Browsing by Issue Date, starting with "2005-07"
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- Bullies, victims and bully-victims: do they have a different health profile?Publication . Seixas, Sónia Raquel Pereira Malta Marruaz; Coelho, Joaquim PintoBullying affects an important number of students in school today. A substantial body of international research supports this concern relating bully/victim problems and health. Following the concept of health defended by the World Health Organization (WHO), that focus on physical, mental and social aspects of subjects, in this paper we will present some results of a research concerning the relation between involvement in bullying and some health behaviours. Data was collected from a random sample, using the Health Behaviours in School-aged Children (HBSC) used by the WHO to assess, among others, physical symptoms, psychological symptoms and substance use, the Harter Self-Perception Profile for Adolescents, a Peer Nomination Inventory and a Sociometric Questionnaire. A total of 581 portuguese adolescents aged 12 to 17 years, who attended several middle public schools in the region of Lisbon. The students were defined as bullies, victims, bully-victims and not involved on the basis of the Peer nomination Inventory. Results show a connection between these four groups and some health behaviours, providing a distinctive profile for each one.
- A new dihydroxysterol from the marine phytoplankton Diacronema sp.Publication . Rauter, A. P.; Filipe, M.M.; Prata, C.; Noronha, J.P.; Sampayo, M.A.M.; Justino, Jorge; Bermejo, J.Diacronema sp. was cultured and its sterols were separated by column chromatography on silica gel. The new sterol 24-ethyl-4α-methyl-cholestane-3,20-diol (1) was characterised by NMR and MS spectrometry, as well as (22E)-24-ethyl-4α-methyl-5α-cholest-22-en-3β-ol (2) and β-sitosterol, the major components of the sterol fractions. Neither the biosynthetic origin of the new dihydroxysterol nor its role in the biochemistry of Diacronema is known.
- School adjustment in bullies and bullied adolescentesPublication . Seixas, Sónia Raquel Pereira Malta MarruazBullying is not a new phenomenon and across countries is receiving increased attention. What is new is the growing awareness that bullying as serious consequences for both students, their peers and schools. The purpose of this study was to examine the relationship between different levels of school adjustment and bullying. Using stratified random sampling, a sample of 581 students aged 12 to 17 years from 11 schools of Lisbon was drawn. Data was collected using the Health Behaviours in School-Aged Children (HBSC) used by the World Health Organization (WHO) to asses, among others, peer acceptance, peer aggression, friendship, and feelings of safety, pleasure and boredom at school; the Harter Self-Perception Profile for Adolescents; a Peer Nomination Inventory to identify bullies, victims, bully-victims and not involved; and a Sociometric Questionnaire to asses student’s social status (popular, average, neglected, rejected and controversial). Results show that the impact of these different factores varied within subgroups of bullies, victims and bully-victims.