Materials Literature
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The emergence of new titanium fabrication techniques has opened up new possibilities for achieving high structural efficiency at considerably reduced costs. Superplastic forming/diffusion bonding (SPF/DB), combined with conventional metallurgical joining techniques, has been shown to effect weight reductions in future…
When crosslinked polyester-cotton blend fabrics came into general use about fifteen years ago, problems of soil retention that are inherent with these fabrics were soon recognized. Many studies were conducted to identify the factors responsible for soiling and soil retention in blends, and to develop finishes capable…
Maxima and minima are tabulated for the Bessel functions Jn(x) for values of n from 0 to 30 [i.e. zeros of J'n(x)]. The first six points are recorded for each function. The table considerably extends the range of earlier tables available in the literature. It should have applications in the interpretation of diffracti…
Belterra Clay is a uniform, yellowish kaolinitic clay lacking visihle stratification. It overlies laterite plateaus with a maximum thickness of 20 m. The clay is derived from a lateritic terrane occuring outside and within the Amazonian bauxite belt. Redistribution of clay material from the basal layers of the laterit…
p-n-alkoxycinnamoyl cholrides when treated with p- hydroxyacetophenone yield a homologous series ofmesogens. The first member is a monotropic nematogen; exhibition of enantiotropic nematic mesophase begins from the second memeber and persists up to the butyl derivative. Both smectic and nematic mesophases are exhibite…
The stability of a spherical bubble in a two-component two-phase system is examined by employing the thermodynamic theory of dilute solutions. It is shown that a bubble can remain in a state of stable equilibrium provided that the ratio of the total number of moles of the solute to the total number of moles of the sol…
Used coils from a hydro-generator and an induction motor both in operation for many years, and also model coils subjected to accelerated agings were examined concerning the correlationship between the residual breakdown voltage VR and two nondestructive measurements Δ and Qm. It was found that VR could be expressed by…
Surface photovoltage spectra of clean (110) surfaces cleaved from n-type GaAs crystals doped with Te or Si exhibit two narrow peaks at 0.72 and 0.89 eV superimposed on a broad shoulder extending from h/ω≊0.7 eV to Eg. Both peaks are strongly increased by chemisorption of oxygen and by increasing the band bending. The…
A description is given of the present status of studies on the Peierls transition, which is a metal-insulator transition characteristic of an electronically one-dimensional system. Fundamental properties of a one-dimensional electron system are discussed and the concept of charge-density wave is explained. Physical pr…
Abstract Large circular dichroism is induced when Methyl Orange is bound to the bilayer membrane of chiral dialkyl amphiphiles and the magnitude of the induced circular dichroism is changed drastically by the gel-to-liquid crystal phase transition and the chemical structure of the membrane.
Abstract Four bands occur in the Mössbauer spectra of pelletal glauconites ranging in age from Cambrian to Oligocene. Components due to Fe 3+ in the cis M(2) positions are visible in all the spectra but their shapes depend on the expanding layer content. In the spectrum of the Oligocene glauconite a very well-develope…
Abstract Temperature dependence of resistance of carbon black loaded ethylene‐vinylacetate (EVA) copolymer was studied from −100 to 250°C in a modified differential scanning calorimeter (DSC) apparatus. Both room temperature resistivity and positive temperature coefficient of resistance (PTC) effects can be correlated…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of axial interaction in high-spin iron(III) porphyrins. Paramagnetic anisotropy and zero-field splitting in (tetraphenylporphyrin)iron(III) thiocyanate and iodideD. V. Behere, Roshun Birdy, and Samaresh MitraCite this: Inorg. Chem. 1981, 20, 9, 2786–2789Publication Da…
Abstract Cesanite occurs both as a solid vein (1 cm thick) and as a cavity-filling of an explosive breccia in core samples of the Cesano 1 geothermal well (Cesano area, Latium, Italy). Cesanite is coloudess, medium to coarse grained, soft (H = 2 to 3) and light ( ρ meas 2.786±0.002 g cm −3 ). It is uniaxial negative,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMiscibility of acrylic polymers in polystyrene by melt titrationR. H. Somani and M. T. ShawCite this: Macromolecules 1981, 14, 5, 1549–1554Publication Date (Print):September 1, 1981Publication History Published online1 May 2002Published inissue 1 September 1981https://pubs.a…
The degradation of abnormal proteins produced as a result of incorporation of the arginine analog L-canavanine or generated by exposure to puromycin was studied in wild-type and multiply peptidase-deficient strains of Salmonella typhimurium. Both types of abnormal protein were rapidly degraded during growth of Pep+ st…
The cubic-tetragonal transformation driven by the elastic instability $({C}_{11}\ensuremath{-}{C}_{12})\ensuremath{\rightarrow}0$ may be followed by further rearrangements in which $\frac{c}{a}>1$ changes to $\frac{c}{a}<1$ or vice versa. These transformations are investigated by Landau theory. Unlike the cubic-…
In this overview a wide variety of pores, including gas bubbles, irradiation-induced voids, and creep cavities, are considered. The factors which govern the shape of a pore are discussed and equations from which the ultimate thermodynamic equilibrium shape of a cavity can be deduced are presented. However, it is point…
The effect of hydrogen on the apparent yield stress, which is a necessary exterior stress to cause the local macroscopic plastic deformation, was investigated for various carbon and low alloy steels with a wide range of tensile strength. Smooth tensile, bent beam, and precracked WOL specimens were used. The results sh…
Metal halide lamps are complex high temperature chemical systems which are neither closed (with respect to material flow) nor well defined thermochemically. This complexity, coupled with the commercial importance of this lamp type, has spurred the development of several models which attempt to describe the chemical (a…