Results 31 to 40 of about 1,880,232 (279)

The Influence of Binary Interactions in Infrared passbands of populations [PDF]

, 2010
In our evolutionary population synthesis models, the samples of binaries are reproduced by the 'patched' Monte Carlo simulation and the stellar masses, integrated J, H, K, L, L2 and M magnitudes, mass-to-light ratios and broad colours involving infrared ...
Barmby, Bessell, Brodie, Bruzual, Bruzual, Cardelli, Chabrier, Eggleton, Fenghui Zhang, Frogel, Frogel, Harris, Hurley, Hurley, Kroupa, Lifang Li, Maraston, Maraston, Maraston, Miller, Miller, Persson, Rettura, Salpeter, Schlegel, Searale, van den Bergh, Worthey, Zhang, Zhang, Zhang, Zhanwen Han   +31 more
core   +1 more source

Photoplethysmogram based vascular aging assessment using the deep convolutional neural network

Scientific Reports, 2022
Arterial stiffness due to vascular aging is a major indicator during the assessment of cardiovascular risk. In this study, we propose a method for age estimation by applying deep learning to a photoplethysmogram (PPG) for the non-invasive assessment of ...
Hangsik Shin, Gyujeong Noh, Byung-Moon Choi   +2 more
doaj   +1 more source

Neukum Crater in Noachis Terra, Mars: Absolute Model Ages and Stratigraphy

, 2018
We geologically mapped the Neukum crater in Noachis Terra, Mars, using a variety of data sets (e.g., HRSC, CTX, MOC, HiRISE, THEMIS, CRISM, and MOLA), and identified 21 geomorphologic units. Several plains units on the crater floor show distinct morphologies (smooth, rough, hummocky, furrowed), albedo, surface roughness, and thermal inertia, and are ...
Hiesinger, H., Bernhardt, H., Reiss, Dennis, Tirsch, Daniela, Jaumann, Ralf, Hauber, Ernst, Head, J.W., Michael, G., Williams, D.A., Bishop, Janice L., Poulet, Francois, Muller, Jan-Peter, Gross, C., Gwinner, Klaus, Adeli, Solmaz, Fanara, Lida   +15 more
openaire   +2 more sources

Fine structure of the age-chromospheric activity relation in solar-type stars I: The Ca II infrared triplet: Absolute flux calibration

, 2016
Strong spectral lines are useful indicators of stellar chromospheric activity. They are physically linked to the convection efficiency, differential rotation, and angular momentum evolution and are a potential indicator of age. However, for ages > 2 Gyr,
de Mello, Gustavo F. Porto, Dutra-Ferreira, Letícia, Lorenzo-Oliveira, Diego, Ribas, Ignasi   +3 more
core   +1 more source

NGC 2419, M92, and the Age Gradient in the Galactic Halo [PDF]

, 1997
The WFPC2 camera on HST has been used to obtain deep main sequence photometry of the low-metallicity ([Fe/H]=-2.14), outer-halo globular cluster NGC 2419.
Bell, R. A., Bolte, M., Bond, H. E., Fahlman, G. G., Harris, W. E., Hesser, J. E., Richer, H. B., Stetson, P. B., VandenBerg, D. A., vandenBergh, S.   +9 more
core   +3 more sources

Surface Ages in the Vicinity of the Chang’e-6 Landing Site

Remote Sensing
The samples from lunar farside have great significance for the study of the Moon, and even the solar system. Chang’e-6 landed successfully on the southern mare of the Apollo basin and returned ~2 kg of samples from lunar farside.
Li Zhang, Jianzhong Liu, Gregory Michael, Ping Ge, Kaichang Di, Congzhe Wu, Kai Zhu, Xiaoxi Kang   +7 more
doaj   +1 more source

Quantification of Treatment Effect Modification on Both an Additive and Multiplicative Scale. [PDF]

PLoS ONE, 2016
BACKGROUND:In both observational and randomized studies, associations with overall survival are by and large assessed on a multiplicative scale using the Cox model.
Nicolas Girerd, Muriel Rabilloud, Philippe Pibarot, Patrick Mathieu, Pascal Roy   +4 more
doaj   +1 more source

The Clusters AgeS Experiment (CASE). IV. Analysis of the Eclipsing Binary V69 in the Globular Cluster 47 Tuc [PDF]

, 2009
We use photometric and spectroscopic observations of the eclipsing binary V69-47 Tuc to derive the masses, radii, and luminosities of the component stars.
A. Dotter, Anderson, Bahcall, Barnes, Blake, Bono, Boyajian, Casagrande, Chaboyer, Di Benedetto, Dotter, Etzel, G. S. Burley, Grevesse, I. B. Thompson, J. Kaluzny, Kaluzny, Kaluzny, Kaluzny, Kaluzny, Kaluzny, Kim, Koch, Korn, Lacy, Lacy, López-Morales, López-Morales, McLaughlin, Meibom, Neckel, Paczyński, Percival, Pietrinferni, Prŝa, Ramirez, S. M. Rucinski, Salaris, Salasnich, Sarajdeni, Schlegel, Serenelli, Spergel, Thompson, Torres, VandenBerg, VandenBerg, W. Krzeminski, W. Pych, Weldrake, Worthey, Zoccali   +51 more
core   +1 more source

The triple A model (age, absolute neutrophil count, absolute lymphocyte count‐AAA) predicts survival and thrombosis in polycythemia vera

American Journal of Hematology
To the Editor: BCR::ABL1-negative chronic myeloproliferative neoplasms (MPNs), polycythemia vera (PV), essential thrombocythemia (ET), and myelofibrosis are characterized by constitutive activation of the JAK-STAT signaling pathway caused by mutations in the Janus Kinase 2 (JAK2), carelticulin, or thrombopoetin receptor genes.
Ivan Krecak, Danijela Lekovic, Isidora Arsenovic, Hrvoje Holik, Ivan Zekanovic, Martina Moric Peric, Marko Lucijanic   +6 more
openaire   +2 more sources

Estimation of Multiple Sclerosis lesion age on magnetic resonance imaging

NeuroImage, 2021
We introduce the first-ever statistical framework for estimating the age of Multiple Sclerosis (MS) lesions from magnetic resonance imaging (MRI). Estimating lesion age is an important step when studying the longitudinal behavior of MS lesions and can be
Elizabeth M. Sweeney, Thanh D. Nguyen, Amy Kuceyeski, Sarah M. Ryan, Shun Zhang, Lily Zexter, Yi Wang, Susan A. Gauthier   +7 more
doaj   +1 more source