Dissolution kinetics of calcium carbonate in sea water; III, A new method for the study of carbonate reaction kinetics
For part 2, see Am. Jour. Sci., Vol. 272, p. 840, 1972; see also this Bibliography, Berner and Morse, 05
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Square-planar transitioin metal complexes with tetradentate thioiminato Schiff base ligands
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSquare-planar transitioin metal complexes with tetradentate thioiminato Schiff base ligandsPatricia R. Blum, Richard M. C. Wei, and Sue C. CummingsCite this: Inorg. Chem. 1974, 13, 2, 450–456Publication Date (Print):February 1, 1974Publication History Published online1 May 2…
Notizen: Zur Struktur ternärer Chalkogenide des Thalliums mit Aluminium, Gallium und Indium, XXII* / On the Structure of Ternary Thalliumchalkogenides with Aluminium, Gallium and Indium, XXII*
Article Notizen: Zur Struktur ternärer Chalkogenide des Thalliums mit Aluminium, Gallium und Indium, XXII* / On the Structure of Ternary Thalliumchalkogenides with Aluminium, Gallium and Indium, XXII* was published on February 1, 1974 in the journal Zeitschrift für Naturforschung B (volume 29, issue 1-2).
Proton spin-lattice relaxation in TMMC [(CH3)4NMnCl3]
We examine the temperature and frequency dependence of the proton spin-lattice relaxation rate $\frac{1}{{T}_{1}}$, as a probe of the electron-spin dynamics of the quasi-one-dimensional exchange-coupled paramagnet TMMC [${(\mathrm{C}{\mathrm{H}}_{3})}_{4}$ NMn${\mathrm{Cl}}_{3}$]. The rate is measured from 5.5-16 MHz…
Crystallization of poly(ethylene terephthalate) induced by inorganic compounds. I. Crystallization behavior from the glassy state in a low‐temperature region
Abstract The kinetics of isothermal crystallization from the glassy state at low temperatures and the morphology of poly(ethylene terephthalate) (PET) filled with additives are reported. Talc, kaolin, silicon oxide, and titanium oxide have been used as fillers; they act as effective nucleating agents for PET. The over…
Synthesis and characterization of polyaryloxyphosphazenes
Abstract The synthesis, dilute solution characterization, and thermal analysis of seven polyaryloxyphosphazenes are described. Synthesis is accomplished by the ring‐opening polymerization of hexachlorocyclotriphosphazene at 245°C, followed by reaction of polydichlorophosphazene with sodium aryloxide salts in solution…
Evidence for Electron Transfer Reactions Involved in the Cu2+-dependent Thiol Activation of Fat Cell Glucose Utilization
Previous studies indicated that the ability of thiols to mimic insulin action on fat cell glucose oxidation and lipolysis was dependent on Cu2f.Evidence now presented indicates that HzOz formed by the reaction of thiols, Cu2+, and 02 mediates the effects of these agents on isolated fat cells.Oxidation of thiols to the…
An Algorithm for the Energy Deposition by Fast Electrons
An algorithm to calculate the energy deposition distribution produced by monoenergetic fast electrons normally incident on the semi-infinite absorber is given. While the algorithm is based on an elementary relation that is also a basis of similar work by Kobetich and Katz, higher accuracy has been attained and the reg…
X-ray photoelectron studies of thorium and uranium
The X-ray induced photoemission from both clean and deliberately oxidized thorium and uranium surfaces is described. The results are compared with previously reported XPS and X-ray emission measurements of electron binding energies for the heavy elements. While agreement between photoelectron and X-ray spectroscopic r…
Reactions of alkylmercuric halides with sodium borohydride in the presence of molecular oxygen
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of alkylmercuric halides with sodium borohydride in the presence of molecular oxygenCraig L. Hill and George M. WhitesidesCite this: J. Am. Chem. Soc. 1974, 96, 3, 870–876Publication Date (Print):February 1, 1974Publication History Published online1 May 2002Publish…
