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Search Results: 1 - 10 of 66072 matches for " Joilson Silva Ferreira "
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Sele??o de inoculantes à base de turfa contendo bactérias diazotróficas em duas variedades de arroz
Ferreira, Joilson Silva;Baldani, José Ivo;Baldani, Vera Lúcia Divan;
Acta Scientiarum. Agronomy , 2010, DOI: 10.4025/actasciagron.v32i1.73210.4025/actasciagron.v32i1.732
Abstract: the study consisted of a comparison of two-peat materials (brazil and canada) containing different c-total content. the peats were inoculated with strains of herbaspirillum seropedicae zae 94, burkholderia sp. m130, and azospirillum brasilense sp109, and monitored during a period of six months in relation to variation on humidity and survival of bacteria in the inoculant. the quantification of viable cells in the inoculant was measured by the most probable number (mpn) method. the rice seeds were pelleted with the respective inoculants, grown in pots containing soil and maintained outside a greenhouse. the dry mass accumulation, n percent, n-total and yield were determined during the plant cycle. the humidity content varied with storage period. the survival measurement showed that only burkholderia sp. m130 maintained the number of viable cells around 108 g-1 of peat, while there was a reduction in population of other strains. an increase of yield and total n of 13 and 19.4%, respectively in comparison to treatment fertilized with 40 kg n ha-1 was observed for variety iac4440, inoculated with strain zae94. there was no difference in yield of the ir42 inoculated with either zae94 or m130, as compared to n control treatment. no significant difference in development of both rice varieties was observed for both peat used. the results suggest that peat can be used as a carrier for production of an inoculant based on diazotrophic bacteria, since it allowed maintenance of a bacterial population up to 108 cells g-1 peat during the storage period of up to 100 days. the results obtained encourage the practice of inoculation of non-leguminous plants.
Sele o de inoculantes à base de turfa contendo bactérias diazotróficas em duas variedades de arroz = Selection of peats inoculants with diazotrophic bacteria in two rice varieties
Joilson Silva Ferreira,José Ivo Baldani,Vera Lúcia Divan Baldani
Acta Scientiarum : Agronomy , 2010,
Abstract: O estudo consistiu em avaliar a sobrevivência e a eficiência das bactérias diazotróficas Herbaspirillum seropedicae, Burkholderia sp. e Azospirillum brasilense, inoculadas em dois tipos de turfas. A sobrevivência das bactérias foi determinada pelo método do NúmeroMais Provável (NMP), durante o armazenamento de até seis meses. A eficiência foi avaliada pela contribui o destas bactérias nos parametros agron micos de acúmulo de massa seca e N-total dos gr os nas variedades de arroz IR42 e IAC4440. O experimento foi conduzido emvasos com solo, em delineamento inteiramente casualizado com três repeti es, em arranjo fatorial 2 x 4. Os dados obtidos mostraram que o inoculante contendo a estirpe de Burkholderia sp. manteve o número de células viáveis em torno de 108 cel. g-1 de turfa no período testado, enquanto nos demais inoculantes este número ficou em torno de 106. Os ensaios de inocula o n o mostraram diferen as significativas quanto à origem das turfas usadas como veículo sobre os parametros agron micos e sobrevivência das bactérias. O tratamento que continha H. seropedicae manteve o acúmulo de massa seca e N-total dos gr os estatisticamente igual ao tratamento que recebeu 40 kg N ha-1, embora tenham sido observados aumentos de 13 e 19,4% nestes parametros na variedade IAC4440. Os resultados mostraram-se promissores quanto à utiliza o da prática de inocula o na cultura do arroz. The study consisted of a comparison of two-peat materials (Brazil and Canada) containing different C-total content. The peats were inoculated with strains of Herbaspirillum seropedicae ZAE 94, Burkholderia sp. M130, and Azospirillum brasilense Sp109, and monitored during a period of six months in relation to variation on humidity and survival of bacteria in the inoculant. The quantification of viable cells in the inoculant was measured by the Most Probable Number (MPN) method. The rice seeds were pelleted with the respective inoculants, grown in pots containing soil and maintained outside a greenhouse. The dry mass accumulation, Npercent, N-total and yield were determined during the plant cycle. The humidity content varied with storage period. The survival measurement showed that only Burkholderia sp. M130 maintained the number of viable cells around 108 g-1 of peat, while there was a reduction in population of other strains. An increase of yield and total N of 13 and 19.4%, respectively in comparison to treatment fertilized with 40 kg N ha-1 was observed for variety IAC4440,inoculated with strain ZAE94. There was no difference in yield of the IR42 inoculated with either ZAE9
