Results 71 to 80 of about 2,888 (220)

CFD Simulation and Optimization of Very Low Head Axial Flow Turbine Runner

International Journal of Renewable Energy Development, 2015
The main objective of this work is Computational Fluid Dynamics (CFD) modelling, simulation and optimization of very low head axial flow turbine runner  to be used to drive  a centrifugal pump of turbine-driven pump. The ultimate goal of the optimization
Yohannis Mitiku Tobo, A. Venkata Ramayya, Getachew Shunki Tibba   +2 more
doaj   +1 more source

Flow‐controlled expiration improves gas exchange in anaesthetised horses undergoing orthopaedic surgery

Equine Veterinary Journal, EarlyView.
Abstract Background Flow‐controlled expiration (FLEX) has been shown to significantly enhance oxygenation in horses under laboratory conditions. Objective This study aims to corroborate these findings by evaluating the effects of FLEX on gas exchange in a randomised clinical trial involving a large population of clinical horses undergoing orthopaedic ...
Klaus Hopster, Joao Henrique Neves Soares, David Levine, Kyla Ortved, Bernd Driessen, Joaquin Araos   +5 more
wiley   +1 more source

Parametric Design of an Ultrahigh-Head Pump-Turbine Runner Based on Multiobjective Optimization

Energies, 2017
Pumped hydro energy storage (PHES) is currently the only proven large-scale energy storage technology. Frequent changes between pump and turbine operations pose significant challenges in the design of a pump-turbine runner with high efficiency and ...
Linhai Liu, Baoshan Zhu, Li Bai, Xiaobing Liu, Yue Zhao   +4 more
doaj   +1 more source

A Call to Industry: Unearthing Synergies in Subsurface Storage Technologies

Greenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Subsurface storage technologies (SSTs), including geological CO2 sequestration, underground hydrogen storage, compressed‑air energy storage and thermal energy storage, are emerging as a scalable route for industry to achieve the terawatt‑hour storage flexibility and permanent carbon removal that evolving energy systems demand.
Julien Mouli‐Castillo, Hanna M. Breunig, Curtis M. Oldenburg   +2 more
wiley   +1 more source

Systematic analysis on the energy loss in pump-turbines

Advances in Mechanical Engineering
The pump-turbine is a key component in pumped-storage power stations, operating under complex conditions. RANS (Reynolds-Averaged Navier-Stokes) is commonly used for numerical simulations, but the differences among various RANS models under different ...
Miao Guo, Zhiheng Wang, Yan Shen, Ruixiang Song, Xuelin Tang, Xiaoqin Li   +5 more
doaj   +1 more source

Psychological responses to interval and continuous exercise in people living with HIV: A single‐blind, counterbalanced, crossover study

HIV Medicine, EarlyView.
Abstract Aim This study compared acute psychological responses to a single session of low‐volume high‐intensity interval exercise (HIIE‐LV), high‐volume high‐intensity interval exercise (HIIE‐HV), and moderate‐intensity continuous exercise (MICE) in people living with HIV, and healthy controls using a randomized, counterbalanced crossover design ...
Phelipe Wilde, Victor S. de Queiros, Jason R. Jaggers, Angelo Sabag, Júlio M. Alves, Elaine Fernandes, Roberto F. C. Rocha, Paulo F. de Almeida‐Neto, Ronaldo Vagner Thomatieli‐Santos, Paulo Moreira Silva Dantas   +9 more
wiley   +1 more source

Dynamic Capabilities as Drivers of Circular Business Models: Exploring Direct and Indirect Relationships

Journal of Product Innovation Management, EarlyView.
ABSTRACT Academic Summary Despite the urgent need for a circular economy, firms' transition from linear to circular business models (CBMs) remains slow. While previous research suggests that dynamic capabilities are the key drivers of this transition, it assumes a direct link, overlooking that these capabilities can facilitate change but do not ...
Jörn Block, Thomas Clauss, Matheus Franco, Timo Lemcke, Hubert Speth   +4 more
wiley   +1 more source

Influence of Chronotype on Cycling Performance in Simulated 20‐km Time Trials—A Pilot Study

Journal of Sleep Research, EarlyView.
Evening‐type athletes show improved cycling performance later in the day, whilst morning types peak earlier. These differences appear linked to variations in mental readiness and sleepiness, highlighting the importance of considering chronotype in performance planning.
Sabrina Forster, Sascha Schwindling, Chris Abbiss, Fabienne Döringer, Andreas Klütsch, Anne Hecksteden, Tim Meyer   +6 more
wiley   +1 more source

Export controls and the energy transition: Aligning security and sustainability

Review of European, Comparative &International Environmental Law, EarlyView.
Abstract This article examines how the accelerating use of export controls, once motivated by narrow security interests, can now affect the pace and success of the global energy transition. As strategic rivalry intensifies among the US, the EU and China, export controls increasingly target access to critical and emerging technologies such as advanced ...
Olga Hrynkiv
wiley   +1 more source

Review of Water Supply, Treatment and Distribution: Overcoming Challenges for Sustainable Management

Water and Environment Journal, EarlyView.
ABSTRACT Water management faces increasing challenges driven by population growth, accelerated urbanization and climate change, demanding integrated and sustainable approaches to ensure the preservation of water resources. Water scarcity and rising demand intensify the vulnerability of various regions, threatening both water supply and environmental ...
André Linneo Tocchetto, Heloisa Serafim Kuakoski, Fernando Henrique Lermen, Sandro Deretti, Murillo Vetroni Barros, Gustavo de Souza Matias   +5 more
wiley   +1 more source