Results 81 to 90 of about 414,079 (344)

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

open access: yesThe Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx   +6 more
wiley   +1 more source

Drug reactions with skin manifestations. How to discover?

open access: yesЛечащий Врач, 2021
Reasons of appearance and clinical manifestations of toxicodermia were considered. It was indicated that drug reactions with skin manifestations are extremely versatile.
Yu. G. Haliulin, D. Sh. Macharadze
doaj   +2 more sources

Data-driven magnetohydrodynamic modelling of a flux-emerging active region leading to solar eruption

open access: yesNature Communications, 2016
Solar eruptions are well-recognized as major drivers of space weather but what causes them remains an open question. Here we show how an eruption is initiated in a non-potential magnetic flux-emerging region using magnetohydrodynamic modelling driven ...
Chaowei Jiang   +4 more
semanticscholar   +1 more source

HST Images Flash Ionization of Old Ejecta by the 2011 Eruption of Recurrent Nova T Pyxidis [PDF]

open access: yes, 2015
T Pyxidis is the only recurrent nova surrounded by knots of material ejected in previous outbursts. Following the eruption that began on 2011 April 14.29, we obtained seven epochs (from 4 to 383 days after eruption) of Hubble Space Telescope narrowband ...
Bond, Howard E.   +10 more
core   +3 more sources

Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic

open access: yesThe Anatomical Record, EarlyView.
Abstract Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and
Julia Lara Rodrigues de Souza   +5 more
wiley   +1 more source

Magma transfer at Campi Flegrei caldera (Italy) before the 1538 AD eruption

open access: yesScientific Reports, 2016
Calderas are collapse structures related to the emptying of magmatic reservoirs, often associated with large eruptions from long-lived magmatic systems.
M. D. Di Vito   +11 more
semanticscholar   +1 more source

SOLAR ERUPTION ON 4 JANUARY 2011: CASE STUDY FOR SPACE EARLY WARNING [PDF]

open access: yes, 2011
We perform intuitive analysis for solar eruption on 4 January 2011. Since we do not have magnetic observational data from the eruption, we perform first order calculation and expands it as interplanetary total effect of energy propagation by retro ...
Bambang, Setiahadi
core  

Two Step Filament Eruption During 14-15 March 2015

open access: yes, 2017
We present here an interesting two-step filament eruption during 14-15 March 2015. The filament was located in NOAA AR 12297 and associated with a halo Coronal Mass Ejection (CME).
Chandra, R.   +3 more
core   +2 more sources

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

open access: yesThe Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Emergence of Primary Teeth in Children of Sunsari District of Eastern Nepal

open access: yesMcGill Journal of Medicine, 2020
: This study assessed the timing and eruption sequence of primary teeth in children of Sunsari district of Eastern Nepal and compared the eruption pattern of males & females between various, ethnic groups.
Anita Gupta   +6 more
doaj   +1 more source

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