The thesis focused on description and characteristics of spring wheat and barley and their life cycles. Thesis deals with the issue of very dangerous weed plants and deals with the possibilities of their regulation by using herbicidal preparations in the growth spring cereals. Weeds are problematic plants that negatively affect the quality of production and also the economy of cultivation. Part of the thesis is the evaluation of a small plot experiment, which was performed in the crop of the spring barley on the land of the company AGRO Dolní Bukovsko in the cadastral area of the village Sedlíkovice in the direction (of Veselí nad Lužnicí) and in the spring wheat on the land of the above mentioned company in the cadastral territory of the municipality of Radonice in year 2017. Results of weed frequency and economic evaluation of the experiment are presented in tables and graphs.

Prymnesium parvum Carter, a haptophyte species capable of forming harmful algal blooms (HABs), has been identified in fresh and brackish water habitats worldwide. In Texas, P. parvum blooms have diminished local community revenues from losses to tourism, fishing, and hatchery production. In this thesis, P. parvum dynamics were studied using in-situ microcosm experiments at Lake Possum Kingdom, Texas during three seasons (fall, winter, spring) in 2004-2005. Specifically, nutrient additions were used to test the hypothesis that increased nutrient levels would not enhance P. parvum's ability to invade phytoplankton communities. In addition to full nutrient additions to levels of f/2 media, other treatments included nutrient additions deficient in either nitrogen (N) or phosphorus (P). Additionally, barley straw extract was tested as a growth inhibitor to prevent P. parvum blooms. Furthermore, P. parvum initial population density was examined to test the hypothesis that increased initial populations could promote an increase in P. parvum population densities. Findings indicated that P. parvum populations in Lake Possum Kingdom would not likely gain a selective advantage over other species when inorganic nutrients (nitrogen and phosphorus) were not limiting. P. parvum did, however, gain an advantage during both N- and P-limited conditions as indicated by toxicity, cell concentrations, and bulk phytoplankton community shifts. Furthermore, P. parvum blooms in Lake Possum Kingdom would likely not be inhibited by barley straw extract application. Initial population densities affected the final population density, but only when initial populations were low. A method to quickly and accurately detect the presence of P. parvum is needed due to P. parvum's potential to cause toxic and lethal blooms. This thesis tested whether P. parvum photopigments are conservative regardless of growth conditions and could be used to quantify the relative abundance of P. parvum in mixed community samples. If biomarker pigments are conservative, then an optimized version of CHEMTAX could be employed as an alternative diagnostic tool to microscopy for enumeration of P. parvum. However, P. parvum pigments in the Texas strain were not conservative throughout the growth cycle and therefore may not be a reliable indicator of cell abundance.

A group G is called a barely transitive group if it acts transitively and faithfully on an infinite set and every orbit of every proper subgroup is finite. A subgroup H of a group G is called a permutable subgroup, if H commutes with every subgroup of G. We showed that if an infinitely generated barely transitive group G has a permutable point stabilizer, then G is locally finite. We proved that if a barely transitive group G has an abelian point stabilizer H, then G is isomorphic to one of the followings: (i) G is a metabelian locally finite p-group, (ii) G is a finitely generated quasi-finite group (in particular H is finite), (iii) G is a finitely generated group with a maximal normal subgroup N where N is a locally finite metabelian group. In particular, G=N is a quasi-finite simple group. In all of the three cases, G is periodic.

Prymnesium parvum Carter, a haptophyte species capable of forming harmful algal blooms (HABs), has been identified in fresh and brackish water habitats worldwide. In Texas, P. parvum blooms have diminished local community revenues from losses to tourism, fishing, and hatchery production. In this thesis, P. parvum dynamics were studied using in-situ microcosm experiments at Lake Possum Kingdom, Texas during three seasons (fall, winter, spring) in 2004-2005. Specifically, nutrient additions were used to test the hypothesis that increased nutrient levels would not enhance P. parvum's ability to invade phytoplankton communities. In addition to full nutrient additions to levels of f/2 media, other treatments included nutrient additions deficient in either nitrogen (N) or phosphorus (P). Additionally, barley straw extract was tested as a growth inhibitor to prevent P. parvum blooms. Furthermore, P. parvum initial population density was examined to test the hypothesis that increased initial populations could promote an increase in P. parvum population densities. Findings indicated that P. parvum populations in Lake Possum Kingdom would not likely gain a selective advantage over other species when inorganic nutrients (nitrogen and phosphorus) were not limiting. P. parvum did, however, gain an advantage during both N- and P-limited conditions as indicated by toxicity, cell concentrations, and bulk phytoplankton community shifts. Furthermore, P. parvum blooms in Lake Possum Kingdom would likely not be inhibited by barley straw extract application. Initial population densities affected the final population density, but only when initial populations were low. A method to quickly and accurately detect the presence of P. parvum is needed due to P. parvum's potential to cause toxic and lethal blooms. This thesis tested whether P. parvum photopigments are conservative regardless of growth conditions and could be used to quantify the relative abundance of P. parvum in mixed community samples. If biomarker pigments are conservative, then an optimized version of CHEMTAX could be employed as an alternative diagnostic tool to microscopy for enumeration of P. parvum. However, P. parvum pigments in the Texas strain were not conservative throughout the growth cycle and therefore may not be a reliable indicator of cell abundance.

