Stephen R. Allsopp、Alan L. Cox、Terence J. Kemp 等 6 位作者1979-01-01Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases
The behaviour of (i) the luminescence spectrum, (ii) the (relative) luminescence quantum yield and (iii) the luminescence lifetime of [Os(phen)3]2+(phen = 1,10-phenanthroline) and [with respect to (ii) and (iii)] of [Os(bipy)3]2+(bipy = 2,2′-bipyridine), has been examined in the temperature range 77–300 K, principally…
Organic Light-Emitting Diodes ResearchPhotochemistry and Electron Transfer StudiesLanthanide and Transition Metal Complexes
Ernesto Giesbrecht1979-01-01Pure and Applied Chemistry
Abstract
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesInorganic Fluorides and Related Compounds
作者信息未提供1979-01-01Zeitschrift für Kristallographie - Crystalline Materials
Abstract γ Ag 8 GeTe 6 belongs to space group F [unk]3 m with Z = 4 and a = 11.58 ± 0.02Å. The arrangement of the tellurium atoms is almost precisely that of both the magnesium and copper atoms in the Friauf-Laves cubic phase of MgCu 2 . This arrangement produces 136 tetrahedra per unit cell, of which four are occupie…
Crystal Structures and PropertiesPhase-change materials and chalcogenidesOrganic and Molecular Conductors Research
R. L. Woodward1979-01-01Metals Technology
The ballistic penetration behaviour of a high-strength aluminium alloy, 7001 T6, was investigated and targets of the alloy were found to fail in two modes, discing or plugging, depending on the orientation of the target in relation to the extrusion direction of the round bar from which it was cut. The dependence of fa…
High-Velocity Impact and Material BehaviorStructural Response to Dynamic LoadsElectromagnetic Launch and Propulsion Technology
E. Baharie、G. S. Pawley1979-01-01Acta Crystallographica Section A
The structure of hexabromobenzene, C6Br6, has been determined at 300 K by neutron powder diffraction. The crystal is monoclinic, a = 15.357 (4), b = 4.007 (1), c = 8.364 (2) Å, β = 92.65 (2)°, space group P21/n, Z = 2. The problem is well suited for a constrained refinement with the program EDINP. Within the accuracy…
Crystallography and molecular interactionsX-ray Diffraction in CrystallographyChemical Thermodynamics and Molecular Structure
V.M. Patarini、N. S. Bornstein、M. A. DeCrescente1979-01-01Journal of Engineering for Power
Hot corrosion is the accelerated rate of oxidation of coatings and substrates, which occurs when a condensed phase is present on the surface. The major constituent of the corrosive deposit is sodium sulfate, although when fuels other than light distillates are employed, the deposit can contain various amounts of vanad…
Advanced Combustion Engine TechnologiesCatalytic Processes in Materials ScienceHigh-Temperature Coating Behaviors
David L. Hilden、Russell F. Stebar1979-01-01International Journal of Energy Research
In spite of its known shortcomings as a fuel for spark ignition engines, acetylene has been suggested as a possible alternative to petroleum-based fuels since it can be produced from non-petroleum resources (coal, limestone and water). Therefore, acetylene was evaluated in a single-cylinder engine to investigate perfo…
Catalytic Processes in Materials ScienceSynthesis and Biological Evaluation
Phillip Clark、E. Jackson、Michael J. Robinson1979-01-01British Corrosion Journal
The corrosion rate of commercial grade, coid-rolled nickel in 50%v/v (5·6 M) hydrochloric acid, with and without the presence of thiourea or one of several of its derivatives, has been studied by gravimetric and electrochemical methods over the temperature range, 23–79°c. All the compounds exhibited some ability to in…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
L. I. Al'Shinskaya、Ν. I. Leonyuk、T. I. Timchenko1979-01-01Kristall und Technik
Abstract Solution‐melts based on PbF 2 —B 2 O 3 and Bi 2 O 3 —B 2 O 3 were used in studying the stability regions and for growth, by way of spontaneous crystallization, of crystals up to 3 mm in size of twelve compounds having the general formula RGa 3 (BO 3 ) 4 . All of these compounds are isostructural with carbonat…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsCrystal Structures and Properties
J. V. Yakhml、V. K. Kelkar、R. P. Shukla 等 4 位作者1979-01-01Molecular crystals and liquid crystals
The refractive indices in the nematic and isotropic phases have been determined for the pnbutoxy-and p-n-amyloxybenzoic acids. The orientational order parameter in the nematic phase has been calculated for both the compounds using Vuks formula. The variation of order parameter with respect to reduced temperature for b…
