Title: Muscle imbalances in white water canoeing measured by TMG Aims: The aim of this paper was to select the endangered muscle groups, to identify possible imbalances using tensiomyograph (TMG 100) and to define hypotheses about the influence of training load in water slalom on the development of imbalances in the selected specific muscle groups. Methods: This work has a character of a qualitative research. Specifically, 6 case studies were carried out, appended by control measurements after one year, in which emphasis was placed on the detection of characteristic muscle imbalances that could arise as a result of specific training activities in water slalom. To measure these muscle imbalances, we used tensiomyograph (TMG 100). Results: Among the measured participants, we found that during a one-year training cycle, significant changes in the functionality of individual muscle groups have occurred. The most endangered groups, ie the groups with the most significant changes, included BB, DEL, LD and TRM. There have been also notable changes in the functional symmetry of the elbow joint, where 4 out of 5 participants have deteriorated during the year. It was also found, that women might be more prone to imbalances as an effect of the specific activity compared to men. Key words: white water...

Title: Nutrition monitoring in top Czech Republic women white water slalom athletes in the race period of the season. Aim of the study: Comparison of actual quantitative and qualitative composition of the diet in the Czech water slalom paddlers (women) in the racing period to daily recommended standards for the population group of athletes with a corresponding energy output. Using the results, create both general and individual recommendations and assess the need for the use of supplements in the diet of water slalom athletes. Methods: The thesis is a case study and it is a kind of qualitative research. For our study we chose two main methods. Prospective study method and the method of interview. To determine the total daily energy intake and diet quality inventorial analysis of the four- day dietary record of the respondents was used. For comparison with the standards, the data were subsequently processed by standardized software applications of database functions MS Excel (Vilikus a kol., 2002) and accompanied by a critical commentary. To survey the data concerning use of food supplements has been used a method in which athletes respond to questions asked. The data were assessed in writing and graphically. Results: Our study shows and critically comment on the differences between recommended and...

<p>The purpose of this diploma work was to investigate the problem of insufficient fibre recovery in the dissolved air flotation-cell at the new thermomechanical pulping-line at Braviken Paper Mill. An investigation of the effect of process parameters on the removal efficiency in the micro-flotation process was undertaken.</p><p>The experiments were carried out for two setups at the Noss pilot plant with a small-scale flotation unit. Factorial design helped plan the experiments and four factors were controlled; temperature, fibre-size distribution, water quality and feed concentration. Three samples, feed, overflow and filtrate, were taken from each experiment and concentration measurements were made. The results were analyzed using the software MODDE.</p><p>The results from showed an influence from the fibre-size distribution. To see if the fibre-size distribution really had an effect on the results, follow-up experiments were carried out. These experiments showed no influence from temperature, fibre-size distribution or water quality. This concludes that none of those three factors influenced the results significantly.</p><p>Additional experiments were done to examine the influence from concentration and fibre-size distribution on the flotation efficiency and these showed an influence from the feed concentration. When increasing the feed concentration the efficiency of the flotation process decreased.</p>

The purpose of this diploma work was to investigate the problem of insufficient fibre recovery in the dissolved air flotation-cell at the new thermomechanical pulping-line at Braviken Paper Mill. An investigation of the effect of process parameters on the removal efficiency in the micro-flotation process was undertaken. The experiments were carried out for two setups at the Noss pilot plant with a small-scale flotation unit. Factorial design helped plan the experiments and four factors were controlled; temperature, fibre-size distribution, water quality and feed concentration. Three samples, feed, overflow and filtrate, were taken from each experiment and concentration measurements were made. The results were analyzed using the software MODDE. The results from showed an influence from the fibre-size distribution. To see if the fibre-size distribution really had an effect on the results, follow-up experiments were carried out. These experiments showed no influence from temperature, fibre-size distribution or water quality. This concludes that none of those three factors influenced the results significantly. Additional experiments were done to examine the influence from concentration and fibre-size distribution on the flotation efficiency and these showed an influence from the feed concentration. When increasing the feed concentration the efficiency of the flotation process decreased.

