QU Ceased Journals: Recent submissions
Now showing items 1021-1040 of 2240
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Population Structure And Growth Curve Of Acanthopleura Gemmata (Mollusca: Polyplacophora) In The Northwestern Red Sea
( Qatar University , 1996 , Article)Studies on Acanthopleura gemmata population were carried out in a site located on northwestern coast of the Red Sea called Sharm Elnagha, 40 km south of Hurghada city, Egypt (26° 56' N and 43° 00' E). In these studies, the ... -
Fatty acid composition of sargassum denticulatua1and s. Latifouum as influenced by the time of collection and the plant organ
( Qatar University , 1995 , Article)Fatty acid profile of two species of Sargassum namely, 5. denticulatium (Forsk). Borgesen and S. latifolium (Turn) Ag., from the Red Sea coast of Egypt was studied. Fatty acid data indicate that there is a strong seasonal ... -
Isolation and Characterization of Pollulan Produced by a Local Isolate of Aureobasidium Pullulans
( Qatar University , 2000 , Article)A local isolate of Aureobasidium pullulans was obtained from fig leaves surface. The isolate was identified as A. pullulans on the basis of appearance of polymorphism in the colonies, melanin pigment and pullulan production ... -
Intensive shrimp Penaeus semisulcatus Dee Haan, culture in the Arabian Gulf during the summer
( Qatar University , 1999 , Article)P. semisulcatus juveniles (average weight 9.7g) from Manifa Lagoon on the Arabian Gulf were randomly stocked in tanks (0.8m3) at three stocking density levels (25, 50 and 75 shrimp/m3) in four replicates. The tanks were ... -
Experimental Investigation of the N-Pbs/P-Si Heterojunction Band Lineup with I-V and C-V Measurements
( Qatar University , 2005 , Article)In this paper we present experimental investigation of band lineup of near ideal PbS/Si heterojunction diode using I-V and C-V measurements. The C-V measurements show that the fabricated diodes were abrupt type, and the ... -
Separation and preconcentration of malathion and azamethiphos by Unloaded polyurethane foams
( Qatar University , 1994 , Article)The feasibility of using unloaded polyether type polyurethahe foams for the extraction and separation of malathion and azamethiphos in batch and column operations has been examined. The effects of pH, ionic strength, shaking ... -
Analysis of dopant diffusion in molten germanium induced by pulsed nd : yag laser
( Qatar University , 1995 , Article)Laser - induced diffusion of various dopant elements into intransic germanium based on the dipping of Ge into dopant solution, have been used to produce doped ge layer using yag pulse laser with 300us duration ( A, = 1.664(1 ... -
Spectroscopy in Corrosion Studies of Copper
( Qatar University , 1994 , Article)Spectrophotometric measurements were used to study corrosion of copper in aqueous solutions containing the four following depolarizers: K2Cr2O-j, K2S2O8, Fe(NH4)(SC>4)2 and CCI3COOH. A silica cell was used for the corrosion ... -
Biochemical studies on the relationship between hypothyroidism and/or some Rheumatic diseases
( Qatar University , 1994 , Article)Sixty seven patients were selected and divided into four groups according to their clinical condition covering normal controls, hypothyroid patients suffering from both hypothyroidism and rheumatic disorders and rheumatic ... -
Cellulose - Decomposing Fungi From Saudi Arabian Soils
( Qatar University , 1996 , Article)Thirty fungal species belonging to fifteen genera were collected from 30 soil samples on cellulose Czapek agar. The highest number of fungal species was isolated from Dammam (20 species) followed by Niomas (18 species), ... -
A review of the trematode genera Haplosplanchnus Looss, 1902 and Prohaplosplanchnus Tang and Lin, 1978 with redescription of three species from the mullet in Libya
( Qatar University , 1997 , Article)The trematode genera Haplosplanchnus Looss, 1902 and Prohaplosplanchnus Tang Lin, 1978 were reviewed. H. indica Gupta and Ahmad, 1979, H, mugilis Nahhas and Cable, 1964 and P. diorchis Tang and Lin, 1979 were redescribed ... -
Total Mercury Levels In The Coastal Environment Of Qatar (Arabian Gulf)
( Qatar University , 1999 , Article)The levels of total Mercury (t-Hg) were determined in various segments of the marine environment of Qatar. Several coastal stations, both on the East as well as the West coast of Qatar were worked for t-Hg in seawater, ... -
Investigation Of Single-Update Memoryless Cg-Methods
( Qatar University , 1996 , Article)Two new CG-methods are proposed in this work for nonlinear unconstrained optimization problems which are considered as memoryless Variable Metric (VM) methods. They are derived for the inexact line searches and evaluated ... -
Constituents Of Centaurea Species
( Qatar University , 1992 , Article)A comprehensive review of Centaurea species including all the isolated consituents is given. The biological activities of the studied species are also reported. -
Methylated Flavonoids From Artemisia Monosperma
( Qatar University , 1989 , Article)Investigation of the flavonoid constituents of Artemisia monosperma resulted in the isolation and identification of four methylated flavonoids: quercetin 3,3',4'-trimethylether, diosmetin (luteolin 4'-methylether), ... -
Indecomposable Representations Of Order Of E6
( Qatar University , 1985 , Article)The extended Dynkin diagram is a valued graph. We are going to construct a Baechstrom order A associateed to Eg. We prove, by constructions, that the order A of infinite lattice-type but can be listed (tame-type), i.e., ... -
Lineament Analysis Of Qatar Peninsula Based On Landsat Imagery
( Qatar University , 1990 , Article)Photo-interpretation of Landsat MSS images of Qatar Peninsula reveals several surface lineaments of different types, extentions and trends. Some of these photo-lineaments are of structural nature while others represent ... -
Study Of Aerobiology Of Alexandria, Egypt
( Qatar University , 1991 , Article)The present study provides a survey of atmospheric pollen and fungal spores in the city of Alexandria with the aim of supplying information that may be useful in the treatment of aeroallergies. Considerable attention has ... -
Characterization of Polymers in Dilute Solutions
( Qatar University , 1997 , Article)Basic moleculer characterisitics of polymers are: molecular architecture, molecular weight and size, and their distributions. All these characterisitics are derived from measurements of very dilute solutions. Methods of ... -
An early marker of monoclonal light chain protein In bladder cancer
( Qatar University , 1994 , Article)Bladder cancer complicating schistosomiasis is a major cause of cancer mortality in Egypt. It affects farmers who suffer from repeated and severe chronic schistosomal cystitis. The late presentation of this disease is ...
