Results 1 to 10 of about 18,851 (214)

Nonlinear control for core power of pressurized water nuclear reactors using constant axial offset strategy

Nuclear Engineering and Technology, 2015
One of the most important operations in nuclear power plants is load following, in which an imbalance of axial power distribution induces xenon oscillations. These oscillations must be maintained within acceptable limits otherwise the nuclear power plant
Gholam Reza Ansarifar, Saeed Saadatzi
doaj   +4 more sources

Control of the axial offset in a nuclear reactor at power maneuvering [PDF]

Trudy Odesskogo Politehničeskogo Universiteta, 2014
High reliability and security of power unit are basic requirements when the power unit maneuvering mode operation. The reactor stability under disturbances both at steady load and maneuvering load embodies the guarantees of power unit safe and reliable ...
Maksim V. Maksimov, Nickolay F. Kanazirskyi, Evgenia O. Kokol   +2 more
doaj   +8 more sources

Modeling and validation of crutch-supported exoskeleton gait using a double-inverted pendulum approach [PDF]

Journal of NeuroEngineering and Rehabilitation
Purpose Exoskeleton-assisted walking for individuals with paraplegia presents unique biomechanical challenges due to minimal lower-limb actuation and substantial reliance on upper-body support via crutches.
Reza Norouzzadeh, Saeed Behzadipour, Abolfazl Mohebbi, Matteo Lancini   +3 more
doaj   +2 more sources

Design and Implementation of a Three-Segment Tendon-Driven Continuum Robot with Variable Stiffness for Manipulation in Confined Spaces [PDF]

Biomimetics
Continuum robots (CRs) exhibit high compliance and environmental adaptability in confined, tortuous spaces, yet their inherent low stiffness and load capacity limit performance in precise positioning and stable support tasks.
Zhixuan Weng, Liansen Sha, Yufei Chen, Bingyu Fan, Lan Li, Bin Liu   +5 more
doaj   +2 more sources

Analysis of the effect of stabilizer configuration on reamer vibration suppression [PDF]

Science Progress
Downhole severe vibration of reamers while drilling is a critical bottleneck restricting drilling safety and efficiency. Existing studies often neglect the coupled effects of cutter dynamic wear on vibration and lack systematic quantitative analysis of ...
Fusheng Yu, Yuchun Kuang, Bin Li
doaj   +2 more sources

Multipoint kinetics model with power reactivity defect for the axial offset control in the VVER-1200 nuclear reactor during the load following mode of operation

Глобальная ядерная безопасность
This article proposes the multipoint kinetics model consisting with different number of point kinetics model (two points, four points, six points, eight points, ten points) in the axial direction for the VVER-1200 nuclear reactor.
S. S. Pravosud, Ya. O. Yakubov, V. A. Susakin   +2 more
doaj   +2 more sources

Short-term exposure to cyan light attenuates myopigenic effects of hyperopic defocus on ocular biometry in humans [PDF]

Scientific Reports
This study investigated whether short-term exposure to cyan light can inhibit axial elongation and choroidal thinning induced by myopigenic hyperopic defocus in humans.
Azfira Hussain, Eleonore Pic, Konogan Baranton, Pascale Lacan, Giovanni Diana, Nicola S Anstice, Aarti Gulyani, Montserrat Burgos, Ranjay Chakraborty   +8 more
doaj   +2 more sources

Automated system for control of VVER-1000 fuel properties considering fuel cladding damage parameter. [PDF]

Trudy Odesskogo Politehničeskogo Universiteta, 2018
An automated system for control of VVER-1000 reactor fuel properties considering fuel element cladding damage parameter, fuel burnup and axial offset has been proposed.
Сергій Миколайович Пелих, Максим Олександрович Фролов, Артем Володимирович Наливайко, Хуийю Чжоу   +3 more
doaj   +6 more sources

Axial offset as measure of stability of light water nuclear reactor during capacity maneuvering

Trudy Odesskogo Politehničeskogo Universiteta, 2015
High reliability and security of power unit are required during operation of power unit while maneuvering. They depend on the stability of reactor when transition from one power level to another. The axial offset is a quantitative measure of the reactor
Марк В. Нiкольский
doaj   +7 more sources

Experimental and Numerical Analysis of Leakage Characteristics of Proportional Directional Valve [PDF]

MATEC Web of Conferences, 2022
This article deals with the experimental and numerical analysis of the leakage characteristics of the proportional directional valve. These characteristics describe the flow through the directional valve in the region of the center position of the spool ...
Ledvoň Marian, Hružík Lumír, Bureček Adam, Dýrr Filip   +3 more
doaj   +1 more source