Materials Literature
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Article Lattice Parameter Variation and Thermodynamics of Dihydride Formation in the Vanadium-Rich V—Ti—Fe/H2 System* was published on January 1, 1985 in the journal Zeitschrift für Physikalische Chemie (volume 145, issue 1-2).
Cellulosic derivatives form an interesting range of polymer liquid crystals. They belong to a class of mesophases in which the polymer chain is stiff or semiflexible and is chemically homogeneous. The cellulose backbone, a single-stranded homopolymer of β-linked 1,4-anhydroglucose units, contains three hydroxy groups…
Values for the order parameters < P2 > and < P4 > from polarized Raman measurements are reported for the homologous series of nematic alkylcyanobiphenyls. With increasing chain length a change of behaviour is observed from « low » < P4 >-values to higher values corresponding to the Maier-Saupe mean-field theory. In ad…
Seven new glycosides named wilfosides D1N (7), K1N (8), M1N (9), F1N (10), W1N (11), W3N (12), and G1G (13) were isolated from Cynanchum wilfordi HEMSLEY (Asclepiadaceae), and their structures were deduced on the basis of spectral and chemical evidence. A unique feature is that 7-11 and 13, as well as wilfosides C1N (…
Permeameters are of two general types: fixed-wall and flexible-wall cells. A controversy has developed over which type of cell is best suited for measuring the hydraulic conductivity of relatively impermeable, fine-grained soils. The various types of permeameters are discussed and their relative advantages and disadva…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalysis by heteropoly compounds. VIII. Reduction-oxidation and catalytic properties of 12-molybdophosphoric acid and its alkali salts. The role of redox carriers in the bulkNoritaka Mizuno, Tetsuji Watanabe, and Makoto MisonoCite this: J. Phys. Chem. 1985, 89, 1, 80–85Publ…
Abstract The water transport in microparticles of poly(2‐hydroxyethyl methacrylate) crosslinked with small amounts of ethylene glycol dimethacrylate was investigated as a function of time. Dynamic swelling curves were obtained and analyzed with a simple, empirical, exponential expression, where the exponent n indicate…
Reversible disruption and re-formation of micelles is observed by following the redox reaction of the redox-active micelles formed by the bromide salt of (11-ferrocenyl)undecyltrimethylammonium having a ferrocene moiety instead of the terminal methyl proton.
The chemical components of the Chinese crude drug "Pai-Wei, " dried root of Cynanchum atratum BUNGE (Asclepiadaceae), have been studied. Five new oligoglycosides named cynatratoside-A (3), -B (4), -C (6), -D (8), and -E (9) were isolated by column chromatography and their structures were determined on the basis of che…
Reprecipitated fibrils from collagen solutions assemble into aggregates often showing a remarkable twisted structure. We first observed these aggregates in collagen gels prepared to facilitate culture of epithelial cells. We verified that these structures form in the absence of cells and correspond to a process of sel…
The treatment of wool under anhydrous (non‐swelling) conditions with potassium tert‐butoxide dissolved in tert‐butanol was studied. The aim was to confine reaction with the alkaline reagent to the outer surface of the fibre, thus preventing whole‐fibre degradation. It appears that the a/koxide specifically reacts with…
The interaction of the reduced ‘blue solutions’ of ruthenium chloride in methanol with alkali-metal carboxylates yields the air-sensitive paramagnetic complexes, Ru2(µ-O2CR)4(R = H, Me, CH2Cl, Et, or Ph), that form weakly end-co-ordinated bis adducts, Ru2(µ-O2CR)4L2[L = H2O, MeOH, tetrahydrofuran (thf), Me2CO, or MeCN…
Fourier transform infrared spectroscopy was used to study the metal oxide/silane interface. Structures of γ-aminopropyldimethylethoxysilane (γ-APDMES) coupling agent on the surface of metal oxide powders are proposed. The structures depend on the surface characteristics of the substrate. The amine group of the silane…
The exact calculation of the reflection from single domain aligned samples of helicoidal liquid crystals (SmC* or cholesterics) is performed using the 4 x 4 matrix formulation of Maxwell equations in anisotropic media. We show that the expansion, approximation up to the 1st order of Berreman and Scheffer, is not adequ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSANS and SAXS studies on molecular conformation of a block polymer in microdomain spaceH. Hasegawa, Takeji Hashimoto, Hiromichi Kawai, Timothy P. Lodge, Eric J. Amis, C. J. Glinka, and Charles C. HanCite this: Macromolecules 1985, 18, 1, 67–78Publication Date (Print):January…
Two new example are reported of (quantitative) light-induced excited spin state trapping (LIESST) in coloured polycrystalline iron(II) spin-crossover compounds, with practically infinite lifetime of the high spine state below a critical temperature (25 and 55K, respectively); LIESST now appears to be a common effect f…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and structure of the [(OC)3Mn(cis-Nb2W4O19)]3- and [(OC)3Re(cis-Nb2W4O19)]3- anionsC. J. Besecker, V. W. Day, W. G. Klemperer, and M. R. ThompsonCite this: Inorg. Chem. 1985, 24, 1, 44–50Publication Date (Print):January 1, 1985Publication History Published online1…
This presents a simple framework for studying the basic properties of the broad class of organic charge-transfer solids. It is shown that many of the differences in behavior of these materials can be described and understood in terms of a single, physical variable: δEREDOX, the difference between the electrochemical o…
The Structural Design Concept. Mechanics of Aerospace Structures. Constitution of Aerospace Materials. Theory and Analysis of Aerospace Beams. Work and Energy Principles. Deformation and Force Analysis of Aerospace Structures. Introduction to Finite Element Stiffness Method. Appendix.
Polyaniline films give a photoresponse when dipped into an aqueous solution of electrolyte.