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Now showing items 11-20 of 197
Comparative studies of the oil from silybum marianum cultivated in Egypt using glc
(
Qatar University
, 1994 , Article)
Quantitative comparative study of the oil fraction constituents in the fruits of Silybum marianum successfully cultivated in new reclaimed land with those of the two wild types viz., purple flower and white flower bearing ...
Synthesis of some newer indazolyl-oxadiazoles, thiadiazoles and 1,2,4-Triazoles
(
Qatar University
, 1994 , Article)
2-Aryl-3-chloro-2H-indazole (4), obtained in excellent yield (>90%) by the action of thionyl chloride on o-azidobenzanilide(3), was allowed to condense with ethyl p-aminobenzoate to afford the corresponding indazolo-ester ...
Abundance Of Insects And Mites Infesting Stored Grain And Animal Feed In Riyadh And Dammam Provinces, Saudi Arabia
(
Qatar University
, 1994 , Article)
Insects and mites infesting wheat, maize and wheat bran, stored in plants at Riyadh and Dammam, Saudi Arabia, were scanned in 2 seasons, 1987 and 1988. Grains from the local markets and dust from both provinces were also ...
Explicit Forms of Conservation Laws of a Class of Differential Equations
(
Qatar University
, 1994 , Article)
Explicit forms of conservation laws of a class of nonlinear partial differential equations are derived; firstly from BScklund transformation and secondly from the. fundamental equations of the corresponding inverse method.
ECG Abnormalities Induced By Scorpion Venom Administration: The Effect And The Mechanism
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Qatar University
, 1994 , Article)
Intramuscular administration of scorpion (Leiurus quinquestriatus) lyophilized venom (100, 200 and 400 mg/kg) into rats produced drastic changes in the electrical activity of the cardiac muscle. These abnormalities were ...
Thermoluminescence And Dielectric Properties Of An X-Ray Irradiated Double Sulphate Crystal
(
Qatar University
, 1994 , Article)
Thermoluminescence measurements and A. C. conductivity o(w) for nonirradiated and x-ray irradiated Potassium Cesium Sulphate, KCSSO4, crystals have been studied. TL reader type Harshaw model 2000 A+B and the impedance meter ...
chelating behaviour of 1,1,3,3-propanetetrasalisoyl tetracarbohydrazone
(
Qatar University
, 1994 , Article)
The reaction of 1,1,3,3-propanetetrasalisoyltetracarbohydrazone (HgPTSTCH) with some metal ions in ethanol-aqueous medium has been studied. The isolated complexes were formulated as [Cu4(PTSTCH)8H2O] 4H2O, [Co4(PTSTCH) ...
Total Mercury Distribution In Surface Sediments From The Arabian Gulf
(
Qatar University
, 1994 , Article)
Surface sediment samples collected during the first leg of Mt. Mitchell cruise and covering the entire Gulf, were analysed for their total Hg content. The total Hg concentrations ranged from 0.032 to 0.27 ug/g dry wt. The ...
Mullet culture in qatar: effects of replacing fish meal With soybean meal on growth rates and feed utilization efficiency of liza macrolepis (pisces: mugilidae)
(
Qatar University
, 1994 , Article)
The effects of replacing fish meal (FM) with soybean meal (SBM) in practical diets fed to fingerling mullet, Liza macrolepis, on the growth rates, feed utilization and body composition were investigated. Five isocaloric ...
Synthesis and Reactivity of Iron-Iridium Heterobimetallic Complexes Using Tridentate Phosphine Ligands
(
Qatar University
, 1994 , Article)
Treatment of {Fe (CO)3 {(PPh2) 2 C=CH2}] with PPh2H gives the addition product [Fe (CO)3 {(PPh2) 2 CHCH2 PPh2}] (1). The uncoordinated phosphine group of complex 1 reacts with Ir4 (CO)12 to give mono-, di- and tri-substituted ...