Materials Literature
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The secondary alcohol oxidase from Pseudomonas sp. catalyzed the oxidation of various vinyl alcohol oligomers with the molecular weight of 220 to 1500 and of β-ketols such as 5-hydroxy-3-heptanone, 4-hydroxy-2-nonanone, 3-hydroxy-5-nonanone, 6-hydroxy-4-nonanone, 7-hydroxy-5-dodecanone, and 8-hydroxy-6-tridecanone. β-…
The steady-state release of active noble gas and iodine from defective fuel elements is described either in terms of a kinetic or a diffusion model. Both models assume a diffusional release in the fuel. Transport of fission products in the fuel-to-sheath gap is represented either by a first-order rate process or diffu…
At the tip of the lower beak of the chicken there were found 15-20 specialised dermal papillae containing large numbers of mechanoreceptors. The Merkel or Grandry corpuscles were situated distally in the papillae and at the papillae base was a collection of Herbst corpuscles. The apex of the papillae, under the scanni…
The sintering behavior of β‐SiC powders with additions of Al, B, and C was studied at 1600° to 1800°C with applied pressures of 20 to 60 MPa. Ceramics with densities of ∼3.08 g/cm 3 were obtained by hot‐pressing at 1650°C and 50 MPa. The bending strength did not degrade up to 1200°C. A large amount of a second phase,…
Embryos of Spisula solidissima (Bivalvia); Crepidula fornicata, C. convexa, Ilyanassa obsoleta (Gastropoda: Prosobranchia); and Dendronotus frondosus, Aeolidia papillosa, and Hermissenda crassicornis (Gastropoda: Opisthobranchia) were reared in the laboratory and examined periodically to determine when shell mineraliz…
This paper presents the results of an evaluation of the statistical distribution of electromigration test failures. Large scale life tests were carried out and the natujre of the failure distributions were determined for lines of varying length and width. In all cases, the distribution were found to be log-normal down…
Lamellar ZrC‐ZrB 2 and Chinese‐script ZrC‐TiB 2 eutectics were directionally solidified using the floating‐zone method of crystal growth. The Knoop microhardness, fracture toughness, and wear resistance were investigated as a function of the phase spacing. Nearly all of the direction ally solidified specimens exhibite…
Diatom frustules are rapidly and inexpensively cleared of protoplasts using commercially available bleach (5.25% sodium hypochlorite). A comparison of periphyton subsamples cleaned by the bleach method described, and the standard nitric acid/potassium dichromate method, showed little difference in the extent to which…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and tungsten-183 NMR characterization of vanadium-substituted polyoxometalates based on B-type tungstophosphate PW9O349-precursorsPeter J. Domaille and George WatunyaCite this: Inorg. Chem. 1986, 25, 8, 1239–1242Publication Date (Print):April 1, 1986Publication His…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoreactions of the triruthenium cluster Ru3(CO)12 and substituted analogsMarc F. Desrosiers, David A. Wink, Ray. Trautman, Alan E. Friedman, and Peter C. FordCite this: J. Am. Chem. Soc. 1986, 108, 8, 1917–1927Publication Date (Print):April 1, 1986Publication History Publ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdered structure in aqueous polysaccharide. 5. Cooperative order-disorder transition in aqueous schizophyllanTakashi Itou, Akio Teramoto, Takasuke Matsuo, and Hiroshi SugaCite this: Macromolecules 1986, 19, 4, 1234–1240Publication Date (Print):April 1, 1986Publication Histo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProton and carbon-13 NMR analysis of poly(β-hydroxybutyrate) isolated from Bacillus megateriumYoshiharu Doi, Masao Kunioka, Yoshiyuki Nakamura, and Kazuo SogaCite this: Macromolecules 1986, 19, 4, 1274–1276Publication Date (Print):April 1, 1986Publication History Published o…
Some organisms are capable of exerting exquisite control ower the crystals they form. Key components in this process are unusually acidic proteins (aspartic acid-rich). In this study we use a series of calciun dicarboxylic acid salts to investigate in vitro how these proeins are capable of interacting specifically wit…
The physical and electrochemical coloration characteristics of tungsten oxide films rf sputtered from a compressed powder WO3 target have been investigated. Oxide films with 3600–9800 Å thickness were deposited on substrates maintained at 200 °C at a total pressure of 0.5–8×10−2 Torr in Ar gas or an Ar-0.5-50% O2 gas…
Abstract Electro microscopy was used to study the phase separation kinetics of a polystyrene/polyvinylmethylether system subjected to a critical deep quench. The size of the phase‐separated domains was found to increase linearly with time, implying that hydrodynamic effects control the rate of growth of the domains in…
Abstract Introductory investigations performed in order to make quantitative electron‐probe microanalysis of very light elements such as boron, carbon, nitrogen or oxygen possible are described. The practical problems encountered in this kind of work are discussed in detail and, where possible, solutions are proposed.…
Abstract Junction probability diagrams show variation in both composition and layer arrangement in mixed-layer clay minerals. These diagrams can represent short-range and long-range ordered, random, and segregated interstratifications. Mineralogical analyses of illite/smectite from shale cuttings, bentonites, and hydr…
Abstract The reaction of smectite to illite in shale from the COST 1 well in the south Texas Gulf Coast and from altered ash-fall tuffs from the Morrison Formation in New Mexico was investigated using X-ray powder diffraction in conjunction with transmission electron microscopy. In the COST 1 well, the bulk of the det…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransition-metal hydride bond energies: first and second rowJ. L. Elkind and P. B. ArmentroutCite this: Inorg. Chem. 1986, 25, 8, 1078–1080Publication Date (Print):April 1, 1986Publication History Published online1 May 2002Published inissue 1 April 1986https://pubs.acs.org/d…
Thallium(III) oxide is a degenerate n‐type semiconductor which can be electrochemically or photoelectrochemically deposited on conducting or semiconducting substrates. The material is highly conductive, transparent, and electrocatalytic. A photoelectrochemical cell consisting of the n‐silicon/thallium(III) oxide photo…