Do near-bedtime usage of smartphones and problematic internet usage really impact sleep? A study based on objectively recorded usage data حسب Aftab Alam (5158601)

"…</p><h3> Results</h3><p dir="ltr">The multivariate linear regression showed that the increase in PIU (β = −0.231, p < 0.001) and smartphone usage two hours before sleep (β = −0.246, p < 0.001) led to decrease in sleep duration. Regarding sleep distraction, multivariate linear regression analysis revealed that two hours before sleep was a significant and positive predictor of sleep distraction (β = 0.197, p = 0.003), whereas PIU was not significant. …"

Angiotensin II AT1 receptor internalization, translocation and de novo synthesis modulate cytosolic and nuclear calcium in human vascular smooth muscle cells حسب Sleiman, S.

"…Overexpression of hAT1R and hAT1R GFP decreased both basal cytosolic and nuclear Ca2+. In normal hVSMCs and low hAT1R GFP overexpressing hVSMCs, Ang II (10 15 to 10 4 M) induced a dose-dependent sustained increase of [Ca]c and [Ca]n with an EC50 near 5 × 10 11 and 5 × 10 9 M, respectively. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Trends in the global, regional, and national burden of oral conditions from 1990 to 2021: a systematic analysis for the Global Burden of Disease Study 2021 حسب Eduardo, Bernabe

"…The European region was the only region with decreasing age-standardised prevalence of untreated caries in both deciduous (–9·88%; –12·6 to –6·71) and permanent teeth (–5·94% (–8·38 to –3·62). …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Treatment with a Combination of Metformin and 2-Deoxyglucose Upregulates Thrombospondin-1 in Microvascular Endothelial Cells: Implications in Anti-Angiogenic Cancer Therapy حسب Samson Mathews Samuel (18808246)

"…Treatment with a combination of 2DG (5 mM) and metformin (2 mM) also significantly decreased cell proliferation, migration and tubulogenic capacity when compared to cells that were treated with either 2DG or metformin alone. …"

Synthetic Cannabinoid AB-FUBINACA Negatively Impacted the Male Fertility and Induced Testicular Toxicity حسب Ayman Alzu’bi (13162392)

"…AB-FUBINACA treatment also causes a significant dose related decrease in sperm viability. These findings were associated with higher level of oxidative stress (GP91 expression and malondialdehyde level) and elevated expression of key regulators of apoptosis (Bax and caspase-3) as well as reduced expression of mitochondrial respiratory chain complexes SDHB (II), UQCRC2 (III), and ATP5a (V) in the testicular tissue.…"

Shear Behavior of One-Way Reinforced Concrete Hollow Slabs Voided with PET Void Formers حسب Hasan, Haider H.

احصل على النص الكامل

Geomorphological changes in the coastal area of Farasan Al-Kabir Island (Saudi Arabia) since mid Holocene based on a multi-proxy approach حسب Pavlopoulos, Kosmas

"…The mid Holocene evolution of the borehole area is resulted from the detailed analysis of five sedimentary units detected along the core Matar-1, and includes three distinct stages: (a) from 5253 ± 223 y cal BP to 3138 ± 223 y cal BP, carbonate coarse-grained material consisting of coral fragments, molluscs, calcareous algae and benthic foraminifera are deposited on a shallow marine fringing reefal platform, which becomes progressively a nearshore backreef (around 3675 ± 215 y cal BP), and later (around 3138 ± 223 y cal BP) a reef ramp; (b) since 3040 ± 220 y cal BP the borehole area obtains the characteristics of a high-energy beach that receives increasing inputs of terrigenous material; (c) subsequently, a supratidal backshore setting is established influenced mostly by terrestrial processes and occasionally by marine processes, as it is indicated by the decreasing and sometimes sporadic presence of benthic foraminifera, and recently, a sedimentary veneer consisting of terrigenous, carbonate and evaporite material is formed by terrestrial, mainly wadi and aeolian, processes. © 2018 Elsevier Ltd and INQUA…"
احصل على النص الكامل
احصل على النص الكامل

An Investigation into the factors influencing Arabic speaking students’ proficiency in the Arabic language in Dubai British School حسب AL AHMAD, ALAAEDDIN MEHY

