Mohammed Alotaibi

• Professor at King Khalid University

Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that plays multiple roles in the human body. It was first discovered by a Hungarian biochemist Albert Szent-Györgyi in 1932. This vitamin is essential for various biological processes, including maintaining homeostasis. The skin normally has high levels of vitamin C, but its concent...

Spinal cord injury is the most disabling condition that affects ones life. 12,500 new cases of SCI are recorded each year in North America, according to the National Spinal Cord Injury Statistical Centre. Depending upon the level of injury, quadriplegia or paraplegia is caused by SCI. Due to a lesion in the dorsal spine, Paraplegia is caused, while...

Spinal cord injury (SCI), is a life changing threatening neurological condition that completely changes patients' life. It has been shown that early treatment soon after the injury may improve neurological recovery. To date, no therapeutic modalities exist that have shown very positive effect on neurological outcomes. However, recent clinical and p...

Enhanced oil recovery (EOR) from carbonates is obtained by injection of controlled ionic strength brines containing “active ions” (e.g., SO4²⁻, Mg²⁺, Ca²⁺). It is generally believed that this occurs through the interaction of the active ions at the carbonate-brine interface (e.g., within a thin brine layer separating the petroleum and the carbonate...

Spinal cord injury (SCI) is extremely debilitating disorder. The increasing incidences and persisting poor prognosis in neurological recovery and QoL (SCIM) have severely exposed the limitations of all known management strategies. Recently simple measures like nutritional supplementation in SCI cases have shown promising results. Efforts in augment...

Cervical joint position sense (JPS) and postural stability are vital to maintaining balance and preventing falls in fibromyalgia syndrome (FMS). Impaired cervical JPS may influence postural stability, and understanding the relationship between them can aid in formulating treatment strategies in individuals with FMS. This study aims to (1) assess ce...

Purpose People use computers in offices and workplaces daily to perform different activities. Impaired cervical proprioception and forward head posture (FHP) may contribute to the development and maintenance of neck pain in computer users. The aims of this study are 1) to compare cervical joint position sense (JPS) in computer users with neck pain,...

It's on potential health benefits of omega 3 fatty acid.

:Omega 3 fatty acid are long chain polyunsaturated fatty acid found mostly in marine & Plant sources eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are the classes of omega 3 fatty acid that are mostly derived from marine sources, whereas another class of omega 3 fatty acid i. e. Linolenic acid is mostly found in plant sources. Consu...

Long-term use of Glucocorticoids produces skeletal muscle atrophy and microvascular rarefaction. Hydrogen sulfide (H2S) has a potential role in skeletal muscle regeneration. However, the mechanisms still need to be elucidated. This is the first study to explore the effect of Sodium hydrosulfide (NaHS) H2S donor, against Dexamethasone (Dex)-induced...

Controlled-ionic-composition waterflooding improves oil displacement efficiency in heterogeneous carbonate rocks. Recent microscale experimental studies confirm that the injection of brines containing high sulfate ion concentrations alters the wettability of the pore surfaces and improves oil mobilization at elevated temperature. However, the dynam...

Sickle cell disease is a well-known disease with evolving changes in medical as well as surgical management. Recent developments in medical management and the well-adjusted screening protocols for the disease complications toward its anticipation and prevention and all these recent changes have led to more work toward understanding and managing dis...

Many challenges and limitations are experienced while treating the produced water in oil fields, due to large volumes of water produced together with oil. In this paper, we propose a new method to treat produced water, by integrating humidification and de-humidification desalination (HDH) unit with waste heat, extracted from abandoned oil and gas w...

Controlled-ionic-composition waterflooding is an economic and effective method to improve oil recovery in carbonate oil reservoirs. Recent studies show controlling the salinity and ionic composition of injection water can alter the wettability of carbonate mineral surfaces. The pore-scale oil connectivity and displacement by controlled-ionic-compos...

Objectives: To evaluate the level of public awareness regarding cervical spine injuries among adult residents of the Kingdom of Saudi Arabia (KSA). Methods: This descriptive cross-sectional study was carried out between June and November 2020. It involved structured questionnaires, collecting information on participant socio-demographic characte...

Background Femoral head avascular necrosis leads to osteoarthritis of the hip joint and affects its functional capacity in sickle cell disease patients. The functional outcomes of total hip replacement (THR) on patients with congruous joints who underwent hip replacement after having a failed joint preservation surgery are unknown. This study aimed...

