Results 41 to 50 of about 1,638,848 (302)

Retrieving Ocean Surface Wind Speeds in Real Time on Spaceborne GNSS-R Receivers: Algorithm and Validation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Based on delay-Doppler maps (DDMs) in raw counts generated by spaceborne global navigation satellite system reflectometry (GNSS-R) receivers, retrieving ocean surface wind speeds is feasible, so several spaceborne GNSS-R missions have been carried out ...
Tongsheng Qiu, Qi Zheng, Xianyi Wang, Feixiong Huang, Junming Xia, Fu Li, Zhuoyan Wang, Yueqiang Sun, Qifei Du, Weihua Bai, Yuerong Cai, Dongwei Wang, Yusen Tian, Shuangshuang Cheng   +13 more
doaj   +1 more source

Variations of the surface characteristics of Ryugu returned samples

Earth, Planets and Space, 2023
Hayabusa2 spacecraft successfully collected rock samples from the surface of C-type near-Earth asteroid 162173 Ryugu through two touchdowns and brought them back to Earth in 2020.
Aiko Nakato, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Akiko Miyazaki, Kana Nagashima, Kentaro Hatakeda, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Jean-Pierre Bibring, Cedric Pilorget, Vincent Hamm, Rosario Brunetto, Lucie Riu, Lionel Lourit, Damien Loizeau, Tania Le Pivert-Jolivet, Guillaume Lequertier, Aurelie Moussi-Soffys, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Sei-ichiro Watanabe, Yuichi Tsuda   +29 more
doaj   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

FEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Abrupt reduction in shipping emission as an inadvertent geoengineering termination shock produces substantial radiative warming

Communications Earth & Environment
Human activities affect the Earth’s climate through modifying the composition of the atmosphere, which then creates radiative forcing that drives climate change.
Tianle Yuan, Hua Song, Lazaros Oreopoulos, Robert Wood, Huisheng Bian, Katherine Breen, Mian Chin, Hongbin Yu, Donifan Barahona, Kerry Meyer, Steven Platnick   +10 more
doaj   +1 more source

Pre-Launch Spectral Calibration of the Absorbed Aerosol Sensor

Sensors, 2023
Spectral calibration consists of the calibration of wavelengths and the measurement of the instrument’s spectral response function (SRF). Unlike conventional slits, the absorbed aerosol sensors (AAS) are used as a slit homogenizer, in which the SRF is ...
Jinghua Mao, Yongmei Wang, Entao Shi, Jinduo Wang   +3 more
doaj   +1 more source

James van Allen and his namesake NASA mission [PDF]

, 2013
In many ways, James A. Van Allen defined and “invented” modern space research. His example showed the way for government-university partners to pursue basic research that also served important national and international goals.
Baker, D. N., Hoxie, V. C., Jaynes, A., Kale, A., Kanekal, S. G., Li, X., Reeves, Geoffrey, Spence, Harlan E.   +7 more
core   +2 more sources

Mechanistic basis for inhibition of the extended‐spectrum β‐lactamase GES‐1 by enmetazobactam and tazobactam

FEBS Letters, EarlyView.
Antimicrobial resistance (AMR) is of huge importance, resulting in over 1 million deaths each year. Here, we describe how a new drug, enmetazobactam, designed to help fight resistant bacterial diseases, inhibits a key enzyme (GES‐1) responsible for AMR. Our data show it is a more potent inhibitor than the related tazobactam, with high‐level computation
Michael Beer, Philip Hinchliffe, Marko Hanževački, Christopher R. Bethel, Catherine L. Tooke, Marc W. Van der Kamp, Krisztina M. Papp‐Wallace, Robert A. Bonomo, Stuart Shapiro, Adrian J. Mulholland, James Spencer   +10 more
wiley   +1 more source

Simulation and Validation of Real-Time UAV-Based GNSS-R Altimetry Across Diverse Landforms

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Accurate measurement of land surface elevation is essential for applications, such as terrain mapping, environmental monitoring, and ecological assessment.
Ziyin Xu, Xianyi Wang, Junming Xia, Zhenhe Zhai, Zhuoyan Wang, Cheng Liu, Yusen Tian, Tongsheng Qiu, Yueqiang Sun, Qifei Du, Weihua Bai, Feixiong Huang, Cong Yin   +12 more
doaj   +1 more source

Novel and unscrutinized immune entities of the zebrafish gut

FEBS Letters, EarlyView.
Understudied cells of the zebrafish immune system include bona fide immune cells and epithelial (‐derived) cells with immune functions. Research focusing on zebrafish cells which demonstrate similarities to mammalian immune cell counterparts may help us understand the pathologies in which they are implicated. Currently available and advanced tools make
Audrey Inge Schytz Andersen‐Civil, Marine Mantel, Julia Soh, Serge Mostowy, Sylvia Brugman, Gilles Claude Vanwalleghem   +5 more
wiley   +1 more source

Unraveling the Role of Electron Plateau Distributions in the Power Gap Formation of Chorus Waves: Van Allen Probes Observations

Geophysical Research Letters, 2023
The power gap of chorus waves at ∼0.5fce has been discovered for decades, but its generation mechanism is still under debate. Previous studies have revealed that electron plateau distributions are vitally important for the gap formation.
Huayue Chen, Rui Chen, Xinliang Gao, Quanming Lu, Yangguang Ke, Zhenyu Kong   +5 more
doaj   +1 more source