Results 71 to 80 of about 6,211,798 (244)

Searching for gamma-ray emission from stellar flares [PDF]

open access: yesMonthly notices of the Royal Astronomical Society
Flares from magnetically active dwarf stars should produce relativistic particles capable of creating γ-rays. So far, the only isolated main sequence star besides the Sun to have been detected in γ-rays is TVLM 513-46546.
Yuzhe Song, T. Paglione, E. Ilin
semanticscholar   +1 more source

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

open access: yesThe Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund   +4 more
wiley   +1 more source

Statistics of Solar White-light Flares. I. Optimization and Application of Identification Methods

open access: yesThe Astrophysical Journal
White-light flares (WLFs) are energetic activity in the stellar atmosphere. However, observed solar WLFs are relatively rare compared to stellar WLFs or solar flares observed at other wavelengths, which limits our further understanding of solar/stellar ...
Yingjie Cai   +3 more
doaj   +1 more source

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

open access: yesThe Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo   +5 more
wiley   +1 more source

Expert Perspectives: Defining and Managing Progressive Pulmonary Fibrosis in Systemic Sclerosis

open access: yesArthritis &Rheumatology, EarlyView.
Systemic sclerosis–associated interstitial lung disease (SSc‐ILD) is one of the leading causes of morbidity and mortality in SSc, affecting up to three‐quarters of patients. The disease course is highly heterogeneous, ranging from indolent, nonprogressive forms to rapidly progressive pulmonary fibrosis (PPF).
Devis Benfaremo   +7 more
wiley   +1 more source

The solar-stellar connection - The relationship between flaring rates, flare power, and quiescent X-ray background

open access: yesThe Astrophysical Journal, 1988
Des correlations entre les diverses proprietes relatives a l'eruption stellaire sont obtenues pour les naines rouges. L'influence de ces correlations sur le processus eruptif et le chauffage coronal est etudiee. De telles relations sont aussi recherchees pour le Soleil mais elles ne sont pas toujours analogues a celles obtenues pour les naines ...
Richard A. Harrison   +2 more
openaire   +1 more source

Exploring the potential of cluster analysis in identifying disease phenotypes in CPPD: Moving from intuition to insight

open access: yesArthritis &Rheumatology, Accepted Article.
Background Calcium pyrophosphate deposition (CPPD) disease is a heterogeneous condition and is frequently misdiagnosed due to the different clinical presentations and variable disease progression. Aim of this study is to identify clinical phenotypes of CPPD disease by integrating real‐world data from two datasets. Methods Data from the COLCHICORT trial
Greta Pellegrino   +20 more
wiley   +1 more source

X-ray spectroscopy of accreting black holes

open access: yes, 2014
Measuring black hole spin has become a key topic in astrophysics, and recent focus on the spin powering of jets in X-ray binaries has heightened the need for accurate measurements of spin.
Plant, Daniel
core   +1 more source

Human biomarker navigator

open access: yesiMeta, EarlyView.
The Human Biomarker Navigator integrates the disease continuum, biomarker dynamics, cross‐organ biomarker networks, biomarker classification, and technology‐driven paradigms. It maps how biomarkers link multi‐system physiology and pathology across the nervous, respiratory, endocrine, circulatory, immune, digestive, urinary, reproductive, and ...
Meng‐Yao Li   +29 more
wiley   +1 more source

A correlation between Balmer and soft X-ray emission from stellar and solar flares [PDF]

open access: yesInternational Astronomical Union Colloquium, 1989
SummarySimultaneous optical spectroscopy and X-ray monitoring of stellar and solar flares shows that a well-defined linear correlation exists between the integrated Hγ and soft X-ray flux that extends over four orders of magnitude. The existence of this relationship implies a direct proportionality between the emission from the cooler and denser ...
C.J. Butler, M. Rodono, B.H. Foing
openaire   +1 more source

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