Galaxy triplets in Sloan Digital Sky Survey Data Release 7-I. Catalogue

We present a new catalogue of galaxy triplets derived from the Sloan Digital Sky Survey (SDSS) Data Release 7. The identification of systems was performed considering galaxies brighter than Mr=-20.5 and imposing constraints over the projected distances, radial velocity differences of neighbouring galaxies and isolation. To improve the identification of triplets, we employed a data pixelization scheme, which allows us to handle large amounts of data as in the SDSS photometric survey. Using spectroscopic and photometric data in the redshift range 0.01 =z= 0.40, we obtain 5901 triplet candidates. We have used a mock catalogue to analyse the completeness and contamination of our methods. The results show a high level of completeness ( 80 per cent) and low contamination ( 5 per cent). By using photometric and spectroscopic data, we have also addressed the effects of fibre collisions in the spectroscopic sample. We have defined an isolation criterion considering the distance of the triplet brightest galaxy to the closest neighbour cluster, to describe a global environment, as well as the galaxies within a fixed aperture, around the triplet brightest galaxy, to measure the local environment. The final catalogue comprises 1092 isolated triplets of galaxies in the redshift range 0.01 =z= 0.40. Our results show that photometric redshifts provide very useful information, allowing us to complete the sample of nearby systems whose detection is affected by fibre collisions, as well as extending the detection of triplets to large distances, where spectroscopic redshifts are not available.

The dynamical state of galaxy groups and their luminosity content

We analyse the dependence of the luminosity function (LF) of galaxies in groups on group dynamical state. We use the Gaussianity of the velocity distribution of galaxy members as a measurement of the dynamical equilibrium of groups identified in the Sloan Digital Sky Survey Data Release 7 by Zandivarez & Martinez. We apply the Anderson-Darling goodness-of-fit test to distinguish between groups according to whether they have Gaussian or non-Gaussian velocity distributions, i.e. whether they are relaxed or not. For these two subsamples, we compute the (0.1)r-band LF as a function of group virial mass and group total luminosity. For massive groups, , we find statistically significant differences between the LF of the two subsamples: the LFs of groups that have Gaussian velocity distributions have a brighter characteristic absolute magnitude (similar to 0.3 mag) and a steeper faint-end slope (similar to 0.25). We detect a similar effect when comparing the LF of bright [M-0.1r(group) - 5log(h) < -23.5] Gaussian and non-Gaussian groups. Our results indicate that, for massive/luminous groups, the dynamical state of the system is directly related to the luminosity of its galaxy members.

Criança dependente de tecnologia: a experiência do cuidado materno

Este estudo tem como objetivo compreender a experiência materna no cuidado ao filho dependente de tecnologia. Utilizamos a abordagem do estudo de caso etnográfico tendo como instrumentos de coleta de dados os genograma e ecomapa, entrevista aberta e observação. Os dados foram organizados em três unidades de significados: a busca pelas causas e por culpados; a alta hospitalar e as demandas para o cuidado e as redes de apoio. O estudo permitiu conhecer a experiência materna em busca por explicações, bem como os sentimentos de desconfiança, insegurança e insatisfação relacionados ao serviço de saúde. Ainda a apropriação da mãe em relação aos cuidados à criança e no que se refere à organização do ambiente domiciliar para recebê-la, a utilização das redes de apoio, destacando a carência de vínculos com familiares e vizinhos e a busca formal e informal para garantir a subsistência da criança doente e dos demais filhos.

WATER VAPOR CONDUCTANCE OF THE LOWER CRETACEOUS DINOSAURIAN EGGS FROM SANAGASTA, LA RIOJA, ARGENTINA: PALEOBIOLOGICAL AND PALEOECOLOGICAL IMPLICATIONS FOR SOUTH AMERICAN FAVEOLOOLITHID AND MEGALOOLITHID EGGS

The water vapor conductance (G(H20)) of the neosauropod eggs from the Lower Cretaceous Sanagasta nesting site in La Rioja Province, Argentina, was examined and compared with other Cretaceous Argentinean oological material. The 2900 mgH(2)O/day.Torr G(H2O) of the Sanagasta eggshells confirms an extremely moist nesting environment and supports field observations of dug-out nests in a geothermal setting. The observed thinning of the outer eggshell surface during incubation increases gas conductance and concomitantly decreases eggshell mechanical resistance during the late ontogenetic stages, thus facilitating embryonic development and hatching. The Sanagasta and Entre Rios Province faveoloolithid eggs display the highest and comparable 61120 values and share several morphological and diagenetic characters, indicating comparable nesting strategy in geothermal settings. However, the faveoloolithid Yamintie and La Pampa Province specimens cluster together with lower G(H20) values closer to the megaloolithid eggs. The Gnu) of the megaloolithid egg Megaloolithus patagonicus was reconsidered and new results are now congruent with other reported megaloolithid GH2O values. Additionally, we hypothesize that V-shaped pore canals of M. patagonicus, which upper sections reach only the top third or half eggshell thickness and, a wider section in the middle would not compromise the overall egg mechanical resistance like vertical pores connecting directly the outer to the inner eggshell surfaces. Such pore spatial arrangement and geometry would enhance, as the eggshell thins during incubation, a greater G(H2O), G(O2) and G(CO2) and facilitate embryonic development in high moisture nesting contents. Overall, data suggests that neosauropod nesting and brooding behaviors were dependent on elevated moisture nesting environments.

Validação de constructo de tecnologia educativa para pacientes mediante aplicação da técnica Delphi

OBJETIVO: Descrever o processo de validação de uma tecnologia educativa para pacientes submetidos à cirurgia ortognática, mediante a aplicação da técnica Delphi. MÉTODOS: Participaram do estudo, dez juízes (quatro cirurgiões bucomaxilofaciais, duas enfermeiras, duas nutricionistas e duas fonoaudiólogas) que indicaram os assuntos a serem abordados no material destinado à primeira fase da técnica Delphi. Após a construção do material e a obtenção dos resultados da primeira fase, iniciou-se as segunda e terceira fases dessa técnica com validação da pertinência das informações contidas nessa tecnologia educativa. RESULTADOS: Na segunda rodada, obteve-se, pelo menos, 90,0% de concordância em todas as categorias. Na terceira, houve um aumento de 12% para o item conteúdo, melhora de 6,7% em linguagem, de 12,5% em ilustrações, de 3,3% no layout, de 10% em cultura, mantendo-se constante o item motivação. CONCLUSÃO: A técnica Delphi, pode ser uma importante ferramenta na construção e validação de tecnologias educativas.