Raman spectra of orthorhombic sulfate single crystals I: K2SO4, Rb2SO4, Cs2SO4 and Tl2SO4
Abstract In order to confirm the assignment of the Raman active internal modes of K 2 SO 4 and structurally related crystals, the Raman spectra of oriented cyrstals have been recorded. Using the relative integrated intensities of the bands as data, the transferability of the Raman tensors of the free SO ion to the cry…
Interlamellar Adsorption of Carbon Dioxide by Smectites
Abstract The adsorption of CO 2 at low temperature (~ -70°C) on thin films of homoionic smectites was studied by X-ray diffraction and by i.r. absorption. An increase in the d 001 spacings of these clay films upon adsorption of CO 2 was observed. In addition, a dichroic effect was readily discernible by comparing the…
Effect of antiphase boundaries on the magnetic properties of Cu-Mn-Al Heusler alloys
The magnetic properties of Heusler alloys of approximate composition Cu2MnAl have been studied by Lorentz microscopy. as a function of composition, heat treatment and plastic deformation. Magnetic domain walls have been observed to be pinned at antiphase boundaries. The strength of pinning varies with composition and…
Internal and External Morphology of Tubular and Spheroidal Halloysite Particles
Abstract Tubular halloysite from Wagon Wheel Gap, Colorado and spheroidal halloysite from Redwood County, Minnesota were examined by transmission electron microscopy. Clay samples were prepared by the following techniques: drop-mounted suspension on carbon support films; thin sections of clay in Araldite epoxy resin;…
Antiferromagnetism in γ-Phase Mn-Ir Alloys
Crystallographic and magnetic properties were studied in the disordered γ-phase Mn 1- x Ir x (0.05< x <0.35) alloys. In Mn rich alloys, tetragonal distortion with axial ratio c / a >1 occurs at a temperature below their Néel temperature, T N . The tetragonal distortion temperature, T d in the antiferromagnetic ordered…
Interpretation of the Kaolinite‐Mullite Reaction Sequence from Infrared Absorption Spectra
The phases in the kaolinite‐mullite reaction sequence were reexamined by ir absorption spectrophotometry. Particular attention was paid to the controversial intermediate Al‐containing phases. Amorphous materials were leached from fired kaolinite samples with NaOH to help identify crystalline phases. Metakaolinite part…
X-ray photoelectron spectroscopy of tetraphenylporphin and phthalocyanine
The x-ray photoelectron spectra of tetraphenylporphin, phthalocyanine and their copper complexes were measured. The copper complexes show a single nitrogen 1s photoline, whereas the metal free bases give rise to a doublet nitrogen 1s photoline. The central pyrrole and aza nitrogens in the metal free bases could be ide…
Computation of structures of homologous proteins. .alpha.-Lactalbumin from lysozyme
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComputation of structures of homologous proteins. .alpha.-Lactalbumin from lysozymeP. K. Warme, F. A. Momany, S. V. Rumball, R. W. Tuttle, and H. A. ScheragaCite this: Biochemistry 1974, 13, 4, 768–782Publication Date (Print):February 1, 1974Publication History Published onl…
Scanning limitations of liquid-crystal displays
The scanning limitations of rms-responding liquid-crystal devices as influenced by device characteristics, the type of matrix addressing scheme, and waveform tolerances are quantified in this paper. An rms selection scheme that yields a greater number of scanned lines than a 3:1 selection scheme is presented and analy…
Characterization and Stabilization of Metastable Tetragonal ZrO 2
Fine single‐domain and polydomain particles of tetragonal ZrO 2 were prepared by hydrothermal and heat treatment of ZrO 2 · n H 2 O. The particles were characterized by X‐ray diffraction, electron microscopy, NMR, mass spectrometry, and ir spectroscopy. The main impurity in the samples was 1 to 2 wt% OH − ions, most o…