Made available in DSpace on 2014-06-12T15:51:21Z (GMT). No. of bitstreams: 2 arquivo5268_1.pdf: 3248551 bytes, checksum: 6a0ded28cd680e2a4b3cf92c42c00d73 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2007 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / A pesquisa e o desenvolvimento de procedimentos para sintetizar polímeros com propriedades específicas é uma área tecnológica de intensa atividade nos dias atuais. Este desenvolvimento depende, em parte, da habilidade de acompanhar e entender a cinética de polimerização destes materiais. Por exemplo, a rigidez mecânica de um polímero depende do tamanho de suas cadeias. Por sua vez, para polimerizações em cadeia, o tamanho das cadeias depende de como ocorre a fase de auto-aceleração durante a polimerização. Desta forma, o desenvolvimento de técnicas e métodos que permitam seguir a cinética de polimerização é de grande interesse científico e tecnológico. Neste trabalho, desenvolvemos um novo método de acompanhamento da cinética de polimerização baseado, essencialmente, em medições do tempo de relaxação spin-rede, T1, dos núcleos de hidrogênio, em função do tempo de polimerização, usando uma decomposição multi-exponencial da evolução da magnetização, em experimentos de inversão-recuperação. Este método é capaz de produzir estimativas das concentrações de sítios monoméricos e sítios poliméricos em função do tempo. O método foi testado no acompanhamento da cinética de polimerização de dois tipos de polímeros: o Resapol 10-249, uma resina comercial a base de poliéster, e o poli(metil metacrilato) (PMMA). Além disso, os experimentos foram realizados sob várias concentrações inicias dos reagentes. Para assegurar os resultados obtidos com este novo método, realizamos experimentos de espectroscopia no infravermelho, com amostras de PMMA, preparadas nas mesmas concentrações que as amostras utilizadas nos experimentos de RMN. Também foram realizadas medidas da temperatura da reação Uma das vantagens do novo método é que podemos acompanhar a conversão de monômero em polímero assim como a formação do polímero propriamente dito. Finalmente, as medições no MMA, sugerem que o método de relaxometria por RMN é sensível à formação de mais de um tipo de polímero, o que seria muito desejável, visto que traria mais informação sobre a cinética de polimerização de copolímeros, por exemplo. Uma outra possibilidade seria a de que o método estaria detectando dois comprimentos de cadeia médios distintos. A habilidade de reconhecer uma distribuição de comprimentos de cadeia bimodal também seria bastante desejável

The basis of this diploma thesis is to find out the most common way to end MMA (mixed martial arts) matches in the UFC (Ultimate fighting championship) organization. The theoretical part is devoted to the description of MMA as such, history, rules with a larger description of possible ways to end the match and with a description of weight categories that are essential for us in this work. He also deals with the UFC organization and its history and MMA in the Czech Republic. The practical part is devoted to research, which focuses on ways to end the MMA match in the UFC in various men's weight categories. The same is done for weight categories in the Czech Republic. KEYWORDS MMA, the UFC, TKO, Submission

