Results 41 to 50 of about 1,602,454 (306)

Copepods in the Northern Hemisphere [PDF]

Nature, 1925
IT has long been recognised that the distribution of freshwater copepods has been profoundly influenced by the incidence of the glacial period, since the lake-districts which they inhabit are to a large extent postglacial catchment basins. It so happens that there is a general correspondence between the three leading sub-orders and the three principal ...
openaire   +1 more source

Western Hemisphere Drug Policy Commission [website]

, 2021
Website of the Western Hemisphere Drug Policy Commission (WHDPC), charged to "evaluate a range of US counternarcotics programs in the Americas and then make recommendations to improve them" -- including a recording and transcript of the group's hearing ...
United States. Western Hemisphere Drug Policy Commission.
core  

Mountain uplift and the glaciation of North America – a sensitivity study [PDF]

, 2010
The Miocene (24 to 5 million years ago) wasa period of relative global warmth compared to the Quaternary(2 million years ago to present; e.g. Zachos et al.,2001) and was characterised by the intermittent glaciationof Antarctica only.
Lunt, D.J., Lunt, D. J., G. L. Foster, D. J. Lunt, Parrish, R.R., Parrish, RR, Foster, G.L., Lunt, DJ, Parrish, R. R., R. R. Parrish, Foster, G. L., Foster, GL   +11 more
core   +2 more sources

Mesoscale temperature fluctuations in the Southern Hemisphere stratosphere [PDF]

Atmospheric Chemistry and Physics, 2008
Isentrope surfaces in the Southern Hemisphere stratosphere reveal that air parcels undergo mesoscale temperature fluctuations that depend on latitude and season.
B. L. Gary
doaj  

A tropical mechanism for Northern Hemisphere deglaciation [PDF]

Geochemistry, Geophysics, Geosystems, 2003
We investigate the role of the tropics in the melting and reforming of the Laurentide ice sheet on glacial timescales using an atmospheric general circulation model. It is found that warming of tropical sea surface temperatures (SSTs) from glacial boundary conditions, as observed at the end of glacial periods, causes a large increase in summer ...
Rodgers, K. B., Lohmann, G., Lorenz, S., Schneider, R., Henderson, G. M.   +4 more
openaire   +4 more sources

Numerical simulations of oceanic oxygen cycling in the FAMOUS Earth-System model: FAMOUS-ES, version 1.0 [PDF]

Geoscientific Model Development, 2014
Addition and validation of an oxygen cycle to the ocean component of the FAMOUS climate model are described. At the surface, FAMOUS overestimates northern hemisphere oxygen concentrations whereas, at depth, the southern hemisphere values are too low ...
J. H. T. Williams, I. J. Totterdell, P. R. Halloran, P. J. Valdes   +3 more
doaj   +1 more source

Natural Frequencies of Levodopa‐Induced Dyskinesia in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Ioannis U. Isaias, Federica Avantaggiato, Gianni Pezzoli, Andrea Canessa   +3 more
wiley   +1 more source

Change in Earth’s solar climate over the period from 1900 to 2100

Solar-Terrestrial Physics
The paper presents the results of the analysis of changes in Earth’s solar climate over the period from 1900 to 2100. It has been determined that the annual meridional gradient of irradiation intensity from 1900 to 2100 and latitudinal differences in the
Fedorov Valery, Frolov Denis
doaj   +1 more source

The oldest mysticete in the Northern Hemisphere

Current Biology
Extant baleen whales (Mysticeti) uniquely use keratinous baleen for filter-feeding and lack dentition, but the fossil record clearly shows that "toothed" baleen whales first appeared in the Late Eocene.1 Globally, only two Eocene mysticetes have been found, and both are from the Southern Hemisphere: Mystacodon selenensis from Peru, 36.4 mega-annum (Ma)
Cheng-Hsiu Tsai, James L. Goedert, Robert W. Boessenecker   +2 more
openaire   +2 more sources

Human iPSC‐Derived Tissue‐Engineered Nigrostriatal Pathway for Chronic Restoration of Dopaminergic Axon Tracts in a Rat Parkinson's Model

Advanced Healthcare Materials, EarlyView.
Inspired by conventional cell therapy and emerging bioengineering approaches, the tissue‐engineered nigrostriatal pathway (TE‐NSP) has an anatomically‐inspired design comprising a population of human dopaminergic neurons with unidirectional, long‐projecting axon tracts.
Wisberty J. Gordián‐Vélez, Dimple Chouhan, Kevin D. Browne, James Lim, Saarang P. Karandikar, Rodrigo A. España, John E. Duda, H. Isaac Chen, D. Kacy Cullen   +8 more
wiley   +1 more source