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The effect of bi-iliac breadth on core body temperature.
J Hum Evol
October 2024
Evolutionary Anthropology, Duke University, Durham, NC, USA; Duke Global Health Institute, Duke University, Durham, NC, USA.
Thermoregulation is argued to be an important factor influencing body breadth in hominins based on the relationship of surface area to body mass first proposed by Bergmann. Selection for a narrow thorax, and thus a narrow pelvis, increases body surface area relative to body mass, which could be beneficial in hot climates if it leads to a decrease in core body temperature. However, the relationship between pelvic breadth and thermoregulation in humans has not been established.
View Article and Find Full Text PDFFeasibility study of ultra-low-head hydro turbines for energy extraction from shallow waterways.
Heliyon
August 2024
Convergence Manufacturing System Engineering (Green Process and Energy System Engineering), University of Science & Technology, Daejeon, South Korea.
Ultra-low-head turbines can harness energy from previously deemed unsuitable sites, including natural and man-made locations like shallow estuaries, marine canals, and industrial waterways. Various hydro-turbine concepts were evaluated for their potential to extract power from these areas. These turbines can generate renewable energy for utilization in remotely located areas.
View Article and Find Full Text PDFNumerical modeling and CFD simulation of diffuser augmented dual vertical axis hydrokinetic Banki-Michell turbine.
Heliyon
March 2024
Université Libre de Bruxelles, Aero-Thermo-Mechanics Department, Avenue F.D. Roosevelt 50, CP 165/41, 1050, Brussels, Belgium.
Hydrokinetic Banki turbines present an affordable, technically feasible, environmentally friendly technology. Their construction without requiring more expensive structures like diversion weirs, canals, forebay, and penstock, makes their initial investment much lower than commonly used horizontal Banki turbine of the same capacity. The possibility to install in the existing canals for Ultra Low Head applications is the additional motivating factor for this research.
View Article and Find Full Text PDFEffect of Preheat Temperature and Welding Sequence on the Temperature Distribution and Residual Stress in the Weld Overlay Repair of Hydroturbine Runner.
Materials (Basel)
July 2022
Hongshanzui Power Plant, Xinjiang Tianfu Energy Co., Ltd., Shihezi 832003, China.
The hydroturbine runner is the core of the whole hydroelectric generating unit, which is employed to transform water energy into mechanical energy. In the process of service, the runner frequently suffers from abrasion due to erosion and cavitation. Defects are usually repaired by welding.
View Article and Find Full Text PDFEstimating Running Ground Reaction Forces from Plantar Pressure during Graded Running.
Sensors (Basel)
April 2022
Human Performance Laboratory, Department of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada.
Ground reaction forces (GRFs) describe how runners interact with their surroundings and provide the basis for computing inverse dynamics. Wearable technology can predict time-continuous GRFs during walking and running; however, the majority of GRF predictions examine level ground locomotion. The purpose of this manuscript was to predict vertical and anterior-posterior GRFs across different speeds and slopes.
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