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Search Results: 1 - 10 of 56152 matches for " Silvio Carlos Cazarrotto;Camargo "
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Consumo de água e perdas de nutrientes e de sedimentos na água de drenagem inicial do arroz irrigado
Machado, Sérgio Luiz de Oliveira;Marchezan, Enio;Righes, Afranio Almir;Carlesso, Reimar;Villa, Silvio Carlos Cazarrotto;Camargo, Edinalvo Rabaiolli;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000100010
Abstract: in rio grande do sul, brazil, irrigated rice fields use large amount of water and have the potential of contaminate surface water bodies when drainage is performed. the objective of this experiment was to quantify the amount of water in flooded rice fields under different cropping systems (experiment i) and to measure the concentration of nutrients in the initial drainage water of pre-germinated, pre-germinated mix and seedling transplanting systems (experiment ii). the research was conducted during 2000/01 and 2001/02 (experiment i) and during 1999/00, 2000/01 and 2001/02 (experiment ii) in a lowland area of a planosoil located at the federal university of santa maria-rs, brazil. in the years 2000/01 and 2001/02 (experiment i) five cropping systems (conventional, minimum tillage, pre-germinated, mix of pre-germinated and seedling transplanting) randomized block experimental design with four replications were used. the cropping systems did not influence the use of water by flooded rice, varying from 5,431 to 6,422 and 5,347 to 5,852m3 ha-1 for the years 2000/01 and 2001/02, respectively. the amount of water used for flooding the soil in the pre-germinated and seedling transplanting systems or form stablishing a layer of water in the mix pre-germinated was 1,285m3 ha-1. in experiment ii, three cropping systems (pre-germinated, mix of pre-germinated and seedling transplanting) were compared. nitrate, phosphorus and magnesium concentrations in the initial drainage water were similar in the different cropping systems. in the mix of pre-germinated system, ammonium and potassium concentrations were higher when compared with the pre-germinated and seedling transplanting systems with averages of 3.85 and 7.70mg l-1, respectively. recorded nutrient losses were within the range allowed by the currente legislation. the concentration of sediments in the drainage water was lower in the mix of pre-germinated system when compared to pre-germinated and seedling transplanting system
Paracoccidioidomicose: freqüência, morfologia e patogênese de les?es tegumentares
Marques, Silvio Alencar;Cortez, Daniela Barros;Lastória, Joel Carlos;Camargo, Rosangela M. Pires de;Marques, Mariangela E. Alencar;
Anais Brasileiros de Dermatologia , 2007, DOI: 10.1590/S0365-05962007000500003
Abstract: background: paracoccidioidomycosis is a highly prevalent systemic mycosis in brazil. the oral and cutaneous lesions are useful for diagnostic proposals and clinical follow-up. objective: to quantify and qualify skin lesions associated to active paracoccidioidomycosis and to correlate them with the clinical form and severity of cases. methods: an observational clinical study of cases was performed. patients were classified according to the clinical form, topographic distribution and morphology of skin lesions. results: a total of 152 patients classified as chronic form (adult type) (87.5%) or acute-subacute form (juvenile type) (12.5%) were studied. skin lesion was diagnosed in 61.2% of patients. there was no statistical correlation between presence of skin lesion and clinical form (p=1.000), nor between skin lesion and severity of disease (p=0.5607). there was statistical correlation between mucosal lesion and adult patients (p <0.001). the lesions were on the cephalic segment (47.6%), trunk (14.9%), upper limbs (14.9%), lower limbs (21.7%) and genital region (0.7%). the ulcerated lesions (42.8%) and infiltrative (26.6%) lesions prevailed. conclusion: the frequency of skin lesions and their morphology are useful for diagnosis of paracoccidioidomycosis. oral lesions in the acute-subacute form (juvenile type) are not common.
