Materials Literature
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Parallel biochemical and crystallographic studies have been carried out on the protein concanavalin B from Jack Bean (Canavalis ensiformis). The studies show the protein to be a monomer of 33,000 daltons with unexceptional amino acid composition and no covalently bound carbohydrate. The molecule contains a single, fir…
Today's challenges in the design of power transformers necessitate, among other things, very accurate calculation of the performance parameters of the transformer (such as losses, impedance, shielding, s.c. forces, etc.), reduction of load losses, and preventing overheating and local hot spots. Presented in this paper…
Stress and heat induced demagnetization of Co-Cr films with perpendicular magnetic anisotropy deposited on 50 μm thick polyimide base films has been studied. The loss in remanent magnetization Mrwas detected with a vibrating sample magnetometer VSM after the film had been stressed or heated. Mrdecreases monotonically…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRheooptical investigation of the transition behavior of polyphosphazenesT. P. Russell, D. P. Anderson, R. S. Stein, C. R. Desper, J. J. Beres, and N. S. SchneiderCite this: Macromolecules 1984, 17, 9, 1795–1799Publication Date (Print):September 1, 1984Publication History Pub…
Abstract Diarylnitroxyl radicals and their reduction products, the diaryl hydroxylamines are effective anti-fatigue agents for rubber, confirming the previously proposed mechanism of action of the diaryamincs. The nitroxyls are reduced by sulfur species formed during the vulcanization reaction to a mixture of hydroxyl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMaterial characterization of structural adhesives in the lap shear mode. 1. The effects of rateErol Sancaktar, Steven C. Schenck, and Shrikant PadgilwarCite this: Ind. Eng. Chem. Prod. Res. Dev. 1984, 23, 3, 426–434Publication Date (Print):September 1, 1984Publication Histor…
The first twenty years of microwave radar development was done entirely without the benefit of ferrite devices. The first experimental microwave ferrite device was demonstrated in 1949. Ten more years of research and development on the devices was required before significant performance was achieved and large scale co…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and structure of a cobalt(I) meso-tetraphenylporphyrin complex, [CoI(TPP)][K.cntnd.222]4Cl3.H2OP. Doppelt, J. Fischer, and R. WeissCite this: Inorg. Chem. 1984, 23, 19, 2958–2962Publication Date (Print):September 1, 1984Publication History Published online1 May 200…
The authors performed 169 Tm Mossbauer spectroscopy on the cubic Laves-phase compounds TmNi 2 , TmRh 2 and TmIr 2 in the temperature range 2-300K and found well resolved quadrupolar splitting at low temperature. In cubic compounds this feature is uncommon and they explain it as indicating the presence of a static or d…
Abstract The effect of absorbed doses of ionizing radiation up to 2MGy in the presence of air on the melting behavior of high‐ and low‐density polyethylene was analyzed from data obtained by differential scanning calorimetry. Thermal measurements were made during the first melting after irradiation. The first melting…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBond energies of the ceslum halides determined by collision-induced dissociationE. K. Parks and S. WexlerCite this: J. Phys. Chem. 1984, 88, 20, 4492–4494Publication Date (Print):September 1, 1984Publication History Published online1 May 2002Published inissue 1 September 198…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamic light scattering of poly(L-lysine) hydrobromide in aqueous solutionsNorio Nemoto, Hitoshi Matsuda, Yoshisuke Tsunashima, and Michio KurataCite this: Macromolecules 1984, 17, 9, 1731–1735Publication Date (Print):September 1, 1984Publication History Published online1 M…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPenstemonoside and Other Iridoids from Castilleja rhexifolia. Conversion of Penstemonoside to the Pyridine Monoterpene Alkaloid RhexifolineMark R. Roby and Frank R. StermitzCite this: J. Nat. Prod. 1984, 47, 5, 854–857Publication Date (Print):September 1, 1984Publication His…
Abstract The studies described in this papier lead to certain conclusions. The crosslinking reaction of halobutyl with zinc oxide does not give rise to ether crosslinks. All the evidence indicates that the chemistry involves the formation of carbon-carbon bonds by an alkylation type chemistry. The dehydrohalogenation…
Line pipe steels with excellent resistance to wet sour gas are urgently needed because of increased use of sour gas reserves that have a higher hydrogen sulfide concentration, and because of higher operating pressures. The authors conducted extensive analyses to explore the effects of metallurgical factors on the resi…
Abstract The powder diffractograms of twenty wet chemically analysed samples in the isomorphous triphylite-lithiophilite series and five synthesized members with Fe/(Fe + Mn) = 1, 0.75, 0.50, 0.25, and 0.0, were recorded. Their unit cell dimensions were accurately refined in order to find a reliable method for semi-qu…
The photoelectrochemical properties of were studied in aqueous electrolytes. The onset potential of the anodic photocurrent in steady state was found to be about 1V more anodic than that of the photocurrent measured by the lock‐in method (−2V vs. SCE). This discrepancy was ascribed to the presence of transient photocu…
Organic photochromic compounds await major commercial exploitation. The main characteristics of these materials are outlined and their applications are discussed. These include: optical data recording, optical data processing, optical waveguide components, inks for security applications, displays, variable density fil…
The domain wall stabilization caused by anisotropy induced during annealing has been studied in amorphous ribbons. It was found from domain observation that the regions where there existed domain walls during annealing tend to become nuclei of reverse domains as well as pinning sites of domain walls. The increased wal…
In the study of transient or steady-state eddy current effects, a general diffusion equation derived from Maxwell's equations is solved by a classical finite element method for the spatial problem with time discretization. The moving part of the system is taken into account by a mesh distortion where the mesh points a…