Materials Literature
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Abstract The mineralogy of the clay fractions (<2 µ m) of the major soils of England and Wales is reviewed, and the data presented in terms of the 1:250 000 National Soil Map. Most soils developed in pre-Rhaetic sediments are dominated by mica with lesser amounts of chlorite and kaolin. Exceptions are soils develop…
X-ray and infrared spectroscopic analyses were used to measure crystallinity of cotton fibers swollen in liquid ammonia and an aqueous solution of caustic soda. Changes due to such swelling, which took place in the accessible regions, were determined by moisture regain and iodine and dye sorption. Results showed that…
Abstract The formula for the first derivative of the MCSCF energy with respect to a nuclear coordinate is reviewed. The efficient utilization of symmetry in programs employing symmetry‐adapted basis functions is described: Advantages that are also obtained for higher derivatives and for gradients of nonself‐consistent…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLow-spin manganese(III) porphyrin imidazolate and cyanide complexes. Modulation of magnetic anisotropy by axial ligationAndrew P. Hansen and Harold M. GoffCite this: Inorg. Chem. 1984, 23, 26, 4519–4525Publication Date (Print):December 1, 1984Publication History Published on…
Breakdown Phenomena During the Growth of Anodic Oxide Films on Zirconium Metal: Influence of Experimental Parameters on Electrical and Mechanical Breakdown, Di Quarto, Francesco, Piazza, Salvatore, Sunseri, Carmelo
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of Arrhenius kinetic constants by differential scanning calorimetryJan C. M. Torfs, Leen. Deij, Anthonie J. Dorrepaal, and Josef C. HeijensCite this: Anal. Chem. 1984, 56, 14, 2863–2867Publication Date (Print):December 1, 1984Publication History Published onlin…
SUMMARY Magnetite grains in lateritic saprolite have altered in situ to porous hematite (martite) grains. Hematite occurs as relatively large (∼ 1 μm) platy crystals, triangular arrays of small (0.01–0.05 μm) lathlike crystals and very small (< 100 Å) platy anhedral particles. Titanium increased in altered grains a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntrinsic viscosity of poly(hexyl isocyanate) in butyl chlorideMamoru Kuwata, Hirochika Murakami, Takashi Norisuye, and Hiroshi FujitaCite this: Macromolecules 1984, 17, 12, 2731–2734Publication Date (Print):December 1, 1984Publication History Published online1 May 2002Publi…
Abstract A series of stretch‐blow molded poly(ethylene terephthalate) bottles were investigated using measurements of birefringences (in plane and out of plane) and wide angle x‐ray diffraction (WAXS) pole figures. Both bottles prepared in our laboratories and commercial bottles were investigated. Birefringences Δ n 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray crystal and molecular structures of related octahedral magnesium tetraphenylporphyrin complexesV. McKee, Ong Chin Choon, and G. A. RodleyCite this: Inorg. Chem. 1984, 23, 25, 4242–4248Publication Date (Print):December 1, 1984Publication History Published online1 May 20…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of graft co-polymerization onto polysaccharides initiated by metal ion oxidation reactions of model compounds for starch and celluloseTakahisa Doba, Cenita Rodehed, and Bengt RanbyCite this: Macromolecules 1984, 17, 12, 2512–2519Publication Date (Print):December 1,…
In many commercial processes cellulose is exposed to elevated temperatures in the 100 to 200°C range. Though this range is below the glass transition temperature (Tg) of dry cellulose, in the presence of polar media Tg is depressed, and molecular mobility is sufficient to allow structural reorganization. In the presen…
Sizes and shapes of the component phases of immiscible polymer blends are strongly influenced by the viscoelastic properties of each component. For mixtures of different poly(ethylene terephthalate)s and polyamide-6 it can be established that the morphology under shear is the result of the viscosity ratio, which deter…
A convenient method for measuring the dc Kerr effect on the stage of a polarizing microscope is described. Two novel illustrations of this technique are presented: a low-field determination of the pretransitional Kerr effect in the isotropic phase of a nematic having a negative dielectric anisotropy and measurements o…
Abstract This paper presents new data on the resistance of recently developed high‐alloy stainless steels to localised corrosion in chloride solutions. Pitting potential was determined in artificial sea water, and critical pitting temperature CPT in very aggressive FeCl 3 solution. Critical crevice corrosion temperatu…
SUMMARY Dimensional changes of bovine kidney and liver tissues in the course of processing under four different schedules were measured. Shrinkage of tissues at dehydration, substitution with intermedium and paraffin infiltration stages was 1–2%, 2–5% and 5–10% respectively. There was no significant difference in fina…
Abstract The soils of Scotland are relatively young, being developed mainly on glacial drift deposited some 10 000 years ago. Only a small number of genetic soil types are represented, but this is more than compensated for by the wide variety of parent materials from which the drift ultimately derives. The major paren…
Abstract It is known that the x‐ray scattering pattern of an amorphous polymer may contain one or more halos corresponding to van der Waals spacings or larger. In this work we found that (i) the halo positions (and equivalent Bragg spacings) vary systematically with the cross‐sectional area of the polymer chain in the…
Abstract Compatible systems of total tree cubic volume, volume ratio, and stem taper curves are developed based on four well known volume equations: the constant form factor, the combined variable, Schumacher's, and Honer's. These systems are constructed to insure that the volume obtained for a portion of the tree bol…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural characterization of a terbium(III) complex with 1,4,8,11-tetraazacyclotetradecane-1,4,8,11-tetraacetic acid. Lanthanide ions and the conformation of the 14-membered macrocyclesMarie Rose Spirlet, Jean Rebizant, Marie France Loncin, and Jean F. DesreuxCite this: In…