Jazan University

Uniqueness and CB-Spline Approach for Identifying the Time-Varying Coefficient of a Second-Order Hyperbolic PDE with Non-Classical Boundary Condition

This work is concerned with an inverse problem for the second-order hyperbolic PDE, in which extra data are imposed. The time-varying coefficient is not known a priori. We begin by introducing the notion of a classical solution for the problem at hand. The primary aim is to recov...

Novice nurses’ preparedness for psychological first aid in conflict-affected Middle Eastern Countries: a cross-sectional survey

Frontline healthcare professionals, especially nurses, are often the main providers of psychological first aid in conflict settings, offering supportive communication, grief support, and trauma-informed care. However, despite its recognized importance in emergency response, PFA c...

Shear bond strength of ceramic orthodontic brackets to bulk-fill, packable, and flowable composite restorations under different thermal aging protocol of the substrate: an in vitro study

Long term success of orthodontic treatment depends on the bond strength of orthodontic brackets with tooth and/or restorative materials. This in vitro investigation aimed to assess and compare the shear bond strength (SBS) of ceramic orthodontic brackets bonded to bulk-fill, pack...

Eco-friendly dentistry in clinical practice: awareness, implementation and factors associated with sustainable dental care

Environmental sustainability is increasingly recognised as part of oral healthcare and dental education, but evidence from low-resource and conflict-affected settings remains limited. This study assessed the awareness and implementation of eco-friendly dentistry amongst dental pr...

The intellectual structure and thematic evolution of skin cancer research in the Middle East

Background: Skin cancer research in the Middle East has grown substantially over recent decades, yet its intellectual and collaborative landscape remains underexplored. This study aimed to map the evolution, thematic structure, and collaboration patterns of regional skin cancer r...

MorphCloud-LLM: Elastic Spot-Instance-Aware LLM Serving with Transparent Preemption Recovery and Speculative Decoding Continuity

Serving large language models (LLMs) on cloud spot and preemptible instances reduces costs by 60 to 90 percent compared to on-demand pricing, but unpredictable instance preemptions cause request failures, KV-cache state loss, and degraded user experience. We present MorphCloud-LL...

Dimensions of discomfort: Exploring smartphone dimensions and its impact on upper extremity musculoskeletal health

BackgroundSmartphones have become essential tools in modern daily life, with usage intensifying in the post-pandemic era. Prolonged and addictive smartphone use has been increasingly associated with Musculoskeletal disorders (MSD) in the upper extremity. Beyond usage duration, de...

Optimization of FDM process parameters for ABS components: Effects on printing time, part weight, and vibrational loss factor using Integrated TOPSIS-CoCoSo and decision tree approaches

Fused Deposition Modeling (FDM) has been widely studied for the manufacture of light-weight polymer components. However, the process parameter selection significantly effects the production efficiency, material consumption and vibration damping performance. In the present study,...

Heat transfer and entropy analysis of shaped nanoparticles in stratified binary nanofluid flow over an exponentially curved Riga surface

The problem of controlling heat transmission and flow efficiency in advanced engineering systems, such as aerospace thermal management and next-generation cooling devices, is critically hampered by energy losses due to friction and thermal irreversibility. This study addresses th...

Correlation of maxillary anterior tooth width with facial dimensions in a Yemeni subpopulation: a cross-sectional study

In restorative and prosthetic dentistry, an aesthetic smile is strongly dependent on the harmonious interaction between maxillary anterior teeth and facial proportions. Although similar associations have been studied in various populations, data from Yemeni adults remain limited....

Nonlinear primary resonance and dynamic stability in parametrically excited self-sustaining curved SWCNTs subjected to a thermal and magnetic loads

Abstract This research conducts a systematic examination of the nonlinear dynamic behaviour exhibited by curved single-walled carbon nanotubes (CSWCNTs) under parametric excitation while embedded in a nonlinear viscoelastic medium. The investigation employs nonlocal Euler–Bernoul...

Hesperetin-Loaded PLGA Nanoparticles Ameliorate Cisplatin-Induced Oxidative Stress and Testicular Dysfunction in Rats: Association with NRF2/HO-1, NF-κB, and ACSL4/GPX4/SLC7A11 Signaling Modulation

Background: Cisplatin is a widely used chemotherapeutic agent whose gonadotoxic effects, largely driven by oxidative stress and inflammation, pose a major threat to male reproductive health. This study evaluated whether hesperetin (HES) and hesperetin-loaded poly (lactic-co-glyco...

Evaluation of relative safety and therapeutic efficacy of antihyperlipidemic drug regimens used alone or in combination in cardiovascular disease: randomized controlled study

Abstract Background Statin monotherapy is a cornerstone of lipid-lowering therapy for reducing low-density lipoprotein cholesterol (LDL-C) and cardiovascular risk in patients with dyslipidemia. However, many patients at moderate-to-high cardiovascular risk fail to achieve recomme...

Sustainable PEG ‐Based Shape‐Stabilized Phase Change Materials Using Raw Pine Cone as a Low‐Cost Filler and Graphite for Enhanced Thermal Conductivity

ABSTRACT This study investigates the development of a novel shape‐stabilized phase change material (ssPCM). Pinecone (PC) powder, a low‐cost and sustainable lignocellulosic support, was combined with polyethylene glycol (PEG 6000) as the phase change material (PCM). Graphite was...

Marginal gap evaluation of zirconia and metal short crowns with varying total occlusal convergence and auxiliary preparation features: an in-vitro study

Marginal adaptation is one of the important factors in determining the long-term success of dental restorations. Despite extensive research, conflicting evidence exists regarding the influence of material type, total occlusal convergence (TOC), and auxiliary preparation features...

Oxidative Stress-Associated Apoptotic Responses Induced by Lantana camara L. Flower–Derived Zinc Oxide Nanoparticles in Human Non-Small Cell Lung Cancer (NCI-H460) Cells

Lung cancer remains a leading cause of cancer-related mortality worldwide, underscoring the need for safer and more effective therapeutic strategies. In this study, zinc oxide nanoparticles (ZnO NPs) were synthesized via a green, biogenic approach using Lantana camara L. flower a...

Skeletal malocclusion and surgical-level skeletal discrepancies: a retrospective cephalometric study using Steiner and McNamara analyses

To assess skeletal malocclusion patterns and surgical-level skeletal discrepancies using Steiner and McNamara cephalometric analyses. This retrospective cross-sectional radiographic study was conducted at the Faculty of Dentistry, Sana’a University, and included 353 randomly sele...

Spatially-integrated Ancestry Polygenic Risk Mapping for Diabetes: A Geographic-adjusted Genetic Scoring Framework

Abstract Background: Conventional polygenic risk scores (PRSs) often fail to capture geographic and ancestry-specific variation, limiting their predictive accuracy in admixed and globally diverse populations. This study aims to develop a spatially-aware PRS (SA-PRS) framework tha...

A novel optimization of API release using hybrid models

Abstract Polysaccharide-based drug delivery systems have to be closely watched in terms of drug release in the body over time if they want to be able to achieve maximum therapeutic effectiveness and maintain controlled bioavailability. The work presents a data-driven framework th...

Influence of total occlusal convergence and auxiliary retentive features on regional marginal discrepancy in milled and 3D-printed short provisional crowns—an in-vitro study

This in-vitro study evaluated the influence of total occlusal convergence (TOC) (10°/20°) and auxiliary retentive features (ARF) (groove, proximal box) on regional marginal discrepancy in milled (CopraTemp PMMA) and 3D-printed (Asiga Dentatooth) short (3 mm) provisional crowns (P...