Materials Literature
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The stresses of infinite edge dislocation multipoles are investigated with the aid of a B5500 computer, and contour maps are obtained using the line printer. These multipoles consist of infinitely long, parallel edge dislocations of same strength, arranged so as to define a prism whose cross section is a regular polyg…
Abstract The theory is presented for the electronic band structure of the dichalcogenide layer‐type crystal MoS 2 in its 2H form. Group theory is used to treat an LCAO model based on s, p, d Mo atomic states, and s, p S atomic states. Hybridised spin‐orbit bands are examined along the Δ‐axis, and at the M‐ and K‐point…
The fission cross section of 235U has been measured with a nominal resolution of 1 nsec/m from 20 eV to 100 keV. Structure is seen over the entire range with fluctuations as great as 40% in the range 10 to 100 keV. These measurements have an average absolute accuracy of 8% and are based upon the 6Li(n, α) cross sectio…
Maximally flat (MF) low-pass filters with multiple pairs of coincident or distinct imaginary axis zeros are investigated and compared with the all pole Butterworth filters. It is shown that for the same ordern, finite zero filters provide much sharper cutoff than Butterworth filters, and that the cutoff slope increase…
The transmission of normally incident electrons through aluminum, which has been vacuum deposited on a 75-Å aluminum oxide insulator has been measured for electrons of energy between 1 eV and 4 keV. Currents to the top layer (65 to 525 Å) and to the metallic bottom layer underlying the insulator were monitored with op…
Abstract We have demonstrated that good quality Raman spectra can be obtained from vulcanizates prepared from cis -l,4-polybutadiene. Furthermore, significant differences are seen in the spectra of extracted vulcanizates prepared from various recipes. Tentative assignments have been made for many of the following Rama…
Abstract Measurements have been made of the relaxation of stress and electrical resistivity of stretched carbon black-loaded vulcanizates throughout the elongation range up to break. Data were obtained for vulcanizates with a number of carbon blacks, varying in particle size and in structure. The influence of the degr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of silicon and germanium. XII. Transformation of disilane, trisilane, and n-tetrasilane with elementary bromine and chlorine in FreonFranz Feher, Peter Plichta, and Rolf GuilleryCite this: Inorg. Chem. 1971, 10, 3, 606–608Publication Date (Print):March 1, 1971Publi…
Thermogravimetric analyses of various waxes were made. This manner of assessment was evaluated critically.
Transmission electron microscopy and diffraction study of the homologous series of oxides Ti n O 2 n -1 (4≤ n ≤10) reveals that the structures of these oxides are derived from rutile by regular crystallographic shear on planes parallel to (121), as previously suggested by Andersson and Jahnberg (Arkiv Kemi. 21 (1963)…
The optical properties of evaporated rhodium films were investigated in the wavelength region from 150 to 2000 Å. The films were evaporated by electron bombardment and deposited at various rates onto glass substrates of different temperatures. Their optical constants were determined from reflectance measurements made…
Ultrasonic absorption and velocity measurements have been made in high-purity liquid sodium, potassium, rubidium, and cesium at temperatures from their melting points to 250°C. Corresponding classical absorption values have also been computed over these ranges of temperature. It has been found that the measured absorp…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProperties of Polystyrene-Polydimethylsiloxane Block CopolymersJohn C. Saam and F. W. Gordon FearonCite this: Ind. Eng. Chem. Prod. Res. Dev. 1971, 10, 1, 10–14Publication Date (Print):March 1, 1971Publication History Published online1 May 2002Published inissue 1 March 1971h…
A brief résumé of basic magnetism is followed by a consideration of the magnetization process in the absence of applied mechanical stress, in which the importance of internal stresses and inclusions is emphasized and which leads to the introduction of Néel's disperse field theory. The Rayleigh laws are interpreted in…
The ultraviolet circular dichroism spectra of human lysozyme are presented. Effects of pH and added inhibitor (N-acetyl-D-glucosamine) were examined and the results were compared with similar measurements of hen egg-white lysozyme. The near-ultraviolet CD spectral bands are substantially different in the human and hen…
Problems associated with the measurement of changes in the rate of wool growth are discussed. In particular, there are large errors due to the "emergence time" of the wool, that is the time required for newly keratinized portions of fibre to move out of the follicles to the point where they can be removed by clipping.…
Design equations for the most commonly used ferroresonant regulators and regulated rectifiers are derived. Expressions relating the physical size of the components and the short circuit characteristic of the circuit to the output power, frequency, input power factor, and voltage levels are developed. Frem these expres…
icd Mutants of Escherichia coli K-12, selected for their resistance to nalidixic acid, are deficient in isocitrate dehydrogenase.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and reactions of novel bridged dicarbollide complexes having electron-deficient carbon atomsM. Frederick Hawthorne and James N. FrancisCite this: Inorg. Chem. 1971, 10, 3, 594–597Publication Date (Print):March 1, 1971Publication History Published online1 May 2002Pu…
During the past two decades, improved understanding of the fundamental magnetic behavior of Fe-Ni alloys has made them one of the most versatile class of soft magnetic materials. No longer is the concern limited to high permeability and low coercfve force at room temperature. Alloys have now been custom-crafted to mee…