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Search Results: 1 - 10 of 375366 matches for " Rita de Cássia Felix;Nascente "
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Produtividade e qualidade industrial do arroz de terras altas em fun??o da disponibilidade hídrica e aduba??o
Artigiani, Angela Cristina Camarim Alvarez;Crusciol, Carlos Alexandre Costa;Arf, Orivaldo;Alvarez, Rita de Cássia Felix;Nascente, Adriano Stephan;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000300011
Abstract: the combination of nitrogen and silicon fertilization, in adequate amounts, can increase rice grains yield and quality. this study aimed at evaluating the yield components, grain yield and milled quality of rice grains, primavera cultivar, according to the application of silicon combined with topdressing nitrogen fertilization, with and without irrigation, in selvíria, mato grosso do sul state, brazil. the experimental design was randomized blocks, in a split-split-plot arrangement, with four replications. the treatments consisted of cropping systems (rainfed and sprinkler irrigation) for plots, silicon doses (0 kg ha-1 and 100 kg ha-1) for split-plots and topdressing nitrogen doses (0 kg ha-1, 30 kg ha-1, 60 kg ha-1 and 90 kg ha-1) for split-split-plots. irrigation increased plant height and grain yield, and the silicon application did not affect grain yield and its components or the milled rice yield of irrigated rice. the rise of n doses, under sprinkler irrigation, increased plant height, number of tillers and panicles m-2 and total spikelets, as well as grain yield, however, for the rainfed system, rice yield decreased.
Determina o de manganês em material particulado atmosférico de ambientes de trabalho utilizando eletrodo de diamante dopado com boro e voltametria de onda quadrada com redissolu o catódica
Felix Fabiana da Silva,Barros Rita de Cássia Mendes de,Lichtig Jaim,Masini Jorge C.
Química Nova , 2005,
Abstract: A boron-doped diamond electrode is used for determination of Mn(II) in atmospheric particulate matter by square wave cathodic stripping voltammetry. The analytical curve was linear for Mn(II) concentrations between 5.0 and 37.5 μg L-1, with quantification limit of 3.6 μg L-1. The precision was evaluated by the relative standard deviation, with values between 5.1% and 9.3%. The electrode is free of adsorption, minimizing memory effects. Samples collected in the workplace atmosphere of a foundry had Mn(II) concentrations between 0.4 and 4 μg m-3. No significant differences were observed between the proposed method and inductively coupled plasma optical emission spectroscopy.
Determina??o de manganês em material particulado atmosférico de ambientes de trabalho utilizando eletrodo de diamante dopado com boro e voltametria de onda quadrada com redissolu??o catódica
Felix, Fabiana da Silva;Barros, Rita de Cássia Mendes de;Lichtig, Jaim;Masini, Jorge C.;Ferreira, Neidenêi Gomes;
Química Nova , 2005, DOI: 10.1590/S0100-40422005000600013
Abstract: a boron-doped diamond electrode is used for determination of mn(ii) in atmospheric particulate matter by square wave cathodic stripping voltammetry. the analytical curve was linear for mn(ii) concentrations between 5.0 and 37.5 μg l-1, with quantification limit of 3.6 μg l-1. the precision was evaluated by the relative standard deviation, with values between 5.1% and 9.3%. the electrode is free of adsorption, minimizing memory effects. samples collected in the workplace atmosphere of a foundry had mn(ii) concentrations between 0.4 and 4 μg m-3. no significant differences were observed between the proposed method and inductively coupled plasma optical emission spectroscopy.
