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Experimental study on pore structure and dynamic mechanical properties of modified rubber concrete after freeze-thaw cycle
Published 2025-02-01“…With the increase of freeze-thaw cycles, the porosity of the specimens increases continuously. The elastic action of rubber particles can reduce the increase of the internal porosity of concrete under the action of freeze-thaw cycles and reduce the internal porosity of concrete materials. (3) The peak stress and dissipated energy of three kinds of concrete specimens decreased linearly due to freeze-thaw cycle, and the decrease of plain concrete was higher than that of modified rubber concrete. …”
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Acute Effects of Drop Jumps on Lower Limb Stiffness and Mechanical and Kinematic Parameters During High-Speed Treadmill Running
Published 2024-12-01“…This study aimed to investigate the post-activation performance enhancement effects of drop jumps (DJs) on lower limb stiffness [leg stiffness (K<sub>leg</sub>); vertical stiffness (K<sub>vert</sub>)] and the related mechanical [maximal ground reaction force (F<sub>max</sub>), vertical displacement of the centre of mass (Δy), and lower limb length (ΔL)] and kinematic parameters [step length (SL), step frequency (SF), flight time (FT), and contact time (CT)] during high-speed treadmill running. …”
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Neural mechanisms of intersensory switching: Evidence for delayed sensory processing and increased cognitive demands
Published 2025-04-01“…In this study, high-density EEG was used to investigate these mechanisms in healthy adults (n = 53; mean age 26±7.39; 30 female) performing a speeded reaction time (RT) task involving visual and auditory stimuli. …”
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Dissolution of Tunisian phosphate ore by a mixture of sulfuric and phosphoric acid: Kinetics study by means of differential reaction calorimetry
Published 2019-01-01“…A mixture of phosphoric and sulfuric acid was used to investigate the dissolution kinetics of phosphate ore by Differential Reaction Calorimetry (DRC). The effect of the solid-to-iquid ratio, concentration, stirring speed, particle size and temperature of the reaction is examined. …”
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Feasibility of a Non-Anticipatory, Random-Action Target System to Improve Shooting Performance: A Brief Field Trial
Published 2024-11-01“…Observational data were gathered from a single-day, three-round trial to test shooting accuracy and shooting errors when shooters were unable to anticipate target appearance location and target exposure speed. In Trial 1, the target exposure time was 0.5 s, which increased to 0.7 s in Trial 2, and decreased back to 0.5 s in Trial 3. …”
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identify and find the relationship between the kinetic dispersion of the muscles and the kinetic reaction and performance of the kinetic formation on the balance beam device
Published 2018-09-01“…The researcher concluded that there is an adverse correlation between the variables of the research and concluded the need for integration between the speed of the motor response, the more affected the dispersion of the motor, which reflected negatively on performance and ensure the performance of the kinetic array on the balance-balance device to be at a high level should increase improvement in time of motor reaction and kinetic dispersion. …”
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Spatiotemporal Gait Asymmetries Remain Unaffected by Increased Load Carriage in Professional Intervention Police Officers
Published 2024-11-01“…Results: The findings indicated no statistically significant differences in the spatiotemporal parameters, nor ground reaction force gait asymmetries between the left and right foot, during walking under a progressively increased load carriage. …”
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Cognitive functioning in young adults after mild COVID-19: A case-control study from Iran
Published 2025-12-01“…However, COVID-19-infected individuals exhibited significantly longer completion times for the congruent Stroop test and increased reaction times compared to healthy controls (p < 0.05). …”
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Effect of biochar and cyanobacteria crust incorporation on soil wind erosion in arid mining area under freeze-thaw action
Published 2025-05-01“…Cyanobacteria crusts can inhibit wind erosion, but their biomass decreases under freeze-thaw conditions. There is limited research on whether combining biochar with cyanobacteria crusts can alleviate the impact of freeze-thaw on their wind erosion resistance. …”
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Measurement report: Long-term assessment of primary and secondary organic aerosols in the Shanghai megacity throughout China's Clean Air actions since 2010
