Dimensional stability of an addition silicone after disinfection/sterilization

Poster presented at the “From Basic Sciences to Clinical Research” – First International Congress of CiiEM. Egas Moniz, Caparica, Portugal, 27-28 November 2015"Dental impressions play a key role in clinical practice, and it is crucial to know the impact of disinfection or sterilization on it. The success of oral rehabilitation depends on the accuracy and reproducibility of the oral impressions [1,2,3]. The addition silicones and polyethers tend to be used most frequently for its physical and mechanical properties, such as dimensional stability [1,4,5].

Bonding of fiber posts with different cements

Poster presented at the “From Basic Sciences to Clinical Research” - First International Congress of CiiEM. Caparica, Portugal, 27-28 November 2015"Since their development in 1989 the use of fiber posts on endodontically treated teeth has become common on dentistry and it is supported by clinical evidence. There has been many developments by the different manufactures improving the reliability and durability of the cements used with the fiber posts.Objectives: Measure the bond strength of cement with the push-out test in different root thirds (cervical, middle and apical) at 24h and at 6 months with and without restoration and with different cements.

Photometric type Ia supernova surveys in narrow band filters

We study the characteristics of a narrow band type Ia supernova survey through simulations based on the upcoming Javalambre Physics of the accelerating universe Astrophysical Survey (J-PAS). This unique survey has the capabilities of obtaining distances, redshifts, and the SN type from a single experiment thereby circumventing the challenges faced by the resource-intensive spectroscopic follow-up observations. We analyse the flux measurements signal-to-noise ratio and bias, the supernova typing performance, the ability to recover light curve parameters given by the SALT2 model, the photometric redshift precision from type Ia supernova light curves and the effects of systematic errors on the data. We show that such a survey is not only feasible but may yield large type Ia supernova samples (up to 250 supernovae at $z<0.5$ per month of search) with low core collapse contamination ($\sim 1.5$ per cent), good precision on the SALT2 parameters (average $\sigma_{m_B}=0.063$, $\sigma_{x_1}=0.47$ and $\sigma_c=0.040$) and on the distance modulus (average $\sigma_{\mu}=0.16$, assuming an intrinsic scatter $\sigma_{\mathrm{int}}=0.14$), with identified systematic uncertainties $\sigma_{\mathrm{sys}}\lesssim 0.10 \sigma_{\mathrm{stat}}$. Moreover, the filters are narrow enough to detect most spectral features and obtain excellent photometric redshift precision of $\sigma_z=0.005$, apart from $\sim$ 2 per cent of outliers. We also present a few strategies for optimising the survey's outcome. Together with the detailed host galaxy information, narrow band surveys can be very valuable for the study of supernova rates, spectral feature relations, intrinsic colour variations and correlations between supernova and host galaxy properties, all of which are important information for supernova cosmological applications.Comment: 20 pages, 12 tables and 26 figures. Version accepted by MNRAS, with results slightly different from previous on

Dark Interactions and Cosmological Fine-Tuning

Cosmological models involving an interaction between dark matter and dark energy have been proposed in order to solve the so-called coincidence problem. Different forms of coupling have been studied, but there have been claims that observational data seem to narrow (some of) them down to something annoyingly close to the $\Lambda$CDM model, thus greatly reducing their ability to deal with the problem in the first place. The smallness problem of the initial energy density of dark energy has also been a target of cosmological models in recent years. Making use of a moderately general coupling scheme, this paper aims to unite these different approaches and shed some light as to whether this class of models has any true perspective in suppressing the aforementioned issues that plague our current understanding of the universe, in a quantitative and unambiguous way.Comment: 13 pages, 9 figures, accepted for publication in JCAP. Minor corrections, one figure replaced, references adde

Phytosociological evaluation of weeds in onion field under no-tillage system without the use of agrochemicals

