Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEthylene analogs of tetrathiafulvalene and tetraselenafulvalene: new donors for organic metalsToyonari Sugimoto, Hiroshi Awaji, Iwao Sugimoto, Yohji Misaki, Tokuzo Kawase, Shigeo Yoneda, Zenichi Yoshida, Tsunetoshi Kobayashi, and Hiroyuki AnzaiCite this: Chem. Mater. 1989, 1…
At the beginning we present a review of the historical development of first observations of domain structures in ferroelectric and ferroelastic crystals with a SEM. A theory of the charging mechanism of an insulating sample bombarded by an electron beam gives an interpretation of experimental observations of ferroelec…
Abstract Previous attempts to prepare monodisperse styrene/sodium styrene sulfonate copolymer latexes by batch, seeded, and semicontinuous emulsion polymerization were unsuccessful at high concentrations of the functional comonomer. Broad, and sometimes bimodal, size distributions, and large amounts of water soluble h…
The effects of various soil properties on ammonia (NH3) volatilization from soils treated with urea were studied by measuring the NH3 evolved when 20 soils selected to obtain a wide range in properties were incubated at ‐0.034 mPa soil moisture potential and 30°C for 10 days after treatment with urea. The nitrogen (N)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConstant-composition study of dicalcium phosphate dihydrate crystal growth in the presence of poly(acrylic acids)Zahid AmjadCite this: Langmuir 1989, 5, 5, 1222–1225Publication Date (Print):September 1, 1989Publication History Published online1 May 2002Published inissue 1 Se…
The understory diatom species of Epithemia made up nearly 55% of the diet of the freshwater limpet Ferrissia fragilis, while these same diatom species made up <20% of the epiphyton assemblage on Nuphar leaves occupied by limpets. Furthermore, the larger, upright overstory diatom species had relatively low electivity v…
The in vitro fibril assembly of calf skin collagen was examined as a function of ionic strength and temperature. In a 0.03 M NaPi, pH 7.0, buffer, fibril assembly required a minimum critical concentration of collagen. At nearly physiological ionic strengths and temperatures, the critical concentration was less than 1…
<div class="htmlview paragraph">Decreasing the level of NOx and particulate matter simultaneously from the exhaust of diesel engines has been demonstrated using newly developed catalyst compositions. Ignition temperatures below 400°C were observed in laboratory tests using catalyzed diesel particulate traps moun…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of hydrolysis of iodine monochloride measured by the pulsed-accelerated-flow methodYi Lai Wang, Julius C. Nagy, and Dale W. MargerumCite this: J. Am. Chem. Soc. 1989, 111, 20, 7838–7844Publication Date (Print):September 1, 1989Publication History Published online1 M…
1,10,-Phenanthroline (Phen) has been examined as a corrosion inhibitor for mild steel in 1 N H2SO4 acid solution by weight-loss and gasometric methods. Studies have also been made in 1 N HCl solution to compare the efficiency of the inhibitor in both acids. Activation energy in the presence and in the absence of the i…
A large number of high‐temperature experiments involving binary mixtures of alumina and aluminum carbide (Al 4 C 3 ) were performed to clarify the behavior of the aluminum oxycarbide Al 2 OC. It is first shown from heat treatments on the molar composition 55Al 2 O 3 ·45 Al 4 C 3 that, in conditions of stable equilibri…
Liquid crystal polarizers are prepared by using a common linear polarizer, a nematic liquid crystal and PVA-coated glass substrates. The surface of one substrate is treated for unidirectional molecular orientation and the other substrate is treated for concentrically circular molecular orientation. The liquid crystal…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrigin of the long period and crystallinity in quenched semicrystalline polymers. 1E. Robelin-Souffache and J. RaultCite this: Macromolecules 1989, 22, 9, 3581–3594Publication Date (Print):September 1, 1989Publication History Published online1 May 2002Published inissue 1 Sep…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural, magnetic, and electrochemical studies on macrocyclic dicopper(II) complexes with varying chelate ring sizeSanat K. Mandal, Laurence K. Thompson, Michael J. Newlands, and Eric J. GabeCite this: Inorg. Chem. 1989, 28, 19, 3707–3713Publication Date (Print):September…
ABSTRACT Thermal process calculations generally involve first order reaction kinetics which have been commonly described by the thermal death time (TDT) method in the field of food science but would normally be evaluated by the more conventional Arrhenius approach in most other fields. The relationship between these t…
Selective cation exchange in tobermorites with three levels of Al 3+ and Na + substitution for Si 4+ has been investigated. The cation exchange selectivity for a tobermorite with 2 mol% Al 3+ and 0 mol% Na + substitution increased as follows: Mg 2+ > Ba 2+ > Sr 2+ . Cation exchange in the above tobermorite is po…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of lanthanum on the surface structure and carbon monoxide hydrogenation activity of supported cobalt catalystsJeffrey S. Ledford, Marwan Houalla, Andrew Proctor, David M. Hercules, and Leonidas PetrakisCite this: J. Phys. Chem. 1989, 93, 18, 6770–6777Publication Da…
Slip casting is one of the most common forming techniques used in the fabrication of ceramics. To obtain successful casting results, one need first to fully deagglomerate the ceramic powders and get concentrated slurries with good rheological properties. In this work, the rheological properties of concentrated alumina…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature-heat diagrams for complex columns. 3. Underwood's method for the Petlyuk configurationNeil A. Carlberg and Arthur W. WesterbergCite this: Ind. Eng. Chem. Res. 1989, 28, 9, 1386–1397Publication Date (Print):September 1, 1989Publication History Published online1 Ma…
Dislocations and stacking faults have been observed for the first time in a decagonal quasicrystalline structure. The lattice defects found in the decagonal phase of A165Cu20Co15 give an electron diffraction contrast similar to that found in normal-crystalline materials.