Results 61 to 70 of about 2,666,833 (318)

On the Nature of the Core of α Centauri A: The Impact of the Metallicity Mixture

open access: yesFrontiers in Astronomy and Space Sciences, 2019
Forward asteroseismic modeling plays an important role toward a complete understanding of the physics taking place in deep stellar interiors. With a dynamical mass in the range over which models develop convective cores while in the main sequence, the ...
Benard Nsamba   +9 more
doaj   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou   +10 more
wiley   +1 more source

Calibration of the Strömvil Photometric System

open access: yesOpen Astronomy, 2003
A calibration of color indices of the Strömvil photometric system in terms of physical parameters of stars is presented. The calibration is based on photoelectric photometry of about 1000 stars with known effective temperatures, distances, gravities and ...
Kazlauskas A.   +6 more
doaj   +1 more source

Fundamental Seismic Parameters of Injected CO2 [PDF]

open access: yesASEG Extended Abstracts, 2007
When CO2 is injected into a saline aquifer, its flow is controlled by the rock permeability, porosity, chemical composition and fluids, and its state-of-phase which is controlled by the reservoir pressure and temperature conditions. During the injection procedure, CO2 dissolves in the formation water and with time this increasing dissolution enhances ...
Nasser Keshavarz Faraj Khah   +1 more
openaire   +1 more source

Predicting the Future Burden of Renal Replacement Therapy in Türkiye Using National Registry Data and Comparative Modeling Approaches

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic kidney disease is a growing public health problem worldwide, and the number of patients requiring renal replacement therapy is steadily increasing. Türkiye has experienced a similar rise in both the incidence and prevalence of renal replacement therapy over the past decades; however, national‐level projections of future ...
Arzu Akgül   +2 more
wiley   +1 more source

Interstellar Extinction in the Gaia Photometric Systems

open access: yesOpen Astronomy, 2003
Three medium-band photometric systems proposed for the Gaia space mission are intercompared in determining color excesses for stars of spectral classes from O to M at V = 18 mag.
Bridžius A., Vansevičius V.
doaj   +1 more source

Fundamental stellar parameters

open access: yes, 2004
I present a discussion of fundamental stellar parameters and their observational determination in the context of interferometric measurements with current and future optical/infrared interferometric facilities. Stellar parameters and the importance of their determination for stellar physics are discussed.
openaire   +2 more sources

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Multiwavelength SED as a Tool in Understanding Outbursts of Symbiotic Binaries

open access: yesOpen Astronomy, 2012
Symbiotic binaries consist of a few sources of radiation contributing to spectral energy distribution (SED) from hard X-rays to radio wavelengths.
Skopal A.
doaj   +1 more source

An empirical calibration to estimate cool dwarf fundamental parameters from H-band spectra [PDF]

open access: yes, 2015
Interferometric radius measurements provide a direct probe of the fundamental parameters of M dwarfs, but is within reach for only a limited sample of nearby, bright stars. We use interferometrically-measured radii, bolometric luminosities, and effective
Charbonneau, David   +3 more
core   +3 more sources

Home - About - Disclaimer - Privacy