Materials Literature
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This paper presents an arc-furnace model consisting of nonlinear, time varying resistance where time-variation laws of arc length are considered. One consists of a periodic, sinusoidal law, the other of a band-limited white-noise law. The arc-furnace model is implemented by EMTP, referring to actual electric-plant con…
All articles of this category An improved and efficient synthesis of tetrathiafulvalene-2,3,6,7-tetrathiolate (TTFTT) 5 is reported. TTF-tetrathiolate 5 was generated from 2,3,6,7-tetrakis(2′-cyanoethylthio)tetrathiafulvalene ( 11 ) under basic conditions at room temperature and was subsequently reacted with a range o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysical Properties and Biodegradability of Microbial Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)Eihaku Shimamura, Kenichi Kasuya, Genta Kobayashi, Takeshi Shiotani, Yu Shima, and Yoshiharu DoiCite this: Macromolecules 1994, 27, 3, 878–880Publication Date (Print):January 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRigid rod conjugated polymers for nonlinear optics: 1. Characterization and linear optical properties of poly(aryleneethynylene) derivativesM. Moroni, J. Le Moigne, and S. LuzzatiCite this: Macromolecules 1994, 27, 2, 562–571Publication Date (Print):January 1, 1994Publicatio…
Diamond, the sp3-bonded allotrope of carbon, has long held a special place in the hearts and minds both of scientists and the public at large. For the latter, the word diamond may conjure up images of 57 facetted brilliant gem stones, Amsterdam or mines
An approach for the modification of electrode surfaces with thin films composed of polyoxometallate anions and large water‐soluble cationic species is described. In the procedure, a ca . monolayer of the iso‐ or heteropolyanion is first adsorbed onto the electrode surface. By immersing the resulting system into a solu…
Article Electrochemical Behaviour of Some Mechanically Alloyed Mg — Ni-Based Amorphous Hydrogen Storage Alloys* was published on January 1, 1994 in the journal Zeitschrift für Physikalische Chemie (volume 183, issue 1-2).
Zinc-containing neurons are cells that sequester zinc in their presynaptic vesicles and release it in a calcium- and impulse-dependent manner. The zinc-containing neurons are a subclass of the glutaminergic neurons: all known zinc-containing pathways are also glutaminergic pathways. With a few exceptions, zinc-contain…
Bulk properties surface properties nitrogen in diamond Ni, Si, H and O in diamond radiation damage ion implantation and diffusion decay times of luminescence and laser action carbon isotope effects donors, acceptors and electrical conductivity technology of surfaces metastable growth high T, high P synthesis.
T. Jørgensen, T. K. Hansen and J. Becher, Chem. Soc. Rev., 1994, 23, 41 DOI: 10.1039/CS9942300041
Knowledge, both from the three-dimensional structures of homologous proteins and from the general analysis of protein structure, is of value in modeling a protein of known sequence but unknown structure. While many models are still constructed at least in part by manual methods on graphics devices, automated procedure…
ADVERTISEMENT RETURN TO ISSUEPREVarticleNEXTSynthesis of a doubly interlocked [2]-catenaneJean Francois Nierengarten, Christiane O. Dietrich-Buchecker, and Jean Pierre SauvageCite this: J. Am. Chem. Soc. 1994, 116, 1, 375–376Publication Date (Print):January 1, 1994Publication History Published online1 January 1994Publ…
The complexation of cis or trans meso-dipyridyl porphyrins by cis or trans substituted metal ions (PdII, PtII) of square planar coordination geometry leads to the self-assembly of multiporphyrin arrays of square architecture.
Adsorption isotherms of argon, nitrogen and oxygen have been determined at 77 K on a sample of MCM-41, a novel form of aluminosilicate. All the isotherms are Type IV in the IUPAC classification. The argon and oxygen isotherms exhibit well defined hysteresis loops, whereas the nitrogen isotherm is completely reversible…
A new version of the Rietveld-refinement program RIETAN has been developed for the analysis of angle-dispersive X-ray and neutron powder diffraction data. It has several features such as the modified pseudo-Voigt function of Thompson, Cox and Hastings, representation of peak asymmetry by a multi-term Simpson's rule in…
Organic Conductors: An Overview. Basic Physical Concepts of Organic Conductors. Molecular Design of Organic Conductors. Chemical Synthesis and Crystal Growth Techniques. Organic Conductors: The Crystallographic Approach. Optical Properties. Magnetic, ESR, and NMR Properties. Organic Semiconductors. Organic Metals. Org…
The stabilities of Pt/Ti bilayer metallizations in an oxidizing atmosphere have been investigated with several thicknesses of interfacial Ti-bonding layers. Reactions in the Pt/Ti/SiO2/Si interface were examined as a function of various annealing conditions in the temperature range 200–800 °C by using Rutherford backs…
Substitution of vanadium into the framework of mesoporous MCM-41 molecular sieves has been achieved; these materials were found to be very efficient catalysts for the selective oxidation of large organic molecules using hydrogen peroxide.
A new way to tailor the crystal chemistry of inorganic solids involves molecular recongnition between two‐dimensional organic templates and embryonic inorganic aggregates. Langmuir monolayers adopted as model surfaces offer opportunities for molecular engineering of the template. The Figure shows one example of orient…
Partial table of contents: The Vision of Diamond as an Engineered Material (M. Yoder). Summary of Research on Diamond Growth from the Gas Phase in Russia (D. Fedoseev). Development and Status of Diamondlike Carbon (A. Grill & B. Meyerson). Vapor Phase Diagnostics in Diamond CVD (H. Thorsheim & J. Butler). Physical, Ch…