Results 31 to 40 of about 2,480,861 (247)

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

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

Selected reasons for pressure pulsation in hydrostatic Systems [PDF]

open access: yes, 2022
W pracy przybliżono wybrane przyczyny pulsacji ciśnienia w układach hydrostatycznych. Wskazano na negatywne skutki tego zjawiska. Podkreślono, że w układach hydrostatycznych z hydrauliczną linią długą (HLD) dochodzić może o amplifikacji amplitud pulsacji
Karpenko, Mykola, Stosiak, Michał
core  

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

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

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

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

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

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

open access: yesFEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Flow Pulsation Characteristic of External Gear Pump and Analysis of Influencing Factor

open access: yesJixie chuandong, 2020
Based on the bench test of oil pump, the influence of pump outlet pressure on flow pulsation of external gear oil pump is analyzed. The results show that the flow pulsation coefficient of the oil pump decreased with the increase of pump outlet pressure ...
Liangyi Shen, Lei Qu, Biao Shen
doaj  

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