Selected photometric bands, spatial resolution, disk dimension in the frame and the scanned sky background level are determined in order to establish galactic structural parameters. A crude analysis could lead to erroneous results. Possible causes of error, as well as the minimum requirements for a precise determination of parameters, will be

Recent progress on the structure and dynamics of bulges is reviewed. Those aspects that link galaxy bulges either to oblate spheroids akin to elliptical galaxies or to rapidly-rotating, flattened systems more nearly resembling the products of disk internal transformations, are highlighted. The analysis of surface brightness profiles derived from

Not Available

Variations of temperature values for the last 20 000 years measured in the cave Dos Anas (Sierra del Rosario Cuba) are studied in comparison with the values of the hydrogen isotopes concentration obtained in the coral reef of the Barbados Island in the Caribbean region. They are compared as well with the abundance of Be10 measured in the permanent

Not Available

We based on two interferometric modern techniques: Electronic Speckle Pattern Interferometry and Fringe Projection Technique we had realized simulations of interferograms for both rough aspherics surfaces around five microns and five meters in diameter up. Experimental interferometric setup is proposed and developed software which we reached our