Influence of the boundary conditions on the natural frequencies of a Francis turbine [PDF]
Natural frequencies estimation of Francis turbines is of paramount importance in the stage of design in order to avoid vibration and resonance problems especially during transient events.
Bossio, Matias +5 more
core +1 more source
Vegetative propagation using runner plants is an important method to expand the cultivation area for the strawberry (Fragaria × ananassa Duch.).
Chen Liu +4 more
doaj +1 more source
Using Artificial Neural Network to Solve Multi-objective Optimization of Francis Turbine Runner
【Background】 Technical renovation of turbine equipment in hydropower plant has attracted increased attention due to its low investment, quick return and high economic benefit.
WANG Rongtao, LAI Xide, CHEN Xiaoming
doaj +1 more source
Limitations of Modern Diagnostic and Prognostic Systems for a Hydraulic Unit’s Health
Modern diagnostic systems for the hydraulic unit’s health play an important role in ensuring the reliability and safety of the hydroelectric power plant (HPP). However, they cannot provide timely detection of such dangerous operational defects as fatigue
Evgeniia Georgievskaia
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Varied response to mirror gait retraining of gluteus medius control, hip kinematics, pain, and function in 2 female runners with patellofemoral pain. [PDF]
STUDY DESIGN: Case report. BACKGROUND: The underlying mechanism of the changes in running mechanics after gait retraining is presently unknown. This case report assesses changes in muscle coordination and kinematics during treadmill running and step ...
Binkley JM +5 more
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Socketed Axes of the Irish Late Bronze Age: Understanding the Internal Rib Phenomenon
This study explores the possibility that the internal rib commonly recognised inside bronze socketed axes may suggest an entirely different step in the casting process than previously thought. The internal rib, more commonly referred to as a ‘hafting rib’
Terry Runner
doaj
Investigation of a High Head Francis Turbine at Runaway Operating Conditions
Hydraulic turbines exhibit total load rejection during operation because of high fluctuations in the grid parameters. The generator reaches no-load instantly. Consequently, the turbine runner accelerates to high speed, runaway speed, in seconds.
Chirag Trivedi +2 more
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Identification of runner fatigue stages based on inertial sensors and deep learning
Introduction: Running is one of the most popular sports in the world, but it also increases the risk of injury. The purpose of this study was to establish a modeling approach for IMU-based subdivided action pattern evaluation and to investigate the ...
Pengfei Chang +5 more
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The impact of the COVID-19 pandemic on the mood and family relationships of runners
IntroductionThe aim of this study was to analyze the impact of the COVID-19 lockdown on the mood of amateur runners and on their relationships with their partners and families.MethodsAdult runners 18 years or older (N = 260) completed an online survey ...
Anna Vilaregut +4 more
doaj +1 more source
The reliability and operation safety of hydraulic units beyond design lifetime
The issues of reliability and operation safety of power equipment, including hydraulic units of hydropower plants, are becoming more and more relevant with the increasing the service life.
E. V. Georgievskaia
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