Serviço Nacional de Aprendizagem Comercial

Bovine semen cryopreservation is a fundamental procedure in animal reproduction. However, it is associated with the production of reactive oxygen species (ROS), which can cause significant damage to spermatozoa, leading to infertility and reduced sperm quality. In this context, using seminal diluents enriched with antioxidants presents a promising strategy for minimizing or even reversing these harmful effects. This study aimed to evaluate the effects of different concentrations of pequi (Caryocar coriaceum) esters as a supplement to bovine semen cryopreservation diluents. Forty-two ejaculates were collected from six bulls that had undergone an andrological examination and were deemed suitable. The samples were analyzed, diluted in Tris-egg yolk medium, supplemented with pequi esters (0.0, 0.5, 1.0, and 1.5 mL/L), packaged, and cryopreserved. The sperm parameters evaluated in the post-thaw semen included the thermoresistance, plasma membrane functionality, cleavage and blastocyst rates, and quantification of reduced glutathione and malondialdehyde. The results showed that the concentrations of 1.0 and 1.5 mL/L of pequi esters significantly reduced malondialdehyde levels in cryopreserved semen. However, no significant effects of pequi esters were observed on motility parameters, sperm functionality, cleavage and blastocyst rates, or on the quantification of reduced glutathione. Supplementation with pequi ester (1.0 and 1.5 mL/L) in the cryopreservation of bovine semen may be beneficial in minimizing lipid peroxidation effects, as evidenced by the reduction in malondialdehyde concentration after thawing.

Resumo A criopreservação de sêmen bovino é um procedimento fundamental na reprodução animal, mas está associada à produção de espécies reativas de oxigênio (ROS), que podem causar danos significativos aos espermatozoides. Esses danos estão relacionados à infertilidade e à diminuição da qualidade espermática. Nesse contexto, a utilização de diluidores seminais enriquecidos com antioxidantes representa uma estratégia promissora para minimizar ou até reverter esses efeitos deletérios. O objetivo desse estudo foi avaliar os efeitos de diferentes concentrações de ésteres de pequi (Caryocar coriaceum) como suplementação ao diluente de criopreservação de sêmen bovino. Foram coletados 42 ejaculados de seis touros, submetidos ao exame andrológico e considerados aptos. As amostras foram analisadas, diluídas em Tris-gema, suplementadas com ésteres de pequi (0; 0,5; 1,0 e 1,5 mL/L), envasadas e criopreservadas. Os parâmetros espermáticos avaliados no sêmen pós-descongelamento incluíram o teste de termorresistência fisiológica (TTR), a funcionalidade da membrana plasmática (HOST), as taxas de clivagem e blastocisto, bem como a quantificação de glutationa reduzida e de malondialdeído (MDA). Os resultados mostraram que as concentrações de 1,0 e 1,5 mL/L de ésteres de pequi reduziram significativamente a concentração de malondialdeído no sêmen criopreservado. No entanto, não foram observados efeitos significativos dos ésteres de pequi nos parâmetros de motilidade, funcionalidade espermática, taxas de clivagem e blastocisto, ou na quantificação da glutationa reduzida. Conclui-se que a suplementação com os ésteres de pequi (1,0 e 1,5 mL/L) na criopreservação de sêmen bovino pode ser benéfica para minimizar os efeitos da peroxidação lipídica dos espermatozoides, uma vez que houve redução na concentração de malondialdeído pós-descongelamento.

Resumo O objetivo do estudo é analisar como se organiza a rede de proteção à criança e adolescente vítimas de violência para garantir os seus direitos no contexto brasileiro. Realizou-se uma revisão de escopo pelos portais da Biblioteca Virtual em Saúde (BVS) e periódicos CAPES em todas as bases de dados indexadas. A pergunta foi como a rede de proteção se estrutura para garantir os direitos das crianças/adolescentes vítimas de violência? Das 67 publicações, elencou-se duas unidades temáticas: eixos organizacional e operacional da rede. Ações intersetoriais e multiprofissionais alicerçadas por política públicas descentralizadas repercutem nas características regionais e a identificação de lacunas contribui para a construção de uma rede fortalecida, ágil, eficaz na elaboração dos mecanismos de proteção e intervenção para garantia dos direitos fundamentais desta população. A desarticulação entre a formulação de políticas com a prática profissional reflete na rede de proteção muitas vezes revitimizando a criança ou adolescente. Valores éticos e morais são identificados como fatores que impactam na tomada de decisão ampliando as disparidades.

