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Isolamento, armazenamento e determina o da coloniza o por fungos “dark septate” a partir de plantas de arroz. = Isolation, storage and determination of fungal colonization “dark septate” from rice plants.
Karen Gon?alves Ribeiro,Gilmara Maria Duarte Pereira,Cátia Aparecida Mosqueira,Alexandre Cardoso Baraúna
Agro@mbiente On-line , 2011,
Abstract: Endophyte fungi known as DSEF can be plant-growth-promoting. Aiming to improve a methodology for the isolation, storage and determine the rice roots colonization by “dark septate”, a study was developed based on the achievement of these microorganisms in Oryza glumaepatula plants collected in Amazon region. The plant roots of twelve O. glumaepatula samples were sectioned, disinfected, and placed in plates with agar-malte medium added of chloramphenicol, sulphametazole and trimetropin. The isolates were evaluated in relation of dark septate characteristics and stored in distilled water, and in distilled water added of glycerol. Five isolates considered dark septate were re-inoculated in O. glumaepatula and O. sativa, and also analyzed through amplification and sequencing of ITS1-5.8S-ITS2 region. The agar-malte medium was efficient to isolate dark septate, and more than 50 isolates were obtained. The distilled water and also distilled water added of glycerol were efficient to maintain the fungus culture at least 12 months. The five isolates re-inoculated were able to colonize both O. glumaepatula and O. sativa, without pathogenic symptoms observed. The molecular approach reveled that these fungus are not similar to each other and also to others dark septate already described. These results show that the proposed methodology was efficient to obtain distinct fungus species and O. glumaepatula is a host to high diversity of this fungus group.=Os fungos endofíticos conhecidos como DSEF ou “dark septate” podem ser promotores de crescimento vegetal. Com o objetivo de aperfei oar uma metodologia para o isolamento, armazenamento e determina o da coloniza o de raízes de arroz por fungos “dark septate” desenvolveu-se um estudo a partir da obten o destes microrganismos em plantas de Oryza glumaepatula coletadas em ambientes amaz nicos. As raízes das plantas de doze amostras de O. glumaepatula foram seccionadas, desinfestadas e dispostas em placas com o meio ágarmalte adicionado de cloranfenicol, sulfametazol e trimetropina. Os isolados obtidos foram avaliados quanto às características de “dark septate” e armazenados em água destilada com e sem a adi o de glicerol. Cinco isolados fúngicos considerados “dark septate” foram reinoculados em plantas de O. glumaepatula e em O. sativa e, também,caracterizados molecularmente através da amplifica o e sequenciamento da regi o ITS1-5.8S-ITS2. O meio de cultura ágar-malte foi eficiente para a obten o de “dark septate”, obtendo-se mais de 50 isolados. O armazenamento em água destilada e em água destilada adicionada de gli
Estudo comparativo da eficiência da difenilcarbazida e do óleo de coco saponificado microemulsionados na inibi??o da corros?o de a?o carbono
Rossi, Cátia G. F. T.;Scatena Jr, Hélio;Maciel, Maria Aparecida M.;Dantas, Tereza N. C.;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000500014
Abstract: the effectiveness of microemulsions (me) of saponified coconut oil (ocs-me) and diphenylcarbazide (dc-me) on a carbon steel corrosion inhibition process was evaluated using an electrochemical method of polarization resistance. the me was prepared with ocs, butanol, kerosene and saline solutions. ocs-me and dc-me showed highest inhibitions effects (77% and 92%, respectively) at lower concentrations (0.5% and 0.48 - 0.50%, respectively). the surfactant ocs (in h2o) showed lower efficiency (63% at 0.20 - 0.25% concentration). the greatest inhibitory effect of dc-me could be correlated with the chemical structure and the rich o/w me system, which are very important for adsorption phenomena in interfacial me systems.
