Results 91 to 100 of about 11,728,534 (352)

Interstellar Extinction in the Direction of The Barnard 1 Dark Cloud in Perseus

Open Astronomy, 2003
Spectral and luminosity classes, absolute magnitudes, color excesses, interstellar extinctions and distances are determined for 98 stars down to 18 mag in the Barnard 1 dark cloud belonging to the Per OB2 association. The classification of stars is based
Černis K., Straižys V.
doaj   +1 more source

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

Frontiers 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, Benard Nsamba, Tiago L. Campante, Tiago L. Campante, Mário J. P. F. G. Monteiro, Mário J. P. F. G. Monteiro, Margarida S. Cunha, Margarida S. Cunha, Sérgio G. Sousa, Sérgio G. Sousa   +9 more
doaj   +1 more source

Nonlinear estimation of the fundamental matrix with minimal parameters [PDF]

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2004
The purpose of this paper is to give a very simple method for nonlinearly estimating the fundamental matrix using the minimum number of seven parameters. Instead of minimally parameterizing it, we rather update what we call its orthonormal representation, which is based on its singular value decomposition.
Bartoli, Adrien, Sturm, Peter
openaire   +3 more sources

A Cre‐dependent lentiviral vector for neuron subtype‐specific expression of large proteins

FEBS Letters, EarlyView.
We designed a versatile and modular lentivector comprising a Cre‐dependent switch and self‐cleaving 2A peptide and tested it for co‐expression of GFP and a 2.8 kb gene of interest (GOI) in mouse cortical parvalbumin (PV+) interneurons and midbrain dopamine (TH+) neurons.
Weixuan Xue, Sandrine Picaud, Régine Hepp, Stéphanie Pons, Uwe Maskos, Bertrand Lambolez, Ludovic Tricoire   +6 more
wiley   +1 more source

Calibration of the Strömvil Photometric System

Open 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., Straižys V., Boyle R. P., Philip A. G. Davis, Laugalys V., Černis K., Sperauskas J.   +6 more
doaj   +1 more source

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., Feng, Zhang-Qi, Tuck, Samuel J., Corey, Joseph M.   +3 more
openaire   +2 more sources

Operational definition of (brane induced) space-time and constraints on the fundamental parameters [PDF]

, 1999
First we contemplate the operational definition of space-time in four dimensions in light of basic principles of quantum mechanics and general relativity and consider some of its phenomenological consequences.
Michael Maziashvili, Heisenberg, Blokhintsev, Wigner, Salecker, Alden Mead, Alden Mead, Alden Mead, Padmanabhan, Maggiore, Ahluwalia, Amelino-Camelia, Ng, Sasakura, Fock, Landau, Károlyházy, Károlyházy, Károlyházy, Maziashvili, Cohen, Bekenstein, Bekenstein, Bekenstein, Bekenstein, 't Hooft, Perlmutter, Riess, Maziashvili, Cai, Wei, Wei, Wu, Lieu, Lieu, Ragazzoni, Ng, Christiansen, Steinbring, Coule, Born, Arkani-Hamed, Rubakov, Akama, Barnaveli, Barnaveli, Greisen, Zatsepin, Arkani-Hamed, Amelino-Camelia, Gaidos, Biller, Schaefer, Dienes   +53 more
core   +2 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Interstellar Extinction in the Gaia Photometric Systems

Open 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

The fundamental parameters of the roAp star α Circini [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
Abstract We have used the Sydney University Stellar Interferometer to measure the angular diameter of α Cir. This is the first detailed interferometric study of a rapidly oscillating A (roAp) star, α Cir being the brightest member of its class.
Bruntt, H., North, J. R., Cunha, M., Brandão, I. M., Elkin, V. G., Kurtz, D. W., Davis, J., Bedding, T. R., Jacob, A. P., Owens, S. M., Robertson, J. G., Tango, W. J., Gameiro, J. F., Ireland, M. J., Tuthill, P. G.   +14 more
openaire   +3 more sources