‐Cooled Reactors
The performance of TRISO‐coated high‐enriched uranium/ low‐enriched uranium fissile and ThO 2 fertile fuel particles was studied under simulated accident conditions at temperatures up to 2700°C. A total of 1663 fuel particles from eight irradiation capsules with burnups covering the range of design conditions was test…
Cathodic Deposition of Amorphous Alloys of Silicon, Carbon, and Fluorine
Amorphous silicon containing fluorine and carbon, pure and doped with boron or phosphorus, was deposited cathodically from solutions of K 2 SiF 6 in acetone with HF . The conditions for optimum deposition were determined, and the deposits were characterized by electron microprobe x‐ray emission, electrical conductivit…
Threshold switching in hydrogenated amorphous silicon
Threshold switching is observed in n+-i-n+ sandwich structures of hydrogenated amorphous silicon after an initial forming process. At the threshold voltage the device switches from a low conductance to a high conductance state. The devices remain stable after more than 109 switching operations at a pulse frequency of…
Anodic Leveling under Secondary and Tertiary Current Distribution Conditions
Anodic leveling of a triangular surface profile under secondary and tertiary current distribution conditions has been studied both theoretically and experimentally. Numerical simulation of the leveling process was carried out using the finite element method (FEM). Experiments were performed in a flow cell with advanci…
Stress Corrosion Cracking of 70/30 Brass in Acetate, Formate, Tartrate, and Hydroxide Solutions
It has been shown that stress corrosion cracking can be induced in 70/30 brass by solutions of sodium acetate, formate and hydroxide, and by a tartrate solution, of which only the latter has previously been reported as a potent environment for the cracking of brass. The stress corrosion cracking tests were conducted a…
Phosphazene high polymers with bioactive substituent groups: prospective anesthetic aminophosphazenes
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhosphazene high polymers with bioactive substituent groups: prospective anesthetic aminophosphazenesHarry R. Allcock, Paul E. Austin, and Thomas X. NeenanCite this: Macromolecules 1982, 15, 3, 689–693Publication Date (Print):May 1, 1982Publication History Published online1…
Reaction mechanisms in catalysis by metals
The primary steps involved in a heterogeneously catalyzed reaction are illustrated schematically by Figure 1. These include adsorption and desorption steps of the particles involved as well as surface migration and reactive and nonreactive interactions. Thus a reaction path may be offered to the overall chemical trans…
10–AN ALTERNATIVE APPROACH TO TWO-FOLD WEAVING YARN PART I: CONTROL OF SURFACE FIBRES
This is the first of a series of papers dealing with work on the surface structure of yarns, which formed the basis for the development of the Sirospun process. The paper explains that untreated single yarns are generally unsuitable for use as warp yarn in weaving, mainly because the surface fibres are not adequately…
Antiferroelectrics, ferroelectrics and pyroelectrics of a stibiotantalite structure
Theoretical and practical advances in the field of ferroelectcitricity stimulate search for, as well as preparation and investigation of, novel ferroelectrics exhibiting high pyroelectric, electric, optical and mechanical characteristics. This situation necessitates systimatization in analysis of available experimenta…
Gelation of Limulus Amoebocyte Lysate by Simple Polysaccharides
The Limulus lysate gelatin activity of several simple polysaccharides including yeast mannans and bacterial dextrans was investigated. The mannans from Saccharomyces cerevisiae wild and mutant strains possessing dense branches showed positive gelatin activity at concentrations of 1 microgram/ml or more regardless of d…
Photolysis of pyridinoline, a cross-linking amino acid of collagen, by ultraviolet light
Pyridinoline, a cross-linking amino acid of collagen, was degraded by irradiation of ultraviolet light. The decomposition rate varied with pH of the solution and wavelength of irradiation light. The maximum of the degradation rate at individual pH coincides with the ultraviolet absorption maximum. Namely, it was maxim…
Electrical properties of sodium copper sulfide (Na3Cu4S4), a mixed-valence one-dimensional metal
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrical properties of sodium copper sulfide (Na3Cu4S4), a mixed-valence one-dimensional metalZbigniew Peplinski, David B. Brown, Timothy Watt, William E. Hatfield, and Peter DayCite this: Inorg. Chem. 1982, 21, 5, 1752–1755Publication Date (Print):May 1, 1982Publication H…
The core structures of a ⅓〈1123〉{1122} edge dislocation under applied shear stresses in an h.c.p. model crystal
The behaviour of a ⅓〈1 123〉{1122} edge dislocation under the effect of an external shear stress applied on {1122} planes has been studied by computer calculation. Before the application of the external stress, the dislocation has either of two typos of core configuration; one spreads as two twin faults on {1121} and {…
Preparation of tantalum .mu.-dinitrogen complexes from molecular nitrogen and reduced tantalum complexes
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of tantalum .mu.-dinitrogen complexes from molecular nitrogen and reduced tantalum complexesScott M. Rocklage, Howard W. Turner, Jere D. Fellmann, and Richard R. SchrockCite this: Organometallics 1982, 1, 5, 703–707Publication Date (Print):May 1, 1982Publication…
Skin Collagen Metabolism in the Streptozotocin-induced Diabetic Rat: Enhanced Catabolism of Collagen Formed Both Before and During the Diabetic State
Collagen catabolism has been measured in skins of streptozotocin-induced diabetic rats. For measuring catabolism of collagen synthesized de novo during the diabetic state, we measured the amounts of [3H]hydroxyproline-containing degradation products in skins of diabetic rats, killed 4 h after [3H]proline injection (pr…
Chemical properties of water-soluble porphyrins. 2. The reaction of iron(III) tetrakis(4-N-methylpyridyl)porphyrin with the superoxide radical dioxygen couple
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical properties of water-soluble porphyrins. 2. The reaction of iron(III) tetrakis(4-N-methylpyridyl)porphyrin with the superoxide radical dioxygen coupleD. Solomon, P. Peretz, and M. FaraggiCite this: J. Phys. Chem. 1982, 86, 10, 1842–1849Publication Date (Print):May 1,…