Materials Literature
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The Fermi surface of the molecular conductor (DMe-DCNQI${)}_{2}$Cu (DMe-DCNQI=2,5-dimethyl-N,N'-dicyanoquinonediimine) has been investigated by the de Haas--van Alphen method. Seven different oscillations with heavy cyclotron masses are observed at frequencies lower than 3000 T. These effects arise from the three-dime…
Article Numerical Data and Functional Relationships in Science and technology – New Series. was published on December 1, 1994 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 209, issue 12).
Abstract A ferrous saponite (griffithite) from Griffith Park (California, USA) was treated with solutions of HCl (0.62, 1.25 and 2.5% by weight) at 25°C for 2, 6, 24 and 48 hours. The resulting solids were characterized by XRD, FT-IR spectroscopy, thermal analyses, SEM, TEM and nitrogen adsorption isotherms at 77 K, s…
In conventional energy conversion processes, the fuel combustion is usually highly irreversible, and is thus responsible for the low overall efficiency of the power generation process. The energy conversion efficiency of the combustion process can be improved if immediate contact of fuel and oxygen is prevented and an…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAluminosilicate/Poly(ethylene glycol) Copolymers: A New Class of PolyelectrolytesGlenn C. Rawsky, Tatsuo Fujinami, and D. F. ShriverCite this: Chem. Mater. 1994, 6, 12, 2208–2209Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Published…
A series of 10 cationic gallium(III) complexes with hexadentate bis(salicylaldimine) ligands were synthesized, characterized, radiolabeled with 67Ga, and screened in a rat model to assess their potential as 68Ga radiopharmaceuticals for imaging the heart with positron emission tomography. The tris(salicylaldimine) lig…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpin Frustration in High-Spin Triiron(III) Complexes: An Inelastic Neutron Scattering StudyRoderick D. Cannon, Upali A. Jayasooriya, Ruowen Wu, Samuel K. arapKoske, John A. Stride, Olav F. Nielsen, Ross P. White, Gordon J. Kearley, and Dean SummerfieldCite this: J. Am. Chem.…
Oxide ion conductivity in doped Perovskite‐type oxides was investigated. Among the alkaline earth cations, the addition of Ca for Nd site is effective for increasing the oxide ion conductivity of . Oxide ion conductivity increased anomalously with increases in the amount of Ca, and attained the maximum at in , since t…
The low-frequency dielectric response of the surface stabilized ferroelectric liquid crystal (SSFLC) cells has been investigated. It was found that the dielectric response depends on the type of the smectic layer structure present and the cell thickness. An analytical solution to the equation of motion that describes…
Forming woven fabric composites into complex parts consisting of double curvature shells leads to complex redistribution and reorientation of fibers in the composite. The thermo-mechanical performance of the molded part is highly dependent on this rearrangement. Consequently, prediction of the properties of double cur…
A new approach for the theoretical description of structure formation in acoustic cavitation is developed. The model consists of two coupled partial differential equations describing the spatiotemporal evolution of the sound field amplitude and the bubble concentration. Linear stability analysis and numerical simulati…
Abstract In this study, n-alkyltrimethylammonium ions ([CnH2n+1N(CH3)3]+; n = 12,14,16,18) were intercalated in the interlayer space of layered sodium octosilicate (Na2Si8O17·nH2O) via an ion-exchange reaction. The interlayer space was further modified by grafting of the trimethylsilyl groups via a reaction between a…
We consider tilings of the plane by a lattice of translates of some compact set A such that the union of k suitably chosen tiles is similar to A. Affine and metric equivalence of such ‘k-reptiles’ are defined. We show that for every k ⩾ 2 there is a finite number of equivalence classes for which A is homeomorphic to a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOne Dimensional Inorganic Polymers: Synthesis and Structural Characterization of the Main Group Metal Polymers K2HgSnTe4, (Et4N)2HgSnTe4, (Ph4P)GeInTe4, and RbInTe2Sandeep S. Dhingra and Robert C. HaushalterCite this: Chem. Mater. 1994, 6, 12, 2376–2381Publication Date (Prin…
The serine protease (SSP) from a Gram-negative organism, Serratia marcescens, is excreted even from Escherichia coli. The protease is synthesized as a 1045-amino-acid precursor (preproSSP) composed of three functional portions, a typical NH2-terminal signal peptide of 27 amino acids, the mature protease part of 618 am…
The effect of a cryoprotectant (glycerol) upon the mosaicity of flash-frozen T-state glycogen phosphorylase b crystals has been investigated. Glycerol concentration in a buffered solution was varied between 0 and 70% v/v. The results show that there is a well defined optimum in glycerol concentration giving lowest mos…
The brittle‐to‐ductile transition (BDT) of Precracked sapphire in four‐point bending was studied as a function of orientation and strain rate from room temperature to 1500°C. Plastic deformatiom of sapphire occurs via basal and prismatic slip during loading at high temperature (above 1030–1100°C, depending on orientat…
It is well established that, within families of homologous enzymes, amino acid residues that are involved in the chemistry of the reaction are highly conserved. To determine if residues at the subunit interface of oligomeric enzymes with shared active sites are also conserved, comparative analysis of five enzyme famil…
Abstract Two new phenylethynyl endcapping compounds, 3‐ and 4‐amino‐4′‐phenylethynylbenzophenone, were synthesized and used to terminate imide oligomers from 3,4′‐oxydianiline and 4,4′‐oxydiphthalic anhydride at a calculated molecular weight of 9000 g/mol and from 3,4′‐oxydianiline (0.85 mol), 1,3‐bis (3‐aminophenoxy)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction Kinetics of Epoxy/Amine Model Systems. The Effect of Electrophilicity of Amine MoleculeJovan Mijovic and Jony WijayaCite this: Macromolecules 1994, 27, 26, 7589–7600Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Published inis…