Results 21 to 30 of about 127,723 (268)
Valves and Valve Gearing [PDF]
Proceedings of the Institution of Automobile Engineers, 1909 n ...
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The Journal of Engineering, 2019 A directional drilling tool control unit whose design is based on servo control of a rotary valve using the roll-stabilised instrumented system approach has been successfully used in oil fields for over 20 years.
Hamid Alturbeh +3 more
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A Mathematical Model of a Valve-Controlled Bioreactor for Platelet Production
Frontiers in Mechanical Engineering, 2022 As blood donor numbers decrease, while demand for platelets increases, hospitals worldwide are becoming increasingly vulnerable to critical platelet shortages. Alternative methods of supplying platelets are therefore required. One approach is to engineer
Helen M. Saville +8 more
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Slovak Journal of Civil Engineering, 2015 The contribution aims to investigate the effect of the decreased thermal losses of an apartment building due to the thermal insulation of opaque external building constructions and the replacement of transparent constructions. It emphasizes the effect of
Kurčová Mária
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Design of emergency breakaway device for helicopter hovering refuelling
The Journal of Engineering, 2020 In the helicopter hover refuelling system, the emergency breakaway device is an important component to ensure the safety of the helicopter. It requires automatic disconnection and sealing of the pipeline under the tension of 1700–2000 N.
Min-Quan Yu, Yu-Liang Yang, Hai-Tao Wang
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Valve-in-Valve Replacement Using a Sutureless Aortic Valve [PDF]
American Journal of Case Reports, 2016 BACKGROUND We present a unique case of a 61-year-old female patient with homograft deterioration after redo surgery for prosthetic valve endocarditis with root abscess. CASE REPORT The first operation was performed for type A dissection with root, arch, and elephant trunk replacement of the thoracic aorta.
Dohmen, Pascal M. +4 more
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Valve-in-valve transcatheter mitral valve replacement procedure in prosthetic valve stenosis
IHJ Cardiovascular Case Reports (CVCR), 2023 A patient presented with acute respiratory failure and shock due to severe prosthetic mitral valve stenosis. A valve-in-valve transcatheter mitral valve replacement procedure was performed via the transeptal approach due to his high-risk presentation with good results.
Mridul Bansal +3 more
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The Journal of Engineering, 2020 The kidney-shaped holes variable four-port hydraulic transformer of inlet and outlet equal flow is proposed, such as the theory, the flow of port A and port B is the same and equivalent to a hydraulic motor. The flow of ports O and T is the same, and the
Lianquan Zhou +3 more
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Fully-Printable Soft Actuator with Variable Stiffness by Phase Transition and Hydraulic Regulations
Actuators, 2021 Actuators with variable stiffness have vast potential in the field of compliant robotics. Morphological shape changes in the actuators are possible, while they retain their structural strength.
Tingchen Liao +4 more
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Study on overvoltage of hybrid LCC-VSC-HVDC transmission
The Journal of Engineering, 2018 Hybrid line commutation converter-voltage-source converter high-voltage direct current transmission (LCC-VSC-HVDC) power transmission has unique technical advantages, but its overvoltage study is not sufficient at present.
Dizhen Xu +4 more
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