NUTRIENT DIGESTIBILITY AND PERFORMANCE IN BROILER CONSUMING DIETS FORMULATED WITH DIFFERENT FIBER LEVELS AND SUPLEMENTED WITH ENZYMATIC COMPLEX DIGESTIBILIDADE DOS NUTRIENTES E DESEMPENHO DE FRANGOS DE CORTE CONSUMINDO DIETAS FORMULADAS COM DIFERENTES NíVEIS DE FIBRA E SUPLEMENTADAS COM ENZIMAS EXóGENAS
Cátia Chilanti Pinheiro,Joseane Crystina Costa Rego,Tatiane Aparecida Ramos,Bárbara Karolina Ratier da Silva
Ciência Animal Brasileira , 2008,
Abstract: The effects of fiber level and the enzymatic supplementation in diets for broilers were evaluated in two trials. The experimental treatments were diets with high and low fiber level and with enzymatic supplementation (α-galactosidase, cellulase, amylase e protease). In the first trial (14 to 19 days of birds age), 190 broilers were randomly distributed in a 2x2 factorial arrangement (fiber x enzymes), placed in metabolic cages between (9-10 birds/cage, 5 cages per treatment). It was evaluate the metabolizability (MET) of the dry matter (DM), the crude protein (CP) and the energy (E), the total apparent digestibility coefficient (TDC) for fat (F) and acid detergent fiber (ADF), the apparent metabolisable energy (AME) and the performance. Four replicates of each treatment were maintained to use in the second trial. In the 21st day age, after adaptation to the intake of the diets with indicator, the broilers were slaughtered and the ileal content was collected to evaluation of the ileal apparent digestibility coefficient (IDC) for DM, CP, E, F and the weight of the caeca. The high fiber level resulted in lower MET of DM, E, CP, and lower TDC of F and ADF (P<0.05), as well as lower IDC of DM and E (P<0.01). Enzymatic supplementation reduced the fiber effect on MET of DM, E, CP and on the TDC of ADF (P<0.05). Higher empty weight of the caeca of the birds on the high fiber diet was observed (P<0.01), as well as lower weight gain (P<0.03) and worst feed conversion ratio (P<0.01). The performance of broilers was more related with ileal apparent digestibility then with the total apparent digestibility of the nutrients and the energy. KEY WORDS: Caeca, ileal digestibility, metabolizability, performance, total digestibility. Avaliaram-se os efeitos do nível de fibra e da suplementa o enzimática em dietas de frangos de corte em dois experimentos. Os tratamentos experimentais foram as dietas formuladas com alta ou baixa fibra e suplementa o enzimática (α-galactosidase, celulase, amilase, protease). No primeiro experimento (14 a 19 dias de idade dos animais), distribuíram-se aleatoriamente 190 aves em arranjo fatorial 2x2 (fibra x enzima), em gaiolas metabólicas com 9-10 aves/gaiola, cinco gaiolas por tratamento. Avaliaram-se a metabolizabilidade (MET) da matéria seca (MS), a proteína bruta (PB) e a energia (E), os coeficientes de digestibilidade total aparente (CDT) da gordura (G) e a fibra em detergente ácido (FDA),a energia metabolizável aparente (EMA) e o desempenho. Quatro repeti es de cada tratamento foram mantidas para o segundo experimento. No 21o dia de i
STRUCTURAL RECOVERY AND PRODUCTION OF TIFTON 85 GRASS IN COMPACTED RED-YELLOW ARGISOL RECUPERA O ESTRUTURAL E PRODU O DE CAPIM-TIFTON 85 EM UM ARGISSOLO VERMELHO-AMARELO COMPACTADO
Eduardo Nunes de Magalh?es,Geraldo César de Oliveira,Eduardo da Costa Severiano,tia Aparecida de Pinho Costa
Ciência Animal Brasileira , 2009,
Abstract: The soil compaction promoted for animal trampling and traffic of machines, is one of great impediments to attainment of raised pasture productivities. However, the soil-pasture relationship studies have not taken in consideration the biological soil descompaction, as well as its effect in productivity. This study objective was to evaluate dry mass production of Tifton 85 grass in function of different soil compaction degrees and potential of structural quality recovery of an Red-Yellow Argisol, promoted by forage plant. The experiment was carried out in green house, in delineation entirely randomized, with the tifton 85 grass crop in the following degrees of compacting: 64%, 84%, 90%, 93% and 100%, gotten for the assay of Normal Proctor. The attributes had been evaluated the soil physical- hydric, least limiting water range and forage dry mass production. Tifton 85 grass recovered the structure of Red-Yellow Argisol. The soil descompaction promoted adequate soil biophysics conditions to forage development. The dry mass production increased with the cutting succession independent of initial degree of soil compaction. KEY WORDS: Biological soil descompaction, Cynodon sp., least limiting water range, recovery of pastures. A compacta o do solo, promovida pelo pisoteio animal e pelo tráfego de máquinas, é um dos grandes entraves à obten o de elevadas produtividades das pastagens. Entretanto, os estudos de rela o solo–pastagem n o têm levado em considera o a descompacta o biológica do solo, nem seus efeitos na produtividade. O objetivo deste estudo foi avaliar a produ o de massa seca do capim-tifton 85 em fun o de diferentes graus de compacta o do solo e o potencial de recupera o da qualidade estrutural de um argissolo vermelho-amarelo, promovida pela planta forrageira. Desenvolveu-se o experimento em casa de vegeta o, mediante delineamento inteiramente casualizado, com o cultivo do capim-tifton 85 nos seguintes graus de compacta o: 64%, 84%, 90%, 93% e 100%, obtidos pelo ensaio de Proctor Normal. Avaliaram-se os atributos físico-hídricos do solo, o intervalo hídrico ótimo e a produ o de massa seca da forrageira. O capim-tifton 85 recuperou a estrutura do argissolo vermelho-amarelo. A descompacta o do solo promoveu condi es biofísicas do solo adequadas ao desenvolvimento da forrageira. A produ o de massa seca aumentou com a sucess o dos cortes, independentemente do grau de compacta o inicial do solo. PALAVRAS-CHAVES: Cynodon sp., descompacta o biológica do solo, intervalo hídrico ótimo, recupera o de pastagem.
