Jan F. Rabek、Julia Lucki、Henryk Kereszti 等 5 位作者1990-04-05Journal of Applied Polymer Science
Abstract Catalytic dehydrochlorination (100%) of solid poly(vinyl chloride) (PVC) in the presence of AlCl 3 at 200°C gives a product which has a similar structure to the product of catalytic dehydrochlorination of 1,2‐dichloroethane in the presence of AlCl 3 at 60°C. Both products have brown‐black color, are completel…
Environmental remediation with nanomaterialsPolymer Science and PVC
Shinji Nonose、Y. Sone、Ken Onodera 等 5 位作者1990-04-05The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure and reactivity of bimetallic cobalt-vanadium (ConVm) clustersS. Nonose, Y. Sone, K. Onodera, S. Sudo, and K. KayaCite this: J. Phys. Chem. 1990, 94, 7, 2744–2746Publication Date (Print):April 5, 1990Publication History Published online1 May 2002Published inissue 5…
Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceMolecular Junctions and Nanostructures
J. Kubát、Mikael Rigdahl、Maria Welander1990-04-05Journal of Applied Polymer Science
Abstract The dynamic‐mechanical properties of high density polyethylene filled with 20% by volume of untreated glass spheres or glass spheres treated with a silane‐based coupling agent were studied as a function of temperature and imposed tensile deformation. The coupling agent used is capable of providing covalent bo…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesAdsorption, diffusion, and thermodynamic properties of materials
M. P. CROSNIER、Dominique Guyomard、A. Verbaere 等 4 位作者1990-04-03ChemInform
Abstract Colorless single crystals of the title compound are grown from mixtures of CsNO 3 , Sb 2 O 3 , and NH 4 H 2 PO 4 at 1173 K. The new compound belongs to the monoclinic space group C2/m with Z = 8. Its crystal structure consists of corner‐ or edge‐sharing SbO 6 octahedra and PO 4 tetrahedra linked to the octahe…
Luminescence Properties of Advanced MaterialsCrystal Structures and PropertiesChemical Synthesis and Characterization
Scott A. Acheson、Juliette B. Bell、Mary Ellen Jones 等 4 位作者1990-04-03Biochemistry
The enzymatic decarboxylation of orotidine 5'-monophosphate may proceed by an addition-elimination mechanism involving a covalently bound intermediate or by elimination of CO2 to generate a nitrogen ylide. In an attempt to distinguish between these two alternatives, 1-(phosphoribosyl)barbituric acid was synthesized wi…
Enzyme Structure and FunctionPorphyrin Metabolism and DisordersNeurological diseases and metabolism
Christopher Bystroff、Stuart J. Oatley、J. Kraut1990-04-03Biochemistry
The crystal structure of dihydrofolate reductase (EC 1.5.1.3) from Escherichia coli has been solved as the binary complex with NADP+ (the holoenzyme) and as the ternary complex with NADP+ and folate. The Bragg law resolutions of the structures are 2.4 and 2.5 A, respectively. The new crystal forms are nonisomorphous w…
Folate and B Vitamins ResearchEnzyme Structure and FunctionPorphyrin Metabolism and Disorders
C. Liang、C. A. Rogers1990-04-0231st Structures, Structural Dynamics and Materials Conference
The use of the thermoelastic martensitic transformation and its reverse transformation has recently been proposed and demonstrated for several active control ap plications. However, the present constitutive models have lacked several important funda mental concepts that are essential for many of the proposed intellige…
Shape Memory Alloy TransformationsTopology Optimization in EngineeringMagnetic Properties and Applications
Trieu C. Chieu、K. H. Yang1990-04-02Applied Physics Letters
Recent experimental results indicate that bistability is difficult to achieve in surface-stabilized ferroelectric liquid-crystal devices with high spontaneous polarization (Ps) materials. We formulated the basic equations to analyze the bistability as a function of the conductivity and thickness of the alignment layer…
Liquid Crystal Research AdvancementsAdvanced Materials and MechanicsPlant Reproductive Biology
Alfred K. Agyei、Joseph L. Birman1990-04-02Journal of Physics Condensed Matter
A complete analysis of the linear magnetoelectric (ME) effect is carried out which exploits the PT symmetry of the ME susceptibility tensor alpha . The existing (or 'old') theory in effect considers only the time-reversal antisymmetry of alpha , with the result that it restricts the effect to magnetic crystals. It is…
Multiferroics and related materialsSolid-state spectroscopy and crystallographyHeusler alloys: electronic and magnetic properties
M. Katter、J. Wecker、L. Schultz 等 4 位作者1990-04-02Applied Physics Letters
The magnetic properties of the hard magnetic 20:70:10 (ω) phase in melt-spun Sm20Fe70+xTi10−x (x=−2,0,2) and Sm25Fe65.6Ti9.4 were investigated. The intrinsic coercivity iHc and the magnetization J were measured as a function of both the melt spinning parameters and various heat treatments. The maximum coercivities iHc…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsMagnetic Properties of Alloys
M. Baleva、T. I. Georgiev、G. V. Lashkarev1990-04-02Journal of Physics Condensed Matter
