Results 81 to 90 of about 2,888 (220)

End Suction Centrifugal Pump Operating in Turbine Mode for Microhydro Applications

Advances in Mechanical Engineering, 2014
This paper reviews the current research works on the end suction centrifugal pump coupled with induction generator running in turbine mode for microhydro application. The information can be used by practicing engineers, researchers, and plant managers to
Mohd Azlan Ismail, Al Khalid Othman, Shahidul Islam, Hushairi Zen   +3 more
doaj   +1 more source

How do physiological networks respond to normobaric hypoxia and isometric exercise?

Experimental Physiology, EarlyView.
Abstract The dynamics of physiological systems are impacted by both exercise and hypoxia. Network models can be used to map the interactions between various physiological components in environmental physiology and exercise using the concepts of information theory.
Danilo Bondi, Cecilia Morandotti, Salvatore Annarumma, Carmen Santangelo, Tiziana Pietrangelo, Stefania Fulle, Vittore Verratti   +6 more
wiley   +1 more source

Effect of hypoxia on muscle activation at equivalent absolute and relative intensity during incremental and constant load exercise to task failure

Experimental Physiology, EarlyView.
Abstract We examined the impact of moderate hypoxia (HYPO) on muscle activation during incremental exercise matched for both absolute and equivalent relative intensity. Fifteen active subjects (10 males, 5 females) completed two ramp incremental test and two step tests in normoxia (NORM; FiO2${F_{{\mathrm{i}}{{\mathrm{O}}_2}}}$ = 0.209) and HYPO (FiO2${
Dania Ibrahim, Youmna Elsayed Hassanein, Nathan E. Townsend   +2 more
wiley   +1 more source

RELIABILITY OF THERMO-MECHANICAL EQUIPMENT IN POWER PLANTS – ELEMENTS WITH HIGH FAILURE R [PDF]

Analele Universităţii "Constantin Brâncuşi" din Târgu Jiu: Seria Inginerie, 2019
Thermal power plants are complex systems with many inter-dependence links and several critical elements that condition the operation of the whole plant. Failure of critical elements such as feed water pump results in a general shut down of the whole unit.
Bogdan Diaconu, Adriana Tudorache, Corina Diana Kaiser   +2 more
doaj  

The Effects of Post‐Activation Performance Enhancement on High Intensity Interval Training: A Comparison of Traditional and Cluster Set Protocols

European Journal of Sport Science, Volume 26, Issue 4, April 2026.
ABSTRACT The present study aimed to examine the effects of post‐activation performance enhancement (PAPE) protocols employing half‐squat exercises, performed using either a traditional set (PAPEtraditionalset) or a cluster set (PAPEclusterset), on peak oxygen uptake (V˙ $\dot{\mathrm{V}}$O2peak), the time spent at ≥ 90% maximal oxygen uptake (V˙ $\dot{\
Merve Cin, Özcan Saygın, Refik Çabuk
wiley   +1 more source

Free‐Breathing, 3D Cardiac Magnetic Resonance Elastography for Myocardial Stiffness Mapping

Magnetic Resonance in Medicine, Volume 95, Issue 4, Page 2356-2369, April 2026.
ABSTRACT Purpose Magnetic resonance elastography (MRE) of the heart has predominantly utilized breath‐held acquisitions with limited anatomic coverage. This work investigates the feasibility of 3D, free‐breathing cardiac MRE. Methods A 3D hybrid radial and EPI acquisition is utilized and combined with retrospective binning of k‐space via physiologic ...
Nolan K. Meyer, Yi Sui, Jessica Magnuson, Phillip J. Rossman, Kevin J. Glaser, Matthew C. Murphy, Armando Manduca, Ian C. Chang, Kiaran P. McGee, Kejal Kantarci, Ekta Kapoor, Philip A. Araoz, Richard L. Ehman, Joshua D. Trzasko, Arvin Arani   +14 more
wiley   +1 more source

Water‐Borne Erosion of Reinforced Polymer Composites: Application to Shallow Offshore Marine Environment

Polymer Composites, Volume 47, Issue 5, Page 4102-4126, 10 March 2026.
Comparison of experimental and model‐predicted erosion rates for carbon fibre‐reinforced polymer (CFRP) and glass fibre‐reinforced polymer (GFRP) under low‐velocity (2 m/s) and at varying angles and sand concentrations (0.0, 0.05, 0.4 g/L). The results demonstrate good agreement between experimental data and model predictions across different erosive ...
Ali Al‐Darraji, Christopher Lagat, Thaneshan Sapanathan, Peter Butt, Ibukun Oluwoye   +4 more
wiley   +1 more source

Numerical Investigation in the Vaned Distributor under Different Guide Vanes Openings of a Pump Turbine in Pump Mode

Journal of Applied Fluid Mechanics, 2016
The performance of a pump turbine in pump mode is of great importance to a pumped storage power plant. In order to obtain the pump characteristics of a pump turbine, 3D steady simulations were carried out by solving rans using different two-equation ...
D. Y. Li, R. Z. Gong, H. J. Wang, Jian Zhang, X. Z. Wei, L. F. Shu   +5 more
doaj  

Achieving Net‐Zero in the Electricity Sector in China by 2050 Considering Environmental and Economic Objectives

Advanced Sustainable Systems, Volume 10, Issue 3, March 2026.
China's pathways to net‐zero electricity by 2050 are evaluated using life cycle environmental and economic assessment across six scenarios. Results show that a renewables‐only grid offers the best overall environmental performance and lowest cost, but increases burdens on metal depletion, land use, and ecotoxicity.
Tingfeng Song, Harish K. Jeswani, Adisa Azapagic   +2 more
wiley   +1 more source

3D Compressible Flow Analysis of an Ultra-High-Head Pumped Storage Unit with Water Conveyance System at Maximum Pumping Head

Energies
Severe pressure pulsations caused by complex flow fields in pumped-storage power stations significantly threaten operational safety and stability. With advances in computational technology, fully three-dimensional simulations coupling pipelines and pump ...
Zhixing Li, Xinbo Li, Xingxing Huang, Tao Li, Meng Liu, Zhengwei Wang   +5 more
doaj   +1 more source