Liquid Crystal Research AdvancementsPhotochemistry and Electron Transfer StudiesMolecular spectroscopy and chirality
K. Farrell、RT King1979-01-01OpenAlex
Tension specimens of 6061 aluminum alloy (nominally 1Mg-0.6Si) were heat-treated to give fully annealed (“0” temper) and precipitation-hardened (“T6” temper) conditions, and were irradiated in water at 328 K (0.35 Tm) to fast (>0.1 MeV) fluences up to 1.8 × 1027 neutrons/m2 and thermal (<0.025 eV) fluenc…
Microstructure and mechanical propertiesFusion materials and technologiesAluminum Alloy Microstructure Properties
V. Rives、G. Munuera、J. M. Criado1979-01-01Spectroscopy Letters
Infrared and Raman spectra of CO[dbnd] 3 ions are different in the two crystallographic forms of CaCO3 Calcite and Aragonite owing to their different site symmetries. Due to this fact, i.r. has been used to assess the reversible Calcite ← → Aragonite transformation which occurs upon grinding of CaCO3, and much work ha…
Methane Hydrates and Related PhenomenaCalcium Carbonate Crystallization and InhibitionCO2 Sequestration and Geologic Interactions
RT Harrold1979-01-01OpenAlex
Acoustical detection of electrical discharges was perhaps the earliest technology used by man as he became aware of lightning flashes and the associated sound of thunder during rainstorms. Presumably, for millions of years man knew that the sound of thunder gave an early warning of an approaching storm (Lucretius (95-…
High voltage insulation and dielectric phenomena
J. H. O'Donnell、Nazia Rahman、Craig A. Smith 等 4 位作者1979-01-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChain Scission and Cross-Linking in the Radiation Degradation of Polymers: Limitations on the Utilization of Theoretical Expressions and Experimental Results in the Pregel RegionJ. H. O'Donnell, N. P. Rahman, C. A. Smith, and D. J. WinzorCite this: Macromolecules 1979, 12, 1…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
Fanghua Li、FAN HAI-FU、中国科学院物理研究所1979-01-01Acta Physica Sinica
摘要 Abstract 作者及机构信息 李方华, 范海福 1. 中国科学院物理研究所 Authors and contacts LI FANG-HUA, FAN HAI-FU 1. 中国科学院物理研究所 参考文献 [1] 施引文献
Electron and X-Ray Spectroscopy Techniques
M. Spiess、R. Gruehn1979-01-01Zeitschrift für anorganische und allgemeine Chemie
Abstract Mit kontinuierlichen Heizguinieraufnahmen wurde die Dehydratisierung von ZnSO 4 · 7 H 2 O und das Hochtemperaturverhalten von wasserfreiem ZnSO 4 untersucht. Der Abbau von ZnSO 4 · 7 H 2 O verläuft an der Luft über das 6‐Hydrat, eine unbekannte Hydratphase und das 1‐Hydrat zum N‐ZnSO 4 , der Normaltemperaturf…
Crystallization and Solubility StudiesChemical and Physical Properties in Aqueous SolutionsThermal and Kinetic Analysis
F. Nakasato、Masatoshi Takahashi1979-01-01Metals Technology
The effects of boron, titanium, and nitrogen contents on the hardenability of boron-bearing steels have been studied. The boron hardenability factor was found to be a rapidly decreasing function of (total N – N as TiN). Thus, it was confirmed that titanium plays a very important role in retaining the excellent hardena…
Metal and Thin Film MechanicsAdvanced materials and compositesMetal Alloys Wear and Properties
R. Ayroles、J. Torrès、J. Aubrée 等 5 位作者1979-01-01Applied Physics Letters
We have used for the first time the electron-microscopy technique to reveal the pure ferroelastic phase domain structure of lead phosphate, Pb3(PO4)2. The domain configuration confirms previous identifications of the symmetry elements lost at the transition. The domains are found separated by thin walls whose thicknes…
Ferroelectric and Piezoelectric MaterialsPhotorefractive and Nonlinear OpticsSolid-state spectroscopy and crystallography
Kong-Hung Lee、P. de Mayo1979-01-01Journal of the Chemical Society Chemical Communications
Irradiation of 3-alkylcylcopentenones in potassium dodecanoate micelles leads to greatly increased efficiency of dimerisation over that in homogeneous solution and regiospecific head-to-head control far beyond that possible by solvent variation.
Porphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer StudiesPhotochromic and Fluorescence Chemistry
Nguyễn Hữu Tình、A. Zann、Jean Dubois1979-01-01Molecular crystals and liquid crystals
An homologous series of mesomorphic compounds, the I-(4-alkoxy or alkyl-benzoyloxyphényl)-2-(4′-pentylphenyl)-ethanes, has been synthesized. The compounds with R = alkyl have low-melting points and wide mesomorphic ranges, for example from 33.5°C to 106.5C. The compounds with R = alkoxy exhibit a smectic polymorphism;…
Liquid Crystal Research AdvancementsSynthesis of Organic CompoundsAxial and Atropisomeric Chirality Synthesis