Results 31 to 40 of about 46,432 (331)

Radiation‐Resistant Aluminum Alloy for Space Missions in the Extreme Environment of the Solar System

Advanced Materials, EarlyView.
A novel ultrafine‐grained aluminum crossover alloy exhibits unprecedented radiation resistance and mechanical stability under extreme irradiation doses up to 100 dpa. The exceptional resilience arises from thermodynamically stable T‐phase precipitates, enabling lightweight structural materials for next‐generation spacecraft and extraterrestrial ...
Patrick D. Willenshofer, Matheus A. Tunes, Hi T. Vo, Lukas Stemper, Markus Alfreider, Oliver Renk, Graeme Greaves, Daniel Kiener, Peter J. Uggowitzer, Stefan Pogatscher   +9 more
wiley   +1 more source

Performance Constraints of All‐Perovskite Tandem Solar Cells in Low‐Intensity, Low‐Temperature Environments

Advanced Materials, EarlyView.
All‐perovskite tandem solar cells are evaluated under low‐intensity and low‐temperature (LILT) conditions relevant to space environments. Distinct loss regimes emerge, where weaker entropic mixing causes halide segragation below ≈240 K going along with a strong current imbalance, while poor electron transport in C60 dominates.
Sercan Ozen, Etienne Beier, Francisco Peña‐Camargo, Jarla Thiesbrummel, Gianluca Boccarella, Paria Forozi Sowmeeh, Martin Stolterfoht, Dieter Neher, Kai Oliver Brinkmann, Thomas Riedl, Felix Lang   +10 more
wiley   +1 more source

The Chandra X-Ray Observatory's Radiation Environment and the AP-8/AE-8 Model

, 2000
The Chandra X-ray Observatory (CXO) was launched on July 23, 1999 and reached its final orbit on August 7, 1999. The CXO is in a highly elliptical orbit, approximately 140,000 km x 10,000 km, and has a period of approximately 63.5 hours (~ 2.65 days). It
Butt, Yousaf M., Mueller-Mellin, Reinhold, Plucinsky, Paul P., Virani, Shanil N.   +3 more
core   +2 more sources

Distribution of Seed Electron Phase Space Density Minima in Earth's Radiation Belts

Geophysical Research Letters
We conducted a statistical analysis of local phase space density (PSD) minima across a wide energy range (∼20 keVs to ∼10 MeV), using observations from the Van Allen Probes and the Geostationary Operational Environmental Satellite.
A. Y. Drozdov, H. J. Allison, A. A. Saikin, Q. Schiller, D. Wang   +4 more
doaj   +1 more source

Forecasting the Earth’s radiation belts and modelling solar energetic particle events: Recent results from SPACECAST

Journal of Space Weather and Space Climate, 2013
High-energy charged particles in the van Allen radiation belts and in solar energetic particle events can damage satellites on orbit leading to malfunctions and loss of satellite service. Here we describe some recent results from the SPACECAST project on
Poedts Stefaan, Maget Vincent, Sicard Angelica, Boscher Daniel, Amariutei Olga A., Ganushkina Natalia Y., Afanasiev Alexandr, Vainio Rami, Koskinen Hannu, Meredith Nigel P., Glauert Sarah A., Horne Richard B., Jacobs Carla, Sanahuja Blai, Aran Angels, Heynderickx Daniel, Pitchford David   +16 more
doaj   +1 more source

Dependence of Energetic Electron Precipitation on the Geomagnetic Index Kp and Electron Energy [PDF]

Journal of Astronomy and Space Sciences, 2013
It has long been known that the magnetospheric particles can precipitate into the atmosphere of the Earth. In this paper we examine such precipitation of energetic electrons using the data obtained from low-altitude polar orbiting satellite ...
Mi-Young Park, Dae-Young Lee, Dae-Kyu Shin, Jung-Hee Cho, Eun-Hee Lee   +4 more
doaj   +1 more source

Ecosystem‐Centered Robot Design: Toward Ecoresorbable Sustainability Robots (ESRs)

Advanced Science, EarlyView.
Robots exploring natural ecosystems can support monitoring and conservation, but must adopt ecosystem‐centered design to avoid pollution, waste, and damage. This review proposes guidelines for co‐designing ecoresorbable sustainability robots (ESRs), uniting materials, robotics, and ecological contexts in a single framework.
Tülin Yılmaz Nayır, Yuan Fang, Consuelo Contreras, Andrew K. Schulz, Florian Hartmann   +4 more
wiley   +1 more source

Convergent and Divergent Connectivity Patterns of the Arcuate Fasciculus in Macaques and Humans

