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Peculiarities of the atmospheric precipitation regime in medium and high altitudes of the Czechia and Slovakia
Ptáček, Tomáš ; Sládek, Ivan (advisor) ; Sehnalová, Petra (referee)
Peculiarities of the atmospheric precipitation regime in medium and high altitudes of the Czechia and Slovakia Abstract The thesis deals with the question of rise in precipitation during winter period in mountain and submontane areas of the former Czechoslovakia. This increase comes out as circumstantial maximum of precipitation in winter period. Some stations have even recorded higher precipitation totals during colder half-years than during warmer half-years. The areas, which experience this phenomenon, differ in this matter from the continental nature of the precipitation in the lower altitudes. The main part of the thesis consists in a background research of the existing expert literature on the topic of increased incidence of winter precipitation, which hasn't been sufficiently discussed so far. The other substantial part of the thesis forms personal research. The research has been made at three stations in the Jizera mountains, i.e. in the area, where the increased incidence of winter precipitation comes out at most. There have been encountered some atmospheric situations triggering extreme precipitation totals in winter, which can't be found to such extent in lower altitudes. The windward of the Jizera mountains combined with the dominant west streaming during winter period is to be regarded as the...
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Meteorological factors influencing risk of forest fires in the Czech Republic
Sehnalová, Petra ; Sládek, Ivan (advisor) ; Francl, Roman (referee)
The aim of my work is to clarify the meteorological conditions which lead to forest fires and create a formula that would assessed the fire hazard on the basis of forecast of meteorological parameters. Main parts of this work are: definition and conditions of the emergence of forest fires, division of forest fires, methods of disposal of fires, methods and ways of predicting and detecting forest fires and the occurrence and areal extent of forest fires in the world and in our country, influence of drought and global warming. I evaluated forest fires in terms of meteorological factors (average daily temperature, total daily precipitation - processed by method of effective precipitation and wind speed) in the Chomutov distrikt (from 3 climatological stations) from 1998 to 2008. First I analyzed impact of individual meteorological parameters on the occurrence of forest fires during last 11 years. I drew up several formulas for calculating the hazard of fires. The formula with the best results I have named Fire Hazard Index and set the limits, i.e. the degree of harard. The Fire Hazard Index is meteorological index and it does not work with the factors of vegetation, infrastructure and topography. Therefore Fire Hazard Index would be a suitable part of the overall General Hazard Index, which would take into...
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Vlastnosti hydrokoloidů jako rosolujících prostředů pro pomazánky
Sehnalová, Petra
The work collect teoretical and experimental information for studying of consistence gel artifacts from fruit puree. Starting semi-product was selected apple puree and experiments was with gelatinational additives agar and sodium alginat. Experiments manifest, that these hydrocolloids are possible to use this way. There are good in consistence of final product, in taste, colour, smell, slice and knife. Enquiring hydrocolloids don´t require neither extra sugar content nor acids or technological pectin compons, which is naturally present in fruit base material in amount of it´s native degradation. According the experiments, it is possible to create tasting gelling fruit product with only one added substance in concentration 4 to 5 % of agar or in concetration around 1% of alginat products.
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Peculiarities of the atmospheric precipitation regime in medium and high altitudes of the Czechia and Slovakia
Ptáček, Tomáš ; Sehnalová, Petra (referee) ; Sládek, Ivan (advisor)
Peculiarities of the atmospheric precipitation regime in medium and high altitudes of the Czechia and Slovakia Abstract The thesis deals with the question of rise in precipitation during winter period in mountain and submontane areas of the former Czechoslovakia. This increase comes out as circumstantial maximum of precipitation in winter period. Some stations have even recorded higher precipitation totals during colder half-years than during warmer half-years. The areas, which experience this phenomenon, differ in this matter from the continental nature of the precipitation in the lower altitudes. The main part of the thesis consists in a background research of the existing expert literature on the topic of increased incidence of winter precipitation, which hasn't been sufficiently discussed so far. The other substantial part of the thesis forms personal research. The research has been made at three stations in the Jizera mountains, i.e. in the area, where the increased incidence of winter precipitation comes out at most. There have been encountered some atmospheric situations triggering extreme precipitation totals in winter, which can't be found to such extent in lower altitudes. The windward of the Jizera mountains combined with the dominant west streaming during winter period is to be regarded as the...
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Meteorological factors influencing risk of forest fires in the Czech Republic
Sehnalová, Petra ; Francl, Roman (referee) ; Sládek, Ivan (advisor)
The aim of my work is to clarify the meteorological conditions which lead to forest fires and create a formula that would assessed the fire hazard on the basis of forecast of meteorological parameters. Main parts of this work are: definition and conditions of the emergence of forest fires, division of forest fires, methods of disposal of fires, methods and ways of predicting and detecting forest fires and the occurrence and areal extent of forest fires in the world and in our country, influence of drought and global warming. I evaluated forest fires in terms of meteorological factors (average daily temperature, total daily precipitation - processed by method of effective precipitation and wind speed) in the Chomutov distrikt (from 3 climatological stations) from 1998 to 2008. First I analyzed impact of individual meteorological parameters on the occurrence of forest fires during last 11 years. I drew up several formulas for calculating the hazard of fires. The formula with the best results I have named Fire Hazard Index and set the limits, i.e. the degree of harard. The Fire Hazard Index is meteorological index and it does not work with the factors of vegetation, infrastructure and topography. Therefore Fire Hazard Index would be a suitable part of the overall General Hazard Index, which would take into...
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