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Preparation and structural characterization of nitrosyl complexes of ferric porphyrinates. Molecular structure of aquonitrosyl(meso-tetraphenylporphinato)iron(III) perchlorate and nitrosyl(octaethylporphinato)iron(III) perchlorate

W. Robert Scheidt、Young Ja Lee、Keiichiro Hatano1984-05-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and structural characterization of nitrosyl complexes of ferric porphyrinates. Molecular structure of aquonitrosyl(meso-tetraphenylporphinato)iron(III) perchlorate and nitrosyl(octaethylporphinato)iron(III) perchlorateW. Robert Scheidt, Young Ja Lee, and Keiichir…

Metal complexes synthesis and propertiesMagnetism in coordination complexesPorphyrin and Phthalocyanine Chemistry

Extracting physical structure information from thin organic films with reflection absorption infrared spectroscopy

Mark K. Debe1984-05-01Journal of Applied Physics

A RATIO method has been developed to extract physical structure information from anisotropic thin organic films on metal substrates using reflection absorption infrared spectroscopy (RAIR). The physical structure information referred to are the Euler angles, θ and ψ, specifying the molecular orientation relative to th…

Porphyrin and Phthalocyanine ChemistrySpectroscopy and Quantum Chemical StudiesElectrochemical Analysis and Applications

Organoactinide phosphine/phosphite coordination chemistry. Facile hydride-induced dealkoxylation and the formation of actinide phosphinidene complexes

Michael R. Duttera、Victor W. Day、Tobin J. Marks1984-05-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganoactinide phosphine/phosphite coordination chemistry. Facile hydride-induced dealkoxylation and the formation of actinide phosphinidene complexesMichael R. Duttera, Victor W. Day, and Tobin J. MarksCite this: J. Am. Chem. Soc. 1984, 106, 10, 2907–2912Publication Date (P…

Metal complexes synthesis and propertiesRadioactive element chemistry and processingLanthanide and Transition Metal Complexes

Effective viscosity of a periodic suspension

Kevin C. Nunan、Joseph B. Keller1984-05-01Journal of Fluid Mechanics

The effective viscosity of a suspension is defined to be the four-tensor that relates the average deviatoric stress to the average rate of strain. We determine the effective viscosity of an array of spheres centred on the points of a periodic lattice in an incompressible Newtonian fluid. The formulation involves the t…

Material Dynamics and PropertiesComposite Material MechanicsHeat and Mass Transfer in Porous Media

Polymer-bound substrates: a method to distinguish between homogeneous and heterogeneous catalysis

James P. Collman、Karen M. Kosydar、M. Bressan 等 5 位作者1984-05-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymer-bound substrates: a method to distinguish between homogeneous and heterogeneous catalysisJ. P. Collman, K. M. Kosydar, M. Bressan, W. Lamanna, and T. GarrettCite this: J. Am. Chem. Soc. 1984, 106, 9, 2569–2579Publication Date (Print):May 1, 1984Publication History Pu…

Chemical Synthesis and AnalysisSynthetic Organic Chemistry MethodsMachine Learning in Materials Science

NMR of silk fibroin. Carbon-13 NMR study of the chain dynamics and solution structure of Bombyx mori silk fibroin

Tetsuo Asakura、Yasuo Watanabe、Akane Uchida 等 4 位作者1984-05-01Macromolecules

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNMR of silk fibroin. Carbon-13 NMR study of the chain dynamics and solution structure of Bombyx mori silk fibroinTetsuo Asakura, Yasuo Watanabe, Akane Uchida, and Hidenobu MinagawaCite this: Macromolecules 1984, 17, 5, 1075–1081Publication Date (Print):May 1, 1984Publication…

Insect and Arachnid Ecology and BehaviorSilk-based biomaterials and applicationsSilkworms and Sericulture Research

Mechanisms of Transient Moisture Transport Between Fabrics

Martha Molly Adler、William K. Walsh1984-05-01Textile Research Journal

A technique was developed to study moisture transport and to determine the mechanism by which moisture is transported between fabrics under transient conditions at low moisture contents. A variety of fabrics were tested and experiments were performed at various levels of moisture content from 3% to over 100% above reg…

Surface Modification and SuperhydrophobicityTextile materials and evaluationsMaterial Properties and Processing

Performance of Metallic Fuels and Blankets in Liquid-Metal Fast Breeder Reactors

L.C. Walters、B. R. Seidel、Jean Kittel1984-05-01Nuclear Technology

Renewed interest in metallic fuels for liquid-metal fast breeder reactors (LMFBRs) has arisen for several reasons: The excellent performance demonstrated by metallic fuel, particularly at Experimental Breeder Reactor II; the demonstrated transient capability; the inherent compatibility with the sodium coolant; and the…

Nuclear reactor physics and engineeringNuclear Materials and PropertiesNuclear and radioactivity studies

Improved Comfort Polyester

H. N. Yoon、Alan N. Buckley1984-05-01Textile Research Journal

Thermal transport properties of a series of polyester, cotton, and polyester/cotton blend fabrics were determined in an effort to understand physical basis of clothing comfort. The results indicate that both the fabric construction and the constituent fiber properties affect thermal transport. In general, thermal insu…

Textile materials and evaluations

Resistivity behavior of filled electrically conductive crosslinked polyethylene

M. Narkis、A. Vaxman1984-05-01Journal of Applied Polymer Science

Abstract The electrical resistivity of crosslinked high‐density polyethylene loaded with conductive blacks and carbon fibers was studied as a function of filler concentration and temperature. A thermoelectric switching phenomenon (a sudden resistivity increase in the vicinity of the polyethylene melting point) in such…

