Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2020 ( 69 )

2019 ( 742 )

2018 ( 842 )

2017 ( 774 )

Custom range...

Search Results: 1 - 10 of 475565 matches for " Eugênia A.;Castro "
All listed articles are free for downloading (OA Articles)
Page 1 /475565
Display every page Item
Valida??o intralaboratorial de método para determina??o de aflatoxina M1 em leite por cromatografia em camada delgada
Souza, Scheilla V. C. de;Vargas, Eugênia A.;Castro, Luciana de;Junqueira, Roberto G.;
Ciência e Tecnologia de Alimentos , 2003, DOI: 10.1590/S0101-20612003000400039
Abstract: a method for aflatoxin m1 determination in milk by thin layer chromatography was otimized and in house validated. steps of extraction, clean-up, detection and quantification by visual and densitometric analysis were standardized. in method validation were employed standard solutions and spiked samples in levels varying from 0.027μg/l to 0.970μg/l. linearity, specificity, trueness, precision, detection and quantification limits were the parameters evaluated. average recovery values in quantification range were from 84.2% to 99.0% for visual analysis and from 85.2% to 105.2% for densitometric analysis, with cvs values from 2.3% to 9.8% and from 3.6% to 13.9%, respectively. the detection limit was 0.036μg/l and the quantification 0.045μg/l, according to national and international regulations for aflatoxin m1 in milk.
Efeitos da agressividade infantil para o sofrimento psíquico de professores em diferentes momentos de carreira
Castro, Rebeca Eugênia Fernandes de;Souza, Maria Abigail de;
Estudos de Psicologia (Natal) , 2012, DOI: 10.1590/S1413-294X2012000200010
Abstract: teachers' psychological distress has been widely studied in the literature, concerning several factors. this paper investigates the impact of children′s aggression in classroom as a source of teachers' distress. twelve public school teachers from s?o paulo city were interviewed - 11 female and 1 male - distributed according to three different stages of the career: initial (1 to 6 years), intermediate (12 to 18 years) and final phase (last 5 years of the career). the interviews were recorded, transcribed and data were categorized considering the simple frequency of occurrence. data analysis revealed different perceptions of classroom aggression, feelings and management strategies, depending on the phase of the teaching career. from these findings, it was possible to reflect and to present some considerations for outlining preventive interventions.
Agressividade infantil no ambiente escolar: concep??es e atitudes do professor
Souza, Maria Abigail de;Castro, Rebeca Eugênia Fernandes de;
Psicologia em Estudo , 2008, DOI: 10.1590/S1413-73722008000400022
Abstract: the participation of all people, parents, children and teachers, involved in children aggressiveness in the school environment is needed to study the phenomenon. this approach has been undertaken through a larger research, including current study, which focuses on the teacher's point of view. teachers' conceptions and attitudes about children aggressive expressions in school are investigated. a qualitative assessment was undertaken. it comprised individual semi-directed interviews with 15 teachers of a public school in a low-income population suburb in s?o paulo sp brazil. most cited aggressive attitudes include revolt and physical aggression among students. the latter complaint is the main reason that motivates teachers to send children to play-therapy. conflict administration strategies involve dialogue and comprehension. data suggest that concern by the teacher on children still exists in whom they hope to obtain attention and care.
Neonatal treatment with fluoxetine reduces depressive behavior induced by forced swim in adult rats
Mendes-da-Silva, Cristiano;Souza, Sandra Lopes de;Barreto-Medeiros, Jairza Maria;Freitas-Silva, Sebasti?o Rogério de;Antunes, Daniela Eugênia Costa;Cunha, Allan Delano Urbano;Ribas, Valdenilson Ribeiro;Fran?a, Maria Flávia Sim?es de;Nogueira, Maria Inês;Manh?es-de-Castro, Raul;
Arquivos de Neuro-Psiquiatria , 2002, DOI: 10.1590/S0004-282X2002000600008
Abstract: serotonin plays a role at the pathophysiology of depression in humans and in experimental models. the present study investigated the depressive behavior and the weigh evolution in adult rats (60 days) treated from the 1st to the 21st postnatal day with fluoxetine, a selective serotonin reuptake inhibitor (10 mg/kg, sc, daily). the depressive behavior was induced by the forced swim test (fst). the animals were submitted to two sessions of fst: 1st session for 15 min and the 2nd session 24h later, for 5 min. during the 2nd session the latency of the attempt of escape (lae) and behavioral immobility (bi) were appraised. the fluoxetine group when compared to the control group, showed an increase in lae and a decrease in bi. the neonatal administration of fluoxetine reduced the depressive behavior in adult rats, possibly by increase in the brain serotonergic activity. this alteration can be associated to process of neuroadaptation.
The girl from the Church of the Sacrament: a case of congenital syphilis in XVIII century Lisbon
Souza, Sheila Mendon?a de;Codinha, Sonia;Cunha, Eugénia;
Memórias do Instituto Oswaldo Cruz , 2006, DOI: 10.1590/S0074-02762006001000018
