The effect of Hydrogen Peroxide treatments on dental enamel porosity and protein structure and its long-term implications on tooth hardness and optical properties حسب Ovidiu, Ciobanu

"…ObjectiveThe aim of this study is to investigate how hydrogen peroxide (HP) treatments affect enamel porosity and protein structure, as well as their impact on tooth shade and hardness over time. MethodsFifty healthy teeth were collected from adult patients. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

The Triple “S” Impact of COVID-19: Nationwide Evidence of the Impact of the Stress Associated With Restrictive Measures on Substance Use, Sleep, and Social Connectedness in Qatar... حسب Muna Abed Alah (18171346)

"…Of tobacco users in our sample, 36% reported increased tobacco use since the start of home confinement, while 41.6% of alcohol users reported decreased alcohol use. Concerning sleep, 46.1% reported an increase in average sleep duration per day (0.77 h mean increase, 95% CI: 0.66-0.88, P<0.001), and a third of participants reported poorer sleep quality. …"

Synergetic effects of dodecylamine-functionalized graphene oxide nanoparticles on antifouling and antibacterial properties of polysulfone ultrafiltration membranes حسب Abedalkader Alkhouzaam (15842647)

"…All membranes were characterized in terms of chemical structure, morphology, hydrophilicity, porosity and mean pore size. Cross-section SEM images showed the distribution of GO and rGO-DDA between the pores and on the polymer walls. …"

Evaluating the impact of the Minimization of Aggression and Violence (MoAV) intervention on mechanical restraint use in Qatar's acute mental health setting حسب Ananth Nazarene (21239912)

"…The percentage of restrained patients decreased from 25 % to 4 %, p = (<0.001). The mean duration of restraint incidents slightly increased from 59.1 min in 2016 to 61.3 min in 2021, though this change was not statistically significant. …"

Influence of co-current vapor flow on falling film over horizontal tube حسب Furqan Tahir (14429547)

"…First, the liquid load is varied between 0.02 and 0.05 kg/(m·s), and its effects on the film thickness and the wetting time are calculated, presented and discussed. Afterwards, the impact of co-current vapor flow on film distribution, wetting time, minimum thickness and its location are quantified and examined by increasing the vapor velocity up to 6 m/s with 2 m/s intervals. …"

Mixed siliciclastic-carbonate-evaporite sedimentation in an arid eolian landscape: The Khor Al Adaid tide-dominated coastal embayment, Qatar حسب John M., Rivers

"…The overall landward increase in salinity is accompanied by a decrease in the diversity of benthic fauna and their skeletal remains. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Brain microstructural changes support cognitive deficits in HIV uninfected children born to HIV infected mothers حسب Yadav, Santosh K.

"…Decreased FA along with both increased and decreased MD in different brain regions was present in HUC compared to CHNM. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

The effect of Hydrogen Peroxide treatments on dental enamel porosity and protein structure and its long-term implications on tooth hardness and optical properties حسب Jelena Eric (21015107)

"…<h3>Objective</h3><p dir="ltr">The aim of this study is to investigate how hydrogen peroxide (HP) treatments affect enamel porosity and protein structure, as well as their impact on tooth shade and hardness over time. </p><h3>Methods</h3><p dir="ltr">Fifty healthy teeth were collected from adult patients. …"

Football-induced fatigue in hypoxia impairs repeated sprint ability and perceptual-cognitive skills حسب Samuel A. Pullinger (8154627)

"…</p><h3>Methods</h3><p dir="ltr">Ten semi-professional footballers underwent a control session (0-m) to quantify RS in a non-fatigued state; and three hypoxia sessions (0-m;1500-m;3000-m) examining RS and perceptual-cognitive skills for a given physical workload. The mean number of correct responses (%) for anticipation and decision-making accuracy were obtained at the 30-min mark of each half. …"

Identification of groundwater potential recharge zones in a Tunisian anthropogenic coastal region: Insights from multi-criteria decision-making techniques حسب Fatma Ezzahra Slimani (19239559)

"…This is the case for the Chiba coastal region (northeast of Tunisia) where excessive extraction of GW has led to decreasing GW levels and an acceleration of seawater intrusion. …"

