Materials Literature
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The crystal structure of BiVO4, which has a monoclinic, distorted scheelite structure at ambient conditions, has been determined above the high-pressure transition at 1.6 and 4.3 GPa, and 23°C. At these pressures BiVO4 has the tetragonal scheelite structure, which is also observed at high temperature above 250°C at ro…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT.alpha.-Diazomethyl- and bis(.alpha.-diazomethyl)palladium complexes. Preparation, crystal and molecular structures, and reactionsShunichi Murahashi, Yasuo Kitani, Toru Uno, Takahiro Hosokawa, Kunio Miki, Tadashi Yonezawa, and Nobutami KasaiCite this: Organometallics 1986, 5…
Abstract Die Cluster (μ 3 ‐RC)CoMNiCp 2 (CO) 5 ( 1, 2 , M = Mo, W) entstanden aus (μ 3 ‐RC)Co 2 MCp(CO) 8 mit [CpNiCO] 2 . Aus den gleichen Ausgangsclustern wurden mit K 2 Fe(CO) 4 die Cluster (μ 3 ‐RC)FeCoMCp(CO) 8 H ( 5, 6 , M = Mo, W) erhalten. Mit dem optisch aktiven Substituenten R* = Menthyl bildete sich durch z…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheory of nematic ordering in the melts of macromolecules with different flexibility mechanismsA. R. Khokhlov and A. N. SemenovCite this: Macromolecules 1986, 19, 2, 373–378Publication Date (Print):February 1, 1986Publication History Published online1 May 2002Published iniss…
Abstract A computer model of a single‐pass, rotary‐drum dryer with or without a centerfill flighting section, describes the drying behavior of wood particles within the drum. This part of a two‐part study examines heat and mass transfer, which are shown to be partly dependent on the pattern of particle flow and on ret…
Rabbits were prepared so that a variable capacitance displacement transducer (VCDT) could be used to monitor the eruptive movements of a previously-amputated lower incisor, and a strain gauge transducer mounted on a relay-controlled plate was used to place precisely controlled intermittent forces opposing the erupting…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNitroxyl adducts of copper(II) trihaloacetates. Diamagnetic copper(II) complexes with a novel dimeric structureLeigh C. Porter, Michael H. Dickman, and Robert J. DoedensCite this: Inorg. Chem. 1986, 25, 5, 678–684Publication Date (Print):February 1, 1986Publication History P…
Recent studies on the behavior of nematic liquid crystals (LC’s) in two basic configurations are described. The phase rate of change Δϕ/Δt is studied for the case of parallel aligned nematic cells. It is shown that Δϕ/Δt of approximately 3 rad/msec can be obtained with a 4-μm E-7 LC at λ = 0.63 μm. The optical transmi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdsorption of poly(diallyldimethylammonium chloride) on colloid silica from water and salt solutionEtsuo Kokufuta and Katsufumi TakahashiCite this: Macromolecules 1986, 19, 2, 351–354Publication Date (Print):February 1, 1986Publication History Published online1 May 2002Publi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFacile reduction of pyridines with nickel-aluminum alloyGeorge Lunn and Eric B. SansoneCite this: J. Org. Chem. 1986, 51, 4, 513–517Publication Date (Print):February 1, 1986Publication History Published online1 May 2002Published inissue 1 February 1986https://pubs.acs.org/do…
Crystalline Cd(SPh) 2 is {(μ‐SPh) 6 Cd 4 (μ‐SPh) 4/2 } , an inorganic polymer. It consists of Cd 4 (SPh) 6 cages having adamantane‐like structure, each of which is linked with four surrounding cages by four SPh bridges. The three‐dimen‐ 113 Cd‐NMR spectrum indicates that the polymer forms Cd 10 (SPh) 20 molecules havi…
The performance of copper and mild steel plain heat exchanger tubes and an externally finned mild steel tube was studied under calcium carbonate scaling conditions. Under a constant heat flux for 70-h periods the fouling resistance generally increased linearly with time. The effect of velocity on the rate of scale for…
The photoelectrochemical behavior of n‐type Si electrode in aqueous solutions was investigated. Protection of the electrodes against photocorrosion was achieved by chemically depositing a thin film of manganese oxide on the surface. The electrodes have shown complete stability during oxygen evolution under continuous…
The four pair-wise potentials found in part I (Bacon and Liang 1986) to define model hexagonal-close-packed crystals in equilibrium have been used for the computer simulation of dislocation cores in the absence of external stress. Straight dislocations with Burgers vector b equal to either ⅓〈1120〉 or 1/3〈1123〉 have be…
The diffusion of impurities of low concentration in a surrounding dense medium is studied near the liquid-glass transition point. Within a simplified model we obtain an analytical solution in the long-time or small-frequency regime for a generalized diffusion constant, which is expressed in terms of Bessel functions.…
The pore surface area ( S p ) and grain‐boundary area ( S gb ) were measured during the sintering of undoped and doped (100 ppm MgO) alumina compacts. Since the presence of the additive affects only S gb (raising it at a given value of the density), pinning of the boundaries by solid‐solution drag is the only additive…
Mixtures of ultrafine monoclinic zirconia and aluminum hydroxide were prepared by adding NH 4 OH to hydrolyzed zirconia sols containing varied amounts of aluminum sulfate. The mixtures were heat‐treated at 500° to 1300°C. The relative stability of monoclinic and tetragonal ZrO 2 in these ultrafine particles was studie…
The development of the theory of shielding and antishielding of nuclear quadrupole moments is reported. The various contributions to the Sternheimer shielding and antishielding factors are discussed. Also the history of the different calculational techniques is outlined.
Abstract The effect on packing resulting from the filling of unsaturated polyester resin with fillers and jute fibers has been investigated. The influence of absorbed water on the interfacial interactions involved in the fiber matrix system of the jute reinforced polyester resin also are discussed. An approach to redu…
Abstract The synthesis and characterization of amorphous, aromatic, polyaryl ethers has been investigated. Detailed synthesis procedures are provided. The main thrust of these activities was to synthesize polymers which could serve as castable amorphous matrix resins for carbonfiber composites and which would be highl…