Abstract: syphilis is a sexually or congenitally transmitted infectious disease with an impact on the health of human populations that has undergone important cycles in different countries and periods of history. its presence was first diagnosed in europe in the late xiv century. in portugal, although there are various written records of the infection in the last centuries, there are rare references to it in archeological findings (mummified bodies are also rare in portugal). the current study describes a probable case of congenital syphilis in an 18-month-old girl buried in the church of the sacrament in lisbon. her body, dating to the xviii century, was found mummified together with dozens of others, still not studied. symmetrical periostitis of the long bones, osteitis, metaphyseal lesions, left knee articular, and epiphyseal destruction, and a rarefied lesion with a radiological appearance compatible with wimberger's sign all point to a diagnosis of congenital syphilis. the diagnosis of this severe form of the infection, possibly related to the cause of death in this upper-class girl, calls attention to the disease's presence in xviii century lisbon and is consistent with the intense mobilization at the time in relation to the risks posed by so-called heredosyphilis. it is the first case of congenital syphilis in a child reported in archeological findings in portugal, and can be correlated with other cases in skeletons of adults buried in cemeteries in lisbon (in the xvi to xviii centuries) and coimbra (xix century). finally, this finding highlights the need to study the entire series of mummified bodies in the church of the sacrament in order to compare the paleopathological findings and existing historical documents on syphilis, so as to expand the paleoepidemiological knowledge of this infection in xviii century lisbon.
Extra??o sortiva em barra de agita??o para análise de fármacos em fluidos biológicos
Chaves, Andréa Rodrigues;Queiroz, Maria Eugênia Costa;
Química Nova , 2008, DOI: 10.1590/S0100-40422008000700037
Abstract: a novel solventless sample preparation, stir-bar sorptive extraction (sbse), for extraction, and sample enrichment of organic compounds from biological fluids, is described in this manuscript from principle to applications. the sbse is based on sorptive extraction, whereby the compounds are extracted into a polymer coating, polydimethylsiloxane (pdms), on a magnetic stirring rod. the extraction is controlled by the partitioning coefficient of drugs between the pdms and sample matrix, and upon the sample-extraction medium phase ratio. the sbse technique has been applied successfully, with high sensitivities, to biomedical analysis of volatiles and for semi-volatiles drugs from biological sample, including urine, plasma, and saliva. sbse combined with in situ derivatization, drugs quite more polar (e.g. metabolites) also can be analyzed.
L1 Educational Studies in Language and Literature , 2009,
Abstract: This article analyzes the work of setting up/implementing a School Radio (SR) in a publicelementary school in the region neighboring the University of Caxias do Sul, RS, Brazil. The study aimsto strengthen the teaching/learning dynamic of Portuguese Language in schools, as well as to developmultiple competencies in the individuals involved in the production of radio genres for school media. Thetheoretical precepts arise from socio-discursive interactionism and the methodological framework issustained by the action-research principles. The results observed up to the present suggest that there is apotential for the SR to strengthen the socio-discursive interaction in school communities and to developmultiple competencies in students.
Calcifica o vascular na DRC Vascular calcification in CKD
Maria Eugênia F Canziani,Rosa Maria A. Moysés
Jornal Brasileiro de Nefrologia , 2011, DOI: 10.1590/s0101-28002011000200017
Calcifica o vascular na DRC Vascular calcification in CKD
Maria Eugênia F Canziani,Rosa Maria A Moysés
Jornal Brasileiro de Nefrologia , 2011, DOI: 10.1590/s0101-28002011000500007
O julgamento de pares de crian?as com dificuldades interativas após um modelo ampliado de interven??o
Castro, Rebeca Eugênia Fernandes de;Melo, Márcia Helena da Silva;Silvares, Edwiges Ferreira de Mattos;
Psicologia: Reflex?o e Crítica , 2003, DOI: 10.1590/S0102-79722003000200011
Abstract: the literature on social competence has demonstrated that rejection by peers during childhood is a factor of influence in the development of antisocial behaviors. the present study aimed to measure the effectiveness of an extended clinical intervention model, involving parents, teachers and peers of children with interaction difficulties. the intervention was developed at a public school at osasco-sp suburb, which was a ipusp psychological center's branch. the subjects were 38 second-grade children, belonging to three groups: a) 13 to the psychological assistance group; b) 12 to the control group and c) 13 to the social validation group. their sociometric status was measured by interviews with respective classes in three different moments: before, during and after intervention. children attending the intervention program had a significant increase of social competence compared to those belonging to the control group and they also reached a similar sociometric status sociometric in comparison to the validation group.
Page 1 /475565
Display every page Item

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