Uso do regulador de crescimento etil-trinexapac em arroz de terras altas
Nascimento, Vagner Do;Arf, Orivaldo;Silva, Matheus Gustavo Da;Binotti, Flávio Ferreira Da Silva;Rodrigues, Ricardo Ant?nio Ferreira;Alvarez, Rita De Cássia Felix;
Bragantia , 2009, DOI: 10.1590/S0006-87052009000400012
Abstract: this work was developed with the objective of evaluating the use of trinexapac-ethyl doses (0, 75, 150, 225 and 300 g of the a.i. ha-1) and application times (active tillering, between active tillering and floral differentiation and at floral differentiation) in upland rice crop development and yield. the experiment was carried out in selvíria-ms, during the agricultural year of 2006/07. application of 150 g ha-1 of trinexapac-ethyl in primavera rice cultivar at panicle initiation differentiation reduces plants height, 0.40 m on average comparing to other times, with lodging absence. trinexapac-ethyl promotes lange number of abnormal grains, reduction of grain yields in doses above 150 g ha-1, when applied in panicle initiation differentiation stadium. application of 150 g ha-1 of trinexapac-ethyl at any time does not interfere in crop yield.
Análise de crescimento e produtividade de cultivares de arroz de terras altas dos tipos tradicional, intermediário e moderno
Alvarez, Rita de Cassia Felix;Crusciol, Carlos Alexandre Costa;Nascente, Adriano Stephan;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000400008
Abstract: the growth analysis allows the characterization and understanding of the upland rice cultivars development. this study aimed at characterizing, by using the growth analysis, the physiological components and agronomic performance, as well as the differences among traditional, intermediate and modern upland rice cultivars. the experiment was conducted under upland rice conditions, favored by the use of supplementary irrigation. the experimental design was randomized blocks, with three treatments consisting of traditional (caiapó), modern (maravilha) and intermediate (brs primavera) cultivars and eight replications. the leaf area index (lai), instantaneous growth rate (igr), relative growth rate (rgr), net assimilation rate (nar) and specific leaf area (sla), as well as grain yield and yield components, were evaluated. the intermediate and traditional cultivars presented the highest total dry matter accumulation rate, while the traditional and modern ones showed the highest lai. the intermediate cultivar presented the highest igr, rgr, nar and sla levels, as well as the highest grain yield, as a consequence of the higher spikelet fertility and 1,000 grain mass.
Prevalência de sintomáticos respiratórios em regi?es do Distrito Federal, Brasil
Freitas,Felipe Teixeira de Mello; Yokota,Renata Tiene de Carvalho; Castro,André Peres Barbosa de; Andrade,Silvania Suely Caribé de Araújo; Nascimento,Gilmara Lima; Moura,Noely Fabiana Oliveira de; Cabral,Amanda Priscila de Santana; Igansi,Cristine Nascente; Tauil,Márcia de Cantuária; Ferreira,Patrícia Marques; Ramos,Carina Guedes; Costa,Carolina Monteiro da; Skalinski,Lacita Menezes; Medeiros,Marcelo Augusto Nunes; Marques,Daniel; Moreno,Eduardo Stramandinoli; Figueira,Gerrita de Cássia Nogueira; Fred,Jo?o; Favacho,Joana da Felicidade Ribeiro; Costa,Rita de Cássia Farah; Macário,Eduardo Marques; Nóbrega,Aglaêr Alves da;
Revista Panamericana de Salud Pública , 2011, DOI: 10.1590/S1020-49892011000600011
Abstract: the identification of individuals with respiratory symptoms (rs) is important for the early detection of tuberculosis. the aim of this study was to estimate the prevalence of rs in three administrative regions of the federal district, brazil. for this, we used the 30 by 7 cluster sampling technique proposed by the world health organization. individuals with rs were defined as those aged 15 years or older living in the administrative regions of estrutural, itapo?, or varj?o and reporting a cough lasting at least 3 weeks at the date of the interview. the prevalence of rs was 5.7% in estrutural and varj?o (95% ci: 2.4-9.0) and 4.8% in itapo? (95%ci: 1.6-7.9), with a design effect close to 1.0. in estrutural and itapo?, fewer years of schooling, and in itapo? and varj?o, lower income, were associated with rs. cigarette smoking was associated with the presence of rs in all regions. the prevalence of rs in the three administrative regions investigated is consistent with that of other areas with a similar socioeconomic profile.
