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السجلات المعروضة 1736 -- 1755 من 48073
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Adsorption of Congo Red Dye Using Activated Carbon-Fe3O4 Composite
( Qatar University Press , 2023 , Conference Paper)Activated Carbon-Fe3O4 composites were synthesized using co-precipitation method and used in batch experiments to adsorb Congo red dyes. The effect of adsorbent dosage, temperature and initial dye concentration was ... -
Adsorption of endocrine disrupting compounds and other emerging contaminants using lignocellulosic biomass-derived porous carbons: A review
( Elsevier Ltd , 2020 , Article)Hydrochars from lignocellulose biomass have received an upsurge of interest in different fields, especially in the area of adsorption. Hydrothermally produced hydrochars are effective adsorbents for removing different ... -
Adsorption of ochratoxin A from grape juice by yeast cells immobilised in calcium alginate beads
( Elsevier , 2016 , Article)Grape juice can be easily contaminated with ochratoxin A (OTA), one of the known mycotoxins with the greatest public health significance. Among the different approaches to decontaminate juice from this mycotoxin, microbiological ... -
Adsorption of organic pollutants by nanomaterial-based adsorbents: An overview
( Elsevier B.V. , 2020 , Article Review)Nanomaterial-based adsorbents have garnered increasing attention in water and wastewaters treatment applications due to their attractive properties and strong adsorption capabilities for various organic compounds. The ... -
Adsorption of organic pollutants by natural and modified clays: A comprehensive review
( Elsevier B.V. , 2019 , Article Review)Adsorption process has been widely used for treatment of wastewaters due to its simplicity and lower costs as compared to other traditional technologies. Among the alternative sorbent materials, the use of abundantly ... -
Adsorption of organic water pollutants by clays and clay minerals composites: A comprehensive review
( Elsevier Ltd , 2022 , Article Review)Clays and clay minerals are inexpensive, non-toxic, and naturally occurring minerals that have been utilized in water remediation as adsorbents. However, clays and clay minerals and those modified with heat, surfactants, ... -
Adsorption of textile dye onto modified immobilized activated alumina
( Elsevier Science B.V. , 2016 , Article)The study describes the synthesis of modified immobilized activated alumina (MIAA) and its application for the removal of textile dye from aqueous media. Immobilization was carried out by using the sol–gel method while ... -
The Adsorption Potential of Cr from Water by ZnO Nanoparticles Synthesized by Azolla pinnata
(2022 , Article)Aqueous solutions containing toxic elements (TEs) (such as hexavalent chromium (Cr (VI)) can be toxic to humans even at trace levels. Thus, removing TEs from the aqueous environment is essential for the protection of ... -
Adsorption process of n-alkanes onto BAX-1100 activated carbon: Theoretical estimation of isosteric heat of adsorption and energy distribution of heterogeneous surfaces
( Elsevier B.V. , 2018 , Article)Adsorption of the n-alkane series, C1-C7, on Westvaco BAX-1100 activated carbon were measured over very broad ranges of temperature (293-393 K) and pressure (0.06-4964 Torr), depending on the n-alkane. Different behaviors ... -
Adsorption study of Pb(II) in aqueous medium using polyaniline nanocomposites
( John Wiley and Sons Ltd , 2017 , Article)This research work presents a simple and effective way for preparation of polyaniline (PANI) nanofiber composites mixed with polyvinyl alcohol or polystyrene (PS) and their application for lead (Pb) removal from an aqueous ... -
Adsorptive batch and biological treatments of produced water: Recent progresses, challenges, and potentials
( Academic Press , 2021 , Article)Produced water is responsible for the largest contribution in terms of waste stream volume associated with the production of oil and gas. Characterization of produced water is very crucial for the determination of its main ... -
Adsorptive Properties of a Desert Salsola Vermiculate Species from Synthetic Aqueous Solutions
( Qatar University , 2006 , Article)Pollution is becoming a major environmental problem and the current trend is to use available biomass to remove toxic substances from aqueous solutions. The preliminatry adsorption results on a natural Salsola Vermiculata ... -
Adsorptive Removal of Arsenic and Mercury from Aqueous Solutions by Eucalyptus Leaves
( Springer International Publishing , 2017 , Article)The study is a first-time investigation into the use of Eucalyptus leaves as a low-cost herbal adsorbent for the removal of arsenic (As) and mercury (Hg) from aqueous solutions. The adsorption capacity and efficiency were ... -
Adsorptive removal of mercury from water by adsorbents derived from date pits
( Nature Publishing Group , 2019 , Article)The current work presented here focuses on the remediation of mercury from water using modified low-cost materials. Modified date pits, low cost, minimal pretreatment steps and locally abundant agricultural waste materials ... -
Adult appendicitis score versus Alvarado score: A comparative study in the diagnosis of acute appendicitis
( Elsevier , 2023 , Article)Background Acute Appendicitis (AA) is the most common abdominal surgical emergency. It requires proper management to decrease mortality and morbidity. Clinical scoring systems for diagnosing AA aimed to decrease the use ... -
Adult Hospital Inpatient Experience in Qatar And Associated Factors: A Cross-Sectional Study
(2020 , Master Thesis)Background: Evaluation of hospital inpatient experience (HIE) is an important measure used by healthcare organizations to evaluate the effectiveness of their current processes and understand how responsive and respectful ... -
Adult Learning Theories in Context: A Quick Guide for Healthcare Professional Educators.
( SAGE Publications , 2018 , Article)Adult learning theories play a pivotal role in the design and implementation of education programs, including healthcare professional programs. There is a variation in the use of theories in healthcare professional education ... -
Advance research progresses in aluminium matrix composites: manufacturing & applications
( Elsevier Editora Ltda , 2019 , Article Review)At present aluminium matrix composites are widely used in engineering applications. Aluminium matrix composites are providing such superior properties which cannot be achieved by any existing monolithic material. Properties ... -
Advance Warning Methodologies for COVID-19 Using Chest X-Ray Images
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)Coronavirus disease 2019 (COVID-19) has rapidly become a global health concern after its first known detection in December 2019. As a result, accurate and reliable advance warning system for the early diagnosis of COVID-19 ... -
Advanced adult granulosa cell tumor with prominent fibromatous stroma: A case report
( Elsevier , 2023 , Other)To the Editor, Adult granulosa cell tumor (AGCT) is the most common sex cord–stromal tumor and accounts for about 1% of all ovarian neoplasms.1 It is derived from granulosa cells of the ovarian follicle that are responsible ...
