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Shear flocculation of chromite fines in sodium oleate solutions
(ELSEVIER SCIENCE BV, 1996)
In this study, chromite fines were aggregated by stirring after the particle surfaces were made hydrophobic with sodium oleate. The effects of pH, sodium oleate concentration, stirrer speed and flocculation time were ...
Strategies for reducing solvent toxicity in extractive ethanol fermentation
(HUMANA PRESS INC, 1998)
Extractive fermentation is a widely preferred technique in which the products of fermentation are removed from the fermentation medium by a proper solvent, in order to avoid the inhibitory effects of the products. In this ...
Behaviors of acrylamide/maleic acid hydrogels in uptake of some cationic dyes from aqueous solutions
(MARCEL DEKKER INC, 1996)
Acrylamide/maleic acid (AAm/MA) hydrogels prepared by irradiating with gamma-radiation were used in experiments on swelling, diffusion, and uptake of some cationic dyes such as basic red 9 (BR-9), basic green 4 (BG-4), ...
Effect of deferoxamine and sympathectomy on vasospasm following subarachnoid hemorrhage
(KARGER, 1996)
We examined the effects of subarachnoid hemorrhage (SAH) and treatment with deferoxamine (DFO) or sympathectomy on vascular smooth muscle function, as well as the underlying mechanisms involved, by recording the responses ...
Effects of sympathectomy on endothelin-1 and histamine responses of rabbit carotid artery
(ELSEVIER SCIENCE INC, 1997)
1. The effects of chronic sympathectomy on contractile responses of rabbit common carotid artery was studied in vitro. 2. Endothelin-1 (ET-I), histamine, KCl and papaverine concentration-response curves of sympathectomized ...
Effect of the hydrophobic fraction and particle size in the collectorless column flotation kinetics
(ELSEVIER SCIENCE BV, 1997)
In order to investigate the particle size effect of a highly hydrophobic mineral (talc), different size fractions were floated in a column flotation cell to obtain the effect of flotation-rate constants (k) on the kinetics ...
Structure of exo, endo, exo, exo-2,3,5,6-tetrabromonorbornane
(OLDENBOURG VERLAG, 1999)
The compound, C7H8Br4, crystallizes in the triclinic space group P (1) over bar with a = 6.280(2) Angstrom, b = 6.646(3) Angstrom, c = 12.385(6) Angstrom, alpha = 96.58(4)degrees, beta = 90.50(3)degrees, gamma = 101.10(2)degrees, ...
A simple method for calculating the force fields of M(CO)(5)L and square pyramidal M(CO)(5) complexes
(PERGAMON-ELSEVIER SCIENCE LTD, 1996)
A relationship between the interaction constant of cis-COeq-COax and the observed (CO)-C-12-O-16 stretching frequencies has been derived to solve the secular equations for M(CO5)L and M(CO)(5) complexes which belong to ...
Placental teratoma - A case report
(ELSEVIER SCI IRELAND LTD, 1998)
We present a rare case of a placental teratoma found within the fetal membranes of an otherwise normal placenta. Lack of a recognizable umbilical cord and no recognizable skeletal development are used as differential ...
Removal of water-soluble cationic dyes with TriSyl silicas
(SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY, 1998)
In this study, the adsorption of certain water-soluble cationic dyes, (basic blue 9, basic blue 12, basic blue 17, brilliant cresyl blue, janus green B, basic green 4, basic violet 1, basic violet 3, and thionin) onto ...