College of Arts & Sciences: Recent submissions
Now showing items 1-20 of 3565
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On testing exponentiality under Type-I censoring
( Frontiers Media S.A. , 2023 , Article)Two new goodness-of-fit testing procedures are introduced to test exponentiality when data are subject to Type-I censoring. We proposed four test statistics for this purpose. Under extensive Monte Carlo simulations, we ... -
Dynamics of Neisseria gonorrhoeae transmission among female sex workers and clients: A mathematical modeling study
( Elsevier , 2024 , Article)BackgroundThis study aimed to examine the transmission dynamics of Neisseria gonorrhoeae (NG) in heterosexual sex work networks (HSWNs) and the impact of variation in sexual behavior and interventions on NG epidemiology. ... -
Unraveling the effect of molecular medium on the fluorosolvatochromism of the biphenyl- salicylate derivative drug Diflunisal: Experimental and computational study
( Elsevier , 2024 , Article)Understanding the photochemical behavior of a photosensitive drug through its molecular properties is crucial for assessing potential phototoxicity. In this study, we examine how the molecular microenvironment influences ... -
الاختصاصات القضائية البريطانية في قطر وفق مجلس ميثاق قطر سنة 1938
( مركز حسن بن محمد للدراسات التاريخية ودار نشر بريل , 2024 , Article)تسعى هذه الورقة إلى تحديد نطاق الاختصاص القضائي البريطاني في قطر خلال حكم الشيخ عبد الله بن جاسم آل ثاني (1913-1949)، وذلك بالاستناد إلى مدونة أرشيفية تتضمن أمرا صادرا في 4 نوفمبر 1938 أو ما اصطلح على تسميته بميثاق مجلس ... -
BNT162b2 Versus mRNA-1273 Vaccines: Comparative Analysis of Long-Term Protection Against SARS-CoV-2 Infection and Severe COVID-19 in Qatar
( Wiley , 2024 , Article)Background: This study provides a head-to-head comparison of the protection provided by the BNT162b2 and mRNA-1273 vaccines against SARS-CoV-2 infection and against severe COVID-19, covering primary series and third ... -
Evaluation of the mindray CL900i CLIA HIV Ag/Ab combo assay for sensitive and specific HIV screening compared to established methods.
( Springer Nature , 2024 , Article)Architect-HIV Ag/Ab combo chemiluminescence assay is globally recognized for its sensitivity but has a notable false-positive rate. In this study, we aim to evaluate the performance of a new cost-effective screening ... -
Network Pharmacology Integrated With Quantum-Polarized Ligand Docking and Molecular Simulation Revealed the Anti-Diabetic Potential of Curcumin
( Wiley , 2024 , Article)Diabetes mellitus is a chronic metabolic disorder affecting millions of people worldwide and causes serious complications such as diabetic nephropathy. Curcumin, a natural polyphenol derived from turmeric, has demonstrated ... -
Exploring the Dynamic Interplay of Deleterious Variants on the RAF1–RAP1A Binding in Cancer: Conformational Analysis, Binding Free Energy, and Essential Dynamics
( Wiley , 2024 , Article)The RAF1–RAP1A interaction activates the MAPK/ERK pathway which is very crucial in the carcinogenesis process. This protein complex influences tumor formation, proliferation, and metastasis. Understanding aberrant interactions ... -
Unraveling the Epigenetic Tapestry: Decoding the Impact of Epigenetic Modifications in Hidradenitis Suppurativa Pathogenesis
( Multidisciplinary Digital Publishing Institute (MDPI) , 2024 , Article Review)Hidradenitis suppurativa (HS) is a chronic autoinflammatory skin disorder, which typically occurs during puberty or early adulthood. The pathogenesis of HS is complex and multifactorial; a close interaction between hormonal, ... -
Optimization of the Consolidation Parameters for Enhanced Thermoelectric Properties of Gr-Bi2Te2.55Se0.45 Nanocomposites
( Multidisciplinary Digital Publishing Institute (MDPI) , 2024 , Article)Hot pressing represents a promising consolidation technique for ball-milled bismuth telluride alloys, yet deep investigations are needed to understand its effect on the thermoelectric properties. This paper studies the ... -
A novel low-density, high-hardness, high-entropy alloy with close-packed single-phase nanocrystalline structures
( Taylor and Francis Ltd. , 2014 , Article)A low-density, nanocrystalline high-entropy alloy, Al20Li20Mg10Sc20Ti30 was produced by mechanical alloying. It formed a single-phase fcc structure during ball milling and transformed to single-phase hcp upon annealing. ... -
The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocomposites
( Taylor and Francis Ltd. , 2024 , Article)In this study, the synthesis-structure-property relationship of graphene-reinforced Al matrix nanocomposites was investigated. The Al-Li-GNPs nanocomposite was synthesized to attain both high strength and good ductility. ... -
Graphene-Reinforced Bulk Metal Matrix Composites: Synthesis, Microstructure, and Properties
( Walter de Gruyter GmbH , 2020 , Article Review)This paper provides a critical review on the current status of graphene-reinforced metal matrix composites (GRMMCs) in an effort to guide future work on this topic. Metal matrix composites are preferred over other types ... -
Enhancement of Thermoelectric Properties of Layered Chalcogenide Materials
( Walter de Gruyter GmbH , 2020 , Article Review)Thermoelectric materials have long been proven to be effective in converting heat energy into electricity and vice versa. Since semiconductors have been used in the thermoelectric field, much work has been done to improve ... -
Thermoelectric behavior of Bi2Te2.55Se0.45 with a tunable seebeck coefficient: A comparison between coarse needle-like structure and bulk nanostructured alloys
( Elsevier , 2023 , Article)In this study, we compare the thermoelectric properties of coarse-grained n-type Bi2Te2.55Se0.45 alloy prepared by induction melting with the bulk-nanostructured prepared by ball milling and hot-pressing techniques. The ... -
Investigating the thermal stability of nanocrystalline aluminum-lithium alloy by combining different mechanisms: Reinforcing with graphene and alloying with Sr
( Elsevier , 2022 , Article)Interest in nanocrystalline (nc) aluminum-lithium (Al-Li) alloys is motivated by the demand for lightweight and high-performance materials for light-weighting applications and superior fuel consumption. Nonetheless, nc ... -
Structural evolution of Cu(1-X)YX alloys prepared by mechanical alloying: Their thermal stability and mechanical properties
( Elsevier , 2015 , Article)In the present study, an attempt has been made to synthesize copper based disordered solid solutions by mechanical alloying (MA) of non-equilibrium compositions. The blended compositions of Cu–1% Y, Cu–3% Y, Cu–5% Y and ... -
Artifact-free bulk nanocrystalline Al-Li alloys with multiple deformation mechanisms and improved tensile properties
( Elsevier , 2020 , Article)An artifact-free bulk nanocrystalline (NC) aluminum (Al)-2% lithium (Li) alloy was synthesized in this study using in-situ consolidation via a combination of cryogenic and room temperature milling. The mechanical behavior ... -
Microstructural effect on the corrosion behavior of n- and p-type bismuth tellurides fabricated by induction melting
( Elsevier , 2023 , Article)Numerous efforts have been made to understand and enhance the thermoelectric properties of bismuth telluride alloys. However, limited studies have been reported to investigate the corrosion behavior of these alloys and ... -
The activation of deformation mechanisms for improved tensile properties in nanocrystalline aluminum
( Elsevier , 2020 , Article)We report tensile properties and TEM observations of in situ consolidated bulk nanocrystalline Al with an average grain size of 29 nm. The nanocrystalline Al is synthesized using a combination of cryogenic and room temperature ...
