Akila A Saleh

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The bifunctional carbonyl compound; 4,6-diacetylresorcinol (DAR) serves as precursor for the formation of different Schiff base ligands, which are either di- or tetra-basic with two symmetrical sets of either O2N or N2O tridentate chelating sites. The condensation of 4,6-diacetylresorcinol with 3-amino-1-propanol (3-AP) or 1,3-diaminopropane (DAP), yields(More)
New bis (pyridylurea) ligand, H2L, was synthesized by the reaction of ethylpyridine-2-carbamate (EPC) and p-phenylenediamine. The ligand was characterized by elemental analysis, IR, (1)H NMR, electronic and mass spectra. Reaction of the prepared ligand with Co(2+), Ni(2+), Cu(2+), Fe(3+), VO(2+) and UO2(2+) ions afforded mono, bi- and trinuclear metal(More)
N-Bromosuccinimide, Zl5-Steroids, Diosgenin, Cholesterol, Stigmastane, Dehydroisoandrosterone The reaction of N-bromosuccinimide with Zl5-steroids such as, diosgenin, cholesterol, stigmasterol and dehydroisoandrosterone were studied. It was found that NBS in a solvent mixture of acetone, water and acetic acid (8:1:0.1) oxidises the olefinic bond of all the(More)
Tetradentate N(2)O(2), N(4) Schiff bases, 1,2-bis(4-oxopent-2-ylideneamino) benzene (BOAB), 1-(4-oxopent-2-ylideneamino-2-[(2-hydroxyphenyl)ethylideneamino] benzene (OAHAB), 7,16-bis(4-chlorobenzylidene)-6,8,15,17-tetra-methyl-7,16-dihydro -5,9,14,18-tetraza-dibenzo[a,h] cyclo tetradecene (BCBDCT),(More)
Our research objectives include developing fundamental performance limits and designing optimum imbedding networks for diodes in high microwave applications such as mixers, frequency multipliers, parametric amplifiers, and avalanche transit-time devices. These aims form the background for extending communications research to higher and higher frequencies(More)
BACKGROUND There are insufficient guidelines for the use of adjunctive systemic antibiotics for patients with periodontal disease. The aim of this study was to compare clinical outcomes for patients with moderate-advanced chronic periodontitis treated with: scaling and root planing (SRP), SRP with amoxicillin and metronidazole (A+M), SRP with Azithromycin(More)
The results show that this group of women has dietary habits similar to a “western” diet of high fat, high simple carbohydrates and low fiber. The Body Mass Index (BMI) of 50% of the group falls in the overweight (above 25) and obese (above 30) regions. Twelve members of the group, or 67%, have waist/hip circumference ratios of 0.73 or above, a factor(More)
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