Browsing University Publications by Title
Now showing items 697-716 of 4355
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Effects Of Gamma Radiation On The Motility And Attraction Of The Mediterranean Fruit Fly Ceratitis Capitata Wied, To Light, Colours And Odour
( Qatar University , 1988 , Article)Full grown pupae of the Mediterranean fruit fly, Ceratitis capitata were irradiated at three gamma dosages (50, 70 and 90 gray). The different effects on the motility and attraction to light colours and odour of the produced ... -
Effects Of Gamma Radiation On The Sexual Attraction Of The Mediterranean Fruit Fly. Ceratitis Capitata Wied
( Qatar University , 1987 , Article)The Mediterranean fruit (ly, Ceratitis capitata Weid, was gamma irradiated as full grown pupae with 50, 70 and 90 gray. The produced adults were examined for their attractiveness to the non irradiated (normal) other sex. ... -
Effects Of Overfishing And Abandoning Bottom Trawling On Qatar's Fisheries
( Qatar University , 1996 , Article)The present study was conducted to overview the effects of abandoning bottom trawling and increasing fishing effort on the structure and dynamics of Qatar's fisheries during 1985-1994, using the fishery statistics data, ... -
The effects of sea water immersion on the mechanical properties of low density polythylene
( Qatar University , 1997 , Article)The effects of immersion of low-density polyethylene (LDPE) m seawater for times of up to one year were studied using mechanical and ultrasonic techniques. The studies were carried out in the laboratories of the Faculties ... -
Effects of the electric field and gamma Radiation on the optical properties of Modified low density polyethylene
( Qatar University , 1997 , Article)The effect of electric field and gamma radiation on the optical properties of low density polyethylene LDPE grade CD 0230 have been studied. The samples were irradiated at gamma doses of 0-100 Mrad and varying electric ... -
Effects of the expected sea level rise on avicennia marina L: a case study in Qatar
( Qatar University , 1995 , Article)A simulation of the expected sea levels rise was carried out by imposing a state of protracted flooding on seedlings of the mangrove species Avicennia marina L. under natural conditions. The imposed flooding resulted in ... -
Effects of Using Seawater and Recycled Coarse Aggregates on Plain Concrete Characteristics
( Qatar Univesrity Press , 2020 , Conference Paper)Using seawater and/or recycled coarse aggregates (RCA) for concrete mixing is deemed advantageous from a sustainability perspective. This paper reports on the results of an experimental study on fresh and hardened properties ... -
Efficacy in developing a Sustainable, Resilient, and Interdependent Infrastructure System in the Gulf Region
( Qatar University Press , 2023 , Conference Paper)The world is becoming increasingly interconnected, and the exchange of information, knowledge, and services assists in developing and managing many aspects of the built environment. Sustainable, resilient, and interdependent ... -
Efficiency Of Ground Water Resources In Northeast Sinai Peninsula, Egypt
( Qatar University , 1993 , Article)The present study deals with actual quantitative and qualitative evaluation of the groundwater resources in El Sheikh Zuwayid-Rafah area, the northeast coast of Sinai Peninsula. The quantitative analysis is achieved by ... -
Efficient Reservoir Operation in an Arid Region with Extreme Hydrologic Flows: A Case Study, Oman's Largest Dam
( Qatar University Press , 2023 , Conference Paper)Wadi Dayqah dam (WDD) is still not operating, and its operation targets are not yet fixed. Arid hydrology and the presence of new users require a new look at this dam's operation plan. The updated and optimal operation ... -
Efficient Turbidity Removal Using a New Gel Filtration Process
( Qatar University Press , 2023 , Conference Paper)The removal of turbidity is a prime objective in the treatment of seawater, especially in the production of potable water. The water turbidity exists because of the colloidal particles or large-weight molecules that remain ... -
EFL Teachers' Phonological Awareness Beliefs and Practices: Help or Prevent EFL Children Developing Reading
( Qatar University Press , 2020 , Poster)"Families, schools and stakeholders long for developing good readers (Ponitz & Rimm-Kaufman, 2011) and would do all it takes to save young children from becoming illiterate or low achievers (Anthony & Farncis, 2005; Share ... -
Elaeagnus Angustifolia extract inhabits cell invasion of human colorectal cancer cells and increases the survival rate of the Drosophila colon cancer model
( Qatar University Press , 2021 , Poster)Colorectal cancer (CRC), the third most common type of cancer in the world, is an aggressive type of cancer with high tendency to metastasize and invade to other tissues and distant organs. Traditional CRC treatment regimen ... -
Elaeagnus Angustifolia: a Promising Medicinal Plant for Cancer Theraby
( Qatar University Press , 2020 , Poster)Introduction: Elaeagnus angustifolia (EA) is a medicinal plant that has been used for centuries in treating many human diseases, in the Middle East, including fever, amoebic dysentery, gastrointestinal problems. However, ... -
The electrical and optical properties of poly (4-ethylidene-l, 3-cyclopentylene vinylene)
( Qatar University , 1989 , Article)The intrinsic viscosity, electrical conductivity and IR absorbance were measured for the sample of poly (4—ethylidene—1, 3—cyclopentylene vinylene). The sample is strongly oxidized in air. Under vacuum the activation energy ... -
Electrical Conductivity Of Aluminum Reinforced Graphite Electrodes
( Qatar University , 1993 , Article)Composite, disc-like aluminum reinforced graphite electrodes were prepared, and an integrated parametric analysis has been performed to investigate the effect of some processing parameters on the electrical conductivity ... -
Electrical equivalent circuit (EEC) based impedance spectroscopy analysis of HTM free perovskite solar cells
( Qatar University Press , 2020 , Poster)Monolithic perovskite solar cells (mPSCs) are the multi-layered organic-inorganic hybrid cells that have been focused due to the affordable cost, ease of fabrication and noteworthy power conversion efficiency (PCE). In ... -
Electrical Properties Of The Lower Eocene Rocks In Qatar
( Qatar University , 1987 , Article)Thirteen limestone samples representing the Rus Formation (Lower Eocene) are selected' from four locations in Qatar Peninsula. These samples are subjected to electrical resistivity, porosity, shaliness factor and water ... -
Electricity Consumption and Economic Growth in Jordan: A Multivariate Approach
( Qatar University , 2015 , Article)This paper aims to examine the impact of electricity consumption on economic growth in Jordan using annual data over the period 1985-2013. To achieve the goal, an Autoregressive Distributed Lag (ARDL) approach is implemented ... -
Electrochemical behaviour of some pyrimidine derivatives: polarographic reduction of 1, 3-dimethyl-2, 4, 6(1h, 3h, 5h) pyrimidinetrione and its substituted 5-phenylazo
( Qatar University , 1994 , Article)The polarographic behaviour and spectrophotometric pKa of 1,3-dimethyl barbituric acid and 5-phenylazo substituted products were investigated in buffer solution of pH ~ 2-11. The results revealed an azo form of the substituted ...