National Repository of Grey Literature 4 records found  Search took 0.01 seconds. 
Temperature-sensitive hydrogels
Šestáková, Eliška ; Hanyková, Lenka (advisor) ; Kouřilová, Hana (referee)
Hydrogely jsou měkké látky složené z polymerních sítí nabotnalých ve vodě. Některé z nich při změně teploty reagují skokovou změnou objemu. Tento fázový přechod je označován jako kolaps a odpovídá konformační změně, při které polymerní řetězce přechází z konformace klubka do konformace globule. Vlastnostmi se hydrogely podobají živým tkáním (chrupavkám, šlachám a sval·m), nejen proto jsou perspektivními materiály ohledně aplikací v biotechnologiích a farmacii. Tato práce se zabývá studiem kolapsu v hydrogelech tvořenými jednoduchými a dvojitými sítěmi (speciální případ dvou interpenetrujících polymerních sítí). Připravené vzorky (PNIPAAm, PNNDEAAm, PAMPS, PAAm a odpovídající dvojité sítě s PAAm jako druhou složkou) byly zkoumány pomocí botnacích, DSC a NMR experiment·. Botnací experimenty prokázaly, že dvojité sítě vykazují větší míru nabotnání a také vyšší kritickou teplotu než příslušné sítě jednoduché. Pomocí NMR a DSC experiment· byla určena entalpie kolapsu. Bylo zjištěno, že na signálech NMR se podílí jen část polymerních jednotek teplotně citlivého hydrogelu kv·li velké hustotě sesí'ování. 1
Community gardens - Revolt in urban public space
Šestáková, Eliška ; Kunt, Miroslav (advisor) ; Miroslav, Miroslav (referee)
Summary The diploma thesis discusses a topic of urban community gardens, which are growing trend over recent years in the Czech Republic. First of all the thesis focus on the need of urban human contact for nature elements. It outlines a brief history and development of urban gardening in the Czech Republic. The literary section proceeds further with concrete examples of existing community gardens, both abroad and in our country, it compares the situation of community gardening in Prague and Vienna and it is trying to sort through a diverse range of urban gardening and community gardens. It shows possible causes of this phenomenon and its objectives, features and benefits. The significance of this thesis is to show a diverse range of topics that appear in community gardens. Among the main are the following: regional supply, diversity of cultivated varieties, self-sufficiency and sustainability, common ownership, social interaction, informal education, protection and promotion of the environment. Equally important consequence of community gardens is the ability to think about the context and the change in attitude towards consumerism. The potential of community gardens in urban public space can also contain possible solutions to a wide range of local and global issues and challenges of contemporary society. On top of that there are developing relationships at all possible levels. The literary section in the end mentions public space and community. The practical part of this thesis was dedicated to project, which focused on Community garden Vidimova in Prague. This garden is located in the courtyard of a former kindergarten. The building is currently used by the Municipality of Prague district 11. Designed space garden has nearly 3,800 square meters. Development here has the character of a settlement with dense construction mainly residential multi-storey panel buildings. The project proposal was based on analyses of regional relations, natural conditions and the evaluation of the current state of the territory and its community. It is an constantly growing community that now includes over 40 regular members. This garden has a great potential to incorporate a wider range of users, but above all it is necessary to involve all concerned subjects in decision-making and the creation of this garden.

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5 Šestáková, Eva
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