A detailed temperature dependence of the energy gap E 0 in the PbSe and PbTe was obtained from the transmittance measurements. A non-linear change of E 0 in the vicinity of the Debye temperature was noticed. An attempt to find an empirical formula describing the experimental dependence E 0 (T) led to the conclusion th…
Advanced Thermoelectric Materials and DevicesSpectroscopy and Quantum Chemical StudiesSurface and Thin Film Phenomena
Diane S. Knight、R. Weimer、L. J. Pilione 等 4 位作者1990-04-02Applied Physics Letters
By using surface-enhanced Raman spectroscopy it was possible to clearly identify very thin diamond and amorphous carbon coatings which were not detectable by normal Raman spectroscopy. A very small amount of silver was sputtered onto the surface of thin diamond depositions. Raman spectra measured through the silver la…
High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchIon-surface interactions and analysis
Francesco Sciortino、Peter H. Poole、H. Eugene Stanley 等 4 位作者1990-04-02Physical Review Letters
We analyze the distribution of bond lifetimes in simulations of liquid water using a novel bond definition. We find that the characteristic lifetimes of the bonds and of the ``gel'' network itself both increase strongly when temperature is decreased--and even appear to diverge at a temperature well below the freezing…
Material Dynamics and PropertiesTheoretical and Computational PhysicsAdvanced Thermodynamics and Statistical Mechanics
Tomoyasu Inoue、Y. Yamamoto、S. Koyama 等 5 位作者1990-04-02Applied Physics Letters
CeO2 layer was epitaxially grown for the first time on both (111) and (100) silicon substrates by vacuum evaporation. Characterization using Rutherford backscattering and reflection high-energy electron diffraction proved that a CeO2 layer on (111) Si has considerably good crystalline quality, whereas that on (100)Si…
ZnO doping and propertiesCatalytic Processes in Materials ScienceElectronic and Structural Properties of Oxides
Hiroshi Horie、Sadato Hiratsuka、Toshinori Kowata 等 6 位作者1990-04-01Cast Metals
Eight rare-earth elements, Y, La, Ce, Pr, Nd, Sm, Dy, and Yb, were added individually to two irons, one containing 0.02% S and the other 0.08% S. After nodularisation, the metal was poured into CO2 Process sand moulds to produce stepped test-specimens with thicknesses of 3,6 and 9 mm and into shell moulds to provide ‘…
Additive Manufacturing Materials and ProcessesMetallurgical Processes and ThermodynamicsMetal Alloys Wear and Properties
G. Baumann、R. Duscher1990-04-01physica status solidi (b)
Abstract The Hohenberg‐Kohn theorem proves the existence of a universal energy functional. But still its explicit structure is unknown. Unknown parts of the energy functional, namely the kinetic and the exchange interaction energy are discussed. Based on a functional formulation of the virial theorem “functional equat…
Thermal and Kinetic AnalysisInorganic Chemistry and MaterialsChemical Thermodynamics and Molecular Structure
M. M. A. Bepari1990-04-01Materials Science and Technology
The effects of precipitates formed by the addition of vanadium, nitrogen, and aluminium on the strength and toughness in 0·15%C steels were studied by cooling suitable steels at varying rates from temperatures giving a constant austenite grain size. Yield strength increments resulting from precipitation were derived f…
Microstructure and Mechanical Properties of SteelsFatigue and fracture mechanicsMaterial Properties and Failure Mechanisms
Myung‐Hwan Whangbo、D. Jung、H. H. Wang 等 6 位作者1990-04-01Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics
Electronic structures of κ-(BEDT-TTF)4Hg3Cl8 and κ-(DMET)2AuBr2 were examined by performing tight-binding band calculations, and the crystal and electronic properties of the two salts were compared with those of other super conducting and non super conducting κ-phase salts. A possible reason for why κ-(BEDT-TTF)4Hg3Cl…
Perovskite Materials and ApplicationsOrganic and Molecular Conductors ResearchInorganic Chemistry and Materials
N. V. Bhat、A R Dharmadhikari、Satvik Wani 等 4 位作者1990-04-01Textile Research Journal
The effect of perspiration on the fine structure of cotton cellulose has been inves tigated. The degradation of fabrics by acidic perspiration proceeds initially at a slow rate, followed by a faster rate. Tensile strength decreases and yellowing increases. X- ray diffraction studies show that though the effect is main…
Dyeing and Modifying Textile FibersTextile materials and evaluations
Seichi Sato、Hirotaka Furuya、Koshi Morikawa 等 5 位作者1990-04-01Journal of Nuclear Science and Technology
Rates of He release from two kinds of simulated high-level radioactive waste glasses were measured in the temperature range from 573 to 753K by a mass spectrometric method. Diffusion coefficients of He in the glasses were determined from the fractional release data. The diffusion coefficients were given as a function…
Glass properties and applicationsNuclear Materials and PropertiesNuclear materials and radiation effects