Results 31 to 40 of about 2,666,833 (318)
Electrospinning Fundamentals: Optimizing Solution and Apparatus Parameters [PDF]
Journal of Visualized Experiments, 2011 Electrospun nanofiber scaffolds have been shown to accelerate the maturation, improve the growth, and direct the migration of cells in vitro. Electrospinning is a process in which a charged polymer jet is collected on a grounded collector; a rapidly rotating collector results in aligned nanofibers while stationary collectors result in randomly oriented
Leach, Michelle K. +3 more
openaire +2 more sources
Open Astronomy, 2011 Interstellar extinction is investigated in a 1.5 square degree area of the Cepheus Flare in the direction of the dark cloud TGU 619 at ℓ=102.5°, b=+15.5°.
Zdanavičius K. +4 more
doaj +1 more source
Fundamental parameters of Be stars located in the seismology fields of COROT [PDF]
, 2005 In preparation for the COROT space mission, we determined the fundamental parameters (spectral type, temperature, gravity, vsini) of the Be stars observable by COROT in its seismology fields (64 Be stars).
A.-M. Hubert +49 more
core +5 more sources
Fundamental Parameters of the W Serpentis Stars [PDF]
International Astronomical Union Colloquium, 1989 AbstractApplication of digital cross-correlation spectroscopy to the spectra of the W Serpentis binaries SX Cas and RX Cas has allowed an accurate determination of the orbits and rotations of the (mass-losing) K-subgiant secondary components. The distortion of the primary radial-velocity curves due to the influence of the prominent accretion disks in ...
J. Andersen, B. Nordström
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Setting Up of the Strömvil System Standards and Standard Regions
Open Astronomy, 2003 CCD photometry of standard areas of the seven-color Strömvil photometric system in some open and globular clusters is described. The primary standards are being measured with a two-channel photoelectric photometer on the 1.5 meter telescope on Mt. Lemmon.
Philip A. G. Davis +3 more
doaj +1 more source
The First Comprehensive Photometric Study of the Neglected Binary System V345 Cassiopeiae [PDF]
Journal of Astronomy and Space Sciences, 2013 We present the first BVRI CCD photometric observations of V345 Cas made on 22 nights during the observing seasons in 2007-2008. Our light curves, resembling those of EB-type binary stars, are analyzed with the 2003 version of the Wilson- Devinney ...
Min-Ji Jeong, Chun-Hwey Kim
doaj +1 more source
Fundamental Geodetic Parameters 1999 [PDF]
Highlights of Astronomy, 2002 AbstractThe present (2000) set of primary “constants” and “current best estimates” is being reviewed. The emphasis within IUGG is on the consideration and numerical evaluation of temporal changes of relevant parameters. The accuracy of many parameters has been substantially improved, but many numerical values did not change significantly. Therefore, to
openaire +1 more source
Some Photometric Characteristics of Population II Orbital Visual Binary Stars
Open Astronomy, 2003 A MV ,B−V diagram for metal-deficient, kinematically selected thick disk and halo visual binary stars with known orbits is presented. The magnitude differences Δm between the components are analyzed.
Bartkevičius A., Gudas A.
doaj +1 more source
The First Photometric Study of NSVS 1461538: A New W-subtype Contact Binary with a Low Mass Ratio and Moderate Fill-out Factor [PDF]
Journal of Astronomy and Space Sciences, 2016 New multiband BVRI light curves of NSVS 1461538 were obtained as a byproduct during the photometric observations of our program star PV Cas for three years from 2011 to 2013.
Hyoun-Woo Kim +4 more
doaj +1 more source
New limit on fundamental weak-interaction parameters from superallowed beta decay [PDF]
, 2004 A new critical survey of all world data on superallowed beta decays provides demanding tests of, and tight constraints on, the weak interaction. In confirmation of the conserved vector current (CVC) hypothesis, the vector coupling coupling constant is ...
Hardy, J. C., Towner, I. S.
core +3 more sources