Search
Now showing items 11-20 of 22
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 ...
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 ...
جغرافية العالم الإسلامي ومستقبله
(
نظام الشافعي، علي الشيب، بسام النصر
, 1995 , Book)
اعتمد الكتاب في بياناته على احدث المراجع العالمية والاقليمية والوطنية ، والبحوث الحديثة التي درست جوانب من القضايا الجغرافية المتعلقة بدول العالم الاسلامي . وقد حاولنا في الكتاب ان يكون في نهاية كل فصل دراسة اقليمية ...
Effect of gamma radiation on the morphology and Thermophysical properties of the pollen wall of Phoenix dactylifera L.
(
Qatar University
, 1994 , Article)
Pollen grains of Phoenix dactylifera were exposed to different doses of gamma radiation (250,500,1000 rad and 1 M rad). To access the effect of radiation on the external morphology of the pollen grains, they were examined ...
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. ...
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 ...
موسوعة المعلومات القطرية
(
جامعة قطر
, 1998 , Book)
لقد أثبتت التجارب والدراسات أن نهضة المجتمعات وتنميتها تستجيب ، في غالب
الأحيان ، إلى مؤشراتها الاجتماعية والإنسانية والاقتصادية والعلمية والتقنية.
فالمجتمع، لكي يحافظ على هويته ويلعب دوره الحضاري ويشارك في صياغة ...
التنمية الصناعية في قطر و الخليج
(
نظام الشافعي
, 1999 , Book)
الحمد لله أن وفقني لاتمام تأليف هذا الكتاب الذي اتى بعد ست سنوات من
تدريس مقرر (( التنمية الصناعية في قطر والخليج )) في جامعة قطر كمقرر
اختياري عام لجميع طلاب وطالبات الجامعة ، ومقرر اجباري لطلاب الجغرافيا
والتخطيط بكلية ...
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.
Pinctada radiata (pearl oyster): A bioindicator for metal pollution monitoring in the Qatari waters (Arabian Gulf)
(
Springer Nature
, 1998 , Article)
Bivalves are extensively used in monitoring programmes in the marine environment due to their ability to concentrate pollutants to several orders of magnitude above ambient levels in sea water. Commonly, the levels of ...