Uma pesquisa em periódicos, congressos e livros, sobre contabilidade e gestão nas áreas de turismo e hotelaria

TCC (Graduação) - Universidade Federal de Santa Catarina. Centro Socioeconômico. Curso de Ciências ContábeisNesta monografia, que tem como objetivo, servir como um guia ao leitor que queira pesquisar nesta área, buscou-se pesquisar, através de livros, congressos e revistas, sobre a área da contabilidade e gerência em empresas turísticas e hoteleiras. Durante a realização deste trabalho, foram pesquisados, os mais importantes periódicos e congressos na área da Administração e da Contabilidade, foram eles o ENANPAD, Congresso Brasileiro de Custos, o Congresso Brasileiro de Contabilidade, a Revista do CRC de vários estados, a Revista do Conselho Regional de Contabilidade, a Revista de Contabilidade e Finanças, as Revistas de Administração da USP e da FGV, Revista de administração contemporânea e a Revista de Organização e Sociedade. Depois de analisados e apresentados todos os artigos encontrados sobre turismo e hotelaria nos periódicos e congressos, chegou-se a conclusão que muito poucos artigos são publicados na área de contabilidade hoteleira, portanto, em uma segunda etapa buscou-se analisar artigos do Portal Capes

Cosmological Time Dilation in Durations of Swift Long Gamma-Ray Bursts

Cosmological time dilation is a fundamental phenomenon in an expanding universe, which stresses that both the duration and wavelength of the emitted light from a distant object at the redshift $z$ will be dilated by a factor of $1+z$ at the observer. By using a sample of 139 \emph{Swift} long GRBs with known redshift ($z\leq8.2$), we measure the observed duration ($T_{90}$) in the observed energy range between $140/(1+z)$ keV and $350/(1+z)$ keV, corresponding to a fixed energy range of 140-350 keV in the rest frame. We obtain a significant correlation between the duration and the factor $1+z$, i.e., $T_{\rm{90}}=10.5(1+z)^{0.94\pm0.26}$, which is well consistent with that expected from cosmological time dilation effect.Comment: 19 pages, 7 figures, 1 table. Accepted for publication in ApJ

Validación de un test para verificar si el alumno posee concepciones científicas sobre calor, temperatura y energía interna

This study is a continuation of the task of validating a paper and pencil test to check whether the student has scientific conceptions about heat, temperature and internal energy in which we are working since 1989. The third version of this instrument is presented here. Previous versions (Silveira, Moreira and Axt, 1990,1991) were modified after an analysis of internal consistency carried out with additional data provided by 168 students of introductory physics at UFRGS. The present version is constituted by 23 items, which might be divided into three groups, each one corresponding to one of the three concepts: heat, temperature and internal energy. This division is based on a logical content analysis as well as on an empirical analysis of students' responses

Habilidad en preguntas conceptuales y en resolución de problemas de Física

This study is described correlating the perfomance of engineering students in basically conceptual physics quizzes with their performance in physics exams constituted essentially by problem solving items. Research findings clearly suggest that mastery of concepts in a necessary but not sufficient condition for problem solving

Crystal structure of Pseudomonas aeruginosa lipase in the open conformation - The prototype for family I.1 of bacterial lipases

The x-ray structure of the lipase from Pseudomonas aeruginosa PAO1 has been determined at 2.54 Angstrom resolution. It is the first structure of a member of homology family I.1 of bacterial lipases. The structure shows a variant of the alpha/beta hydrolase fold, with Ser(82), Asp(229), and His(251) as the catalytic triad residues. Compared with the "canonical" alpha/beta hydrolase fold, the first two P-strands and one alpha-helix (alpha E) are not present. The absence of helix alpha E allows the formation of a stabilizing intramolecular disulfide bridge. The loop containing His251 is stabilized by an octahedrally coordinated calcium ion. On top of the active site a lid subdomain is in an open conformation, making the catalytic cleft accessible from the solvent region. A triacylglycerol analogue is covalently bound to Ser(82) in the active site, demonstrating the position of the oxyanion hole and of the three pockets that accommodate the sn-1, sn-2, and sn-3 fatty acid chains. The inhibited enzyme can be thought to mimic the structure of the tetrahedral intermediate that occurs during the acylation step of the reaction. Analysis of the binding mode of the inhibitor suggests that the size of the acyl pocket and the size and interactions of the sn-2 binding pocket are the predominant determinants of the regio- and enantio-preference of the enzyme

Gametogenesis in Madracis decactis Lyman, 1859 (Cnidaria, Scleractinia) from Ilha Grande Bay (Rio de Janeiro), southeastern Brazil

Collections were made every two months in Ilha Grande Bay, Rio de Janeiro, for 21 months (August/2004-May/2006) to study the gametogenesis of Madracis decactis Lyman, 1859. A total of 1800 polyps were examined using standard histological techniques. Madracis decactis is a hermaphroditic species whose male and female gametes develop within different mesenteries. Oogenesis begins in October, while spermatogenesis begins at the end of February, both reaching maturity at the end of April. The peak of reproductive activity occurred between February and April, when all the polyps were fertile, containing mainly stage III oocytes. Examination of fertile polyps indicated the simultaneous presence of stages I, II and III for oogenesis and I, II, III and IV for spermatogenesis. No embryos or planulae were observed in the histological sections. The gametes or planulae spawning may occur between April and May.Coletas foram feitas a cada dois meses na Baía de Ilha Grande, Rio de Janeiro, durante 21 meses (agosto/2004 - maio/2006) para estudar a gametogênese de Madracis decactis Lyman, 1859. Um total de 1800 pólipos foram examinados através de técnicas histológicas padrão. M. decactis é uma espécie hermafrodita, cujos gametas masculinos e femininos se desenvolvem em mesentérios diferentes. A ovogênese iniciou em outubro, e a espermatogênese no final de fevereiro, ambas alcançando maturidade no final do mês de abril. O pico da atividade reprodutiva ocorreu entre fevereiro e abril quando todos os pólipos estavam férteis contendo, principalmente, ovócitos no estágio III de maturação. O exame dos pólipos férteis indicou a presença simultânea dos estágios de desenvolvimento I, II e III para a ovogênese e dos estágios I, II, III e IV para a espermatogênese. Não foram encontrados embriões ou plânulas nos cortes histológicos. Os dados indicam que a liberação dos gametas ou plânulas deve ocorrer, provavelmente, entre os meses de abril e maio.CNPqCAPES - PROA

On the Puzzle of Long and Short Gamma-Ray Bursts

In this paper we give a brief review of our recent studies on the long and short gamma-ray bursts (GRBs) detected Swift, in an effort to understand the puzzle of classifying GRBs. We consider that it is still an appealing conjecture that both long and short GRBs are drawn from the same parent sample by observational biases.Comment: 3 pages, 1 figur