Astrometry of the main satellites of Uranus: 18 years of observations

We determine accurate positions of the main satellites of Uranus: Miranda, Ariel, Umbriel, Titania, and Oberon. Positions of Uranus, as derived from those of these satellites, are also determined. The observational period spans from 1992 to 2011. All runs were made at the Pico dos Dias Observatory, Brazil. We used the software called Platform for Reduction of Astronomical Images Automatically (PRAIA) to minimise (digital coronography) the influence of the scattered light of Uranus on the astrometric measurements and to determine accurate positions of the main satellites. The positions of Uranus were then indirectly determined by computing the mean differences between the observed and ephemeris positions of these satellites. A series of numerical filters was applied to filter out spurious data. These filters are mostly based on the comparison between the positions of Oberon with those of the other satellites and on the offsets as given by the differences between the observed and ephemeris positions of all satellites. We have, for the overall offsets of the five satellites, -29 (+/-63) mas in right ascension and -27 (+/-46) mas in declination. For the overall difference between the offsets of Oberon and those of the other satellites, we have +3 (+/-30) mas in right ascension and -2 (+/-28) mas in declination. Ephemeris positions for the satellites were determined from DE432+ura111. Comparisons using other modern ephemerides for the solar system -INPOP13c- and for the motion of the satellites -NOE-7-2013- were also made. They confirm that the largest contribution to the offsets we find comes from the motion of the barycenter of the Uranus system around the barycenter of the solar system, as given by the planetary ephemerides. Catalogues with the observed positions are provided.Comment: 13 pages, 21 figure

Catálogo de Teses da Universidade Federal da Bahia (1966 - 1976)

Este trabalho é uma atualização do "Catálogo de Teses, 1946-1966", publicado pela Escola de Biblioteconomia e Documentação da Universidade Federal da Bahia. Como no anterior, encontram-se relacionadas apenas as teses defendidas nesta Universidade. A organização deste Catálogo baseia-se na atual estrutura da UFBA, ou seja, com uma subdivisão em 5 áreas do conhecimento. Dentro dessas áreas, as teses apresentam-se conforme os graus para os quais foram defendidas, seguindo-se ainda uma ordem de cursos e assuntos, respectivamente. Para a discriminação dos assuntos, utilizou-se a Classificação Decimal Universal (CDU), levando-se também em consideração os Departamentos e Cursos aos quais as teses foram apresentadas. No final do Catálogo, encontram-se os índices de autores e de assuntos que facilitarão ao leitor, a localização mais rápida dos trabalhos de seu interesse, através de números de ordem das respectivas referências.Este trabalho é uma atualização do "Catálogo de Teses, 1946-1966", publicado pela Escola de Biblioteconomia e Documentação da Universidade Federal da Bahia. Como no anterior, encontram-se relacionadas apenas as teses defendidas nesta Universidade. A organização deste Catálogo baseia-se na atual estrutura da UFBA, ou seja, com uma subdivisão em 5 áreas do conhecimento. Dentro dessas áreas, as teses apresentam-se conforme os graus para os quais foram defendidas, seguindo-se ainda uma ordem de cursos e assuntos, respectivamente. Para a discriminação dos assuntos, utilizou-se a Classificação Decimal Universal (CDU), levando-se também em consideração os Departamentos e Cursos aos quais as teses foram apresentadas. No final do Catálogo, encontram-se os índices de autores e de assuntos que facilitarão ao leitor, a localização mais rápida dos trabalhos de seu interesse, através de números de ordem das respectivas referências

Impacto do tipo de fibrilhac¸ão auricular no contexto das síndromes coronárias agudas: características clínicas e prognóstico

INTRODUCTION: Atrial fibrillation (AF) is widely recognized as an adverse prognostic factor during acute myocardial infarction, although the impact of AF type - new-onset (nAF) or pre-existing (pAF) - is still controversial. OBJECTIVES: To identify the clinical differences and prognosis of nAF and pAF during acute coronary syndromes (ACS). METHODS: We performed a retrospective observational cohort study including 1373 consecutive patients (mean age 64 years, 77.3% male) admitted to a single center over a three-year period, with a six-month follow-up. RESULTS: AF rhythm was identified in 14.5% patients, of whom 71.4% presented nAF and 28.6% pAF. When AF types were compared, patients with nAF more frequently presented with ST-elevation ACS (p=0.003). Patients with pAF, in turn, were older (p=0.032), had greater left atrial diameter (p=0.001) and were less likely to have significant coronary lesions (p=0.034). Regarding therapeutic strategy, nAF patients were more often treated by rhythm control during hospital stay (p<0.001) and were less often anticoagulated at discharge (p=0.001). Compared with the population without AF, nAF was a predictor of death during hospital stay in univariate (p<0.001) and multivariate analysis (OR 2.67, p=0.047), but pAF was not. During follow-up, pAF was associated with higher mortality (p=0.014), while nAF patients presented only a trend towards worse prognosis. CONCLUSIONS: AF during the acute phase of ACS appears to have a negative prognostic impact only in patients with nAF and not in those with pAF

Health-related quality of life and utilities in gastric premalignant conditions and malignant lesions: a multicentre study in a high prevalence country

BACKGROUND AND AIMS: A recent review of economic studies relating to gastric cancer revealed that authors use different tests to estimate utilities in patients with and without gastric cancer. Our aim was to determine the utilities of gastric premalignant conditions and adenocarcinoma with a single standardized health measure instrument. METHODS: Cross-sectional nationwide study of patients undergoing upper endoscopy (n=1,434) using the EQ-5D-5L quality of life (QoL) questionnaire. RESULTS: According to EQ-5D-5L, utilities in individuals without gastric lesions were 0.78 (95% confidence interval: 0.76-0.80), with gastric premalignant conditions 0.79 (0.77-0.81), previously treated for gastric cancer 0.77 (0.73-0.81) and with present cancer 0.68 (0.55-0.81). Self-reported QoL according to the visual analogue scale (VAS) for the same groups were 0.67 (0.66-0.69), 0.67 (0.66-0.69), 0.62 (0.59-0.65) and 0.62 (0.54-0.70) respectively. Utilities were consistently lower in women versus men (no lesions 0.71 vs. 0.78; premalignant conditions 0.70 vs. 0.82; treated for cancer 0.72 vs. 0.78 and present cancer 0.66 vs. 0.70). CONCLUSION: The health-related QoL utilities of patients with premalignant conditions are similar to those without gastric diseases whereas patients with present cancer show decreased utilities. Moreover, women had consistently lower utilities than men. These results confirm that the use of a single standardized instrument such as the EQ-5D-5L for all stages of the gastric carcinogenesis cascade is feasible and that it captures differences between conditions and gender dissimilarities, being relevant information for authors pretending to conduct further cost-utility analysis