Chemical additives have often been added to injection water for enhanced oil recovery (EOR) from geologic formations in the oil industry. The oil clusters in porous mediums commonly remain in the microsized capillary elements such as pores and throats due to high capillary pressures or negative capillary pressures, which is a function of pore topol...

Objectives: To determine the anthropometric features of Saudi knees compared with knees of other ethnicities and reveal mismatches among different knee implant systems. Methods: All knee computed tomography images obtained between January 2016 and September 2016 for varying medical reasons in a tertiary care hospital in Southwestern Saudi Arabia...

Smart waterflooding is an economic and effective method to improve oil recovery in carbonate oil reservoirs. Recent studies show controlling the salinity and ionic composition of injection water can alter the wettability of carbonate mineral surfaces. The pore-scale oil displacement by smart waterflooding in heterogeneous carbonate reservoirs, espe...

SmartWater and alkali/surfactant assisted chemical flooding processes are gaining some attention for enhanced oil recovery in carbonate reservoirs. The wettability alteration toward water-wet conditions caused by electro-kinetic induced favorable surface charge alteration is one main mechanism responsible for oil recovery in these methods. In this...

Background: Screening approved medications to identify therapeutics for drug repurposing is an effective tactic, and a deep research into off label drug use (OLDU) is required. Unfortunately, OLDU has not been extensively studied in Middle East. Our study aimed to evaluate the extent of OLDU in Saudi Arabia. Methods: Retrospective study carried out...

In this paper we consider the problem of estimating the multicomponent stress-strength (MSS) reliability under progressive Type II censoring when the stress and strength variables follow unit Gompertz distribution with common scale parameter. We estimate MSS reliability by using frequentist and Bayesian approaches. The Bayes estimates have been obt...

Eight pyrazole-1-carbothioamide nucleosides were synthesized through conensation of 3-(4-aminophenyl)-pyrazole-1-carbothioamide derivative 2 with four aldoses (arabinose, mannose, glucose and galactose) and acetylation of the produced nucleosides 3a-d with acetic anhydride in pyridine at room temperature to give their corresponding acetyl derivativ...

SmartWater flooding through the injection of optimized chemistry water has lately become an attractive proposition for enhanced oil recovery in carbonate reservoirs. The wettability alteration towards water-wet conditions caused by favorable surface charge alteration is identified as the main mechanism responsible for oil recovery. In this experime...

Normal repeated uterine contractions are associated with uterine hypoxic stresses and uterine transplantation and severe bleeding during hysterectomy may lead to hypoxia and irreversible cellular damage. This study investigated the effects of short repeated hypoxic episodes on the structure and function of uterine tissues following sustained prolon...

The mechanistic target of rapamycin (mTOR) is an evolutionarily conserved protein kinase that regulates growth and metabolism. mTOR is found in two protein complexes, mTORC1 and mTORC2, that have distinct components and substrates and are both inhibited by rapamycin, a macrolide drug that robustly extends lifespan in multiple species including worm...

New Insights to Characterize Fluid/Carbonate Rock Interfaces Using Transmission Electron Microscopy with Liquid Cell Holder - Volume 25 Supplement - Dongkyu Cha, Mohammed Alotaibi, Sultan Enezi, Ali Yousef, Kepeng Song, Xinghua Li, Yu Han

Introduction: There is limited evidence of studying the associated factors of acute kidney injury (AKI) among patients with influenza A (H1N1) virus infection pandemic in 2009. AKI is one of the most prevalent complications in the intensive care unit. Its incidence is associated with high mortality and negative impacts on long-term survival. The a...

Background: There is a high prevalence of dyslipidemia in the Arabian Gulf. There is a gradual increase in Total Cholesterol Concentration (TCC) with age, reaching a maximum at the 50s and 60s for male subjects. Our study aims to assess hypercholesterolemia level awareness among Saudi People. Methods: cross-sectional. Study sample size was 150. Our...

Background: Screening approved medications to identify therapeutics for drug repurposing is an effective tactic, and a deep research into off label drug use (OLDU) is required. Unfortunately, OLDU has not been extensively studied in Middle East. Our study aimed to evaluate the extent of OLDU in Saudi Arabia.Methods: Retrospective study carried out...

BACKGROUND In the past, dental patient satisfaction has been measured by the dentist's technical competence and mechanical precision2. Patient's opinion played no part in this method of measuring quality. Consequently, consideration of patient's satisfaction became an integral part of providing dental services3. Some patients want a dentist who lis...

