Materials Literature
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Collagen is the major matrix protein produced by corneal endothelial cell cultures and represented 1% of total protein synthesis. The different types of collagen were determined by a combination of DEAE- and CM-cellulose column chromatography using known internal markers. Type III collagen was the major component both…
Correlated calculations using many-body perturbation theory and good basis sets for the dipole moment, polarizability, and hyperpolarizabilities of ${\mathrm{H}}_{2}$O are reported. The finite-field coupled Hartree-Fock (CHF) theory is used as a zeroth-order approximation, with electron correlation included via the li…
High resolution electron lattice images of an end-on, dissociated 60° dislocation in silicon have been used to determine the type (shuffle or glide) of dislocation present. Characteristic features of the 30° partial core image which depend on detail beyond the instrumental point resolution have been used together with…
Corrosion processes of Al 2 O 3 ‐ZrO 2 ‐SiO 2 and Al 2 O 3 ‐SiO 2 refractories were studied. Chemical, microscopic, and X‐ray diffraction investigations are reported. The results are interpreted using the SiO 2 A1 2 O 3 ‐K 2 O and SiO 2 ‐Al 2 O 3 ‐PbO phase diagrams. An explanation is put forward regarding the process…
A theoretical and experimental description of a new light spectroscopic method for determination of second rank order parameters is presented. The linear dichroism is obtained from the total fluorescent intensity, measured by using an integrating sphere. The method has been tested on a dichroic sample consisting of a…
A synergistic nitrite/N,N-di-(phosphonomethyl) methylamine corrosion inhibitor for ferrous metals in aqueous media has been developed which is an effective corrosion inhibitor when compared to nitrite, zinc chromate, or zinc phosphonate. The protection given to ferrous metals in aerated neutral solutions by this corro…
This paper reports the transient voltage breakdown characteristics of electrical insulation operating at cryogenic temperatures. Nomex®e, Tyvek® and polypropylene film/cellulose paper laminate (PPLP) specimens impregnated with liquid nitrogen (LN2) and containing cavities of known dimensions were subjected to either 1…
In 1926 Semon tried to dehydrohalogenate high molecular weight poly(vinyl chloride) (PVC) in a high boiling solvent to get an unsaturated polymer which might bond rubber to metal. Unexpectedly, he obtained plasticized PVC, a flexible product inert both electrically and chemically. This discovery opened the door to the…
The correlations between results of nondestructive and destructive tests on high-voltage coil insulations for rotating machines were investigated and the following findings were obtained. Breakdown voltage on application of a commercial line voltage (50 Hz) is correlated to the voltage at which a partial discharge bri…
Abstract A technique is described which enables selected areas of a specimen to be located and examined using XPS. Results obtained using the technique are given which indicte that areas less than 0.5 mm square can be analysed.
The magnetostriction constants, λ 100 and λ 111 , of f.c.c. Ni-Co alloys have been measured in the temperature range between 77 and 450 K using the strain gauge technique. The sign of λ 100 changes from negative to positive with increasing Co content in the temperature range between 77 and 450 K, while the values of λ…
The total cross section for pair production by photons in the field of free electrons is fitted to simple analytic expressions in four intervals of the incident photon energy which cover the whole range between threshold and infinity
Abstract Bariumthioantimonate(III), Crystal Structure Ba 8 Sb 6 S17, prepared by fusion of the binary sulfides at 1120 K, crystallizes in the mono-clinic system (space group:P2/c) with a= 1141 ± 1 pm, b = 1373 ± 1 pm, c = 2253 ± 2 pm, β = 90.94 ± 0.05°. In the structure there are isolated distorted SbS 3 3- -trigonal…
Neutron time-of-flight powder data have been collected for forsterite [Mg2SiO4; Pbnm (D162h, No. 62); Z = 4, a = 4.7534 (1), b = 10.1989 (2), c = 5.9813 (1) Å] with the ZING-P′ high-resolution diffractometer at Argonne National Laboratory. Forty-seven variables, including anisotropic temperature-factor coefficients, w…
Using a simple new interferometric technique, the ordinary and extraordinary refractive indices of the nematic liquid crystal p-ethoxybenzilidene-p-n-butylaniline have been measured separately as a function of temperature. Changes in the refractive indices have been measured with an accuracy of ±0.005% and the absolut…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntramolecular electron transfer from pentacyanoferrate(II) to pentaamminecobalt(III) via an imidazolate bridge. The role of distance in inner-sphere reactionsAlek P. Szecsy and Albert HaimCite this: J. Am. Chem. Soc. 1981, 103, 7, 1679–1683Publication Date (Print):April 1,…
Room-temperature studies of I-V characteristics and variation of both the dielectric constant and dielectric loss with frequency are presented for ZnO-Bi2O3 samples having different compositions and prepared by sintering at different temperatures. The nonlinearity parameter, dc resistivity, dielectric constant, and di…
Abstract For the first time the anisotropy of reflectivity of polarized infrared light of p‐(Bi 1– x Sb x ) 2 Te 3 single crystals (0.5 ≦ x ≦ 1) is given in the wave number range of 300 to 4000 cm −1 . In addition to the excitation of free carriers in the reflection spectra of the mixed crystals also interband excitat…
We report a study of the relative reactivity of the common amino acids and of their residues in lysozyme with osmium tetroxide, the osmium tetroxide-pyridine reagent, and with the oxo-osmium(VI)-pyridine reagent. With free amino acids, the osmium(VIII) reagents are most reactive with Met, Cys, His, Thr, Ser, Trp, Lys,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTENDOR study of oxovanadium(IV) tetraphenylporphyrin randomly oriented in rigid solutionCharles F. Mulks and Hans Van WilligenCite this: J. Phys. Chem. 1981, 85, 9, 1220–1224Publication Date (Print):April 1, 1981Publication History Published online1 May 2002Published inissue…