تصفح University Publications حسب العنوان
السجلات المعروضة 672 -- 691 من 4358
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Effect Of Temperature On Hyalomma (Hyalomma) Impeltatum Schulze And Schlottke (Ixodoidea: Ixodidae)
( Qatar University , 1988 , Article)The effect of 21, 25, 29 and 34°C on developmental period duration, weight of different stages in the life cycle and conversion efficiency in Hyalomma (H.) impeltatum Schuize and Schlottke was investigated at 75% relative ... -
Effect Of The Apical Ectodermal Ridge On Mitotic Index In Hind Limb Bud Mesenchyme In Bufo Regularis
( Qatar University , 1991 , Article)The apical ectodermal ridge (AER) was formed at stage 51 of Bufo regularis, it persisted at stage 52 (limb bud acquiring paddle-shaped outline), then it disappeared by stage 53 (first indication of fourth and fifth toes). ... -
The effect of the insecticide (primicid) On neurosecretory cells of the earthworm aporrectodea caliginosa
( Qatar University , 1995 , Article)The effect of the insecticide "Primicid" on the neurosecretory cells of the cerebral ganglion of the earthworm Aporrectodea caliginosa was studied. The fine changes in the organelles of certain ncurosecrelory cells was ... -
Effect of the insecticide sumicidin on the biology and survival of the american cockroach nymph periplaneta americana l. (blattidae, dictyoptera).
( Qatar University , 1995 , Article)This study was conducted under laboratory conditions to evaluate the effect of sumicidin (a pyrethriod insecticide) on the heart rates, convulsion and mortality of the american coackroach nymph Periplaneta americana L., a ... -
The effect of two substituents on different Organoselenides and tellurides to form new charge - transfer complexes
( Qatar University , 1999 , Article)Different organotellurides and selenides were prepared as electron donors and reacted with p-Benzoquinone (p-BQ) and m-Dinitrobenzene (m-DNB) as electron acceptors. The resulted molecules were considered as new charge ... -
The effect of two substituents on different organoselenides and tellurides to form new charge-transfer complexes
( Qatar University , 2004 , Article)Different organotellurides and selenides were prepared as electron donors and reacted with p-Benzoquinone (p-BQ) and m-Dinitrobenzene (m-DNB) as electron acceptors . The resulted molecules were considered as new ... -
Effect Of Unfed Female Weight On The Biology Of Hyalomma (Hyalomma) Impeltatum Schulze and Schlottke (Acari: Ixodidae)
( Qatar University , 1989 , Article)Unfed female Hyalomma (Hyalomma) impeltatum Schuize and Schlottke in 4 different weight groups of 2.6-5.0, 6.2-10.0, 10.3-14.7 and 15.2-22.3 mg, respectively, were investigated for the effect of unfed female weight (UFW) ... -
Effect of UV/ozone treatment on surface hydrophilicity and humidity sensing properties of PVDF-BaTiO3 composite films
( Qatar University Press , 2021 , Poster)In this research work, we have studied the impact of UV/ozone treatment on the hydrophilicity of the PVDF-BaTiO3 nanocomposite film. We have prepared the nanocomposite solution by mixing PVDF (2.5 wt% kept constant) and ... -
Effective Moment Of Inertia And Deflections Of Reinforced Concrete Beams Under Long-Term Loading
( Qatar University , 1995 , Article)The paper presents a method for estimating long-term deflections of reinforced concrete beams by considering creep and shrinkage effects separately. Based on equilibrium and compatibility conditions a method is developed ... -
Effective Project Control within the Context of Lean Construction
( Qatar Univesrity Press , 2020 , Conference Paper)Two of the “Lean Thinking” principles relate to managing a project through relationships, shared knowledge and common goals and to removing waste where possible. Success of a project is only possible with the collaboration ... -
Effective Smart Contracts for Supply Chain Contracts
( Qatar University Press , 2021 , Poster)Blockchain is in its way of revolutionizing different sectors with its decentralized peer-to-peer networking. Smart contracts are the piece of software that have written rules to be executed automatically to update the ... -
Effectiveness of monetary and fiscal policies: the case of Qatar
( Qatar University , 2005 , Article)The controversy surrounding the effectiveness of monetary and fiscal policies is a long way from being settled. During the last three decades, oil revenues have contributed significantly to economic growth and development ... -
The Effectiveness of Teacher Behavior in Managing Academic Learning Time in Secondary Physical Education Classes in The Kingdom of Bahrain
( Qatar University , 2007 , Article)The purposes of this study were to measure the effectiveness of teacher behavior in managing academic learning time in secondary physical education classes in The Kingdom of Bahrain, and to examine the relationships ... -
Effectiveness of Teaching Listening Comprehension Strategies on Learners' Performance in this Area
( Qatar University , 2002 , Article) -
Effectiveness of the pedestrian detection strategies and pavement markings: A driving simulator study
( Qatar University Press , 2020 , Poster)Pedestrians are the most vulnerable group in the traffic and accounts for about 40,000 deaths each year worldwide. One of the main reasons is that drivers usually do not yield to pedestrian which creates serious conflicts ... -
Effects of acid smut production on Design of industrial chimneys
( Qatar University , 1990 , Article)Atmospheric, mechanical and chemical kinds of attacks on industrial chimneys constructed of brickwork, concrete and steel are discussed. Acid smut production in chimneys is described. Two of the factors, widely regarded ... -
Effects Of Chemical Pesticides On The Gravid Females And Stadia Of The Woodlouse, Porcellio Scaber (Latreille) (Isopoda, Oniscidea)
( Qatar University , 1991 , Article)Studies were made on the mortality rates of the gravid females, and on the survival and growth rates of the stadia of the woodlouse Porcellio scaber (Latreille) exposed for a period of 21 days to sub-lethal concentrations ... -
Effects of current, electrodes spacing and operational time on the removal of heavy metals from primary treated municipal wastewater using dielectrophoresis.
( Qatar University Press , 2020 , Poster)Electrocoagulation (EC) is an emerging technology that has been used to treat heavy metals from different kinds of wastewater. This paper discusses the effects of inducing Dielectrophoretic (DEP) force in EC system for the ... -
The Effects of Demographic Differences on Value System and Perceived School Climate in Qatar Elementary Public Schools
( Qatar University , 1993 , Article)Demographical differences were explored in elementary school teachers' perception of climate and value systems. The Arabic versions of OCDQ scale (Halpin and Croft, 1962) which measures Organizational Climate and the Study ... -
Effects of electric and magnetic fields on the energy levels of a hydrogenic impurity in GaAs/Gal-xAl x As heterjunction
( Qatar University , 1997 , Article)Variational method within the effective — mass approximation is used to calculate the shallow impurities states in GaAs / Gai_xAl^As heteroj unctions. Modified Fang-Howard wavefunction is used as the trial wavefunction. ...