Advanced Science, EarlyView.
This study employs viral‐based single‐neuron tracing and dMRI‐based whole‐brain tractography to investigate arcuate fasciculus (AF) trajectories in macaque monkeys, and compares with the human AF connectome using spectral embedding. Results demonstrate conserved AF topography spanning temporoparietal‐auditory‐frontal pathways across primates, with ...
Jiahao Huang, Ruifeng Li, Wenwen Yu, Anan Li, Xiangning Li, Mingchao Yan, Lei Xie, Qingrun Zeng, Xueyan Jia, Shuxin Wang, Ronghui Ju, Feng Chen, Qingming Luo, Hui Gong, Andrew Zalesky, Xiaoquan Yang, Yuanjing Feng, Zheng Wang   +17 more
wiley   +1 more source

Anthropogenic Space Weather

, 2017
Anthropogenic effects on the space environment started in the late 19th century and reached their peak in the 1960s when high-altitude nuclear explosions were carried out by the USA and the Soviet Union.
A. Finkbeiner, A. Karinen, A.B. Hassam, A.C. Dickieson, A.C. Durney, A.C. Durney, A.C. Fraser-Smith, A.C. Fraser-Smith, A.C. Fraser-Smith, A.J. Smith, A.J. Zmuda, A.L. Cullington, A.L. Vampola, A.L. Vampola, A.N. Jaynes, A.V. Streltsov, B. Abel, B.H. Mauk, B.J. O’Brien, B.J. O’Brien, B.T. Tsurutani, B.T. Tsurutani, C.A. Kletzing, C.E. McIlwain, C.E. McIlwain, C.G. Park, C.G. Park, C.J. Rodger, C.S. Roberts, D. Carpenter, D.J. Kessler, D.J. Williams, D.L. Carpenter, D.L. Carpenter, D.L. Reasoner, D.M. Chapin, D.N. Baker, D.N. Baker, D.N. Baker, D.P. Miles, G. Haerendel, G. Klawitter, G. Xin, G.F. Pieper, G.F. Pieper, G.F. Pieper, H. Elliot, H. Elliot, H. Klinkrad, H. Maeda, H.A. Bomke, H.A. Bomke, H.C. Koons, J. Leiphart, J. Roquet, J. Wait, J.-A. Sauvaud, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Lawrie, J.A. Sauvaud, J.B. Harold, J.C. Foster, J.C. Foster, J.F. Fennell, J.F. Fennell, J.F. Gabites, J.L. Green, J.P. Luette, J.S. Mayo, K. Bullough, K. Papadopoulos, K. Rastani, K.A. Zawdie, K.G. McKay, L. Allen, L. Biermann, M. Casaverde, M. Mendillo, M. Mendillo, M. Parrot, M. Parrot, M. Parrot, M. Parrot, M. Walt, M. Walt, M.A. Clilverd, M.B. Cohen, M.F. Larsen, M.J. Starks, M.J. Starks, N. Christofilos, N.C. Christofilos, O. Molchanov, P. Dyal, P. Kulkarni, P.A. Bernhardt, P.A. Bernhardt, P.A. Bernhardt, P.J. Edwards, P.J. Kellogg, P.R. Pisharoty, R. Helliwell, R. Lüst, R. Raghuram, R.A. Helliwell, R.A. Helliwell, R.A. Helliwell, R.A. Helliwell, R.B. Horne, R.C. Baker, R.C. Moore, R.E. Fischell, R.E. Fischell, R.G. D’Arcy, R.J. Danchik, R.L. Heyborne, R.L. Smith, R.R. Meier, R.R. Scarabucci, R.R. Unterberger, S. Breiner, S.A. Colgate, S.B. Mende, S.L. Kahalas, S.M. Krimigis, T. Pedersen, T.F. Bell, T.R. Pedersen, U.S. Inan, U.S. Inan, U.S. Inan, U.S. Inan, U.S. Inan, U.S. Inan, U.S. Inan, V.S. Sonwalkar, V.S. Sonwalkar, W. Rosenzweig, W.J. Karzas, W.K. Berthold, W.L. Brown, W.L. Brown, W.L. Brown, W.L. Imhof, W.N. Hess, W.N. Hess, X. Li, Y. Omura, Y.I. Galperin   +157 more
core   +1 more source

Scalable, Microwave‐Enabled Synthesis of Ternary WxTi1‐xO2 and Heterostructured TiO2‐WO3‐x Colloidal Nanocrystals: Carrier Dynamics and Photocatalytic Properties

Advanced Science, EarlyView.
Two microwave‐assisted synthetic methods, specifically a one‐pot and a seeded‐growth approach, are developed within a hydroalcoholic solution for the growth of single‐phase ternary WxTi1‐xO2 and heterostructured TiO2‐WO3‐x colloidal nanocrystals. Both types of nanocrystals show significant photocatalytic activity for 4‐methoxybenzyl alcohol oxidation ...
Riccardo Scarfiello, Michele Guizzardi, Angela Fiore, Armando Genco, Concetta Nobile, Elisabetta Perrone, Sara Fernanda Orsini, Clémentine Fellah, Lucian Roiban, Marianna Bellardita, Anna Maria Venezia, Giulio Cerullo, Leonardo Palmisano, Luigi Carbone   +13 more
wiley   +1 more source