Results 11 to 20 of about 133 (46)

Interferometric Meteor Head Echo Observations using the Southern Argentina Agile Meteor Radar (SAAMER) [PDF]

open access: yes, 2014
A radar meteor echo is the radar scattering signature from the free-electrons in a plasma trail generated by entry of extraterrestrial particles into the atmosphere.
Baggaley   +71 more
core   +3 more sources

Ionospheric ion temperature climate and upper atmospheric long-term cooling [PDF]

open access: yes, 2016
It is now recognized that Earth's upper atmosphere is experiencing a long-term cooling over the past several solar cycles. The potential impact of the cooling on societal activities is significant, but a fundamental scientific question exists regarding ...
Erickson, Philip J   +6 more
core   +1 more source

Introgressive hybridization between two close species Siniperca chuatsi and Siniperca kneri (Percomorpharia: Sinipercidae) in the Middle Reaches of the Yangtze River [PDF]

open access: yes, 2021
Siniperca chuatsi and Siniperca kneri are two economically important freshwater fishes endemic to East Asia. Recently, some Siniperca specimens collected from Lake Poyang and Lake Dongting in the middle reaches of the Yangtze River couldn't be clearly ...
Li Chenhong, Zhao Jinliang, Zhu Shuqin
core   +1 more source

Die opvoedingstaak van die universiteit [PDF]

open access: yes, 1970
Die vraag na die opvoedingstaak van die universiteit is onafskeidelik verbonde aan die siening wat gehuldig word aangaande die opvoeding, die student en die universiteit. Dit is derhalwe nodig om vooraf hierdie begrippe in oënskou te neem. Met inagneming
Preller, S.J.
core   +3 more sources

Muons tomography applied to geosciences and volcanology

open access: yes, 2012
Imaging the inner part of large geological targets is an important issue in geosciences with various applications. Dif- ferent approaches already exist (e.g.
Acquafredda   +26 more
core   +3 more sources

Multi-Wavelength Observations of PKS 2142-75 during Active and Quiescent Gamma-Ray States

open access: yes, 2013
PKS2142-75 (a.k.a. 2FGL J2147.4-7534) is a flat-spectrum radio quasar that was observed quasi-simultaneously by a suite of instruments across the elec- tromagnetic spectrum during two flaring states in April 2010 and August 2011 as well as a quiescent ...
Blanchard, Jay   +15 more
core   +1 more source

Coordinated Groundâ Based and Spaceâ Based Observations of Equatorial Plasma Bubbles [PDF]

open access: yes, 2020
This paper presents coordinated and fortuitous groundâ based and spaceborne observations of equatorial plasma bubbles (EPBs) over the South American area on 24 October 2018, combining the following measurements: Globalâ scale Observations of Limb and ...
Aa, Ercha   +6 more
core   +1 more source

Copy number variant analysis from exome data in 349 patients with epileptic encephalopathy

open access: yes, 2015
Infantile spasms (IS) and Lennox–Gastaut syndrome (LGS) are epileptic encephalopathies characterized by early onset, intractable seizures, and poor developmental outcomes.
Epilepsy Phenome/Genome Project & Epi4K Consortium
core   +1 more source

Inexact Arnoldi residual estimates and decay properties for functions of non-Hermitian matrices [PDF]

open access: yes, 2019
This paper derives a priori residual-type bounds for the Arnoldi approximation of a matrix function together with a strategy for setting the iteration accuracies in the inexact Arnoldi approximation of matrix functions.
Pozza S., Simoncini V.
core   +1 more source

Molecular profiling of immunoglobulin heavy-chain gene rearrangements unveils new potential prognostic markers for multiple myeloma patients [PDF]

open access: yes, 2020
Multiple myeloma is a heterogeneous disease whose pathogenesis has not been completely elucidated. Although B-cell receptors play a crucial role in myeloma pathogenesis, the impact of clonal immunoglobulin heavy-chain features in the outcome has not been
Alcoceba, Miguel   +26 more
core   +3 more sources

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