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101
Diesel engine vibration analysis using artificial neural networks method: Effect of NH<sub>3</sub> additive in biodiesels
منشور في 2024"…This study aimed to use artificial neural networks (ANN) to model and analyse diesel engine vibration characteristics at different engine speeds using NH<sub>3</sub> as an additive in hazelnut (HD), peanut (PD), and waste-cooking oil (WD) biodiesels. …"
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102
Towards Industry 4.0 and Sustainable Manufacturing Applying Environmentally Friendly Machining of a Precipitation Hardened Stainless Steel Using Hot Turning Process
منشور في 2023"…Moreover, it has been shown that by increasing preheating temperature in hot turning, the hardness of the carbides in the workpiece decreases more than the hardness of the tool substrate and reduces coating materials, consequently reducing cutting tool abrasion wear phenomenon.…"
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103
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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104
The Economic Impact of Optimizing a COVID-19 Management Protocol in Pre-Existing Cardiovascular Disease Patients
منشور في 2023"…In the critically ill patients, however, the cost increased from QAR202,094 (USD 55,505) to QAR292,856 (USD 80,433) per patient, with added cost of QAR90,762 (USD 24,928). …"
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105
Exploring urban growth–climate change–flood risk nexus in fast growing cities
منشور في 2022"…Surveying showed that, between 1984 and 2020, urban areas grew by 777%, and bare lands decreased by 54.7%. In addition, Doha witnessed various climatic changes with a notable increase in air temperature (+ 8.7%), a decrease in surface wind speed (− 19.5%), and a decrease in potential evapotranspiration losses (− 33.5%). …"
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106
Trends and levels of the global, regional, and national burden of appendicitis between 1990 and 2021: findings from the Global Burden of Disease Study 2021
منشور في 2024"…FindingsIn 2021, the global age-standardised mortality rate of appendicitis was 0·358 (95% uncertainty interval [UI] 0·311–0·414) per 100 000. Mortality rates ranged from 1·01 (0·895–1·13) per 100 000 in central Latin America to 0·054 (0·0464–0·0617) per 100 000 in high-income Asia Pacific. …"
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107
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"…InterpretationAlthough the burden attributable to HAP has decreased considerably, HAP remains a substantial risk factor, especially in sub-Saharan Africa and south Asia. …"
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108
Reinforced steering Evolutionary Markov Chain for high-dimensional feature selection
منشور في 2024"…(v) The effective size of successful agents is reduced recursively while progressing through different states to further facilitate the speed of convergence and decrease the number of features. …"
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109
Biodegradable polysaccharide grafted polyacrylamide inhibitor for corrosion in CO<sub>2</sub>- saturated saline solution
منشور في 2023"…Nevertheless, the AGGPAM-inhibited solution exhibited a corrosion rate of 26.7 mils per year at 50 °C, which is still lower than that of blank at 25 °C. …"
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110
Excess pCO2 and carbonate system geochemistry in surface seawater of the exclusive economic zone of Qatar (Arabian Gulf)
منشور في 2022"…CO2 is lost from the Gulf due to gas exchange, decreasing DIC, and reducing pCO2 to 464 μatm, similar to that observed. …"
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111
Simulation of the size-composition distribution of atmospheric nanoparticles over Europe
منشور في 2018"…The ground level concentrations of particles with a diameter larger than 100 nm (N100) were reproduced with a daily normalized mean error of 40 % and a daily normalized mean bias of −20 %. …"
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112
Understanding the phenomenon of saltwater intrusion sourced from desalination plants at coastal aquifers
منشور في 2023"…Miscible displacements of potassium bromide were observed from a column of 2.0–2.8 mm aggregates of sepiolite over 4 ranges of concentration and at 11 displacement speeds under saturated vertical flow deionized water and vice versa. …"
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113
Portfolio Selection Problem Using CVaR Risk Measures Equipped with DEA, PSO, and ICA Algorithms
منشور في 2022"…It was found that when solving the Mean-CVaR model with evolutionary algorithms, the risk decreased. …"
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114
Which factor explains the life‐history of <i>Xanthium strumarium</i> L., an aggressive alien invasive plant species, along its altitudinal gradient?
منشور في 2022"…Among climatic variables, mean yearly temperature, mean annual yearly humidity, and mean day length in hours, while in soil variables, organic matter and nitrogen percentage significantly affect the phenological and morphological stages. …"
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115
Land surface temperature responses to land use dynamics in urban areas of Doha, Qatar
منشور في 2024"…The LST data derived from remote sensing sources demonstrates an upward trend for summer and a contrasting trend for winter. Specifically, the mean summer LST increases by 7.64 °C (0.34 °C annually), and the mean winter LST decreases by 4.87 °C (0.22 °C annually). …"
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116
Epidemiological and clinical characteristics of fall-related injuries: a retrospective study
منشور في 2020"…</p> <h2>Results</h2> <p>A total of 4040 patients with fall-related injuries were identified in the study duration which corresponds to the rate of 2.34 per 10,000 population. Although the rate of fall-related injuries decreased over the years, the average number of patients per year remained high accounting for 32% of the hospitalized patients with moderate to severe injuries. …"
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117
Simulation of microscale particle interactions for optimization of an electrodynamic dust shield to clean desert dust from solar panels
منشور في 2017"…Dust transport distance per 10 cycles generally decreased as cycle frequency increased from 0.5 to 10Hz; however, transport distance per time was largest with an intermediate frequency of 1Hz. …"
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118
Mental health, burnout and resilience in community pharmacists during the COVID-19 pandemic: A cross-sectional study
منشور في 2022"…Participants had shown moderate resilience (mean score: 27.64 (SD = 8.31)) and their mean score fear of COVID19 was 15.67 (SD = 6.54). …"
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119
Excess pCO<sub>2</sub> and carbonate system geochemistry in surface seawater of the exclusive economic zone of Qatar (Arabian Gulf)
منشور في 2022"…CO<sub>2</sub> is lost from the Gulf due to gas exchange, decreasing DIC, and reducing pCO<sub>2</sub> to 464 μatm, similar to that observed. …"
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120
Changing life expectancy in European countries 1990–2021: a subanalysis of causes and risk factors from the Global Burden of Disease Study 2021
منشور في 2025"…In 2019–21, there was an overall decrease in mean annual life expectancy across all countries (overall mean –0·18 years [95% UI –0·22 to –0·13]), with all countries having an absolute fall in life expectancy except for Ireland, Iceland, Sweden, Norway, and Denmark, which showed marginal improvement in life expectancy, and Belgium, which showed no change in life expectancy. …"
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