Forest fires produce toxic emissions that are detrimental to human health. Currently, the Pantanal, the largest continuous wetland in the world, is facing intense fires. This situation may contribute to increased hospital admissions for respiratory and cardiovascular diseases. To assess the additive effect between active fire hotspots and hospitalizations of residents in the Pantanal, a generalized linear model was used, incorporating geolocalized covariates such as air quality and climatic conditions. Our findings show a consistent worsening, when humans are exposed to 10 additional wildfire hotspots, the daily risk of admissions for respiratory diseases increases by 23,2% and 22,3% for cardiovascular diseases in 10-year analysis. These results can stimulate preventive measures to mitigate forest fires and also early preparation of the health system.

Apesar do crescente reconhecimento da importância da pesquisa sobre o comportamento do consumidor no âmbito do turismo, tanto por gestores, agentes do setor turístico quanto por órgãos governamentais, ainda persiste uma lacuna significativa na compreensão das motivações subjacentes aos turistas brasileiros. Este estudo tem como objetivo propor uma Escala de Motivação Turística (EMT) no contexto brasileiro. O processo investigativo incluiu uma revisão lexical meticulosa de estudos prévios, acessados por bases de dados nacionais e internacionais, a fim de estabelecer uma base sólida de motivações ligadas ao turismo. A EMT foi aplicada a uma amostra de 974 consumidores de turismo, sendo sujeita a procedimentos rígidos de validação, demonstrando sua integridade e confiabilidade com suas 15 variáveis distribuídas em três fatores distintos. A aplicação da EMT viabiliza a análise dos fatores impulsionadores do engajamento dos consumidores em atividades turísticas e na escolha de destinos, permitindo uma investigação detalhada das discrepâncias e identificação dos estímulos mais relevantes para o destino em foco.

Resumo Introdução: No contexto das práticas e políticas de saúde para o enfretamento da infeção pelo HIV, tem-se a população privada de liberdade como prioritária no delineamento de ações e estratégias que qualifiquem a assistência em saúde. Objetivo: Descrever o perfil das pessoas que vivem com HIV em unidades prisionais. Método: Estudo descritivo, realizado em seis unidades prisionais da região de Ribeirão Preto em 2015. A população do estudo compreendeu 85 sujeitos com HIV privados de liberdade. Os dados foram coletados por meio de um questionário estruturado e analisados utilizando estatística descritiva. Resultados: Dos entrevistados, 50,6% eram solteiros, 31,8% casados/união estável, 45,9% pardos, 70,6% tinham escolaridade entre o fundamental I e II, 44,7% afirmaram relação sexual no último ano e 89,4% referiram uso de droga. Quanto ao HIV, 50,6% obtiveram o diagnóstico no sistema prisional, 84,7% realizavam acompanhamento médico, 78,8% usavam terapia antirretroviral (TARV). Quanto às queixas de saúde, 65,9% descreveram ansiedade, agitação, irritabilidade, inquietação; 63,5%, tristeza e desânimo; e 51,8%, fraqueza, cansaço e mal-estar. Conclusão: Houve predomínio de indivíduos com características semelhantes as da população carcerária brasileira. Estiveram presentes condições que potencializam a instabilidade e o agravamento do HIV, sendo que a maioria realizava acompanhamento médico especializado.

This research aimed to develop a management model to increase the capacity of integrating processes in the human resources area in a large Brazilian service organization. The research used a qualitative and quantitative approach to analyze data from the organization’s value chain and to evaluate the consistency of integrations and artifacts mapped in light of stakeholder requirements under the theory of constraints. Among the main results, two scales were developed to measure organizational consistency: a) validation of the level of updating of artifacts; and, b) diagnosis of technological adherence. With the model, all 16 organizational subsystems of the context, 142 artifacts and 666 integrations were mapped. The applied model resulted in significant global gains in the processes’ integration of the researched value chain. Keywords: integration; process; artifacts; requirements; validation.

