Results 71 to 80 of about 304,786 (306)

Planetary Gearbox Vibration Signal Characteristics Analysis and Fault Diagnosis

Shock and Vibration, 2015
Planetary gearboxes are widely used in helicopters, wind turbines, mining machinery, and so forth. The structure and motion type of a planetary gearbox are more complex in comparison with a fixed-shaft one, which makes condition monitoring and fault ...
Qiang Miao, Qinghua Zhou
doaj   +1 more source

Tectonics and volcanisms of Mars [PDF]

Televised images of Mars transmitted from interplanetary stations are used to develop a theory of the structure and development of the planet. Crater chronology, the structure of planetary bodies in the Earth group, and a comparison of the Earth ...
Kats, Y. G., Kozlov, V. V., Kuznetsov, Y. Y., Sulidi-Kondratev, Y. D.   +3 more
core   +1 more source

The Ionization Structure of Planetary Nebulae [PDF]

Symposium - International Astronomical Union, 1993
Ground-based and satellite spectrophotometric observations of emission-line intensities over the spectral range 1400–7200 Å have been made in 5 or more positions in a total of 9 planetary nebulae.
openaire   +1 more source

Porosity Engineering of MXene Architectures: Toward High‐Performance Aqueous Electrochemical Energy Storage

Advanced Materials, EarlyView.
This review systematically summarizes recent advances in porosity engineering of MXenes, with a focused discussion on their structure‐governed energy storage properties. A critical analysis of structure–property relationships is presented across alkali‐ion batteries, multivalent‐ion batteries, and supercapacitors.
Shude Liu, Jieming Chen, Xue Peng, Huilin Zhang, Ling Kang, Ming Ma, Zhaoling Li, Yusuke Yamauchi, Bin Ding   +8 more
wiley   +1 more source

Modeling and Dynamics Analysis Belt Drive in Planetary Transmission System

Jixie chuandong, 2015
For the problem of planetary transmission system that the complex system structure in the course of using,high manufacture precision and limitations strong during long-distance power transmission process.According to the traditional characteristics of ...
Qi Xuemei
doaj  

Phase-Space Structure for Narrow Planetary Rings

, 2004
17 pages, 6 low-resolution ps figures (some in colour)
Benet, Luis, Merlo, Olivier
openaire   +3 more sources

Elastomeric Micro‐Balloons for Remote Control of Cerebral Blood Flow and Real‐Time In vivo Imaging of Rodent Brain Response to Hypoperfusion

Advanced Materials, EarlyView.
This study reports the fabrication of MRI‐compatible elastomeric micro‐balloons via a multi‐step bubble casting process, where the monolithic elastomeric wall is selectively stiffened for reversible and controlled inflation and elasticity, depending on the target vessels for graded occlusion of cerebral arteries.
Jong Bin Kim, Jinghui Wang, Yinding Chi, Jingxian Wu, Alicia Ng, Guanda Qiao, Honglin Tan, Miroslaw Janowski, Piotr Walczak, Yajie Liang, Shu Yang   +10 more
wiley   +1 more source

Parametric Design and Motion Simulation Analysis of Non-circular Gear Planetary Gear Train

Jixie chuandong, 2021
Non-circular gear planetary gear train is the core component of non-circular gear hydraulic motor， and its pitch curve design is the key to the overall structure design.
Yongping Liu, Xingwen Fu, Yongqiao Wei, Dawei Li   +3 more
doaj  

Planetary origin, evolution, and structure [PDF]

Three areas of recent and ongoing research are presented. The first area is giant planet heatflows. Conventional wisdom attributes the heatflow of the giant planets to the gradual loss of primordial heat, except in the case of Saturn where helium ...
Stevenson, David J.
core   +1 more source

Formation and composition of planets around very low mass stars

, 2016
The recent detection of planets around very low mass stars raises the question of the formation, composition and potential habitability of these objects.
Alibert, Yann, Benz, Willy
core   +1 more source