Change-of-direction deficit vs. deceleration deficit: a comparison of limb dominance and inter-limb asymmetry between forwards and backs in elite male rugby union players

The aims of the present study were to: 1) determine whether limb dominance and inter-limb asymmetry were the same across both change of direction (COD) and deceleration (DEC) deficits and, 2) determine the association between the COD and DEC-deficits and other physical performance tests in elite male rugby union players. Twenty five players performed a series of bilateral jumps, linear and COD speed tests at the end of the pre-season period. COD and DEC-deficits were calculated for both left and right sides, and inter-limb asymmetry thereafter. Kappa coefficients revealed moderate levels of agreement in limb dominance between COD and DEC-deficits (Kappa = 0.41 on left; 0.48 on right). For the direction of asymmetry, perfect levels of agreement (Kappa = 1) were evident between 505 time and COD-deficit, but only moderate levels of agreement (Kappa = 0.41) between other asymmetry measures. Pearson’s r correlations showed moderate to large relationships between jumps and linear (r = -0.42 to -0.68) and COD speed (r = -0.41 to -0.58), but not with the COD-deficit (r = 0.15 to -0.31), DEC-deficit (r = 0.01 to -0.32) or asymmetry (r = 0.16 to -0.29). When analyzing by playing position, backs were significantly faster than forwards over 15-m (ES = -0.86) and across all jump tests (ES = 0.86-0.94), with the exception of the squat jump. This study is the first to provide a direct comparison of the COD and DEC-deficits and highlights that limb dominance and asymmetry cannot be guaranteed between tasks

Change of direction deficit in national team rugby union players: is there an Influence of playing position?

The aim of this study was to investigate the change of direction (COD) ability and deficits of elite rugby union players, discriminating between position (backs and forwards), and between "faster and slower players", in multiple COD tasks. Twenty-four male rugby union players from the Brazilian senior National team completed the following assessments: Squat and countermovement jumps; drop jump; standing long jump, horizontal triple jumps; 40-m linear sprint; Pro-agility, L-Drill, and Zig-zag COD tests; and squat 1-repetition maximum. The differences between backs and forwards and between faster and slower performers were examined using magnitude-based inferences. Backs were faster (in both linear and COD speed tests) and jumped higher than forwards. Moreover, they generated an inferior sprint momentum. No differences were found in COD deficit between playing positions. However, when dividing the sample by median split, faster players outperformed their slower counterparts in all power⁻speed variables and presented higher COD deficits. These results suggest that separating rugby players by playing position might not discriminate players with different COD skills and that the median split analysis is more sensitive to identifying these differences. Furthermore, the present data indicate that faster rugby players are less efficient at changing direction and tolerating higher approach velocities in COD maneuvers

Açaí Seeds as a Prospective Biosorbent for Acid Dyes Removal

In this study, were used residual Açaí seeds as a biosorbent for two textile dyes (Acid Yellow 219 (AY) and Acid Red 361 (AR)), in single and binary solutions. Further, kinetic and isothermal studies were carried to evaluate if the chemical modifications in the Açaí seeds would promote an increase in biosorption. Kinetic assays for all solutions showed that more than 50 % of the dyes were removed in the first 15 minutes. The acid treatment of the biosorbent increased the removal of acid dyes in solution by 46 % and 32 %, respectively. In conclusion, chemically modified Açaí seeds showed high capacity for the removal of textile dyes in single (AY qe = 1.40 mg g-1; AR qe = 1.76 mg g–1) and multi-component solutions (AY MIX qe = 2.09 mg g–1; AR MIX qe = 2.23 mg g–1). These results demonstrate that Açaí seeds can be applied in an inexpensive strategy for removing pollutants (single or binary solutions) from wastewater. This work is licensed under a Creative Commons Attribution 4.0 International License

Caracterização do perfil produtivo dos assentados pertencentes ao grupo de olericultura agroecológica do Assentamento 72, em Ladário-MS.

O município de Ladário conta com apenas um assentamento proveniente da reforma agrária, o Assentamento 72. O objetivo desse trabalho foi estudar os diversos arranjos produtivos presentes no grupo de interesse em olericultura agroecologia deste assentamento, como se articulam para a venda da produção e as outras fontes de renda que garantem a permanência das famílias no campo. Os dados foram coletados no mês de maio de 2012, utilizando a técnica do grupo focal, uma das técnicas do Diagnóstico Rápido Participativo ? DRP, com 22 integrantes do grupo de olericultura. O diagnostico aponta que a estratégia de sobrevivência dos agricultores está baseada na diversificação das explorações dentro das propriedades e entre as propriedades, além da necessidade de desenvolver diversas atividades econômicas fora das unidades de produção.1 CD-ROM. Publicado também em: Cadernos de Agroecologia, v. 7, n.2, 2012. Editado por: Leandro Fávio Carneiro, Milton Parron Padovan

Sequencing of Vellozia Spp. genomes to understand drought tolerance and phosphorus acquisition in angiosperms.

