Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDevelopment of miscible blends of polyamide-6 and manganese sulfonated polystyrene using specific interactionsXinya Lu and R. A. WeissCite this: Macromolecules 1991, 24, 15, 4381–4385Publication Date (Print):July 1, 1991Publication History Published online1 May 2002Published…
We report on the design and fabrication of fully 2-D surface relief diffraction elements that can split a single collimated beam into many beams in an arbitrary intensity distribution. These splitters were designed by computer using simulated annealing, and made into phase gratings by electron-beam lithography followe…
Nonstationary and stationary concentration profiles of vacancies in a grain boundary are calculated for the case of electromigration and various conditions of vacancy formation and annihilation. If supersaturation of vacancies is assumed for void formation, current densities necessary for voiding have to be larger tha…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular recognition. 16. Molecular recognition of quinones: two-point hydrogen-bonding strategy for the construction of face-to-face porphyrin-quinone architecturesYasuhiro Aoyama, Masumi Asakawa, Yuichi Matsui, and Hisanobu OgoshiCite this: J. Am. Chem. Soc. 1991, 113, 16…
In the anaerobic, thermophilic, cellulolytic bacterium Clostridium thermocellum, efficient solubilization of the insoluble cellulose substrate is accomplished largely through the action of a cellulose-binding multienzyme complex, the cellulosome. A major cellobiohydrolase activity from the cellulosome has been traced…
Previous observations suggested that pNcollagen III, the partially processed form of type III procollagen, coats fibrils of collagen I and thereby helps regulate the diameter of fibrils formed by collagen I. The previous observations, however, did not exclude the possibility that pNcollagen III was deposited on prefor…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTType V collagen in trout (Salmo gairdneri) muscle and its solubility change during chilled storage of muscleKenji Sato, Chiho Ohashi, Kozo Ohtsuki, and Makoto KawabataCite this: J. Agric. Food Chem. 1991, 39, 7, 1222–1225Publication Date (Print):July 1, 1991Publication Histo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIn situ infrared spectroscopy at single-crystal metal electrodes: an emerging link between electrochemical and ultrahigh-vacuum surface scienceSi Chung Chang and Michael J. WeaverCite this: J. Phys. Chem. 1991, 95, 14, 5391–5400Publication Date (Print):July 1, 1991Publicatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-assembled multilayers of .omega.-mercaptoalkanoic acids: selective ionic interactionsStephen D. Evans, Abraham Ulman, Kim E. Goppert-Berarducci, and Louis J. GerenserCite this: J. Am. Chem. Soc. 1991, 113, 15, 5866–5868Publication Date (Print):July 1, 1991Publication Hi…
The three-dimensional crystal structure of the complex between the Fab from the monoclonal anti-lysozyme antibody D1.3 and the antigen, hen egg white lysozyme, has been refined by crystallographic techniques using x-ray intensity data to 2.5-A resolution. The antibody contacts the antigen with residues from all its co…
Precursors for the preparation of carbon nitride were selected from a number of relatively high nitrogen content organic materials. The precursors were pyrolyzed in a closed system at 700°C under 225 MPa. The resulting residues showed little nitrogen loss, but were amorphous with relatively low densities. Raman spectr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesign of enzyme inhibitors using iterative protein crystallographic analysisKrzysztof Appelt, Russell J. Bacquet, Charlotte A. Bartlett, Carol L. J. Booth, Stephan T. Freer, Mary Ann M. Fuhry, Michael R. Gehring, Steven M. Herrmann, Eleanor F. Howland, and Cite this: J. Med…
Evaluations were made of anti-blocking agents with two linear low density polyethylene (LLDPE) films. Diatomaceous earth (D-E) was com pared to untreated talc and coated talc regarding effectiveness as an anti-block agent and their interaction with fluorocarbon elastomer processing aids (PPA). Data showed that treated…
ABSTRACT Cooling lethalities were determined using Ball's formula method and other lethality evaluation equations for f c from 10–120 min, j c of 0.25–2.21, L/D geometry values of 0.25–2.0, and the difference between final heating and cooling temperatures of 72.2–111.1°C. For j c &lt 1.35 the Ball method overestim…
Reflection and transmission of electronmagnetic waves at a chiral-dielectric interface are analysed for normal and oblique incidence and for critical angles. Graphs of the reflection and transmission coefficients are given for various parameters of the two media as a function of the angle of incidence. The results of…
A real time spectroscopic ellipsometry (RTSE) investigation is reported for comprehensive optical characterization of a thin film/substrate system, vacuum-deposited hydrogenated amorphous (diamondlike) carbon on tantalum. Precision RTSE measurements were carried out from 1.6 to 4.0 eV with a time resolution of 3 s and…
Recent developments of the innovative LDF™ thermoplastic composites technology are reviewed with emphasis on discussion of the technology's fundamental basis and composites' property performance. The proprietary technology employs reinforce ment of long, aligned discontinuous fibers including carbon, Kevlar® or glass.…
An optimized set of thermodynamic functions to describe the Cu-Mg system has been obtained by a computer-operated least squares method. The experimental values taken from the literature and fitted in the calculation include phase diagram data, enthalpies of mixing of the liquid, and partial Gibbs energies of the liqui…
Research News: Oriented polymeric structures can possess anisotropic optical, electrical, and thermo‐mechanical properties which make them of interest for application in the production of polarizers, waveguides, optical filters, and wave plates. One method of producing such structures, the photopolymerization of self…
Abstract Raman scattering measurements are reported for amorphous selenium. It is found that the molecular structure of a‐Se on the scale of medium‐range order differs from the structure of most inorganic glasses. A laser‐induced glass‐crystalline transition is also studied. The experimental results suggest the existe…