Results 81 to 90 of about 858,402 (225)

Localized field‐aligned currents in the polar cap associated with airglow patches

, 2016
Airglow patches have been recently associated with channels of enhanced antisunward ionospheric flows propagating across the polar cap from the dayside to nightside auroral ovals. However, how these flows maintain their localized nature without diffusing
Knudsen, David J.,, Zou, Ying,, Stephan Buchert, Yukitoshi Nishimura, Kazuo Shiokawa, Nicolls, Michael J.,, Shiokawa, Kazuo,, Buchert, Stephan,, Larry R. Lyons, Michael J. Nicolls, Burchill, Johnathan K.,, Chen, Steve,, Ying Zou, Nishimura, Yukitoshi,, Ruohoniemi, J. Michael,, Nishitani, Nozomu,, David J. Knudsen, McWilliams, Kathryn A.,, Lyons, Larry R.,, Johnathan K. Burchill, Nozomu Nishitani, J. Michael Ruohoniemi, Steve Chen, Kathryn A. McWilliams   +23 more
core   +1 more source

Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics

Advanced Science, EarlyView.
This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li, Zhongguo Ren, Yiliang Lin, Xianfeng Xia, Tianlong Li, Kai Fung Chan, Philip Wai Yan Chiu, Wei Peng Yong, Mengmeng Sun   +8 more
wiley   +1 more source

Polar Cap Patches Detected with RISR-N

<p>Database of Polar Cap Patches detected with the North face of the Resolute Bay Incoherent Scatter Radar (RISR-N)</p> <p>This dataset was generated by applying two polar cap patch detection algorithm described to the full RISR-N ...
Lamarche, Leslie, Perry, Gareth, Jonah, Olusegun, Zou, Shasha   +3 more
core   +1 more source

Modeling Polar Cap \u3ci\u3eF\u3c/i\u3e-Region Patches Using Time Varying Convection [PDF]

, 1993
Creation of polar cap F‐region patches are simulated for the first time using two independent physical models of the high latitude ionosphere. The patch formation is achieved by temporally varying the magnetospheric electric ...
Valladares, Cesar E., D. N. Anderson, M. D. Bowline, Decker, D. T., Sheehand, R., D. T. Decker, Heelis, R. A., Schunk, Robert W., R. W. Schunk, R. Sheehan, Sojka, Jan Josef, J. J. Sojka, Anders, D. N., C. E. Valladares, R. A. Heelis, Bowline, M. D.   +15 more
core   +1 more source

The Natural Product Corramycin Acts as a DNA Gyrase Poison and Overcomes Fluoroquinolone Resistance in Mycobacterium tuberculosis

Advanced Science, EarlyView.
Corramycin, a myxobacterial natural product antibiotic, exhibits potent bactericidal activity against multidrug‐resistant Mycobacterium tuberculosis. The compound hijacks bacterial transporters such as BacA and OppABCD to enter the cell and inhibits DNA synthesis through a previously unrecognized mode of DNA gyrase poisoning, locking the enzyme in an ...
Franziska Fries, Jennifer Herrmann, Michael Dal Molin, Yaëlle Wormser, Timo Risch, Yunsheng Gao, Gareth Prosser, Francesca Gubellini, Ariel Mechaly, Joshua B. Wallach, Anthony Castro, Arka Banerjee, Sari Rasheed, Alexander Horn, Mathias Müsken, Michael Kurz, Lindsay Sonnenkalb, Viola Dreyer, Stefan Niemann, Sönke Andres, Dirk Schnappinger, Uli Kazmaier, Norbert Reiling, Rolf Müller, Jan Rybniker, Stéphanie Petrella   +25 more
wiley   +1 more source

A statistical survey of polar cap cold and hot patches in the Southern Hemisphere using a DMSP Satellite

Earth and Planetary Physics
This paper is a statistical survey of Southern Hemisphere cold and hot polar cap patches, in relation to the interplanetary magnetic field (IMF) and ionospheric convection geometry. A total of 11,946 patch events were identified by Defense Meteorological
Duan Zhang, QingHe Zhang, Kjellmar Oksavik, ZanYang Xing, L. R. Lyons, HuiGen Yang, Tong Xu, Marc Hairston, XiangYu Wang, YuZhang Ma, GuoJun Li, Yong Wang, Sheng Lu, Jin Wang   +13 more
doaj   +1 more source

Gestational Hypoxia Disrupts Medial Ganglionic Eminence Progenitor Dynamics and Interneuron Development in Schizophrenia

Advanced Science, EarlyView.
FES‐derived MGE spheroids exhibit progenitor‐stage alterations in developmental trajectory and hypoxia‐responsive transcriptional programs, followed by functional disruption. Gestational hypoxia recapitulates impaired progenitor proliferation, shortened cell‐cycle progression, interneuron developmental abnormalities, and schizophrenia‐like behaviors in
Peiyan Ni, Qiancheng Zhang, Youhui Jiang, Huiying Yao, Chuqing Zhou, Xiaoyi Tian, Shiyingnan Gao, Jun Zhao, Xinyi Ren, Naxin Xu, Mengshan Fu, Liansheng Zhao, Xueyu Qi, Xueli Yu, Wanjun Guo, Sangmi Chung, Fan Guo, Tao Li   +17 more
wiley   +1 more source

Spatial and Temporal Variations of Polar Ionospheric Total Electron Content over Nearly Thirteen Years

Sensors, 2020
It is of great significance for the global navigation satellite system (GNSS) service to detect the polar ionospheric total electron content (TEC) and its variations, particularly under disturbed ionosphere conditions, including different phases of solar
Hui Xi, Hu Jiang, Jiachun An, Zemin Wang, Xueyong Xu, Houxuan Yan, Can Feng   +6 more
doaj   +1 more source

GPS phase scintillation and proxy index at high latitudes during a moderate geomagnetic storm [PDF]

Annales Geophysicae, 2013
The amplitude and phase scintillation indices are customarily obtained by specialised GPS Ionospheric Scintillation and TEC Monitors (GISTMs) from L1 signal recorded at the rate of 50 Hz.
P. Prikryl, R. Ghoddousi-Fard, B. S. R. Kunduri, E. G. Thomas, A. J. Coster, P. T. Jayachandran, E. Spanswick, D. W. Danskin   +7 more
doaj   +1 more source

An Effector TaCRVP From Tuta Absoluta Oral Secretion Impairs H2O2‐Mediated Plant Defense by Targeting Tomato SlCAT2

Advanced Science, EarlyView.
The Tuta absoluta salivary effector TaCRVP subverts tomato immunity by hijacking host catalase SlCAT2. Through a sophisticated dual mechanism, TaCRVP simultaneously promotes SlCAT2 tetramerization for activation and blocks its SlAdBiL‐mediated degradation for stabilization.
Jianquan Yan, Youdan Zhang, Zhujun Wang, Huatao Tang, Huiping Liu, Zi Chen, Shuai Liu, Jiayi Shi, Lu Peng, Youming Hou   +9 more
wiley   +1 more source