This research aimed to develop a management model to increase the capacity of integrating processes in the human resources area in a large Brazilian service organization. The research used a qualitative and quantitative approach to analyze data from the organization’s value chain and to evaluate the consistency of integrations and artifacts mapped in light of stakeholder requirements under the theory of constraints. Among the main results, two scales were developed to measure organizational consistency: a) validation of the level of updating of artifacts; and, b) diagnosis of technological adherence. With the model, all 16 organizational subsystems of the context, 142 artifacts and 666 integrations were mapped. The applied model resulted in significant global gains in the processes’ integration of the researched value chain. Keywords: integration; process; artifacts; requirements; validation.

Guava is one of the fruit trees with good economic returns. The aim with this study was to evaluate the production and fruit quality of five guava cultivars (Tailandesa, Cortibel SLG, Cortibel RM, Cortibel RG, and Paluma) submitted to staggered and continuous production pruning, in the bioclimatic conditions of Southwest Mato Grosso do Sul. The experiment was conducted during the year 2019/2020/2021, performing two production pruning (PP1 and PP2). In each production pruning, eight fructification pruning were carried out, with an interval of 30 days, namely: in PP1 (October/2019, November/2019, December/2019, January/2020, February/2020, March/2020, April/2020 and May/2020); and in PP2 (June/2020, July/2020, August/2020, September/2020, October/2020, November/2020, December/2020 and January/2021). Statistical analyzes were performed within each production period, not comparing the effects of these. The means were compared using the Tukey test for cultivars and the Scott-Knott test for staggered pruning. Higher yield values were observed in PP1 of the Tailandesa and Cortibel RM cultivar, in the pruning of October/2019 and January/2020. In PP2, the productivity of all cultivars was higher than in PP1, especially Cortibel RM and Tailandesa, with higher yields and lower amounts of non-marketable fruits in the pruning of November and December/2020 and January/2021. The fruits were classified as oblong and with quality for commercialization. Continuous staggered pruning, and Tailandesa and Cortibel RM cultivars are promising for cultivation in Southwest MS.

In order to establish protocols that can contribute to the propagation of medicinal plants, this study evaluated the effect of hydropriming and substrates on the emergence and production of Calendula officinalis L. seedlings. Seeds were submitted or not to hydropriming for 24 hours, and subsequent sowing in four substrates: S1) 100% Dystroferric Red Latosol - DRL, S2) DRL + coarse sand (1:1 v/v), S3) DRL + Tropstrato® commercial substrate (1:1 v/v) and S4) 100% Tropstrato®, and kept in greenhouse with 50% shading. Higher emergence percentage in substrates with the presence of DRL was observed. Seed hydropriming impaired seedling emergence, but contributed to root growth, biomass production and seedling quality. The 100% Tropstrato® substrate favored higher dry mass production and seedling quality. Positive linear correlation (≥ 0.70) was observed between shoot and root growth characteristics with biomass production and Dickson’s quality index. Principal component analysis explained 78.95% of the experimental variance, excluding the first count and the shoot/root ratio with low representativeness. In the cluster analysis of Euclidean distances, seedlings with the greatest similarity were those produced with 100% DRL and DRL + Tropstrato® with and without hydropriming, respectively. Dystroferric Red Latosol is recommended pure or combined with Tropstrato® for the production of C. officinalis L seedlings, and the hydropriming impaired seedling emergence characteristics.

Practical wisdom, an essential component of leadership, has been approached mainly from a theoretical perspective. While there are barely any empirical studies on leaders’ practical wisdom, quantitative ones are even rarer, and no valid measure of a leader’s practical wisdom exists. Thus, our understanding of whether and how wise leaders influence their followers is limited. Inspired by Thomas Aquinas’ ideas on practical wisdom, we operationalize it as a tridimensional capacity of inquiring, judging, and acting in an emotionally regulated way, and develop and validate a corresponding measure of leader-expressed practical wisdom. To support our operationalization, we test how leader-expressed practical wisdom predicts employees’ speaking up behaviors via their psychological safety. Our rationale is that to make better decisions, wise leaders are receptive to employees’ views that address matters of concern and challenge the status quo with the intention of improving the situation – such a receptiveness being enabled by fostering employees’ psychological safety. Through a two-wave field study, a three-wave field study, and a vignette-based experiment carried out in three countries we obtain empirical support for that three-dimensional construct and show that leader-expressed practical wisdom predicts employees’ speaking up behaviors via their psychological safety.

