Caracterização físico-mecânica de painéis aglomerados de Eucalyptus grandis com adição de resíduos industriais madeireiros

Pós-graduação em Ciência Florestal - FCA

Estudo e análise do coeficiente de absorção acústico do compósito da fibra de cana

Pós-graduação em Engenharia Mecânica - FEIS

Resistências e transformações da organização agrária e histórico-cultural do bairro do Sobrado, Rio Claro/SP

O município de Rio Claro, localizado na região central do estado de São Paulo, durante o auge da era do café, da imigração tanto estrangeira como regional e da instalação de várias empresas, dentre elas a Companhia Paulista de Estradas de Ferro se urbanizou num acelerado ritmo, assim como tantas outras cidades do Brasil. Como resultado o aglomerado urbano cresceu, necessitando que seu perímetro expandisse para a zona rural, comprometendo tanto o seu patrimônio histórico quanto o cultural. Antigas propriedades datadas do final do século XIX que resistem à ação do tempo e mantém viva a riqueza e a cultura da época dão lugar à cidade. Esse processo é observado no bairro rural do Sobrado, localizado na região norte de Rio Claro, que vem sofrendo diretamente com a expansão urbana através da criação de novos loteamentos residenciais e comerciais. Portanto, o avanço da urbanização tem provocado à degradação e/ou desaparecimento dos fatos históricos e culturais ainda presentes nos bairros rurais do município

Técnicas de análise de dados distribuídos em áreas

Pós-graduação em Biometria - IBB

Processo de medição de desempenho em micro e pequenas empresas de um arranjo produtivo local

The local productive arrangements (LPA) are organizational mechanisms that enable the continuous performance of small businesses in production processes and business management models. To promote continuous improvement is essential that companies make decisions based on data that reflects business’ performance (performance measurement) and promote the cluster performance. This way, the aim of this article is to describe the performance measurement process that will support the corporate management of Micro and Small enterprises (SME) of a Local Productive Arrangement in Maringá, State of Paraná, Brazil. To develop this paper, the bibliographic search and action research methods were used. The field research was developed from the cooperation project (PROJVEST) conducted at the LPA, which goal is to deploy improvement actions in project’s participating companies. Metrics and performance indicators constructed from the diagnosis in the areas of Production, Quality and Ergonomics in companies will be presented. Among the main results, can be pointed out that the performance management of LPA is promoting the introduction of corporate management practices in SMEs, stimulating business cooperation, the continuous innovation in manufacturing processes and product quality and business processes.

Estudo da relação de ordem-desordem estrutural em nanopartículas de TiO2

Pós-graduação em Química - IQ

Energia escura e formação de estruturas em larga escala

Pós-graduação em Física - IFT

Gestão, território e desenvolvimento: dificuldades e perspectivas do município de Tabatinga - SP

Pós-graduação em Geografia - IGCE

The nature of extremely red galaxies in the local universe

We investigate the nature of extremely red galaxies (ERGs), objects whose colours are redder than those found in the red sequence present in colour–magnitude diagrams of galaxies. We selected from the Sloan Digital Sky Survey Data Release 7 a volume-limited sample of such galaxies in the redshift interval 0.010 < z < 0.030, brighter than Mr = −17.8 (magnitudes dereddened, corrected for the Milky Way extinction) and with (g − r) colours larger than those of galaxies in the red sequence. This sample contains 416 ERGs, which were classified visually. Our classification was cross-checked with other classifications available in the literature. We found from our visual classification that the majority of objects in our sample are edge-on spirals (73 per cent). Other spirals correspond to 13 per cent, whereas elliptical galaxies comprise only 11 per cent of the objects. After comparing the morphological mix and the distributions of Hα/Hβ and axial ratios of ERGs and objects in the red sequence, we suggest that dust, more than stellar population effects, is the driver of the red colours found in these extremely red galaxies.

Testing phenomenological and theoretical models of dark matter density profiles with galaxy clusters

We use the stacked gravitational lensingmass profile of four high-mass (M 1015M ) galaxy clusters around z≈0.3 from Umetsu et al. to fit density profiles of phenomenological [Navarro– Frenk–White (NFW), Einasto, S´ersic, Stadel, Baltz–Marshall–Oguri (BMO) and Hernquist] and theoretical (non-singular Isothermal Sphere, DARKexp and Kang & He) models of the dark matter distribution. We account for large-scale structure effects, including a two-halo term in the analysis.We find that the BMO model provides the best fit to the data as measured by the reduced χ2. It is followed by the Stadel profile, the generalized NFW profile with a free inner slope and by the Einasto profile. The NFW model provides the best fit if we neglect the two-halo term, in agreement with results from Umetsu et al. Among the theoretical profiles, the DARKexp model with a single form parameter has the best performance, very close to that of the BMO profile. This may indicate a connection between this theoretical model and the phenomenology of dark matter haloes, shedding light on the dynamical basis of empirical profiles which emerge from numerical simulations.

Galaxy triplets in Sloan Digital Sky Survey Data Release 7: II. A connection with compact groups?

