Results 11 to 20 of about 36,097 (261)

The record‐breaking heat wave of June 2019 in Central Europe

Atmospheric Science Letters, 2020
After being hit by several devastating heat waves in recent years, Europe experienced an exceptionally hot June in 2019 again. This June is the hottest one on record over Central Europe both in a monthly‐mean sense and in terms of the number of extremely
Peiqiang Xu, Lin Wang, Yuyun Liu, Wen Chen, Ping Huang   +4 more
doaj   +1 more source

Contrast analysis between the trajectory of the planetary system and the periodicity of solar activity [PDF]

Annales Geophysicae, 2017
The relationship between the periodic movement of the planetary system and its influence on solar activity is currently a serious topic in research. The kinematic index of the planet juncture index has been developed to find the track and variation of
W. Sun, W. Sun, W. Sun, J. Wang, J. Wang, J. Chen, J. Chen, Y. Wang, G. Yu, X. Xu   +9 more
doaj   +1 more source

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

Machines, 2023
Planetary gear systems have many advantages over other gear systems. Previous studies on its dynamic characteristics mostly used Earth as the reference system, which is inconsistent with the actual working conditions of many planetary gear systems, such ...
Bingwei Gao, Yongkang Wang, Guangbin Yu
doaj   +1 more source

Conceptual Design of Rover’s Mobility System for Ground-Based Model [PDF]

Journal of Astronomy and Space Sciences, 2009
In recent years, lots of studies on the planetary rover systems have been performed around space advanced agencies such as NASA, ESA, JAXA, etc. Among the various technologies for the planetary rover system, the mobility system, navigation algorithm ...
Youn-Kyu Kim, Hae-Dong Kim, Joohee Lee, Eun-Sup Sim, Sangwon Jeon   +4 more
doaj   +1 more source

Fatigue Reliability Design Method for Large Aviation Planetary System Considering the Flexibility of the Ring Gear

Applied Sciences, 2022
As the foundation and core of various heavy aircraft transmission systems, the reliability level of large-scale aviation planetary mechanism restricts the economic affordability and service safety for the aircraft to a great extent.
Ming Li, Yuan Luo, Liyang Xie
doaj   +1 more source

Vibration Reduction Design of Marine Planetary Herringbone Gear Transmission Based on Phase Tuning Theory

Jixie chuandong, 2023
Planetary herringbone gears are increasingly used in the high-power marine transmission system. In order to meet the noise requirements of transmission system of modern ships, the vibration reduction design of planetary herringbone gear transmission ...
Zhao Tianyu, Zou Haoran, Wang Sanmin, Li Zhibin   +3 more
doaj  

E-L₀: Advanced Surface Segmentation of LiDAR Point Clouds in Open-Pit Mine Stepped Terrain

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Ensuring the stability of open-pit mine slopes is crucial for safe and efficient mining operations. To analyze slope stability and assess geological disaster risks, LiDAR point-cloud data are widely used to create high-precision 3-D models.
Tao Chen, Junxiang Tan, Ping Zhou, Gang Hu, Ronghao Yang, Xiubo Wu, Shaoda Li   +6 more
doaj   +1 more source

The cosmochemistry of planetary systems

Nature Reviews Chemistry
Authors' version of our review in Nature Reviews ...
Martin Bizzarro, Anders Johansen, Caroline Dorn   +2 more
openaire   +3 more sources

Design and Research Co-Simulation Platform of Navigation and Dynamics on Planetary Rovers

Xibei Gongye Daxue Xuebao, 2019
The overall design idea of simulation platform of the planetary rover coupling navigation and dynamics is proposed to address the dilemma faced in the design of a navigation control system for Mars and other planetary exploration tasks.

doaj   +1 more source

Addressing Economic Insecurities Can Improve Patient‐Reported Outcomes in Lupus

Arthritis Care &Research, EarlyView.
Objective Economic insecurities, such as food, housing, transportation, and financial challenges, are modifiable risk factors and influence patient‐reported outcomes (PROs) in systemic lupus erythematosus (SLE). We examined the following: (1) associations between economic insecurities and PROs, and (2) the impact of screening and addressing economic ...
Jay Patel, Tripti Singh, Meredith Ingersoll, Shelby Gomez, Amanda Weber, Sarah E. Panzer, Sancia Ferguson, Christie M. Bartels, Shivani Garg   +8 more
wiley   +1 more source