Made available in DSpace on 2017-07-21T14:42:42Z (GMT). No. of bitstreams: 1 Goncalo.pdf: 1717024 bytes, checksum: 6398dc35b8c002a0b641fff78a1632e1 (MD5) Previous issue date: 2016-12-14 / This study, whose study problem is the relationship that is established between the violence and the emotion in the MMA, from the perspective of fighters and spectators,aims to analyze the violence and the emotion in the MMA from the perspective of both.Among the specific objectives are: historicizing the MMA; to present theoretical elements that allow the understanding of violence and emotion in the universe of MMA;to Identify what kind of emotion is present during the preparation period and the moment of the fight. The literature chosen to discuss the issue suggests that violence control has a strong association with emotional control (ELIAS; DUNNING, 1992).From the perspective of the fighters and spectators, is tried to discuss violence and emotion, using the concepts of symbolic violence, real violence, legitimate violence and systemic violence. From this, three hypothesis are presented: the first is that the MMA is a violent sport, conceived in this way in order to serve the demands of a society and a violent man by nature; The second one points out that the perception of fighters that the MMA is not violent is related to the fact that the competitions possess rules, unlike what happens on the streets. The third hypothesis upholds that there is a social need for the public to experience violence, which can be seen by the increasing demand for events involving MMA, indicated by the increase in TV ratings and the purchasing of pay-per-view packages. The proposed temporal frame refers to the period between 1995 and 2016. The initial time mark was established due to changes in the rules occurred after the UFC-5 event took place, a period in which the confrontations had no time limit, it means, there was no division by rounds, nor amaximum period length for the fight to end. After the changes, the fights began to occur with pre-established time length. Regarding the final temporal beacon, the year 2016, it is due to the edition of the UFC-198, held in the city of Curitiba-PR. In this event,spectators were interviewed, as well as, were concluded the semi-structured observations and interviews with the fighters. The methodology used was qualitative of the ethnographic type, whose instruments were the participating observation and semi-structured interviews. It was found that, from the perspective of fighters and spectators, the MMA is not a violent sport, although the literature and the interviews conducted with them show the presence of a symbolic violence during training and the moment of the combat. There is also a strong emotional appeal, in which happiness and fear are present. The text is structured in three chapters, by which it was sought to discuss violence and emotion based on the proposed theoretical framework and the performed interviews. / Esta pesquisa tem como objetivo geral analisar a violência e a emoção no MMA sob a perspectiva de lutadores e espectadores, a partir do estudo da relação que se estabelece entre ambos. Entre os objetivos específicos estão historicizar o MMA; apresentar elementos teóricos que possibilitem a compreensão da violência e da emoção no universo do MMA; e identificar que tipo de emoção está presente durante o período de preparação e o momento da luta. A pesquisa se pauta na literatura de Elias e Dunning (1992), a qual sugere que o controle da violência possui forte associação com o controle emocional. Procura-se discutir violência e emoção utilizando-se os conceitos de violência simbólica, violência real, violência legítima e violência sistêmica. Deste modo, apresentam-se três hipóteses: a primeira é que o MMA é um esporte violento, concebido desta forma com fins de atender as demandas de uma sociedade e de um homem violento por natureza; a segunda aponta que a percepção tida pelos lutadores de que o MMA não é violento está relacionada ao fato de as competições apresentarem regras, diferentemente do que acontece nas ruas; e a terceira é a de que existe uma necessidade social, por parte do público, de vivenciar a violência, o que pode ser constatado por meio da crescente procura por eventos que envolvem o MMA. O recorte temporal refere-se ao período compreendido entre 1995 e 2016. A baliza temporal inicial foi estabelecida em virtude de mudanças de regras ocorridas a partir da realização do UFC – 5, em que os confrontos não apresentavam limite de tempo, ou seja, não havia divisão por rounds, tampouco tempo máximo para que a luta se encerrasse. Após este evento, as lutas passaram a ocorrer com tempos determinados. Já a baliza temporal final, 2016, deve-se à edição do UFC -198, em que foram entrevistados espectadores e concluídas as observações e entrevistas semiestruturadas com os lutadores. A metodologia utilizada foi qualitativa do tipo etnográfica, cujos instrumentos foram a observação participante e a entrevista semiestruturada. Constatou-se que, na perspectiva dos lutadores e espectadores, o MMA não é um esporte violento, embora a literatura e as entrevistas evidenciem a presença de violência simbólica durante os treinamentos e o momento do combate.Existe, ainda, um forte apelo emocional, no qual a felicidade e o medo estão presentes. O texto foi organizado em três capítulos, pelos quais se buscou discutir a violência e a emoção a partir do referencial teórico proposto e das entrevistas semiestruturadas.

ABA type tri-block amphiphilic polyelectrolyte consisting of poly(methyl methacrylate-block-methacrylic acid-block-methyl methacrylate) (P(MMA-b-MAA-b-MMA)) was synthesized by atom transfer radical polymerization technique (ATRP) and the self-assembly behavior of the polymers in aqueous solution was studied over the course of neutralization. Combination of potentiometric and conductometric titrations along with dynamic light scattering (DLS) techniques were used to investigate the size and shape of aggregates at various degrees of neutralization. The effect of hydrophobic-hydrophilic (MMA-MAA) ratio and polymer chain length on the aggregation behavior during neutralization was studied. P(MMA-b-MAA-b-MMA) with longer MMA segment self-assembles via the close association mechanism through stronger self-entanglement of MMA chains, whereas P(MMA-b-MAA-b-MMA) with shorter MMA chain self-assembles via the open association mechanism, as confirmed by transmission electron microscopy (TEM). Conductometric titration was used to determine the counterion condensation during the course of neutralization. When the charge density of micelle approaches a critical value as neutralization progresses, counterion condensation of Na+ ions on the polymer chains occurs. The effect of counterion condensation on the aggregation behavior during neutralization was elucidated. / Singapore-MIT Alliance (SMA)

