66 research outputs found
Compactação ruminal e obstrução intestinal em bovinos, associadas ao consumo de Agave sisalana Perrine (Agavaceae)
Horizontal Branch Stars: The Interplay between Observations and Theory, and Insights into the Formation of the Galaxy
We review HB stars in a broad astrophysical context, including both variable
and non-variable stars. A reassessment of the Oosterhoff dichotomy is
presented, which provides unprecedented detail regarding its origin and
systematics. We show that the Oosterhoff dichotomy and the distribution of
globular clusters (GCs) in the HB morphology-metallicity plane both exclude,
with high statistical significance, the possibility that the Galactic halo may
have formed from the accretion of dwarf galaxies resembling present-day Milky
Way satellites such as Fornax, Sagittarius, and the LMC. A rediscussion of the
second-parameter problem is presented. A technique is proposed to estimate the
HB types of extragalactic GCs on the basis of integrated far-UV photometry. The
relationship between the absolute V magnitude of the HB at the RR Lyrae level
and metallicity, as obtained on the basis of trigonometric parallax
measurements for the star RR Lyrae, is also revisited, giving a distance
modulus to the LMC of (m-M)_0 = 18.44+/-0.11. RR Lyrae period change rates are
studied. Finally, the conductive opacities used in evolutionary calculations of
low-mass stars are investigated. [ABRIDGED]Comment: 56 pages, 22 figures. Invited review, to appear in Astrophysics and
Space Scienc
SĂntese de Ăłxidos mistos SiO2 /Mn xOy para aplicação na reação de redução de O2
ExigĂŞncias LĂquidas de Energia e ProteĂna de Tourinhos de Dois Grupos GenĂ©ticos Alimentados com Dietas de Alto Teor de Concentrado
Produção, composição do leite e constituintes sangĂĽĂneos de cabras alimentadas com diferentes volumosos
Avaliação dos parâmetros tempo, corrente e pressĂŁo na soldagem por resistĂŞncia elĂ©trica de compĂłsitos PEI/fibras contĂnuas: influĂŞncia na resistĂŞncia mecânica
Potentially inappropriate medication use among institutionalized elderly individuals in southeastern Brazil
CaracterĂsticas da Carcaça e Qualidade da Carne de Tourinhos Alimentados com Dietas de Alta Energia
Preliminary in vitro assessment of the potential toxicity and antioxidant activity of Ceiba speciosa (A. St.-Hill) Ravenna (Paineira)
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