Masculinidade hegem?nica, vulnerabilidade e preven??o ao HIV/AIDS
Marques Junior,Joilson Santana; Gomes,Romeu; Nascimento,Elaine Ferreira do;
Ciência & Saúde Coletiva , 2012, DOI: 10.1590/S1413-81232012000200024
Abstract: the study aims to examine the relationship between masculinity, vulnerability and the prevention of hiv/aids, based on reports from young men from the so-called urban working classes, taking into account not only the meanings attributed to prevention by these subjects, but also considering the dialectical relationship between the individual and society. the conceptual framework encompasses the three main aspects of hegemonic masculinity, prevention and vulnerability. this involves qualitative research based on the perspective of dialectical hermeneutics that uses the method of interpretation of meanings. the analysis yielded two main results, namely hegemonic masculinity as a vulnerability factor, and myths and prejudices as factors of vulnerability to hiv/aids. by way of conclusion, it reinforces the need for discussion of prevention encompassing the need to put on the agenda the construction of the sex/gender system around which to articulate the social meanings of masculinity and femininity that influence the structural plan of affective sexual relations in general and hiv/aids in particular.
Educational system, income inequality and growth: the median voter's decision
Dias, Joilson;
Estudos Econ?micos (S?o Paulo) , 2005, DOI: 10.1590/S0101-41612005000100003
Abstract: i analyze a long run educational policy as a mechanism to close the income gap among low, median and high-income families. if the choice is made endogenous by the use of the median voter theorem, the results are as follow: i) public education system guarantees income convergence, however the income growth rate of the median voter is smaller; ii) the combination public and private (hybrid) educational system allows faster income growth rate, but income inequality is almost the natural outcome. the ending result is that the combination public and private system will prevail, since the income growth rate of the median voter is higher in this system. this might explain the persistence and differences of income inequality among the economies.
On multi-ideals and polynomial ideals of Banach spaces: a new approach to coherence and compatibility
Daniel Pellegrino,Joilson Ribeiro
Mathematics , 2011,
Abstract: What is an adequate extension of an operator ideal I to the polynomial and multilinear settings? This question motivated the appearance of the concepts of coherent sequences of polynomial ideals and compatibility of a polynomial ideal with an operator ideal, introduced by D. Carando el al. We propose a different approach by considering pairs (U_{k},M_{k})_{k=1}^{\infty}, where (U_{k})_{k=1}^{\infty} is a polynomial ideal and (M_{k})_{k=1}^{\infty} is a multi-ideal, instead of considering just polynomial ideals. Our approach ends a discomfort caused by the previous theory: for real scalars the canonical sequence (P_{k})_{k=1}^{\infty} of continuous k-homogeneous polynomials is not coherent according to the definition of Carando et al.
Almost Summing Polynomials: A Coherent and Compatible Approach the from the Infinite-Dimensional Holomorphy Viewpoint
Daniel Pellegrino,Joilson Ribeiro
Mathematics , 2011,
Abstract: In this note we explore the notion of everywhere almost summing polynomials and define a natural norm which makes this class a Banach multi-ideal which is a holomorphy type (in the sense of L.Nachbin) and also coherent and compatible (in the sense of D. Carando, V. Dimant and S. Muro) with the notion of almost summing linear operators. Similar results are not valid for the original concept of almost summing polynomials, due to G. Botelho.
