Results 61 to 70 of about 4,981,387 (304)

Hemispheric ozone variability indices derived from satellite observations and comparison to a coupled chemistry-climate model [PDF]

Atmospheric Chemistry and Physics, 2006
Total column ozone is used to trace the dynamics of the lower and middle stratosphere which is governed by planetary waves. In order to analyse the planetary wave activity a Harmonic Analysis is applied to global multi-year total ozone observations from ...
T. Erbertseder, V. Eyring, M. Bittner, M. Dameris, V. Grewe   +4 more
doaj  

Mechanism for the formation of the high-altitude stagnant cusp: Cluster and SuperDARN observations [PDF]

, 2006
On 16 March 2002, Cluster moved from nightside to dayside, across the high-altitude northern cusp during an extended period of relatively steady positive IMF BY and BZ. Combined Cluster and SuperDARN data imply the existence of two reconnection sites: in
Bogdanova, Y.V., Davies, J.A., Dunlop, M.W., Fazakerley, A.N., Frey, H.U., Klecker, B., Marchaudon, A., Milan, S.E., Owen, C.J., Wild, J.A.   +9 more
core  

Spots structure and stratification of helium and silicon in the atmosphere of He-weak star HD 21699

, 2009
The magnetic star HD 21699 possesses a unique magnetic field structure where the magnetic dipole is displaced from the centre by 0.4 +/- 0.1 of the stellar radius (perpendicularly to the magnetic axis), as a result, the magnetic poles are situated close ...
A. V. Shavrina, Abt, Alecian, Brown, Donati, Donati, G. A. Chuntonov, Gerth, Glagolevskij, Glagolevskij, Glagolevskij, Grevesse, J. Silvester, Khan, Kupka, Megessier, Molnar, Monin, Morgan, Osmer, Pavlenko, Pavlenko, Percy, Preston, Roman, Ryabchikova, Shore, Smith, Smith, Stateva, Tsymbal, V. R. Khalack, Vauclair, Vauclair, Vauclair, Wade, Ya. V. Pavlenko, Yu. V. Glagolevskij   +37 more
core   +1 more source

Constrained structure of ancient Chinese poetry facilitates speech content grouping

, 2020
Ancient Chinese poetry is constituted by structured language that deviates from ordinary language usage [1, 2]; its poetic genres impose unique combinatory constraints on linguistic elements [3].
Blohm, S., Cai, Q., Ma, M., Teng, X., Tian, X., Yang, J.   +5 more
core   +1 more source

Traumatic Microhemorrhages Are Not Synonymous With Axonal Injury

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Diffuse axonal injury (DAI) is caused by acceleration‐deceleration forces during trauma that shear white matter tracts. Susceptibility‐weighted MRI (SWI) identifies microbleeds that are considered the radiologic hallmark of DAI and are used in clinical prognostication.
Karinn Sytsma, Rhonda Mittenzwei, Heather Maioli, Amanda Kirkland, C. Dirk Keene, Ramon Diaz‐Arrastia, Christine Mac Donald, Chiara Maffei, Brian L. Edlow, Amber L. Nolan   +9 more
wiley   +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

A Tropospheric Assessment of the ERA-40, NCEP, and JRA-25 Global Reanalyses in the Polar Regions [PDF]

, 2007
The reliability of the global reanalyses in the polar regions is investigated. The overview stems from an April 2006 Scientific Committee on Antarctic Research (SCAR) workshop on the performance of global reanalyses in high latitudes held at the British ...
Adler, Andersson, Baldwin, Bengtsson, Bengtsson, Bengtsson, Bromwich, Bromwich, Bromwich, Bromwich, Bromwich, Crochet, Cullather, David H. Bromwich, Déry, Fogt, Francis, Gong, Hanna, Hines, Hodges, Hodges, Hoskins, Hoskins, Ishii, John E. Walsh, Kalnay, Kanamitsu, Kevin I. Hodges, Kidson, Kistler, L'Heureux, Marshall, Marshall, Marshall, Monaghan, Onogi, Raphael, Renwick, Richman, Ryan L. Fogt, Schubert, Serreze, Serreze, Serreze, Serreze, Serreze, Serreze, Serreze, Serreze, Sterl, Sturaro, Su, Tennant, Thompson, Trenberth, Trenberth, Turner, Uppala, van de Berg, van de Berg, Vaughan, Walsh, Wang   +63 more
core   +1 more source

A two-layered brain network model and its chimera state

Scientific Reports, 2019
Based on the data of cerebral cortex, we present a two-layered brain network model of coupled neurons where the two layers represent the left and right hemispheres of cerebral cortex, respectively, and the links between the two layers represent the inter-
Ling Kang, Changhai Tian, Siyu Huo, Zonghua Liu   +3 more
semanticscholar   +1 more source

Association of CDKN2A/B Homozygous Deletion and Extent of Resection With Survival of Patients With WHO CNS5 Grade 4 Astrocytoma

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives WHO grade 4 astrocytomas are associated with poor prognosis, and their prognostic factors remain controversial. This study aimed to identify the prognostic factors and develop a management algorithm for these patients. Methods This study retrospectively included 151 CNS5 adult grade 4 astrocytomas from two medical centers.
Jiawei Cai, Guanglin Zhu, Qiu He, Chen Luo, Lingyun Zhuo, Xingfu Wang, Yiming Chen, Xiaoyong Chen, Wendong You, Jiaheng Xu, Yuanxiang Lin, Dezhi Kang, Shuai Wu, Zanyi Wu   +13 more
wiley   +1 more source

Bipolar carbon and hydrogen isotope constraints on the Holocene methane budget [PDF]

Biogeosciences, 2018
Atmospheric methane concentration shows a well-known decrease over the first half of the Holocene following the Northern Hemisphere summer insolation before it started to increase again to preindustrial values.
J. Beck, J. Beck, M. Bock, M. Bock, J. Schmitt, J. Schmitt, B. Seth, B. Seth, T. Blunier, H. Fischer, H. Fischer   +10 more
doaj   +1 more source