Thesis (Ph. D.)--University of Connecticut, 2003. / Includes bibliographical references (leaves 104-112). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

Thesis (Ph. D.)--University of Connecticut, 2003. / Includes bibliographical references (leaves 104-112).

Title: Performance aspects in white water slalom Aim The study is a summary of articles published between the years 2006 - 2011. The aim is to present the researched issue of top - level sport in the example of white water slalom. Articles are arranged in accordance to the factors of sport performance. The first thematically include articles concerned with conditioning factors of performance, then continue articles analyzing somatic factors and at the end there are listed papers on psychological preparation and psychological factors. Methods These articles were mostly case studies which have been conducted on a sample of national team athletes or top athletes in the Czech Republic. The exception is the articles 5.3 and 5.4, which are descriptive studies on a large sample of top world class athletes. The studies used a survey and testing. Results The individual articles addressed the importance of performance indicators in white water slalom, applied to the selected factors. Results of studies are always subjected to deliberately selected files of athletes, top-level competitors in the Czech Republic and abroad. The results, therefore, cannot be generalized and applied to a population of white water slalom racers, but can show some patterns that could be accepted in practice.

Orientadores: Jose Vicente Hallak D'Angelo, Roger Josef Zem / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica / Made available in DSpace on 2018-08-06T20:34:11Z (GMT). No. of bitstreams: 1 Andrade_AlexandreAugustode_M.pdf: 1431250 bytes, checksum: 071f09bc36a20d1058f5dcaef7eb20e6 (MD5) Previous issue date: 2006 / Resumo: Na indústria de papel e celulose há uma grande preocupação sobre o consumo crescente de água fresca e também quanto ao volume de efluentes a serem tratados, pois estão estritamente ligados às limitações de expansões do processo, devido a restrições ambientais e capacidade da planta. O objetivo principal deste trabalho é estudar a viabilidade técnica de se usar o efluente gerado nas máquinas de papel, água branca, nas prensas de lavagem do branqueamento, visando uma redução no consumo de água fresca nestes equipamentos. Foi realizado um estudo de caso do processo de produção da Ripasa S.A. Celulose e Papel, uma indústria de papel e celulose localizada em Limeira (Estado de São Paulo). Nesse processo é gerada uma taxa de cerca de 700 m3/h de água branca e devido às propriedades físico-químicas deste efluente, especialmente seu conteúdo de matéria orgânica e sua alta dureza, não é possível a reutilização total dessa água na etapa de branqueamento sem causar problemas operacionais como incrustações em tubos e entupimento das telas. Assim, neste trabalho, um balanço de massa na unidade de branqueamento da Ripasa foi desenvolvido em uma planilha eletrônica, para avaliar a possibilidade de reduzir o consumo de água fresca usando-se uma fração do volume da água branca para a lavagem da polpa nessa etapa do processo. Para tanto algumas propriedades físico-químicas da corrente de água branca e de outras correntes do processo de branqueamento foram determinadas, tendo-se como a mais importante a análise de matéria orgânica. As concentrações máximas de alguns elementos não processáveis (NPE) como Si, Ca, Mn e Fe também foram determinados para estabelecer alguns parâmetros para permitir essa integração de processo, considerando-as como restrições operacionais. Os resultados obtidos mostraram que é possível reduzir aproximadamente 13% do consumo de água fresca, tendose como principais restrições a concentração de matéria orgânica seguida da concentração de Ca presentes na água branca. É importante dizer que esta integração de processo não só contribui para a redução no consumo de água fresca, mas também para a redução do volume dos efluentes gerados no processo / Abstract: In pulp and paper mills there is a great concern about the increasing consumption of fresh water and also the great volume of effluents that need to be treated, since they are represent limitations to new process expansions, due to environment restrictions and plant capacity. The aim of this work is to study the technical viability of using the effluent stream generated in the paper machines, called white water, in the washing presses of bleaching stages, seeking for a reduction in the consumption of fresh water in these equipments. A case study was performed, using industrial data of a real pulp and paper mil!. In its process, white water is produced at a rate of about 700 m3/h and the physical-chemical properties of this effluent, mainly its organic material content and hardness, do not allow its complete reuse in the bleaching process, without causing operational problems like fouling in tubes and clogging in the screens. So, in this work, a material balance of the bleaching unit was developed in an electronic spreadsheet in order to evaluate the possibility to reduce the consumption of fresh water in the washing presses, using a portion of the white water effluent stream. To accomplish the objective proposed, some physical-chemical properties of white water stream and other process streams were determined experimentally, and the most important one is organic material analysis. The maximum concentration of some non-process elements like Si, Ca, Mn and Fe that could accumulate in the process were also determined in order to establish some parameters to perform process integration, considering these concentrations as operational restrictions. The results obtained have shown that it is possible to reduce approximately 13% of fresh water consumption and the main restrictions to this reduction is organic material content and concentration of Ca in white water stream. It is also important to say that this process integration not only contributes to reduce fresh water consumption but also helps to reduce the volume of effluents generated in the process / Mestrado / Sistemas de Processos Quimicos e Informatica / Mestre em Engenharia Química

