National Repository of Grey Literature 25 records found  previous11 - 20next  jump to record: Search took 0.01 seconds. 
The Use of Methods of The Project Management in Practice
Kucharíková, Dominika ; Kruljacová, Anna (referee) ; Smolíková, Lenka (advisor)
This bachelor thesis is focused on the use of methods of project management in practice. The methods are applied to internal project of expansion to the Polish market of the company mypinbuttons s.r.o. Theoretical part describes project management in theory and then is used in the practical part. Analytic part describes the company, its strengths, weaknesses and contains analysis of the Polish market. The practical part is devoted to the project itself.
Factors influencing diurnal activity of crayfish and its seasonality
Plasová, Kateřina ; Petrusek, Adam (advisor) ; Buřič, Miloš (referee)
Crayfish is mainly but not exclusively a nocturnal animal. The crayfish aktivity is taxon specific and can be further affected by various factors. The aim of this thesis is to create an overview of factors affecting the activity and to summarize their impact. Factors can be divided into those influencing daily activity and those influencing seasonal behaviour. This thesis focuses on discussing different reactions to the factors and its intensity by individual species. Insufficient data covering activity during the winter season offers an opportunity for further research. Key words: crayfish; daily activity; abiotic factors; biotic factors; seasonality
Vliv triazinových pesticidů a jejich metabolitů na necílové vodní organizmy
KOUTNIK, Dalibor
Pesticides used in agro-ecosystems and forests enter aquatic environments such as streams, rivers, and lakes if applied in adjacent areas or if an accidental spill occurs. For the studies, we chose the early life stages of common carp (Cyprinus carpio L.) and marbled crayfish (Procambarus fallax f. virginalis). In selected organisms, we observed long-term effect of triazine herbicides (prometryne, terbuthylazine, metribuzine) and their metabolites (terbuthylazine-desethyl and tebuthylazine-2-hydroxy) in concentrations commonly occurring in Czech rivers. The first part is about monitoring the effects of triazines (prometryne, terbuthylazine) on the early development stages of carp and marble crayfish. Subchronic prometryne exposure of early-life stages of common carp at concentrations of 1 200 and 4 000 ?g/L affected their survival, growth rate, early ontogeny, and histology. Terbuthylazine in concentration 1 400 and 3 000 ?g/L caused significant decrease of mass, total length, delayed in development and cause of alternation of tubular system of caudal kidney of carp. Prometryne in concentration 144, 1 444 and 4 320 ?g/L caused decrease of weight, specific growth rates and caused histopathological changes in gill of crayfish. Moreover concentration 4 320 ?g/L of prometryne caused delay in ontogenetic development of crayfish. Second part of the work has included effects of low concentrations of metabolites (terbuthylazine-desethyl and tebuthylazine-2-hydroxy) on the early development stages of carp and marble crayfish. Chronic terbuthylazine-desethyl exposure in concentrations 180, 900, and 1 800 ?g/L affected growth, ontogenetic development, and the antioxidant system and caused pathological changes in the caudal kidney of early life stages of carp. Chronic terbuthylazine-2-hydroxy exposure in concentrations 2.9, 70, 1 400 and 3 500 ?g/L caused decreased of total superoxide dismutase activity of early life stages of carp. Moreover concentration 1 400 and 3 500 ?g/L of terbuthylazine-2-hydroxy caused delay in ontogenetic development and pathological changes in the caudal kidney of carp. Chronic terbuthylazine-2-hydroxy exposure in concentrations up 75 ?g/l affected growth, ontogenetic development, antioxidant system, caused oxidative stress and pathological changes in hepatopancreas of early life stages of marbled crayfish. The last part of our study examined the effect of metribuzine on signal crayfish (Pacifastacus leniusculus Dana). Crayfish were exposed to metribuzine concentrations of 0.52 ?g/L and 3.06 mg/L for 30 days and a 30-day depuration period. In the thiobarbituric acid reactive substances, superoxide dismutase, and catalase were observed differences in all examined tissues (gill, muscle, hepatopancreas) compared to the control group. Differences from control were observed in glutathione reductase activity in hepatopancreas after 10 days for both exposure concentrations and after 30 days at 3.06 mg/L. Histological examination revealed extensive focal autolytic disintegration of tubular epithelium in hepatopancreas of crayfish exposed to metribuzin. These studies provided important results for the evaluation of long-term impact and effect of (prometryne, terbuthylazine and metribuzine) and their metabolites (terbuthylazine-desethyl and tebuthylazine-2-hydroxy) on the water non-target organisms, even in real concentrations founded in surface waters.
