|
|
Impact of elevated concentration of carbon dioxide on diurnal changes of Rubisco activity and its content
Zítková, Jana ; Vítová, Eva (referee) ; Hrstka, Miroslav (advisor)
Diurnal changes of initial and total activity and content of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) under conditions of ambient (350 µmol mol-1) and elevated (E = 700 µmol mol 1) concentration CO2 were measured in needles of Norway spruce. Needles of Norway spruce were taken on 22th July in two-hours from 3:30 a. m. till 10:30 p. m. The Rubisco activity was determined by spectrophotometry, the Rubisco content was detected by SDS-PAGE. The Rubisco activity was in most samples statistically significantly lower in needles cutlivated under ambient carbon dioxide then in needles cultivated under elevated carbon dioxide. Diagrams of the Rubisco activity shows absence of night inhibitor CA1P. The Rubisco activity was directly proportional to the intensity of photosynthetically active radiation in time from 7:00 a. m. till 7:30 p. m. The Rubisco content was statistically significantly higher in needles of Norway spruce cultivated under ambient carbon dioxide than in needles cultivated under elevated CO2, which shows acclimation of the Rubisco content during long-term effect of elevated CO2 concentration.
|
|
|
Influence of elevated carbon dioxide concentration on the quality of wheat flour
Zítková, Jana ; Vránová, Dana (referee) ; Hrstka, Miroslav (advisor)
This work treats of influence of carbon dioxide increased concentration on wheat yield and quality of wheat grains and flour. It focuses above all on total content nitrogenous substances in flour, content of proteins, gluten and bake charackteristics. Generally, increased carbon dioxide concentrations cause an increase of wheat yield and decrease of total content of nitrogenous substances. Gluten content is lower and that is why the bake properties are worse too.
|
|
|
Legal regulation of residential lease with the attention to rent
Zítková, Jana ; Salač, Josef (advisor) ; Dvořák, Jan (referee)
This thesis is focused on problems related to the rental housing in the Czech Republic, which is a frequent theme of political as well as legal discussions. Czech population is separated between two sides of the dispute, landlords and tenants, in a way. I have chosen topic "Legal regulation of residential lease with the attention of rent" to familiarize myself with this actual subject. My thesis contains six chapters including the introduction and the conclusion. To understand the origin of present legal regulation of tenement relations, it is important to analyze it in a historical context. First part of the thesis therefore concentrates on the evolution of civil lease regulation, beginning from Roman law, which has put the basis of modern continental civil law, to our history shortly after the revolutionary year 1989. Chapter Three defines general grounds of the topic as international and constitutional basement of the right to abode, legal sources of current lease law and also the subject matter of legal relation of residential lease - a flat. It is necessary to remind that there isn't any general legal definition of flat in present civil law. Chapter Four is concerned with valid law and is subdivided into several parts. First subchapter describes basic terms of lease in general. Second passage explains...
|
|
|
Bioindication of road salting impact on Norway spruce (Picea abies)
Zítková, Jana ; Anděl, Petr (advisor) ; Vojar, Jiří (referee)
Road salting is one of the major negative impacts on the environment. Application of chemical salt based de-icing materials damages mostly the trees growing near the roads. Sodium and chlorine which are washed into the environment are absorbed by the surrounding vegetation and their increased concentration
has a negative impact on their health. This thesis work assesses the influence
of contamination potential on the content of sodium and chlorine in the needles
of Norway spruce (Picea abies). This tree was used for the study because
of its abundance and increased sensitivity to salinity. Study area was chosen
in the northern part of the Czech Republic in the Liberec Region in between Jablonec nad Nisou, Železný Brod and Tanvald. To indicate the potential damage caused
by road salting, the samples of 1-year-old and 2-year-old needles of Norway spruce were collected and examined for the concentration of sodium and chlorine. Also,
the site contamination potential was assessed and the health conditions of individual conifers were evaluated. The measured concentrations of elements were evaluated
based on four factors: the potential contamination sites, the health of the tree,
the distance from the road and the age of needles. Based on the results
of the evaluation, a measurement scale was designed with framework concentration values which can be used for practical assessment of the level of contamination.
