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The involvement of girls and boys with bullying : an analysis of gender differe...
Silva, Marta Angélica Iossi; Pereira, Beatriz Oliveira; Mendonça, Denisa; Nunes, Berta; Oliveira, Wanderlei Abdio deThis exploratory and cross-sectional study aimed to identify the prevalence of bullying in a group of students and analyze the data regarding the gender of those involved in the violence. A questionnaire adapted from Olweus was applied in seven elementary education schools in Portugal. The sample consisted of 387 students between 7 and 14 years old. Data are presented in terms of descriptive statistics and diff...
Descrever o bullying na escola : estudo de um agrupamento de escolas no interio...
Pereira, Beatriz Oliveira; Silva, Marta Iossi; Nunes, BertaO bullying define-se como o comportamento agressivo entre pares, intencional e continuado. O bullying na escola registra-se em diferentes tipos tais como o físico, verbal e indirecto e em diferentes espaços. O objectivo desta investigação foi diagnosticar o bullying na escola e caracterizar as crianças vítimas quanto à prevalência, ISSN 1518-3483 Rev. Diálogo Educ., Curitiba, v. 9, n. 28, p. 455-466, set./dez. ...
Direct determination of lead in human urine and serum samples by electrothermal...
Andrada,Daniel; Pinto,Frederico G.; Magalhães,Cristina Gonçalves; Nunes,Berta R.; Franco,Milton B.; Silva,José Bento Borba daThe object of the present study was the development of alternative methods for the direct determination of lead in undigested samples of human urine and serum by electrothermal atomic absorption spectrometry (ET AAS). Thus, some substances have been investigated to act as chemical modifiers. Volumes of 20 µL of diluted samples, 1 + 1, v/v for urine and 1 + 4, v/v for serum, with HNO3 1% v/v and 0.02% v/v of cet...
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