Use of environmental DNA for detection of aquatic invertebrates
Bílek, Marek ; Petrusek, Adam (advisor) ; Černý, Martin (referee)
Environmental DNA is released genetical information from the individual to the environment. Especially in the aquatic environment, the amount of detectable DNA is sufficient to prove or refute the presence of a target organism. The method of taking samples from an aquatic environment and working with DNA is constantly evolving and bringing new insights. Especially in the area of aquatic vertebrates, very good results are found. Especially in actual researches results often correspond to reality more than traditional methods of capture. In contrast, research of an aquatic invertebrates by detection of eDNA is overlooked, especially because of eDNA production by invertebrates, which is generally much lowerthan fish andamphibians production. In this case the largest amount of eDNA is released in the form of mucus. In this work I focus on properties of eDNA in the aquatic environment, biotic and abiotic factors that affect the durability of detectable DNA. I also mention the production of DNA of aquatic invertebrates, the possibilities of collection and the laboratory procedures of its processing, I compare the different approaches of the scientific teams in the referenced research and draw attention to the most frequent problems. At the end of the thesis I compare the results of the current research...
Prediction of invasive marbled crayfish (Procambarus fallax f. virginalis) global spread
Nováková, Pavla ; Patoka, Jiří (advisor) ; Antonín, Antonín (referee)
Biological invasions are currently a global problem. They often cause a loss of biodiversity and severely disrupt the balance of entire ecosystems. One of the most dangerous among the many species of crayfish known to be invasive is the marbled crayfish or Marmorkrebs (Procambarus fallax f. virginalis Martin et al., 2010). The marbled crayfish is a major ornamental crayfish species. It is a known vector of infectious crayfish plague, which is lethal for crayfish species of non-North American origin. Marbled crayfish is also very tolerant to different water temperatures. The most important feature making it an especially dangerous invasive species, is the way of its reproduction. Marbled crayfish reproduces via apomictic parthenogenesis. Therefore, only females are able to reproduce and males of this taxon has not been recorded. This crayfish is characterised by a very quick maturation and extremely rapid growth. Even though some established populations of this taxon in the wild have already been recorded, and probability of the establishment in selected regions was evaluated, no predictions for expansion on a global scale have been conducted. The program CLIMATCH was used in this thesis to match the climate conditions between the source area (distribution of established populations of marbled crayfish in the wild) and target areas (all continents excluding Antarctica) based on temperatures during the coldest and warmest quarters of the year. The results showed that marbled crayfish can probably survive and reproduce in even colder regions of the temperate zone. The presented findings additionally indicate that temperate zones contain slightly higher potentially suitable regions than in the case of tropics. There are temperature conditions most suitable for the survival and reproduction of the marbled crayfish within Europe in comparison of the rest of the world; and the least favourable temperature conditions are within Australia. The marbled crayfish introduction and ability to survive and reproduce in the wild is a potential threat to native biota and entire ecosystems on all continents assessed. Therefore, it is strongly recommended that the breeding of and the pet trade with this crayfish should be regulated by policymakers and wildlife managers by improvement of legislative restrictions (such as in the EU) and intensive future education of general public. It is obvious that the monitoring of invasive crayfish species might be continuous. Nevertheless, the most important step is to make producers and hobbyists aware of the risks related with marbled crayfish.