Peripheral inflammatory and metabolic markers as potential biomarkers in treatment-resistant schizophrenia: Insights from a Qatari Cohort حسب Mohamed Adil Shah Khoodoruth (14589828)

"…Multivariate analysis highlighted significant differences in platelet count, mean platelet volume (MPV), TG, HbA1c, BMI, neutrophil/lymphocyte ratio (NLR), monocyte/lymphocyte ratio (MLR), and ferritin among the groups. …"

Numerical investigation of MIL-101(Cr)/GrO composite performance in adsorption cooling systems حسب Eman Elsayed (19720093)

"…The 5%GrO_phys composite showed a decreased SCP and an increased COP at the same cycle time. …"

Vitamin D association with coagulation factors in polycystic ovary syndrome is dependent upon body mass index حسب Abu Saleh Md Moin (6189512)

"…In addition, coagulation variables such as thrombin-activatable fibrinolysis inhibitor, plasminogen activator inhibitor-1 (PAI-1), D-dimer, Antithrombin and thrombomodulin have been reported to be elevated in PCOS compared to control subjects, and the functional coagulation tests including prothrombin time, thrombin time and fibrin degradation products may be predictive of PCOS. …"

Outcomes of POCUS‐Guided Peripheral Intravenous Access in Difficult Venous Access Patients: A Systematic Review and Meta‐Analysis حسب Hany A. Zaki (17337673)

"…A systematic review of 15 studies with 1485 patients, sourced from five databases, including PubMed, Cochrane Library, MEDLINE, Web of Science, and Google Scholar, showed POCUS significantly improved success rates (OR: 4.25), first‐attempt success (OR: 5.31), reduced attempts (MD: −0.83), and decreased procedure time (MD: −9.75 min). Fewer complications (OR: 0.49) observed with POCUS compared to standard techniques. …"

Fast Sampling of Score-Based Models With Cyclical Diffusion Sampling حسب Karimul Makhtidi (21401540)

"…We have shown, via empirical assessments, that cyclical diffusion sampling significantly enhances image quality and markedly decreases inference time. Notably, the method preserves simplicity and requires no alterations to the network architecture, which promotes straightforward reproducibility and seamless integration with current methodologies.…"

Changes in Blood microRNA Expression and Early Metabolic Responsiveness 21 Days Following Bariatric Surgery حسب Stephen L. Atkin (6684368)

"…</p><p dir="ltr"><br></p><h3>Methods: </h3><p dir="ltr">Twenty-nine type 2 patients with severe obesity (mean BMI 46.2 kg/m²) and diabetes underwent Roux-en-Y gastric bypass (RYGB) surgery. …"

The impact of metformin therapy for gestational diabetes on fetal growth in women with risk factors for fetal growth restriction- a registry-based study from Qatar حسب Komal Rafique (17075074)

"…</p> <h3>Conclusion</h3> <p>The results of this study suggest that in women with additional risk factors for FGR, the concurrent use of metformin significantly decreases the birthweight and increases the risk for LBW, SFD, PTB and admission to NICU. …"

Enhanced PSO-Based NN for Failures Detection in Uncertain Wind Energy Systems حسب Khaled Dhibi (16891524)

"…The proposed methodology improves the diagnosis abilities, reduces the computation time, and decreased the storage cost. The presented experimental results prove the high performance of the suggested paradigms in terms of computation time and accuracy.…"

Use of Carbide Derived Carbon in Water Treatment and Thermal Fluids Applications حسب Ismail W. Almanassra (14151321)

"…In this study, carbide derived carbon (CDC) synthesized from a titanium carbide precursor was used for the first time in the adsorptive removal of phosphate, ibuprofen and surfactants from aqueous solutions. …"

Graph-Guided Regularized Regression of Pacific Ocean Climate Variables to Increase Predictive Skill of Southwestern U.S. Winter Precipitation حسب Tejedor, Alejandro

"…Physics-based deterministic models show limited ability to predict precipitation as the lead time increases, due to imperfect representation of physical processes and incomplete knowledge of initial conditions. …"
احصل على النص الكامل