Abstract Microbial biomass is considered a renewable and environmentally friendly resource. Thus, the research conducted a kinetic study and thermodynamic equilibrium modeling of the cobalt (Co) and manganese (Mn) bioadsorption process using the Rhodococcus opacus (RO) strain as a biosorbent. The inactive biomass subjected to 0.1 M NaOH pretreatment was brought into contact with synthetic solutions of Co and Mn. The experimental data for the Co(II) and Mn(II) bioadsorption process were fit to the Langmuir model with kads of 0.65 and 0.11 L.mg-1, respectively. A better statistical fit was also obtained for the pseudo-second order kinetic model (R2Co(II) = 0.994 and R2Mn(II) = 0.995), with 72.3% Co(II) and 80% Mn(II) removals during the first 10 min. In addition, a higher affinity of RO for the Co(II) ion was observed, with maximum uptake values of 13.42 mg.g-1; however, a higher adsorption rate was observed for Mn(II) ion (k = 0.21 g.mg-1.min-1 at 318 K). The bioadsorption process was spontaneous and dependent on temperature, being endothermic and irreversible for the Co(II) ion (∆H = 2951.91 J.mol-1) and exothermic and reversible for the Mn(II) ion (∆H = -2974.8 J.mol-1). The kinetic and thermodynamic equilibrium modeling allowed to identify the main mechanisms involved in the biosorption process of both metals.

Resumo Violência por Parceiro Íntimo consiste em importante causa de morbimortalidade de mulheres. Embora não existam estatísticas oficiais, dados apontam para elevada prevalência mundial. Este estudo objetivou estimar a prevalência e os fatores associados à violência por parceiro íntimo em mulheres de uma comunidade em Recife/Pernambuco. Realizou-se estudo de corte transversal, incluindo 245 mulheres, na faixa etária de 15 a 49 anos. Utilizou-se questionário com variáveis sociodemográficas, acrescido dos instrumentos WHO VAW STUDY e Self Report Questionnaire (SRQ-20). As participantes assinaram Termo de Consentimento Livre e Esclarecido. A prevalência de violência por parceiro íntimo foi, por tipo de violência sofrida: emocional, 52,7%; física, 46,1%; e sexual, 13,6%. A análise bivariada evidenciou associação entre ter sofrido violência com não ter companheiro (p = 0,001) e uso de drogas (p ≤ 0,001). Na Análise Multivariada, as variáveis encontradas fortemente associadas ao desfecho: relação sexual por medo (OR 5,58); humor depressivo-ansioso (OR 2,69); uso de drogas (OR 2,57). Alta prevalência de violência por parceiro íntimo nessa comunidade, especialmente a violência emocional, destaca-se como relevante achado, indicando a necessidade de cuidados na prevenção e saúde geral dessa população.

Abstract Intimate partner violence is an important cause of morbidity and mortality among women. Although there are no official statistics, data reveal a high prevalence worldwide. This study aimed to estimate the prevalence and factors associated with intimate partner violence among women in a community in Recife, Pernambuco. A cross-sectional cohort study was conducted with 245 women in the 15 to 49-year age bracket. A questionnaire with sociodemographic variables was used, together with the WHO Violence Against Women (VAW) study tools and the Self-Reporting Questionnaire (SRQ-20). The participants all signed an informed consent form. The prevalence of intimate partner violence was classified by type of violence: emotional - 52.7%; physical - 46.1 %; and sexual - 13.6%. Bivariate analysis revealed an association between experiencing violence with not having a partner (p = 0.001) and drug use (p ≤ 0.001). In multivariate analysis, the variables were strongly associated with the outcome: sexual intercourse for fear (OR 5.58); depressive-anxious mood (OR 2.69); drug use (OR 2.57). A high prevalence of intimate partner violence in the community, especially emotional violence, emerges as an important finding, indicating the need for care in prevention and the overall health of this population.

Resumo Violência por Parceiro Íntimo consiste em importante causa de morbimortalidade de mulheres. Embora não existam estatísticas oficiais, dados apontam para elevada prevalência mundial. Este estudo objetivou estimar a prevalência e os fatores associados à violência por parceiro íntimo em mulheres de uma comunidade em Recife/Pernambuco. Realizou-se estudo de corte transversal, incluindo 245 mulheres, na faixa etária de 15 a 49 anos. Utilizou-se questionário com variáveis sociodemográficas, acrescido dos instrumentos WHO VAW STUDY e Self Report Questionnaire (SRQ-20). As participantes assinaram Termo de Consentimento Livre e Esclarecido. A prevalência de violência por parceiro íntimo foi, por tipo de violência sofrida: emocional, 52,7%; física, 46,1%; e sexual, 13,6%. A análise bivariada evidenciou associação entre ter sofrido violência com não ter companheiro (p = 0,001) e uso de drogas (p ≤ 0,001). Na Análise Multivariada, as variáveis encontradas fortemente associadas ao desfecho: relação sexual por medo (OR 5,58); humor depressivo-ansioso (OR 2,69); uso de drogas (OR 2,57). Alta prevalência de violência por parceiro íntimo nessa comunidade, especialmente a violência emocional, destaca-se como relevante achado, indicando a necessidade de cuidados na prevenção e saúde geral dessa população.

Abstract Intimate partner violence is an important cause of morbidity and mortality among women. Although there are no official statistics, data reveal a high prevalence worldwide. This study aimed to estimate the prevalence and factors associated with intimate partner violence among women in a community in Recife, Pernambuco. A cross-sectional cohort study was conducted with 245 women in the 15 to 49-year age bracket. A questionnaire with sociodemographic variables was used, together with the WHO Violence Against Women (VAW) study tools and the Self-Reporting Questionnaire (SRQ-20). The participants all signed an informed consent form. The prevalence of intimate partner violence was classified by type of violence: emotional - 52.7%; physical - 46.1 %; and sexual - 13.6%. Bivariate analysis revealed an association between experiencing violence with not having a partner (p = 0.001) and drug use (p ≤ 0.001). In multivariate analysis, the variables were strongly associated with the outcome: sexual intercourse for fear (OR 5.58); depressive-anxious mood (OR 2.69); drug use (OR 2.57). A high prevalence of intimate partner violence in the community, especially emotional violence, emerges as an important finding, indicating the need for care in prevention and the overall health of this population.