Results 41 to 50 of about 3,085 (194)

Optimized Wavy Thermal Radiative Analysis of Electrochemically Ternary Hybrid Nanomaterials Affected by an Induced Magnetic Force: An ANN‐Based Levenberg–Marquardt Backpropagation Approach

Advanced Physics Research, EarlyView.
This diagram illustrates the wavy flow configuration of the model in a Cartesian coordinate system. It represents the heat and mass transfer characteristics of ternary hybrid nanofluids over a vertically wavy surface in the presence of an induced magnetic field and double‐diffusive mixed convection.
Latif Ahmad, Saleem Javed, Umair Khan, Muhammad Iqbal, Syed Modassir Hussain   +4 more
wiley   +1 more source

Structural characteristics analysis of extra–high–head pump–turbine-unit under extreme-pressure working-conditions [PDF]

E3S Web of Conferences
During transient processes in extra–high–head pumped–storage power plants, the prototype pump–turbine-units must be able to withstand sudden changes in water pressure within the delivery system.
Huang Xiaoying, Huang Xingxing, Huang Yanqing, Bi Huili, Xu Buchao, Wang Zhengwei   +5 more
doaj   +1 more source

A Method for Optical Quantification of Local Oxygen Limitations in Multiphase Bioreactors

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Spatial oxygen limitation is a major source of physiological stress and metabolic, scale‐dependent heterogeneity in aerobic bioprocesses. In gas‐liquid stirred tank reactors, oxygen availability is governed by hydrodynamics and mass transfer and is therefore inherently non‐uniform.
Ryan Rautenbach, Katharina Zörner, Jonas Barczyk, Marko Hoffmann, Ralf Takors, Michael Schlüter   +5 more
wiley   +1 more source

Carrion ecology: concepts, interdisciplinary synthesis, and perspectives

Biological Reviews, EarlyView.
ABSTRACT Carrion is a ubiquitous resource in both terrestrial and aquatic ecosystems, yet it has long been overlooked in ecological research. Over the past two decades, studies on carrion and the many organisms that exploit it have flourished, revealing not only wide‐ranging ecological functions but also significance far beyond ecology.
Marcos Moleón, José A. Sánchez‐Zapata, Travis L. DeVault, Wayne M. Getz, Zebensui Morales‐Reyes, Daniel Redondo‐Gómez, Lara Naves‐Alegre, Solange A. Batista‐Nunes, Esther Sebastián‐González, Juan M. Pérez‐García, Kelly A. Waters, Thijs van Overveld, Craig Smith, Nuria Selva, Thomas A. Schlacher, Graeme Ruxton, Jesús Rodríguez, Martina‐M. Quaggiotto, Paula L. Perrig, Norman Owen‐Smith, Thomas M. Newsome, Isabel Navas, Yoshihiro Nakashima, Ana Mateos, Carlos Martínez‐Carrasco, Daniel Martín‐Vega, Berta Martín‐López, Antoni Margalida, Sergio A. Lambertucci, Adam Kane, Kevin Healy, Akane Hashizume, Antonio J. García‐Fernández, José A. Donázar, M. Eric Benbow, James C. Beasley, Philip S. Barton, Kathleen A. Alexander, Eneko Arrondo   +38 more
wiley   +1 more source

Calibration of flow differential pressure coefficients on pump-turbine by thermodynamic method

Energy Informatics
On-line monitoring of flow rate is rather important to evaluate the water consumption of the pump-turbine and the overall efficiency of the pumped storage station.
Wenkui Zhang, Hongyi Xu, Wei Liu, Xinwen Hu, Juan Liu   +4 more
doaj   +1 more source

Research on AC motor pump starting problem of ram air turbine for civil aircraft

Hangkong gongcheng jinzhan
Ram air turbine starting AC motor pump procedure is an important operation after the failure of dual engines in civil aircraft. This procedure is affected by many factors such as temperature, airspeed, altitude, motor input frequency, and hydraulic oil ...
HONG Ye, WANG Bangting, MA Ying, WEI Peikun, PU Chengnan, WANG Fei   +5 more
doaj   +1 more source

Knowledge gaps and research directions in migration ecology for advancing the conservation of migratory songbirds

Biological Reviews, EarlyView.
ABSTRACT Understanding migration ecology is essential for effective conservation of migratory species. To achieve a comprehensive understanding of the ecology of migrating species, it is necessary to study how species react to the complex interplay of intrinsic and extrinsic conditions when optimizing their migratory journey in terms of survival ...
Daniel A. F. Bloche, Heiko Schmaljohann, Nir Sapir   +2 more
wiley   +1 more source

The Use of Renewable Energy in Prominent City Buildings: A Diffusion Study on Top European Football Organizations

Business Strategy and the Environment, EarlyView.
ABSTRACT The present study applied the diffusion of innovation theory to investigate the rate of diffusion of renewable energy sources used by Europe's top professional football stadiums and the relationship with carbon neutrality. A discrete diffusion model estimated the diffusion of renewable energy to saturation, and a multivariate logistic ...
Chad S. Seifried, Liz Wanless, Timothy Kellison   +2 more
wiley   +1 more source

Numerical Predictions of Pressure Fluctuations in a Model Pump Turbine with Small Guide Vane Opening based on Partial Averaged Navier Stokes Approach

Journal of Applied Fluid Mechanics, 2016
Comparing with conventional hydraulic turbine (e.g. Francis turbine), pump turbine shows significant unstable characteristics because its design is a compromise between a pump and a turbine.
J. T. Liu, Yulin Wu, Yong Li
doaj  

Hydraulic Optimization of Two-Way Counter-rotating Axial Flow Pump Turbine

Frontiers in Energy Research, 2020
The two-way counter-rotation technology is mainly applied to the tidal power station. In this paper, the hydrodynamic optimization of the two-way counter-rotating axial-flow pump turbine is carried out.
Wang Xiuli, Lin Bin, Li Yang, Zhang Yan, Zhu Rongsheng, Long Yun, Fu Qiang   +6 more
doaj   +1 more source