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Your search keyword '"Mohamed Kamel"' showing total 34 results
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34 results on '"Mohamed Kamel"'

1. Relation Between the Rotproofing Properties and Chemical Structure of Some Reactive Compounds and Their Chromophoric Derivatives

Author

Mohamed Kamel, Sanaa A. Amin, and Laila A.W. Abdou

Subjects
Polymers and Plastics, Chemistry, Chemical structure, Chemical Engineering (miscellaneous), Molecule, Organic chemistry, Antimicrobial
Abstract

The synthesis of reactive rotproofing agents based on dichloro- and monochloro-s-triazines and their application on cotton fabric has been attempted. The combination of both chromophoric and antimicrobial properties in the same molecule was achieved by development of reactive cotton with the appropriate amines.

Published
1974

2. Zur Kenntnis der Dibenzoxanthyliumsalze II

Author

R. Wizinger and Mohamed Kamel

Subjects
Inorganic Chemistry, Chemistry, Organic Chemistry, Drug Discovery, Physical and Theoretical Chemistry, Biochemistry, Medicinal chemistry, Catalysis
Abstract

Das bei der Einwirkung von Formaldehyd und konz. Schwefelsaure auf J-Saure (2-Amino-5-naphtol-7-sulfosaure) entstehende indigoblaue Produkt ist ein 3,4,5,6-dibenzoxanthyliumfarbstoff, in welchem sich die Aminogruppen in amphi-Stellung zum Chromophor befinden. Analoge Farbstoffe werden mit Derivaten der J-Saure erhalten. Die Reaktion ist spezifisch fur Formaldehyd. 2-Amino-5-naphtol und seine Derivate mit unbesetzter 7-Stellung geben auch mit aromatischen Aldehyden Dibenzoxanthyliumfarbstoffe mit amphi-standigen Auxochromen.

Published
1960

3. Synthesis of 1-methyl-7-nitrobenzotriazole and some derivatives

Author

Mohamed Kamel, Mohamed I. Ali, and M.M. Kamel

Subjects
Nitrous acid, chemistry.chemical_compound, chemistry, Organic Chemistry, Drug Discovery, Organic chemistry, Biochemistry
Abstract

The action of nitrous acid on 2-amino-6-nitro-N-methylaniline affords 1-methyl-7-nitro-benzotriazole. The corresponding 7-amino-, acetylamino-, and benzoylamino-derivatives have been prepared. Thus the compounds and their derivatives previously assigned the 1-methyl-7-nitro structure are the 4-substituted compounds.

Published
1966

5. Dibenzoxanthylium salts—IV

Author

Mohamed Kamel and H. Shoeb

Subjects
Chemistry, Organic Chemistry, Drug Discovery, Biochemistry, Medicinal chemistry
Abstract

A novel synthesis of the hitherto unkown 1,2,5,6-dibenzoxanthone (II) and 2,3,5,6-dibenzoxanthone (IV) has been successfully achieved. Reactions of these two compounds are described. Study on the relation between the constitution and colour in 1,2,5,6-dibenzo- and 2,3,5,6-dibenzoxanthylium compounds is included.

Published
1964

6. Untersuchungen in der Benzotriazol-Reihe, V1). Synthese von Benzo-bis-triazolen und Imidazo-benzotriazol-Derivaten

Author

M.M. Kamel, Mahmoud Mohamed Abdel Hamid, and Mohamed Kamel

Subjects
chemistry.chemical_compound, Benzotriazole, chemistry, Diamine, Organic Chemistry, Physical and Theoretical Chemistry, Medicinal chemistry, Amination
Abstract

