Materials Literature
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Inhibitors are available which effectively reduce the loss of metal because of corrosion occurring in the hydrochloric acid pickling baths. Selection of these inhibitors, however, must take into consideration the effect the inhibitor will have on scale dissolution. The optimum concentration of inhibitor must consider…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExtracellular thiaminase I of Bacillus thiaminolyticus. I. Purification and physicochemical propertiesJames L. Wittliff and Robert L. AirthCite this: Biochemistry 1968, 7, 2, 736–744Publication Date (Print):February 1, 1968Publication History Published online1 May 2002Publis…
Organic materials used as high-voltage electrical insulation are altered chemically and physically by corona discharges. The basic behavior of polyolefin and fluorocarbon resins were investigated under conditions of high electrical stress. The presence of corona subjects a material to ozone, acid, ultraviolet light, a…
Synthetic and very pure single crystals of nickel iodine boracite (Ni3B7O13I, NIB), up to 10 mm in their largest dimension grown by a chemical transport process were investigated, using a self-compensating recording balance under quasistatic conditions. Below 64°K ferromagnetic behavior in agreement with the results o…
The realistic boundary condition of the surface temperature varying with time is used in the heat transfer analysis of the solidification of a binary eutectic alloy system. The system occupies a semi-infinite region and consists of a solid zone, a freezing zone, and a liquid zone. The heat released in the freezing zon…
Abstract As a fundamental research of a calcined defluorinated phosphate containing a small amount of sodium, the system Ca3(PO4)2(tricalcium phosphate, T) - CaNaPO4(Rhenanite, R) was studied by high temperature X-ray diffraction, differential thermal analysis, etc., and the phase diagram determined. During heating, T…
Rare earth and yttrium orthoferrites, RFeO3, where R is Y, Yb, Ho, and Tb, have grown under hydrothermal conditions from 20 ml KOH and NaOH solutions at 375°C, ∼8000 psi, and Δt=30° in the 〈110〉 and 〈001〉 directions at rates as great as 6 mil/day. Ease of growth appears to be inversely related to the ionic radius of R…
N-acetylglucosamine was found to be a good repressor source for catabolite repression of the beta-galactosidase system in Escherichia coli. It was found capable of increasing the severity of repression by glucose or gluconate when included in the medium with either of these substrates. N-acetylglucosamine was shown to…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature dependence of the viscosity of organic glassesG. A. Von Salis and H. LabhartCite this: J. Phys. Chem. 1968, 72, 2, 752–754Publication Date (Print):February 1, 1968Publication History Published online1 May 2002Published inissue 1 February 1968https://pubs.acs.org/…
A review of those characteristics of the anisotropy found in thin Fe–Ni–Co films that are important from a practical viewpoint are presented. Previously published data are supplemented to form a composite ternary diagram of anisotropy field Hk as a function of composition for the alloy system Fe–Ni–Co for 250°C substr…
The typical aftereffect spectra of ferrites and related oxides could usually be classified as due to either ionic (and vacancy) or electron processes. The present status of the study of these phenomena is outlined especially from the point of view of the underlying microscopic mechanisms. As an illustration, the resul…
Abstract The pressure loss at the entrance of a capillary tube was studied as a means of characterizing viscoelastic fluids. Measurements of four polymer solutions were made and correlated with an equation of the form where D is the shear rate and where H ch and λ ch are a characteristic stress and a characteristic ti…
The chemical and magnetic structures of the alloy Pd2MnAl, determined from magnetic and neutron diffraction measurements, are described, and compared with results recently obtained for the alloys Pd2MnIn, Pd2MnSn, and Pd2MnSb. Pd 2 MnSn and Pd2MnSb have the Heusler (L21) structure, and are ferromagnetic with Curie tem…
Article The Influence of Crystal Structure on the Fluorescence of Oxidic Niobates and Related Compounds was published on February 1, 1968 in the journal Zeitschrift für Physikalische Chemie (volume 57, issue 3_6).
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSubstituted deuteroporphyrins. V. Structures, stabilities, and properties of nickel(II) complexes with axial ligandsByron D. McLees and Winslow S. CaugheyCite this: Biochemistry 1968, 7, 2, 642–652Publication Date (Print):February 1, 1968Publication History Published online1…
The surface energies of face·centred and body. centred cubic crystals have been calculated on the assumption that the atoms interact with pairwise potentials of either Morse or Mie type. The calculations take into account interactions between all neighbours and have been carried through for about 50 crystallographical…
A neutron-scattering experiment to look for spin-wave excitation-energy changes of magnetite at the transition point 119°K showed no such change. During this work we discovered, however, that the low-temperature structure gives rise to weak extra neutron-diffraction lines that can be indexed as (h, k, l±½) in cubic in…
CuCr 1+x Rh 1−x Se 4 with −1 < x ≦ 1 and CuCr1+xTi1−xS4 with 0 < x ≦ 1 show p-type metallic conduction and are ferromagnetic, while CuCr1+xTi1−xS4 with x<0 show n-type metallic conduction and no magnetic ordering at 4°K. From the magnetic and electrical properties, which indicate that Cu is monova…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTApproach to the separation of inductive and mesomeric effects in complexes of the types LMn(CO)5 and LMo(CO)5William A. G. GrahamCite this: Inorg. Chem. 1968, 7, 2, 315–321Publication Date (Print):February 1, 1968Publication History Published online1 May 2002Published inissu…
Abstract A natural rubber vulcanizate containing almost entirely monosulfidic crosslinks was oxidized in oxygen and with tert ‐butyl hydroperoxide. The changes in physical properties due to oxidation were followed by stress–strain measurements, and the changes in chemical structure were investigated with chemical prob…