Materials Literature
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The application of explosion-bonded aluminum-to-steel welding transition joints on marine vessels is discussed. Evaluation of this material's suitability for joining aluminum superstructures to steel decks is reviewed in detail. Galvanic corrosion is demonstrated to be negligible, thereby providing significant savings…
Within 5 to 10 min at 37 C, bacteria infected by bacteriophage phiX174 acquire the ability to exclude superinfecting phiX particles from reproducing themselves. The superinfecting phage are blocked at a stage prior to synthesis of the parental replicative form molecule; the superinfecting deoxyribonucleic acid remains…
Abstract The slip line pattern of molybdenum single crystals deformed in tension at temperatures between 293 and 573 °K ( T / T m = 0.1 to 0.2) was systematically investigated using optical and electron microscopy. The transition from parabolic stress‐strain behaviour to three‐stage hardening which occurs in a transit…
Uniaxial stress dependence of the low-temperature thermal conductivity of lightly-doped p -type Ge and Si is calculated in detail by taking account of elastic and inelastic phonon scattering by holes bound to acceptor impurities. The stress modifies the temperature dependence as well as the magnitude of the thermal co…
Abstract New developments in the image reconstruction procedures for electron microscopy proposed by us are reported here. Reconstruction procedures with visible light for complex functions are described. In one variant of the procedure bright field micrographs for various tilting of the primary beam are combined. It…
Atomic lifetimes have been measured for the series 3 snf 3 F perturbed by 3 p 3 d 3 F in Al II and for the series 2 snd 1 D perturbed by 2 p 21 D in Be I by the beam-foil technique. The experimental results are compared with theoretical data based upon configuration interaction calculations, and discrepancies are disc…
Abstract A concerted study of poly(vinyl chloride), chlorinated poly(vinyl chloride), and poly(vinylidene chloride) polymers by spectroscopy, thermal analysis, and pyrolysis‐gas chromatography resulted in a proposed mechanism for their thermal degradation. Polymer structure with respect to total chlorine content and p…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structures of thiocyanatopentacyanocobaltate(III) and related complexesHarry B. Gray and Diane F. GuttermanCite this: J. Am. Chem. Soc. 1971, 93, 14, 3364–3371Publication Date (Print):July 1, 1971Publication History Published online1 May 2002Published inissue 1 Ju…
A linear relation is established between the cosine of the contact angle and the temperature of a liquid metal sessile drop resting on a ceramic substrate. This relation is demonstrated for many liquid metal/ceramic systems. The work of adhesion and the effects of surface roughness, porosity, chemical reactions, and s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and molecular structure of hydridonitrosyltris(triphenylphosphine)iridium(I) perchlorate, [IrH(NO)(P(C6H5)3)3][ClO4]James A. Ibers and D. M. P. MingosCite this: Inorg. Chem. 1971, 10, 7, 1479–1486Publication Date (Print):July 1, 1971Publication History Published onli…
The contributions of inelastic and elastic phonon scattering by neutral donors to the low-temperature thermal resistance of Ge are calculated in detail. It is shown that the inelastic and elastic scattering mechanisms make almost the same contribution to the thermal resistance in Sb-doped Ge. The sum of the both contr…
Abstract The variations in flow stress of FeCo : 2 at% V as a function of test or quench temperature exhibit a maximum near the critical temperature for ordering, T c . Transmission microscope study of thin foils reveals the existence of paired dislocations not only at temperatures below T c but also at temperatures…
The influence of a variety of water-insoluble monomolecular films on the evaporation rate of 50 to 500 μ diameter water drops was determined at 25C and 50% relative humidity. The results indicate that only linear polar molecules capable of close packing can form monomolecular films which inhibit the gas transport of w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure of sodium oxide-4 magnesium oxide-15 aluminum oxide, a variant of .beta.-aluminaMax Bettman and Leslie L. TernerCite this: Inorg. Chem. 1971, 10, 7, 1442–1446Publication Date (Print):July 1, 1971Publication History Published online1 May 2002Published inissue 1 July…
Antiferromagnetism in hcp Fe-Mn alloys (17.8, 25.9 and 28.6 at %Mn) was investigated by means of Mössbauer effect and neutron diffraction measurements. Néel temperatures and internal magnetic fields at 0°K were determined to be 230°K and 16 kG, respectively, over the composition range of the measured alloys. Consequen…
Twist boundaries have been observed on {001} surfaces between crystals of MgO and CdO smoke. Measurements of the angles of twist across several hundred of these boundaries have revealed preferences for boundaries at 16.5°, 22.6°, and 37.3° in MgO and 22.8°, 28.5°, and 37.1° in CdO. These angles agree with those predic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrgano (dipyridyl) nickel complexes. II. Stabilities of olefin-nickel bonds in olefin-cooridinated dipyridylnickel and dialkyl (dipyridyl) nickel complexesTakakazu Yamamoto, Akio Yamamoto, and Sakuji IkedaCite this: J. Am. Chem. Soc. 1971, 93, 14, 3360–3364Publication Date (…
Abstract Initial velocity kinetic studies of adenosine diphosphoglucose pyrophosphorylase from Rhodospirillum rubrum yield intersecting reciprocal plots indicating that the kinetic mechanism of this enzyme is sequential. ATP-pyrophosphate-32P isotope exchange at equilibrium studies indicate that the kinetic mechanism…
The current model of amorphous semiconductors is applied to give a description of the electrical behaviour of liquids which show a gradual transition from a semiconducting to a metallic behaviour as some parameter such as temperature or volume is changed. These include mercury at high temperatures, Te-Se alloys and ch…
An improvement is described in the automatic procedure for solving crystal structures incorporated in the computer program LSAM . The development of signs from an initial set containing symbols is carried only as far as is necessary to establish strong relationships between the symbols. The information so gained is us…