The objective of this study was to evaluate the yield, morphometric traits, and the primal and sub primal cuts of Santa Inês lamb carcasses and their crossbreds with Dorper rams finished in feedlot. Thirty uncastrated lambs of the following genetic groups were used: 10 Santa Inês, 10 ½Dorper + ½Santa Inês and 10 –Dorper + ¼Santa Inês at 115 days of age averaging 20kg of live body weight. The experiment period was 53 days, preceded by seven days for adaptation. The carcasses of the Dorper crossbred lambs had higher carcass weight and yield, as well as larger thorax and rump width, and larger thorax, rump, and leg perimeter. The carcasses of the Dorper crossbred lambs also showed greater weight for all primal and sub primal carcass cuts, except for the neck. The lamb carcasses of Santa Inês had higher yields of shoulder and neck primal cuts and the carcasses of Dorper crossbred lambs showed higher loin yield. The carcasses of the crossbred lambs had higher yield of sirloin, rump steak, and frenched rack cap. The genetic group influences the linear and circular measures of the lamb carcasses and the weight of primal and sub primal cuts. Keywords: crossing; finishing; genotype; morphometry; sheep; yield

Plum is a temperate fruit tree and thus shows abundant vegetative bud percentage and flowering following extended periods of low winter temperatures. When adequate periods of low temperatures do not occur, it is necessary to apply products to stimulate bud dormancy break and uniform leaf and flower appearance. This application is more frequently needed when plum trees are grown in the tropics. The objective of this study was to evaluate alternative products for breaking dormancy in ‘Reubennel’ plum in subtropical regions. The experiment was conducted at a site located at 22°22’S, 43°77’W and 1,173 m altitude, with a Cwa climate type. The following treatments were applied to eight-year-old ‘Reubennel’ plum trees in the 2018 and 2019 production cycles: 1) a negative standard composed of only water (control), a positive standard composed of 2) 1.5% hydrogen cyanamide (HC) (Dormex ® commercial product) plus 4.5% mineral oil, 3) Erger G ® organomineral fertilizer supplemented with 3% calcium nitrate, 4) 5% potassium nitrate and 5) 0.3% copper sulfate. Two liters of the treatment solutions were applied per plant with a sprayer. The effect of the tested products on vegetative bud percentage and flowering capacity, production cycle reduction and production and quality of ‘Reubennel’ plums was evaluated. It was concluded that the chemicals used to break dormancy affected only the phenology of plum trees in this subtropical region and that the application of copper sulfate can be used to break dormancy in these trees.

The symbiosis between arbuscular mycorrhizal fungi (AMF) and fruit tree plants is a sustainable strategy for producing seedlings. However, information for Dipteryx alata Vogel., a native species, is still scarce. Thus, this study aimed to identify the most promising AMF inoculum for producing D. alata seedlings and their effects on growth. Seedlings were inoculated with Clareoideoglomus etunicatum, Gigaspora albida, Gigaspora margarita, a mixture of these three species, and an uninoculated control. Height, diameter, and chlorophyll index were evaluated at 30, 60, 90, 120, 150, and 180 days after seedling transplanting, while biomass production, quality index, dependence, and mycorrhizal efficiency were evaluated at 180 days. Greater diameter and height values were observed for D. alata seedlings at 180 days and inoculated with G. albida, G. margarita, and the mixture. AMF of the genus Gigaspora positively contributed to biomass production and seedling quality. D. alata seedlings show high mycorrhizal dependence on G. albida and G. margarita inoculum, which had good mycorrhizal efficiency. AMF, especially those of the genus Gigaspora, favor the production of high-quality D. alata seedlings.