Title: Influence of Young Barley and Chlorella Pyrenoidosa on Regeneration in Bodybuilding and Fitness Athletes Target: The aim of this work is to determine whether the use of Chlorella Pyrenoidosa (CHP) and Young Barley (MJ) products have an effect on muscle regeneration in strength athletes in the fields of bodybuilding and fitness, specifically addressing the level of the creatine kinase (CK) enzyme after strength training. Additionally, it is to find out whether the use of CHP and JM affects the quality of life of athletes. Methods: This diploma thesis is a qualitative correlation study. The theoretical part of the work was processed on the basis of information from books and electronic sources in Czech and English. For the practical part, 5 probands from the bodybuilding and fitness sports sector were purposefully selected. The group underwent blood sampling analyzed with a BECKMAN COULTRE DxC 700 analyzer for CK levels. Data on the impact of Green Food on quality of life were obtained using a record sheet entitled: "Daily Subjective Records". Statistical analysis of the Daily Subjective Record data was performed by paired t-test at the significance level of α ≤ 0.05 and subsequently graphed. Results: We found an overall linear reduction in serum CK levels in 3/5 of the probands.The 24 hour...

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The aim of this qualitative interpretive research was to explore the experiences of HIV counsellors and how these experiences influence the counsellors' psychological wellbeing. The complexities of the context within which HIV pre and post test counselling occurs form the day-to-day real ity of barely trained volunteer counsellors whose task it is to counsel, inform and educate people at grass roots concerning HIV. The guiding question of the current research pertained to the experience of HIV counselors regarding the influence of their work on their own well-being. A case study design was used. In depth interviews were conducted with nine Sotho speaking HIV counselors working in primary healthcare clinics in the Sedibeng region of Gauteng. Additional data was collected through observation. Data was initially coded, using axial coding; this was followed by thematic analysis. The focus was .on the psychological well-being of the volunteer HIV counsellors. The data indicated that the participants were not overwhelmed by the many stressors of their challenging occupations. They succeeded in developing their own ways of stress relief especially through practising their spiritual beliefs and other means like participating in community activities and meaningful relationships of significant other. They experienced personal growth and empowerment in general, but especially in the field of health and sexuality. The female participants were increasingly able to negotiate safer sex. Participants' lives were enriched through amongst others the regard they received from their communities, and being in a position to give information and advice that they gained from the training and exposure to information. The participants experienced feelings of self-worth in that they were able to contribute to their communities and thereby adding meaning to their own existence. It became clear that their character strengths such as wisdom, courage, humanity, justice and transcendence enabled them to function and grow in their difficult situation. The research highlighted that the inner strengths and virtues of the volunteer counsellors enable them to persist, in challenging work conditions and socio-economic circumstances. Difficulties facing volunteer HIV counsellors that became clear are the lack of support and recognition they have to contend with. It is therefore recommended that more attention should be given by the relevant stakeholders to strengthen the support and to make more resources available to them. / Thesis (M.A. (Psychology))--North-West University, Vaal Triangle Campus, 2010.

The aim of this qualitative interpretive research was to explore the experiences of HIV counsellors and how these experiences influence the counsellors' psychological wellbeing. The complexities of the context within which HIV pre and post test counselling occurs form the day-to-day real ity of barely trained volunteer counsellors whose task it is to counsel, inform and educate people at grass roots concerning HIV. The guiding question of the current research pertained to the experience of HIV counselors regarding the influence of their work on their own well-being. A case study design was used. In depth interviews were conducted with nine Sotho speaking HIV counselors working in primary healthcare clinics in the Sedibeng region of Gauteng. Additional data was collected through observation. Data was initially coded, using axial coding; this was followed by thematic analysis. The focus was .on the psychological well-being of the volunteer HIV counsellors. The data indicated that the participants were not overwhelmed by the many stressors of their challenging occupations. They succeeded in developing their own ways of stress relief especially through practising their spiritual beliefs and other means like participating in community activities and meaningful relationships of significant other. They experienced personal growth and empowerment in general, but especially in the field of health and sexuality. The female participants were increasingly able to negotiate safer sex. Participants' lives were enriched through amongst others the regard they received from their communities, and being in a position to give information and advice that they gained from the training and exposure to information. The participants experienced feelings of self-worth in that they were able to contribute to their communities and thereby adding meaning to their own existence. It became clear that their character strengths such as wisdom, courage, humanity, justice and transcendence enabled them to function and grow in their difficult situation. The research highlighted that the inner strengths and virtues of the volunteer counsellors enable them to persist, in challenging work conditions and socio-economic circumstances. Difficulties facing volunteer HIV counsellors that became clear are the lack of support and recognition they have to contend with. It is therefore recommended that more attention should be given by the relevant stakeholders to strengthen the support and to make more resources available to them. / Thesis (M.A. (Psychology))--North-West University, Vaal Triangle Campus, 2010.