Abstract Gas removal from the papermaking process is currently a standard practice, whereas purification of the internal water circulation has become common only recently. Both unit processes have progressed greatly during recent decades and new concepts are constantly being developed. The aim of this thesis was to analyse the efficiency and applicability of a channel flow design introduced by Metso for passive white water deaeration and to study the dynamics of passive bubbly gas removal. In addition, separation of the detrimental process water components by selective flotation during deaeration was studied to add further functionality to the channel flow design. Turbulent mixing at the flow discharge and the consequent air entrainment were seen to limit the gas separation efficiency. Also, the properties of different white waters notably affect their deaeration through viscous forces, the concentration of surface active components and bubble-particle interactions. Thus similar levels of gas separation cannot be achieved with all process waters. The analysis showed that the drag of small microbubbles is mostly caused by hydrophobic contamination and the dispersed particles that readily attach to the bubbles. Correlations were derived based on experimental data to provide new information on the drag force experienced by small bubbles in white waters. Chemically unaided flotation of white water in the channel flow was shown to be efficient in separating hydrophobic contaminants that have adverse effects on paper machine production and product quality. Both good reductions in contaminant content and high selectivity in their removal were achieved. Channel flow with an overflow can be considered well suited for the first stage of froth separation, while further treatment of the channel flow reject may consist of a secondary flotation or other process that enables the recirculation of fines and fillers. Although a certain level of losses of fines and fillers must be expected, substantial fraction of these solid components can be returned to the process stream. The proposed multifunctional process, channel flow deaeration and frothing of white water, was seen to be straightforward, economical and feasible while also providing benefits in terms of total process efficiency that are not delivered by any current process scheme. The experimental parameters presented here regarding bubble dynamics and flotation efficiency can be used to achieve better models of these processes.

Title: Performance aspects in white water slalom Aim The study is a summary of articles published between the years 2006 - 2011. The aim is to present the researched issue of top - level sport in the example of white water slalom. Articles are arranged in accordance to the factors of sport performance. The first thematically include articles concerned with conditioning factors of performance, then continue articles analyzing somatic factors and at the end there are listed papers on psychological preparation and psychological factors. Methods These articles were mostly case studies which have been conducted on a sample of national team athletes or top athletes in the Czech Republic. The exception is the articles 5.3 and 5.4, which are descriptive studies on a large sample of top world class athletes. The studies used a survey and testing. Results The individual articles addressed the importance of performance indicators in white water slalom, applied to the selected factors. Results of studies are always subjected to deliberately selected files of athletes, top-level competitors in the Czech Republic and abroad. The results, therefore, cannot be generalized and applied to a population of white water slalom racers, but can show some patterns that could be accepted in practice.