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Institution

Universidade Estadual do Vale do Acaraú

EducationSobral, Brazil
About: Universidade Estadual do Vale do Acaraú is a education organization based out in Sobral, Brazil. It is known for research contribution in the topics: Chalcone & Health promotion. The organization has 205 authors who have published 234 publications receiving 1901 citations.


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Journal ArticleDOI
TL;DR: In this article, the authors analyzed the distribution of the number of births per quartile of Olympic volleyball athletes and whether this would influence anthropometric/motor variables and technical elements.
Abstract: Introduction The Relative Age Effect (RAE) refers to the chronological age difference that occurs between athletes of the same age category, which can benefit individuals born in the first two quartiles of the year. This phenomenon is commonly studied in team sports, yet the results are still inconsistent, especially in volleyball. Objective This study analyzed the distribution of the number of births per quartile of Olympic volleyball athletes and whether this would influence anthropometric/motor variables and technical elements. Methods The sample consisted of 116 male athletes who scored during the Rio 2016 Olympics. For data analysis, we identified each athlete’s quartile as well as data on height, attack and defensive (or block) range, and respective scores during the games. The Chi-square test was then used to verify interquartile distribution. To assess the normality of the other variables, we conducted the Kolmogorov-Smirnov test. Once accepted, one-way ANOVA was performed with the Bonferroni post-hoc test to verify significance between quartiles. A significance level of p≤0.05 was adopted. Results There was no significant difference in the distribution of athletes between quartiles (p = 0.74). When comparing the other variables in terms of the athletes’ trimester of birth, we did not observe any significant difference between height (p = 0.79), attack (p=0.59) and defensive range (p=0.07), and in the scores for serving, attacking and blocking between quartiles either. Conclusion The Relative Age Effect was not observed in Olympic volleyball athletes, therefore this phenomenon is not related to the athletes’ performance. This shows that other possible variables may influence the development of these athletes, discarding the relative age phenomenon. Level of Evidence III; Retrospective and Comparative Study.

3 citations

Journal ArticleDOI
11 Oct 2018
TL;DR: In this article, two empirical formulas can be found in the literature in order to estimate the final efficiency of a pump in this situation, and, next, to present a new proposal for the efficiency estimate in the new operating conditions.
Abstract: The use of pumps which work with variable rotation speed consists of an appropriate tactics for reduction of energy costs in the pump systems. In case of change in speed, the pump starts to work in a new flow pattern, head and efficiency values. Two empirical formulas can be found in the literature in order to estimate the final efficiency of a pump in this situation. This article aims at assessing the accuracy of these formulas and, next, to present a new proposal for the efficiency estimate in the new operating conditions. 50 pumps have been chosen and, for each of them, the above-mentioned formulas have been assessed in three procedures of speed reduction. The analysis of these equations’ accuracy has been accomplished by means of the comparison between the efficiencies estimated by them with the efficiencies calculated with the aid of the affinity laws. The results indicated that, in 95 of the 150 analysis procedures accomplished, the formula proposed presented estimates which have shown to be more precise than the other two formulas. It has also been possible to verify that the average of error detected through the procedure of the new formula (1.60%) has been lower than the average of the other two (1.93% and 2.22%). In light of this fact, the use of the equation here presented is considered advantageous since, from their more accurate efficiency estimates, the calculations for power and energy are also more precise.

3 citations

Journal ArticleDOI
TL;DR: In this paper, the authors presented and analyzed a graphene-based nanophotonic device to operate as a resonator-add/drop filter, whose control is obtained by varying the graphene chemical potential.

3 citations

Journal ArticleDOI
01 Sep 2017
TL;DR: In this article, a medical outcomes study: 36-item short form survey (SF-36) and a questionario sociodemografico for a amostra de 682 brasileiras maiores de 18 anos was used to evaluate the Qualidade de Vida (QV) of Brazilians living in Portugal.
Abstract: RESUMO O artigo teve como objetivo avaliar a Qualidade de Vida (QV) de brasileiras vivendo em Portugal. O 'Medical Outcomes Study: 36-Item Short Form Survey' (SF-36) e um questionario sociodemografico foram aplicados a amostra de 682 brasileiras maiores de 18 anos. Verificou-se que a media dos preditores de QV foi superior para a dimensao 'capacidade funcional'; enquanto as dimensoes 'aspectos emocionais', 'saude mental' e 'vitalidade' apresentaram valores menores. Constatou-se que os processos da migracao e da QV constituem pauta de investigacao continua para a promocao da saude no pais de acolhimento.

2 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20227
202126
202036
201925
201829
201720