En vanlig orsak till brott i svetsade kolstålskonstruktioner kan härledas till små sprickbildningar som uppstår i svetsgodset eller det område av grundmaterialet som har påverkats strukturellt av energin från svetsprocessen, även kallad HAZ. Dessa sprickor uppstår ofta timmar eller dagar efter avslutad svetsning och beror på en kombination av väte, en hård och spröd mikrostruktur och närvaro av spänningar. För att undvika dessa sprickor kan man förvärma materialet innan svetsning. Den förhöjda arbetstemperaturen ger en långsammare svalning vilken minskar risken för martensitbildning och låter väte diffundera ut från svetsförbandets kritiska delar. Det finns olika beräkningsmodeller för att räkna ut den förvärmningstemperatur som krävs för att motverka dessa sprickor. De flesta av dem är grafiska men försök har gjorts att översätta dessa till matematiska algoritmer. Beräkningsmodellerna kan ge väldigt varierande temperaturer och olika modeller kan anses vara bäst tillämpade till olika stål. I denna rapport har det undersökts vilken beräkningsmodell som är bäst lämpad för konstruktionsstålet S355J2. Modellerna som har använts är den matematiska CET, de grafiska CEIIW och CEN samt matematiska tolkningar av de två sistnämnda. Utvärderingen har gjorts genom att svetsa upp prover på plåtar med en godstjocklek på 30 mm med en stegvis ökande förhöjd arbetstemperatur. Dessa prover har sedan genomgått både oförstörande och förstörande provning för att undersöka hur sprickbenägna de är. En analys av svetsförbandets mikrostruktur har också genomförts för att identifiera de mest kritiska zonerna. Det visade sig att de matematiska tolkningarna av de grafiska metoderna skiljde sig såpass mycket från sina grafiska motsvarigheter att de inte kan rekommenderas för användning. Det visade sig även att det inte fanns en beräkningsmodell av ursprungsmodellerna som var bäst lämpad för S355J2 utan valet berodde helt och hållet på vilken sträckenergi som användes då modellerna tar olika mycket hänsyn till denna. För en sträckenergi på över 1,6 kJ/mm rekommenderas CET-metoden som beräknade en temperatur som gav goda materialparametrar. För sträckenergier under 0,9 kJ/mm beräknar ingen metod en tillräckligt hög temperatur, men CEIIW är den som beräknar den högsta förhöjda arbetstemperaturen och rekommenderas därför för användning. Man bör dock ha i åtanke att den inte var tillräckligt hög och bör därför ses som en lågt räknad rekommendation. Mellan 0,9 kJ/mm och 1,6 kJ/mm har inga prover svetsats men rekommendationen är att använda sig av CET-metoden då den är enkel och beräknar högst temperatur. Vad det gäller svetsförbandets kritiska zoner så visade det sig att korntillväxtzonen var området där vätesprickor har störst förutsättningar för att uppstå. / One of the most common causes of failure in welded carbon steel constructions can be traced to small cracks that occur in the weld metal or in the area of the base metal that has been affected structurally by the energy from the welding process, also known as HAZ. These cracks can occur hours or days after the welding is completed and do so due to a combination of hydrogen that has penetrated the metal during the weld process, a hard and brittle microstructure and tensile stresses acting on the weld. A method to avoid these cracks is to preheat the material before welding. The increased temperature results in a slower cooling which reduces the risk of a martensitic microstructure and allow hydrogen to diffuse out of the most critical zones of the welded joint. There are many different methods for calculating the preheat temperature needed to counter these cracks. Most of them are solved graphically but attempts have been made to translate them into mathematical algorithms to facilitate calculations. The outcome of the methods may vary and different methods can be considered to be best applied to various steel. The purpose of this study is to investigate which method is best suited to determine the preheat temperature to eliminate the risk of hydrogen cracking for the structural steel S355J2. The methods used in this study was the mathematical CET, the graphic CEIIW and CEN and mathematical interpretations of the latter two. The evaluation was made by welding samples of plates with a thickness of 30 mm and with an incrementally increased preheat temperature. These samples were then subjected to both non-destructive and destructive testing to examine how prone they were to crack. An analysis of the weld microstructure was also conducted to identify the most critical zones. It turned out that the mathematical interpretations of the graphic methods differed so much from their graphical equivalent that they can not be recommended for use. It was also found that none of the original methods can be said to be best suited for S355J2 but the choice depended entirely on the heat input. For a heat input over 1.6 kJ/mm it is recommended to use the CET-method which estimated a temperature that gave good material parameters. For a heat input below 0.9 kJ/mm no method calculates a sufficiently high temperature, but the CEIIW-method is calculating the highest temperature and is therefore recommended for use. However, one should keep in mind that it was not sufficient and should therefore be seen as a conservative recommendation. No samples were welded between 0.9 kJ/mm and 1.6 kJ/mm but the recommendation is to use the CET- method because it is simple and calculates the maximum temperature. It was also found that the coarse grain zone was the area where hydrogen cracking is most likely to occur.