We analyse a sample of 71 triplets of luminous galaxies derived from the work of O’Mill et al. We compare the properties of triplets and their members with those of control samples of compact groups, the 10 brightest members of rich clusters and galaxies in pairs. The triplets are restricted to have members with spectroscopic redshifts in the range 0.01 ≤ z ≤ 0.14 and absolute r-band luminosities brighter than Mr = −20.5. For these member galaxies, we analyse the stellar mass content, the star formation rates, the Dn(4000) parameter and (Mg − Mr) colour index. Since galaxies in triplets may finally merge in a single system, we analyse different global properties of these systems. We calculate the probability that the properties of galaxies in triplets are strongly correlated. We also study total star formation activity and global colours, and define the triplet compactness as a measure of the percentage of the system total area that is filled by the light of member galaxies. We concentrate in the comparison of our results with those of compact groups to assess how the triplets are a natural extension of these compact systems. Our analysis suggests that triplet galaxy members behave similarly to compact group members and galaxies in rich clusters. We also find that systems comprising three blue, star-forming, young stellar population galaxies (blue triplets) are most probably real systems and not a chance configuration of interloping galaxies. The same holds for triplets composed of three red, non-star-forming galaxies, showing the correlation of galaxy properties in these systems. From the analysis of the triplet as a whole, we conclude that, at a given total stellar mass content, triplets show a total star formation activity and global colours similar to compact groups. However, blue triplets show a high total star formation activity with a lower stellar mass content. From an analysis of the compactness parameter of the systems we find that light is even more concentrated in triplets than in compact groups. We propose that triplets composed of three luminous galaxies, should not be considered as an analogous of galaxy pairs with a third extra member, but rather they are a natural extension of compact groups.

Origin of the heavy elements in HD 140283: measurement of europium abundance

Context. HD140283 is a nearby (V = 7:7) subgiant metal-poor star, extensively analysed in the literature. Although many spectra have been obtained for this star, none showed a signal-to-noise (S/N) ratio high enough to enable a very accurate derivation of abundances from weak lines. Aims. The detection of europium proves that the neutron-capture elements in this star originate in the r-process, and not in the s-process, as recently claimed in the literature. Methods. Based on the OSMARCS 1D LTE atmospheric model and with a consistent approach based on the spectrum synthesis code Turbospectrum, we measured the europium lines at 4129 Å and 4205 Å, taking into account the hyperfine structure of the transitions. The spectrum, obtained with a long exposure time of seven hours at the Canada-France-Hawaii Telescope (CFHT), has a resolving power of 81 000 and a S/N ratio of 800 at 4100 Å. Results. We were able to determine the abundance A(Eu) =

Extended spherical collapse and the accelerating universe

The influence of the shear stress and angular momentum on the nonlinear spherical collapse model is discussed in the framework of the Einstein–de Sitter and ΛCDM models. By assuming that the vacuum component is not clustering within the homogeneous nonspherical overdensities, we show how the local rotation and shear affect the linear density threshold for collapse of the nonrelativistic component (δc) and its virial overdensity (ΔV ). It is also found that the net effect of shear and rotation in galactic scale is responsible for higher values of the linear overdensity parameter as compared with the standard spherical collapse model (no shear and rotation)

Impactos en el agua subterránea de un sistema de efluentes para riego : el Sistema Paramillos (Lavalle, Mendoza, Argentina)

En este trabajo se evalúa el impacto de un sistema de aprovechamiento de efluentes domésticos para riego en la calidad del agua subterránea. Los puntos de muestreo seleccionados son parte de un monitoreo a mayor escala del cual sólo se incluyeron aquellos relacionados con el sistema de la planta depuradora Paramillos, ubicada al Norte del aglomerado Mendoza. Esta planta consiste en una laguna de estabilización facultativa. Los resultados, presentados en gráficos, mapas y tablas, se discuten a partir del comportamiento de tres componentes del sistema hídrico: agua superficial (efluente), agua subterránea del nivel superior del acuífero (freática) y agua subterránea del acuífero profundo (confinado/ semiconfinado) y su interacción con el perfil del suelo. Se concluye que el acuífero profundo no es alcanzado por nitratos ni nitritos productos de la degradación biológica de la materia orgánica del efluente, lo que se atribuye a la capa impermeable subyacente. En el nivel superior o freático, el perfil del suelo remueve parte del N total y P total ingresado, entre el 39 y 90%. La remoción de DBO varía entre 30 y 90% y la remoción de E. coli remanente en efluente es total.

La expansión urbana y procesos sociales en Yerba Buena (Gran San Miguel de Tucumán, Tucumán) : countries y barrios privados

En Argentina el auge de las urbanizaciones cerradas se produjo a fines de los ochenta y principios de los noventa y ocurrió en las principales ciudades del país: Buenos Aires (Janoschka 2003; Svampa 2003), Rosario (Bragos et al 2003), Mendoza (Roitman 2003) y Tucumán (Malizia y Paolasso 2007). El fenómeno de las urbanizaciones cerradas también se reproduce, en menor escala, en ciudades intermedias como el Gran San Miguel de Tucumán -GSMT- (Mertins 1995). Este trabajo hace análisis de la distribución espacial de las urbanizaciones cerradas, cambios que se producen en la estructura urbana y procesos sociales resultantes de la interacción entre “los de adentro" y “los de afuera". El mismo se focaliza en el municipio de Yerba Buena, ubicado al oeste del GSMT, dado que concentra la mayor cantidad de urbanizaciones cerradas del aglomerado; en el 2005 ya se habían construido 45 emprendimientos de este tipo. En la actualidad en esta zona se conjugan la vivienda social, la ocupación ilegal de terrenos, los asentamientos precarios y los emprendimientos residenciales destinados a la clase media alta y alta (Müller 2000/01; Mertins 1995). Estos últimos impulsan la conformación de un CBD en rápida expansión y la construcción de centros comerciales, entretenimientos y otros en sus fronteras de avance. Esta expansión produce, a su vez, la fragmentación de la ciudad que se manifiesta en una marcada tendencia hacia una “ciudad de islas", tal como lo expresa Janoschka (2002) en su nuevo modelo de análisis de las metrópolis latinoamericanas.