Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Raafat M. Issa"'
Autor:
Raafat M. Issa, Morsi M. Abou-Sekkina, Abdalla M. Khedr, Alam El-Deen M. Bastawisy, Wael A. El-Helece
Publikováno v:
Arabian Journal of Chemistry, Vol 9, Iss S1, Pp S130-S137 (2016)
Cellulose from rice straw obtained at low sodium hydroxide solution concentration with high quality was used to obtain different cellulose derivatives through xanthation. Cellulose was then treated with carbon disulfide in the presence of sodium hydr
Externí odkaz:
https://doaj.org/article/f19f0071aed044b4a8852e74b7c5fa35
Autor:
Wael A. El-Helece, Alam El-Deen M. Bastawisy, Raafat M. Issa, Abdalla M. Khedr, Morsi M. Abou-Sekkina
Publikováno v:
Arabian Journal of Chemistry, Vol 9, Iss S1, Pp S130-S137 (2016)
Cellulose from rice straw obtained at low sodium hydroxide solution concentration with high quality was used to obtain different cellulose derivatives through xanthation. Cellulose was then treated with carbon disulfide in the presence of sodium hydr
Publikováno v:
Chinese Journal of Chemistry. 30:881-890
Mn(II), Co(II), Ni(II), Cu(II), Pd(II) and Ru(III) complexes of Schiff bases derived from the condensation of sulfaguanidine with 2,4-dihydroxy benzaldehyde (HL1), 2-hydroxy-1-naphthaldehyde (HL2) and salicylaldehyde (HL3) have been synthesized. The
Publikováno v:
Chinese Journal of Chemistry. 30:547-556
Mn(II), Co(II), Ni(II) and Cu(II) complexes of 5-mercapto-1,2,4-triazol-3-imine-2′-hydroxynaphthaline have been synthesized and characterized by elemental analysis, IR, 1H NMR, EI-mass, UV-Vis, and ESR (electron spin resonance) spectra, molar condu
Publikováno v:
Journal of Coordination Chemistry. 65:780-794
The azo dye ligand N-diaminomethylene-4-(3-formyl-4-hydroxy-phenylazo)-benzenesulfonamide (HL) and Cu(II), Co(II), and Mn(II) coordination polymers were synthesized in addition to a non-polymeric Pd(II) complex. In all complexes, the ligand bonds to
Publikováno v:
Current Applied Physics. 10:235-240
Polyaniline (PANI)-chemically coated the electrode of quartz-crystal microbalance (QCM) has been developed for the determination of phosphoric acid (H3PO4) in the liquid phase. The sensing mechanism is based on the fact that the QCM devices produce a
Publikováno v:
Materials and Corrosion. 61:709-714
The anti-corrosive properties of some antipyrine Schiff bases (benzylidine amino)antipyrine (a), 4-hydroxy 3-(benzylidine amino)antipyrine (b), 2-hydroxy 3-(benzylidine amino)antipyrine (c), and 2-hydroxy 3-(naphthylidine amino)antipyrine (d) are stu
Publikováno v:
Journal of Coordination Chemistry. 62:1859-1870
A series of metal complexes of Schiff bases derived from condensation of sulfa-guanidine with 1-benzoylacetone (H2L1), 2-hydroxybenzophenol (H2L2), dibenzoylmethane (H2L3), 5-methylisatine (H2L4), and 1-methylisatine (H2L5) have been synthesized. The
Publikováno v:
Eurasian Chemico-Technological Journal , Vol 11, Iss 2, Pp 149-158 (2009)
The polymineralized ore material of south Gabal El-A’urf area hosts several economic minerals. These include tanteuxenite, monazite, bastanasite, anatase, as well as zircon. The corresponding interesting rare metals of these minerals include Nb, Ta
Publikováno v:
Applied Surface Science. 255:2433-2441
The inhibitive effect of some substituted uracils, dithiouracil (DTUr), thiouracil (TUr), uracil (Ur) and dihydrouracil (DHUr) against the corrosion of neutral copper surface is studied by means of density functional approach B3LYP/6-31G calculations