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161
A new perspective on cardiovascular drift during prolonged exercise
منشور في 2021"…<p dir="ltr">Prolonged exercise induces cardiovascular drift, which is characterized by decreasing mean arterial pressure (MAP), stroke volume and heart rate increase. …"
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162
Crunching the numbers of food poisoning in Qatar
منشور في 2016"…The trend was generally decreasing during the investigated time period, which can be attributed to improvements in the food chain and sanitation in the country, they say.…"
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163
The global, regional, and national burden of colorectal cancer and its attributable risk factors in 195 countries and territories, 1990–2017: a systematic analysis for the Global B...
منشور في 2019"…Globally, colorectal cancer accounted for 896 000 (876 300–915 700) deaths in 2017, with an age-standardised death rate of 11·5 (11·3–11·8) per 100 000 person-years, which decreased between 1990 and 2017 (−13·5% [–18·4 to −10·0]). …"
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164
Impact of aluminium acetate particles size on the gelation kinetics of polyacrylamide‐based gels: Rheological and molecular simulation study
منشور في 2023"…Using 7 wt.% PAM/1 wt.% AlAc with sizes of 25 and 48 μm revealed a crosslinking time of 17 and 115 min, respectively. The addition of bentonite at low crosslinker concentrations (0.5–1 wt.%) did not decrease the gel strength of 7 wt.% PAM/1 wt.% AlAc significantly. …"
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165
Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane
منشور في 2024"…The results indicated that tensile and flexural strength decreased by 35.16 % and 29.3 % respectively, from S1 to S10. …"
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166
Cardiorespiratory Fitness and Performance Adaptations to High-Intensity Interval Training: Are There Differences Between Men and Women? A Systematic Review with Meta-Analyses
منشور في 2023"…Data were sub-grouped for men and women, baseline training level, mean age, intervention type, and intervention length. …"
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167
Engineering the Surface and Mechanical Properties of Water Desalination Membranes Using Ultralong Carbon Nanotubes
منشور في 2018"…The water flux of the fabricated membranes increased considerably (up to 20 times) along with the increase in CNT loading. Conversely, yield stress and Young’s modulus of the membranes dropped with the increase in the CNT loading mainly due to porosity increase. …"
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168
Qatar’s Evolving National Identity in Schools: A Twitter Perspective from 2015 to 2019
منشور في 2022"…These findings support the notion that during times of crisis, nationalism is articulated more strongly and mobilized as a response to an existential threat.…"
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169
Insights on the effect of water content in carburizing gas mixtures on the metal dusting corrosion of iron
منشور في 2022"…At later stage, the formation of oxide scale leads to an elevated concentration of H<sub>2</sub>O/OH molecules on the surface due to the decrease in Fe affinity to dissociate water. This results into blocking the Fe catalytic sites leading to lower C and O diffusion to the bulk of the sample.…"
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170
Thermally Conductive Polyethylene/Expanded Graphite Composites as Heat Transfer Surface: Mechanical, Thermo-Physical and Surface Behavior
منشور في 2020"…This enhanced surface wettability was retained over a long time with only a 9% and 18% decrease in RF and corona plasma-treated samples’ surface energy after two months. …"
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171
Deep Learning-Based Fault Diagnosis of Photovoltaic Systems: A Comprehensive Review and Enhancement Prospects
منشور في 2021"…The performance of the FDD method depends mainly on the quality of the extracted features including real-time changes, phase changes, trend changes, and faulty modes. …"
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172
Privacy-Preserving Fog Aggregation of Smart Grid Data Using Dynamic Differentially-Private Data Perturbation
منشور في 2022"…We describe our differentially-private model with flexible constraints and a dynamic window algorithm to maintain the privacy-budget loss in infinitely generated time-series data. Our experimental results show a possible decrease in data perturbation error by 51.7% and 61.2% for smart meters and fog-computing data aggregators perturbed data, respectively, compared to the commonly used Gaussian mechanism.…"
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173
Investigation of the structural, optical and gas sensing properties of PANI coated Cu–ZnS microsphere composite
منشور في 2020"…In particular, PANI/Cu–ZnS sensor shows good response (31 s) and recovery time (23 s) upon exposure to CO<sub>2</sub> gas. …"
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174
Grid integration of renewable energy in Qatar: Potentials and limitations
منشور في 2021"…A one-year dynamic analysis based on an hourly time step is conducted using the EnergyPLAN tool. …"
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175
Solar syngas production via methanothermal reduction of strontium oxide
منشور في 2020"…Application of heat recuperation considerably decreased the requirement of solar energy input, and hence the process efficiency is further amplified. …"
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176
Modeling the influence of daily temperature and precipitation extreme indices on vegetation dynamics in Katsina State using statistical downscaling model (SDM)
منشور في 2023"…The results indicate that the statistical downscaling model (SDSM) is performing satisfactorily in predicting maximum and minimum temperatures, along with precipitation, for the time horizon of the simulation. Mean precipitation of 1.98 mm (RCP2.6), 2.03 mm (RCP4.5), and 2.07 mm (RCP8.5) was revealed in the study area. …"
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177
Application of Enhanced Self-Adaptive Virtual Inertia Control for Efficient Frequency Control of Renewable Energy-Based Microgrid System Integrated with Electric Vehicles
منشور في 2025"…It is noticed that with the SAEVIC approach, the overshoot (OS)-11.40%, undershoot (US)- 46.46%, settling time (ST)-98.6% and fitness value-10.27% are decreased as compared to conventional enhanced VI approach under Stochastic variations of wind, PV, and multi-step load disturbance of MG system.…"
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178
FLACON: A Deep Federated Transfer Learning-Enabled Transient Stability Assessment During Symmetrical and Asymmetrical Grid Faults
منشور في 2024"…To avoid the constant adjustment of hyperparameters, the FLACON employs an inductive transfer learning approach for hyperparameter tuning of the pre-trained model, markedly decreasing training time. Extensive experiments on datasets from the IEEE 39-bus system and the IEEE 68-bus system demonstrate FLACON's exceptional accuracy of 98.98% compared to some competitive alternatives.…"
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179
Optimization of Community Integrated Energy System for the State of Qatar Towards Sustainable Development
منشور في 2025"…This is mainly due to the highest emissions per capita records and contribution to the climate change issue. …"
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180
Old subjects with sepsis in the emergency department: trend analysis of case fatality rate
منشور في 2019"…</p><h3>Results</h3><p dir="ltr">Two thousand four hundred ninety-two subjects were included. Over time the incidental admission rate (no. of sepsis-related admissions per 100 total admissions) increased from 4.1% (2009–2010) to 5.4% (2015–2016); P < 0.001, accompanied by a reduced CFR (from 38.0 to 18.4%; P < 0.001). …"