Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical ring-opening reaction of indolinespiropyrans studied by subpicosecond transient absorptionNiko P. Ernsting and Thomas Arthen-EngelandCite this: J. Phys. Chem. 1991, 95, 14, 5502–5509Publication Date (Print):July 1, 1991Publication History Published online1 May…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTScanning tunneling microscopy studies of carbon-oxygen reactions on highly oriented pyrolytic graphiteHsiangpin Chang and Allen J. BardCite this: J. Am. Chem. Soc. 1991, 113, 15, 5588–5596Publication Date (Print):July 1, 1991Publication History Published online1 May 2002Publ…
A thermal description of the electron-ion interaction in the cooling phase of the displacement cascade in metals is given. Differential equations governing the transfer of heat between the two systems are derived and solved numerically using physically reasonable parameters for cascades in Cu and Ni. Large differences…
The Atlas of Crystal Structure Types for Intermetallic Phases offers you pictorial detail, clearly illustratedThe Atlas is the perfect reference to keep on your shelf beside the Second Edition of Pearson's Handbook. For each structure type, you can quickly find for all atoms (point sets): A list of all coordination at…
ADVERTISEMENT RETURN TO ISSUEPREVArticleFacile syntheses of new incompletely condensed polyhedral oligosilsesquioxanes: [(c-C5H9)7Si7O9(OH)3], [(c-C7H13)7Si7O9(OH)3], and [(c-C7H13)6Si6O7(OH)4]Frank J. Feher, Theodore A. Budzichowski, Rusty L. Blanski, Keith J. Weller, and Joseph W. ZillerCite this: Organometallics 19…
Six designed mutants of T4 lysozyme were created in an attempt to create putative salt bridges on the surface of the protein. The first three of the mutants, T115E (Thr 115 to Glu), Q123E, and N144E, were designed to introduce a new charged side chain close to one or more existing charged groups of the opposite sign o…
The effects of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) on ATP levels in different areas of mouse brain were studied after rapid fixation of cerebral tissue in situ by microwave irradiation. ATP levels in the striatum, ventral mesencephalon, and cerebellum of untreated C57BL/6 mice killed by microwave irrad…
Experimental and theoretical studies of the brittle-ductile transition (BDT) of precracked single crystals of silicon are discussed. For a given strain-rate the temperature T c at which the BDT occurs varies by up to 250 K for similar materials but different test geometries. However, for a given material and geometry…
Abstract We have used internally‐consistent thermodynamic data to present calculated phase equilibria for the system Na 2 O‐CaO‐MgO‐Al 2 O 3 ‐SiO 2 ‐H 2 O (NCMASH), in the range 0–500° C and 0.1–10 kbar, involving the phases anorthite, glaucophane, grossular, heulandite, jadeite, laumontite, lawsonite, paragonite, pre…
Polyethylene oxide (PEO) of molecular weights 5,000, 10,000, 18,500, and 100,000 g/mol was covalently grafted to surfaces of otherwise cell adhesive polyethylene terephthalate (PET) films. Analysis of these surfaces by measurement of contact angles and ESCA verified the presence of the grafted PEO. Protein adsorption…
Abstract The γ-phase crystal of 2-(4′-nitrophenyl)-4,4,5,5-tetramethyl-4 5-dihydro-1H−imidazol-1-oxy-3-N-oxide is shown to become a bulk ferromagnet below about 0.65 K from the measurements of magnetization of magnetic susceptibility and heat capacity.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConceptual aspects of structure-property correlations and electronic instabilities, with applications to low-dimensional transition-metal oxidesEnric. Canadell and Myung Hwan. WhangboCite this: Chem. Rev. 1991, 91, 5, 965–1034Publication Date (Print):July 1, 1991Publication…
KatF is required for the expression of some 32 carbon starvation proteins in Escherichia coli including 6 previously identified as Pex. Mutants with the katF gene survive carbon and nitrogen starvation poorly. Many of the KatF-regulated starvation proteins are common to those induced by other stresses, and the mutant…
Microporous and mesoporous Si layers contain a very large surface area that affects both their optical and electrical properties. Secondary ion mass spectroscopy (SIMS) analysis is used for the first time to simultaneously monitor all the major impurities on that surface. SIMS data on a microporous layer demonstrate t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic properties of nitrogen-doped graphite flakesDong Pyo Kim, C. L. Lin, T. Mihalisin, P. Heiney, and M. M. LabesCite this: Chem. Mater. 1991, 3, 4, 686–692Publication Date (Print):July 1, 1991Publication History Published online1 May 2002Published inissue 1 July 1991…
The microwave conductivity of a new material, the polymer poly-p-phenylene-benzobis-thiazole (PBT) made conductive by ion-implantation doping with iodine, is measured at 9.89 GHz as a function of temperature using the cavity perturbation technique applicable to thin films of arbitrary shape. The DC and microwave condu…
The biosynthesis of methionine in Escherichia coli is under complex regulation. The repression of the biosynthetic pathway by methionine is mediated by a repressor protein (MetJ protein) and S-adenosyl-methionine which functions as a corepressor for the MetJ protein. Recently, a new regulatory locus, metR, has been id…
An experimental review on electric field effects in blue phases is presented. Electric fields have a profound effect on these phases which appear in chiral liquid crystals. In addition to producing elec-trostrictive effects on blue phase lattices, they also cause new field induced phases—tetragonal BPX, hexagonal BPH3…
Molecular-dynamics simulations of 500 particles have been performed to study the icosahedral order and the defects in the supercooled liquid and glass states of metallic ${\mathrm{Mg}}_{3}$${\mathrm{Ca}}_{7}$. Not only are Frank-Kasper polyhedra and Bernal ``hole'' polyhedra detected, but also a variety of defective i…
Thin polycrystalline films of VO2 and V2O3 were deposited on a variety of substrates using a sol-gel process. The orientation, microstructure, optical constants, and optical and electrical switching behavior are presented. These films exhibited sharp optical switching behavior even on an amorphous substrate such as fu…