A new sensor-less voltage and frequency control of stand-alone DFIG based dead-beat direct-rotor flux control-experimental validation.

The paper presents a new sensor-less voltage and frequency control method for a stand-alone doubly-fed induction generator (DFIG) feeding an isolated load. The proposed control approach directly regulates the magnitude and angle of the rotor-flux vector rather than controlling rotor currents or voltages as in classic field oriented control (FOC). To accurately regulate the magnitude and frequency of stator voltage, two separate closed-loop based PI regulators are employed to evaluate the reference signals of the rotor flux vector magnitude and angle, respectively.

Real-world clinical outcome of unresectable locally advanced & de-novo metastatic pancreatic ductal adenocarcinoma: a multicentre retrospective study.

Background: Pancreatic ductal adenocarcinoma (PDAC) remains one of the most lethal malignancies, with limited treatment options yielding poor outcomes. This study aimed to evaluate the real-world clinical characteristics, treatment patterns, and outcomes of patients with locally advanced unresectable and de-novo metastatic PDAC in Saudi Arabia, providing regional data to compare with international benchmarks.

Methods: This is a retrospective, multicentre study involving 350 patients diagnosed with unresectable locally advanced or de-novo metastatic PDAC between January 2015 and November 2023.

Histological and radiographic assessment of the regenerative potential of sodium hexametaphosphate (SHMP) as a novel direct pulp capping material in an animal model.

Background: This study aimed to assess the histological and radiographic effects of sodium hexametaphosphate (SHMP) as a direct pulp capping (DPC) agent in immature permanent dog premolars.

Methods: A split-mouth design was employed with three healthy 4-month-old Mongrel dogs, each having 36 premolars. The premolars were randomly assigned to either SHMP or MTA.

Biosynthesis and health promoting traits of green synthesized cobalt oxide nanoparticles.

Nanomedical applications have increased significantly. This work aimed to fabricate and characterize cobalt oxide nanoparticles (CoOnps) synthesized biologically via aqueous Alhagi maurorum extract and evaluate their cytotoxic and antimicrobial impacts. Green-synthesized CoOnps were prepared and analyzed using UV-Vis spectrophotometer UV-vis, Scanning electron microscopy (SEM), Transmission electron microscopy TEM, Energy dispersive X-ray analysis EDAX, Fourier transform infrared, FTIR, and X-ray diffraction (XRD).

Success History Adaptive Competitive Swarm Optimizer with Linear Population Reduction: Performance benchmarking and application in eye disease detection.

Eye disease detection has achieved significant advancements thanks to artificial intelligence (AI) techniques. However, the construction of high-accuracy predictive models still faces challenges, and one reason is the deficiency of the optimizer. This paper presents an efficient optimizer named Success History Adaptive Competitive Swarm Optimizer with Linear Population Reduction (L-SHACSO).

Discriminative features of immunoglobulin G4-related disease (IgG4-RD) and associated autoimmune rheumatic diseases (ARDs) in a nationwide observational cohort: study from the Egyptian College of Rheumatology.

Objective: The objective of this study is to present the clinical characteristics of immunoglobulin G4-related diseases (IgG4-RD) patients and describe associated overlap with autoimmune rheumatic diseases (ARDs).

Patients And Methods: This cross-sectional study included 81 patients with IgG4-RD who were recruited from 13 specialized rheumatology departments and centers across the country in collaboration with the Egyptian College of Rheumatology (ECR). Patients underwent a thorough history-taking and clinical examination.

Global, regional, and national burden of primary liver cancer attributable to metabolic risks: an analysis of the Global Burden of Disease Study 1990-2021.

Background: The global burden of metabolic diseases is increasing, but estimates of their impact on primary liver cancer are uncertain. We aimed to assess the global burden of primary liver cancer attributable to metabolic risk factors, including high body mass index (BMI) and high fasting plasma glucose (FPG) levels, between 1990 and 2021.

Methods: The total number and age-standardized rates of deaths and disability-adjusted life years (DALYs) from primary liver cancer attributable to each metabolic risk factor were extracted from the Global Burden of Disease Study 1990-2021.

Bacillus subtilis-derived-exopolysaccharide halts depigmentation and autoimmunity in vitiligo.

Vitiligo has a complex multifactorial etiology involving a T-cell mediated autoimmune response to cutaneous melanocytes. Microbial dysbiosis has been assigned a contributing role in vitiligo etiology. Treating vitiligo can be a challenging task and finding novel treatment approaches is crucial.

New Classification System for Proximal Fifth Metatarsal Fractures: Intraobserver and Interobserver Reliability Assessment.

Background: The most commonly used classification for proximal fifth metatarsal fractures has not shown good reproducibility. The aim of this study was to evaluate the intraobserver and interobserver agreement of a new classification system for such fractures.

Methods: The study involved the development of a novel classification system that categorized these fractures into 2 main types and 2 subtypes.

Examining nursing students' awareness of various medical errors during clinical internships to enhance patient safety: A multi-center cross-sectional study.

Background: Patient safety is a global concern within health facilities, primarily attributed to medical errors, constituting a significant global public health issue. Patients experiencing medication errors face serious problems, with increasing mortality rates and escalating hospital costs.

