College of Arts & Sciences: Recent submissions
Now showing items 921-940 of 3507
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On Time-Dependent Rheology of Sutterby Nanofluid Transport across a Rotating Cone with Anisotropic Slip Constraints and Bioconvection
( MDPI , 2022 , Article)The purpose and novelty of our study include the scrutinization of the unsteady flow and heat characteristics of the unsteady Sutterby nano-fluid flow across an elongated cone using slip boundary conditions. The bioconvection ... -
Computational Analysis for Bioconvection of Microorganisms in Prandtl Nanofluid Darcy-Forchheimer Flow across an Inclined Sheet
( MDPI , 2022 , Article)The two-dimensional boundary layer flow of a Prandtl nanofluid was explored in the presence of an aligned magnetic field over an inclined stretching/shrinking sheet in a non-Darcy permeable medium. To transform the PDEs ... -
The New Turkey: The Spread of Turkish Military Bases Abroad, Role and Indications 2002-2020
( The Deanship of Scientific Research -The University of Jordan , 2023 , Article)Objectives: This study aims to answer and investigate the following questions: What is the reason for having Turkish military outside Turkey, including the hosting of Turkish military bases abroad? Do these bases reflect ... -
Optimization of bioinsecticides overproduction by Bacillus thuringiensis subsp. kurstaki using linear regression
( Polish Society of Microbiologists , 2013 , Article)A multiple linear regression analyses were performed to screen for the significant factors simultaneously influencing production of delta-endotoxin, proteolytic activities and spore formation by a Bacillus thuringiensis ... -
Characterization and assessment of process water from oil and gas production: A case study of process wastewater in Qatar
( Elsevier , 2022 , Article)This study characterized and assessed three different process water (PWWs) (S-1, S-2, and S-3) from oil and gas production in Qatar. The wastewater generated in various processing stages contains many harmful components ... -
Microbially induced calcite precipitation in calcareous soils by endogenous Bacillus cereus, at high pH and harsh weather
( Elsevier , 2020 , Article)Microbially induced calcite precipitation (MICP) improves the physical properties of soils by increasing the solid content, decreasing the pore sizes and improving the rigidity of the particle-to-particle contact ending ... -
Application of statistical experimental design for optimisation of bioinsecticides production by sporeless Bacillus thuringiensis strain on cheap medium
(2013 , Article)In order to overproduce bioinsecticides production by a sporeless Bacillus thuringiensis strain, an optimal composition of a cheap medium was defined using a response surface methodology. In a first step, a Plackett-Burman ... -
The use of principle component analysis and MALDI-TOF MS for the differentiation of mineral forming: Virgibacillus and Bacillus species isolated from sabkhas
( Royal Society of Chemistry , 2020 , Article)Occurrence of mineral forming and other bacteria in mats is well demonstrated. However, their high diversity shown by ribotyping has not been explained, although it could explain the diversity of formed minerals. Common ... -
Investigating the effect of polymer-modified graphene oxide coating on RO membrane fouling
( Elsevier , 2022 , Article)The development of novel reverse osmosis (RO) membranes resistant to multiple types of fouling is a need to secure clean water production and meet rising water demands. In this paper, the RO membrane surface-functionalized ... -
Bayesian network and response surface methodology for prediction and improvement of bacterial metabolite production
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)The optimization of antifungal activity production by Bacillus amyloliquefaciens was carried out using Response Surface Methodology (RSM) in two steps. The first step involved the screening of cultural parameters affecting ... -
Evidencing the role of carbonic anhydrase in the formation of carbonate minerals by bacterial strains isolated from extreme environments in Qatar
( Elsevier , 2022 , Article)Calcium carbonate, one of the most abundant minerals in the geological records is considered as primary source of the carbon reservoir. The role of microorganisms in the biotic precipitation of calcium carbonate has been ... -
Date pits based nanomaterials for thermal insulation applications - Towards energy efficient buildings in Qatar
( Public Library of Science , 2021 , Article)Air-conditioning systems make the most significant part of energy consumption in the residential sector. There is no denying that it is essential to produce a comfortable indoor thermal environment for residents in a ... -
Interaction between indigenous hydrocarbon-degrading bacteria in reconstituted mixtures for remediation of weathered oil in soil
( Elsevier , 2022 , Article)It has been demonstrated that biostimulation is necessary to investigate the interactions between indigenous bacteria and establish an approach for the bioremediation of soils contaminated with weathered oil. This was ... -
Valorization of palm tree (Phoenix dactylifera L.) leaves from harsh weather climate by silage using endogenous lactic acid bacteria, and application of MALDI-TOF MS for study of populations dynamics
( Elsevier , 2023 , Article)Preservation of green palm leaves by silage preserves them as green feed in addition to the added value of probiotics and prebiotics. In this work, the characterization of fresh palm tree leaves was performed. The isolation ... -
Reuse of Sludge as Organic Soil Amendment: Insights into the Current Situation and Potential Challenges
( MDPI , 2023 , Article Review)Sludge generation as an organic by-product of wastewater treatment has seen a consistent increase worldwide due to population growth and industrial activities. This poses a chronic challenge regarding management options ... -
Shear and Tensile Strength Measurements of CaCO 3 Cemented Bonds between Glass Beads Treated by Microbially Induced Carbonate Precipitation
( American Society of Civil Engineers (ASCE) , 2023 , Article)The particle-scale shear and tensile strength measurements of microbial-induced calcite precipitation (MICP) treatment have been investigated in this paper. Glass beads were used to represent sand particles. Three ... -
A social-ecological perspective for emerging cities: The case of Corniche promenade, “urban majlis” of Doha
( EnPress Publisher, LLC , 2022 , Article)In the past decade, the capital city of Doha of the State of Qatar has experienced rapid urban expansion and other changes due to globalization, which has caused (i) the loss of a compact urban pattern, (ii) landscape ... -
Melt Processing and Properties of Polyamide 6/Graphene Nanoplatelet Composites
( ICCCM , 2015 , Conference Paper)In this paper, the processing and characterization of Polyamide 6 (PA6) / graphite nanoplatelets (GNPs) composites is reported. PA6/GNPs composites were prepared by melt-mixing using an industrial, co-rotating, intermeshing, ... -
Melt processing and characterisation of polyamide 6/graphene nanoplatelet composites
( Royal Society of Chemistry , 2015 , Article)Graphene, due to its outstanding properties, has become the topic of much research activity in recent years. Much of that work has been on a laboratory scale however, if we are to introduce graphene into real product ... -
Processing and characterization of polyethylene-based composites
( Taylor & Francis , 2015 , Article)Thermoplastic matrix polymer composites have gained commercial success in the semistructural and structural applications. Polyethylene (PE) is one of the most versatile and widely used thermoplastics in the world because ...