oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 2 )

2019 ( 172 )

2018 ( 327 )

2017 ( 339 )

Custom range...

Search Results: 1 - 10 of 186907 matches for " Jander Rodrigues de Souza "
All listed articles are free for downloading (OA Articles)
Page 1 /186907
Display every page Item
Seletividade de inseticidas a Orius insidiosus
Torres, Fabrícia Zimermann Vilela;Carvalho, Geraldo Andrade;Souza, Jander Rodrigues de;Rocha, Liuz Carlos Dias;
Bragantia , 2007, DOI: 10.1590/S0006-87052007000300009
Abstract: the use of selective pesticides to natural enemies is important for the success of integrated pest management programs. the objective of this study was to investigate lethal and sublethal effects of some insecticides, used to control pests in rose crops, on eggs and fifth instar-nymphs of orius insidiosus (say) under laboratory conditions. commercial formulations of the following insecticides were diluted in distilled water (concentration in g a.i./100 ml): endosulfan (0.021), formetanate (0.04), spinosad (0.0144) and deltamethrin (0.0008). distilled water was used as control. the tests were carried out in climatic chamber at 25±2oc, rh of 70±10% and 12 h-photophase. the eggs of the predator laid on bidens pilosa l. stems were treated by dipping the stems containing eggs into insecticide solutions for five seconds. fifth instar-nymphs were treated with the insecticides using a potter spray tower. the total effect of the insecticides was estimated and they were classified according to the toxicity categories proposed by the iobc. deltamethrin was harmful and, endosulfan, formetanate and spinosad were slightly harmful to eggs and fifth instar-nymphs of o. insidiosus. endosulfan and formetanate did not affect negatively the reproductive characteristics of the females originated from treated eggs. endosulfan and spinosad reduced the number off eggs laid by the females originated from the treated fifth instar-nymphs, and spinosad affected negatively the viability of these eggs.
Avalia o da toxicidade de inseticidas utilizados em roseira para adultos de Orius insidiosus (Say) (Hemiptera: Anthocoridae) = Toxicity evaluation of insecticides used in rose crops to adults of Orius insidiosus (Say) (Hemiptera: Anthocoridae)
Fabrícia Zimermann Vilela Torres,Geraldo Andrade Carvalho,Jander Rodrigues de Souza,Luiz Carlos Dias Rocha
Acta Scientiarum : Agronomy , 2007,
Abstract: Percevejos do gênero Orius têm sido usados como agentes entomófagos emdiversos sistemas agrícolas, obtendo-se sucesso no controle de diferentes pragas. Em roseira esses percevejos podem ser utilizados no controle de tripes, a principal praga desse cultivo. Objetivou-se avaliar o impacto de inseticidas utilizados em roseira sobre adultos de Orius insidiosus (Say), por meio da pulveriza o direta sobre os percevejos e por ingest o de ‘alimento tratado. Utilizaram-se formula es comerciais dos produtos (g i.a. 100 mL-1): endosulfam (0,021), formetanato (0,04), espinosade (0,0144) e deltametrina (0,0008), sendo que somente endosulfam foi avaliado em teste de ingest o de alimento tratado. Utilizou-se água destilada no tratamento controle. Os bioensaios foram realizados em laboratório. Para pulveriza o dos produtos sobre os adultos utilizou-se torre de Potter. Nos testes de ingest o, ovos de Anagasta kuehniella (Zeller) foram imersos na calda inseticida e oferecidos ao predador. Avaliaram-se a mortalidade, a reprodu o e a capacidade predatória dosindivíduos sobreviventes. Em pulveriza o, o inseticida deltametrina foi nocivo aos adultos de O. insidiosus; espinosade foi moderadamente nocivo e endosulfam e formetanato foram levemente nocivos. Nos testes de ingest o de alimento tratado, endosulfam foi levemente nocivo. A capacidade predatória de O. insidiosus n o foi afetada pelo endosulfam em nenhum dos testes realizados. Predatory bugs of the genus Orius have been used as entomophagous agents in several agricultural systems, obtaining success in the control of different pests. In rose crops these bugs can be used in the control of thrips, the principal pest of this crop. This study aimed to evaluate the impact of some insecticides used in rose crops to adults of Orius insidiosus (Say), by direct spraying on the bugs and by ingesting contaminated food. Commercial formulations of the insecticides used (g a.i. 100 mL-1) were: endosulfan (0.021), formetanate (0.04), spinosad (0.0144) and deltamethrin (0.0008). Out of these, only endosulfan was evaluated as for ingestion ofcontaminated food test. Distilled water was used as control. The bioassays were carried out in laboratory. A Potter’s tower was used to spray the products on adults. Eggs of Anagasta kuehniella (Zeller) were dipped in the insecticide solutions and offered to the predator. The mortality, the reproduction and the predatory capacity of the survivors were evaluated. By spraying, deltamethrin was harmful to adults of O. insidiosus; spinosad was moderately harmful and endosulfan and formetanate were
O conceito de esclarecimento em Horkheimer, Adorno e Freud: apontamentos para um debate
Souza, Mauricio Rodrigues de;
Psicologia & Sociedade , 2011, DOI: 10.1590/S0102-71822011000300004
Abstract: this article analyses the concept of enlightenment in horkheimer, adorno and freud. therefore, it traces a parallel between two of the most representative works of these authors in terms of cultural criticism: the concept of enlightenment and the future of an illusion, respectively. although an initial approach might suggest different theoretical perspectives, we emphasize that they can be taken as complementary in defense of a more adequate using of conceptual thought.
Etologia, Antropologia e cinema: uma etnografia da violência em Sob o Domínio do Medo
Souza, Mauricio Rodrigues de;
Psicologia USP , 2009, DOI: 10.1590/S0103-65642009000400008
Abstract: this article is as an attempt to comprehend the phenomenon of aggression in its multiple aspects. in such a task we will take into account the theoretical references of ethology and social anthropology. in order to better illustrate the ideas exposed here, cinema will be used as an ethnographical resource. therefore, some parts of the movie straw dogs (1971) are going to be analyzed in more details.
A psicanálise e o complexo de édipo: (novas) observa??es a partir de Hamlet
Souza, Mauricio Rodrigues de;
Psicologia USP , 2006, DOI: 10.1590/S0103-65642006000200007
Abstract: this article is an exercise of comprehension of the oedipal complex in psychoanalysis. therefore, beyond tracing the development of the concept in the freud's work, it takes the story of hamlet as an illustrative device to testify through art the possible manifestations of the oedipian phenomenon. in conclusion, it also emphatises the possible inter-relations between psychoanalysis and tragedy.
Por uma educa??o antropológica: comparando as idéias de Bronislaw Malinowski e Paulo Freire
Souza, Mauricio Rodrigues de;
Revista Brasileira de Educa??o , 2006, DOI: 10.1590/S1413-24782006000300009
Abstract: this article analyses the ideas of malinowski and paulo freire proposing some proximities between anthropology and pedagogy. among the possibilities resulting from such a meeting, one certainly deserves special attention: the recommendation that anthropologists and teachers should always respect the community knowledge previously acquired by students and "natives" as the real starting point for the construction of science. in this way, it is possible to consider that in both disciplines knowledge be associated with a respect for alterity, a lesson they must share not only with other disciplines, but especially with the wider community.
QUANDO OS “OUTROS” SOMOS “NóS”: MIGRA O CAPIXABA E MORALIDADE CAMPONESA NO SUDESTE PARAENSE
Edimilson Rodrigues de Souza
Geografares , 2010,
Abstract: Contribui o para os estudos migratórios, apresentando a trajetória de camponeses capixabas que se deslocaram do Espírito Santo para o Estado do Pará, na regi o amaz nica.Entendimento dos efeitos desse deslocamento na (re)organiza o e (re)defini o dos papeis sociais, ponderando a respeito da maneira como foi (re)construída ou (re)significada a no o de pertencimento vinculada ao imaginário social, em se tratando de valores como honestidade, reciprocidade e respeito. Em nível de conclus o, associa o entre memória e trajetória no processo da constru o de identidades sociais permeadas por conflitos e lutas em busca da afirma o do grupo.
Humaniza o e qualidade no contexto hospitalar: novo olhar, novas práticas sociais
Rodrigues, Amanda de Souza
Textos & Contextos (Porto Alegre) , 2002,
Abstract: N o possui resumo
Por uma educa o antropológica: comparando as idéias de Bronislaw Malinowski e Paulo Freire
Mauricio Rodrigues de Souza
Revista Brasileira de Educa??o , 2006,
Abstract: El presente trabajo analiza las ideas de Malinowski y Paulo Freire, proponiendo algunas proximidades entre la antropología y la pedagogía. Entre las posibilidades resultantes de tal encuentro, una ciertamente merece destaque: la recomendación de que antropólogos y profesores respeten siempre el saber-hacer comunitario y previamente adquirido por sus respectivos respectivos otros, alumnos o nativos , como un verdadero punto de partida para la construcción de la ciencia. De esta forma se puede pensar que en ambas disciplinas el conocimiento camina junto a un respeto por la alteridad, lección ésta que ellas deben compartir no solamente con otras áreas del saber, mas especialmente con la comunidad más amplia.
Immobilization of Lipase from Candida rugosa on Mesoporous MCM 41  [PDF]
Roberto Rodrigues de Souza, Renata D. M. Ferreira
Journal of Biosciences and Medicines (JBM) , 2014, DOI: 10.4236/jbm.2014.24011
Abstract:

