تصفح Academic حسب العنوان
السجلات المعروضة 12341 -- 12360 من 26404
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Investigation on the effect of mud additives on the gelation performance of PAM/PEI system for lost circulation control
( Society of Petroleum Engineers , 2021 , Conference Paper)Lost circulation is one of the most common problems in the drilling of oil and gas wells where mud escapes through natural or induced fractures. Lost circulation can have severe consequences from increasing the operational ... -
Investigation on the effect of several parameters involved in the biodegradation of polyethylene (PE) and low-density polyethylene (LDPE) under various seawater environments
( Elsevier , 2024 , Article)This work investigates the biodegradation of polyethylene (PE) and low-density polyethylene (LDPE) and the leaching of their harmful additives. Micro/macro-plastics of both types were subjected to different laboratory-controlled ... -
Investigation on the effect of γ-irradiation on the dielectric and piezoelectric properties of stretchable PVDF/Fe–ZnO nanocomposites for self-powering devices
( Royal Society of Chemistry , 2018 , Article)Stretchable films of PVDF nanocomposites containing iron doped ZnO (Fe-ZnO) nanoflowers are fabricated following simple solution mixing and ?-irradiation treatment. An increase in ?-phase crystallinity is noticed for the ... -
Investigation on the impact of solvent on the photochemical properties of the photoactive anticancer drug Vemurafenib: A computational study
( Elsevier , 2020 , Article)Rationalizing the photochemical behavior of a photosensitive drug in terms of molecular properties is necessary toward understanding related potential phototoxicity. Here, we report on the effect of the molecular ... -
Investigational Study for the efficiency of Fe3O4@SiO2 nanoparticles in the Oil Recovery Process using glass micromodel
( Qatar University Press , 2021 , Poster)Nanofluids have shown their potential in the oil recovery process through surface modification. Due to their surface characteristics, they can apply to improve the oil production from reservoirs by enabling different ... -
Investigations into structure-property relationships of novel Ru(II) dyes with N,N′-Diethyl group in ancillary ligand for dye-sensitized solar cells
( Elsevier Ltd , 2019 , Article)Structure-property relationships of four novel bipyridyl Ru(II) complexes, denoted as SD-22, SD-24, SD-26 and SD-28, are reported herein. The molecular structures of all four photosensitizers were confirmed using FT-IR, ... -
Investigations of He <sup>+</sup> implantation and subsequent annealing effects in InP
( Elsevier , 2006 , Article)The influence of 70 keV He + ion implantation and subsequent annealing of Cz-indium phosphide (InP) samples has been investigated using a slow positron beam-based Doppler broadening spectrometer. Three samples with ion ... -
Investigations of multi-carrier pulse width modulation schemes for diode free neutral point clamped multilevel inverters
( Korean Institute of Power Electronics , 2019 , Article)Multilevel Inverters (MLIs) are widely used in medium voltage applications due to their various advantages. In addition, there are numerous types of MLIs for such applications. However, the diode-less 3-level (3L) T-type ... -
Investigations of plastic contamination of seawater, marine and coastal sediments in the Russian seas: a review
( Springer , 2021 , Article)Twelve seas with an integral coastline length of about 38,000 km wash upon the Russian coasts. They belong to the basins of the Atlantic, the Arctic, and the Pacific Oceans and stretch over temperate, subpolar, and polar ... -
Investigations on recent power-aware opportunistic protocols in WSN
( IEEE Computer Society , 2018 , Conference Paper)Nowdays, Wireless Sensor Networks (WSNs), Internet of Things (IoT), Industrial IoT (IIoT), and Cognitive IoT (CIoT), have attracted the attention of many researchers and industrials in different domains due to their wide ... -
Investigations on the growth abnormalities of medicago sativa l. Under field conditions
( Qatar University , 1996 , Article)Morphological growth abnormalities were pursued and studied in field-grown alfalfa (Medicago sativa L.) in Al-Kharj agricultural area, south east of Riyadh. Significant differences between normal and abnormal plants were ... -
Investing in Italy: Key legal issues for investors in the Gulf
( Bloomsbury Qatar Foundation Journals , 2015 , Article)Recent market data and press reports seem to confirm a growing interest, including from the Gulf, for investments in private and listed companies in Italy. In taking advantage of the opportunities presented by the Italian ... -
Investing in Research: Teaching the History of Qatar as An Example
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)The author of this presentation has mentor Undergraduate Research Experience program (UREP) projects. The projects' topics were directly related to social, political and commercial history of Qatar. Although, the main ... -
Investment deferral by optimal utilizing vehicle to grid in solar powered active distribution networks
( Elsevier , 2020 , Article)The load growth in the distribution grids is often handled by distribution network expansion planning. Significant part of such long-term expansion plan is required to supply on-peak load demand. The on-peak load demand ... -
InVitro Comparison of Two Single Layer Hand Sewn End-to-End Anastomosis Techniques in Normal Equine Jejunum: APilot Study
( Qatar University Press , 2020 , Poster)Background: The equine small intestine can be affected by a variety of disorders, which may require some form of bypass or anastomosis procedure. Several small intestinal anastomosis techniques have been reported in ... -
Invitro conservation of some rare and threatened desert plants in Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Background A range of natural factors, invasive animals and human activity have been severely affecting stability of the ecosystem, resulting in the annihilation of plants habitats and so plant endangerment or even extinction. ... -
Involvement of caveolae in hyperglycemia-induced changes in adiponectin and leptin expressions in vascular smooth muscle cells
( Elsevier , 2021 , Article)Hyperglycemia exerts various harmful effects on the vasculature. Studies have shown an association between the levels of the adipokines leptin and adiponectin (APN) and vascular complications in diabetes mellitus. The aim ... -
Involvement of Essential Signaling Cascades and Analysis of Gene Networks in Diabesity
( MDPI , 2020 , Article)(1) Aims: Diabesity, defined as diabetes occurring in the context of obesity, is a serious health problem that is associated with an increased risk of premature heart attack, stroke, and death. To date, a key challenge has ... -
Involvement of oxidative stress and growth at high cell density in the viable but nonculturable state of Photorhabdus temperata ssp. temperata strain K122
( Elsevier Ltd , 2010 , Article)Photorhabdus temperata ssp. temperata strain K122 represents a promising source of bioinsecticide. When cultured in an optimized medium, P. temperata exhibited restricted survival in terms of colony-forming ability on solid ... -
Iodometric microdetermination of phosphorus in organic compounds by use of An amplification reaction
( Qatar University , 1994 , Article)A high chemical amplification method is described for the iodometric microdetermination of phosphorus in organic compounds. This method depends on combustion by the oxygen flask, absorption of the combustion products in ...