A Caridade criando hospitais em Minas Gerais (Brasil) - séculos XVIII-XX
Cássia Marques,Rita de;
Dynamis , 2011, DOI: 10.4321/S0211-95362011000100006
Abstract: o artigo é fruto de uma pesquisa sobre o patrim?nio cultural da saúde em minas gerais (brasil) e se dedica a compreender a constru??o de hospitais fomentados pelas a??es caritativas de católicos, leigos ou religiosos, entre os séculos xviii e xx. o movimento católico leigo sempre foi forte em minas gerais favorecido pelas proibi??es da coroa portuguesa em torno da livre circula??o de religiosos, considerados suspeitos de contrabandear o ouro das minas. a primeira santa casa, a de vila rica, surge de uma irmandade. a caridade também é o mote de outro grupo de leigos que teve grande importancia no brasil, especialmente no século xx - os vicentinos. assinala-se ainda a divulga??o dos ideais de caridade de frederico ozanam com base na obra de s?o vicente de paula. por vicentinos é preciso entender tanto o movimento leigo abrigado nas conferências da sociedade s?o vicente de paula, como os religiosos: os padres lazaristas e as irm?s vicentinas. o terceiro grupo estudado é o dos médicos católicos, fruto do associativismo profissional incentivado pela igreja católica. as santas casas com suas irmandades, os vicentinos e o associativismo católico integram movimentos reconhecidos no mundo todo. nesse contexto social de grande participa??o católica nas obras de caridade, restava aos médicos integrar o movimento, com o desprendimento dos atendimentos muitas vezes gratuitos e com o esfor?o para criar hospitais para a popula??o carente. no século xx, a capital de minas gerais, embora fruto de decis?o de republicanos e positivistas portadores dos ideários da modernidade, continuou se valendo da caridade crist? para tratar dos pobres.
Gênero, infancia e rela??es de poder: interroga??es epistemológicas
Marchi, Rita de Cássia;
Cadernos Pagu , 2011, DOI: 10.1590/S0104-83332011000200016
Abstract: this article relates the peripheral positions of woman and child in the scientific field and the current epistemological difficulties towards the emancipation of childhood as a conceptually autonomous sociological category. these difficulties are similar to the resistance encountered some years ago by "feminist studies" to establish gender as a new category of analysis. childhood is a phenomenon permeated, in the social field, by asymmetric relations of power and action between generations and, in the scientific field, by the adult-focused and predominantly masculine (androcentric) perspective of knowledge.
Plant reproductive phenology and dispersal patterns after natural regeneration in a limestone mining spoil banks
Frenedozo, Rita de Cássia;
Brazilian Archives of Biology and Technology , 2004, DOI: 10.1590/S1516-89132004000200014
Abstract: studies were carried out on the phenological patterns and dispersion of a plant community developed naturally after limestone mining operations, in accumulated materials of wastes (spoil banks). the objectives were to focus the seasonality of plant reproductive in a degraded environment; to analyze the community according to dispersal syndrome and to know about plant resources for the animals monthly observations of flowering and fruiting patterns of the community were done, comparing the herbaceous, shrubs and woody species. proportion of anemochorous and autochorous was higher in the herbaceous and shrubby strata. the zoochorous ones, on the contrary, were more frequent in the woody stratum. this study showed that natural introduction of the animals at the unreclaimed area, increased the chances for long time, of preserving the plant species since they are pollinated and dispersed their seeds.
O ?ofício de aluno? e o ?ofício de crian?a?: articula??es entre a sociologia da educa??o e a sociologia da infancia
Marchi,Rita de Cássia;
Revista Portuguesa de Educa??o , 2010,
Abstract: this article establishes the relationships between what is known as the "paradigm crisis" in the sociology of education (sed) in the 90?s and the appearance of a new paradigm for the social studies of childhood. as the central elements of this new paradigm we have the principles of childhood social construction and of child-actor and the requirement of the conceptual autonomy of childhood. the initial separation between the sociology of education and the social studies of childwood was due to the fact the sed has been traditionally focused, both on its structural-functional side and on the reproduction theories space as well, on the macro-relationships between school and society. the "child task" and the "student task" have here a complex existence whose clarification reveals the paths which have been exploited in the theoretical-methodological constructions inside these disciplines and in their tense articulations.
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