Search

BackgroundInternet and mobile phones, widely available in Brazil, could be used to disseminate information about HIV prevention and to recruit gay, bisexual, and other cisgender men who have sex with men (MSM) to HIV prevention services. Data evaluating the characteristics of MSM recruited through different web-based strategies and estimating their cost and yield in the country are not available. ObjectiveWe aimed to describe a web-based recruitment cascade, compare the characteristics of MSM recruited to a large HIV prevention service in Rio de Janeiro according to web-based venues, and estimate the cost per participant for each strategy. MethodsWe promoted advertisements on geosocial networking (GSN) apps (Hornet and Grindr) and social media (Facebook and Instagram) from March 2018 to October 2019. The advertisements invited viewers to contact a peer educator to schedule a visit at the HIV prevention service. Performance of web-based recruitment cascade was based on how many MSM (1) were reached by the advertisement, (2) contacted the peer educator, and (3) attended the service. We used chi-square tests to compare MSM recruited through GSN apps and social media. The estimated advertisement cost to recruit a participant was calculated by dividing total advertisement costs by number of participants who attended the service or initiated preexposure prophylaxis (PrEP). ResultsAdvertisement reached 1,477,344 individuals; 1270 MSM contacted the peer educator (86 contacts per 100,000 views)—564 (44.4%), 401 (31.6%) and 305 (24.0%)—through social media, Grindr, and Hornet. Among the 1270 individuals who contacted the peer educator, 36.3% (n=461) attended the service with similar proportion for each web-based strategy (social media: 203/564, 36.0%; Grindr: 152/401, 37.9%; and Hornet: 107/305, 35.1%). MSM recruited through GSN apps were older (mean age 30 years vs 26 years; P

Diversas pesquisas relatam estudos da interação genótipo x ambiente na cultura da soja para a produção de grãos, sendo poucos os trabalhos, do mesmo tema, quanto a produtividade de oléo dos cultivares. Assim, o trabalho teve como objetivo avaliar a adaptabilidade e estabilidade de onze cultivares de soja em cinco ambientes no Estado de Tocantins, quanto a produtividade de oléo nos grãos. Os ensaios foram realizados nas safras 2008/09 e 2009/10, nos municípios de Palmas e Gurupi-TO. O delineamento experimental utilizado em cada ensaio foi de blocos ao acaso com quatro repetições. A determinação do percentual de óleo foi realizada através do método Soxhlet, e após esta, foi determinada a produtividade de óleo (kg ha-1). Na análise de estabilidade e adaptabilidade dos genótipos, foram utilizadas as metodologias de Eberhart & Russell (1966) e de Lin & Binns (1988) modificado por Carneiro (1998). A análise de variância conjunta indicou interação significativa entre cultivar e ambiente. Os cultivares adaptados aos ambientes favoráveis e desfavoráveis, quanto a produtividade de óleo nos grãos, foram: BR/ENGOPA314, P98Y51 e M8766RR.