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السجلات المعروضة 1509 -- 1528 من 49336
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Ab initio molecular dynamics investigation of CH4/CO2 adsorption on calcite: Improving the enhanced gas recovery process
( American Chemical Society , 2020 , Article)Ab initio molecular dynamics simulations of CH4 and CO2 on the calcite (104) surface have been carried out for the molecular level analysis of CO2-enhanced gas recovery process (EGR). This process takes advantage of the ... -
Ab Initio molecular dynamics of the dissolution of oilfield pyrite scale using borax
( Elsevier B.V. , 2020 , Article)Iron sulfide scales, particularly pyrite, form in oil and gas underground tubing and surface equipment thus blocking the flow of fluids and halting production. Therefore, the development of physicochemical processes for ... -
Ab initio molecular dynamics study of the interlayer and micropore structure of aqueous montmorillonite clays
( Elsevier Ltd , 2015 , Article)Ab initio molecular dynamics simulations have been performed to gain an understanding of the interfacial microscopic structure and reactivity of fully hydrated clay edges. The models studied include both micropore and ... -
Ab initio study on the formation of triiodide CT complex from the reaction of iodine with 2,3-diaminopyridine
( Elsevier , 2010 , Article)The charge transfer (CT) interaction between iodine and 2,3-diaminopyridine (DAPY) has been thoroughly investigated via theoretical calculations. A Hartree–Fock, 3-21G level of theory was used to optimize and calculate the ... -
Ab-Initio Molecular Dynamics investigation of gas adsorption on α-quartz (001) for CO2 enhanced natural gas recovery
( Elsevier B.V. , 2021 , Article)In this work, the interaction of methane and carbon dioxide on α-quartz with surface 001, with a siloxane termination (dense) surface was investigated by means of Ab-Initio Molecular Dynamics. Different temperatures were ... -
Abandoned petroleum wells as sustainable sources of geothermal energy
( Elsevier Ltd , 2014 , Article)A reliable heat transfer model was developed to determine the performance of a double pipe heat exchanger retrofitted to an abandoned petroleum well. The proposed model is compared against an analytical heat transfer model ... -
ABAQUS Modelling and Experimental Tests Comparison for Certain Classes of Composite Isolated Joints
( Qatar University Press , 2023 , Conference Paper)Depending on the type of configuration and connector arrangement, beam-to-column end-plate joints can be rigid, semi-rigid, or pinned. Fully restrained joints are required for rigid frames in which it is anticipated that ... -
Abdominal Fat Is Directly Associated With Inflammation In PersonsWith Type-2 Diabetes Regardless Of Glycemic Control – A Jordanian Study
(2019 , Article)Background and aim: Systemic inflammation is related to the progression of complications associated with diabetes. This study aimed to investigate the association between general and abdominal obesity and inflammation ... -
Aberrant DNA methylation of PTPRG as one possible mechanism of its under-expression in CML patients in the State of Qatar
( Wiley Open Access , 2020 , Article)Several studies showed that aberrant DNA methylation is involved in leukemia and cancer pathogenesis. Protein tyrosine phosphatase receptor gamma (PTPRG) expression is a natural inhibitory mechanism that is downregulated ... -
Aberrant driving behaviors as mediators in the relationship between driving anger patterns and crashes among taxi drivers: An investigation in a complex cultural context
( Taylor & Francis , 2023 , Article)Objective: Taxis have become an integrated component of Qatar’s urban transportation network due to their convenience, comfort, and flexibility. Qatar has seen an uptick in the demand for professional taxi drivers. Most ... -
Aberrant sialylation of a prostate-specific antigen: Electrochemical label-free glycoprofiling in prostate cancer serum samples
( Elsevier B.V. , 2016 , Article)Electrochemical detection method allowing to detect prostate-specific antigen (PSA), a biomarker of prostate cancer (PCa), with PSA glycoprofiling was applied in an analysis of PCa serum samples for the first time. ... -
ABET accredited programs كلية الهندسة وبرامج معتمدة عالمياً
( جامعة قطر , 2021 , Video) -
Ability and Hurdle to Provide Banking Online Services: A Case Study of Banking Employees in Nigeria
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)Identifying the employee version regarding the necessities of customers and the status of the technological initiatives is one of the latest strategies of the online banking companies. As many of the studies are limited ... -
Abiotic stress applied to Tetraselmis subcordiformis reveals enhanced metabolic responses and increased production of Omega-3 fatty acids: A Metabolomic approach
( Elsevier , 2023 , Article)The appeal of high value algal metabolites is certain due to their sustainability, low energy and space requirements. Yet, commercial-level production of such products is limited and has the potential to be enhanced. In ... -
Abnormal brain structure and behavior in MyD88-deficient mice.
( Elsevier , 2021 , Article)While the original protein Toll in Drosophila melanogaster regulates both host defense and morphogenesis, the role of its ortholog Toll-like receptors (TLRs), the interleukin 1 receptor (IL-1R) family, and the associated ... -
Abnormal corneal nerve morphology and brain volume in patients with schizophrenia
( Nature Research , 2022 , Article)Neurodevelopmental and neurodegenerative pathology occur in Schizophrenia. This study compared the utility of corneal confocal microscopy (CCM), an ophthalmic imaging technique with MRI brain volumetry in quantifying ... -
Abnormal release of toxic gases from natural gas processing plants
( American Society of Mechanical Engineers (ASME) , 2001 , Conference Paper)Qatar, one of the Arabian Gulf States, possesses one of the world's largest non-associated gas fields. Most of the country's development plans are based on the preparation of natural gas for export and local use. Under ...