Carbon Nanotubes in CompositesAdvanced Sensor and Energy Harvesting MaterialsSmart Materials for Construction

Single‐Crystal Elastic Constants of Yttria‐Stabilized Zirconia in the Range 20° to 700°C

Hiba Kandil、J. D. Greiner、J. F. Smith1984-05-01Journal of the American Ceramic Society

Elastic constants of single crystals of yttria‐stabilized zirconia were determined through the temperature range 20° to 700°C. Crystals containing 8.1, 11.1,12.1, 15.5, and 17.9 mol% Y 2 0 3 were measured. The elastic constant C 11 was found to decrease and C 12 and C 44 to increase with increasing Y 2 O 3 content; th…

Advanced ceramic materials synthesisMicrowave Dielectric Ceramics SynthesisNuclear materials and radiation effects

Crystallization of PP in PP/SEBS blends and its correlation with tensile properties

A. K. Gupta、S. N. Purwar1984-05-01Journal of Applied Polymer Science

Abstract Crystallization of polypropylene (PP) in the blends of PP with styrene–ethylene butylene–styrene triblock copolymer (SEBS) is studied through differential thermal analysis (DTA) and X‐ray diffraction measurements. Analysis of crystallization exotherm peaks in terms of crystallization nucleation and growth rat…

Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties

A density functional theory of melting

P. Tarazona1984-05-01Molecular Physics

A density functional model, based on the coarse grained density distribution is used to analyse the melting of hard spheres and discs. The role of the attractive interaction is modelled in a mean field approximation, to get the full solid-liquid-vapour phase diagram of a system with Lennard-Jones interactions.

Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesTheoretical and Computational Physics

Dielectric Properties of Lead‐Magnesium Niobate Ceramics

Scott Swartz、Thomas R. Shrout、Walter A. Schulze 等 4 位作者1984-05-01Journal of the American Ceramic Society

Dielectric properties are reported for lead magnesium niobate (PbMg 1/3 Nb 2/3 /O 3 ) ceramics which were prepared as single phase (i.e., without pyrochlore) with an improved technique. Dielectric constants of 18000 for pure PMN and 31000 for PMN with 10% PbTiO 3 were achieved; these values are 50% larger than those r…

Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisNuclear materials and radiation effects

Investigation of a Rechargeable Electrochemical Cell with Polyacetylene Electrodes

B. Broich、Jürgen Hocker1984-05-01Berichte der Bunsengesellschaft für physikalische Chemie

Abstract Electrochemical cells with polyacetylene, (CH) x , as active anode and cathode material have been built. The cells were of the type (CH) x /R 4 N + ClO 4 ⊖ /(CH) x . The cells with different electrode thicknesses and areas, respectively, showed all the same typical charging and discharging behaviour. From the…

Perovskite Materials and ApplicationsConducting polymers and applicationsAdvanced battery technologies research

A Photoelectrochromic Memory and Display Device Based on Conducting Polymers

Olle Inganäs、Ingemar Lundström1984-05-01Journal of The Electrochemical Society

We report a new photoelectrochromic system for information storage and display applications. This system is based on the electrochromic properties of thin films of electrochemically generated conducting polymers. These materials can be switched between two states of optical absorption: a highly absorbing, almost‐black…

Conducting polymers and applicationsTransition Metal Oxide NanomaterialsAnalytical Chemistry and Sensors

CONNECTIVE TISSUE CATCH IN ECHINODERMS

Tatsuo Motokawa1984-05-01Biological reviews/Biological reviews of the Cambridge Philosophical Society

Summary (1) Catch connective tissue is defined as the collagenous connective tissue whose mechanical properties can be changed rapidly (in seconds or minutes) under nervous control. (2) Catch connective tissues are found in all five classes of Echinodermata. They function in tone control of the tissues and in autotomy…

Marine Bivalve and Aquaculture StudiesCalcium Carbonate Crystallization and InhibitionEchinoderm biology and ecology

Magnetic alignment of collagen during self-assembly

J. Torbet、M C Ronzière1984-05-01Biochemical Journal

Magnetically induced birefringence is used to monitor the thermally induced self-assembly of collagen fibrils from a solution of molecules. The magnetic torque alone can, at best, only orient the fibrils into planes normal to the field direction. Nevertheless, the gels formed have a high degree of uniaxial alignment,…

Hydrogels: synthesis, properties, applicationsProteins in Food SystemsCollagen: Extraction and Characterization

The influence of impurities on the growth rate of calcite

H. Meyer1984-05-01Journal of Crystal Growth

The effects of 34 different additives on the growth rate of calcite were investigated. An initial growth rate of about one crystal monolayer (3 × 10-8 cm) per minute was adjusted at a constant supersaturation which was maintained by a control circuit. Then the impurity was added step by step and the reduction of the g…

Calcium Carbonate Crystallization and InhibitionCrystallization and Solubility StudiesEnzyme function and inhibition

Consistent calculation of the static and frequency-dependent dielectric constant in computer simulations

M. Neumann、Othmar Steinhauser、G. S. Pawley1984-05-01Molecular Physics

Recently a computer adapted theory suitable for evaluating the dielectric properties of polar systems has been proposed. It rests on the assumption that the system behaves like a macroscopic dielectric and that the modifications of dipolar interactions do not affect its dielectric constant. In the present paper these…

Advanced Battery Materials and TechnologiesMaterial Dynamics and PropertiesElectrostatics and Colloid Interactions