Some stability relations of alunite
Hydrothermal solutions, advanced argillic-type alteration, alunite-kaolinite and alunite-muscovite compositional relations
Materials Literature
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Segregation and cation-ordering in sjögrenite and pyroaurite
Summary A specimen from Långban, Sweden, was found to consist largely of sjögrenite in which segregation and ordering of the metal cations had occurred, yielding an intergrowth of regions of two main types with compositions probably of or near Mg 2/3 Fe 1/3 (OH) 2 (CO 3 ) 1/6 (H 2 O) 0·4 and Mg 12/13 Fe 1/13 (OH) 2 (C…
Solvent Effects on the Preferred Conformation of Poly(ethylene glycols)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolvent Effects on the Preferred Conformation of Poly(ethylene glycols)Kang-Jen Liu and John L. ParsonsCite this: Macromolecules 1969, 2, 5, 529–533Publication Date (Print):September 1, 1969Publication History Published online1 May 2002Published inissue 1 September 1969https…
Circular dichroism of the “random” polypeptide chain
Abstract The circular dichroism (CD) spectrum of an unordered polypeptide chain does not correspond, as has been assumed heretofore, to that of a charged chain such as poly‐ L ‐glutamic acid or poly‐ L ‐lysine. The latter have been shown to have locally ordered structures with characteristic CD spectra. We have now ob…
Linear Antiferromagnetic Chains in Hexagonal ABCl3-Type Compounds (A; Cs, or Rb, B; Cu, Ni, Co, or Fe)
Magnetic properties of single crystal of CsCuCl 3 , CsNiCl 3 , RbNiCl 3 , CsCoCl 3 , and RbFeCl 3 were investigated by the measurements of magnetic susceptibilities, magnetic torques, ESR absorptions from liquid helium temperature to room temperature. The experimental results were interpreted in terms of linear antife…
Results of measurements of cement plant dust
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Testing hardened Portland cement concrete by microscopy
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Bibliography
International symposia on cement chemistry
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Infrared spectrometry. A research technique in cement chemistry
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Requirements of prepared concrete as regards transport, placing and compacting
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5th colloquium of cement plant managers and technicians
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Under what conditions can a glass be formed?
Summary Generally substances are more stable in a crystalline than in a glassy state. Therefore, to form a glass, crystallization must be bypassed. Under certain conditions, the melts of many substances can be cooled to the glass state. Whether or not the melt of a given material forms a glass is determined principall…
Multiple Scattering, the Glauber Approximation, and the Off-Shell Eikonal Approximation
It is pointed out that in potential theory the validity of the Glauber approximation for high-energy scattering from a composite system implies a high degree of cancellation in the multiple-scattering series for the same process: The off-shell contribution to double scattering must be precisely cancelled by the sum of…
Carbonado: Natural Polycrystalline Diamond
Carbonados are porous aggregates of mostly xenomorphic diamond crystallites ranging in diameter from a fraction of a micron to over 20 microns. Crystalline inclusions (up to 3 percent) occur in the pores of the crystallites and consist mainly of orthoclase and small amounts of other igneous, metamorphic, and secondary…
Capillary Flow of Cholesteric and Smectic Liquid Crystals
It is shown theoretically that the motion of liquid crystals through capillaries may resemble that of a plug, the velocity profile being flat rather than parabolic.Received 16 June 1969DOI:https://doi.org/10.1103/PhysRevLett.23.372©1969 American Physical Society
Electrochemistry of copper, silver, gold, gallium, indium, and thallium in fused AlCl3–NaCl–KCl eutectic
The electrochemistry of copper, silver, gold, gallium, indium, thallium, and their ions, and of chlorine and bromine in fused AlCl 3 –NaCl–KCl was investigated by electromotive force (e.m.f.) and voltam-metric techniques. Univalent oxidation states were observed for all the metals. In addition, copper was further oxid…
Raman Spectrum of Crystalline Lithium Nitrate
Polarized Raman spectra of an anhydrous single crystal of LiNO3 have been obtained under optimum experimental conditions. The internal vibrations of the nitrate ion are observed as follows: ν4(Eg) = 735.4, ν1(A1g) = 1071.0, and ν3(Eg) = 1384.6cm−1; these frequencies are essentially independent of the cation in the hos…
Magnetic Properties of DyPt3 and DyIn3
Neutron-diffraction measurements made on powder samples of the intermetallic compounds, DyPt3 and DyIn3, show that these compounds exhibit antiferromagnetic ordering below Néel temperatures of 13.2° ± 0.3°K and 24° ± 0.5°K, respectively. The magnetic reflections from DyPt3 can be indexed on a doubled chemical cell of…
Low-Temperature Thermal Conductivity of Impure Insulators
The low-temperature thermal transport properties of an insulating crystal with an arbitrary concentration of randomly located phonon scattering centers are found for slab geometry. The phonon distribution function, the distribution of temperature, the Kapitza resistance at the boundaries, and the heat flux are evaluat…