APPLICATION OF CORROSION PLATES IN DRINKING WATER

Drinking water has always been, is and will be a strategic raw material. Stopping corrosion or at least minimisation of its impact while keeping quality drinking water supplies is a big challenge for the future. That is why the corrosion monitoring in the drinking water pipe system is one of the essentials for dealing with the issue. Areas of South Bohemia that were fitted with corrosion coupons and subsequently evaluated by the aggressiveness of water were chosen as examples for the study. The corrosion rate was monitored in drinking water during 35 and 82-day exposures. It was found that water in this part of the distribution system has the II. degree of the distribution system, i. e. medium. The evaluation of the corrosion rates also corresponds with the evaluation of the corrosion type using the Matlab. The impact of the corrosion plates on the general corrosion is slightly above 50 %. The occurrence of the pitting corrosion during such short disposure to a flowing drinking water in the pipeline is also significant

Design of apparatus for destructive tests of thermoelectric modules

Aby bylo možné spolehlivě testovat termoelektrické moduly, je nutné k tomu mít vhodnou měřící aparaturu. Předkládaná diplomová práce se zabývá konstrukčním návrhem měřící aparatury schopné provádět jak dlouhodobé testování termoelektrických modulů při konstantní vysoké teplotě, tak při tepelném cyklování. Za tímto účelem bylo navrženo rozšíření existující měřicí aparatury termoelektrických modulů. Obě varianty lze v krátké době měnit.In order to reliably test thermoelectric modules, it is necessary to have a adequate measuring apparatus. The presented diploma thesis deals with the design of measuring apparatus capable of performing both long-term testing of thermoelectric modules at a constant high temperature and thermal cycling extension has been designed. Both types can be changed in a short time.

Adsorpce fosforečnanů z vody recyklovaným betonem

It was only very recently that recycled concrete has also started to be used in water management primarily as a sorbent or reagent. Important factors influencing its use include mainly its origin, chemical, physical and mechanical characteristics. Adsorption kinetics was measured experimentally (Freundlich and Langmuir isotherm); and efficiency, values of adsorption capacity and changes of water chemical reactions due to added recycled concrete were found. Phosphates were removed either from standard solutions or from surface water.Recyklovaný beton se díky svým vlastnostem začal v posledních letech uplatňovat i ve vodním hospodářství především jako sorbent nebo reakční činidlo. K důležitým faktorům, ovlivňujícím jeho použití patří zejména jeho původ, chemické, fyzikální a mechanické charakteristiky. Experimentálně byla zjišťována kinetika adsorpce (Freundlichova a Langmuirova izoterma), účinnost, hodnoty adsorpční kapacity a změny chemické reakce vody vlivem přidaného recyklovaného betonu. Fosforečnany byly odstraňovány jak ze standardních roztoků, tak z povrchové vody

Human factor in IS/ICT

In todays world which is full of various technologies and we demand for sophisticated equipment, we often forget who is going to use the equipment. It is a person, the strongest part between all systems, and not only computing systems. But this person is simultaneously the weakness part of the system. This rule is often overtrumped by amount of technical literatures about security, which tries to push aside the core problem -- human factor. That is why we should constantly warn about human factor problems in the environment of information technology

Biofuels

Práce pojednává o biopalivech, které představují v současnosti se rozvíjející nový trend v oblasti obnovitelných zdrojů energie šetrnějších k životnímu prostředí. Je zaměřena především na situaci v našem nejbližším okolí, tedy na Evropskou Unii a Českou republiku

Determination of stability of fuel feeding into boiler

This bachelor thesis deals with the determination of stability of fuel feeding into boiler. The principle of the screw conveyor is described at the beginning of the thesis. It is followed by a description of the individual parts of the worm. The second part of the research deals with the properties of the materials transported. The second half of the bachelor thesis is practical. In this section there are experimentally measured values of flow of sawdust and wood chips. At the end, the measured values are compared and evaluated

The second generation of biofuels in the real world

The diploma thesis deals with the problematics of biofuels as a renewable source of energy in transportation, which has recently gotten under social spotlight. The theoretical part is focused on an explanation of basic terminology, historical development and especially reasons for the need to replace current fosil fuels with respect to an increasing volume of CO2 and shortening oil reserves. The practical part compares characteristics, use, pros and cons of the biofuels of the first and second generation and tries to estimate benefits of the biofuels of the second generation in both economic and environmental area

Financial analysis in selected company of clothing production

Prezenční154 - Katedra financíNeuveden

Biofuels

Práce pojednává o biopalivech, které představují v současnosti se rozvíjející nový trend v oblasti obnovitelných zdrojů energie šetrnějších k životnímu prostředí. Je zaměřena především na situaci v našem nejbližším okolí, tedy na Evropskou Unii a Českou republiku