Timothy R. Felthouse、David N. Hendrickson1978-09-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic exchange interactions in binuclear transition-metal complexes. 17. Benzidine and p-phenylenediamine, extended aromatic diamine bridging ligands in binuclear copper(II) 2,2',2''-triaminotriethylamine and vanadyl bis(hexafluoroacetylacetonate) complexesTimothy R. Felt…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
K. Bergmann1978-09-01Journal of Polymer Science Polymer Physics Edition
Abstract The broad‐line proton NMR spectra of polyethylene are separated into three components (broad, medium, and narrow) corresponding to the crystalline and two kinds of amorphous protons, respectively. All amorphous protons are found to be mobile above 210°K. The unusually low molecular mobility in the amorphous r…
Polymer crystallization and propertiesAdvanced NMR Techniques and ApplicationsNMR spectroscopy and applications
Lucien Stella、Zdeněk Janoušek、Robert Merènyi 等 4 位作者1978-09-01Angewandte Chemie International Edition in English
Radicals are stabilized by simultaneous substitution with a donor (X) and an acceptor group (Y). Thus (1) and isobutyronitrile radicals do not give a polymer but the radical (2) which is stable when hot.
Radical Photochemical ReactionsPolyoxometalates: Synthesis and ApplicationsSynthetic Organic Chemistry Methods
M. Schadt、Frithjof Müller1978-09-01IEEE Transactions on Electron Devices
Complete sets of measurements are reported of the elastic, dielectric, optical, and viscous properties of new liquid-crystal mixtures for twisted nematic displays. Their optical and capacitive threshold voltages were shown to be identical and were used to determine the twist elastic constants k22. The splay (k11) and…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsSemiconductor Lasers and Optical Devices
A. Corradi、E.P. Wohlfarth1978-09-01IEEE Transactions on Magnetics
The influence of densification on the remanence, the coercivities and the interaction field was measured for two differing powders of γFe2O3. The coercive force Hcand two remanence coercivities Hrand H'r(deduced from d.c. demagnetization and static remanence curves, respectively) vary linearly on compression, as does…
Magnetic properties of thin filmsMetallic Glasses and Amorphous AlloysMagnetic Properties and Applications
George McLendon、Eric H. Radany1978-09-01Journal of Biological Chemistry
A parametric correlation (p less than 0.01) has been found between the in vitro thermal stability and in vivo turnover rates of nine intracellular proteins. These results are discussed in terms of a "thermodynamic" model for turnover control, in which the rate of intracellular protein degradation is controlled by intr…
Protein Structure and DynamicsMetabolism and Genetic DisordersEnzyme Structure and Function
S. Iijama、Peter R. Buseck1978-09-01Acta Crystallographica Section A
Disorder in stacking sequences of mica minerals, predominantly 1M muscovite from York, Ontario and biotite from Mitchell Co., North Carolina, was observed using high-resolution electron microscopy. The specimens were prepared by sectioning the flakes of mica in the microtome with a diamond knife, so that crystals were…
Crystal Structures and PropertiesClay minerals and soil interactionsX-ray Diffraction in Crystallography
D. P. Jones、N Thomas、W. A. Phillips1978-09-01Philosophical Magazine B
Below 1 K the heat capacity C(T) of bulk amorphous As is proportional to the cube of the absolute temperature T, in marked contrast to the behaviour of other amorphous solids. Above 1 KC(T)/T3 increases rapidly to a maximum at about 5 K, decreasing more gradually at higher temperatures, in a way that resembles other a…
High-pressure geophysics and materialsGlass properties and applicationsPhase-change materials and chalcogenides
Muin S. Haddad、David N. Hendrickson1978-09-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic exchange interactions in binuclear transition-metal complexes bridged by imidazolate, benzimidazolate, biimidazolate, and bibenzimidazolate ionsMuin S. Haddad and David N. HendricksonCite this: Inorg. Chem. 1978, 17, 9, 2622–2630Publication Date (Print):September 1,…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Richard C. Barth、James O. Klemmedson1978-09-01Soil Science Society of America Journal
Abstract Spatial patterns of dry matter, nitrogen, and organic carbon were investigated for velvet mesquite [ Prosopis juliflora (Swartz)] DC and for palo verde [ Cercidium floridum Benth.] ecosystems in the Upper Sonoran Desert of Arizona. Standing understory vegetation and litter originating from the overstory shrub…
Clay minerals and soil interactionsAeolian processes and effectsAgronomic Practices and Intercropping Systems
Katsunori Yagi、C. D. Han1978-09-01Journal of Applied Polymer Science
