Results 81 to 90 of about 301,665 (287)

Coronal Fe XIV Emission During the Whole Heliosphere Interval Campaign

, 2011
Solar Cycle 24 is having a historically long and weak start. Observations of the Fe XIV corona from the Sacramento Peak site of the National Solar Observatory show an abnormal pattern of emission compared to observations of Cycles 21, 22, and 23 from the
E. Robbrecht, J.-L. Leroy, M. Trellis, M. Trellis, M. Waldmeier, M. Waldmeier, P.R. Wilson, R.C. Altrock, R.C. Altrock, R.C. Altrock, R.N. Smartt, R.R. Fisher, Richard C. Altrock, V. Rušin   +13 more
core   +1 more source

Fresh air in the 21st century? [PDF]

, 2003
Ozone is an air quality problem today for much of the world's population. Regions can exceed the ozone air quality standards (AQS) through a combination of local emissions, meteorology favoring pollution episodes, and the clean-air baseline levels of ...
Brasseur, Daniel Jacob, David Stevenson, Desqueyroux, Didier Hauglustaine, Emberson, Fiore, Frank Dentener, Giovanni Pitari, Gupta, Guy Brasseur, Haagen-Smit, Helen Rogers, Isabelle Bey, Ivar Isaksen, Jean-Francois Muller, Jensen, John Pyle, Johnson, Jostein Sundet, Kathy Law, Larry Horowitz, Lee Grenfell, Li, Loretta Mickley, Mark Lawrence, Matthew Johnson, Mauzerall, Michael Gauss, Michael Prather, Michiel van Weele, Morrison, Mortimer, Oksanen, Oliver Wild, Peden, Penner, Prather, Richard Derwent, Rolf von Kuhlmann, Tarrason, Taylor, Terje Berntsen, Wild   +43 more
core   +4 more sources

Early evolutionary history of the seed

Biological Reviews, EarlyView.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman, Alan R. T. Spencer, Jason Hilton   +2 more
wiley   +1 more source

Assessment of Soil Temperature and Its Change Trends in the Permafrost Regions of the Northern Hemisphere

Land
In this paper, we used data from 42 soil temperature observation sites in permafrost regions throughout the Northern Hemisphere to analyze the characteristics and variability in soil temperature.
Yifan Wu, Guojie Hu, Lin Zhao, Defu Zou, Xiaofan Zhu, Yao Xiao, Tonghua Wu, Xiaodong Wu, Youqi Su, Rui Zhang   +9 more
doaj   +1 more source

Mid-Holocene Intertropical Convergence Zone migration: connection with Hadley cell dynamics and impacts on terrestrial hydroclimate [PDF]

Climate of the Past
This study investigates the multiple changes of the Hadley cell (HC) in response to the northward migration of the Intertropical Convergence Zone (ITCZ) and their combined influence on the terrestrial hydrological cycle during the mid-Holocene, using ...
J. Bian, J. Räisänen, H. Seppä
doaj   +1 more source

A Core Head, Neck, and Neuroanatomy Syllabus for Physical Therapy Student Education

Clinical Anatomy, EarlyView.
ABSTRACT Head, neck, and neuroanatomy are essential components of physical therapy education due to their broad clinical applications. Detailed syllabi exist for medical students, yet none have been developed for physical therapy. This study aimed to produce an International Federation of Associations of Anatomists core head, neck, and neuroanatomy ...
Stephanie J. Woodley, Brooke Willoughby, Alexandra L. Webb, Natasha A. M. S. Flack, Laura Y. Whitburn   +4 more
wiley   +1 more source

Phase‐Locked Rossby Wave‐4 Pattern Dominates the 2022‐Like Concurrent Heat Extremes Across the Northern Hemisphere

Geophysical Research Letters
Concurrent heat extremes (CHEs) are becoming increasingly common in the mid‐high latitudes across the Northern Hemisphere (NH), underscoring the need to comprehend their spatiotemporal characteristics and underlying causes. Here we reveal a phase‐locking
Xiaoye Yang, Gang Zeng, Shiyue Zhang, Vedaste Iyakaremye, Cheng Shen, Wei‐Chyung Wang, Deliang Chen   +6 more
doaj   +1 more source

Cryptic diversity in smooth-shelled mussels on Southern Ocean islands: connectivity, hybridisation and a marine invasion

Frontiers in Zoology, 2019
Background Large numbers of endemic species inhabit subantarctic continental coasts and islands that are characterised by highly variable environmental conditions.
Małgorzata Zbawicka, Jonathan P. A. Gardner, Roman Wenne   +2 more
doaj   +1 more source

Global deformation on the surface of Venus [PDF]

Large-scale mapping of tectonic structures on Venus shows that there is an organized global distribution to deformation. The structures we emphasize are linear compressive mountain belts, extensional rafted zones, and the small-scale but widely ...
Bilotti, Frank, Connors, Chris, Suppe, John   +2 more
core   +1 more source

The Cherenkov Telescope Array: Science Goals and Current Status [PDF]

, 2019
The Cherenkov Telescope Array (CTA) is the major ground-based gamma-ray observatory planned for the next decade and beyond. Consisting of two large atmospheric Cherenkov telescope arrays (one in the southern hemisphere and one in the northern hemisphere),
Consortium, The CTA, Ong, represented by Rene A.   +1 more
core   +2 more sources