Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature dependence of the quantum yields for the photoanation of Ru(bpy)2L22+ complexesDavid V. Pinnick and Bill DurhamCite this: Inorg. Chem. 1984, 23, 24, 3841–3842Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue…
We devised a positive selection procedure for bacterial mutants incapable of producing acid from sugars by fermentation. The method relied on the production of elemental bromine from a mixture of bromide and bromate under acidic conditions. When wild-type Escherichia coli cells were plated on media containing a fermen…
Anodic films on iron formed in a forced convection system in the transpassive potential region in nitrate electrolytes at current densities up to 40 A/cm 2 have been studied by in situ coulometry and ex situ Auger electron spectroscopy (AES) and angle‐resolved x‐ray photoelectron spectroscopy (XPS). Qualitatively simi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamics of spin-state interconversion and cooperativity for ferric spin-crossover complexes in the solid state. 2. Perturbations of the fast spin-flipping N4O2 complex [Fe(SalAPA)2]ClO4Wayne D. Federer and David N. HendricksonCite this: Inorg. Chem. 1984, 23, 24, 3870–3877P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhytochemical and Biological Screening of Saudi Medicinal Plants, Part 6. Isolation of 2α-Hydroxyalantolactone the Antileukemic Principle of Francoeuria crispaMohammed A. Al-Yahya, Saad Khafagy, Amir Shihata, John F. Kozlowski, Mikhail D. Antoun, and John M. CassadyCite this…
Abstract Implications for cord adhesion from this study are as follows: 1) In the low-adhesion compounds containing low cobalt naphthenate and sulfur levels, adhesion increases with decreasing cobalt naphthenate:sulfur ratio, at a given amount of cobalt naphthenate. 2) Under mild curing condition (160°C, 20 min), high…
A theoretical model is developed to describe the velocity of fragments generated when a gas-pressurized vessel disintegrates. The predictions are compared with new and existing experimental data for spherical and cylindrical vessels and are shown to be an improvement over the widely used empirical correlation develope…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew organoiron synthons. cis- and trans-Vinylene dication equivalentsMarianne Marsi and Myron RosenblumCite this: J. Am. Chem. Soc. 1984, 106, 23, 7264–7266Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 November 198…
Boron films of 0.1–1.5 μm thickness have been prepared on sapphire, silicon, and tantalum as substrates by the pyrolysis of decaborane in the molecular flow region (≦10 −4 torr) and in a temperature range of 350°–1200°C. It is found that the deposition rate of the boron films is proportional to the decaborane partial…
A method for analyzing a magnetic damper (eddy current brake) consisting of a cylindrical magnet and a plate conductor of arbitrary shape is considered. Since the magnetic flux is a function of the position, the analytical solution to obtain the eddy current, braking force, and damping coefficient is obtained by divid…
Abstract Photocrosslinkable poly(2‐vinyloxyethyl cinnamate)'s with substituents in para position of cinnamoyl moieties were prepared cationically. Polymerizability of the monomers was markedly governed by the substituent and the glass transition temperatures of the polymers varied in the range of about 0 to 72°C. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular stereochemistry of low-spin five-coordinate phenyl(meso-tetraphenylporphyrinato)iron(III)Pascal DoppeltCite this: Inorg. Chem. 1984, 23, 24, 4009–4011Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 November…
A sintered apatite with enhanced strength was achieved by incorporating C a O‐P 2 O 5 /metal oxide frit. When B a O or Al 2 0 3 were partially substituted for C a O in the frit composition, the sintered product was stronger because grain growth was retarded. The average bending strength of the strongest sintered apati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDivalent lanthanoid synthesis in liquid ammonia. I. The synthesis and x-ray crystal structure of (C5Me5)2Yb(NH3)(THF)Andrea L. Wayda, James L. Dye, and Robin D. RogersCite this: Organometallics 1984, 3, 11, 1605–1610Publication Date (Print):November 1, 1984Publication Histor…
Abstract A study using hot‐stage microscopy and differential scanning calorimetry in assessing the ability of a number of substrates to nucleate transcrystalline growth in polypropylene is reported. Surface energy, chemical composition, crystal morphology, and moisture content of the substrate are discounted as being…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of polyester-polyether block copolymer with controlled chain length from β-lactone and epoxide by aluminum porphyrin catalystTomokazu Yasuda, Takuzo Aida, and Shohei InoueCite this: Macromolecules 1984, 17, 11, 2217–2222Publication Date (Print):November 1, 1984Publ…
Spin-lattice (T1) and spin–spin (T2) relaxation times of the deuterons in supercooled D2O at 225 MPa, measured at two frequencies: 55.54 and 39.14 MHz down to 188 K are reported. The results show that T1 and T2 become frequency dependent in supercooled liquid water under high hydrostatic pressure at temperatures below…
Abstract Four closely related polyesters, with aromatic ester triads and decamethylene spacers, were prepared and characterized for their thermotropic liquid crystalline properties. Two of the polymers, which were based on linear biphenols, formed stable nematic phases, whereas one of the two based on nonlinear biphen…
Alkaline hydrolysis has been used for about 30 years as a procedure for modifying the physical properties of polyester fabrics. Despite the length of time the reaction has been-known, its kinetics and mechanism are not well understood. Studies conducted in our laboratory indicate that the hydrolysis of polyester occur…
Single-crystal copper specimens of various orientations have been cleaned, oxidized and examined by reflection high-energy electron diffraction in a XJHV chamber and then transferred, under vacuum, to a transmission electron microscope where the shape and orientation of the individual oxide islands could be examined.…