MMA (mixed martial arts) has expanded globally as entertainment, training and competition in recent years. MMA is a sport where techniques such as punches, kicks, throws and joints are used to defeat the opponent in unarmed close combat. Standing techniques such as punches and kicks are of great importance in sports and coaches / athletes strive to develop efficient techniques. The study investigates how UFC athletes work with distance moves relative to each other in knockout or tech knockout matches, comparisons were also made between a heavier and an easier weight class to detect any differences in behavior. Data was collected through a match observation where a total of 50 matches from the MMA event were collected with reverse chronological order starting from fight night Johnson VS Reis. The results showed that there were differences between movement and non-occupation at KO / TKO, but also that they were not significant. The same conclusion was made for comparisons between the weight classes. When there was an individual move, it was most common for it to move forward and the most common movement between athletes was forwards. Handling of dynamic and static distances is likely to have impact on elite athletes within MMA, but the results show that the difference between athletes in different weight classes is not significant and is likely to be affected to an equal extent by individual athletes' skills. / Kampsporten MMA (mixed martial arts) har expanderat globalt som underhållning, träning och tävling under de senaste åren. MMA är en sport där tekniker som slag, sparkar, kast och ledlås används för att besegra motståndaren i obeväpnad närkamp. Stående tekniker som slag och spark är av stor vikt inom sporten och tränare/atleter strävar efter att utveckla dessa tekniker på effektivaste sätt. Studien undersöker hur atleter inom UFC arbetar med distanshantering i förhållande till varandra vid matcher som avgjordes med knockout eller tekniskknockout, jämförelser gjordes också mellan en tyngre och en lättare viktklass för att påvisa eventuella skillnader i beteende. Data samlades in genom en matchobservation där totalt 50 matcher från MMA event samlades in med omvänd kronologisk ordning med start från galan fight night Johnson VS Reis. Resultatet visade att det fanns skillnader mellan rörelse och ickerörelse vid KO/TKO, men också att dessa inte var signifikanta. Samma slutsats gällde vid jämförelser mellan viktklasserna. När det skedde en enskild rörelse var det vanligaste att den skedde framåt och den vanligaste rörelsekombinationen mellan atleterna var framåt-framåt. Hantering av dynamisk och statiskdistans har med stor sannolikhet en betydande inverkan för elitatleter inom MMA, men resultatet visar att skillnaden mellan atleter i olika viktklasser inte är signifikant och påverkas troligen i lika stor utsträckning av individuella färdigheter hos atleterna.

This study is a research on four women's point of view of gender in MMA. The purpose of my essay was to gain a better understanding of women's experiences and what the basis of women's experiences is and if the location can affect their experiences. I chose to do a qualitative study with a hermeneutic research approach in which I did four semi-structured interviews. I interviewed women who are living in Stockholm and Uppsala. The results were then analyzed with the help of gender theories of Hirdman and Butler, but also on theori from Corrnell on masculinity. The study shows similarities in the results to the previous studies that I found. Keywords: Women, MMA, Gender and Experiences