PE1164. PAG 2019

Mutual heavy ion dissociation in peripheral collisions at ultrarelativistic energies

We study mutual dissociation of heavy nuclei in peripheral collisions at ultrarelativistic energies. Earlier this process was proposed for beam luminosity monitoring via simultaneous registration of forward and backward neutrons in zero degree calorimeters at Relativistic Heavy Ion Collider. Electromagnetic dissociation of heavy ions is considered in the framework of the Weizsacker-Williams method and simulated by the RELDIS code. Photoneutron cross sections measured in different experiments and calculated by the GNASH code are used as input for the calculations of dissociation cross sections. The difference in results obtained with different inputs provides a realistic estimation for the systematic uncertainty of the luminosity monitoring method. Contribution to simultaneous neutron emission due to grazing nuclear interactions is calculated within the abrasion model. Good description of CERN SPS experimental data on Au and Pb dissociation gives confidence in predictive power of the model for AuAu and PbPb collisions at RHIC and LHC.Comment: 46 pages with 7 tables and 13 figures, numerical integration accuracy improved, next-to-leading-order corrections include

Efeito bioeconômico de níveis de concentrado no confinamento de novilhos.

O confinamento e uma atividade que possibilita o abate de animais jovens e bem acabados, proporcionando, em geral, carcaças e carne de melhor qualidade. Considerando-se que, no Brasil, ainda não se pratica a adequada remuneração pela qualidade das carcaças e da carne e o concentrado e um dos itens que mais onera os custos operacionais de um confinamento a determinação de um nível ótimo de concentrado, que proporcione uma carcaça com um acabamento mínimo, e uma maneira do produtor conseguir maior produtividade nesta atividade. Foi desenvolvido, no Centro Nacional de Pesquisa de Gado de Corte (CNPGC) da Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), um experimento com animais da raça Nelore e outro com animais F1 Pardo Suíço-Nelore, visando a determinar-se o ponto ótimo de adição de concentrado, levando-se em conta o desempenho animal, a qualidade das carcaças e o retorno econômico. No experimento com mestiços, observou-se que a conversão alimentar e ganho de peso diário melhoraram com a adição de concentrado, no qual o maior ganho seria ofertando-se concentrado na proporção de 1,65% do peso vivo dos animais. O melhor retorno econômico, entretanto, seria obtido com a oferta de 1% do peso vivo. No experimento com a raça Nelore, o melhor desempenho seria com adição de concentrado na razão de 1% do peso vivo dos animais, enquanto que o retorno financeiro mostrou-se indiferente ao nível de utilização de concentrado. O custo final de todos os tratamentos foi semelhante, pois, quando houve maior custo diário, o tempo de confinamento foi menor, enquanto que quando o gasto diário foi menor o tempo de confinamento foi maior.bitstream/item/104567/1/Efeito-bioeconomico-de-niveis.pd

A gene expression atlas of Vellozia nivea, a desiccation-tolerant species from the Brazilian campos rupestres.

Velloziaceae are an angiosperm family that contains the most desiccation-tolerant species (approximately 200 out of 270 species). More than 80% of the Velloziaceae species occur in South America, where the greatest morphological diversity is also found. The genus Vellozia comprises both desiccation-tolerant and non-desiccation-tolerant species, offering an excellent model for studying the evolution of desiccation- and drought-tolerance traits on plant genomes. To date, only limited genomic or transcript sequences are available for Velloziaceaespecies. Here we present a Vellozia nivea gene expression atlas across different plant organs and tissues, including flower, developing seeds, root, leaf, stem and seedling. Vellozia nivea is a desiccation-tolerant species, endemic to the Brazilian campos rupestres (rupestrian grasslands) and highly adapted to their extreme conditions. A total of 180.67 Gb of raw data were generated, and of these, 152.79 Gb were subjected to downstream analysis after quality control (QC). Vellozia niveade novotranscriptome assembly was performed with the Trinity bioinformatics tool, resulting in 684.615 contigs. After filtering contaminated sequence contigs from bacteria and fungi and removal of contigs with less than 10 sequence reads associated with the initial assembly, the transcriptome resulted in 195.512 remaining sequences. A GO enrichment analysis was performed on tissue‐specific transcripts. The Vellozia nivea transcriptome should be a useful resource for genome annotation and gene function discovery studies.PE1028