Browsing Qatar University Institutional Repository by Title
Now showing items 12713-12732 of 27452
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Kinetics and Mechanistic Studies of the Bromination of Some Substituted Tetralones, Part 1
( Qatar University , 2000 , Article)The rate of bromination of 2-benzal-l-tetralone (II) and its derivatives p-methyl (12), 77-chloro (13), ffi-chloro (14), and p-nitro (15) have been studied in chloroform. The study indicated first order dependence on each ... -
Kinetics and thermodynamics of enhanced adsorption of the dye AR 18 using activated carbons prepared from walnut and poplar woods
( Elsevier , 2015 , Article)Activated carbons prepared from walnut and poplar woods are used as economical adsorbents for the rapid removal and fast adsorption of Acid Red 18 dye from the aqueous solutions; the kinetics, isotherm and thermodynamics ... -
Kinetics of alizarin dye hydrolysis in alkaline medium for wastewater treatment
( Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR , 2021 , Article)The kinetics of the hydrolysis of Alizarin dye (ALZ) in the basic medium is investigated for the purpose of wastewater treatment. ALZ represents a group of aromatic dyes, that are heavy, toxic, and non-biodegradable. The ... -
Kinetics of alkoxysilanes and organoalkoxysilanes polymerization: A review
( MDPI AG , 2019 , Article Review)Scientists from various different fields use organo-trialkoxysilanes and tetraalkoxysilanes in a number of applications. The silica-based materials are sometimes synthesized without a good understanding of the underlying ... -
Kinetics of alkoxysilanes hydrolysis: An empirical approach
( Nature Research , 2019 , Article)Alkoxysilanes and organoalkoxysilanes are primary materials in several industries, e.g. coating, anti-corrosion treatment, fabrication of stationary phase for chromatography, and coupling agents. The hydrolytic polycondensation ... -
Kinetics of CO 2 reaction with N-methyldiethanolamine and aminobutanol using stopped flow technique
( Institute of Physics Publishing , 2018 , Conference Paper)Removal of carbon dioxide (CO 2 ) from natural gas streams is mandatory to avoid pipeline corrosion, increase the heating value of the gas and reduce the gas volume in case of liquefied natural gas (LNG). The use of ... -
Kinetics of CO2 Adsorption/Desorption of Polyethyleneimine-Mesoporous Silica
( Wiley-VCH Verlag , 2017 , Article)The kinetics of adsorption of CO2 on solid sorbents based on polyethyleneimine/mesoporous silica (PEI/MPS) was studied by following the mass gain during CO2 flow. Linear (PEI-423) and branched (PEI-10k) polymers were ... -
Kinetics of CO2 Reaction with Amino-Butanol and Piperazine Using Stopped-Flow Apparatus
(2023 , Master Thesis)This research project focuses on the kinetics of CO2 reaction with Amino-butanol (AB) and Piperazine (PZ) for carbon capture. The study examines the CO2 reaction rate of different concentrations of the AB-PZ solution (0.2, ... -
Kinetics of CO2 reaction with solutions of n-methyl-diethanolamine mixed with selected amino acids using stopped flow technique
( AIChE , 2015 , Conference Paper)Kinetics of CO2 reactions with blended solutions of N-methyldiethanolamine (MDEA) and salts of Glycine and Taurine are presented in this work. The obtained results show that the new blended solutions could be promising ... -
Kinetics of humics removal from water and wastewater using granular activated carbon, iron-coated activated alumina, and beta ferric oxihydroxide
(2010 , Article)Application of kinetic models to represent the removal of humic substances from water and wastewater was investigated. An adsorbate-adsorbent system was represented by humic substances and three adsorbents, namely granular ... -
Kinetics of reactive absorption of CO2 using aqueous blend of potassium carbonate, ethylaminoethanol, and N-methyl-2-Pyrollidone (APCEN solvent)
( Taiwan Institute of Chemical Engineers , 2018 , Article)Employing the fall in the CO2 pressure method, the kinetics of the reactive absorption of CO2 in the aqueous blend of potassium carbonate, ethylaminoethanol, and N-methyl-2-Pyrollidone (APCEN solvent) is inspected by ... -
KinFit: A factual aerobic sport game with stimulation support
( Kassel University Press GmbH , 2018 , Article)Overweight and obesity is a situation where a person has stacked too much fat that might affect negatively his/her health. Many people skip doing exercises due to several facts related to the encouragement, health-awareness, ... -
KIR genotype and haplotype repertoire in Kuwaiti healthy donors, hematopoietic cell transplant recipients and healthy family members
( John Wiley and Sons Inc , 2023 , Article)The gene complex located on chromosome 19q13.4 encodes the Killer-cell Immunoglobulin-like Receptors (KIRs), which exhibit remarkable polymorphism in both gene content and sequences. Further, the repertoire of KIR genes ... -
Knockout mice: Is it just genetics? Effect of enriched housing on fibulin-4+/- mice
( Public Library of Science , 2007 , Article)Background. Fibulin-4 is an extracellular matrix protein expressed by vascular smooth muscle cells that is essential for maintaining arterial integrity. Fibulin-4-/- mice die just before birth due to arterial hemorrhage, ... -
"Know Thyself”: Racial Discrimination before the International Court of Justice – Recent Jurisprudential Developments
( Brill - Nijhoff , 2021 , Book chapter)Being the oldest United Nations human rights treaty and enjoying widespread participation, the International Convention on the Elimination of All Forms of Racial Discrimination (“CERD” or the “Convention”) was adopted ... -
Knowledge and attitudes of physiotherapists toward sleep: A survey study.
( IOS Press , 2022 , Article)Sleep has been considered as a critical brain state that affects various body functions relevant to physiotherapy (PTs) practice such as motor learning and relearning, pain management, and cognitive function. Despite the ... -
Knowledge and Attitudes on Khat Use among Yemeni Health Sciences Students
( Taylor and Francis Ltd , 2020 , Article)Background: Khat chewing has a negative impact on an individual’s life. Objectives: The study was execute to assess health sciences students’ knowledge and attitudes regarding khat use in Yemen. Methods: This survey involved ... -
Knowledge and innovation in the Lebanese software industry
( Cogent OA , 2018 , Article)The software industry is strongly influenced by knowledge and innovation. The ability to develop new solutions and services is considered essential to firm survival and growth. The innovation process, being long and costly, ... -
Knowledge and perception about pharmacovigilance among pharmacy students of universities in Sana'a Yemen
( Journal of Clinical and Diagnostic Research , 2017 , Article)Introduction: Pharmacists in community or hospital setting play a key role in reporting Adverse Drug Reaction (ADRs) during practice. Under reporting is considered as a profession malpractice worldwide. Aim: To determine ... -
Knowledge and Perception of and Attitude toward a Premarital Screening Program in Qatar: A Cross-Sectional Study
( MDPI , 2022 , Article)Premarital screening (PMS) is a primary preventive measure to decrease the incidence of certain genetic disorders and sexually transmitted diseases. This study aimed to explore the knowledge and perception of and the ...