The purpose of the study has been to identify the motivational factors prompting the South African MMA (Mixed Martial Arts) fan to attend events and how these factors are influencing their spending patterns and media consumption. With the growing popularity of Africa’s biggest MMA promoter and the production values and size of events, EFC (Extreme Fighting Championship) is taking the African market to a global level. To understand the South African MMA fan, marketers should differentiate strategies to meet these various customers’ satisfaction needs and demands. Media plays a big role in the growing of the sport, and Twitter, Facebook, YouTube and television broadcasts all contribute to fans gaining access to the MMA sport. The following motivational factors were used to measure the MMA fan: Aesthetic quality, Sports interest, Drama/Eustress, Socialising, Vicarious achievement, Fighter interest, Adoration/Hero, Violence, Escape, National Pride and Economic Factors. Participants who attended the local amateur MMA fights in the south of Johannesburg were requested to complete the online web questionnaire to establish the motivational factors of South African MMA fans. Aesthetic quality, Sports interest and Drama/Eustress were ranked as the highest motivators. There were some gender differences where females indicated that they were more interested in the Drama factor and the males in the Sports interest factor. It was clear from the results that most male fans were drawn to MMA by word-ofmouth, clubs or events. The female fans used the internet and television as their media consumption of MMA. Although the study was limited to a local MMA event, insights into the motivation of the South African MMA fan were discovered as well as how media is consumed differently by different genders. / MBA, North-West University, Potchefstroom Campus, 2014

The purpose of the study has been to identify the motivational factors prompting the South African MMA (Mixed Martial Arts) fan to attend events and how these factors are influencing their spending patterns and media consumption. With the growing popularity of Africa’s biggest MMA promoter and the production values and size of events, EFC (Extreme Fighting Championship) is taking the African market to a global level. To understand the South African MMA fan, marketers should differentiate strategies to meet these various customers’ satisfaction needs and demands. Media plays a big role in the growing of the sport, and Twitter, Facebook, YouTube and television broadcasts all contribute to fans gaining access to the MMA sport. The following motivational factors were used to measure the MMA fan: Aesthetic quality, Sports interest, Drama/Eustress, Socialising, Vicarious achievement, Fighter interest, Adoration/Hero, Violence, Escape, National Pride and Economic Factors. Participants who attended the local amateur MMA fights in the south of Johannesburg were requested to complete the online web questionnaire to establish the motivational factors of South African MMA fans. Aesthetic quality, Sports interest and Drama/Eustress were ranked as the highest motivators. There were some gender differences where females indicated that they were more interested in the Drama factor and the males in the Sports interest factor. It was clear from the results that most male fans were drawn to MMA by word-ofmouth, clubs or events. The female fans used the internet and television as their media consumption of MMA. Although the study was limited to a local MMA event, insights into the motivation of the South African MMA fan were discovered as well as how media is consumed differently by different genders. / MBA, North-West University, Potchefstroom Campus, 2014

Chronic environmental exposure to inorganic arsenic is widely associated with human disease. Low human arsenic secondary methylation efficiency (SME), represented by high urinary monomethylarsonic acid (%uMMA) and low urinary dimethylarsinic acid to monomethylarsonic acid ratio (uDMA/uMMA), has been consistently associated with increased risk of arsenic-related diseases. Therefore the determination of factors modulating arsenic SME acquires particular importance. The aims of the present study are to identify novel factors of variability in arsenic secondary methylation, and to test for potential factors influencing arsenic SME for which there is equivocal literature support. A population of 808 subjects was recruited from northwest Mexico environmentally exposed to arsenic. The mean total urinary arsenic in the population was 171 μg/L. Great interindividual variability in %uMMA excretion was observed (0.85% - 40.5%). Three intronic polymorphisms in arsenic (3+ oxidation state) methyltransferase (AS3MT), the key gene in the metabolism of arsenic, were confirmed to be associated with increased arsenic SME in this study. Further analysis of this genomic region showed a large block of linkage disequilibrium (LD) comprising these three genetic variants and other 43 intronic polymorphisms within AS3MT and four additional genes. Genetic association analysis showed that all linked polymorphisms in this region except one were significantly associated with higher arsenic SME. The existence of this long region of LD associated with arsenic SME underscores the complexity of association studies involving any of these linked polymorphisms since there is no certainty of which polymorphism or gene is the causative of the association. In addition, a strong positive association between body mass index (BMI) and arsenic SME was observed in females but not in males. This association was replicated in two independently recruited populations of adult women. Moreover a unique finding of this study is the association between higher genetically estimated indigenous American (AME) ancestry and increased arsenic SME in this ancestrally admixed Mexican population. These results establish the importance of genetic and phenotypic factors in the efficiency of arsenic secondary methylation. Furthermore this study has identified several arsenic-associated risk factors that should be carefully considered in future studies seeking to better understand disease susceptibility in arsenic-exposed populations.