Results 61 to 70 of about 354,081 (248)

Design and Verification Testing Of Balance Piston for High-Viscosity Multiphase Pumps [PDF]

open access: yes, 2018
LectureOneSubsea was awarded a project involving the development and testing of a HighBoost multiphase pump for boosting unprocessed multiphase well streams with liquid viscosities up to 800 centipoise (cP).
Ekeberg, Ina   +6 more
core   +1 more source

Patient‐Mounted Neuro Optical Coherence Tomography for Targeted Minimally Invasive Micro‐Resolution Volumetric Imaging in Brain In Vivo

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Herein, a patient‐mounted neuro optical coherence tomography system that integrates a 5 degrees‐of‐freedom skull‐mounted robot (Skullbot) with a 0.6 mm neuroendoscope for targeted, minimally invasive deep brain imaging, is developed. The system offers high‐resolution imaging with precise deployment, demonstrated through successful tumor imaging in a ...
Chao Xu   +7 more
wiley   +1 more source

Flow pulsation reduction of a single-piston piezoelectric pump based on elastic cavity group and unloading valve

open access: yesAdvances in Mechanical Engineering, 2021
A piston piezoelectric (PZT) pump has many advantages for the use of light actuators. How to deal with the contradiction between the piston amount and oil delivery quality is an essence when designing the pump.
Bin Wang, Nanyue Xu, Rongfei Yang
doaj   +1 more source

CFD Analysis of an Axial Piston Pump

open access: yes, 2023
En el ámbito de la Oleohidráulica, las bombas de pistón poseen los diseños más sofisticados, de hecho, las bombas de pistones son las únicos capaces de trabajar a altas presiones, además de poseer el mejor rendimiento de todo el grupo de bombas existentes.
openaire   +3 more sources

The effect of piston bowl temperature on diesel exhaust emissions [PDF]

open access: yes, 2005
In modern, high-speed, direct injection diesel engines for passenger vehicles, there is extensive impingement of the fuel sprays on to the piston bowl walls.
Ladommatos, N, Zhao, H, Xiao, Z
core  

Three‐dimensional geometric morphometric analysis of diaphragmatic dome motion in COPD patients

open access: yesThe Anatomical Record, EarlyView.
Abstract Diaphragmatic dysfunction is a hallmark of chronic obstructive pulmonary disease (COPD), especially in emphysema, where hyperinflation alters diaphragm geometry and impairs inspiratory mechanics. However, quantitative three‐dimensional (3D) assessments of diaphragmatic dome shape and motion across COPD phenotypes are limited.
José M. López‐Rey   +5 more
wiley   +1 more source

Sealing Performance of Bionic Striped Mud Pump Piston

open access: yesAdvances in Materials Science and Engineering, 2019
The mud pump piston is a key part for providing mud circulation, but its sealing performance often fails under complex working conditions, which shorten its service life.
Qian Cong   +3 more
doaj   +1 more source

Low‐Field MRI as a Multiparametric Tool for Large Engineered Tissue Characterization

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT Advances in 3D bioprinting have enabled the fabrication of large and complex engineered tissues, but their increasing size demands non‐invasive tools for monitoring structure, maturation, and perfusion. Magnetic Resonance Imaging (MRI) offers unique multiparametric capabilities, yet high‐field systems remain costly and inaccessible for most ...
Yilbert Gimenez   +8 more
wiley   +1 more source

Impact of Trace Water on the Macroscopic Activity of Commercial Ammonia Cracking Catalysts Under Process‐Relevant Conditions

open access: yesChemie Ingenieur Technik, EarlyView.
This study evaluates how small water impurities—typical in ammonia cracking feedstock—affect catalyst performance at elevated pressures and temperatures. By decoupling permanent degradation from reversible inhibition, the findings highlight trace water as a significant factor for reliable catalyst screening and industrial ammonia cracking scale‐up ...
Bruno V. P. Lago   +6 more
wiley   +1 more source

平衡式径向柱塞泵的设计

open access: yesJixie chuandong, 2007
The new theoretic analysis and design on constant current piston pump are brought out.According to the move situation of piston pump,the essential characters to realize the moving speed curve without delivery microseism are expounded,the usual constant ...
李岚
doaj  

Home - About - Disclaimer - Privacy