Now showing items 413-432 of 2240

    • Floating capital pattern and biomass slope allocation method in the life history of calotropis procera (AIT.) AIT. F. 

      Ismail, A. M. A. [احمد محمد علي اسماعيل] ( Qatar University , 1992 , Article)
      Plants of the woody perennial Calotropis procera (Asclepediaceae) were grown from seed to seed-set in an open field. Smith's slope allocation and fractional-allocation or percentage methods were used to study dry matter ...
    • The Flora of The State of Qatar: Its History and Present-Day Status 

      Abdel Bari, Ekhlas M.M.; عبد الباري, اخلاص محمد ( Qatar University , 2005 , Article)
      The history of botanical exploration in the State of Qatar is of recent origin. Various collections culminated in 2 major Floras for the State of Qatar in 1981 and 1983. Since then, further collections and focus on several ...
    • Flow and Fracture Behaviour of Tungsten Fiber Reinforced Superalloy Composites-Effect Of Specimen Geometry 

      Kandeil, A. Y. ( Qatar University , 1989 , Article)
      The influence of aspect ratio (i.e. width to height ratio) of test specimens on the flow and fracture behaviour of fiber reinforced composites is herein examined. The composite material was prepared by isostatic pressing ...
    • Flow Routing Calculations For Water Resources Management Using Spreadsheets 

      El Bahrawy, Aly N. ( Qatar University , 1999 , Article)
      Flow routing calculations are very important for water resources engineers for analyzing and designing water engineering systems such as reservoirs, stocmwater conduits and detention ponds, spillways, pumping stations, ...
    • Fluometuron Induced Growth, Chemical And Photosynthetic Changes In Chlorella Vulgaris 

      Younis, M. E. [محمود الباز يونس]; Soliman, A. I.; Osman, M. E. H. ( Qatar University , 1988 , Article)
      Presence of fluometuron at different concentrations in the culture medium of Chlorella vulgaris induced pronounced inhibition in the growth rate and dry weight of the alga throughout the experimental period. Furthermore, ...
    • Foraminifera And Age Of The Araej Formation In The Dukhan Oil Field, Western Qatar Arabian Gulf 

      Hewaidy, Abdel Galil [عبد الجليل عبد الحميد هويدي]; Al Saad, Hamad ( Qatar University , 1992 , Article)
      The detailed examination of the three members of the Araej Formation (lower Araej, Uwainat and upper Araej) in four wells, in the Dukhan Field, led to the identification of 36 foraminiferal species. Of these, 29 species ...
    • Forecasting Of The Storm Surge In Winter At Alexandria (Egypt) 

      El Gindy, A. A. H. [احمد عبد الحميد الجندي]; El Din, S. H. Sharaf; Moursy, Z. A. ( Qatar University , 1992 , Article)
      Since storms frequently occur in the winter season, at Alexandria, SE of the Mediterranean Sea. storm surges often affect this area. In this paper, we attempt to forecast the storm surge heights in the commercial Western ...
    • Formation of Usual and Bridging Complexes using organoselenium and -Tellurium compounds 

      Abid, Khalid Y.; Al Maydama, Hussein M.; عبد, خالد يحيى; الميدمة, حسين محمد ( Qatar University , 2005 , Article)
      The reactions of l,3-benzoselenadiazole with some diiodo selenium and tellurium heterocyclic compounds have led to the formation of charge transfer complexes. From the same reactions but in the presence of I9PtC14 new types ...
    • Formation Parameters Of The Lower Eocene Rocks In Qatar 

      El Sayed, Abdel Moktader A. [عبد المقتدر عبد العزيز السيد] ( Qatar University , 1986 , Article)
      The study of some carbonate rock samples collected from four different locations in Qatar and attributed to the Rus Formation (Lower Eocene) reveals that these rocks are mainly heterogeneous in their petrophysical ...
    • Frame Synchronization In Ofdm Systems Using Neural Networks, With Dsp Implementation 

      Al Meer, Mohamed H. ( Qatar University , 2002 , Article)
      This paper presents a method for estimation of the timing offset in OFDM (Orthogonal Frequency Division Multiplexing) systems. The author showed that it is possible to detect the start of the OFDM blocks without the use ...
    • French literary influences on Joseph Conrad 