Die Aminierung von 5-Nitro-, 1-Methyl-5-nitro, 2-Methyl-5-nitro- und 2-Phenyl-5-nitro-benzotriazolen fuhrt zu den entsprechenden 4-Amino-5-nitro-benzotriazolen 3a, 3b, 4a und 4b, welche katalytisch zu den zugehorigen 4.5-Diamino-Derivaten reduziert werden. Die Diamine werden zu Benzo-bistriazol und Imidazo-benzotriazol-Derivaten cyclisiert. Studies in the Benzotriazole Series, V1). Synthesis of Benzo-bistriazoles and Imidazo-benzotriazole Derivatives Amination of 5-nitro-, 1-methyl-5-nitro-, 2-methyl-5-nitro-, and 2-phenyl-5-nitro-benzotriazoles yields the corresponding 4-amino-5-nitro-benzotriazoles 3a, 3b, 4a and 4b. The latter compounds are catalytically reduced to give the corresponding 4,5-diamino derivatives. The diamines are cyclised to give the benzo-bistriazole and imidazo-benzotriazole derivatives.

Published
1971

8. Studies on Dye Fixation Using Hexahydro-1,3,5-Triacryloyl-s-Triazine

Author

M.S. Hashem, Mohamed Kamel, and Sanaa A. Amin

Subjects
010302 applied physics, Polymers and Plastics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Part iii, Fixation (surgical), chemistry.chemical_compound, chemistry, Nucleophile, Group (periodic table), 0103 physical sciences, Polymer chemistry, Chemical Engineering (miscellaneous), Order (group theory), Molecule, 0210 nano-technology, Triazine
Abstract

The effect of the basic skeleton of the molecule as well as the type and number of nucleophilic groups on fixation of dyestuffs on cellulosic fibers using hexahydro-1,3,5-tri-acryloyl- s-triazine is studied. It is shown that the different groups react in the order amino group > imino group > hydroxyl group. Presence of three or at least two nucleophilic groups is generally essential for higher degree of fixation.

Published
1973

9. Studies on metal complex forming azo dyes. VIII. Dyes with an o-Imino Azo Group

Author

Y. Z. El-Emeri, Sanaa A. Amin, and Mohamed Kamel

Subjects
Metal, Group (periodic table), Chemistry, visual_art, visual_art.visual_art_medium, Organic chemistry, Chelation, macromolecular substances, General Medicine
Abstract

Several new metallisable azo dyestuffs containing heterocyclic imino groups as part of the chelating system are described. These dyes are of the dispersed type, and were applied on nylon fibres followed by metallisation. The light and washing fastness properties of the dyes as well as their metal complexes were determined.

Published
1972

10. Dibenzoxanthylium-Salze, VI. Untersuchungen über Dibenzoxanthylocyanine

Author

Mohamed Kamel and Hussein Shoeb

Subjects
Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Medicinal chemistry
Abstract

Styryl-dibenzoxanthylium-Verbindungen (6–8a–e), Dibenzoxanthylomethine (9–11a–c, 15–17 und 21–26), Anilinovinyl-dibenzoxanthylium-Verbindungen vom Typ 27 und Dibenzoxanthylo-merocyanine vom Typ 28 besitzen interessante Beziehungen zwischen Konstitution und Farbe.

Published
1966

12. Untersuchungen in der Benzotriazol-Reihe, IV1) Synthese von 6-Nitro-1-methyl-benzotriazol und einigen Derivaten

Author

Mohamed I. Ali, M.M. Kamel, and Mohamed Kamel

Subjects
chemistry.chemical_compound, Benzotriazole, Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Medicinal chemistry
Abstract

Die Darstellung von 6-Nitro-1-methyl-benzotriazol (4) aus 4-Nitro-o-phenylendiamin wird beschrieben. Mehrere Umsetzungen dieser Verbindung sowie des durch Reduktion erhaltenen 6-Amino-Derivats 5 werden aufgefuhrt. Studies in the Benzotriazole Series, IV1). Synthesis of 6-Nitro-1-methylbenzotriazole and Some Derivatives 6-Nitro-1-methylbenzotriazole (4) is prepared from 4-Nitro-o-phenylenediamine. Several reactions of this compound and of the corresponding 6-amino compound 5 are described.

