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Polymeric materials based on natural fibers and minerals are currently being researched and their development is still in its infancy but is expected to increase in the coming years (being nowadays a hot topic). Their main advantage is that they make it possible to use waste and by-products of agricultural, forestry, and mineral origin to generate materials for Additive Manufacturing. Since their use reduces the need for other synthetic polymers derived from petroleum and other non-natural fibers that generate a high environmental impact, this type of material is a sustainable, environmentally friendly, biodegradable solution that can be integrated into the value chain of certain industries and, finally, favors the circular economy. This study presents a bibliometric analysis, meta-analysis, and systematic literature review focusing on plant-based fibers and minerals in biocomposites from a holistic perspective. To learn about the potential of these new materials at an industrial level and to learn about the benefits they can have for society, the strengths, weaknesses, opportunities, and threats have been evaluated. The results strongly suggest that these materials will undergo intensive development in the upcoming years, with a substantial increase in their integration across industries.

RESUMO: O debate sobre o corpo tem sido constante em uma série de campos do conhecimento, principalmente na Educação Física. No Brasil, esse debate foi intensificado a partir dos anos de 1980, momento em que o campo da Educação Física começa a se aproximar de modo sistemático das ciências humanas. Nesse âmbito, o Colégio Brasileiro de Ciências do Esporte (CBCE) e o seu principal evento, o Congresso Brasileiro de Ciências do Esporte (CONBRACE), apresentaram as pesquisas dos seus participantes por meio dos Grupos de Trabalhos Temáticos (GTTs) a partir de 1997. Portanto, o objetivo desta pesquisa é analisar as concepções de corpo presentes nos anais do CONBRACE, no período de 1997 a 2017. Esta pesquisa é quanti-qualitativa por meio de análise documental, com características bibliométricas. Para compor a análise dos dados, a busca e a seleção dos textos se deram a partir da presença da palavra “corpo” no título do texto, no resumo ou nas palavras-chave das comunicações orais. Os resultados demonstram que as principais concepções de corpo estão relacionadas às de corpo cultural; corpo existencial; corpo máquina/organismo; corpo sujeito pela corporeidade; e corpo identidade/simbólico, com uma forte aproximação deste debate com as perspectivas das ciências humanas, sociais, da filosofia e das artes em todo o período investigado. Em conclusão, este estudo analisou e apresentou variadas tendências, as quais apenas a realidade e a história como critérios de verdade poderão confirmar.

Parasitic infections caused by gastrointestinal nematodes (GINs) are the main cause of production losses in small ruminants, especially sheep. Haemonchus contortus is the most common nematode in tropical regions. The indiscriminate use of synthetic anthelmintics to control helminthosis has led to the development of resistant parasites. As a result, there has been growing interest in using plant extracts and natural products to control gastrointestinal nematodes in sheep. Therefore, this study aimed to evaluate the in vivo anthelmintic activity of the hydroethanolic extract of Piper cubeba fruit in sheep naturally infected with gastrointestinal nematodes. Initially, an experiment was conducted where the Piper cubeba extract was administered at a dose of 2.5 mg/kg body weight three times at 7-day intervals. For this, 18 animals were divided into three groups: a control group, a group treated with levamisole phosphate at 4.7 mg/kg body weight subcutaneously, and a group treated with Piper cubeba extract, which was administered in pure form orally to the animals through a cannula. Based on the results of this experiment, a second experiment was conducted using the same experimental design and same extract, but the effectiveness of the extract was evaluated at a single dose of 5.0 mg/kg body weight administered on day 0. The determination of biochemical parameters for the group treated with extract and the identification of nematode species for all groups were performed on different days of this experiment. The results of the first experiment showed that the extract reduced the FEC by 84 % on day 7 and 83 % on day 35 compared to the control group. These results prompted a second experiment, using the same experimental design, but with the extract administered to the animals in a single dose of 5 mg/kg body weight. The result for the reduction in FEC in the levamisole-treated group was similar to that obtained in the first experiment, whereas in the group treated with a single dose of the extract, the reduction was significant from day 7, reaching 97 % by day 35 compared to the control group, with no significant difference from the levamisole-treated group. Regarding nematode species, on day 0, all treatments in the experiment showed a predominance of Haemonchus contortus, but other species such as Cooperia, and Oesophagostomum were also identified. On day 35, only Haemonchus contortus was identified in the extract-treated group and the levamisole-treated group, whereas Cooperia and Oesophagostomum species were also found in the control group. Toxicity tests for liver and kidney functions showed no alterations after administration of the single dose extract. These results demonstrate the in vivo anthelmintic activity of the hydroethanolic extract of Piper cubeba fruits and suggest its potential use as an alternative to synthetic chemicals in controlling parasites in sheep., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)