National Repository of Grey Literature 34,201 records found  beginprevious34192 - 34201  jump to record: Search took 1.20 seconds. 

Traffic network of Pardubice, comparison with Hradec Králové
Dvořáková, Iva ; Mervart, Michal (advisor) ; Jirsák, Petr (referee)
Description and evaluation of a traffic network of Pardubice in all transport sectors (air, water, railway, road and cycling) and its comparison with a network of Hradec Králové. Integration of both transport systems. Suggestions for improvement of traffic infrastructure and transport integration. Optimalization of connection of chosen urban neighbourhood with a town centre by urban mass transportation.

Methods of carbon dioxide emission reduction
Mališ, Jan ; Kermes, Vít (referee) ; Bébar, Ladislav (advisor)
Master's Thesis is focused on production of CO2 from fossil fuels combustion and the methods of CO2 emission from fossil fuels combustion reduction, resp. pre-combustion and post-combustion separation of CO2. Recapitulation of world consumption of primary energetic resources and carbon dioxide production as a result of theirs combustion in years 1971 - 2006 was made using a number of information sources. Whilst combustion o fossil fuel is related with production of CO2, calculation of emission rate of CO2 from fossil fuels (natural gas, crude oil and coal) was demonstrated. The Case Study of energy and material balances of gas turbine cycle with synthesis of methane from CO2 and from hydrogen which is produced in water splitting was made, using CHEMCAD software.

Methods of the baseflow separation and trends of phosphorus concentrations in this runoff
ŠVARCOVÁ, Eliška
The aim this bachelor thesis is to clarify the separation of streamflow at the individual components, describe their genesis, hydrological cycle and water balance. Furthermore, the thesis is specifically focused on the groundwater discharge component - baseflow . There are described some of the baseflow separation method. They are a method of empirical, methods based on graphical separation of streamflow hydrograph, methods that use a digital filter to separate the daily streamflow time series, methods that take into account of groundwater level or methods based on the analysis of natural isotopes and chemical substances and so on. There are many methods for the separation of the baseflow, and they are continously developing or are creating new and their results are often very different. There is also concentration of phosphorus and phosphates in groundwater and transfer of phosphorus by groundwater discharge into surface streams mentioned

Molecular phylogeny of selected species of suborder Spirurina from fishes inferred from SSU rRNA gene sequences.
ČERNOTÍKOVÁ, Eva
Nematodes contain species parasitic in freshwater, brackish-water and marine fishes. Some of them are highly pathogenic and are known to be agens of serious disease of fish with economic importance. The present classification based on morphology and life-cycles is unsatisfactory and it is necessary to incorporate the new molecular phylogenies into a classification system of nematodes. This work is aimed to assess phylogenetic relationships inferred from SSU rRNA gene sequences within "clade III" (suborder Spirurina sensu De Ley and Blaxter (2002)), especially among representatives of spirurid nematodes parazitizing fishes.

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...

Kovové materiály pro přechovávání vodíku
Soukup, Karel ; Rogut, J. ; Ludwik-Pardala, M. ; Wiatkowski, M. ; Šolcová, Olga
Another alternative is the redox cycle of iron/iron oxides which is presented here. Hydrogen storage is described as a reduction of iron oxides to metallic iron by hydrogen. Hydrogen production is achieved through the oxidation of iron with water steam. This contribution describes textural and transport properties of solid materials composed of iron and aluminium oxide phases which are believed to be promising for the hydrogen storage process.

The effect of prenatal MA exposure and crossfostering on functional changes in laboratory rat
Hrubá, Lenka ; Šlamberová, Romana (advisor) ; Tejkalová, Hana Barbora (referee) ; Šulcová, Alexandra (referee)
The aim of our study was to investigate the impact of prenatal methamphetamine (MA) exposure and cross-fostering on development of rat pups during preweaning period and on behavior, anxiety, cognitive function and nociception in adulthood. Mothers were daily exposed to injection of MA (5 mg/kg) or saline (S) approximately for 9 weeks: three weeks prior to impregnation, throughout the entire gestation period and for 23 days of lactation. Control females (C) did not receive any injection. On postnatal day (PD) 1, pups were cross-fostered so that each mother received some of her own and some of the pups of mother with the other two treatments. We obtained 9 experimental groups (C/C, C/S, C/MA, S/C, S/S, S/MA, MA/C, MA/S, MA/MA). Pups were tested during postnatal development by means of following behavioral tests: negative geotaxis, tail pull, righting reflex on surface and in mid-air, rotarod and bar-holding and were examined for physiological maturation. In adulthood, males and females rats were tested in the Open field (OF) and in the Elevated plus maze (EPM) for behavior and anxiety and in the Plantar test for thermal nociception. Adult male rats were tested on cognitive function in the Morris water maze (MWM). In adult female rats, phases of the estrous cycle were recognized and compared. Our...

Thermodynamic properties working media for absorbing cycles
Klomfar, Jaroslav ; Pátek, Jaroslav
Report summaries groundwork necessary for description thermodynamic propperties mixtures lithium bromide-water.

The comparative kineziologic analysis of a swimming cycle and the selected streghtend exercises
Brtník, Tomáš ; Kračmar, Bronislav (advisor) ; Novotný, Petr (referee)
Title: The comparative kineziologic analysis of a swimming cycle and the selected streghtend exercises Purposes: The aim of the thesis is to compare muscle timing in shoulder girdle during a swimming cycle and the selected streghtend exercises Methods: Surface electromyography combinated with kinematography analysis used synchronized video recording. Results: The muscle activation timing of the swimming cycle crawl in the water proof is more comparative with the muscle activation timing of the stepping cycle by the rubber expander use than the swimming simulator use. Key words: Swimming cycle, shoulder girdle, surface electromyography, kinematics analysis.

COMPARISON OF S-CO2 POWER CYCLES FOR NUCLEAR ENERGY
Veselý, L. ; Dostál, V. ; Entler, Slavomír
The supercritical carbon dioxide (S-CO2) is a possible cooling system for the new generations of nuclear reactors and fusion reactors. The S-CO2 power cycles have several advantages over other possible coolants such as water and helium. The advantages are the compression work, which is lower than in the case of helium, near the critical point and the S-CO2 is more compact than water and helium. The disadvantage is so called Pinch point which occurs in the regenerative heat exchanger. The pinch point can be eliminated by an arrangement of the cycle or using a mixture of CO2. This paper describes the S-CO2 power cycles for nuclear fission and fusion reactors.