Materials Literature
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Because of its high magnesium content and relatively small anount of silica, iron and aluminum, the weathering process of serpentine rock is very different from other aluminosilicate rocks. Generally it has been thought that podsolization does not occur in the soil derived from this rock.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of complex formation between hexacyanoferrate(III) ions and iron(III) to form FeFe(CN)6 (Prussian brown)R. G. Walker and Kenneth O. WatkinsCite this: Inorg. Chem. 1968, 7, 5, 885–888Publication Date (Print):May 1, 1968Publication History Published online1 May 2002Pu…
The temperature and strain rate dependence of the flow stress of ordered and disordered polycrystalline Cu3Au was investigated in the range 20°–420°K. A thermally activated deformation mechanism was observed at temperatures less than ∼100°K and ∼340°K for the ordered and disordered material respectively. For ordered C…
THE USE of dermal grafts in head and neck surgery to protect the carotid artery from "blow outs" and to protect the esophageal suture line against fistulae was introduced by Corso and Gerald in 1963.<sup>1</sup>These authors noted in their report that when there was skin breakdown over the graft it became epithelized…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTShift in Optimal Power Input in an Ultrasonic ReactionScott Fogler and Deveraux BarnesCite this: Ind. Eng. Chem. Fundamen. 1968, 7, 2, 222–226Publication Date (Print):May 1, 1968Publication History Published online1 May 2002Published inissue 1 May 1968https://pubs.acs.org/do…
The cross sections for the reactions 111Cd(n,n′)111mCd, 112Cd(n,2 n)111mCd, 87Sr(n,n′)87mSr, 58Ni(n,p) 58m + gCo, 58Ni(n,2n) 57Ni, and 58Ni[n,d) + (n,np) + (n,pn)] 57Co have been measured by the activation method. Measurements were performed in the energy regions from 2.2 to 3.5 MeV and from 13.7 to 14.8 MeV. The cros…
Abstract A series of model polyurethanes and polyureas, a polyamide, and a polyimide were prepared by reacting 4,4′‐diphenylmethane diisocyanate or polyisocyanates having similar polybenzyl structures with aliphatic or aromatic coreactants. Thermogravimetric analyses indicated that the flammability of the polymers was…
Abstract Viscoelastic properties of uncrosslinked 1,2‐polybutadiene (91.5% vinyl, 7.0% cis , 1.5% trans , number‐average molecular weight 99,000) were studied by dynamic shear measurements between 0.15 and 600 cps (torsion pendulum and Fitzgerald transducer) and shear creep measurements over time periods up to 3.7 × 1…
The amino acid composition of subtilisin Carlsberg has been determined and is in good agreement with the 274 residues found by sequence studies in the protein.From a tryptic hydrolysate, it was possible to resolve the peptides into a series of fractions by gradient elution from Dowex 50.After further purification, the…
Abstract A study was made of the gamma‐ray‐induced copolymerization of tetrafluoroethylene and 3,3,3‐trifluoropropene. Copolymerizations were carried out at 100°C. and 5000 atm. pressure and at 21°C. and various pressures up to 8000 atm. The reactivity ratios calculated from the composition data indicate that the prop…
Abstract Hyperelectronic polarization may be viewed as the electrical polarization in external fields due to the pliant interaction with the charge pairs of excitons, in which the charges are molecularly separated and range over molecularly limited domains. It is particularly pronounced in molecular solids composed of…
It is shown that the threshold of rectified diffusion according to the Hsieh and Plesset solution is in fact frequency dependent when the inertial terms in the equation of motion of the bubble are not neglected. A comparison is made between the threshold calculated from the modified Hsieh and Plesset solution and that…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGaseous Diffusion and Flow in Commercial Catalysts at Pressure Levels above AtmosphericC. N. Satterfield and P. J. CadleCite this: Ind. Eng. Chem. Fundamen. 1968, 7, 2, 202–210Publication Date (Print):May 1, 1968Publication History Published online1 May 2002Published inissue…
The action of sodium nitrite as a corrosion inhibitor for mild steel in neutral aqueous solution has been studied in relation to the surface preparation of the steel, the presence of aggressive salts in the solution, and temperature. Surface preparation of mild steel has little effect on the minimum concentration of n…
Abstract Electron and phase microscopy results show that most elastomer blends are heterogeneous, even after extended mixing. Blends of SBR/BR and SBR/EBR, however, are homogeneous. DTA data support these conclusions. Carbon black distribution studies indicate that carbon black does not transfer between elastomers dur…
Interferometric study of OH emission source in W3 /IC 1795/ region, processing data on digital computer
Abstract The spontaneous polymerization of hydroxymethacrylate monomers by the layer aluminosilicate montmorillonite is reported. Saturation of montmorillonite by acrylic monomers gives interlayer complexes of three types, only one of which is susceptible to spontaneous polymerization. Electron‐donating sites situated…
The dielectric relaxation in NaNO 2 is analyzed on the basis of the time dependent statistics of the Ising system, where the Ising variable corresponds to two stable orientations of the polarization carried by each molecular unit. The dynamical susceptibility is calculated with the random phase approximation in terms…
The theory of electronic Raman scattering for trivalent rare-earth ions in crystals is formulated in a general way. It is shown that vibronic coupling is unimportant. The antisymmetric part of the scattering tensor, which vanishes for vibrational Raman scattering, turns out to be dominant for several electronic Raman…
Poly-beta-hydroxybutyrate (PHB) from various representative strains of the genera Azotobacter, Beijerinckia, and Derxia was isolated and characterized. During growth in shake culture, with glucose as a carbon and energy source, and molecular nitrogen as a nitrogen source, increase in dry weight appeared linear, and PH…