Preparation of New HPLC Stationary Phase and Study of Its Chromatographic Performance Toward The Separation of Some Water-Soluble Vitamins
Abstract:
إنجليزية
Thesis
Thermodynamic and Volumetric Properties of Some Water-Soluble Vitamins in Dilute HCl and in Aqueous NaCl Solutions at (293.15, 298.15, 303.15, and 308.15) K
Abstract:
إنجليزية
SPECTROSCOPIC AND PHOTOCHEMICAL STUDY OF RIBOFLAVIN
Abstract:
إنجليزية
New photostabilizers for poly (vinyl chloride) based on some metal complexs of 2-(6- methoxynaphthalen-2-YL) propanoate
Abstract:
إنجليزية
Electronic spectroscopy of some transition metal ion compounds in a new ionic liquid
Abstract:
إنجليزية
EELLEECCTTRROONNIICC SSPPEECCTTRROOSSCCOOPPYY OOFF SSOOMMEE TTRRAANNSSIITTIIOONN MMEETTAALL IIOONN CCOOMMPPOOUUNNDDSS IINN AA NNEEWW IIOONNIICC LLIIQQUUIID
The behavior of some transition metal cations [Cr (III), Fe (III), Fe (II), Co (II), Ni (II) and Cu (II)] were investigated in ammonium alum-urea ionic liquid. The study was followed by UV-Visible electronic spectroscopy to establish their coordination geometry in the liquid and estimate the ionic species attached to the transition metal cations. The reactivity of the metal cations were found to vary from one to another. Chromium (III) cation was found, (as expected) to be in octahedral geometry with ionic liquid species and was inert toward the addition of ligands.
إنجليزية
EELLEECCTTRROONNIICC SSPPEECCTTRROOSSCCOOPPYY OOFF SSOOMMEE TTRRAANNSSIITTIIOONN MMEETTAALL IIOONN CCOOMMPPOOUUNNDDSS IINN AA NNEEWW IIOONNIICC LLIIQQUUIID
The behavior of some transition metal cations [Cr (III), Fe (III), Fe (II), Co (II), Ni (II) and Cu (II)] were investigated in ammonium alum-urea ionic liquid. The study was followed by UV-Visible electronic spectroscopy to establish their coordination geometry in the liquid and estimate the ionic species attached to the transition metal cations. The reactivity of the metal cations were found to vary from one to another. Chromium (III) cation was found, (as expected) to be in octahedral geometry with ionic liquid species and was inert toward the addition of ligands.
إنجليزية
Superoxide Dismutase Activity and Lipid Profile in sera of some Cardiovascular Diseases
Abstract:
Many cardiovascular diseases deaths occur among elderly people, between the 45–64 age group. Cardiovascular diseases leads to obstruction of blood flow through the coronary arteries to the heart
إنجليزية
Effect of carbon nanotube on physical properties of the nematic liquid crystal N-(4`-methoxybenzylidene) - 4-nbutylaniline (MBBA
Abstract:
In this work the nematic liquid crystal (NLC) N-(4`-methoxybenzylidene)-4-n-butylaniline (MBBA) with transition temperature range between (22oC - 42℃) was prepared and identified using FTIR and 1H NMR spectroscopy. The liquid crystalline behavior was examined by means of hot-stage polarizing microscopy to determine the phase transition temperatures and the type of mesophases. The prepared compound MBBA was doped with different concentrations of multi wall carbon nanotube in order to study the electric
إنجليزية