Results 31 to 40 of about 744 (92)

Animal models of pulmonary hypertension: Getting to the heart of the problem

British Journal of Pharmacology, Volume 179, Issue 5, Page 811-837, March 2022., 2022
Despite recent therapeutic advances, pulmonary hypertension (PH) remains a fatal disease due to the development of right ventricular (RV) failure. At present, no treatments targeted at the right ventricle are available, and RV function is not widely considered in the preclinical assessment of new therapeutics.
Joshua P. Dignam, Tara E. Scott, Barbara K. Kemp‐Harper, Adrian J. Hobbs   +3 more
wiley   +1 more source

Unmixing Mineral Abundance and Mg# With Radiative Transfer Theory: Modeling and Applications

Journal of Geophysical Research: Planets, Volume 126, Issue 2, February 2021., 2021
Abstract Mineral abundance and Mg# (100× molar Mg/(Mg + Fe)) are significant in understanding the crustal composition and thermal history of the Moon. In this study, we derive a new set of optical constants for olivine, orthopyroxene, and clinopyroxene using radiative transfer equations that include soil porosity and the opposition effect. Based on the
Lingzhi Sun, Paul G. Lucey
wiley   +1 more source

Collective relaxation of stellar systems revisited [PDF]

, 2009
The chaos in stellar systems is studied using the theory of dynamical systems and the Van Kampen stochastic differential equation approach. The exponential instability (chaos) of spherical N-body gravitating systems, already known previously, is ...
A. A. Kocharyan, Ambartsumian, Capozziello, Casetti, Chandrasekhar, Chandrasekhar, El-Zant, Fermi, Gurzadyan, Gurzadyan, Gurzadyan, Gurzadyan, Lang, Laskar, Lynden-Bell, Miller, V. G. Gurzadyan, Van Kampen   +17 more
core   +1 more source

The effect of continuum scattering processes on spectral line formation [PDF]

, 1999
The effect of scattering processes in the continuum on the formation of spectral lines in a static atmosphere with an arbitrary distribution of the internal energy sources is investigated using Ambartsumian's principle of invariance.
G Israelian, Haruthyunian, Haruthyunian, Israelian, Nikoghossian, Nikoghossian, Schuster   +6 more
core   +2 more sources

The Internal Dynamics of Globular Clusters [PDF]

, 1999
Galactic globular clusters are ancient building blocks of our Galaxy. They represent a very interesting family of stellar systems in which some fundamental dynamical processes have been taking place for more than 10 Gyr, but on time scales shorter than ...
Meylan, G.
core   +2 more sources

Dissecting the Colour-Magnitude Diagram: A Homogeneous Catalogue of Stellar Populations in Globular Clusters [PDF]

, 2011
We present a homogeneous catalogue for blue straggler, red giant branch, horizontal branch and main-sequence turn-off stars in a sample of 35 clusters taken from the ACS Survey for Globular Clusters.
Alison Sills, Ambartsumian, Anderson, Applegate, Beccari, Beers, Buonanno, Carretta, Chernoff, Christian Knigge, Cohen, Davies, De Angeli, De Marchi, Dervisoglu, Djorgovski, Dotter, Dotter, Farouki, Ferraro, Fregeau, Fregeau, Fukushige, Fusi, Fusi, Gieles, Gieles, Goldsbury, Harris, Heggie, Henon, Henon, Hut, Iannicola, Iben, King, Knigge, Kruijssen, Lanzoni, Lee, Leigh, Leigh, Leigh, Leigh, Leonard, Leonard, Li, Mapelli, Mathieu, McCrea, McLaughlin, McLaughlin, Meylan, Murray, Nathan Leigh, Pancino, Perets, Peterson, Piotto, Portegies, Rood, Sandage, Sandage, Sandquist, Sandquist, Sarajedini, Saviane, Shara, Sigurdsson, Sills, Sills, Sills, Spitzer, Spitzer, Spitzer, Spitzer, Spitzer, Trenti, Webbink, Zinn   +79 more
core   +1 more source

A Method of Finding Source Function for Inverse Diffusion Problem with Time‐Fractional Derivative

Advances in Mathematical Physics, Volume 2016, Issue 1, 2016., 2016
The Homotopy Perturbation Method is developed to find a source function for inverse diffusion problem with time‐fractional derivative. The inverse problem is with variable coefficients and initial and boundary conditions. The analytical solutions to the inverse problems are obtained in the form of a finite convergent power series with easily obtainable
Vildan Gülkaç, Ricardo Weder
wiley   +1 more source

Escape of stars from gravitational clusters in the Chandrasekhar model [PDF]

, 2010
We study the evaporation of stars from globular clusters using the simplified Chandrasekhar model. This is an analytically tractable model giving reasonable agreement with more sophisticated models that require complicated numerical integrations.
Aarseth, Ambartsumian, Antonov, Barge, Bettwieser, Binney, Bracco, Chandrasekhar, Chandrasekhar, Chavanis, Chavanis, Chavanis, Chavanis, Cohn, Hjorth, Hénon, Hénon, Hénon, Hénon, Inagaki, King, King, King, Kramers, Lancellotti, Larson, Lightman, Lynden-Bell, Lynden-Bell, Lynden-Bell, Meylan, Michie, Mohammed Lemou, Padmanabhan, Pierre-Henri Chavanis, Spitzer, Spitzer, Spitzer, Spitzer, Spitzer, Stiavelli, van Albada   +41 more
core   +3 more sources

Modified Theories of Gravitation behind the Spacetime Deformation

Physics Research International, Volume 2015, Issue 1, 2015., 2015
In the framework of proposed theory of spacetime deformation/distortion, we have a way to deform the spacetime through a nontrivial choice of the distortion‐complex, displaying different connections, which may reveal different post‐Riemannian spacetime structures as corollary. We extend this theory to address, in particular, the gauge model of the most
Gagik Ter-Kazarian, Bennie F. L. Ward
wiley   +1 more source

The distinction between star clusters and associations

, 2010
In Galactic studies a distinction is made between (open) star clusters and associations. For barely resolved objects at a distance of several Mpc this distinction is not trivial to make. Here we provide an objective definition by comparing the age of the
Ambartsumian, Blaauw, Bressert, Elmegreen, Gieles, Gieles, Kroupa, Lada, Mark Gieles, Portegies Zwart, Simon F. Portegies Zwart   +10 more
core   +1 more source