Results 31 to 40 of about 269 (256)

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

open access: yesFEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin   +12 more
wiley   +1 more source

Coincidence between Rotational Modulations of Coronal and Photospheric Activities on the Saturated Star AB Dor

open access: yesThe Astronomical Journal
The magnetic connection among different layers is observed on the Sun and plays a key role in solar activity. It is also expected to be common on other active stars.
Fu-Kun Xu, Shenghong Gu
doaj   +1 more source

Stellar chromospheres and coronae

open access: yesThe Astrophysical Journal, 1981
The basic structural features of the solar chromosphere and corona are identified either with physical properties of the plasma or with properties of the energy input. It is argued that those properties identified with plasma physics should be relatively invariant whereas those identified with the energy input should vary from star to star.
openaire   +1 more source

On the dividing line for stellar coronae

open access: yesThe Astrophysical Journal, 1986
A possible explanation is proposed for the observation that late-type stars falling in a certain region of the H-R diagram exhibit no X-ray emission and hence appear not to have coronae. It is argued that, due to the low surface gravity of these stars, the hot X-ray emitting loops in their atmospheres simply become cool and emit at longer wavelengths ...
S. K. Antiochos   +2 more
openaire   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

Quiescent and Flaring States of Three Active Stars: V834 Tau, LQ Hya, and BY Dra

open access: yesThe Astrophysical Journal
We present a detailed X-ray study of the quiescent and flaring coronae of three active main-sequence K-type stars, V834 Tau, LQ Hya, and BY Dra, using XMM-Newton observations.
Gurpreet Singh   +2 more
doaj   +1 more source

CX3CL1 in Early Detection of Alzheimer's Disease: Plasma Dynamics Across Age and Disease Stages

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Backgrounds Alzheimer's disease (AD) is characterized by amyloid‐beta plaques, tau tangles, and neuroinflammation. C‐X3‐C motif chemokine ligand 1 (CX3CL1, also known as fractalkine), a neuroimmune chemokine implicated in AD pathogenesis, shows inconsistent alterations in plasma/serum across studies.
Ling Wang   +6 more
wiley   +1 more source

The Carbon Star DY Persei May Be a Cool R Coronae Borealis Variable

open access: yesThe Astrophysical Journal, 2023
Optical and near-IR photometry suggests that the carbon star DY Persei exhibits fadings similar to those of R Coronae Borealis (RCB) variables. Photometric surveys of the Galaxy and Magellanic Clouds uncovered new DY Per variables with infrared ...
D. A. García-Hernández   +5 more
doaj   +1 more source

Nebular observations and stellar coronae

open access: yesThe Astrophysical Journal, 1978
We examine the ways in which nebular observations of He II lambda4686 can be used to infer the existence of coronae or hot winds of early-type stars. The O VI lambdalambda3811, 3834 doublet is seen in the spectra of some central stars of planetary nebulae, and several authors have considered this to be evidence of a coronal wind.
L. Hartmann, J. C. Raymond
openaire   +1 more source

Gyrosynchrotron Emission from Stellar Coronae [PDF]

open access: yesSymposium - International Astronomical Union, 2000
We analyze quiescent radio spectra of main-sequence cool stars in terms of a simple gyrosynchrotron model. We find that the underlying (assumed) power-law electron distribution is often very hard, with power-law indices (in dN/dE ∝ E−δ) mostly around δ ≍2–3.5.
M. Güdel, A. Zucker
openaire   +1 more source

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