Realizou-se levantamento fitossociológico de plantas invasoras em áreas de cebola sob sistema de plantio direto agroecológico com plantas de cobertura de inverno e verão. Estudos foram realizados em 2009 e 2010 a partir de um experimento de campo em Ituporanga, Brasil. Em 2009 os tratamentos foram: testemunha (pousio); aveiapreta; centeio; nabo-forrageiro; nabo-forrageiro + aveia-preta; nabo-forrageiro + centeio. Em 2010 os tratamentos foram: testemunha; mucuna-preta no verão e cevada no inverno; girassol seguido por centeio no inverno; milheto seguido por nabo-forrageiro; mucuna-preta + milheto seguidos por nabo-forrageiro + centeio no inverno; mucunapreta + girassol seguidos por nabo-forrageiro + cevada. Foi avaliada a produção e matéria seca de plantas invasoras e riqueza de espécies nos dois anos, e índice de dominância e diversidade H’ (Shannon-Wiener) no segundo ano. O uso de diferentes plantas de cobertura de verão e inverno em sistema de plantio direto é uma estratégia para a pressão de seleção sobre as espécies invasoras no manejo agroecológico. Os resíduos das espécies mucuna-preta, milheto, nabo-forrageiro e centeio quando consorciadas apresentaram maior capacidade de supressão da emergência de plantas invasoras quando comparado com as espécies cultivadas solteiras. A testemunha apresentou maiores produções de matéria seca de invasoras, riqueza e índice de diversidade de espécies. Amaranthus lividus L. foi a espécie vegetal dominante em todos os tratamentos com resíduos de plantas de cobertura e na testemunha com vegetação invasora no ciclo da cebola.A phytosociological survey was carried out in Southern Brazil, in an area with onions in a no-tillage experiment, using cover crops for weed management. Studies were carried from an experiment carried out in 2009 and 2010 in Ituporanga, Southern Brazil. In the first year treatments were: control (weeds), black oats, rye, oilseed radish, oilseed radish + black oats, or oilseed radish + rye. In the second year treatments were: control (weeds), velvetbean in summer followed by barley in winter, sunflower followed by rye, millet followed by oilseed radish, velvetbean+ millet followed by radish + rye, and velvet-bean + sunflower followed by radish + barley in winter. Weed occurrence and shoot dry matter were monitored and used to calculate plant richness, dominance index, and Shannon-Wiener H’ diversity index. The use of summer and winter cover crops under no-tillage system is a strategy for selection pressure on invasive species in agroecological management.The residues of the species velvet-bean, millet, barley and rye when consorted with greater capacity of suppression of the emergence of weeds when compared with the cultivated single species. The control acts to increase the production of dry matter of weeds, richness and diversity index of species. Amaranthus lividus L. was a dominant plant species in all trials with cover crops and in surveillance with weeds in the onion cycle.Facultad de Ciencias Agrarias y Forestale

Phytosociological evaluation of weeds in onion field under no-tillage system without the use of agrochemicals

Realizou-se levantamento fitossociológico de plantas invasoras em áreas de cebola sob sistema de plantio direto agroecológico com plantas de cobertura de inverno e verão. Estudos foram realizados em 2009 e 2010 a partir de um experimento de campo em Ituporanga, Brasil. Em 2009 os tratamentos foram: testemunha (pousio); aveiapreta; centeio; nabo-forrageiro; nabo-forrageiro + aveia-preta; nabo-forrageiro + centeio. Em 2010 os tratamentos foram: testemunha; mucuna-preta no verão e cevada no inverno; girassol seguido por centeio no inverno; milheto seguido por nabo-forrageiro; mucuna-preta + milheto seguidos por nabo-forrageiro + centeio no inverno; mucunapreta + girassol seguidos por nabo-forrageiro + cevada. Foi avaliada a produção e matéria seca de plantas invasoras e riqueza de espécies nos dois anos, e índice de dominância e diversidade H’ (Shannon-Wiener) no segundo ano. O uso de diferentes plantas de cobertura de verão e inverno em sistema de plantio direto é uma estratégia para a pressão de seleção sobre as espécies invasoras no manejo agroecológico. Os resíduos das espécies mucuna-preta, milheto, nabo-forrageiro e centeio quando consorciadas apresentaram maior capacidade de supressão da emergência de plantas invasoras quando comparado com as espécies cultivadas solteiras. A testemunha apresentou maiores produções de matéria seca de invasoras, riqueza e índice de diversidade de espécies. Amaranthus lividus L. foi a espécie vegetal dominante em todos os tratamentos com resíduos de plantas de cobertura e na testemunha com vegetação invasora no ciclo da cebola.A phytosociological survey was carried out in Southern Brazil, in an area with onions in a no-tillage experiment, using cover crops for weed management. Studies were carried from an experiment carried out in 2009 and 2010 in Ituporanga, Southern Brazil. In the first year treatments were: control (weeds), black oats, rye, oilseed radish, oilseed radish + black oats, or oilseed radish + rye. In the second year treatments were: control (weeds), velvetbean in summer followed by barley in winter, sunflower followed by rye, millet followed by oilseed radish, velvetbean+ millet followed by radish + rye, and velvet-bean + sunflower followed by radish + barley in winter. Weed occurrence and shoot dry matter were monitored and used to calculate plant richness, dominance index, and Shannon-Wiener H’ diversity index. The use of summer and winter cover crops under no-tillage system is a strategy for selection pressure on invasive species in agroecological management.The residues of the species velvet-bean, millet, barley and rye when consorted with greater capacity of suppression of the emergence of weeds when compared with the cultivated single species. The control acts to increase the production of dry matter of weeds, richness and diversity index of species. Amaranthus lividus L. was a dominant plant species in all trials with cover crops and in surveillance with weeds in the onion cycle.Facultad de Ciencias Agrarias y Forestale

