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Constituents of plants growing in Qatar - Part XIX. Flavonoids of Glossonema edule N. E. Br.
(
Springer Nature
, 1990 , Article)
The study of the flavonoids of the unripe fruits of Glossonema edule, resulted in the isolation and identification of apigenin 6,8-di-C-glucoside (violanthin) and luteolin 7-O-glucoside. © 1990 Kluwer Academic Publishers.
Spectroscopic studies on the uranyl-schiff base solid complex (N,N'-p-phenylenebis(salicylideneiminato)UO2)
(
Elsevier
, 1992 , Article)
The dioxouranium(VI)-Schiff base complex (N,N'-p-phenylenebis(salicylideneiminato)UO2); (UO2(sal-p-phdn)) was prepared. Its resonance Raman, infrared and electronic spectra were obtained and assigned on the basis of C2v ...
Vibrational analysis of the (VO(O2)2NH3)- ion
(
Elsevier
, 1990 , Article)
The infrared spectra of the solid complex NH4 (VO(O2)2NH3) were obtained. Due to the complicated structure of the diperoxo (VO(O2)2NH3)− ion, normal coordinate analysis was introduced in order to make quantitative assignments ...
Helminth parasites of fishes from two inland lakes in Egypt
(
Nihon Kiseichu Gakkai
, 1990 , Article)
Results of helminthological examination of 1243 fishes, caught from two inland lakes, with unique and contrasting hydrobiological features at Fayoum Governate in Egypt, are presented.
General incidence of trematodes, ...
A review of process and production in SL studies
(
Qatar University
, 1990 , Article)
Open-ended cloze procedure and multiple - choice cloze procedure: similarties and differences
(
Qatar University
, 1991 , Article)
This paper is a validation of two cloze procedures: Open-Ended and Multiple-Choice (henceforth OE and MC respectively). Open-Ended and Multiple-Choice tests on the same text were administered to 60 English majors in their ...
Economic And Thermal Performance Of Thermostone In Qatar
(
Qatar University
, 1996 , Article)
This paper is concerned with the performance characteristics of thermostone as a building material, and their comparison with those of hollow concrete blocks. Carrier Advanced Load Program (E20-II) was used to estimate the ...
Solid-State Ac-Conductivity Analysis For The Long Debated Catalytic Activity Of The Boralite Sieve
(
Qatar University
, 1996 , Article)
The ac-phase dependent impedance, capacitance and dielectric loss of boralite are measured and correlated with those of a similar history HZSM-5 as a function of frequency (0.1-100 kHz) and temperature (373-638 K) at 0.8 ...
Constituents Of Green Beans Phaseolus Vulgaris (Lipids And Flavonoids)
(
Qatar University
, 1992 , Article)
Chemical study of the lipid fraction resulted in the isolation and identification of a hydrocarbon fraction (n-Czg -0-033); an aliphatic alcohol fraction (C^, Czp, €30) and a sterol fraction (stigmasterol and sitosterol). ...
A Spreadsheet Teaching Tool For Analysis Of Pipe Networks
(
Qatar University
, 1997 , Article)
Spreadsheets are used widely in engineering to perform several analysis and design calculations. They are also very attractive as educational tools due to their flexibility and efficiency. This paper demonstrates the use ...