Results 41 to 50 of about 4,918 (242)

Deuterium content of the Venus atmosphere [PDF]

Nature, 1989
The abundance of deuterium in the atmosphere of Venus is an important clue to the role of water in the planet's history, because ordinary and deuterated water escape the atmosphere at different rates. The high-resolution mode of the IUE was used to measure hydrogen Lyman-alpha emission from Venus, but only an upper limit on deuterium Lyman-alpha ...
Bertaux, Jean-Loup, Clarke, John T.
openaire   +2 more sources

Robotic Materials With Bioinspired Microstructures for High Sensitivity and Fast Actuation

Advanced Science, EarlyView.
In the review paper, design rationale and approaches for bioinspired sensors and actuators in robotics applications are presented. These bioinspired microstructure strategies implemented in both can improve the performance in several ways. Also, recent ideas and innovations that embed robotic materials with logic and computation with it are part of the
Sakshi Sakshi, Rohit Pratyush Behera, Hongyu Zhou, Yifan Wang, Hortense Le Ferrand   +4 more
wiley   +1 more source

Temporal Stretch‐Induced Nuclear Mechanosensing Coordinates Early Chromatin Accessibility and Genome Protection

Advanced Science, EarlyView.
Cyclic stretching of fibroblasts triggers coordinated nuclear mechanosensing events, including calcium ion release, perinuclear actin assembly, emerin translocation, and H3K9me3 loss, increasing chromatin accessibility for specific genes related to mechanotransduction and repair.
Hye‐Won Shim, Ji‐Young Yoon, Hwalim Lee, Shanika Karunasagara, Cheng Ji Li, Yongdae Shin, Sukbum Hong, Dong‐Joon Lee, Jung‐Hwan Lee, Kam W. Leong, Hae‐Won Kim   +10 more
wiley   +1 more source

Predicting CO Cameron‐Band Auroral Emission at Venus Using VEx Electron Observations

Geophysical Research Letters
Various types of auroral emissions have been observed at (partially) magnetized planets (e.g., Earth, Jupiter, and Mars). Auroral emissions have also been observed at Venus, an unmagnetized planet, by the Pioneer Venus Orbiter (PVO) and ground‐based ...
Shaosui Xu, Rudy A. Frahm, Yingjuan Ma, David L. Mitchell, Janet G. Luhmann, Jean‐Claude Gérard, Lauriane Soret, Robert J. Lillis   +7 more
doaj   +1 more source

Soybean Auxin Transporter PIN3 Regulates Nitrate Acquisition to Improve Nitrogen Use and Seed Traits

Advanced Science, EarlyView.
Xu et al. discovers that switching off auxin transporters in soybean, PIN3a and PIN3b, disrupts auxin flow; this triggers ARF‐STF3/4 signal cascade to activate the nitrate importer NPF2.13 and soil nitrogen acquisition. Multi‐year field trials show edited soybeans maintain yield with higher oil content, offering a potential genetic route to improve ...
Huifang Xu, Shiyu Huang, Jie Wang, Tian Wang, Qingqing Han, Kexin Wu, Zhen Gao, Xiaolei Shi, Tianli Tu, Ming Wang, Laimei Huang, Jiaomei Chen, Yunqi Liu, Yumei Zhang, Guoqiang Lin, Zhichang Chen, Xu Chen   +16 more
wiley   +1 more source

Approaches for Retrieving Sulfur Species Abundances from Dual X–Ka-band Radio Occultations of Venus with EnVision and VERITAS

The Planetary Science Journal, 2023
The EnVision and VERITAS missions to Venus will fly with X- and Ka- band telecommunications channels, which can be used to conduct radio occultation studies of Venus’ atmosphere.
Alex B. Akins, Tatiana M. Bocanegra-Bahamón, Kuo-Nung Wang, Panagiotis Vergados, Chi O. Ao, Sami W. Asmar, Robert A. Preston   +6 more
doaj   +1 more source

Plant Robotics for Sustainable and Environmentally Friendly Robots: Insights from Actuation Characteristics

Advanced Science, EarlyView.
Plants are promising materials for building sustainable and eco‐friendly robots due to their inherent multifunctionality, with actuation playing a crucial role. This article focuses on the physical movements of plants and, from the perspective of actuation characteristics, explores representative plant species and their behaviors, the current state of ...
Kazuya Murakami, Misao Sato, Yu Ikeda, Tatsuhiro Horii, Yukari Nagatoshi, Miki Fujita, Toshinori Fujie, Yasunari Fujita, Jun Shintake   +8 more
wiley   +1 more source

OCS2 Isomers in the Venusian Atmospheric Chemistry: Spectroscopic Characterization and Photochemistry

The Astrophysical Journal
The atmosphere of Venus exhibits absorption in the 300–500 nm wavelength range, which is driven by unknown chemical processes. In our study, we explore electronic transitions in molecules that may exist in the Venusian atmosphere, specifically focusing ...
Tarek Trabelsi, Joseph S. Francisco
doaj   +1 more source

Prolonged silicon carbide integrated circuit operation in Venus surface atmospheric conditions

AIP Advances, 2016
The prolonged operation of semiconductor integrated circuits (ICs) needed for long-duration exploration of the surface of Venus has proven insurmountably challenging to date due to the ∼ 460 °C, ∼ 9.4 MPa caustic environment.
Philip G. Neudeck, Roger D. Meredith, Liangyu Chen, David J. Spry, Leah M. Nakley, Gary W. Hunter   +5 more
doaj   +1 more source

ADA2 Forms Nuclear Condensates with GCN5 and ATP‐Citrate Lyase (ACL) to Modulate H3K9 Acetylation at Genes Functioning in Rice Meristems

Advanced Science, EarlyView.
This study unveils a novel GAA (GCN5‐ADA2‐ACL) complex that forms nuclear condensates to boost local acetyl‐CoA, facilitating histone acetylation and gene transcription in rice meristems. The research underscores the role of ADA2's disordered region in complex condensation and ACL's role in acetyl‐CoA production.
Yaping Yue, Tingting Lu, Xiaoyuan Guo, Biao Liu, Shiteng Lv, Heba A. M. Abdalla, Xuelei Lai, Ruihui Zhang, Jianpin Guo, Yu Zhao, Dao‐Xiu Zhou, Shaoli Zhou   +11 more
wiley   +1 more source