Universidade Estadual de Londrina

About: Universidade Estadual de Londrina is a education organization based out in Londrina, Brazil. It is known for research contribution in the topics: Population & Toxoplasma gondii. The organization has 13052 authors who have published 19291 publications receiving 212123 citations.

Increased distance of shooting on basketball jump shot.

Abstract: The present study analyzed the effect of increased distance on basketball jump shot outcome and performance. Ten male expert basketball players were filmed and a number of kinematic variables analyzed during jump shot that were performed from three conditions to represent close, intermediate and far distances (2.8, 4.6, and 6.4m, respectively). Shot accuracy decreased from 59% (close) to 37% (far), in function of the task constraints (p < 0.05). Ball release height decreased (p < 0.05) from 2.46 m (close) to 2.38m (intermediate) and to 2.33m (long). Release angle also decreased (p < 0.05) when shot was performed from close (78.92°) in comparison to intermediate distances (65.60°). While, ball release velocity increased (p < 0.05) from 4.39 m/s (close) to 5.75 m·s(-1) (intermediate) to 6.89 m·s(-1) (far). These changes in ball release height, angle and velocity, related to movement performance adaptations were suggested as the main factors that influence jump shot accuracy when distance is augmented. Key pointsThe increased distance leads to greater spatial con-straint over shot movement that demands an adapta-tion of the movement for the regulation of the accu-racy and the impulse generation to release the ball.The reduction in balls release height and release angle, in addition to the increase in balls release ve-locity, were suggested as the main factors that de-creased shot accuracy with the distance increased.Players should look for release angles of shooting that provide an optimal balls release velocity to im-prove accuracy.

Fluidity of cement pastes with mineral admixtures and superplasticizer—A study based on the Marsh cone test

Abstract: The Marsh cone test is a simple approach for obtaining a practical measure of the fluidity of cement pastes containing superplasticizer and silica fume. Using this method, a study of the effect of water/cement ratio, type and dosage of mineral admixture, and superplasticizer type on cement pastes with different superplasticizer dosages is presented here. Results are presented for cement pastes with silica fume and micronized diatomites as mineral admixtures. In all cases, there is a superplasticizer saturation dosage beyond which there is no significant increase in fluidity and, therefore, can be used for the selection of superplasticizer type and dosage. The data obtained indicate that the relative fluidity generally decreases with an increase in the silica fume content. The Marsh cone approach is also used to compare the effects of the mixing sequence used in the preparation of the pastes. A study of the loss of fluidity over time as a function of the superplasticizer type shows that the trends can vary considerably from one product to another.

Florística e estrutura do componente epifítico vascular em floresta ombrófila mista aluvial do rio Barigüi, Paraná, Brasil

Abstract: O estudo das epifitas vasculares foi realizado em floresta ombrofila mista aluvial do rio Barigui, municipio de Araucaria (25o34' S e 49o20' W); o levantamento qualitativo foi realizado em uma area aproximada de 8,6 ha. Para o estudo quantitativo foram sorteados 110 forofitos, divididos em tres estratos (fuste baixo, fuste alto e copa). Em cada estrato foram atribuidas notas de abundância para as especies epifiticas ocorrentes. No levantamento floristico foram encontradas 49 especies (16 de Pteridophyta, 23 de Liliopsida e 10 de Magnoliopsida), das quais 34 foram observadas na amostragem quantitativa. As familias e generos mais ricos foram: Orchidaceae, Polypodiaceae e Bromeliaceae, e Pleurothallis, Tillandsia e Oncidium. As areas de maior similaridade floristica com este estudo localizam-se no municipio de Curitiba (PR). As especies mais importantes quantitativamente foram Microgramma squamulosa (Kaulf.) de la Sota, Pleopeltis angusta Humb. & Bonpl. ex Kunth, Peperomia catharinae Miq. e Polypodium hirsutissimum Raddi. Em um mesmo forofito, o numero de especies ocorrentes variou de zero a 13, enquanto a soma das notas de abundância para as epifitas variou de zero a 24. A copa apresentou a maior abundância de epifitos, seguido do fuste alto e do fuste baixo.

High predictive value of immune-inflammatory biomarkers for schizophrenia diagnosis and association with treatment resistance.

Abstract: Objectives. Recent schizophrenia (SCZ) research aims to establish biomarkers with high predictive value for the diagnosis, severity of illness or treatment resistance. SCZ is accompanied by activat...