Results 61 to 70 of about 109,612 (300)

Design considerations for combined radiation effects facilities for twelve year outer planet spacecraft voyages [PDF]

, 1972
The design considerations influencing the choice and utility of environmental simulation methods and facilities are described, insofar as they relate to the requirements imposed on outer planet spacecraft because of radiation environments to be expected.
Miller, C. G.
core   +2 more sources

Spatial metrics in fire ecology: seeking consistency amidst complexity

Biological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey, Geoffrey J. Cary, Teigan Cremona, Hugh F. Davies, Brett P. Murphy, Sam C. Banks   +5 more
wiley   +1 more source

Understanding the properties, wave drivers, and impacts of electron microburst precipitation: Current understanding and critical knowledge gaps

Frontiers in Astronomy and Space Sciences, 2022
Microbursts are impulsive (<1s) injections of very energetic to relativistic electrons (energies from a few keV to MeV) into Earth’s atmosphere. They are important because they may represent a major loss process for the outer radiation belt (Ripoll ...
Sadie S. Elliott, Aaron Breneman, Christopher Colpitts, Jacob Bortnik, Allison Jaynes, Alexa Halford, Mykhaylo Shumko, Mykhaylo Shumko, Lauren Blum, Lunjin Chen, Ashley Greeley, Drew Turner   +11 more
doaj   +1 more source

Using ACIS on the Chandra X-ray Observatory as a particle radiation monitor

, 2010
The Advanced CCD Imaging Spectrometer (ACIS) is one of two focal-plane instruments on the Chandra X-ray Observatory. During initial radiation-belt passes, the exposed ACIS suffered significant radiation damage from trapped soft protons scattering off the
Bautz, M. W., Grant, C. E., LaMarr, B., O'Dell, S. L.   +3 more
core   +1 more source

Are Energetic Electrons in the Solar Wind the Source of the Outer Radiation Belt? [PDF]

, 1997
Using data from WIND, SAMPEX (Solar Anomalous, and Magnetospheric Particle Explorer), and the Los Alamos National Laboratory (LANL) sensors onboard geostationary satellites, we investigate the correlation of energetic electrons in the 20–200 keV range in
Baker, D. N., Kanekal, S. G., Larson, D., Li, Xinlin, Lin, R. P., Looper, M., Mewaldt, R. A., Reeves, G. D., Temerin, M.   +8 more
core   +1 more source

Discovering Earth’s radiation belts [PDF]

Physics Today, 2017
Six decades after the belts’ discovery in 1958, scientists are still finding mysterious features.
Daniel N. Baker, Mikhail I. Panasyuk
openaire   +1 more source

The extension of the taxon cycle model to island plants: insights from the Canarian vascular flora

Biological Reviews, EarlyView.
ABSTRACT Taxon cycle models describe eco‐evolutionary patterns of lineage colonization, diversification, and decline across archipelagos, inferring an important role for competition amongst ecologically similar taxa in driving concurrent niche changes.
José María Fernández‐Palacios, Rüdiger Otto, Robert J. Whittaker   +2 more
wiley   +1 more source

Community Voices on the Future of Radiation Belt Research: A Summary of the 2024 GEM Radiation Belt Focus Group Round‐Table Discussion

Earth and Space Science
Earth's radiation belts are the regions where highly energetic charged particles are trapped by Earth's magnetic field, posing significant risks to the satellites and other space‐based technologies.
Hong Zhao, Lauren Blum, Aleksandr Ukhorskiy, Xiangrong Fu   +3 more
doaj   +1 more source

The global statistical response of the outer radiation belt during geomagnetic storms [PDF]

, 2018
Using the total radiation belt electron content calculated from Van Allen Probe phase space density (PSD), the time-dependent and global response of the outer radiation belt during storms is statistically studied.
Anderson, Aryan, Baker, Baker, Baker, Baker, Baker, Baker, Blake, Borovsky, Boyd, Boyd, Chen, Claudepierre, Elkington, Forsyth, Halford, Hietala, Horne, Horne, Hutchinson, Jaynes, Kanekal, Kataoka, Kilpua, Kilpua, Kim, King, Li, Li, Loto'aniu, Mann, Mann, Mathie, Mauk, Meredith, Millan, Miyoshi, Miyoshi, Murphy, Murphy, Murphy, Orlova, Ozeke, Ozeke, Ozeke, Pahud, Rae, Rae, Reeves, Reeves, Schulz, Shen, Shprits, Shue, Sibeck, Su, Thorne, Thorne, Tsyganenko, Turner, Turner, Turner, Turner, Usanova, West, Wrenn, Yokoyama, Yuan, Yuan   +69 more
core   +3 more sources

Development of a Mechanically Regenerating Desublimator for Freeze‐Drying Systems in the Food Industry

Chemie Ingenieur Technik, EarlyView.
Thermal defrosting limits desublimator efficiency in freeze‐drying. This review and case study compares thermal versus mechanical regeneration, links frost properties and external heat transfer to energy demand, and summarizes pilot‐scale scraping results enabling single‐unit, continuous lyophilization.
Moritz Krummenacher, Mirko Kleingries, Edgar Zimmer, Roman Blättler   +3 more
wiley   +1 more source