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Performance comparison of different flow arrangements of 4-fluid internally-cooled liquid desiccant dehumidifiers
منشور في 2022"…The approximate difference between the best and poorest performing flow arrangements in terms of the decrease in supply air humidity ratio and enthalpy is 4.3% and 10.5%, respectively. …"
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Operation optimization of propane pre-cooled mixed refrigerant LNG Process: A novel integration of knowledge-based and constrained Bayesian optimization approaches
منشور في 2024"…At large-scale LNG production (10,000 tons per day), the reduction in the SEC is translated into an 18 MW decrease in compression power, saving approximately 4.7 million $ per year for each C3MR train. …"
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Impact of staying at home measures during COVID-19 pandemic on the lifestyle of Qatar’s population: Perceived changes in diet, physical activity, and body weight
منشور في 2021"…Participants reported increased sitting/reclining time (1.94 h/day mean increase), screen times (2.05 h/day mean increase) with p < 0.001, and decreased exercise time (0.11 h/day mean reduction) with p < 0.001. …"
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Impact of Life-coaching on Students' Wellbeing and Engagement Levels in a Preparatory School in Qatar
منشور في 2019"…However, the decrease was overall slighter with coaching group students. …"
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Evaluation of the Surface Integrity and Recast Layer in Electrical Discharge Turning of WC-Co Composites
منشور في 2024"…The results indicated that increasing the rotational speed led to a 10% to 17% decrease in the recast layer thickness and a 14% to 54% reduction in the surface roughness (Ra).…"
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Global, regional, and national burden of household air pollution, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021
منشور في 2025"…FindingsIn 2021, 2·67 billion (95% uncertainty interval [UI] 2·63–2·71) people, 33·8% (95% UI 33·2–34·3) of the global population, were exposed to HAP from all sources at a mean concentration of 84·2 μg/m3. Although these figures show a notable reduction in the percentage of the global population exposed in 1990 (56·7%, 56·4–57·1), in absolute terms, there has been only a decline of 0·35 billion (10%) from the 3·02 billion people exposed to HAP in 1990. …"
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Worldwide trends in blood pressure from 1975 to 2015: a pooled analysis of 1479 population-based measurement studies with 19·1 million participants
منشور في 2017"…Global age-standardised prevalence of raised blood pressure was 24·1% (21·4–27·1) in men and 20·1% (17·8–22·5) in women in 2015. Mean systolic and mean diastolic blood pressure decreased substantially from 1975 to 2015 in high-income western and Asia Pacific countries, moving these countries from having some of the highest worldwide blood pressure in 1975 to the lowest in 2015. …"
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Hydrogen energy systems: Technologies, trends, and future prospects
منشور في 2024"…Presently, electrolysis efficiencies range between 60 % and 80 %, with hydrogen production costs around $5 per kilogram. Strategic advancements are necessary to reduce these costs below $2 per kilogram and push efficiencies above 80 %. …"
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Trends of the Dementia Burden in South Asia: An Analysis of 2021 Global Burden of Disease Study
منشور في 2025"…</p><h3>Results</h3><p dir="ltr">A slight decrease in incidence rates from 80.57 to 79 per 100,000 was observed, alongside a significant increase in mortality rates from 14.11 to 17.2 per 100,000. …"
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Food safety knowledge attitude and practices of oncology nurses, in Lebanese hospitals
منشور في 2023"…Knowledge scores were higher among nurses holding a graduate degree (mean = 85; p < 0.05), and those who attended a training course (mean = 79; p < 0.05). …"
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Double versus triple arthrodesis for adult-acquired flatfoot deformity due to stage III posterior tibial tendon insufficiency: a prospective comparative study of two cohorts
منشور في 2022"…The mean Hibbs angle decreased from 153.07 to 142.32° (MD = 10.54°, p < 0.001). …"
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Forecast of the outbreak of COVID-19 using artificial neural network: Case study Qatar, Spain, and Italy
منشور في 2021"…The model sensitivity was analyzed using the root mean square error (RMSE), the mean absolute percentage error and the regression coefficient index R2, which yielded highly accurate values of the predicted correlation for the infected and dead cases of 0.99 for the dates considered. …"
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Machine Learning and Carbonate Reservoirs : A Production Data Perspective on Permeability Modelling
منشور في 2024"…</p><p dir="ltr">The ANN was rigorously tested, showing remarkable accuracy with the highest mean squared error (MSE) being 7.02 and the lowest MSE being 1.19, demonstrating its capability of modeling permeability. …"
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The global, regional, and national burden of stomach cancer in 195 countries, 1990–2017: a systematic analysis for the Global Burden of Disease study 2017
منشور في 2020"…The highest age-standardised incidence rates in 2017 were seen in the high-income Asia Pacific (29·5, 28·2–31·0 per 100 000 population) and east Asia (28·6, 27·3–30·0 per 100 000 population) regions, with nearly half of the global incident cases occurring in China. …"
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Global, regional, and national burden of upper respiratory infections and otitis media, 1990–2021: a systematic analysis from the Global Burden of Disease Study 2021
منشور في 2024"…The mortality rate of URIs in 2021 was 0·2 per 100 000 (0·1 to 0·5), a decrease of 64·2% (–84·6 to –43·4) from 1990, when the mortality rate was 0·7 per 100 000 (0·2 to 1·1). …"
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Central and peripheral muscle fatigue following repeated‐sprint running in moderate and severe hypoxia
منشور في 2020"…No significant differences between conditions for mean distance occurred in set 2. There was a decrease in maximal voluntary contraction torque (Δ = −31.4 ± 18.0 N m, <i>P</i> < 0.001) and voluntary activation (%VA; Δ = −7.1 ± 5.1%, <i>P</i> = 0.001) from Pre- to Post-set 1, but there was no effect of hypoxia. …"