Browsing Chemistry & Earth Sciences by Publisher "Qatar University"
Now showing items 1-8 of 8
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The amino acid composition of some Common marine algae from Qatar (Arabian Gulf)
( Qatar University , 1993 , Article)The most dominant twenty algal species representing the main three groups of benthic macroalgae, Chlorophyceae, Phaeophyceae and Rhodophyceae were collected from the coastal zones of the Qatar peninsula. The algae were ... -
Biochemical And Environmental Studies On Hepatoma Patients In Egypt
( Qatar University , 1994 , Article)The present study was carried out on 102 hepatoma patients collected mainly from the National Cancer Institute, Cairo University, during the period 1988-1991 . Environmental and personal data were collected for each patient. ... -
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). ... -
Constituents of plants growing in qatar xxv flavonoids of Picris Radicata (forssk.) Less.
( Qatar University , 1994 , Article)Four flavonoids were isolated from the plant and were identified as apigenin, chrysin 7-glucoside, leuteoline and luteolin 7-glucoside. -
Constituents of plants growing in Qatar: part xxviii. Constituents Of cistanche phelypaea
( Qatar University , 1995 , Article)Ten compounds were isolated from the methanolic extract of the aerial parts of Cistanche phelypaea (Orobanchaceae) and identified as echinacoside (1), tubuloside A (2), tubuloside E (3), acteoside (4), 2'-acetylacteoside ... -
Phospholipid Fatty Acids Compositions of Sponges from Qatar I- Haplosclerida
( Qatar University , 2006 , Article)The phospholipid fatty acid contents of six Haplosclerida sponges collected along Qatari ;ts, Arabian Gulf, were identified by coupling GC-MS experiments. More than hundred of rated and unsaturated fatty acids have been ... -
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 ... -
Volatile Components of the Phaeophyceae Hormophysa cuneiformis Growing Along Qatar Coasts
( Qatar University , 2007 , Article)The present work deals with the study on volatile compounds from the brown alga Hormophysa cuneiformis collected from the Northwest coast of Qatar on May 2002. Two extraction methods have been used: conventional hydrodistillation ...