Results 101 to 110 of about 18,971,872 (256)

The Temperature and First Ionization Potential Bias of Active Regions and Their Relations to In Situ Solar Wind

open access: yesThe Astrophysical Journal
Active regions (ARs) are important sources of the slow solar wind. Connecting the properties of ARs and their associated solar wind can improve our understanding of the origin and generation mechanisms of the slow solar wind.
Chi Ma   +5 more
doaj   +1 more source

Present and Future Thermal–Oxygen Habitat for Glacial‐Relict Fish at Southern Range Margins

open access: yesEcology of Freshwater Fish, Volume 36, Issue 1, January 2027.
ABSTRACT Climate change and eutrophication may alter the distribution of species through their effects on freshwater thermal–oxygen regimes. We quantified the deep‐water thermal–oxygen niche of cold‐adapted glacial‐relict fish (Salvelinus alpinus and Coregonus spp.) at the southern range to assess their vulnerability to a changing environment.
Antony Smith   +4 more
wiley   +1 more source

Sixty years in radio astronomy: a tribute to Bruce Slee [PDF]

open access: yes, 2005
Bruce Slee is one of the pioneers of radio astronomy. After recording solar emission during World War II, he joined what was then the Council of Scientific and Industrial Research's Division of Radiophysics in Sydney, Australia, and went on to make ...
Orchiston, Wayne
core   +1 more source

University of Maryland: Astronomy Workshop

open access: yes, 2000
Professor Douglas P. Hamilton and his students at the University of Maryland created this website to provide individuals with astronomy tools and tutorials.

core  

Heat Transfer Analysis and Modeling for a Coaxial Solar Collector in a Domestic Cogeneration System

open access: yes, 2011
The need for an efficient energy system in domestic houses push the research toward innovative cogeneration system, which can meets the needs for electricity, heating and cooling power.
Alberto Bertaso   +5 more
core   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

open access: yesPerspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki   +5 more
wiley   +1 more source

Survivability of Amino Acids in Lunar Soil

open access: yesThe Planetary Science Journal
We present a laboratory investigation on the survivability of amino acids in lunar simulant soil under conditions similar to the lunar surface. Survival rates of various amino acids are quantified using ultra-high-performance liquid chromatography in ...
Li Hsia Yeo   +5 more
doaj   +1 more source

Science Needs for a Terrestrial Biosphere Tipping Point Early Warning System

open access: yesReviews of Geophysics, Volume 64, Issue 4, December 2026.
Abstract Tipping points in the Earth system have the potential to cause major detrimental impacts to the biosphere and societies. Their inherent nonlinearity implies that even relatively small additional increases in external forcing might result in disproportionately large adjustments to components of the Earth system.
Jesse F. Abrams   +13 more
wiley   +1 more source

Astronomy 161-The Solar System

open access: yes
The Solar System online course is maintained by the Department of Physics & Astronomy at the University of Tennessee. The twenty two chapters cover everything from time and scale in the universe, development of modern astronomy, the planets ...

core  

The Benefits of High Resolution Multispectral TIR Data and Its Impending Loss by NASA After Four Decades

open access: yesPerspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract NASA has led multispectral (≥3 wavelength bands) thermal infrared (TIR) sensor development from the earliest days of the agency. These data are critical in addressing a wide range of scientific questions and administration priories by measuring both temperature (for wildfire and volcanic eruption monitoring, agricultural plant stress, and ...
M. S. Ramsey   +8 more
wiley   +1 more source

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