Results 81 to 90 of about 1,591,136 (306)

Forcing of Northern Hemisphere Climate Trends

Journal of the Atmospheric Sciences, 2003
The impact of observed global SST trends during the second half of the twentieth century on the Northern Hemisphere extratropical winter atmospheric circulation is investigated using ensembles of simulations with the Center for Ocean‐Land‐Atmosphere Studies (COLA) atmospheric GCM.
Schneider, E., Bengtsson, L., Hu, Z.
openaire   +2 more sources

Postcranial anatomy and osteohistology of an early prozostrodont cynodont from the Upper Triassic of Brazil

The Anatomical Record, EarlyView.
Abstract Prozostrodon brasiliensis, a probainognathian cynodont of the clade Prozostrodontia, is recognized as a key taxon for understanding the origin of Mammaliaformes and mammals. Despite detailed investigations of its cranial anatomy, the postcranial skeleton has received comparatively less attention.
Iasmim M. Michelotti, Lívia Roese‐Miron, Brodsky Dantas Macedo Farias, Marina Bento Soares, Leonardo Kerber   +4 more
wiley   +1 more source

The ionospheric F2 region winter anomaly and its dependence on solar activity in the northern and southern hemisphere.

Geofísica Internacional, 1997
Data from two ionospheric sounders each from the northern and southern hemisphere, are used for a statistical analysis of foF2 monthly medians for summer and winter and high and low solar activity.
Eduardo Francisco Garat, Ana Martínez Pulido   +1 more
doaj  

Exceptional preservation informs the paleobiology of tapinocephalid dinocephalians

The Anatomical Record, EarlyView.
Abstract The tapinocephalid dinocephalian Moschops is one of the most iconic taxa of the middle Permian, yet its paleobiology remains one of the least well‐known. Here, we address some aspects of paleoneurology and paleobiology of Moschops using CT scanning of four well preserved skulls from the upper Abrahamskraal Formation of South Africa. Two of the
Julien Benoit, Lars Schmitz, Kenneth D. Angielczyk, Luke A. Norton, Andrew D. Bolton, Adam Midzuk, Roger M. H. Smith   +6 more
wiley   +1 more source

Development of the nasal capsule in Emydura subglobosa (Testudines: Pleurodira) with a comparison to other turtles

The Anatomical Record, EarlyView.
Abstract Extant turtles occupy freshwater, marine, and terrestrial habitats, and their nasal region provides important evidence for the evolution of respiration‐ and sensory‐related cranial morphology. However, developmental data on the turtle nasal capsule remain limited, particularly in Pleurodira.
Kai Ito, Paweł Kaczmarek, Taro Nojiri, María Victoria Fernandez Blanco, Ryo Kodera, Ingmar Werneburg   +5 more
wiley   +1 more source

A man of his time: Joseph Leidy, racial science, and American anatomy

Anatomical Sciences Education, EarlyView.
Abstract Professor Joseph Leidy M.D. was arguably the most influential anatomist in the nineteenth‐century United States, having written over 500 publications and serving as the first President of the Association of American Anatomists. While many of Leidy's diverse contributions to American science and medicine are well‐known, scholars have said much ...
Christopher D. E. Willoughby
wiley   +1 more source

No trends in spring and autumn phenology during the global warming hiatus

Nature Communications, 2019
A global warming hiatus occurred during 1998 and 2012 but its effects on phenology are unclear. Here the authors examine the trends in spring and autumn phenology in the northern hemisphere and the effects of the warming hiatus and show that phenology ...
Xufeng Wang, Jingfeng Xiao, Xin Li, Guodong Cheng, Mingguo Ma, Gaofeng Zhu, M. Altaf Arain, T. Andrew Black, Rachhpal S. Jassal   +8 more
doaj   +1 more source

Atypical Cerebellar Responses are Associated with Altered Neural Habituation during Sensory Stimulation in Autism

Autism Research, EarlyView.
ABSTRACT Sensory processing atypicalities are highly prevalent in autistic youth; yet, the neural mechanisms underlying these differences are not well understood. While the cerebellum plays a key role in sensorimotor coordination and is structurally and functionally atypical in the autistic brain, it has been overlooked in research investigating ...
Melis E. Cakar, Kaitlin K. Cummings, Susan Y. Bookheimer, Mirella Dapretto, Shulamite A. Green   +4 more
wiley   +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

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source