Results 31 to 40 of about 134,037 (330)
The Three-Dimensional Structure of Cassiopeia A [PDF]
, 2009 We used the Spitzer Space Telescope's Infrared Spectrograph to map nearly the entire extent of Cassiopeia A between 5-40 micron. Using infrared and Chandra X-ray Doppler velocity measurements, along with the locations of optical ejecta beyond the forward
Allen, Glenn E. +11 more
core +3 more sources
System study of pneumatic exoskeleton rehabilitation manipulator
The Journal of Engineering, 2018 In this study, biological characteristic of manpower is analysed and then the structural of exoskeleton rehabilitation manipulator is designed base on the thought of modular. First, the overall assembly drawing is drawn by SolidWorks.
Xudong Ma, Ruibo Yuan, Sizhong Fang
doaj +1 more source
The Journal of Engineering, 2018 Comparative investigation on friction and wear properties of SiC, Si(3)N(4), Al(2)O(3), and ZrO(2) lubricated with seawater was carried out on a ring-on-ring contacted tribological test apparatus, and their worn surfaces were observed by an ultra-depth ...
Zhenhua Zhang +4 more
doaj +1 more source
Rekayasa, 2023 The need for electrical energy is very high, but fossil power plants are running low. Consequently, innovations in alternative energy sources are increasing, including sea waves.
Fideryan Axel Pratama +2 more
doaj +1 more source
The Journal of Engineering, 2018 Based on the theories of heat transfer and the method of computational fluid dynamics, a liquid–solid mathematical model of heat transfer of an axial piston hydraulic motor pump is constructed in this study.
Dianrong Gao +5 more
doaj +1 more source
Programming piston displacements for constant flow rate piston pumps with trigonometric transition functions [PDF]
Mechanical Sciences, 2021 An analytical method for programming piston displacements for constant flow rate piston pumps is presented. A total of two trigonometric transition functions are introduced to express the piston velocities during the transition processes, which can ...
Z. Tian, Z. Tian, X. Lin, X. Lin
doaj +1 more source
, 2009 In this paper we study the Casimir force for a piston configuration in $R^3$ with one dimension being slightly curved and the other two infinite. We work for two different cases with this setup.
Casimir H. +6 more
core +2 more sources
Tension Pistons: Amplifying Piston Force Using Fluid‐Induced Tension in Flexible Materials
Advanced Functional Materials, 2019 Pistons are ubiquitous devices used for fluid‐mechanical energy conversion. However, despite this ubiquity and centuries of development, the forces and motions produced by conventional rigid pistons are limited by their design.
Shuguang Li +4 more
semanticscholar +1 more source
Influence of Piston Number on Churning Losses in Axial Piston Pumps
Chinese Journal of Mechanical Engineering, 2022 Raising the rotational speed of an axial piston pump is useful for improving its power density; however, the churning losses of the piston increase significantly with increasing speed, and this reduces the performance and efficiency of the axial piston ...
Ying Li +4 more
doaj +1 more source
An Empirical Model for the Churning Losses Prediction of Fluid Flow Analysis in Axial Piston Pumps
Micromachines, 2021 The manufacturing development of axial piston pumps usually takes the trend of high speed and miniaturization, and increases power density. Axial piston pumps are usually characterized as high speed to improve the power density; thus, high-speed churning
Ying Li, Xing Chen, Hao Luo, Jin Zhang
doaj +1 more source