Active Principle
Mostrando 13-24 de 194 artigos, teses e dissertações.
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13. Quantificação de antibióticos beta-lactâmicos em medicamentos veterinários: determinação de amoxicilina e ampicilina por cromatografia líquida de alta eficiência
This work focused on the development and validation of an RP-HPLC-UV method for quantification of beta-lactam antibiotics in three pharmaceutical samples. Active principles analyzed were amoxicillin and ampicillin, in 3 veterinary drugs. Mobile phase comprised 5 mmol L-1 phosphoric acid solution at pH 2.00, acetonitrile with gradient elution mode and detecti
Quím. Nova. Publicado em: 2013
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14. As desventuras de Os Zeróis: cartuns e charges de Ziraldo, entre intenção e condição (1967-1972) / The misadventures of Os Zeróis: cartoons and caricatures by Ziraldo, between intention and condition
This dissertation analyses the iconographic series of cartoons and caricatures under the general title of Os Zéróis by the graphic artist Ziraldo Alves Pinto, between the years 1967 and 1972. As a parody of superheroes from North American comics such as Superman, Batman, Captain America , Os Zérois provides a critical perspective to the ideals and values
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
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15. Controle social e desenho institucional em Assistência Social no Município de Alagoinhas - Bahia: a fragmentação em questão
This study aimed to evaluate the effects of fragmentation of public policies and the process of construction and implementation of social control through Management Councils and Rights in Social Work, focusing on space-time the municipality in Alagoinhas, Bahia, between the years 2001 to 2008. They appear, at first, the theoretical frameworks, which fall pri
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/07/2011
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16. Estratégia de controle robusto para filtro ativo paralelo sem detecção de harmônicos de correntes
Resumo: As estratégias de controle convencionais de filtros ativos de potência paralelos (FAPP) empregam esquemas de detecção de harmônicos em tempo real, usualmente implementados com filtros digitais. Isso aumenta o número de sensores na estrutura do filtro, o que resulta em altos custos. Além disso, esses esquemas de detecção introduzem atrasos qu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/02/2011
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17. Augmentation of catecholamine release elicited by an Eugenia punicifolia extract in chromaffin cells
Plant extracts of Eugenia punicifolia (Kunth) DC., Myrtaceae, are used in Amazon region of Brazil to treat diarrhea and stomach disturbances, and as hypoglycemic medicine. We have recently shown that an aqueous extract of E. punicifolia augmented cholinergic neurotransmission in a rat phrenic nerve-diaphragm preparation. In this study, we investigated the ef
Revista Brasileira de Farmacognosia. Publicado em: 14/10/2011
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18. Concepções, princípios, práticas e reflexões de coordenadores pedagógicos das escolas municipais de educação infantil de novo hamburgo
How does a team of pedagogical coordinators of the primary education school system of the city of Novo Hamburgo organizes its action to follow more specifically the pedagogical aspect of the work done with the team that is under its coordination? What are the conceptions and principles of supervising that guide these professionals¿ practices in the exercise
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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19. Pesquisa Etnográfica : desvendando os significados culturais de uma professora e seus alunos sobre a língua inglesa e seu aprendizado / Ethnographic research: uncovering the cultural mean-ings from a teacher and his students about the english language and its learning
This ethnographic research sought to identify and understand how English language learners in a higher technology course in the business field attributed cultural meanings to the English language and its teaching and learning, and investigated how these cultural meanings interfered with the classroom dynamics. Some examples of this interference could be seen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/09/2010
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20. Identificação dos produtos de degradação química/eletroquímica do herbicida ametrina / Identification of degration products of chemical/electrochemical herbicide ametrine
In this study the identification of degradation products ametrina (AME), pesticides used on a large scale in the sugar industry. The improvement in the treatment of environmental conditions is of paramount importance to the agricultural regions, since the contamination of soil and groundwater contamination is almost inevitable. In relation to industries prod
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2010
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21. Otimização e validação de metodologia para determinação de aldicarbe e carbofurano em amostras de café bebida / Optimization and validation of methodology for determination of aldicarb and carbofuran in coffee samples
Domestic use of aldicarb and carbofuran has resulted in accidental or even intentional poisonings, making it a severe public health problem. A mixture of "chumbinho" (aldicarb) in coffee is frequently a poisoning agent due to strong odor and color of coffee which hide the presende of "chumbinho". Thus, the objective of this study was to adapt, optimize and v
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/02/2010
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22. Finite element analysis of actively controlled smart plate with patched actuators and sensors
The active vibration control of smart plate equipped with patched piezoelectric sensors and actuators is presented in this study. An equivalent single layer third order shear deformation theory is employed to model the kinematics of the plate and to obtain the shear strains. The governing equations of motion are derived using extended Hamilton's principle. L
Latin American Journal of Solids and Structures. Publicado em: 2010-09
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23. Efeitos do agrotóxico Vertimec no fitoplâncton: um estudo laboratorial e "in situ" / Effects of pesticide Vertimec on phytoplankton: a laboratorial and "in situ" study
Pesticides are chemical products applied to environment in order to control species which cause harm to agriculture. However, these chemicals can reach non-target species when flushed into aquatic ecosystems and even bring grave diseases to human health. Amongst many, Vertimec® stands out in a range of pesticides, being utilized in numerous agricultures, in
Publicado em: 2010
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24. Ethnographic research: uncovering the cultural mean-ings from a teacher and his students about the english language and its learning / Pesquisa Etnográfica : desvendando os significados culturais de uma professora e seus alunos sobre a língua inglesa e seu aprendizado
This ethnographic research sought to identify and understand how English language learners in a higher technology course in the business field attributed cultural meanings to the English language and its teaching and learning, and investigated how these cultural meanings interfered with the classroom dynamics. Some examples of this interference could be seen
Publicado em: 2010