Browsing by Issue Date Facultad de Ciencias Físicas y Matemáticas
Now showing items 101-120 of 20579
-
(1997-12)In this paper, the classical problem of homogenization of elliptic operators in arbitrary domains with periodically oscillating coe cients is considered. Using Bloch wave decomposition, a new proof of convergence is ...
-
(1997-12-10)Hubble Space Telescope, IUE, and ground-based observations of the central star of the LMC planetary nebula N66 (CS N66), obtained in di†erent epochs, are presented. Since 1990, CS N66 has displayed remarkable short- and ...
-
(Emerald, 1998)
-
(Blackwell Munksgaard, 1998)The crystal structure of the title complex, [Ni(C3H4-N2)6]CO3.5H 2O, which is isostructural with the Cd, Co and Ru analogues, is built up from cationic and anionic sheets parallel to the basal plane of the hexagonal unit ...
-
(Elsevier, 1998)From a microeconomic viewpoint, the so-called modal utility in discrete choice models is a conditional indirect utility function, which represents the maximum level of satisfaction that can be reached at given prices and ...
-
(1998)The aim of this work is to derive rate of convergence estimates for the spectral approximation of a mathematical model which describes the vibrations of a solid-fluid type structure. First, we summarize the main ...
-
(Universidad de Chile, 1998)
-
(Universidad de Chile, 1998)
-
(Universidad de Chile, 1998)
-
(UNIV CHICAGO PRESS., 1998-01)We present UBV RI light curves for the bright Type Ia supernovae SN 1990N in NGC 4639 and SN 1991T in NGC 4527, based on photometry gathered in the course of the Cala n/Tololo supernova program. Both objects have ...
-
(UNIV CHICAGO PRESS, 1998-02)We present Tully-Fisher (T-F) observations for nine rich Abell clusters of galaxies. This is the second such data installment of an all-sky survey of similar to 50 clusters in the redshift range 0.02 less than or similar ...
-
(GAUTHIER-VILLARS/EDITIONS ELSEVIER, 1998-02)We consider a second-order elliptic equation in a bounded periodic heterogeneous medium and study the asymptotic behavior of its spectrum, as the structure period goes to zero. We use a new method of Bloch wave homogenization ...
-
(1998-02-10)Long-slit medium-resolution spectra are used to study the continuum and ionization properties of the gas in the Seyfert 1 galaxies F10.01 and A08.12. We Ðnd that the nuclear underlying continuum can be described by a ...
-
(SIAM PUBLICATIONS, 1998-03)This paper is devoted to the asymptotic analysis of the spectrum of a mathematical model that describes the vibrations of a coupled fluid-solid periodic structure. In a previous work [Arch. Rational Mech. Anal., 135 (1996), ...
-
(UNIV CHICAGO PRESS, 1998-05-10)SN 1997D in NGC 1536 is possibly the least luminous and energetic Type II supernova discovered to date. The entire light curve is subluminous, never reaching M-v = -14.65. The radioactive tail follows the Co-56 decay slope. ...
-
(1998-06)An asymptotic study of two spectral models which appear in uid{solid vibrations is presented in this paper. These two models are derived under the assumption that the uid is slightly compressible or viscous, respectively. ...
-
(1998-07-10)We present high angular resolution VLA observations of the C92a, C110a, and C166a radio recombination lines of carbon from the region of massive star formation known as S88B. The observations reveal that the carbon ...
-
(The American Astronomical Society, 1998-08)