Resumen: Este estudio consiste en una revisión de alcance de acuerdo con los protocolos de Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR). Así, la investigación tuvo como objetivo evaluar la relación entre la perpetración de bullying y la depresión en niños y adolescentes en el contexto escolar. Se llevaron a cabo búsquedas en las bases de datos PsycInfo, Medline, PsycArticles y Scopus, con un límite temporal de los últimos 5 años. En total, se encontraron 315 publicaciones y, tras la selección, se incluyeron 26. Entre los resultados, se identificó una relación predictiva bidireccional y correlacional entre la perpetración y la depresión. Además, otras variables intra e interindividuales parecen estar relacionadas con este contexto. Se indica que las intervenciones antibullying para los perpetradores deben incluir estrategias para identificar y mitigar el sufrimiento psicológico, específicamente la depresión.

Abstract: This study represents a scoping review conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) protocol. The aim of this research was to explore the relationship between bullying perpetration and depression among children and adolescents in the school context. Searches were conducted in the PsycInfo, Medline, PsycArticles, and Scopus databases, with a temporal scope of the last five years. A total of 315 publications were initially identified, and after screening, 26 were included. Among the findings, a bidirectional and correlational predictive relationship between perpetration and depression was identified. Furthermore, other intra- and interindividual variables appear to be related to this context. It is suggested that antibullying interventions for perpetrators should include strategies for the identification and mitigation of psychological distress, specifically depression.

Resumo: O presente estudo consiste em uma revisão de escopo em consonância com o protocolo de Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR). Assim, a pesquisa objetivou conhecer a relação entre perpetração de bullying e depressão em crianças e adolescentes no contexto escolar. As pesquisas foram realizadas nas bases PsycInfo, Medline, PsycArticles e Scopus, com o recorte temporal dos últimos 5 anos. Ao todo foram encontradas 315 publicações e após triagem 26 foram incluídas. Dentre os resultados, identificou-se a relação preditora bidirecional e correlacional entre perpetração e depressão. Além disso, outras variáveis intra e interindividuais parecem estar relacionadas a esse contexto. Indica-se que intervenções antibullying para perpetradores incluam estratégias para identificação e mitigação de sofrimento psicológico, especificamente a depressão.

Abstract Numerical and experimental analysis of visible light communication (VLC) systems based on orthogonal chirp division multiplexing (OCDM) and orthogonal frequency division multiplexing (OFDM) are presented in this paper. Unlike most of the related publications, in this work we numerically compared OCDM and OFDM based VLC systems with the same equalization process, i.e., employing an one tap equalizer (OTE) in both systems. Simulation results in line-of-sight VLC channels show that both systems have the same performance when baseband multicarrier signals are used. The impact of the optical modulation index and the bias current of a previously characterized light-emitting diode were also evaluated. Nevertheless, the experimental demonstrations, in which bandpass signals were used due to the bandpass characteristic of the exploited setup, show that OFDM-based system outperforms the VLC links with OCDM signals, when the OTE equalizer is used in both systems. The performance of the OCDM-based system was improved by using a zero forcing frequency domain equalizer. (VLC (OCDM (OFDM paper publications process ie i e i.e. (OTE lineofsight line sight lightemitting emitting evaluated Nevertheless demonstrations setup OFDMbased OCDMbased i.e

RESUMOObjetivou-se indicar, neste trabalho, dentre alguns fungicidas químicos recomendados para o controle das doenças em feijoeiro, quais seriam mais adequados considerando-se os fungos micorrízicos arbusculares nativos como bioindicadores. O experimento foi conduzido em casa de vegetação sob condições controladas com sete tratamentos e cinco repetições, sendo água, azoxistrobina, piraclostrobina, tebuconazol + trifloxistrobina, trifloxistrobina, óxido cuproso e mancozebe. Os parâmetros avaliados foram colonização micorrízica, número de esporos viáveis, teores foliares de N, P e K, massa seca da raiz e da parte aérea e massa fresca de vagem. Azoxistrobina, tebuconazol + trifloxistrobina e trifloxistrobina não causaram diferença significativa na colonização de fungos micorrízicos arbusculares nativos na quantidade de esporos no solo nem nos teores de N, P e K foliar em relação ao controle. Piraclostrobina, óxido cuproso e mancozebe inibiram a colonização micorrízica em referência ao controle. Os fungicidas à base de azoxistrobina, tebuconazol + trifloxistrobina ou trifloxistrobina podem ser usados para o controle das principais doenças do feijoeiro sem inibir a atividade dos fungos micorrízicos arbusculares nativos.

ABSTRACTThe aim of this study was to point out which chemical fungicides, from the usually recommended ones, would be more suitable to control common beans diseases, considering indigenous arbuscular mycorrhizal fungi (AMF) as bio-indicator. The experiment was conducted under controlled greenhouse conditions and was comprised by seven treatments and five plots of repetition each one. The treatments were: water, azoxystrobin, pyraclostrobin, tebuconazol + trifloxystrobin, trifloxystrobin, cuprous oxide and mancozebe. AMF root colonization index, amount of viable spore, leaf NPK content, shoot and root dry weight and pod fresh weight were assessed. Azoxystrobin, tebuconazol + trifloxystrobin and trifloxystrobin did not affect significantly the AMF root colonization, amount of spore and leaf NPK content, when compared with control. Pyraclostrobin, cuprous oxide and mancozeb inhibited the AMF root colonization. Using the azoxystrobin, tebuconazol + trifloxystrobin and trifloxystrobin are the best options to control the common bean main diseases without inhibiting AMF activities and its benefits.

A composição de taninos em cascas de espécies de barbatimão, Stryphnodendron adstringens (Mart.) Cov. and S. polyphyllum (Mart.), foi analisada mensalmente durante um ano. Os resultados foram correlacionados com as condições climáticas do período de coleta (precipitação, umidade e temperatura média) através de métodos quimiométricos. Análise de componentes principais dos dados mostrou uma tendência de maior produção de taninos na estação quente e chuvosa, sugerindo que os fatores ambientais podem afetar os teores de taninos nestas espécies.

The contents of tannins in the barks of barbatimão species, Stryphnodendron adstringens (Mart.) Cov. and S. polyphyllum (Mart.), were analysed monthly during one year. Results were correlated with climate conditions (rainfall, humidity and mean temperature) by chemometric methods. Principal component analysis of the data showed a tendency for higher production of tannins in the warm and wet season, suggesting that environmental factors can affect the levels of tannins in those plants.