Results 31 to 40 of about 23,488 (225)

A CFD parametric study of geometrical variations on the pressure pulsations and performance characteristics of a centrifugal pump. [PDF]

open access: yes, 2009
Pressure pulsations may be troublesome during the operation and performance of centrifugal pumps. Such pressure pulsations have traditionally been investigated experimentally but numerical analysis techniques allow these effects to be explored. The multi-
Amaral Teixeira, Joao, Spence, R.
core   +1 more source

Effect of the Gap Matching Relation on the Pressure Pulsation Characteristics at Blade’s Surface of the Multiphase Pump

open access: yesMachines, 2022
The pressure pulsation characteristics of the blade’s surface have an impact on the lifespan of the multiphase pump impeller. To explore the influence of the gap matching relation on the pressure pulsation characteristics at blade’s surface of the pump ...
Guangtai Shi   +3 more
doaj   +1 more source

Retinal artery pulsation in raised intraocular pressure, video

open access: yes, 2021
A video demonstrating spontaneous retinal arterial pulsation at the optic nerve head, in a patient with raised intraocular ...
George Berrett (10317533)
core   +1 more source

Air pressure pulsation solid state fermentation of feruloyl esterase by Aspergillus niger

open access: yes, 2009
Air pressure pulsation solid state fermentation (APP-SSF) was applied to produce feruloyl esterase (FAE) by Aspergillus niger. With the optimization of some variables by orthogonal design, the optimal condition obtained was 0.2 MPa (gauge pressure) of ...
Chen, HZ, Chen, H. Z., Zeng, W.
core   +1 more source

Investigation of the Effect of Nozzle on Underwater Detonation Shock Wave and Bubble Pulsation

open access: yesEnergies, 2022
The subject of a gas jet generated by underwater detonation is an important issue in the field of underwater propulsion. The experimental system of underwater detonation is established, which utilizes a high-speed camera to record the morphological ...
Chuanwei Wang   +3 more
doaj   +1 more source

Xanthan Production on Polyurethane Foam and Its Enhancement by Air Pressure Pulsation

open access: yes, 2010
In this study, we evaluated the feasibility of solid-state fermentation (SSF) on polyurethane foam (PUF) for xanthan production. The effects of air pressure pulsation (APP) on biomass accumulation and final xanthan concentration were also studied.
Chen, Hong-zhang   +2 more
core   +1 more source

Investigation of characteristics of discharge pressure pulsation in a twin-screw refrigeration compressor

open access: yes, 2018
In this paper, characteristics of discharge pressure pulsation in a twin-screw refrigeration compressor are investigated. A thermodynamic model is developed and validated using data from a comprehensive experimental study.
Wenqing Chen   +3 more
core   +2 more sources

Effect of wave disturbance on the fluid dynamics of the pump turbine in a seawater pumped storage hydroplant

open access: yesFrontiers in Earth Science, 2023
Compared with conventional pumped-storage hydroplants, seawater pumped-storage hydroplants are constructed in a complex marine environment. The wave disturbance may affect the safety operation of the pump turbine in the seawater pumped hydroplant via ...
Jianyong Hu   +7 more
doaj   +1 more source

Numerical Simulation of Pressure Pulsations in Francis Turbines

open access: yesIOP Conference Series: Earth and Environmental Science, 2012
For more than 150 years, hydraulic power plants have been strongly contributing to energy generation. At present, with the expanding participation of other non-storable renewable energy sources in the electrical market composition, water turbines can importantly contribute to the electrical grid stability and to energy storage.
M V Magnoli, R Schilling
openaire   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy