Materials Literature
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Thermal desorption studies and electrical conductivity measurements have been used to investigate the solubility of hydrogen defects in barium titanate ceramics in oxidizing atmospheres. Hydrogen is found to dissolve in the perovskite lattice of undoped and acceptor‐doped BaTiO 3 by the formation of hydroxide ions on…
Dislocation wall and cell structures in deformed metal crystals are reviewed briefly, emphasizing the heterogeneity of the dislocation distribution. The evolution of the dislocation substructure is discussed in terms of work hardening and dynamic recovery. The main part of the paper deals with the so-called composite…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic analysis of phase-separation kinetics in model polyurethanesHan Sup Lee, Ying Kang Wang, William John MacKnight, and Shaw Ling HsuCite this: Macromolecules 1988, 21, 1, 270–273Publication Date (Print):January 1, 1988Publication History Published online1 May 200…
Abstract Precipitation is a rapid solidification. As a rule, it applies to substances which are sparingly soluble and is coupled with a chemical reaction or with a salting out process. The chemical engineer has to ensure that the product obtained has a constant and preferably coarse size distribution. This contributio…
Preface. About the author. Introduction. Geometry of areas. Kinematics and statics of rigid systems. Determination of constraint reactions. Internal beam reactions. Statically determinate beam systems. Analysis of strain and stress. Theory of elasticity. The Saint Venant problem. Beams and plates in flexure. Finite el…
This review article, based on a lecture delivered in Madras in 1985, is an account of the author's experience in the working out of the molecular structure and conformation of the collagen triple-helix over the years 1952-78. It starts with the first proposal of the correct triple-helix in 1954, but with three residue…
Reaction kinetics in a coarse equimolar powder mixture were slow enough to allow for the different stages to be identified, notably in the lower and higher temperature ranges, respectively. In the former ( T ≤ 1600 K), Al 2 TiO 5 nucleation was hindered by the strain energy contribution to the overall driving force. T…
The present study was undertaken to elucidate the mechanism of in vitro cell killing induced by 1.0 MHz continuous wave ultrasound at an intensity of 5.8 W/cm2. The chemical effects and mechanical effects arising from acoustic cavitation were determined by the amount of liberated iodine and the number of DNA double-st…
Galvanic corrosion can be defined simply as that corrosion that occurs as a result of one metal being in electrical contact with another in a conducting corrosive environment. The corrosion is stimulated by the potential difference that exists between the two metals, the more noble material acting as a cathode where s…
The electret passive environmental 222Rn monitor (E-PERM) is an extension of electret dosimeters used for measurement of x and gamma radiation. An E-PERM consists of a small cup or canister, having an electret at the bottom, and a filtered inlet at the top. The 222Rn gas entering through the filter and the decay produ…
The organic content of mineralized tissues has been found to decrease with increasing tissue density, from about 60% of the mineral weight in light bone like deer antler to 1 to 2% in hyperdense bone like porpoise petrosal. The ratio of the weight of mineral that can fill the collagen hole zones to the total mineral c…
For microwave and millimeter-wave applications, there is increasing interest in using films rather than bulk ferrites. In some cases, such as magnetostatic wave devices, films provide definite performance advantages. In other cases, films may provide lower cost, smaller size, and enhanced compatibility with planar cir…
New host molecules with a central 1,3,5-trisubstituted benzene ring and rigidly attached lateral arms composed of aryl or arylethynyl and extra functional groups are reported. They are shown to give more than thirty clathrates with a wide variety of organic solvents comprising alicyclic, aromatic, heterocyclic, dipola…
A hexagonal packing of rod like structures is proposed in solutions and gels of a perfluorinated ionomer. The diameter of the rods has been obtained by two different approaches either geometrical from shifts of the interference peak versus concentrations in small angle scattering experiments or direct from analysis of…
Radical polymerization of fumaric acid derivatives, such as dialkyl fumarates, gave polymers consisting of a less-or nonflexible substituted polymethylene structure. The yield and molecular weight of the polymers produced increased as the bulkiness of the ester substituents increased. For example, when di-t-butyl fuma…
This review article, based on a lecture delivered in Madras in 1985, is an account of the author's experience in the working out of the molecular structure and conformation of the collagen triple‐helix over the years 1952–78. It starts with the first proposal of the correct triple‐helix in 1954, but with three residue…
Experimental infections of pigs with Strongyloides ransomi, Stephanurus dentatus, Ascaris suum, Oesophagostomum spp. or Trichuris suis at increasing levels generally decrease daily gain and increase feed to gain ratio linearly. At lower, subclinical levels of infection, the feed to gain ratio typically is increased 3%…
A per-phase equivalent circuit of a linear induction motor (LIM) with sheet secondary is developed with parameters derived from field analysis, taking the specific phenomena of longitudinal-end effect, transverse-edge effect, field diffusion in the secondary, and back-iron saturation into account. The results are appl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic and structural properties of acetato(dien)copper(1+) perchlorate: a .mu.-acetato-bridged quasi-one-dimensional complexDebra K. Towle, S. K. Hoffmann, William E. Hatfield, Phirtu Singh, and Phalguni ChaudhuriCite this: Inorg. Chem. 1988, 27, 2, 394–399Publication Dat…
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