Introdução: Os métodos e os recursos didáticos de ensino influenciam no processo de aprendizagem. Objetivo: Elaborar e aplicar um plano de ensino em cursos de Boas Práticas de Manipulação (BPM) destinados aos serviços de alimentação, adotando em seu projeto pedagógico metodologias ativas. Método: O delineamento experimental foi do tipo “antesdepois”, utilizando como indicadores de aprendizagem o conhecimento teórico e as atitudes adotadas em BPM. Para avaliar o conhecimento teórico, foi aplicado um questionário (dez questões) e, para avaliar as atitudes dos alunos, foi simulada uma situação-problema na qual uma manipuladora de alimentos executava procedimentos e cada participante deveria identificar o que estava certo ou errado (14 atitudes). Resultados: Aplicada em cursos realizados pelo Senac/RS, a amostra contou com cinco turmas totalizando 114 alunos, com graus de escolaridade fundamental (n = 22 – 19,3%), médio (n = 53 – 46,5%) e superior (n = 39 – 34,2%). Verificou-se um aumento estatisticamente significativo na aquisição de conhecimentos teóricos com acerto médio de 7,13 nas questões antes do curso e de 8,94 depois. A mediana foi 8 com quadrantes inferior (Qu.in) 6 e superior (Qu.su) 8 antes, e mediana 9 com Qu.in 8 e Qu.su 10 depois do curso. Igualmente significativo foi o aumento no reconhecimento e na adoção de atitudes adequadas em BPM com média de 4,36 antes, e de 7,56 depois do curso. A mediana das atitudes foi 5 com Qu.in 2 e Qu.su 7 antes, e 8 com Qu.in 7 e Qu.su 11 depois do curso. Conclusões: Em todos os graus de escolaridade ocorreu aumento do número de acertos depois do curso, mas quanto maior o grau maior o número de acertos no questionário e nas atitudes corretamente identificadas na situação-problema.

This study is about the relation among media culture and school territory, problematizing the role of the teacher and the school in the mediation of contents mediatically consumed by the students. The investigation debates the understandings and skills that the teachers possess in relation to the didactics turned to Mediatic-Visual Literacy inside their specific school contexts. In methodological terms, has a quantitative-qualitative approach, which central strategy is the action-research (THIOLLENT, 1986). To achieve that, are theoretically-methodologically articulated some concepts, such as: Human Rights (MARTÍN-BARBERO, 2011); Visual Literacy (KELLNER, 1995) and Media Education (BACCEGA, 2001). These notions oriented the empiric research developed with a teachers’ group from the municipal network of teaching in a town of Rio Grande do Sul/Brazil. The work comes from an investigative process of introductory poll, followed by a focal approach. Among the results of the research-action, it was verified with the teachers the absence of a support for the work with media images mechanism and systems, generating insecurities. However, in the intervention accomplished among a small number of teachers, it was possible to give another meaning to some of these fears, presenting other perspectives and offering new thoughts. There was, yet, the joint construction of knowledges, making other looks possible for the critical consumption of media manifestations and the importance of the conscious use of technologies. It’s particularly highlighted the creation of the Guide to Mediatic-Visual Literacy, a document oriented on the study and in the use of photographic language at school, believing that, as this research, will be possible to give opportunity for new ways of thinking and planning the processes of teaching-learning, also making possible to the educators and students the construction of knowledge that enable a more conscious and critic consumption of communicational artifacts, as well as more autonomy and responsibility to use the media technologies as a way of democratic fight and citizen expression.

RESUMO: O estudo versa sobre a relação entre a cultura da mídia e o território escolar, colocando em debate as compreensões e aptidões que os/as docentes possuem em relação às didáticas voltadas para a Alfabetização Midiática-Visual dentro de seus contextos escolares de atuação. Em termos metodológicos, trata-se de uma abordagem quanti-qualitativa, que tem como estratégia central a pesquisa-ação (THIOLLENT, 1986). Para isso, articula-se teórico-metodologicamente através de alguns conceitos, tais como: Direitos Humanos (MARTIN-BARBERO, 2011), Alfabetismo Visual (KELLNER, 1995) e Educação Midiática (BACCEGA, 2001). Noções essas que nortearam a pesquisa empírica desenvolvida com um grupo de docentes da rede municipal de uma cidade no Rio Grande do Sul/Brasil. O trabalho é oriundo de um processo investigativo de sondagem introdutória, que seguiu com uma abordagem focal. Entre os resultados da pesquisa-ação, verificou-se nos/as professores/as uma ausência de amparo no que se refere ao trabalho com mecanismos e sistemas de imagens midiáticas, ocasionando inseguranças. Contudo, na intervenção realizada junto a um número reduzido de pedagogos/as, foi possível ressignificar alguns desses temores, apresentando outras perspectivas e proporcionando reflexões. Houve, ainda, a construção conjunta de saberes, viabilizando outros olhares quanto ao consumo crítico das manifestações midiáticas e à importância do uso consciente das tecnologias. Destaca-se particularmente a criação do Guia da Alfabetização Midiática-Visual, documento pautado no estudo e no uso da linguagem fotográfica na escola, o qual acredita-se, assim como esta pesquisa, que oportunize novas formas de se pensar e planejar os processos de ensino-aprendizagem.