Aim: The study aims to examine nursing students' awareness of various medical errors during their clinical internships at Al- Ahsa, identifying types of errors to enhance patient safety.

Predictors of renal outcomes and mortality in patients with renal vein thrombosis: a retrospective multicenter study.

Background: Studies on renal vein thrombosis have been conducted as case reports or case series. The renal outcomes and mortality risk of renal vein thrombosis have not been fully established. We aimed to investigate the clinical characteristics, treatment modalities, and predictors of renal outcomes and mortality in patients with renal vein thrombosis in a large multicenter cohort.

Expression of Monocytes Subsets in Patients Diagnosed With Coronary Artery Atherosclerosis and Their Impact on Disease Severity.

Introduction Many studies have supported inflammation as a mediator of lipoprotein (a) (Lp(a)) induced increase in cardiovascular disease risk, as it has pro-inflammatory effects on endothelial cells and monocytes. Aim This study aims to correlate Lp(a) level with different monocyte subsets in coronary atherosclerotic patients with different severity. Method The study included 60 patients with a mean age of 53.

Unveiling the mechanical performance of partially replaced coronal restorations in root canal-treated teeth: an in-vitro study.

Objectives: To compare the mechanical performance of partially replaced (repaired) intra-coronal restorations to totally replaced ones in root canal-treated teeth.

Methods: Thirty maxillary second premolars were selected according to strict criteria, mounted on moulds, and had mesio-occluso-distal (MOD) cavities prepared. Resin composite restorative material was used to perform the initial restoration, followed by aging procedures using thermo-mechanical cycling fatigue to replicate six months of intraoral aging.

Deep regression analysis for enhanced thermal control in photovoltaic energy systems.

Efficient cooling systems are critical for maximizing the electrical efficiency of Photovoltaic (PV) solar panels. However, conventional temperature probes often fail to capture the spatial variability in thermal patterns across panels, impeding accurate assessment of cooling system performance. Existing methods for quantifying cooling efficiency lack precision, hindering the optimization of PV system maintenance and renewable energy output.

Comparing distal and proximal radial access for percutaneous coronary intervention and angiography: a comprehensive meta-analysis and systematic review of randomized controlled trials.

Background: Distal radial access (DRA) through the anatomical snuff-box is a novel technique for coronary procedures. Emerging evidence suggests that DRA is associated with a lower risk of certain complications compared to proximal radial access (PRA).

Methods: A systematic review was conducted to compare clinical and procedural outcomes between both access sites for coronary angiography and percutaneous coronary intervention.

Efficacy and safety of different hyaluronic acid fillers on cheek volume augmentation: systematic review and network meta-analysis.

Background: Various rejuvenation surgeries, including hyaluronic acid (HA) fillers, aim to address mid-face volume loss. However, literature on the comparative efficacy and safety of different HA fillers for the zygomatic area remains limited.

Methods: This systematic review and network meta-analysis (NMA), adhering to NMA PRISMA 2020 and Cochrane guidelines.

Neuroprotective effect of red dragon fruit extract ameliorates oxidative stress and inflammation in D-galactose-induced aging rat model: biochemical, histological and immunohistochemical study.

Aging is a worldwide socioeconomic burden. Cerebellar aging is an enigma contributing to many behavioral aging disorders, hence is its hindering by prophylactic measurements is a crucial geriatric research target. Red dragon fruit (RDF) is a tropical fruit with antioxidant, anti-inflammatory and anti-apoptotic properties.

Assessing caregiver stress and resource needs in pediatric cancer care.

Background: Caregivers of pediatric cancer patients often face significant stress and emotional strain, which can negatively impact their well-being and the quality of care provided to their children. Understanding the socio-demographic factors influencing caregiver stress and identifying the specific needs and resources required by caregivers are crucial for improving support systems in pediatric cancer care.

Aim Of The Study: This study aimed to analyze the levels of caregiver stress and their resource needs within pediatric cancer care.

Sustainable, Green, and Sensitive Spectrofluorimetric Approach for Pizotifen Maleate Detection in Tablets and Human Plasma via Photo-Induced Electron Transfer Inhibition.

Pizotifen maleate (PZM) is an anti-migraine drug. Effective treatment requires accurate measurement of PZM levels in patients and constant medication concentrations in tablets. This paper presents a new spectrofluorimetric approach for detecting PZM in tablets and human blood plasma (spiked with PZM).

Immediate and delayed micro shear bond strength evaluation of two glass ionomer cements to composite resin by using different bonding techniques-an in vitro study.

Objective: Evaluating immediate and delayed micro shear bond strength (µSBS) between composite resin and glass ionomer cements using different adhesive systems and mechanical surface treatment.

Materials And Methods: A total of 240 specimens of glass ionomer restorative materials were divided into two groups: Resin Modified Glass Ionomer Cement (RMGIC) namely Riva Light Cure and Conventional Glass Ionomer Cement (CGIC) namely Riva Self Cure. These were subdivided into immediate (24 h) and delayed (3 months) storage and further divided into smooth, medium, and rough surface treatment with either total etch (TE) or self-etch (SE) adhesive strategies.