774 resultados para Social interactions


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This study consists of a study on the presence of relationship between social capital and solidarity groups to endorse the Center for Support to Small Businesses - CEAPE - PI, the capital was measured by confidence levels and associations, considering trust as the expectations want, and learned associations between people and how the interactions among members within a group and between groups. The central research question seeks to identify whether there are linkages between the levels of social capital and the profile of members of the solidarity group CEAPE-PI. The overall objective is to analyze the level of social capital and whether these vary with the change in the profile of the solidarity group members. The method adopted in perspective cross-examined the level of social capital found in 300 of solidarity group members, collected through a survey research related to the profile of the solidarity group members, obtained with the CEAPEPI. The data show that micro-credit groups have relatively high levels for most variables, but to relate to the profile of microcredit results demonstrate the interesting points of analysis

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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We investigated the association of eye color with the dominant-subordinate relationship in the fish Nile tilapia, Oreochromis niloticus. Eye color pattern was also examined in relation to the intensity of attacks. We paired 20 size-matched fish (intruder: 73.69 ± 11.49 g; resident: 75.42 ± 8.83 g) and evaluated eye color and fights. These fish were isolated in individual aquaria for 10 days and then their eye color was measured 5 min before pairing (basal values). Twenty minutes after pairing, eye color and fights were quantified for 10 min. Clear establishment of social hierarchy was observed in 7 of 10 pairs of fish. Number of attacks ranged from 1 to 168 among pairs. The quartile was calculated for these data and the pairs were then divided into two classes: low-attack (1 to 111 attacks - 2 lower quartiles) or high-attack (112 to 168 attacks - 2 higher quartiles). Dominance decreased the eye-darkening patterns of the fish after pairing, while subordinance increased darkening compared to dominance. Subordinate fish in low-attack confrontations presented a darker eye compared to dominant fish and to the basal condition. We also observed a paler eye pattern in dominants that shared low-attack interactions after pairing compared to the subordinates and within the group. However, we found no differences in the darkening pattern between dominants and subordinates from the high-attack groups. We conclude that eye color is associated with social rank in this species. Moreover, the association between eye color and social rank in the low-attack pairs may function to reduce aggression.

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Social conflict between mice produces analgesia in the attacked mouse. Both the magnitude and type (opioid or nonopioid) of this analgesia have been related to attack intensity and strain of mouse. In the present study low intensity social conflict (7 bites) did not produce analgesia, whereas high intensity - 30 and 60 bites interactions produced, respectively, short-lasting (5 min) and very short-lasting (1 min) analgesia in Swiss albino mice, when compared with nonaggressive interaction (0 bite). The 30 bites aggressive interaction induced analgesia (AIIA) was not affected by IP injection of either naloxone (5.0 and 7.5 mg/kg) or diazepam (0.5, 1.0, 2.0 and 4.0 mg/kg). However, this attack-induced analgesia was reduced after IP administration of the 5-HT1A agonists, gepirone (0.3 and 3.0 mg/kg) and BAY R 1531 (0.01 mg/kg). These results indicate that the analgesia induced by 30 bites social conflict in Swiss albino mice does not involve opioid and GABA-benzodiazepine (GABA-BZD) mechanisms. In addition, they suggest that high-intensity social conflict activates serotonergic pain modulatory systems that act through 5-HT1A receptors. Copyright (C) 1997 Elsevier B.V.

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The genus Mischocyttarus comprises 245 species of neotropical basal eusocial wasps. They form small colonies (rarely more than few tens of individuals); castes are morphologically undifferentiated and determined behaviorally by agonistic interactions. The aim of this study was to verify the effects of the experimental disruption of social hierarchy on foraging activity of Mischocyttarus cerberus styx. We observed six colonies in postemergence phase and recorded data on the foraging activity under two experimental conditions: (1) removal of lower-ranked females and (2) removal of higher ranked females, except the queen. Our results showed that the removal of higher-ranked females had higher effect on the number of foraging trips of M. cerberus styx than the removal of lower-ranked females (the number of foraging trips/hour decreased by 66.4 and 32.7, resp.). Such results are likely due to the social organization of this species and the presence of a distinct class of females, which in this study were regarded as intermediates. Our data also showed that, irrespective of the hierarchical status of the females, the removal of two or three individuals affected significantly the number of foraging trips in this species. Copyright 2011 Vanderlei Conceio Costa Filho et al.