"…The schools selected for this study were five British and two Arabic schools. The participants of this study comprised 211 students from grades 2, 5, 7 and 10, in addition to 39 Arabic teachers, 12 leaders and 83 parents from both types of schools. …"
احصل على النص الكامل

A Numerical Study of Heat Transfer and Fluid Flow in a Channel with an Array of Pin Fins in Aligned and Staggered Configurations حسب Issa, Johnny

"…The dimensionless spacing, S*, defined as the ratio of the gap between the fin walls to the fin diameter, is varied between a value of 0.5 and 1. Nine different approaching velocities are considered in this study which resulted in Reynolds number values ranging between 5 and 160. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Hypoxic Stress Induces Complement-Mediated Lysis of Mesenchymal Stem Cells by Downregulating Factor H and CD59 حسب Ramada R. Khaswaneh (22224544)

"…Severe hypoxia found to decrease the survival chances of MSCs after transplantation; however, little is known about the impact of severe hypoxia on modulating the complement system activity and its effect on MSCs survival. …"

Influenza prevalence and vaccine efficacy among diabetic patients in Qatar حسب Swapna Thomas (17337925)

"…Among the typed IVA-positive cases, 33.4% were H1N1, and 7.7% were H3N2. A significant decrease in influenza infections was reported in vaccinated DM patients (14.5%) when compared to non-vaccinated patients (18.9%) (p-value = 0.006). …"

Qatar’s immigrants at higher risk of diabetes حسب Nature Research (16552612)

"…Those of South Asian descent had a 13-fold increased risk of having elevated glycated haemoglobin levels, and Filipinos a 4.5-fold increase, compared to the native Arab population. …"

The Grid Iron Patterns & Detached Villas as the Main Drivers of Sharjah City’s Urban Sprawl حسب MOHAMED, SHAMSELDIN SAEED

"…On the demographic side, the massive external population migration that trickled towards the city resulted in a major defect in its demographic structure, which represented a decrease in the percentage of the citizen population to only about 10% of the non-citizen population. …"
احصل على النص الكامل

Towards secure private and trustworthy human-centric embedded machine learning: An emotion-aware facial recognition case study حسب Muhammad Atif Butt (10849980)

"…However, despite the significant impact of AI design on human interests, the security and trustworthiness of edge AI applications are not foolproof and ethicalneither foolproof nor ethical; Moreover, social norms are often ignored duringin the design, implementation, and deployment of edge AI systems. …"

Wind shear coefficient, turbulence intensity and wind power potential assessment for Dhulom, Saudi Arabia حسب Rehman, Shafiqur

"…The study also includes the local values of air density calculated using temperature and pressure measurement made at 2 m AGL during the same period. The mean wind speed above 4 m/s and the standard deviation values were used to obtain the turbulence intensities (TI) at different heights. …"
احصل على النص الكامل

A new perspective on cardiovascular drift during prolonged exercise حسب Amine Souissi (9931616)

"…<p dir="ltr">Prolonged exercise induces cardiovascular drift, which is characterized by decreasing mean arterial pressure (MAP), stroke volume and heart rate increase. …"

Prediction of biogas production from chemically treated co-digested agricultural waste using artificial neural network حسب Fares Almomani (12585685)

"…An ANN model consists of three layers, 15 neutrons and 260 <i>epochs</i> accurately predict the CMP with 99.1% of data within ±10% deviation of the mean experimental value. The developed model can be used to forecast the CMP as a function of operating temperature, the substrate composition, and chemical dose, and can be used for scaling-up and cost analysis purposes.…"

Investigation of Groundwater Depletion in the State of Qatar and Its Implication to Energy Water and Food Nexus حسب Hazrat Bilal (7367477)

"…Long-term temperature data indicates that the annual mean temperature increased significantly by 1.02 °C between 1987 and 2016, while total rainfall exhibited a slight decreasing trend. …"

Public motives and willingness to participate in first-in-human clinical trials in Saudi Arabia: A new era in the making حسب Almutairi, Adel F.

"…Almost 71.5% expressed their intention to enroll in such trials. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Rapid mercury removal using living indigenous microalgal communities for water treatment applications حسب Amr Nasr Fekry (22521185)

"…Kinetic studies showed superior correlation with the pseudo-second-order model (R² > 0.996), with rate constants decreasing systematically from 767.5 to 216.0 g/mg·min as concentration increased, suggesting secondary chemical interactions may also contribute to the overall mechanism. …"