An experimental study was carried out to investigate the influence of molecular weight distribution on stretchability and thread nonuniformity of high-density polyethylene monofilaments. For the study, a melt-spinning/multistage stretching device was constructed, and the monofilaments were extruded first into a quench…
Polymer crystallization and propertiesNatural Fiber Reinforced CompositesTribology and Wear Analysis
Toshitsugu Yamazaki、T. Tomimasu、T. Mikado 等 4 位作者1978-09-01Journal of Applied Physics
The measurement of the response of Mg2SiO4 : Tb thermoluminescent dosimeter against radiation dose has been made and the result is presented. The supralinearity observed is characterized by (1) a clear power-law relation between the response and the dose and (2) a sharp transition from the linear to the supralinear re…
Luminescence Properties of Advanced MaterialsPhotorefractive and Nonlinear OpticsOptical and Acousto-Optic Technologies
G. Marcon、R. Peffen、H. Lemaire1978-09-01IEEE Transactions on Magnetics
Hard magnetic properties of Alnico 5 are very sensitive to the applied cooling rate under a magnetic field. A new experimental device has been designed, which allows to cool samples at a constant speed in the gap of an electromagnet. Cooling rates can be varied from 5°C/min. to 170°C/min, and the magnetic field can be…
Magnetic and transport properties of perovskites and related materialsMetallic Glasses and Amorphous AlloysMagnetic Properties of Alloys
P. Dreyfuss1978-09-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of Silane Coupling Reactions. 1. Reaction of Trimethylmethoxysilane and Triethylsilanol Studied by Gas-Liquid ChromatographyP. DreyfussCite this: Macromolecules 1978, 11, 5, 1031–1036Publication Date (Print):September 1, 1978Publication History Published online1 Ma…
Mesoporous Materials and CatalysisSilicone and Siloxane Chemistry
S. Tiitto1978-09-01IEEE Transactions on Magnetics
Based on observations about statistical characteristics and microstructural dependence of Barkhausen noise, a possible model for the mutual coupling of domain transitions within polycrystalline microstructure is proposed. Experimentally evaluated Barkhausen noise behaviour as a function of grain size in annealed and t…
Microstructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsNon-Destructive Testing Techniques
Mahmut Sayın、Heinrich G. Reichenbach1978-09-01Clay Minerals
Abstract Nine muscovite samples from different localities were analysed for all major chemical elements and examined by infrared spectroscopy in the range of 4000–250 cm −1 . Iron in the octahedral positions was found to cause an intensity decrease and shifting of some absorption bands. Other structural cations were f…
Concrete and Cement Materials ResearchClay minerals and soil interactionsIron oxide chemistry and applications
Masaru Matsuo、Kazumi Hirota、Ken‐ichi Fujita 等 4 位作者1978-09-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on the Deformation Mechanism of Polyethylene Spherulites by the Orientation Distribution Function of CrystallitesMasaru Matsuo, Kazumi Hirota, Kenichi Fujita, and Hiromichi KawaiCite this: Macromolecules 1978, 11, 5, 1000–1007Publication Date (Print):September 1, 197…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
R. A. McCurrie、J. M. Rickman、P. Dunk 等 4 位作者1978-09-01IEEE Transactions on Magnetics
The magnetic properties of the alloy Mn55Al45in its metastable ferromagnetic state have been investigated as a function of particle size in the range 1000μm down to about 20μm. It has been shown that the coercivity rises very rapidly as the particle size decreases but the remanence was shown to increase slowly and the…
Magnetic properties of thin filmsMagnetic and transport properties of perovskites and related materialsMagnetic Properties of Alloys
P. J. Phillips、Jaymit Patel1978-09-01Polymer Engineering and Science
Abstract The tensile properties of high and low density polyethylene specimens produced under careful crystallization and annealing procedures have been determined. A morphologically controlled brittle‐ductile transition has been observed for high density polyethylene. Although the lamellar thickness appears to determ…
Mechanical Behavior of CompositesPolymer crystallization and propertiesComposite Material Mechanics
C. P. Hrung、Minoru Tsutsui、D. L. Cullen 等 5 位作者1978-09-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, characterization, and structure of tri-.mu.-halogeno-hexacarbonyldirhenate(I) salts of monocationic porphyrin acidsC. P. Hrung, M. Tsutsui, D. L. Cullen, E. F. Meyer Jr., and C. N. MorimotoCite this: J. Am. Chem. Soc. 1978, 100, 19, 6068–6076Publication Date (Prin…
Porphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsSurface Chemistry and Catalysis