Materials Literature
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An absolute method of seam-strength testing is described. The effects of fabric type and gauge length on seam strength are examined. The effects of the type of sewing thread used and various measures of thread strength on the accuracy of seam-strength prediction are also investigated. A simple method of determining th…
Using a crystalline beryllium specimen, the excitation of plasma oscillation by X-rays was confirmed by examining the inelastic scattering for chromium K β 1 and copper K β 1 rays at various observation angles. The X-rays suffered an energy loss, which was equal to the plasmon energy of the solid and also satisfied th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOsmotic properties of divalent metal polystyrenesulfonates in aqueous solutionJacob A. Marinsky, M. Reddy, and A. SarkarCite this: J. Phys. Chem. 1970, 74, 22, 3891–3895Publication Date (Print):October 1, 1970Publication History Published online1 May 2002Published inissue 1…
Two MOS photomatrix configurations, voltage sampling and recharge sampling, have been compared with regard to sources of fixed-pattern noise. Voltage sampling provides a high-amplitude low-impedance photosignal, with FPN primarily due to threshold variation in the amplifying MOST at each element. Recharge sampling is…
Tetrahedral and octahedral cobalt(II), and square and octahedral nickel(II) complexes of 1,2-bis(2′-imidazolin-2′-yl)benzene, 1,2-bis(2′-imidazolin-2′-yl)ethane, and some imidazoline ring methyl substituted ligands are reported. The structures are confirmed by three X-ray structural analyses, magnetism, and electronic…
The rate and equilibrium of adsorptions of DDT, dieldrin, and heptachlor by illite, kaolinite, and montmorillonite from aqueous pesticidal solutions are evaluated using the batch technique under laboratory conditions. The adsorption of each of these three pesticides at an initial concentration of 100 μg/l by kaolinite…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron paramagnetic resonance identification of a nickel(III) compound produced by electrochemical oxidation of nickel(II) tetraphenylporphyrinAlexander Wolberg and Joost ManassenCite this: Inorg. Chem. 1970, 9, 10, 2365–2367Publication Date (Print):October 1, 1970Publicat…
The absorption spectrum of thin films of PuCl3 was measured at 298, 77, and 4°K in the range 6000–34 000 cm−1. Results were compared to earlier work in LaCl3 :Pu3+, and a number of new assignments were made. Electrostatic, spin–orbit, and configuration-interaction parameters were obtained by direct diagonalization of…
The iodine sorption test is a convenient though empirical method of measuring cellulose accessibility, but results show considerable variability. The relative importance of some experimental factors with respect to reproducibility of test results was, therefore, examined. Agitation during equilibration and use of a st…
The results of a preliminary study on the dosimetric characteristic of three different grades of commercial sintered beryllium oxide are reported. Among useful features of this promising thermoluminescent material a very low sensitivity to thermal neutrons (0.2 gamma -rads equivalent per 10 10 neutrons cm -2 ), a fair…
A series of crystalline metal glycerolato complexes has been prepared. The preparation of the cobalt, zinc, manganese, and iron complexes [(1 )-(4)] was achieved by heating (above 110º) glycerol with metal acetates, carbonates, oxalates, oxides, or hydroxides. The structure of (1) has been determined by X-rays and con…
Electron microscopic studies using thin sections revealed that Thermus aquaticus has a structure similar to that of most other gram-negative bacteria. The cell envelope is tripartite: plasma membrane, thin middle layer, and a thicker and irregular outer layer. The outer layer appears to be joined to the plasma membran…
The dynamic characteristics of a gas bubble situated in a viscoelastic fluid of three-parameter Oldroyd model is analytically investigated. Consideration is given to the influence of the thermodynamic process of the gas inside the bubble. An equation is derived which governs the timewise variation of the bubble size.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal decomposition of barium sulfate to sulfur dioxide for mass spectrometric analysisBen D. Holt and A. G. EngelkemeirCite this: Anal. Chem. 1970, 42, 12, 1451–1453Publication Date (Print):October 1, 1970Publication History Published online1 May 2002Published inissue 1 O…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and molecular structure of maltose monohydrateGary J. Quigley, A. Sarko, and R. H. MarchessaultCite this: J. Am. Chem. Soc. 1970, 92, 20, 5834–5839Publication Date (Print):October 1, 1970Publication History Published online1 May 2002Published inissue 1 October 1970ht…
A complete classification of representations of SO(4, 2) with infinitesimal generators SAB, characterized by the representation relation {SAB, SAC} = −2agBC, and their extension by parity have been determined. The possible values of a are a = 1 − S2, S = 0, 12, 1, 32, 2, ⋯. These representations have then been reduced…
Accurate lattice parameter, hydrostatic density and Curie temperature measurements have been made on lithium tantalate single crystals grown from different melt compositions. Crystal compositions were determined by comparing crystal Curie temperatures with those determined from well reacted ceramic specimens of known…
The dependence of the equilibrium configurations of a thin single-crystalline epitaxial film, on the strengths of substrate-overgrowth and overgrowth-overgrowth bonds and the interfacial misfit is calculated neglecting substrate deformations. Previous analyses of the system were based on a one-dimensional model, allow…
W M Stacey, Jr London: Academic Press 1969 pp vii + 186 price £6 1s Timely, well written but expensive are the reviewer's immediate reactions to this publication. Enlarging on these remarks, in reverse order, the book costs £6 1 s and has less than 200 pages; whilst quantity does not mean quality this seems a great pr…
A phenomenological theory is presented of the magnetic properties of two-component alloys, one of whose components has a permanent magnetic moment, and the other an exchange-enhanced paramagnetic susceptibility. The paramagnetic susceptibility, magnetic-ordering temperature, and magnetization at low temperature are di…