A-K. J. Sallal, N. A, " Effect of Gibberellic Acid on Photosynthetic Electron Transport Reactions and Nitrogenase Activity of Anabaena Cylindrica " , "Microbios A Biomedical Reseach Jornal",Vol.78,No.1994, The Faculty Press, Cambrigde, Cambridge. England, 12/10/1993
Abstract:
Various concentrations of gibberellic acid (GA) were tested for there effects on photosynthetic reactions and dinitrogen-fixation (acetylene reduction) in anabaena cylindrica. The optimum concentration of GA for growth and oxygen evolution was 10-4 M, and NADP photoreduction was also enhanced. A pronounced effect was evident on the photosystem II-Hill reaction, while the effect on photsystem I-Mehler reaction was much less. A concentration of 10-6 M GA exerted some inhibition on growth and photosynthetic reactions, while 10-2 and 10-3 M concentrations led to complete lysis. The optimum concentration of GA for maximum nitrogenase activity was 10-5 M, which also incresed heterocyst differentiation.
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Nabil M. Eldurini an, " The Mechanisn of the Reaction of Molecular Bromine with Organosilicon Hydrides. " , "Jornal of chemical Society 1983",Vol.Perkin Trans. II,No.1983, The Chemical society, London, England, 07/17/1983
Abstract:
The kinetics of the bromination of 7 triarylsilanes and 14 other organosilicon hydrides by molecular bromine in CCl4 have been determined by stopped flow method. For triethylsilane, Arrhenius parameters have been measured in octane and CCl4, and solvent effects determined in other solvents of different polarity. The results accord with a molecular mechanism involving one molecule of bromine and one of the organosilicon hydride, with partial positive charge build-up on silicon in the transition state.
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Nabil M. Eldurini an, " Radical-Initiated Addition of Trialkylsilanes Across Alkene C=C Bonds " , "Jornal of organometallic chemistry",Vol.232,No.1982, Elsevier Sequoia S. A., Printed in Netherland, 12/21/1981
Abstract:
Difficulties in carrying out the free-radical addition reaction of trialkylsilanes (as 0pposed to trichlorosilane) to alkene C=C bonds are partly due to telomerization competing with the radical transfer step. This can be overcome by the use of a large excess of trialkylsilane, when good yields of adduct are obtained from mono-substituted and disubstituted alkenes.
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Nabil M. Eldurini an, " Molecular and Free Radical Bromination of Organosilicon Hydrides " , "Bulletin des Sociétés Chimiques Belges",Vol.91,No.5, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany, 07/25/1982
Abstract:
Few four-centre (as opposed to 6-centre) molecular reactions have been studied kinatically in solution: halogenation of organosilicon hydrides appears to follow a molecular route of this type, although considerable polar character may be developed in the transition state.
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Nabil M. Eldurini, S, " Adsorption of Carbaryl and Benomyl from Water by Jordanian Bentonite " , "Al-Mustansiriya Jornal of Science",Vol.21,No.2, Al-Mustansirsya University, Bagdad, Iraq, 03/22/2010
Abstract:
Abstract
The adsorption of the insecticide carbaryl and fungicide benomyl from water on Jordanian Bentonite has been studied. The results indicate that the adsorption process follows first order relationship and the specific rate constants were determined. The adsorption parameters were determined from both Longmuir and Freundlich equations at constant temperature and solution PH. The concentration of each pesticide before and after adsorption is calculated spectrophotometrically at fixed and maximum wavelength corresponds to each particle.
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Samar A. Ahmad, Sale, " Characterization of Jordanian Raw Bentonite and Surfactant-Modified Bentonite and their Use in the Removal of Selected Organic Pollutants from Aqueous Solutions " , "Journal of Applicable Chemistry",Vol.3,No.2, Nagaland University, Nagaland, INDIA., 03/12/2014
Abstract:
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ABSTRACT
Adsorption of aniline, N-methyl aniline and N, N – dimethyl aniline from aqueous solution was
investigated using raw and modified Jordanian bentonite. The modification was done using
hexadecyltrimethylammomium chloride (HDTMA-Cl), C 19H42N Cl. The raw and the modified bentonite
(organobentonite) were characterized using X-Ray fluorescence spectroscopy (XRF), X-Ray diffraction
(XRD), Fourier Transform Infrared Spectroscopy (FTIR), UV/VIS spectroscopy and cation exchange
capacity (CEC) methods. The adsorption studies were performed in batch system, and the effect of various
experimental parameters such as solution PH, initial concentration of pollutants were evaluated upon the
aniline and its derivatives adsorption onto raw and organobentonite. It is found that removal of aniline
from aqueous solution using raw bentonite ranges from 29.5% to 40.6% while for organobentonite ranges
from 60.2% to 88.0%, for N-methylaniline from 19.0% increased to 69.5% and for N,N-dimethyaniline the
adsorption increase from 19.4% to 96.4%. Maximum achievement was found to be in the range PH 3.1 to
4.2 for the organobentonite samples. The parameters indicated that organobentonite was feasible and has
a significant potential as an adsorbent for removal of aniline and its derivatives from aqueous solutions.
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Salem M. Musleh, Sam, " Removal of Organic pollutants from Aqueous Solutions Using Natural and Modified Jordanian Bentonite " , "International Journal of Recent Scientific Research",Vol.5,No.5, , India, 05/28/2014
Abstract:
In this study the adsorption of toluene, pyridine and benzene by raw and surfactant modified Jordanian bentonite was investigated.
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