Published 2025-05-01“…Furthermore, SOC concentrations exhibited simultaneous increases in summer, particularly when O<span class="inline-formula"><sub>3</sub></span> concentrations exceeded 50 <span class="inline-formula">µ</span>g m<span class="inline-formula"><sup>−3</sup></span>, indicating that stronger oxidation reactions contribute to higher SOC concentrations. …”
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Development of technologies and tools for drilling additional wells from artificial bottom-hole with whipstock of continuous action in hard and very hard rocks
Published 2020-11-01“…A feature of the work of a milling type whipstocks is that the creation of a deflecting force is carried out due to the constant influence of the axial load, the value of which proportionally affects the speed of drilling. A review of the materials used to create an artificial bottom led to the conclusion that at present there are no curable materials that would have a hardness higher than category 8 for drillability, which means that when trying to drill a new direction of a well in rocks more than 8 grade for drillability, the speed drilling with a continuous action whipstocks will exceed the optimum and reduce the intensity of the buildup rate whipstock.Conclusion. …”
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Effects of almond, dried grape and dried cranberry consumption on endurance exercise performance, recovery and psychomotor speed: protocol of a randomised controlled trial
Published 2019-10-01“…The primary outcome is endurance exercise performance (5 min time-trial performance) and secondary outcomes include markers of NO synthesis (plasma and urinary nitrites and nitrates), muscle damage (serum creatine kinase and lactate dehydrogenase), oxidative stress (F2-isoprostanes), endurance exercise function (exercise efficiency, submaximal oxygen consumption and substrate utilisation), markers of internal training load (subjective well-being, rating of perceived exertion, maximal rate of heart rate increase and peak heart rate) and psychomotor speed (choice reaction time).Conclusion This study will evaluate whether consuming AGC improves endurance exercise performance, recovery and psychomotor speed across an endurance training programme, and evaluate the mechanisms responsible for any improvement.Trial registration number ACTRN12618000360213.…”
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Energy transport in MHD Maxwell hybrid nanofluid flow over inclined stretching porous sheet with effects of chemical reaction, solar radiation and porous medium
Published 2025-04-01“…The concentration profile increases for increasing magnitudes of magnetic field parameters, porosity parameters, and volume fractions, but decreases for increasing chemical reaction parameter, and suction parameter. …”
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Synergistic effects of magnetic fields and flow velocity on hydrogen bubble dynamics in water electrolysis
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Method for Solving the Problem of Load Movement over the Ice Cover of a Reservoir along a Complex Trajectory
Published 2023-07-01“…Calculations showed that the deflection of the ice cover increased markedly with the growth of speed and tangential acceleration of the load movement. …”
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Effect of mannitol injection rate on intracranial pressure (甘露醇静脉推注速度对颅内压的影响)
Published 2021-05-01“…Objective To investigate the effect of static pushing speed of mannitol on the intracranial pressure. Methods Totally 70 children with acute intracranial pressure increase were divided into two groups: 35 cases in the control group received routine rate of mannitol injection and 35 cases in the observation group received the slow first and then fast injection of mannitol. …”
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Applications of Hydrogenous Species for Initiation of Carbon Monoxide/Air Premixed Flame
Published 2025-06-01“…The oxidation of CO with an oxidizer is relatively unusual, with the oxidation of CO having a slow reaction time. The addition of a small amount of “hydrogenous” species, such as H<sub>2</sub>, H<sub>2</sub>O, and CH<sub>4</sub>, will substantially increase the reaction time. …”
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PDDL Task Planning for Tunnel Spraying Based on a Multivariate Coating Accumulation Model
Published 2025-05-01“…Based on the required thickness for each task layer, operational parameters such as the spraying duration <i>t</i> and nozzle movement speed <i>v</i> are optimized. By analyzing the spray gun action combinations and integrating hierarchical task planning with parameter optimization, a Planning Domain Definition Language (PDDL) domain file and problem file are designed to generate the spray gun action sequences and paths via a planner. …”
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