Phylogeography and genetic variation of benthic crustaceans in European inland waters
Pešek, Pavel ; Petrusek, Adam (advisor) ; Sacherová, Veronika (referee)
This thesis summarises published information about geographic distribution of genealogical lineages and genetic variability of benthic crustaceans of European continental waters, and evaluates the historical factors that affected their distribution. it is focused mainly on species for which multiple or in-depth studies have been published. A particular attention is given to crayfish of the genus Austropotamobius. Present distribution of genealogical lineages has been affected by changes in connectedness and availability of aquatic habitats. Species lineages often split in consequence to geological and climatic processes during the Tertiary, as exemplified on species complexes of Austropotamobius crayfish, species lineages of the amphipod Gammarus fossarum species complex, and the isopod Asellus aquaticus. The distribution of intraspecific lineages has been strongly affected by Quaternary cycles of glaciation, which not only destroyed many habitats by moving glaciers but also created new colonisation routes. Such routes were peri-glacial lakes, which had been used by Gammarus lacustris, or retreat of sea level, which enabled white-clawed crayfish to colonise England, and a freshwater crab to colonise Italy. Changes in sea levels are also the likely reasons for colonisation of continental waters by the...
Project for Marketing Support of Business Development
Vašourek, František ; Slavíková, Sabina (referee) ; Juřica, Pavel (advisor)
This bachelor thesis, focused on the management and planning of the project, is engaged in organizing catering on the Faculty of Electrical Engineering and Communication in Brno at University of Technology, all is focused on students. The goal of this project is to organize a three-day catering on this faculty above, with the aim to promote coffee of company KOFI-KOFI Service Ltd.
The red swamp crayfish Procambarus clarkii (Grirard, 1852) and his burrowing ability
PŘECH, Jiří
In Europe, interactions with non-indigenous crayfish species (NICS) pose a great threat to those indigenous crayfish species (ICS). Red swamp crayfish (Procambarus clarkii) is a typical example of an invasive species that threatens European ICS and has superior ability to construct burrows. This paper contains a review on red swamp crayfish with emphasis on its ability to construct burrows. Also a laboratory experiment evaluating the effects of presence/absence of claws on the burrowing ability in this species had been performed.
The effect of metabolite terbuthylazine-2-hydroxy on early life stages of marbled crayfish
PEŘINOVÁ, Eliška
Terbuthylazine belongs to the group of pesticides on triazine-based for use in agriculture as herbicides. Terbuthylazine-2-hydroxy is the main metabolite of terbuthylazine. The aim of this study was evaluate the effect of terbuthylazine-2-hydroxy on mortality, growth, occurrence the deformations and the development of early life stages, and levels of oxidative stress, assess the activity of antioxidant enzymes of marbled crayfish (Procambarus fallax f. virginalis) and also augment data for assessing the impact of this metabolite on the environment. For assess of effect of this metabolite was used embryo larval toxicity test with crayfish. The effect of terbuthylazine-2-hydroxy was evaluated in four concentrations (0.75 g.l-1, 75 g.l-1, 375 g.l-1 and 750 g.l-1) for 62 days. Terbuthylazine-2-hydroxy in concentrations 375 g.l-1 and 750 g.l-1 caused decrease of activity superoxide dismutase (SOD) and the levels lipid peroxidation (measured as TBARS) and inhibition of growth. Inhibition of growth was also observed in the group exposed to 75 g.l-1 of terbuthylazine-2-hydroxy. Additionally, there was delay in ontogenetic development of crayfish exposed to concentration 750 g.l-1. The real tested concentration of 75 g.l-1 terbuthylazine-2-hydroxy had no effect to monitored indices in the early life stages of marbled crayfish. Terbuthylazine-2-hydroxy caused oxidative damage of cellular lipids and proteins, changes in antioxidant activity, reduction of growth, delay in ontogenetic development of marbled crayfish.
Information System Design
Šmýd, Radek ; Hlucháňová, Alexandra (referee) ; Koch, Miloš (advisor)
The aim of the diploma thesis is to prepare a design of multi-level sales network information system for the company 1WAY COMPANY s.r.o. system will be designed with a maximum regard to the success of final solution and automation particular corporate processes. The work also describes company’s system requirements, implementation methods, budgeting and creating of service agreements. For the proper system functionality is needed to design a permission management included organization structure, Event-driven Process Chain and RACI responsibility matrix.

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