Published
1970

14. Metallkomplexbildende Azofarbstoffe, VI. Farbstoffe mit Chrysen-Rest

Author

Sanaa A. Amin and Mohamed Kamel

Subjects
Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Medicinal chemistry
Abstract

Die Metallkomplex-bildenden Farbstoffe 5a–h entstehen durch Kupplung von 2-Methoxy-, 2-Hydroxy- und 2-Carboxy-aryldiazoniumsalzen mit 6-Hydroxy-chrysen (1) in Pyridin. Chrysenchinon (2) wird mit o-substituierten Arylhydrazinen zu den Metallchelat-bildenden Azofarbstoffen 6a–f kondensiert. – Entmethylierung der 5-Hydroxy-2-methoxy-arylazo-Farbstoffe 5b und 6b mit Kobaltnitrat in Pyridin fuhrt zu den Dihydroxy-azo-Verbindungen 5h und 6h. o′-Hydroxylierung der Monohydroxy-azo-Farbstoffe 3, 7 und 8 ergibt Gemische von Ausgangsmaterial und den gewunschten Dihydroxy-azo-Farbstoffen 5g, 5h und 6h.

Published
1967

15. Dibenzo‐xanthyliumsalze, V. Synthese und Reaktionen von 9‐Methylen‐dibenzo‐xanthenen und verwandter Verbindungen

Author

Hussein Shoeb and Mohamed Kamel

Subjects
Inorganic Chemistry, Chemistry, Medicinal chemistry
Abstract

Die Umsetzung von Methylmagnesiumjodid mit den Dibenzo-xanthonen 2–5 und von Benzylmagnesiumchlorid mit den Dibenzo-xanthonen 1, 4 und 5 liefert die entsprechenden 9-substituierten Methylene 7, 8a–10a bzw. 6b, 9b und 10b. Die Dibenzo-xanthone 1–5 reagieren mit p-Methoxy-phenylmagnesiumbromid und α-Naphthylmagnesiumbromid zu den entsprechenden 9-substituierten Carbinolen 11a,b–15a,b. Die Reaktionen der Produkte werden beschrieben und Beziehungen zwischen Konstitution und Farbe einiger Dibenzoxanthyliumverbindungen untersucht.

Published
1966

16. Zur kenntnis der dibenzoxanthyliumsalze

Author

Mohamed Kamel

Subjects
Inorganic Chemistry, Organic Chemistry, Drug Discovery, Physical and Theoretical Chemistry, Biochemistry, Catalysis
Published
1959

18. Thermochromism of Diaryldisulfides

Author

Mohamed Kamel and Ahmed Mustafa

Subjects
Thermochromism, Multidisciplinary, Chemistry, Combinatorial chemistry
Published
1953

20. 4-Styrylcoumarins in Diene Syntheses. II1

Author

Mohamed Aly Allam, Mohamed Kamel, and Ahmed Mustafa

Subjects
chemistry.chemical_compound, Colloid and Surface Chemistry, Diene, chemistry, Organic chemistry, General Chemistry, Biochemistry, Catalysis
Published
1956

21. Über die Konstitution des Phenanthrenrots

Author

R. Wizinger and Mohamed Kamel

Subjects
Inorganic Chemistry, Stereochemistry, Chemistry, Organic Chemistry, Drug Discovery, Physical and Theoretical Chemistry, Biochemistry, Catalysis
Abstract

Das aus 1-Naphtylhydrazin-4-sulfosaure und Phenanthrenchinon dargestellte Phenanthrenrot ist nicht, wie bisher angenommen, ein Dihydrazon, sondern ein Monohydrazon (9-Hydroxy-l0-[4′-sulfonaphtalin-l′-azo]-phenanthren).

