Results 31 to 40 of about 182,049 (317)
The analysis of the main directions for reducing the intensity of mass flows of the working fluid through leaks in the working chamber of a piston long-stroke low-speed compressor stage [PDF]
Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"The working processes and integral characteristics of piston long-stroke low-speed compressor stages are considered. Well-known technologies for increasing the feed rate are considered as objects of comparison: selection of the main dimensions and ...
V. L. Yusha +2 more
doaj +1 more source
Two-phase discharge flow prediction in safety valves
, 2012 Safety Relief Valves (SRV) are necessary elements in the protection of any pressurised system and the prediction of the expected discharge flows is an important consideration for the valve sizing to ensure that rupture pressures do not occur.
Elmayyah, Wael, Dempster, William
core +1 more source
Timely Management of Obstructive Prosthetic Valve Thrombosis
JACC: Case Reports, 2019 Obstructive bioprosthetic valve thrombosis is associated with hemodynamic compromise, and evidence on management with fibrinolysis is limited. Echocardiography is required to assess thrombus size and its effects on valve gradients, area, and leaflet ...
Elona Rrapo Kaso, MD +4 more
doaj +1 more source
Determining the Optimal Number of Pistons for Offshore Digital Winch Drives
Energies, 2023 In offshore winch drive applications, determining the required number of pistons in digital displacement motors is critical for minimizing torque ripples.
Thomas Farsakoglou +3 more
doaj +1 more source
Study on the effect of the pressure characteristics of the cone throttle on the cavitation
The Journal of Engineering, 2018 According to the cone-type throttle valve is prone to cavitation, resulting in the reduction in the performance of the cone throttle valve. Here, a visual experimental platform for hydraulic cavitation is built, and the cavitation number of the conical ...
Jian Zhang +3 more
doaj +1 more source
Transseptal Mitral Valve-in-Valve-in-Valve
CASE[Figure: see text]
Blanaid Canavan +6 more
openaire +3 more sources
Delayed Time to Peak Velocity Is Useful for Detecting Severe Aortic Stenosis
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2016 BackgroundTime to peak velocity (TPV) is an echocardiographic variable that can be easily measured and reflects a late peaking murmur, a classic physical finding suggesting severe aortic stenosis (AS).
Daisuke Kamimura +7 more
doaj +1 more source
Valve-in-Valve Transcatheter Aortic Valve Implantation for Degenerated Bioprosthetic Heart Valves
JACC: Cardiovascular Interventions, 2011 We sought to analyze outcomes of patients with degenerated surgically implanted bioprosthetic heart valves undergoing valve-in-valve (viv) transcatheter aortic valve implantation (TAVI).Redo cardiac surgery for degenerated bioprosthetic heart valves is associated with increased risks, particular in elderly patients with comorbidities.
Eggebrecht, Holger +15 more
openaire +4 more sources
Analysis of proportional valve flow field in common rail system
The Journal of Engineering, 2020 A certain type of proportional valve has been optimised in design by adding a damping hole in its structure, which solves the problem of pressure rise in the fuel chamber due to gap leakage when closing.
Li Yazhou +6 more
doaj +1 more source
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source