|
|
|
Impact of elevated concentration of carbon dioxide on diurnal changes of Rubisco activity and its content
Zítková, Jana ; Vítová, Eva (referee) ; Hrstka, Miroslav (advisor)
Diurnal changes of initial and total activity and content of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) under conditions of ambient (350 µmol mol-1) and elevated (E = 700 µmol mol 1) concentration CO2 were measured in needles of Norway spruce. Needles of Norway spruce were taken on 22th July in two-hours from 3:30 a. m. till 10:30 p. m. The Rubisco activity was determined by spectrophotometry, the Rubisco content was detected by SDS-PAGE. The Rubisco activity was in most samples statistically significantly lower in needles cutlivated under ambient carbon dioxide then in needles cultivated under elevated carbon dioxide. Diagrams of the Rubisco activity shows absence of night inhibitor CA1P. The Rubisco activity was directly proportional to the intensity of photosynthetically active radiation in time from 7:00 a. m. till 7:30 p. m. The Rubisco content was statistically significantly higher in needles of Norway spruce cultivated under ambient carbon dioxide than in needles cultivated under elevated CO2, which shows acclimation of the Rubisco content during long-term effect of elevated CO2 concentration.
|
|
|
Influence of elevated carbon dioxide concentration on the quality of wheat flour
Zítková, Jana ; Vránová, Dana (referee) ; Hrstka, Miroslav (advisor)
This work treats of influence of carbon dioxide increased concentration on wheat yield and quality of wheat grains and flour. It focuses above all on total content nitrogenous substances in flour, content of proteins, gluten and bake charackteristics. Generally, increased carbon dioxide concentrations cause an increase of wheat yield and decrease of total content of nitrogenous substances. Gluten content is lower and that is why the bake properties are worse too.
|
|
| |
|
|
Antipredation behaviour of meercats (Suricata suricatta) in the group kept in ZOO Jihlava.
ZÍTKOVÁ, Jana
Meerkat (Suricata suricatta) is a mongoose species from South Africa. Insects are the primary food sources of their diet. Meerkat lives in groups of 2?30 individuals with a developed social structure. The group consists of a dominant pair and a different number of helpers of both sexes, which are involved in various forms of cooperation, for example care for cubs, guard service and maintaince of burrow. Meerkats are at risk of predation by mammalian predators, avian predators and snakes. One meerkat always seems to be a sentry and stands guard to keep the gang safe. When the guard senses danger they give a warning bark and the other members run for cover into their burrow. This study was done from June to September 2011 in zoo in Jihlava on a group of meerkats, which consisted of 13 individuals. There was used the method of direct observation by a scanning behaviour (behaviour sampling). Observation was specialized on sentinel behaviour. The main aim of this work was evaluate the results of observation and then compare this results with behaviour in the wild. By monitoring was demonstrably found, that dominant individuals contributed to guarding more frequently and the longest time and the juveniles contributed at least. There wasn´t set order in guarding. The most often was individually guarding or guarding in a group of 2 or 3 individuals.
|
|
|
Ethological study of meercats (Suricata suricatta) in Jihlava Zoo.
ZÍTKOVÁ, Jana
Meerkat (Suricata suricatta) is a mongoose species from South Africa. Insects are the primary food sources of their diet. Meerkat lives in groups of 2-30 individuals with a developed social structure. The group consists of a dominant pair and a different number of helpers of both sexes, which are involved in various forms of cooperation, for example care for cubs, guard service and maintaince of burrow. This study was done from July to September 2009 in zoo in Jihlava on a group of meerkats, which consisted of 14 individuals. There was used the method of direct observation. Observation was specialized on care of individuals for cubs. Recorded activities include, for example, pawing, carrying of cub, puryfying of cub and play. This study concerned in a dominant activities and analysed behaviour of individuals in rearing of cubs. The result of comparison was this succession of taking care for cubs: most frequently adult females, then yearling females, less adult males, yearling males and least juveniles in Jihlava group of meercats.
|
guest ::
RSS feed.