Published
1959

32. Express Rates or Animals?

Author

Mohamed Kamel and Ahmed Mustafa

Subjects
Multidisciplinary, Chemistry, Medicinal chemistry, Quinone
Published
1953

33. Notes

Author

E. H. Baker, F. C. Tompkins, Hussein A. Fahim, Abdallah M. Fleifel, Felix Bergmann, Abraham Kalmus, Ernst Fischer, Yehuda Hirshberg, H. R. V. Arnstein, E. R. Ward, L. A. Day, R. S. Bradley, Wadie Tadros, Mohamed Kamel, A. S. Bailey, D. H. Bates, H. R. Ing, M. A. Warne, E. Neale, L. T. D. Williams, H. B. Henbest, A. G. Sharpe, Alex. H. Lamberton, E. P. Hart, C. A. Bunton, E. A. Halevi, J. P. Thurston, James Walker, R. A. Robinson, Frederick G. Mann, Bryan B. Smith, D. Ll. Hammick, A. M. Roe, Stanley Peat, W. J. Whelan, and Gwen J. Thomas

Published
1952

34. A cultural approach to nursing education in the United Arab Republic

Author

El Bindari, Aleya Mohamed Kamel

Subjects
Egypt, United Arab Republic, Nursing education
Abstract

STATEMENT OF THE PROBLEM: This study is an attempt to determine the degree to which the Higher Institute of Nursing is meeting the contemporary needs of the United Arab Republic. The purposes of this investigation are: 1. To determine to what extent the existing program has accomplished the following: a) the philosophy and goals have been in accordance with the educational program; b) the functions and goals of graduates have been specified and were in accordance with these objectives and aims; c) graduates have been educationally prepared to assume the positions to which they were assigned. 2. To view nursing in the broad social context and investigate the socio-cultural, political, and economic factors which have influenced the development of the nursing profession in the United Arab Republic. 3. To propose a plan for developing a curriculum for nursing at the university level which will take into account the general characteristics of the society and will satisfy the medical and health needs that are evident in the country. PROCEDURAL METHOD: The case study method has been employed in the research and writing of this dissertation. This method was selected for reasons related to the nature of the study undertaken: 1. The writer was working in an unformulated area where there was relatively little available in terms of previous studies on nursing education in the United Arab Republic which would serve as a guide. 2. The intensive case method which involves the case study of a group has been found to be a particularly fruitful method for stimulating insights and suggesting hypotheses. 3. The attitude of the investigator is one of alert receptivity of seeking rather than testing. Instead of limiting himself to the testing of hypotheses, the investigator is guided by the features of the object being studied; his inquiries are constantly in the process of reformulation and redirection as new information is obtained. 4. The intensity of the study of the group selected for investigation and the intensity of the attempt to obtain sufficient information will characterize and explain the unique features of the case and those which it has in common with other cases. 5. It relies on the integrative powers of the investigator, on his ability to draw together many bits and pieces of information into a unified interpretation. FINDINGS: 1. The United Arab Republic is undergoing rapid social, economic and political changes which the education institutions both reflect and effect. 2. In founding the Higher Institute of Nursing with the aid of World Health Organization, the United Arab Republic adopted the program of studies from foreign curriculae patterns. International nursing leaders were among those who helped establish this institute because no Egyptian nurses were qualified at that time to participate in this program. The program did not have the necessary adjustments made to meet the needs of the culture concerned: a) the program does not deal with problems and issues which are peculiar to the culture and contribute to its health and nursing problems; b) the program does not equip students with the necessary tools and techniques which would enable them to attempt to reach a solution to some of the most urgent nursing problems. 3. The Higher Institute of Nursing prepared students who, upon termination, were not assigned to positions which were in accordance with the education they received. 4. The Institute has not made explicit what the role of the university educated nurse is to be. 5. Changes in medical and health practices have influenced the responsibilities of nurses. CONCLUSIONS: The adoption of a foreign curricula pattern without taking into consideration possible outcomes and consequences due to cultural forces may bring about not only unfavorable results but total failure. From the findings, suggestions were made to improve the situation.

Published
1965

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