      Pratt, Leighton ( Qatar University , 1991 , Article)
    • Full Scale Performance of Primary Settling Tanks 

      Ahmad, Shamim; Murad, M.; Javed, K. H. ( Qatar University , 1989 , Article)
      The characteristics and the flowrate of municipal wastewater from the city of Doha, located in the Arabian Gulf have been studied to examine their effect on the performance of the primary settling tanks at the local sewage ...
    • Functional adaptations of fig trees (ficus carica, l.) In agroecosystems of the western mediterranean desert of Egypt. 

      Abdel Razik, M. S.; El-Darier, S.; عبد الرازق, محمد سعد الدين; الضرير, سلامة عمر ( Qatar University , 1991 , Article)
      The ecophysiological characteristics of fig (Fi'cus carica, L.) trees, growing with maximum activity during the hot and dry summer, were studied in relation to growth, carbon partitioning, nutrient balance and water use. ...
    • Functions Near Of Na-Continuity 

      Mahmoud, R. A. [رمصان عبد العاطي محمود]; Nasef, A. A.; El-Monsef, M. E. Abd ( Qatar University , 1989 , Article)
      In 1986, the concept of Na-continuity was initiated by Chae et al., this leads us to introduce two classes of functions, namely strongly Na-continuity and weakly Na-continuity. We characterize these new types. Several ...
    • Fungi Associated With The Hair Of Goat And Sheep From El-Bahrain 

      El Said, A. H. M. [احمد حسين محمد السيد]; Abdel-Sater, M. A. ( Qatar University , 1995 , Article)
      The mycoflora on the hair in 25 samples of each of goats and sheep collected from El - Bahrain was analysed using two isolation methods at 25 !C. Seventy species and 3 varieties belonging to 31 genera were collected from ...
    • Gamma Irradiation of 4th Instar Larva of Angoumois Grain Moth and Effects on Parent and Their Generations 

      Boshra, Salwa A. [سلوى عزمي بشرى] ( Qatar University , 2006 , Article)
      Late fourth stage larvae of Angomous grain moth, Sitotroga cerealella (Olivier) were gamma irradiated with doses 0 ( control), 25, 50 75, 100, 125 and 150 Gy. The moths originated from larvae irradiated with 150 Gy became ...
    • Gas Saturation Monitoring In Heterogeneous Reservoir Using Tdt Modeling Technique 

      Hamada, G. M; Dahab, A.A.; Abdel Dayem, M. M.; Heikel, S. ( Qatar University , 1999 , Article)
      The Zeit Bay field reservoir units consist of sandstone and carbonates, partially overlaying a tilted block of fractured basement reservoir with a complex drive mechanism. A secondary recovery scheme of gas re-injection ...
    • Gc-ms analysis and antimicrobial activity of volatile oil of Pituranthos tortuosus (desf.) 

      Abdel Ghani, A.; Hafez, S. S.; عبد الغني, عفاف; حافظ, سامية صلاح ( Qatar University , 1995 , Article)
      Volatile oil of Pituranthos tortuosus (Desf.), family Umbelliferae was prepared in yield of (0.5%). GC-MS analysis of the oil resulted in identification of eight components. Dill apiole was the main constituent (94.76%). ...
    • Generalized Airy's- and taylor Integral Functions 

      Gabr, M. K [محمد كامل جبر]; Shalem, Sh. ( Qatar University , 1982 , Article)
      In this paper a generalized form of Airy's function has been estimated and an asymptotic expansion for one of its types is obtained. Furthermore, an improved formula could be induced to acquire the asymptotic expansion of ...
    • Generation of Sets of Sequences lsomorphic to Walsh Sequences 

      Al Cheikha, Ahmad [احمد حمزة الشيخة] ( Qatar University , 2005 , Article)
      Walsh sequences of the order 2k, k positive integer, form an additive group generated by Rademacher sequences set of ft-order. Except the zero sequence, Walsh sequences form an orthogonal set. Our present work allows us ...