Materials Literature
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Abstract Phosphate rock (PR) has been used for decades as a P fertilizer for plants. Apatite is a basic P mineral that could have agronomic value as a source of Ca. Little information is available in literature on this possibility, however. A greenhouse experiment (6 wk) was conducted to compare the Ca value of six PR…
Potentiality of C. tropicalis and D. polymorphus, to produce surface active compounds (bioemulsifiers/biosurfactants) during shake cultivation on hexadecane and oily waste was studied. Better emulsification activity, specific towards aromatic hydrocarbons, was observed with C. tropicalis culture broth. Emulsification…
Abstract Bis(1,2‐diaryl‐1,2‐ethylenedithiolato)metal(0) complexes ( 1 ; metal = Ni, Pd, and Pt) react with quadricyclane (Q) to give selectively 1:1 adducts which are identical with the adducts between 1 and norbornadiene (NBD). In the adducts, two sulfur atoms of the different dithiolato ligands are added to one of t…
A method is described for the simultaneous determination of urinary HMMA, 5-HIAA and HVA by HPLC with electrochemical detection. The method was evaluated over an 8-month period and has thus far identified 2 cases of phaeochromocytoma, 1 case of neuroblastoma and 2 of carcinoid tumour.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of alkali-metal cations on silicon exchange and silicon-29 spin relaxation in alkaline silicate solutionsA. V. McCormick, A. T. Bell, and C. J. RadkeCite this: J. Phys. Chem. 1989, 93, 5, 1737–1741Publication Date (Print):March 1, 1989Publication History Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAzophenolic acerands: amine-selective coloration and crystal structure of a piperidinium saltexTakahiro Kaneda, Shinichi Umeda, Yuka Ishizaki, Hsien Saw Kuo, Soichi Misumi, Yasushi Kai, Nobuko Kanehisa, and Nobutami KasaiCite this: J. Am. Chem. Soc. 1989, 111, 5, 1881–1883Pu…
The thermomechanical processes that occur during thermal bonding of isotactic polypropylene are discussed. Each process is described and the magnitude of each effect estimated. The results suggest that flow is important to the formation of a good bond. Flow is facilitated by line pressure and is an important means of…
The thermal expansion of WC from 20 to 900 K was measured in the a and c axial directions using high‐resolution neutron powder diffraction. Third‐order polynomials have been calculated from the expansion curves. The results complement and are compared with prior data in the 293 to 900 K region.
In tetragonally distorted ferroelectric ceramics a regular domain pattern develops, which allows the grain to keep its shape according to its clamping condition. In coarse grained ceramic the adjustment of the shape is possible in three dimensions, in fine grained ceramic and in thin films a two dimensional adjustment…
Abstract Three pedons of Spodosols or Spodosol‐like soils from Quebec and Ontario containing a considerable amount of acid‐oxalate extractable Al, Fe, and Si were examined in detail by additional selective chemical dissolution, x‐ray diffraction, infrared absorption, and Mössbauer methods to characterize noncrystallin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structures of the Ru2(RNNNR)4, Rh2(RNCHNR)4, and Co2(RNNNR)4 molecules: ordering and separation of M-M .delta.* and .pi.* orbitalsF. Albert Cotton and Xuejun FengCite this: Inorg. Chem. 1989, 28, 6, 1180–1183Publication Date (Print):March 1, 1989Publication Histor…
This reference book, aimed at engineers, managers and regulators, provides information on design criteria, operating requirements and implementation procedures for all hazardous waste incineration equipment and facilities. It also defines current regulations and describes ancillary systems and equipment, such as waste…
The dependence of enhancement of the infrared bands by thin Ag films on the molecular structure of the organic compound was investigated. A different enhancement behavior for the three isomers—ortho-, meta-, and paranitrobenzoic acids—was observed and accounted for by structural features. The presence of the ionized s…
Some new, ring-substituted phthalocyanines have been synthesized and underwent preliminary testing for photodynamic activity using the colony forming ability of Chinese hamster cells in culture as an endpoint. Using 4-(3-N,N-diethylaminopropyl)phthalonitrile as a precursor, the previously unknown metal-free 2,9,16,23-…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparative study of the surface hydroxyl groups of fumed and precipitated silicas. I. Grafting and chemical characterizationM. Zaborski, A. Vidal, G. Ligner, H. Balard, E. Papirer, and A. BurneauCite this: Langmuir 1989, 5, 2, 447–451Publication Date (Print):March 1, 1989Pu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvaluation of interactions in blends of ethylene-vinyl acetate copolymers with poly(vinyl chloride) using model compoundsC. A. Cruz-Ramos and D. R. PaulCite this: Macromolecules 1989, 22, 3, 1289–1300Publication Date (Print):March 1, 1989Publication History Published online1…
Effects of a depth-dependent specimen potential on x-ray photoelectron spectroscopic data were analyzed using both numerical simulation and experimental spectral data. The analysis shows that when the potential gradient near the specimen surface is larger than 0.1 V/nm, it will cause significant broadening of the phot…
The factors which determine or exert an influence on the zero point of charge (ZPC) of soils were examined, using 26 variable charge soils from Thailand and Japan. ZPC was mainly correlated with amorphous A1 for the Japanese volcanic ash soils, and with crystalline Fe oxides for the Thai Oxisols and Ultisols. Besides,…
A flow instability has been observed in a rectangular thin conducting wall duct in MHD experiments at ANL’s ALEX facility. It developed in a side layer jet attached to a side wall parallel to the applied B-field. The nature of the instability resembles very strongly that of a classic laminar instability in ordinary fl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structure of cobalt phthalocyanine: a charge density studyB. N. Figgis, E. S. Kucharski, and P. A. ReynoldsCite this: J. Am. Chem. Soc. 1989, 111, 5, 1683–1692Publication Date (Print):March 1, 1989Publication History Published online1 May 2002Published inissue 1 M…