Materials Literature
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Abstract The dependency of the mechanical properties (Young's modulus, maximum load, breaking strain, and breaking energy) of polystyrene (PS) and high‐impact polystyrene (HIPS) on the tensile deformation speeds was examined without changing the mode of deformation or the shape of the test specimen. It was found that…
A simple nondestructive method for the quantitative analysis of textile fiber blends has been sug gested. The method requires measurement of moisture regain of the blend and its component fibers. Experimental studies have been made with cotton-viscose, polyester-wool, and cotton-wool blends. For comparison, blends hav…
Out-of-pile experiments were performed with Zircaloy-4 rods in subcooled water environment to study the basic phenomena occurring in the transient cooling process undergone by a fuel rod during a reactivity-initiated accident (RIA) affecting a light water reactor (LWR). The experimental results show that the cooling p…
The crystal structure of the new mineral erdite, NaFeS2.2H2O, has been determined from 263 counter-measured intensity data. The mineral is monoclinic, space group A/c, with a : 10.693(l), D : 9.1l5(l), c : s.507(4)4, B : 92.t7(2), Z : 4, D (X-ray) :2.217 g/cm3. Because of the poor quality of the crystals, the reliabil…
Experiments were performed to study the ratio of permeabilities of protium to tritium through Pd-Ag-Au alloy at the conditions of 350°C≦T≦550°C and p<1,000 mmHg. The observed ratio was 2.12±0.03 at 350°C, and it was almost independent of temperature. It is remarkable that the obtained ratio of permeabilities is consid…
An electron microscopic study has been made on the infection and penetration of the marine diatom Licmophora hyalina Agardh by Ectrogella perforons Petersen, an obligate fungal parasite of diatoms. The zoospores encyst on the host cell wall. The nucleus of the cyst may be situated proximal or distal to the host wall.…
Abstract Die ternären Carbonate LiLn(CO 3 ) 2 mit Ln = La bis Lu einschließlich Y werden aus Gemischen von Li 2 CO 3 und Ln 2 (C 2 O 4 ) 3 · xH 2 O unter CO 2 ‐Drücken von 2000 bar bei 500°C dargestellt. Es werden zwei monokline Strukturtypen beobachtet, diese werden durch IR‐ und Röntgenuntersuchungen sowie durch the…
The formation of magnetite at 310 C on carbon steels has been studied at pH 7.0 and 10.5 in presence of two oxygen levels (&lt;0.05 and 3.5 ppm) by kinetics, scanning electron microscopy, and electrochemical measurements. An adherent and protective magnetite of thickness 1.8 μ was observed after 530 hours of expos…
Dislocation loops formed in high-purity titanium irradiated at 673 K to 3.9 × 1023 neutrons/m2 (> 1 MeV) have been characterized using transmission-electron-microscopy techniques. The loop Burgers vector was of the form 1/2〈1120〉 and loop-normal measurements showed considerable deviation from the pure edge orientation…
Four species of the diatom genus Mastogloia Thwaites ex W. Smith, belonging to Hustedt's groups Apiculatae, Lanceolatae, Paradoxae and Undulatae, were studied using both transmitted light and scanning electron microscopy. Specimens were collected from the Indian River, Brevard and St Lucie Counties, Florida (salinity…
Abstract Thermal dehydrochlorination of polychloroprenes and modified polychloroprenes was studied and was found to be rapid, readily reproducible, and reliable for the characterization of these rubbers. The rates of thermal dehydrochlorination of polychloroprenes and modified polychloroprenes are first order at 190°C…
Abstract Infrared reflectivity and Raman spectra of CeH x ; (2 < x < 3) are reported. Some of phonon features in the spectra shift with the hydrogen concentration. The spectra are analyzed in terms of lattice vibrations of supercells which simulate non‐stoichiometric CeH x . Force constants thus obtained show th…
A theoretical development is presented for the growth kinetics of thick oxide films on metals. Transport of ions and electrons through the oxide layer is considered to occur by diffusion in the presence of space-charge and surface-charge fields, with local space-charge neutrality being a good approximation in the oxid…
The drift velocity of electrons in carbon dioxide has been measured at gas temperatures ranging from 193 to 573 Kand at EIN values up to 20 Td at 193 K, 50 Td at 293 K and 40 Td at 573 K. The measured drift velocities were found to decrease linearly with increasing gas number density at a given value of EIN for gas te…
Abstract This paper discusses the electrochemical behavior and corrosivity of aqueous sulfidic solutions with reference to iron and carbon steel. The chemistry of aqueous sulfidic solutions is reviewed with particular emphasis on stability of various sulfur species in aqueous solutions as a function of pH and solution…
Changes in a domain's geometry can force striking changes in the capillary surface lying above it. Concus and Finn [1] first studied capillary surfaces above domains with corners, in the presence of gravity. Above a corner with interior angle satisfying < -2, they showed that a capillary surface making contact angle w…
The accurate measurement of optical birefringence at simultaneous high pressures and temperatures using a diamond-anvil pressure cell is described. Data are presented for BiVO4 which show that the optical birefringence may be described by mean-field behaviour. An applied hydrostatic pressure of only 8 × 108 Pa reduces…
High-temperature phase-boundary sliding has been studied by simple shear creep tests in two-phase (α/β)-brass bicrystals obtained by diffusion in the solid state. The constitutive law obtained is of the form σ∼ τn in which the exponent n is equal to 1 for low stresses and to 2 for stresses greater than a limiting valu…
Abstract Synergism in poly(vinyl chloride) stabilization was studied by the determination of the dynamic and static stability of 34 different formulations. Nine ratios of Ca/Zn stearate were tested. Both the static and the dynamic stability increased almost linearly with the calcium stearate content, but unfortunately…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinduced elimination of molecular hydrogen from [MoH4(diphos)2] and [MoH4(PPh2Me)4]Ronald Pierantozzi and Gregory L. GeoffroyCite this: Inorg. Chem. 1980, 19, 6, 1821–1822Publication Date (Print):June 1, 1980Publication History Published online1 May 2002Published inissue…