Results 31 to 40 of about 397,235 (349)

Forming different planetary systems [PDF]

Research in Astronomy and Astrophysics, 2012
27 pages, 2 figures, 1 table, published in "Research in Astron.
Zhou, J. -L., Xie, J. -W., Liu, H. -G., Zhang, H., Sun, Y. -S.   +4 more
openaire   +2 more sources

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

DIVISION III: PLANETARY SYSTEMS SCIENCE [PDF]

Proceedings of the International Astronomical Union, 2008
The meeting was opened by Ted Bowell, president, at 11 am. The 2006 Division III meetings were reviewed by Guy Consolmagno, secretary; as the minutes of those meetings have already been published, they were assumed to be approved.
Edward L. G. Bowell, Karen J. Meech, Iwan P. Williams, Alan P. Boss, Guy J. Consolmagno, Régis Courtin, Julio A. Fernández, Bo Å. S. Gustafson, Walter F. Huebner, Anny-Chantal Levasseur-Regourd, Mikhail Ya. Marov, Michel Mayor, Rita M. Schulz, Pavel Spurný, Giovanni B. Valsecchi, Jun-ichi Watanabe, Iwan P. Williams, Adolf N. Witt   +17 more
openaire   +4 more sources

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  

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

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

A probable ancient nearshore zone in southern Utopia on Mars unveiled from observations at the Zhurong landing area

Scientific Reports
The Chinese Mars rover Zhurong successfully landed in southern Utopia Planitia on Mars in May 2021. Previous research suggested a Hesperian ocean may have existed in the northern lowland on Mars.
Bo Wu, Jie Dong, Yiran Wang, Wei Rao, Zezhou Sun, Sergey Krasilnikov, Zhaojin Li, Zhiyun Tan, Zeyu Chen, Chuang Wang, Mikhail Ivanov, Jiaming Zhu, Wai Chung Liu, Long Chen, Hongliang Li   +14 more
doaj   +1 more source

A New Framework for Generating Indoor 3D Digital Models from Point Clouds

Remote Sensing
Three-dimensional indoor models have wide applications in fields such as indoor navigation, civil engineering, virtual reality, and so on. With the development of LiDAR technology, automatic reconstruction of indoor models from point clouds has gained ...
Xiang Gao, Ronghao Yang, Xuewen Chen, Junxiang Tan, Yan Liu, Zhaohua Wang, Jiahao Tan, Huan Liu   +7 more
doaj   +1 more source

Refined stellar, orbital and planetary parameters of the eccentric HAT-P-2 planetary system [PDF]

, 2009
We present refined parameters for the extrasolar planetary system HAT-P-2 (also known as HD 147506), based on new radial velocity and photometric data. HAT-P-2b is a transiting extrasolar planet that exhibits an eccentric orbit.
Andrew W. Howard, András Pál, Bakos, Bakos, Bakos, Bakos, Bakos, Baraffe, Baraffe, Barbieri, Barnes, Borucki, Brigitta Sipőcz, Charbonneau, Claret, Claret, D'Angelo, David W. Latham, Debra A. Fischer, Demarque, Droege, Fabrycky, Ford, Fortney, Geoffrey W. Marcy, Gilbert A. Esquerdo, Gillon, Gregory W. Henry, Guillermo Torres, Gáspár Á. Bakos, Henry, Hébrard, John A. Johnson, Johns-Krull, Johnson, Kopal, Loeb, Loeillet, Mandel, Naef, Ochsenbein, Perryman, Press, Pál, Pál, Pál, Pál, Pál, Pál, R. Paul Butler, Robert W. Noyes, Shporer, Skrutskie, Sozzetti, Takeda, Valenti, Valenti, van Leeuwen, van Leeuwen, Vogt, Winn, Winn, Winn, Winn, Yi   +64 more
core   +3 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source