Results 51 to 60 of about 1,088,351 (301)

Magnetic twist: a source and property of space weather

, 2012
We present evidence for finite magnetic helicity density in the heliosphere and numerical models thereof, and relate it to the magnetic field properties of the dynamo in the solar convection zone.
Blackman, Blackman, Bothmer, Brandenburg, Brandenburg, Brandenburg, Hubbard, Käpylä, Käpylä, Low, Low, Matthaeus, Mitra, Pouquet, Subramanian, Warnecke, Warnecke   +16 more
core   +4 more sources

Imaging space weather over Europe [PDF]

, 2013
[1] We describe the introduction of the first all-sky imaging system for low-light-level optical observations of the disturbed ionosphere over mid-latitude Europe.
Barbieri, Cesare, Baumgardner, Jeffrey, Ciraolo, Luigi, Hairston, Marc, Kinrade, Joe, Martinis, Carlos, Materassi, Massimo, Mendillo, Michael, Mitchell, Cathryn, Umbriaco, Gabriele, Wroten, Joei   +10 more
core   +1 more source

Enhanced Switching Performance in Single‐Crystalline PbTiO3 Ferroelectric Memristors for Replicating Synaptic Plasticity

Advanced Functional Materials, EarlyView.
This study demonstrated single‐crystalline PbTiO3‐based memristors with atomically sharp interfaces, well‐ordered lattices, and minimal lattice mismatch. The devices exhibited an ON/OFF ratio exceeding 105, high stability, and rich resistance‐state modulation.
Haining Li, Zhiqiang Liao, Risa Kataoka, Md Sarker Shamim, Takeshi Kijima, Hiroyasu Yamahara, Hitoshi Tabata, Munetoshi Seki   +7 more
wiley   +1 more source

Ensemble Model Using the Fokker–Planck Equation and Alfvénic Drift for Estimating Proton Flux in Solar Energetic Particle Events

Earth and Space Science
Observations of solar energetic particles (SEPs) accelerated at collisionless shocks driven by coronal mass ejections (CMEs) highlight the importance of understanding proton transport in velocity space.
Ji‐Hoon Ha, Jae‐Hyung Lee, JaeHun Kim, Sang Cheol Han, Wonhyeong Yi, Hyun‐Jun Nah   +5 more
doaj   +1 more source

Prediction Space Weather Using an Asymmetric Cone Model for Halo CMEs

, 2007
Halo coronal mass ejections (HCMEs) are responsible of the most severe geomagnetic storms. A prediction of their geoeffectiveness and travel time to Earth's vicinity is crucial to forecast space weather.
A. Dal Lago, C. Wu, D.F. Webb, G. Michalek, G. Michalek, G. Michalek, G. Michalek, G.E. Brueckner, G.M. Lindsay, H. Cremades, H. Xie, H. Xie, H.V. Cane, J. Chen, J. Chen, J. Chen, J. Krall, J. Zhang, J.-P. Delaboudiniére, K.P. Dere, K.W. Ogilvie, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Gopalswamy, N. Srivastava, O.C. Cyr St., P.K. Manoharan, R.P. Lepping, S. Yashiro, S. Yashiro, S.P. Plunkett, S.W. Kahler, T.G. Forbes, V. Yurchyshyn, X.P. Zhao, Y.-J. Moon   +39 more
core   +1 more source

Host‐Directed Biomaterials for Combatting Bloodstream Infections: From Macrocyclic Peptides to Immune‐Activating Cell Backpacks

Advanced Functional Materials, EarlyView.
Bloodstream infections (BSI) are one of the leading causes of mortality and morbidity in both civilian and military populations. This paper summarizes recent progress in novel treatment strategies to manage BSI arising from both bacterial and fungal pathogens using molecules, particles, and materials to elicit host‐directed immunity.
Thomas Thomou, Jagadish Krishnappa, Justin B. Schaal, Prasad Tongaonkar, Dat Q. Tran, Wenchao Gu, Yung‐Fu Chang, Michael E. Selsted, Shaoyi Jiang, Samir Mitragotri, Michael Super, Christopher J. Bettinger   +11 more
wiley   +1 more source

Study on Test‐Mass Charging for Taiji Gravitational Wave Observatory

Space Weather
Taiji is proposed as a space‐based gravitational wave (GW) observatory consisting of three spacecraft in a heliocentric orbit meanwhile with the distance of 3 million kilometers ahead of the Earth at about 20°.
Ruilong Han, Minghui Cai, Tao Yang, Liangliang Xu, Qing Xia, Xinyu Jia, Dawei Gao, Mengyao Li, Longlong Zhang, Hongwei Li, Jianwei Han   +10 more
doaj   +1 more source

Transparent Inorganic–Organic Bilayer Neural Electrode Array and Integration to Miniscope System for In Vivo Calcium Imaging and Electrophysiology

Advanced Functional Materials, EarlyView.
This study presents the BioCLEAR system, a highly transparent and conductive neural electrode array composed of silver nanowires (AgNWs) and doped PEDOT:PSS, enabling neural recordings with minimal optical artifacts. When integrated with a GRIN lens, this cost‐effective neural implant allows simultaneous electrophysiological recording and GCaMP6‐based ...
Dongjun Han, Kevin Cheng, Swathy Sampath Kumar, Anil Bollimunta, Elizabeth E. Torr, Juhwan Kim, Kyoungmin Kim, Hyungjun Choi, Seongkwon Hwang, Sarah Brodnick, David Cheng, Lindsay Gray, Yei Hwan Jung, William L. Murphy, Aaron J. Suminski, Jonathan J. Nassi, Justin C. Williams, Dong‐Wook Park   +17 more
wiley   +1 more source

Estimating Extreme Geoelectric Field Values for the Australian Region

Space Weather, 2020
There are a number of global initiatives to understand and mitigate the impacts of extreme space weather on critical infrastructure and modern society.
Richard Marshall, Léna Dziura, Liejun Wang, Jeanne Young, Michael Terkildsen   +4 more
doaj   +1 more source

Satellite to Study ''Space Weather'' [PDF]

, 1962
The National Aeronautics and Space Administration soon will launch another Explorer satellite to unravel some of the scientific mysteries of how "space weather" affects man's daily life and his future exploration of space.

core   +1 more source