Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLow-angle neutron scattering study of the lateral extension of chains in lamellar styrene isoprene block copolymersG. Hadziioannou, C. Picot, A. Skoukios, M. L. Ionescu, A. Mathis, R. Duplessix, Y. Gallot, and J. P. LingelserCite this: Macromolecules 1982, 15, 2, 263–267Publ…
Sodium sulfate‐induced hot corrosion of preoxidized B‐1900 and NASA‐TRW VIA has been studied at 900°C with special emphasis placed on the chemical reactions occurring during and immediately after the induction period. Thermogravimetric tests were run for predetermined periods of time after which one set of samples was…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation C. J. Powell, N. E. Erickson, T. Jach; Summary Abstract: Accurate determination of the energies o…
Modern electrical plant and machinery have to be designed to operate at high power densities at minimum cost and optimal efficiency with a high degree of reliability during operation. These stringent requirements necessitate accurate performance prediction at the design stage. As a first and important step in this pro…
Abstract A set of quantitative mineralogical methods was revised and evaluated for routine and rapid mineralogical characterization of clays from southern soils and sediments. The procedures adopted consist of soil dispersion in a pH 9.5 suspension by ultrasonics, centrifuge fractionation to give 300 mg of clay, K‐ an…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRole of inorganic additives in the smoldering combustion of cotton celluloseFred Shafizadeh, Allan G. W. Bradbury, William F. DeGroot, and Thomas W. AanerudCite this: Ind. Eng. Chem. Prod. Res. Dev. 1982, 21, 1, 97–101Publication Date (Print):March 1, 1982Publication History…
The generalized Smoluchowski equation is solved exactly for two particles interacting via a hard core potential in one, two, and three dimensions without the hydrodynamic interaction. From this solution coherent and incoherent intermediate scattering functions, memory functions, and transport coefficients are calculat…
Pyruvate formate-lyase (EC 2.3.1.54) from Streptococcus mutans strain JC2 was purified in an anaerobic glove box, giving a single band on disk and sodium dodecyl sulfate electrophoresis. This enzyme was immediately inactivated by exposure to the air. Enzyme activity was unstable even when stored anaerobically, but the…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Stephen V. Pepper; Effect of electronic structure of the diamond surface on the strength of the d…
A nonconstact technique for reducing the core loss of a grain oriented silicon steel has been developed by the use of Q-switched laser irradiation. Vaporization of the surface layer of the silicon steel by the laser irradiation induced a stress which resulted in a refinement of 180° domain wall spacing. This phenomeno…
Abstract Low‐and high‐density polyethylenes were irradiated by electron beams with dose of 2–50 Mrad and then immersed in aqueous solution of acrylic acid (monomer concentration from 30 to 100 wt %) for 10 min−5 h at a temperature of 25–40°C. The degree of grafting increases with time and levels off. High density poly…
Interaction between the glucose-specific enzyme III (enzyme IIIglc) of the phosphoenolpyruvate:sugar phosphotransferase system and the lactose permease was studied with membrane fragments from an Escherichia coli strain that overproduces the lactose permease. Substrates of the permease markedly and specifically stimul…
Surface core‐level shifts measured using photoemission with synchrotron radiation are reviewed for a variety of transition metals (Ta, W, Ir), rare earth metals (Yb, Sm, Gd, YbAl2), noble metals (Au), and semiconductors (Si, Ge, GaAs). Models of surface shifts are discussed, including the relationships of surface shif…
Abstract Scanning electron microscopy revealed that the organization of the interstitial micaceous mineral in the title sandstones depended on the manner of drying of the specimen. After air- and freeze-drying, the lath-like mineral tended to occur as mats densely packed against the pore walls, whereas after critical-…
Abstract Blends of the polyhydroxy ether of bisphenol‐A, Phenoxy, with the polyesters poly(1,4‐butylene adipate), poly(ethylene adipate), poly(2,2‐dimethyl‐1,3‐propylene succinate), poly(2,2‐dimethyl‐1, 3‐propylene adipate), poly(1,4‐cyclohexane‐dimethanol succinate), and poly(ϵ‐caprolactone), are found to exhibit the…
The passive film on iron in borate buffer has been studied with wide frequency range impedance techniques. Two well‐defined potential domains are observable, i.e. , above and below 1.0V vs. the reversible hydrogen electrode in the same solution (RHE). A discussion of the interpretation of electrochemical impedances an…
The effect of temperature on the structure and dielectric properties of a 52/48 mol % copolymer of vinylidene fluoride and trifluoroethylene has been investigated at temperatures up to 140 C. Undrawn or unpoled specimens contain an intimate mixture of two disordered crystalline phases, both of which undergo a large in…
Abstract In this work, the exchange reaction taking place in molten blends of bisphenol‐A polycarbonate and polybutylene terephthalate was studied. A direct transesterification mechanism catalyzed by titanium residues, present in commercial PBTP, was deduced. The transesterification reaction can be ‐stopped at various…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEster interchange in poly(ethylene terephthalate) and related model copolyestersMichael DroescherCite this: Ind. Eng. Chem. Prod. Res. Dev. 1982, 21, 1, 126–130Publication Date (Print):March 1, 1982Publication History Published online1 May 2002Published inissue 1 March 1982h…
Available data on the absolute magnetization of nickel and iron at room temperature are reviewed, with the aim of finding the best values to use when these materials serve as calibration standards. The field dependence of magnetization is not negligible. Recommended values of magnetization are given at 21 °C and 10 kO…