Results 91 to 100 of about 10,593 (242)
Wind, Wave, and Tidal Energy Without Power Conditioning [PDF]
Most present wind, wave, and tidal energy systems require expensive power conditioning systems that reduce overall efficiency. This new design eliminates power conditioning all, or nearly all, of the time.
Jones, Jack A.
core +1 more source
Experimental Physiology, EarlyView.Abstract Manned space exploration to distant destinations, including Mars, continues to be an aspiration of humankind. Space travel does, however, present many challenges to the body, amongst which adaptation to microgravity is perhaps the largest. For instance, both short and long manned spaceflight missions have shown substantial deleterious effects ...
Gerard McMahon +2 more
wiley +1 more source
Rotating and positive-displacement pumps for low-thrust rocket engines. Volume 1: Pump Evaluation and design [PDF]
Rotating and positive displacement pumps of various types were studied for pumping liquid fluorine for low-thrust, high-performance rocket engines. Included in the analysis were: centrifugal, pitot, Barske, Tesla, drag, gear, vane, axial piston, radial ...
Csomor, A., Macgregor, C.
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Recent Advances in Design of Low Cost Film Concentrator and Low Pressure Free Piston Stirling Engines for Solar Power [PDF]
, 1984 The free piston Stirling-linear alternator was shown to be scalable to power levels of tens of kilowatts in a form which is simple, efficient, long lived and relatively inexpensive.
Beale, W. +2 more
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Experimental Physiology, EarlyView.Abstract Central arterial stiffening, particularly of the proximal aorta, is increasingly recognised as a pivotal contributor to cardiovascular disease, dementia, and mild cognitive impairment. Loss of Windkessel function amplifies pulsatile pressure, reduces diastolic perfusion and accelerates microvascular damage in the brain.
Jun Sugawara, Hirofumi Tanaka
wiley +1 more source
GRAPHICAL MODELLING AND STUDIES ON HYDRAULIC PUMP PARAMETERS
Journal of Industrial Design and Engineering Graphics, 2021 Hydraulic drive can be defined as a set of technical functions through which the transmission of mechanical energy is carried out, from a driver element to a driven one, using a hydraulic environment.
Nicusor Baroiu +1 more
doaj
Study on the Thermohydrodynamic Friction Characteristics of Surface-Textured Valve Plate of Axial Piston Pumps. [PDF]
Micromachines (Basel), 2022 Wang Z, Sun L, Han B, Wang X, Ge Z.
europepmc +1 more source
Experimental Physiology, EarlyView.Abstract We evaluated the feasibility and efficacy of a 2‐week training programme comprising resistance vibration exercise (RVE) without and with artificial gravity (AG). Participants (n = 24) were divided into three groups: (i) URVE: upright loaded squat exercise; (ii) HRVE: horizontal loaded squat exercise; and (iii) AGRVE: loaded squat exercise ...
Igor B. Mekjavic +9 more
wiley +1 more source
Piston Wear Detection and Feature Selection Based on Vibration Signals Using the Improved Spare Support Vector Machine for Axial Piston Pumps. [PDF]
Materials (Basel), 2022 Xia S, Xia Y, Xiang J.
europepmc +1 more source
A Mathematical Model for Two‐Phase Flow in Confined Environments: Numerical Solution and Validation
International Journal for Numerical Methods in Fluids, Volume 98, Issue 3, Page 306-320, March 2026.We present a numerical framework based on the Cahn‐Hilliard‐Navier‐Stokes (CHNS) model to simulate biphasic flow in confined environments. After deriving the mathematical model, we develop the weak form of the system of PDEs using a pedagogical approach to enable its implementation in FEniCS.
Giuseppe Sciumè +3 more
wiley +1 more source