Zobrazeno 1 - 10 of 43 pro vyhledávání: '"Alfy Badie Sakla"'
1
1,4-Cycloaddition of p-Benzoquinone; 1,4-Naphthoquinone and N-Phenylmaleimide to 9-Vinylidenexanthene (or Thioxanthene) Derivatives
Autor: Nashed Ishak Samaan, Nadia Fouad Abdul-Malik, Alfy Badie Sakla, Sami Bassili Awad
Publikováno v: Zeitschrift für Naturforschung B. 36:362-365
13-Substituted naphthene(K 1)xanthene(or thioxanthene)-1,4-dione (4a, b) have been obtained by thermal cycloaddition of p-benzoquinone (2) to 9-vinylidenexanthene(or thioxanthene) derivatives (1 a, b). Reductive acetylation of 4 gives the diacetoxy d
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e76c8a15738a7b5f3fdccee182fb0665
https://doi.org/10.1515/znb-1981-0316
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2
Simultaneous microdetermination of carbon, hydrogen, chlorine, bromine, sulfur, and metals in organometallic compounds
Autor: Alfy Badie Sakla, S.A. Abou-Taleb
Publikováno v: Microchemical Journal. 28:331-340
A method for the simultaneous microdetermination of carbon, hydrogen, chlorine, bromine, sulfur, and metals which combines features of the known intermediate storage technique in organic microanalysis and formation of the metal-oxine complex, is desc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b4c0f60cb2d1420644a30b6fbf1544d8
https://doi.org/10.1016/0026-265x(83)90068-1
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3
Characterization of interfering effects in the determination of molybdenum by atomic absorption spectrometry
Autor: M.M. El-Defrawy, A.M. Abdallah, M.A. Mostafa, Alfy Badie Sakla
Publikováno v: Analytica Chimica Acta. 174:347-352
The effect of anions on molybdenum absorbance depends on the pH; low pH causes the formation of iso- or heteropoly anions which change the atomization process in the flame. Organic ligands also depress the release of molybdenum atoms but cyanide radi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::01aabfb88e05680e900745cb1e7f2751
https://doi.org/10.1016/s0003-2670(00)84398-6
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5
Simultaneous microdetermination of carbon, hydrogen, mercury, chlorine, bromine and sulphur in organic compounds
Autor: O. Karim, Mohamed Rashid, Barsoum N. Barsoum, Alfy Badie Sakla
Publikováno v: Analytica Chimica Acta. 98:121-126
A simple, reliable method for the simultaneous microdetermination of carbon, hydrogen, mercury, chlorine (or bromine) and sulphur in organic compounds is described. The intermediate storage technique is used. Sulphur and the halogens are absorbed on
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7b8a5c03b21f2361999f96ff09f7946
https://doi.org/10.1016/s0003-2670(01)83246-3
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6
Preparation of Diazo Phenyl Sulfides. Kinetics and Mechanism of the Diazo Coupling Reaction ofp-Nitrobenzenediazo Phenyl Sulfide with ?-Naphthol under Various Conditions
Autor: Wagih Sadik Ebaid, Zaki Sawiris, Alfy Badie Sakla, Nabil Khalil Masoud
Publikováno v: Helvetica Chimica Acta. 57:481-487
Aryldiazophenyl sulfides prepared from diazotised arylamines and thiophenol at controlled pH, are coupled with β-naphthol yielding the corresponding azo dye. A kinetic study of the diazo coupling reaction of p-nitrobenzenediazo phenyl sulfide with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6c2d940d8468ae56eb8a4c466e68f9d6
https://doi.org/10.1002/hlca.19740570222
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7
Microdetermination of carbon in organic compounds by oxygen flask combustion with atomic absorption spectrophotometric, gravimetric, and titrimetric finishes
Autor: A.M. Shalaby, Alfy Badie Sakla
Publikováno v: Microchemical Journal. 24:168-172
A simple and accurate method is presented for the determination of the carbon content of organic compounds by electric oxygen flask combustion. Five results are obtained for one experiment by atomic absorption spectrophotometric, gravimetric, and tit
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0652d7f1a76945671c81eb60bb23e694
https://doi.org/10.1016/0026-265x(79)90118-8
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8
Microdetermination of Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Hg, Pb, Bi and U in inorganic and organometallic compounds with morpholinium morpholine-N-dithiocarboxylate
Autor: W. Beyer, A.A. Helmy, F.E. Harhhash, Alfy Badie Sakla
Publikováno v: Talanta. 26:519-522
The chelates of morpholinium morpholine-N-dithiocarboxylate with manganese(II), iron(II), iron(III), cobalt(II), nickel, copper(II), zinc, silver, cadmium, mercury(II), lead, bismuth and uranium(VI) have been prepared and their compositions elucidate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e864b72648138eca592825fc48931b1d
https://doi.org/10.1016/0039-9140(79)80082-x
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10
Addition of Xanthenyl and Thioxanthenyl Halides to Asymmetric Diarylethylenes and Their 2-Halogeno-Derivatives
Autor: Nadia Fouad Abdul-Malik, Alfy Badie Sakla, Wadie Tadros, Sami Bassili Awad
Publikováno v: Helvetica Chimica Acta. 56:1829-1837
Xanthenyl and thioxanthenyl halides added readily to asymmetric diarylethylenes and their 2-halogeno-derivatives to give after dehydrohalogenation 1,1-diaryl-2-[xanthen(orthioxanthen)-9-yl]-ethylenes and 1,1-diaryl-2-halogeno-2-[xanthen(or thioxanthe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9fae34d6169539cd7ddc604612361307
https://doi.org/10.1002/hlca.19730560602
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