Erratum to “Characterization of Selective Antibacterial Peptides by Polarity Index”
C. Polanco,J. L. Samaniego,T. Buhse,F. G. Mosqueira
International Journal of Peptides , 2012, DOI: 10.1155/2012/613053
Abstract:
Promotores de justi?a e novas formas de atua??o em defesa de interesses sociais e coletivos
Silva, Cátia Aida;
Revista Brasileira de Ciências Sociais , 2001, DOI: 10.1590/S0102-69092001000100007
Abstract: the article discusses the ways in which public prosecutors have been acting in the defense of collective and social interests. it tries to show the fluid contours that this kind of intervention has acquired when it takes into account the new institutional design of the brazilian public ministry (ministério público), the regulation of new rights and the introduction of new judicial or extra judicial concepts and procedures in brazil.
Desempenho da gest?o pública: que variáveis comp?em a aprova??o popular em pequenos municípios?
Lubambo, Cátia W.;
Sociologias , 2006, DOI: 10.1590/S1517-45222006000200005
Abstract: the analysis of public management carried out in this study focuses on explanatory elements associated to government performance in small towns. differences found on public management performance in towns, defined according to some specific elements that we try to explain, reveal not only the variety of contexts and conditions but also the diversity of constraints that decentralization finds in local governments. in literature, some studies point out that structural elements such as government's tax performance would determine the higher or lower possibility for success of a given local government. other works present elements directly associated to the level and nature of demands and the resulting form of local provision as being crucial for approval or not of the administration. yet other studies suggest that investigations proceed in the perspective of effective political-institutional conditions of implementation of social policies at municipal level. in face of evidence of so many distinct elements that seem to be relevant for the performance of the municipal management, we ask: is there any correlation between the administration's attributes and its approval ratings? this work examines a universe of 75 towns of northeastern brazil, distributed over the states of pernambuco, rio grande do norte, and paraíba, during the 1993-1996 term. it discusses and elects the approval rating as the indicator of each administration's performance and it investigates the influence of specific factors, which allegedly explain such performance. after an analysis of "clusters", results of the study end up pointing out similarities and differences between groups of towns, with distinct levels of administration performance, stressing the prevalence of elements associated to the effective action of the administration as determinants for popular approval.
A história da análise de redes e a análise de redes em história
Cátia Antunes
Revista da Faculdade de Letras : Historia , 2012,
Abstract: This article defines the concept of network when applied to historical research, underlining the importance of social network analysis for historical studies. The article starts with a state of the art regarding the conceptualization, definition and application of the concept ‘networks’ to different disciplines, moving then towards the effects of this type of analysis among historians dedicated to themes of Economic and Social History in general.
Rela es entre profissionalismo e política nas carreiras jurídicas
Silva Cátia Aida
Revista Brasileira de Ciências Sociais , 2003,
Abstract:
Promotores de justi a e novas formas de atua o em defesa de interesses sociais e coletivos
Silva Cátia Aida
Revista Brasileira de Ciências Sociais , 2001,
Abstract: O artigo discute as formas de atua o dos promotores de justi a na defesa de interesses coletivos e sociais. Procura mostrar os contornos fluidos que as interven es vêm adquirindo, tendo em vista o novo desenho constitucional do Ministério Público, a regulamenta o de novos direitos e a introdu o de novas concep es e procedimentos judiciais e extrajudiciais no Brasil.
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