We present JHK S observations of 22 intermediate-mass stars in the Scorpius-Centaurus OB association, obtained with the NAOS/CONICA system at the ESO Very Large Telescope. This survey was performed to determine the status of (sub)stellar candidate companions of Sco OB2 member stars of spectral type A and late-B. The distinction between companions and background stars is made on the basis of a c...

Tobacco-smoke is associated with 75-90% of LC cases and ~50% occurs in developing countries (Parkin, et al. 2005; Parkin, et al. 1994). Several studies have demonstrated that organic and inorganic compounds are related with the development of cancer, including LC (Bradley and Golden 2006; De Palma, et al. 2008; Stavrides 2006). The association between cigarette smoking and various types of resp...

Both the ADONIS (at ESO) and PUEO (at CFHT) adaptive optics systems have been in general use for several years, totalizing over 400 nights of scheduled observing time. They are routinely producing near-infrared diffraction-limited images under reasonable seeing conditions and a significant number of papers have now been published reporting astrophysical results obtained with adaptive optics. In...

Context. Sirius is the brightest star in the sky and a strong source of diffuse light for modern telescopes so that the immediate surroundings of the star are still poorly known. Aims. We study the close surroundings of the star (2 to 25′′) by means of adaptive optics and coronographic device in the near-infrared, using the ESO/ADONIS system. Methods. The resulting high contrast images in the J...

objectives: the objective of this study was to analyze the fatty acid content, antioxidant, and antibacterial activities of hydro-methanolic extract of adonis wolgensis l. (a. wolgensis l.) growing wild in north of iran. materials and methods: oils of a. wolgensis l. was obtained by means of soxhlet apparatus from leaves and stems. methyl esters were derived from the oily mixtures by trans-este...