1,720,963 research outputs found
Didattica del Functional Training negli Sport di Squadra
No full textDidattica del Functional Training negli Sport di Squadr
Immobilization of yeast cells in hydroxyethylmethacrylate gels
No full textWhole cells of Saccharomyces cerevisiae were entrapped in polymers of 2-hydroxyethylmethacrylate and sucrose hydrolysis catalysed by its invertase was investigated. Analysis of the experimental results confirmed that diffusional resistance to mass transfer of reactant and product was not induced by immobilization. For the yeast cells in the hydrogel, invertase activity obeyed Michaelis-Menten kinetic and the value of Km (40 mM) was the same as that for yeast cells in bulk phase. The recovery of biocatalyst activity ranged between 17% and 23%, depending on immobilization temperature; the optimum pH range was found to be slightly wider. Storage stability at refrigerator temperature was quite satisfactory; invertase half-life was 267 days. Operational stability of immobilized cells at 45°C (half-life 110 days) was almost twice that of free cells. Finally, cell distribution in the polymer, observed with a scanning electron microscope, was found to be uniform
Enhancing Academic Performance, Cognitive Functions, and MentalWell-Being Through Active Breaks: Evidence from a Pilot Study with University Student Sample
No full textАнтропометричні характеристики юних спортсменів з бочче за спеціалізацією «Раффа»: Аналіз фізичних параметрів юних гравців національного рівня
No full textBackground. The sport of bocce, and in particular the specialty of Raffa, has seen significant competitive development in recent decades, but the scientific literature on the anthropometric characteristics of athletes, especially among young people, is still limited.
Objectives. This study aimed to analyze the physical characteristics of Raffa’s junior players at national level, focusing on anthropometric variables such as height, weight and body mass index (BMI).
Materials and methods. A sample of twenty athletes, divided into a research group consisting of ten athletes of national interest and a control group of ten non-competitive practitioners, was subjected to baseline measurements during regional events.
Results. The findings showed an average height of 170.5 cm and an average weight of 65.8 kg for the research team, with an average BMI of 22.63, indicating a condition of normal weight. However, 33.3% of the athletes in the research group were overweight or class I obese, suggesting the need for greater attention to physical preparation. The data were compared with those of the control group, which had an average height of 173.5 cm, an average weight of 74.5 kg and a BMI distribution with 50% of the athletes classified as overweight. The results were discussed in relation to the initial hypotheses and the existing literature.
Conclusions. This study offers important insights for the development of personalized training programs and for the selection of young talents, highlighting the importance of adequate physical preparation. Future prospects include deepening the analysis of the somatotype and the use of larger and more diverse samples.Історія питання. За останні десятиліття бочче як різновид спорту і, зокрема, спеціалізація «Раффа», зазнали значного конкурентноспроможного розвитку, проте наукова література щодо антропометричних характеристик спортсменів, особливо серед молоді, представлена досі обмежено.
Мета дослідження. Метою цього дослідження було проаналізувати фізичні характеристики юних раффа-гравців на національному рівні, зосередивши увагу на антропометричних показниках, як-от зріст, вага та індекс маси тіла (ІМТ).
Матеріали та методи. Задля проведення базових вимірювань під час регіональних змагань, вибірку із двадцяти спортсменів розподілено на дослідницьку групу, що складалася з десяти спортсменів національного рівня, і контрольну групу з десяти практикуючих осіб, які не брали участі у змаганнях.
Результати. За результатами дослідження середній зріст досліджуваної групи становив 170,5 см, середня вага — 65,8 кг, середній ІМТ — 22,63, що вказує на стан нормальної ваги. Однак 33,3 % спортсменів у досліджуваній групі мали надмірну вагу або ожиріння I ступеня, що свідчить про необхідність приділяти більшу увагу фізичній підготовці. Отримані дані було порівняно із показниками контрольної групи, яка мала середній зріст 173,5 см, середню вагу 74,5 кг та розподіл ІМТ, за яким 50 % спортсменів класифіковано як особи з надмірною вагою. Результати обговорено відповідно до вихідних гіпотез та наявних літературних даних.
Висновки. У цьому дослідженні представлено важливу інформацію для розробки персоналізованих тренувальних програм та відбору молодих талантів, що підкреслює важливість належної фізичної підготовки. Подальші перспективи включають поглиблення аналізу соматотипу та використання більших та різноманітніших вибірок
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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