The use of enzymatic route for production of biofuels is growing up due the mild reaction conditions that this method provides, as well as reducing SOx emission. To reduce costs, it’s necessary to immobilize the enzyme, making possible to use it continuously as biocatalyst. The aim of this work was to measure the influence of the mass of support and pH used for immobilization of commercial lipase from Candida rugosa acquired by Sigma laboratory. The immobilization method chosen was adsorption on mesoporous and hydrophobic support MCM 41, this has been treated with nitric acid 10% v/v to remove any organic residue. Then, 20 ml of enzymatic solution in phosphate buffer (pH 6.0, 7.0 and 8.0; 50 mM) and 1 g/L was placed under constant stirring with 0.30 and 0.45 g of support. Aliquots were taken from the reaction medium and analyzed by spectrophotometry at 10 minutes intervals. A volume of 0.2 ml of supernatant was put with 1.8 ml of substrate p-NFL at 0.18 g/L, and the absorbance at 410 nm was analyzed. In four cases there was a sharp reduction of supernatant’s activity at first 10 minutes, that ratifies the big affinity of the enzyme for the support and the negative influence of pH about the activity. Using the calibration curve, it was possible to calculate the final activity of each immobilization batch. This work suggests the occurrence of diffusional effects, which means that the enzyme mobility was restricted due the excessive amount of support, and then, it lost a part of accessibility to substrate, reflecting in not expressive activity values, and changing the state of ionization of the components of the system.

Page 1 /186907
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.