Showing papers by "Minia University published in 1984"
TL;DR: In this paper, a nucleophilic addition followed by ring opening and recycling steps is suggested to proceed through a nucleophile-based addition followed with ring re-opening and recycling.
11 citations
TL;DR: In this article, the thermal decomposition products of MgC2O4· 2 H2O, CaC 2O 4·H2O or BaC2 O4·0.5 H 2O have been characterized with the help of DTA.
10 citations
TL;DR: Several 3-(2,3-dimethyl-5-oxo-1-phenyl-3-pyrazolin-4-yl)-azopyrazolo[1,5-a]pyrimidines were obtained by reacting the 5-substituted 3-amino-4-(3,3dimethyl,5,oxo,1,phenyl,3,pyrazin-4yl)hydrazonopyrazoles 1a, b with β-bifunctional reagents and α,β-unsaturated nit
Abstract: Several 3-(2,3-dimethyl-5-oxo-1-phenyl-3-pyrazolin-4-yl)-azopyrazolo[1,5-a]pyrimidines were obtained by reacting the 5-substituted 3-amino-4-(2,3-dimethyl-5-oxo-1-phenyl-3-pyrazolin-4-yl)hydrazonopyrazoles 1a, b with β-bifunctional reagents and α,β-unsaturated nitriles.
7 citations
TL;DR: In this article, the color reagent was used to monitor cellobiose hydrolysis with β-glucosidase, contained in four cellulase enzyme preparations from various fungal sources.
Abstract: TheSomogyi—Nelson colorimetric method is applied in a new manner which is more suitable for following the kinetics of cellobiose hydrolysis catalyzed by β-glucosidase (EC 3.2.1.21). TheSomogyi—Nelson colour reagent, which is a mixture of the solutions of the reagent ofSomogyi and that ofNelson in a volume ratio of 1:1, is added to the enzyme-substrate solution at the very start of the reaction. The colour reagent reacts with the product (D-glucose). Under the reaction conditions (0.1M acetate buffer,pH = 5.0 and temperature 37°C) the colour reagent does not affect the enzyme activity. The method excludes any inhibition of the product, owing to the continuous removal of the latter by the colour reagent. The method suggested has been applied to monitor cellobiose hydrolysis with β-glucosidase, contained in four cellulase enzyme preparations from various fungal sources. The values of theMichaelis parameters (Km, V) were determined.
7 citations
TL;DR: Several new fused isoxazole derivatives could be obtained by using 5-amino-4-ethoxycarbonyl-3-ETHO-CARBONYL-3 -ethoxy carbonyl methyl and 5-amide-4cyano-3trichloromethyl-isoxazoles as starting components as mentioned in this paper.
Abstract: Several new fused isoxazole derivatives could be obtained utilising 5-amino-4-ethoxycarbonyl-3-ethoxycarbonylmethyl and 5-amino-4-cyano-3-trichloromethyl-isoxazoles as starting components.
5 citations
TL;DR: The overall amino acid composition of the three varieties ofPhaseolus vulgaris seeds were similar, but all had a relative deficiency in the sulphur-containing amino acids, moreover, there was a negative correlation between sulphur amino acid content and the percentage of seed proteins.
Abstract: The overall amino acid composition of the three varieties ofPhaseolus vulgaris seeds were similar. All had a relative deficiency in the sulphur-containing amino acids, moreover, there was a negative correlation between sulphur amino acid content and the percentage of seed proteins. The lysine content of thePhaseolus seeds was relatively high, the amount ranged from 8.05 to 8.63 g/16 g N. Tryptophan was slightly higher for Giza variety than the others. The highest levels of free amino acids were recorded for Contender variety and Swissblan one. Cystine, phenylalanine and tyrosine were absent from the extracts of the three varieties.
5 citations
TL;DR: In this paper, the kinetics of the reaction between alumina and barium carbonate were studied using thermogravimetric analysis to monitor the fraction of reaction completed vs. time.
4 citations
01 Jan 1984
TL;DR: In this article, the authors considered the industrial applications of the film cooling technique and obtained the optimal velocity and temperature distributions in the boundary layer region and optimized the conditions of experimental fluid injection through holes.
Abstract: In Part I of this study, the authors considered the industrial applications of the film cooling technique and obtained the optimal velocity and temperature distributions in the boundary layer region. In Part II, the authors could optimize the conditions of experimental fluid injection through holes.
1 citations
TL;DR: Several new fused isoxazole derivatives could be obtained by using 5-amino-4-ethoxycarbonyl-3-ETHO-CARBONYL-3 -ethoxy carbonyl methyl and 5-amide-4cyano-3trichloromethyl-isoxazoles as starting components.
Abstract: Several new fused isoxazole derivatives could be obtained utilising 5-amino-4-ethoxycarbonyl-3-ethoxycarbonylmethyl and 5-amino-4-cyano-3-trichloromethyl-isoxazoles as starting components.