LESÃO DE LIGAMENTO CRUZADO ANTERIOR EM ATLETAS DE FUTEBOL: UMA REVISÃO INTEGRATIVA

Introduction: Anterior cruciate ligament (ACL) rupture is one of the most prevalent and serious injuries in ball sports, especially in soccer, occurring mainly in non-contact situations. In view of the above, there is a need for a study that seeks to better inform about anterior cruciate ligament surgeries in soccer athletes. Therefore, the aim of this study is to present a solid subject, gathering quality and current articles available in the national and international literature. Materials and methods: This is an integrative literature review. After applying all inclusion and exclusion criteria, a final sample of 6 articles was obtained for the integrative review. Results and discussion: It is said that the incidence of ACL lesions is higher in female athletes when compared to males. Regarding residual laxity in the ACL graft, studies have observed that, in the long term, this problem may worsen the prognosis of patients, increasing the chance of surgical revisions. As for the return of athletes to soccer, it was observed that players who return to the sport have a significantly higher risk of suffering a new knee injury. Conclusion: the articles analyzed suggested that surgical treatment was highly resolutive for ACL injuries.Introducción: La rotura del ligamento cruzado anterior (LCA) es una de las lesiones más frecuentes y graves en los deportes de pelota, principalmente en el fútbol, que se produce principalmente en situaciones en las que no hay contacto. En vista de lo anterior, es necesario un estudio que busque informar mejor sobre las cirugías de rotura del ligamento cruzado anterior en los deportistas de fútbol. Por lo tanto, el objetivo de este estudio es presentar un tema sólido, reuniendo artículos de calidad y actuales disponibles en la literatura nacional e internacional. Materiales y métodos: Se trata de una revisión bibliográfica integradora. Tras aplicar todos los criterios de inclusión y exclusión, se obtuvo una muestra final de 6 artículos para la revisión integradora. Resultados y discusión: Se dice que la incidencia de las lesiones del LCA es mayor en las mujeres deportistas en comparación con los hombres. En cuanto a la laxitud residual en el injerto del LCA, los estudios han observado que, a largo plazo, este problema puede empeorar el pronóstico de los pacientes, aumentando la posibilidad de revisiones quirúrgicas. En cuanto al regreso de los deportistas al fútbol, se observó que los jugadores que vuelven a practicar este deporte tienen un riesgo significativamente mayor de sufrir una nueva lesión de rodilla. Conclusión: los artículos analizados sugieren que el tratamiento quirúrgico es altamente resolutivo para las lesiones del LCA.Introdução: A ruptura do ligamento cruzado anterior (LCA) é uma das lesões mais prevalentes e graves nos esportes com bola, principalmente no futebol, ocorrendo principalmente em situações em que não há contato. Diante do exposto, há necessidade de um estudo que busque informar melhor sobre as cirurgias de lesão do ligamento cruzado anterior em atletas de futebol. Sendo assim, o objetivo do estudo se dá por expor assunto de forma sólida, reunindo artigos de qualidade e atuais disponíveis na literatura nacional e internacional. Materiais e métodos: Trata-se de uma revisão integrativa da literatura. Após aplicação de todos os critérios de inclusão e exclusão, obteve-se uma amostra final de 6 artigos para a revisão integrativa. Resultado e discussão: É dito que a incidência de lesões de LCA é maior em atletas do sexo feminino quando comparada ao sexo masculino. Em relação à frouxidão residual no enxerto de LCA, estudos observaram que, à longo prazo, esse problema pode piorar o prognóstico dos pacientes, aumentando a chance de revisões cirúrgicas. Quanto ao retorno dos atletas ao futebol, observou-se que os jogadores que retornam ao esporte têm um risco significativamente maior de sofrer nova lesão no joelho. Conclusão: os artigos analisados sugeriram que o tratamento cirúrgico foi altamente resolutivo no caso de lesões de LCA.Introdução: A ruptura do ligamento cruzado anterior (LCA) é uma das lesões mais prevalentes e graves nos esportes com bola, principalmente no futebol, ocorrendo principalmente em situações em que não há contato. Diante do exposto, há necessidade de um estudo que busque informar melhor sobre as cirurgias de lesão do ligamento cruzado anterior em atletas de futebol. Sendo assim, o objetivo do estudo se dá por expor assunto de forma sólida, reunindo artigos de qualidade e atuais disponíveis na literatura nacional e internacional. Materiais e métodos: Trata-se de uma revisão integrativa da literatura. Após aplicação de todos os critérios de inclusão e exclusão, obteve-se uma amostra final de 6 artigos para a revisão integrativa. Resultado e discussão: É dito que a incidência de lesões de LCA é maior em atletas do sexo feminino quando comparada ao sexo masculino. Em relação à frouxidão residual no enxerto de LCA, estudos observaram que, à longo prazo, esse problema pode piorar o prognóstico dos pacientes, aumentando a chance de revisões cirúrgicas. Quanto ao retorno dos atletas ao futebol, observou-se que os jogadores que retornam ao esporte têm um risco significativamente maior de sofrer nova lesão no joelho. Conclusão: os artigos analisados sugeriram que o tratamento cirúrgico foi altamente resolutivo no caso de lesões de LCA

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Mapping density, diversity and species-richness of the Amazon tree flora

Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

Author correction: One sixth of Amazonian tree diversity is dependent on river floodplains

In the version of the article initially published, the affiliation of Edgardo Manuel Latrubesse was incorrect and has now been amended to Environmental Sciences Graduate Program-CIAMB, Federal University of Goiás, Goiânia, Brazil in the HTML and PDF versions of the article

Mapping density, diversity and species-richness of the Amazon tree flora

Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV