Search results for "pions"

Identifying individuality and variability in team tactics by means of statistical shape analysis and multilayer perceptrons.

2012

Abstract Offensive and defensive systems of play represent important aspects of team sports. They include the players’ positions at certain situations during a match, i.e., when players have to be on specific positions on the court. Patterns of play emerge based on the formations of the players on the court. Recognition of these patterns is important to react adequately and to adjust own strategies to the opponent. Furthermore, the ability to apply variable patterns of play seems to be promising since they make it harder for the opponent to adjust. The purpose of this study is to identify different team tactical patterns in volleyball and to analyze differences in variability. Overall 120 s…

The predictive power of game-related statistics for the final result under the rule changes introduced in the men’s world water polo championship: a …

2019

The objectives of this study were (i) to compare water polo game-related statistics by match outcome (winning and losing teams) after the application of the new rules, and (ii) to develop a classif...

Hemocyanin conformational changes associated with SDS-induced phenol oxidase activation.

2007

The enzymatic activity of phenoloxidase is assayed routinely in the presence of SDS. Similar assay conditions elicit phenoloxidase activity in another type 3 copper protein, namely hemocyanin, which normally functions as an oxygen carrier. The nature of the conformational changes induced in type 3 copper proteins by the denaturant SDS is unknown. This comparative study demonstrates that arthropod hemocyanins can be converted from being an oxygen carrier to a form which exhibits phenoloxidase activity by incubation with SDS, with accompanying changes in secondary and tertiary structure. Structural characterisation, using various biophysical methods, suggests that the micellar form of SDS is …

Nanosistemi polimerici per la veicolazione di farmaci antitumorali o attivi sul sistema nervoso centrale

2014

Sex difference in race performance and age of peak performance in the Ironman Triathlon World Championship from 1983 to 2012

2012

Abstract Background The fastest Ironman race times in ‘Ironman Hawaii’ were achieved in very recent years. This study investigated the change in sex difference in both race performance and the age of peak performance across years in the top ten athletes for split disciplines and overall race time in the ‘Ironman Hawaii’ between 1983 and 2012. Methods Changes in split times, overall race times, and age of athletes across years for the top ten overall and the fastest swimmers, cyclists, and runners were investigated using regression analyses and analyses of variance. Results Between 1983 and 2012, the overall top ten men and women finishers improved their swimming (only men), cycling, running…

The glocalizing duality of contemporary sport

2010

AbstractThis paper assesses the current debate, in the sphere of the sociology of sport, on globalization and sport, arguing that the advance of world sport now, at the beginning of the twenty-first century, is better understood in terms of the phenomenon of glocalization, that is, as a process by which global demands and forces conform or adapt to local conditions (Robertson), contributing in this way to the production of ‘township’ and ‘community’ and to the emergence of national identities. The 1992 Barcelona Olympics, the 1993 European Football Championship and the 2002 Korea-Japan World Football Cup are presented as examples of the dual and paradoxical character of contemporary sport i…

Functionnalized magnetite nanoparticles for bimodal imaging MRI/PET

2015

Functionalized magnetite nanoparticles for bimodal MRI/PET imagingSuperParamagnetic Iron Oxide Nanoparticles (SPIONs) have been widely studied in the biomedical field due to their promising application as nanodrugs and MRI (Magnetic Resonance Imaging) contrast agents (T2). In this study, magnetite (Fe3O4) nanoparticles have been developed for use as contrast agents for MRI/PET (Positron emission tomography) double imaging. First, functionalized stable superparamagnetic SPIONs have been synthesized in a continuous hydrothermal reactor. During the synthesis, hydrophilic agents (citric acid, LDOPA, DHCA and PHA) have been grafted on the surface of the nanoparticles. The functionalization of th…

Inulin-based polymer coated SPIONs as potential drug delivery systems for targeted cancer therapy

2014

This paper deal with the synthesis and characterization of PEGylated squalene-grafted-inulin amphiphile capable of self-assembling and self-organizing into nanocarriers once placed in aqueous media. It was exploited as coating agent for obtaining doxorubicin loaded superparamagnetic iron oxide nanoparticles (SPIONs) endowed with stealth like behavior and excellent physicochemical stability. Inulin was firstly modified in the side chain with primary amine groups, followed in turn by conjugation with squalenoyl derivatives through common amidic coupling agents and PEGylation by imine linkage. Polymer coated SPIONs were so obtained by spontaneous self-assembling of inulin copolymer onto magnet…

The Impact of World and European Football Cups on Stroke in the Population of Dijon, France: A Longitudinal Study from 1986 to 2006

2013

Background: Acute stress may trigger vascular events. We aimed to investigate whether important football competitions involving the French football team increased the occurrence of stroke. Methods: We retrospectively retrieved data of fatal and nonfatal stroke during 4 World Football Cups (1986, 1998, 2002, and 2006) and 4 European Championships (1992, 1996, 2000, and 2004), based on data from the population-based Stroke Registry of Dijon, France. One period of exposure was analyzed: the period of competition extended to 15 days before and after the competitions. The number of strokes was compared between exposed and unexposed corresponding periods of preceding and following years using Poi…

Engagement in sports virtual brand communities

2018

Abstract The aim of this study is to analyze the impact of sports sponsorship in virtual brand communities (VBCs) on consumers' engagement within these communities. We used a professional team in the Scotiabank National Opening Championship (Chile) as the study context and collected data from participants (N = 268) on the team's social networks. We used structural equation systems and the Qualitative Comparative Analysis (QCA) technique to test the hypotheses. The results present five causal combinations, considering factors inherent to the team sponsor that influence engagement within a VBC. The QCA model and SEM explain 78.5% and 71% of engagement, respectively. The most noteworthy variab…