Introduction: E-health is relatively a recent term and can be shuffled with health informatics. It engulfs all forms of digital and electronic processes found in healthcare provided via information and communication technology (ICT) channels. This study is an attempt to find out the level of utilization and effectiveness of e-health in Saudi Arabia...

Introduction L’EEG est utilisé dans la prise en charge des épilepsies. Lors de bilan de malaises, des anomalies EEGs peuvent être interprétées à tort comme des configurations signant la nature épileptique des malaises. Observation Il s’agit d’une patiente de 48 ans sans antécédent particulier. Elle présente depuis l’adolescence des épisodes d’une...

Introduction Le fingolimod FTY est utilisés pour le traitement de la sclérose en plaques récurrente-rémittente SEP-RR. Dans la plupart des pays européens, le fingolimod est utilisés habituellement comme un traitement de deuxième ligne. Objectifs Évaluer l’efficacité du FTY en utilisant des paramètres cliniques et radiologiques, chez les patients S...

2D ray-tracing has been used to investigate the influence of inclined cutting front and the cutting edge on the exiting, surplus, laser beam while cutting 6 mm mild steel with a fibre laser, wavelength = 1070 nm. The ray-tracing model, which assumed a Gaussian beam, has investigated the distribution of this surplus beam as a function of kerf wall i...

p>The conflict of interest amongst the professionals like client and contractor project managers, site engineers, quantity surveyors and designers/architects play crucial roles for the unethical practices and consequently these practices have adverse impact on the product quality, faith of clients and investors’ confidence in the construction indus...

Introduction: E-health is relatively a recent term and can be shuffled with health informatics. It engulfs all forms of digital and electronic processes found in healthcare provided via information and communication technology (ICT) channels. This study is an attempt to find out the level of utilization and effectiveness of e-health in Saudi Arabia...

Rosa arabica is a threatened species of the family Rosaceae, endemic to Mount Catherine region in the South Sinai, Egypt. The aim of this study was to evaluate the status of the R. arabica populations after a conservation program that has been started eighteen years ago. Fencing of the target species was applied in three main locations in Saint Kat...

This work reports the design and opto-mechanical characterization of high velocity comb-drive actuators producing in-plane motion and fabricated using the technology of deep reactive ion etching (DRIE) of silicon-on-insulator (SOI) substrate. The actuators drive vertical mirrors acting on optical beams propagating in-plane with respect to the subst...

Background: The mechanisms underlying the initiation of premature uterine contractions during pregnancy are not fully understood. It is now widely accepted that proinflammatory cytokines are key mediators of the inflammatory signaling pathways in term or preterm labor. However, the exact triggers for inflammationinduced labor remain to be identifie...

Significance Parturition requires strong uterine contractions. A longstanding enigma has been how contractions strengthen despite also causing transient ischemia as they occlude uterine blood vessels. Here we demonstrate a hitherto undescribed mechanism whereby in an adaptation at labor, brief hypoxia in uterine muscle, stimulates the contractile a...

Introduction: Few studies have addressed the prevalence and incidence of visceral transposition, but one that has is a Sri Lankan study, which found that the incidence of visceral transposition in chest clinics is 1 in 3567. Objectives: To investigate the prevalence of visceral transposition (situs inversus, dextrocardia and heterotaxy) in the Nati...

Objective: The patients' understanding of treatment plan and patient education in general are very important factors in compliance especially in those patients with a chronic illness. There are no existing studies understanding the treatment plan and compliance in Saudi Arabia. Therefore the present study was to examine the relationship between pat...

An overview on the future challenges that the oil and gas production is facing in regards to the continuous increase of the produced water (effluent water), the volume of effluent water associated with crude oil production has been increasing due to the maturing of the oil fields, field developments forecasts can be used in order to estimate this i...

Primary hyperoxaluria type 1 (PH1) is characterized by progressive renal insufficiency culminating in end-stage renal disease, and a wide range of clinical features related to systemic oxalosis in different organs. It is caused by autosomal recessive deficiency of alanine:glyoxylate aminotransferase due to a defect in AGXT gene. Two brothers (one 6...

In traditional nonparametric EB (empirical Bayes) setting, the paper proposes gener-alization of the linear EB estimation method which takes advantage of the flexibility of the wavelet techniques. A nonparametric EB estimator is represented as a wavelet series expansion and the coefficients are estimated by minimizing the prior risk of the estimato...