Produ??o de novilhos de corte com suplementa??o em pastagem de azevém submetida a doses de nitrogênio
Difante, Gelson dos Santos;Marchezan, Enio;Villa, Silvio Carlos Cazarotto;Rocha, Marta Gomes da;Santos, Fernando Machado dos;Camargo, Edinalvo Rabaioli;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000400023
Abstract: the experiment was carried out in a leveled lowland area cultivated with italian ryegrass (lolium multiflorum lam.). the objective was to compare the effect of nitrogen (n) and different energy supplementation levels on the following parameters: herbage quality, herbage yield, and animal production. the treatments were: 300n + 0.8s - italian ryegrass pasture plus 300 kg.ha-1 of n and supplementation with ground corn (0.8% lw/day), 200n + 0.4s - italian ryegrass pasture plus 200 kg.ha-1 of n and supplementation with ground corn (0.4% lw/day) and 100n - italian ryegrass pasture plus 100 kg.ha-1 of n without supplementation. beef steers averaging eight to ten months old were used in the beginning of the experiment and allotted to continuous stocking with fixed stocking rate. crude protein concentration, in vitro organic matter digestibility and forage on offer were greater in the beginning of the grazing period. difference among treatments was observed only for forage on offer. nitrogen levels, associated to different energy supplementation levels, did not affect average daily live weight gain, but resulted in greater stocking rate and, consequently, higher live weight gain/ha.
Ocorrência de anticorpos anti-Brucella abortus e anti-Brucella canis em c?es rurais e urbanos do Município de Monte Negro, Rond?nia, Brasil
Aguiar, Daniel Moura de;Cavalcante, Guacyara Tenório;Vasconcellos, Silvio Arruda;Megid, Jane;Salgado, Vanessa Riesz;Cruz, Tais Fukuta;Labruna, Marcelo Bahia;Pinter, Adriano;Silva, Jean Carlos Ramos da;Moraes, Zenaide Maria;Camargo, Luís Marcelo Aranha;Gennari, Solange Maria;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000500039
Abstract: serum samples from 304 dogs living in urban or rural areas of monte negro county, rond?nia state, brazil, were evaluated for brucella abortus reactivity using the rose-bengal test (rbt), standard tube agglutination test (sat), and mercaptoethanol test (met), and for brucella canis reactivity using the immunodiffusion test (agid) and immunodiffusion test with 2-mercaptoethanol (me-agid). serum was considered positive if reacted in the met or me-agid. fifty-six (18.4%) dogs reacted by the rbt, and 12 (4.0%) by the sat. one (0.3%) dog was positive by the met. eleven (3.6%) dogs reacted by the agid, but with no confirmation by the me-agid. it the small occurrence of dogs reacting by the met and the absence of reactivity by me-agid is emphasized.
Editorial
Silvio Carlos Rodrigues
Revista Sociedade & Natureza , 2009,
Abstract: A Revista Sociedade & Natureza apresenta a partir deste ano de 2009 uma série de novidades em sua linhaeditorial, com amplia o de seus conselhos Editorial e Consultivo, que passam a ter uma maior representatividadenacional e internacional. Estas modifica es fazem parte de um processo de aprimoramento do processo avaliativoe de adequa es a demanda da comunidade científica da área de Geografia e áreas afins.A primeira novidade é a nova periodicidade da revista, que passa a ser quadrimestral, fruto da maior demandapor publica o e também por uma melhor qualifica o dos artigos submetidos. Também passam a ser desenvolvidosdossiês temáticos, buscando incrementar a discuss o em tópicos específicos.Neste número s o tratados em forma de estudos de caso, aspectos relativos a Rela o Sociedade-Natureza emUnidades de Conserva o, sendo que três artigos tratam de aspectos relativos a rela o sociedade-natureza noentorno ou no interior de unidades de conserva o localizadas em distintas regi es brasileiras, mostrando que osdesafios da política ambiental, em um nível mais amplo, possuem suas peculiaridades ao nível local.Os aspectos relacionados a determina o de áreas de risco e da ocorrência de desastres têm sua preocupa olevantada em artigos que tratam de situa es distintas, como as queimadas, inunda es e tempestades, mostrandoa diversidade de aspectos e abordagens conceituais e técnicas a respeito deste temas. Outros aspectos relativos ademanda por água ou o gerenciamento de resíduos sólidos, modifica es no uso da terra em pequenos municípios,impacto da agricultura sobre o meio ambiente e aspectos importantes da evolu o histórica do pensamentogeográfico também s o abordados em artigos específicos.A revista apresenta neste número artigos oriundos de todas as regi es brasileiras, e inclusive um artigo internacionala respeito de processos erosivos em terrenos lateríticos, demonstrando a abrangência de autores e a importanciade se poder atender cada vez mais a produ o nacional de qualidade.O padr o editorial da revista foi reconhecido recentemente com a indexa o no SciELO – Scientific ElectronicLibrary Online – que é uma das bibliotecas eletr nicas de indexa o reconhecidas pelos sistema de avalia o daCAPES e do CNPq, sendo a primeira revista dedicada a Geografia a conseguir este selo de qualidade.Com esta nova conforma o pretende-se uma maior visibilidade e agilidade na publica o dos artigos, bem comouma maior divulga o da produ o geográfica nacional e uma maior intera o com a comunidade geográficanacional.Silvio Carlos RodriguesEditor
A note on the uniqueness of the canonical connection of a naturally reductive space
Carlos Olmos,Silvio Reggiani
Mathematics , 2012,
Abstract: We extend the result in J. Reine Angew. Math. 664, 29-53, to the non-compact case. Namely, we prove that the canonical connection on a simply connected and irreducible naturally reductive space is unique, provided the space is not a sphere, a compact Lie group with a bi-invariant metric or its symmetric dual. In particular, the canonical connection is unique for the hyperbolic space when the dimension is different from three. We also prove that the canonical connection on the sphere is unique for the symmetric presentation. Finally, we compute the full isometry group (connected component) of a compact and locally irreducible naturally reductive space.