Atlantic mammal traits: a dataset of morphological traits of mammals in the atlantic forest of south America

Measures of traits are the basis of functional biological diversity. Numerous works consider mean species-level measures of traits while ignoring individual variance within species. However, there is a large amount of variation within species and it is increasingly apparent that it is important to consider trait variation not only between species, but also within species. Mammals are an interesting group for investigating trait-based approaches because they play diverse and important ecological functions (e.g., pollination, seed dispersal, predation, grazing) that are correlated with functional traits. Here we compile a data set comprising morphological and life history information of 279 mammal species from 39,850 individuals of 388 populations ranging from −5.83 to −29.75 decimal degrees of latitude and −34.82 to −56.73 decimal degrees of longitude in the Atlantic forest of South America. We present trait information from 16,840 individuals of 181 species of non-volant mammals (Rodentia, Didelphimorphia, Carnivora, Primates, Cingulata, Artiodactyla, Pilosa, Lagomorpha, Perissodactyla) and from 23,010 individuals of 98 species of volant mammals (Chiroptera). The traits reported include body mass, age, sex, reproductive stage, as well as the geographic coordinates of sampling for all taxa. Moreover, we gathered information on forearm length for bats and body length and tail length for rodents and marsupials. No copyright restrictions are associated with the use of this data set. Please cite this data paper when the data are used in publications. We also request that researchers and teachers inform us of how they are using the data.Fil: Gonçalves, Fernando. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Bovendorp, Ricardo S.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Beca, Gabrielle. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Bello, Carolina. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Costa Pereira, Raul. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Muylaert, Renata L.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Rodarte, Raisa R.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Villar, Nacho. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Souza, Rafael. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Graipel, Maurício E.. Universidade Federal de Santa Catarina; BrasilFil: Cherem, Jorge J.. Caipora Cooperativa, Florianopolis; BrasilFil: Faria, Deborah. Universidade Estadual de Santa Cruz; BrasilFil: Baumgarten, Julio. Universidade Estadual de Santa Cruz; BrasilFil: Alvarez, Martín R.. Universidade Estadual de Santa Cruz; BrasilFil: Vieira, Emerson M.. Universidade do Brasília; BrasilFil: Cáceres, Nilton. Universidade Federal de Santa María. Santa María; BrasilFil: Pardini, Renata. Universidade de Sao Paulo; BrasilFil: Leite, Yuri L. R.. Universidade Federal do Espírito Santo; BrasilFil: Costa, Leonora Pires. Universidade Federal do Espírito Santo; BrasilFil: Mello, Marco Aurelio Ribeiro. Universidade Federal de Minas Gerais; BrasilFil: Fischer, Erich. Universidade Federal do Mato Grosso do Sul; BrasilFil: Passos, Fernando C.. Universidade Federal do Paraná; BrasilFil: Varzinczak, Luiz H.. Universidade Federal do Paraná; BrasilFil: Prevedello, Jayme A.. Universidade do Estado de Rio do Janeiro; BrasilFil: Cruz-Neto, Ariovaldo P.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Carvalho, Fernando. Universidade do Extremo Sul Catarinense; BrasilFil: Reis Percequillo, Alexandre. Universidade de Sao Paulo; BrasilFil: Paviolo, Agustin Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; ArgentinaFil: Duarte, José M. B.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil. Fundación Oswaldo Cruz; BrasilFil: Bernard, Enrico. Universidade Federal de Pernambuco; BrasilFil: Agostini, Ilaria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; ArgentinaFil: Lamattina, Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Ministerio de Salud de la Nación; ArgentinaFil: Vanderhoeven, Ezequiel Andres. Ministerio de Salud de la Nación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentin

Desempenho preliminar de novos genótipos de aveia e trigo na Depressão Ccentral do RS

More than two hundred oat and wheat advanced-lines selected in 1983 were grown in field experiments at Guaíba, RS, Brazil, in 1984. The objective was to quantify, grain yield, 100 grain weight, hectoliter weight, biological yield, heading time, and plant stature. The results were significant for all traits, indicating that selection was efficient in oats; on the other hand, only one wheat-line showed superiority to the best check-variety.Mais de 200 linhagens avançadas de aveia (Avena sativa L.) e trigo (Triticum aestivum L.), selecionadas em 1983, foram avaliadas em dois experimentos, conduzidos em Guaíba, RS, durante o ano de 1984. O objetivo foi testar rendimento de grãos, peso do hectolitro e de 100 grãos, rendimento biológico, ciclo de desenvolvimento e estatura de planta. Os resultados foram significativos para todas as variáveis, indicando que a seleção tem sido eficiente na aveia; por outro lado, em trigo, somente uma linhagem mostrou superioridade em rendimento de grãos sobre a melhor cultivar-padrão