تصفح حسب العنوان
السجلات المعروضة 2935 -- 2954 من 50233
-
Approximate analytic solutions of transient nonlinear heat conduction with temperature-dependent thermal diffusivity
( Hindawi Publishing Corporation , 2014 , Article)A new approach for generating approximate analytic solutions of transient nonlinear heat conduction problems is presented. It is based on an effective combination of Lie symmetry method, homotopy perturbation method, finite ... -
Approximate Solution For A Problem Of Propagation Of Elastic-Plastic Wave In The Half-Space
( Qatar University , 1984 , Article)In this paper, we consider a half-space occupying an elastic-plastic medium. Treatments were carried out under the assumption of perpendicular load, on boundary which propagates with a constant speed D. The assumption ... -
Approximate solutions to the generalized time-fractional ito system
( Forum-Editrice Universitaria Udinese SRL , 2017 , Article)In this work, we consider the time-fractional version of the well-known integrable Ito system to study the effect of its fractional index "memory index". A modified approach of a relatively new method called residual power ... -
Approximating the Distribution of Quadratic Forms Using Orthogonal Polynomials
( Qatar University , 1999 , Article)In this paper we propose some techniques to approximate the distribution of quadratic forms in normal random variables. The first two techniques will be based on orthogonal polynomials, namely; the Hermitte and Laguerre ... -
Approximating the tail probabilities of the longest run in a sequence of Bernoulli trials
( Taylor and Francis Ltd. , 2018 , Article)We consider the longest run of either successes or failures in a sequence of (Formula presented.) Bernoulli trials. The exact distribution of this random variable is obtained using probability generating function techniques. ... -
An Approximation Leading To The Binomial Distribution In The Stochastic Treatment Of A Reversible Chemical Reaction
( Qatar University , 1992 , Article)The exact equilibrium distribution of the number of molecules of C in the reversible chemical reaction A+B ^=S: C is shown to converge to the binomial distribution when N is finite, M—»!K, K—>0 in such a way that KM is ... -
Approximation of Pore Space with Ellipsoids: A Comparison of a Geometrical Method with a Statistical one
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)We work with tomographic images of pore space in soil. The images have large dimensions and so in order to speed-up biological simulations (as drainage or diffusion process in soil), we want to describe the pore space with ... -
Aptian To Cenomanian Palynomorphs From The Qarun 2-1 Borehole, Western Desert, Egypt
( Qatar University , 1993 , Article)Rich distinctive, miospore assemblages are recovered from four sidewall core samples obtained from the Kharita Member of Burg El Arab Formation in the Qarun 2-1 borehole located in the eastern part of the North Western ... -
Aquaculture from inland fish cultivation to wastewater treatment: a review
( Springer Nature , 2023 , Article)The aquaculture industry is rapidly developing, generating a high amount of wastewater. Inland aquaculture effluents contain nutrients and other substances that can cause eutrophication and the emergence of resistive ... -
Aquaculture sediments amended with biochar improved soil health and plant growth in a degraded soil
( Elsevier , 2023 , Article)Sustainable and safe management of aquaculture sediments is of great concern. Biochar (BC) and fishpond sediments (FPS) are rich in organic carbon and nutrients and thus can be used as soil amendments; however, it is not ... -
Aquaporins Are One of the Critical Factors in the Disruption of the Skin Barrier in Inflammatory Skin Diseases
( MDPI , 2022 , Article Review)The skin is the largest organ of the human body, serving as an effective mechanical barrier between the internal milieu and the external environment. The skin is widely considered the first-line defence of the body, with ... -
Aqueous dispersions of carbon black and its hybrid with carbon nanofibers
( Royal Society of Chemistry , 2018 , Article)The aqueous dispersions of a special type of carbon black (CB) in 1 M lithium bis(trifluoromethanesulfonimide) electrolyte is mainly controlled by the affinity of the aqueous electrolyte towards the CB particles rather ... -
Aqueous electrolyte system for porous silicon using electrochemical anodization
( IEEE Xplore , 2013 , Conference Paper)Electrochemical anodization on n-type silicon was performed with silicon as anode and platinum as cathode in a weak-acid aqueous electrolyte containing orthophosphoric acid and ammonium fluoride. Anodization was carried ... -
Aqueous ethylaminoethanol blended solvents: Promising candidates for CO2 capture
( AIChE , 2015 , Conference Paper)This paper reports the investigation of effect of temperature on physico-chemical properties of formulated solvent (comprises on ethylaminoethanol, N-methyl-2-pyrollidone, and K2CO3/KHCO3) and reaction kinetics of the ... -
Aqueous Extract Of Origanum Syriacum Inhibits Proliferation, Migration, Adhesion As Well As Erk1/2 Phosphorylation In Aggressive Breast Cancer
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)Background: Breast Cancer is one of the leading causes of cancer related mortality in women, both in Qatar and the world. Despite the available treatments the incidence of breast cancer is increasing. This highlights the ... -
Aquifer storage and recovery (ASR): A strategic cost-effective facility to balance water production and demand for Sharjah
( Elsevier B.V. , 2004 , Article)Aquifer storage and recovery was evaluated as a strategic water storage facility and as a tool to reduce overallcost of water production. This work investigated the size, cost, and mode of operation required to run the ... -
Arab 'Parliamentarisation' in the Arab Spring context: The normative vs. the practical
( Deutsches Orient-Institut , 2016 , Article Review)[No abstract available] -
Arab female and male perceptions of factors facilitating and inhibiting their physical activity: Findings from a qualitative study in the Middle East
( Public Library of Science , 2018 , Article)© 2018 Donnelly et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the ...