A Methodology to Develop the Integration of the Environmental Management System with Other Standardized Management Systems  [PDF]
Manuel Ferreira Rebelo, Gilberto Santos, Rui Silva
Computational Water, Energy, and Environmental Engineering (CWEEE) , 2014, DOI: 10.4236/cweee.2014.34018
Abstract: Traditionally the global management system of an organization is frequently split into a number of individual management systems that are defined and implemented according to specific management systems standards (MSSs) as well as managed independently. The individual implementation of MSSs is an option that leads to several inefficiencies and sub-optimization of the global management system of an organization. As referred by ISO [1] the interested parties’ requirements increase. A more effective and efficient option for an organization is to integrate, into an integrated management system (IMS), the implementation and management of requirements of multiple MSSs. Certain difficulties are associated to the structuring process, implementation, verification, evaluation, improvement and progressive development of an IMS in the organizations. Several scholars have proposed various theoretical approaches regarding the integration of individual management systems (MSs) leading to the conclusion that there is not a common practice for all organizations as they encompass different characteristics. This paper aims to present and justify a designed methodology to be used by organizations to support the integration of various MSs. Among them are highlighted: the Environmental Management System (EMS) according ISO 14001 [2], the Quality Management System (QMS) according ISO 9001 [3], and the Occupational Health and Safety Management System (OH & SMS) according OHSAS 18001 [4]. The methodology was designed in the context of a Portuguese company, on sequence of an organizational diagnosis and a research that was performed through a questionnaire. The strategy and the research methods took into consideration the case study.
Avalia??o de uma proposta de preven??o do vazio existencial com adolescentes
Aquino, Thiago Antonio Avellar de;Silva, Joilson Pereira da;Figueirêdo, Ana Thaís Belém de;Dourado, érica Tailane Silva;Farias, Estefania Coeli Santos de;
Psicologia: Ciência e Profiss?o , 2011, DOI: 10.1590/S1414-98932011000100013
Abstract: the aim of this paper was to validate a preventive proposal of existential void in a group of high school students. 33 sophomore students participated in this study, 11 boys and 22 girls with average of 16.5 years old and amplitud of 14 and 18 years. the participants were distributed randomly in two groups. this way one experimental and one control group were constituted. the adolescents from the experimental group participated in an intervention program denominated prevention of existential void with the aim of increasing the sense of life sensation. in the first moment a pre-test (pil test) was applied on both groups and, in the end, a post-test was also applied. for the data analysis, a t-student test was used for repeated measures. the results suggest that the intervention promoted the development of the sense of life sensation, because the progression of existential realization level was noticed, as well as the regression of despair and existential void levels of the experimental group participants.
Taxa de desemprego e a escolaridade dos desempregados nos estados brasileiros: estimativas dinamicas de dados em painéis
Fraga, Gilberto J.;Dias, Joilson;
Economia Aplicada , 2007, DOI: 10.1590/S1413-80502007000300005
Abstract: the objective of this paper is to extend the unemployment theoretical model developed by marston (1985) and apply it to the brazilian states data. the main aspect of the proposed extension regards to the role exerted by the unemployed average human capital. as local attractive, the extended model considers the role of the average wage difference from the national and the economy structure. on the econometrics side, the main contribution regards to the dynamic panel data estimates that takes into consideration the endogeneity and omitted variables problems. the results are that the unemployed level of the education has a non-linear effect on the unemployment rate. for average levels of education above four years the education level led the unemployment rate to diminish. the state economy sector that helps to decrease the unemployment rate was the agricultural one, once the educations was accounted for.
Notas sobre um itinerário bibliográfico: onde est o os homossexuais negros?
Joilson Santana Marques Júnior
Em Pauta : Teoria Social e Realidade Contemporanea , 2012,
Abstract: O presente artigo tem como objetivo apresentar resultados da investiga o realizada, inicialmente, a partir de revis o bibliográfica acerca da quest o racial e da homossexualidade. A experiência singular da homossexualidade negra, deslocada do lugar reservado à identidade negra ou identidade gay, produz contextos diferenciados de preconceitos e discrimina o. Assim, a partir da sele o de uma bibliografia de referência na discuss o da homossexualidade, procura-se mapear algumas quest es: se há identifica o de homossexuais negros; como eles aparecem nos textos e se, em algum mo-mento, tornam-se eixo central de análise. Como resultado preliminar, conclui-se que, em um primeiro momento, esses sujeitos s o identificados racialmente, até porque s o os negros e mesti os os alvos de estudos de base antropo-criminológica. Mas, com o incremento de pesquisas menos discriminatórias que revelam a legitimidade desse desejo, posteriormente, os sujeitos das investiga es e estudos tornam-se brancos.
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