The skew-torsion holonomy theorem and naturally reductive spaces
Carlos Olmos,Silvio Reggiani
Mathematics , 2008,
Abstract: We prove a Simons-type holonomy theorem for totally skew 1-forms with values in a Lie algebra of linear isometries. The only transitive case, for this theorem, is the full orthogonal group. We only use geometric methods and we do not use any classification (not even that of transitive isometric actions on the sphere or the list of rank one symmetric spaces). This result was independently proved, by using an algebraic approach, by Paul-Andy Nagy. We apply this theorem to prove that the canonical connection of a compact naturally reductive space is unique, provided the space does not split off, locally, a sphere or a compact Lie group with a bi-invariant metric. From this it follows easily how to obtain the full isometry group of a naturally reductive space. This generalizes known classification results of Onishchick, for normal homogeneous spaces with simple group of isometries, and Shankar, for homogeneous spaces of positive curvature. This also answers a question posed by J. Wolf and Wang-Ziller. Namely, to explain why the presentation group of an isotropy irreducible space, strongly or not, cannot be enlarged (unless for spheres, or for compact simple Lie groups with a bi-invariant metric).
La innovación de tipo organizacional en las empresas manufactureras de Cartagena de Indias
Arraut Camargo,Luis Carlos;
Semestre Económico , 2008,
Abstract: this article shows an analysis of organizational-type innovations in the companies. the importance of work relies on the need for studying a modern and important phenomenon for companies, such as the organizational-type innovation, which helps to know how and why this organizational phenomenon is occurring, providing new elements for studying the innovation in the organizations. methodology used was that of explanatory case study. results from this study show that petrochemical-plastic sector companies (although not having an innovation management model) have a quality system which allows them to develop their innovation capacity.
La gestión de calidad como innovación organizacional para la productividad en la empresa
Arraut Camargo,Luis Carlos;
Revista EAN , 2010,
Abstract: this article shows the importance of innovation for academic professionals and company managers. the main topic is organizational innovation based on quality systems and their impact on productivity and competitiveness. the methodology used is that of explained multiple cases taken as a unit of analysis in the petrochemical- plastic sector in cartagena city, colombia. the principal results are, first, the importance of organizational innovation and how a group of manufacturing companies in cartagena, colombia, develops this kind of innovation based on quality systems iso as a positive effect on their productivity. this paper is the result of a doctoral degree research on organizational innovation in the petrochemical- plastic sector in cartagena, colombia.
Continuity of the Jones' set function $\mathcal{T}$
Javier Camargo,Carlos Uzcategui
Mathematics , 2015,
Abstract: Given a continuum $X$, for each $A\subseteq X$, the Jones' set function $\mathcal{T}$ is defined by $\mathcal{T}(A)=\{x\in X : \text{for each subcontinuum }K\text{ such that }x\in \textrm{Int}(K), \text{ then }K\cap A\neq\emptyset\}.$ We show that $\mathcal{D}=\{\mathcal{T}(\{x\}):x\in X\}$ is decomposition of $X$ when $\mathcal{T}$ is continuous. We present a characterization of the continuity of $\mathcal{T}$ and answer several open questions posed by D. Bellamy.
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