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Peptides isolated from animal venoms have shown the ability to regulate pancreatic beta cell function. Characterization of wasp venoms is important, since some components of these venoms present large molecular variability, and potential interactions with different signal transduction pathways. For example, the well studied mastoparan peptides interact with a diversity of cell types and cellular components and stimulate insulin secretion via the inhibition of ATP dependent K + (K ATP) channels, increasing intracellular Ca 2+ concentration. In this study, the insulin secretion of isolated pancreatic islets from adult Swiss mice was evaluated in the presence of synthetic Agelaia MP-I (AMP-I) peptide, and some mechanisms of action of this peptide on endocrine pancreatic function were characterized. AMP-I was manually synthesized using the Fmoc strategy, purified by RP-HPLC and analyzed using ESI-IT-TOF mass spectrometry. Isolated islets were incubated at increasing glucose concentrations (2.8, 11.1 and 22.2 mM) without (Control group: CTL) or with 10 μM AMP-I (AMP-I group). AMP-I increased insulin release at all tested glucose concentrations, when compared with CTL (P < 0.05). Since molecular analysis showed a potential role of the peptide interaction with ionic channels, insulin secretion was also analyzed in the presence of 250 μM diazoxide, a K ATP channel opener and 10 μM nifedipine, a Ca 2+ channel blocker. These drugs abolished insulin secretion in the CTL group in the presence of 2.8 and 11.1 mM glucose, whereas AMP-I also enhanced insulin secretory capacity, under these glucose conditions, when incubated with diazoxide and nifedipine. In conclusion, AMP-I increased beta cell secretion without interfering in K ATP and L-type Ca 2+ channel function, suggesting a different mechanism for this peptide, possibly by G protein interaction, due to the structural similarity of this peptide with Mastoparan-X, as obtained by modeling. © 2012 Elsevier Ltd.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Psicologia do Desenvolvimento e Aprendizagem - FC

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Este estudo sobre o processo de construção de políticas de inclusão social no projeto Escola Cabana e os consensos e tensionamentos entre os segmentos sociais e o poder público municipal procurou investigar e refletir se esse projeto possibilitou (ou não) a inclusão e participação dos segmentos sociais (Movimento das Mulheres, Homossexuais, Negros e dos PNEEs), bem como da contemplação de suas reivindicações e interesses no processo de formulação e elaboração de políticas públicas, a partir das análises de documentos oficiais e das falas de integrantes dos movimentos sociais e de dirigentes da educação municipal, no período de 1997 a 2000 e 2001 a 2004. Ele abrange uma discussão sobre as perspectivas de compreensão sobre exclusão e inclusão social, espaços públicos democratizados, participação popular e processos identitários, tendo como pano de fundo a abordagem do período de redemocratização do Brasil. Este trabalho contemplou ainda a relação entre os documentos produzidos pelo governo municipal sobre o projeto da Escola Cabana e os depoimentos dos entrevistados, estabelecendo uma série de variáveis que discriminam as motivações dos sujeitos da sociedade para o envolvimento com os segmentos sociais, bem como dos gestores do poder público com as entidades da sociedade civil, durante a construção do referido projeto. Verifica-se, a partir da pesquisa, que as políticas públicas materializadas em conseqüência das interações entre a administração municipal e os movimentos, mostraram articulações dos mais diferentes vieses, com evidências de bases consensuais, mas com intensos conflitos, tensionamentos e impasses. A discussão, aqui apresentada, enfatiza a relevância dessa experiência tanto para Belém quanto para outros municípios como oportunidade de viabilização, participação e utilização de espaços públicos por setores populares. Revela, ainda, que, apesar da possibilidade de ter criado alternativas, de caráter inovador, às propostas existentes que visam à eliminação de contextos de exclusão social e à configuração de processos de identidade, o projeto ficou comprometido pela inexperiência gestionária de alguns dirigentes, pela sua apropriação parcial por determinados setores sociais e pela sua informalidade legal.