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Vertebrate Skeletal Mounts
Poláchová, Tereza ; Řezníček, Jan (advisor) ; Mazalová, Jana (referee)
The topic of this thesis is dissection of vertebrate skeletons while using available and appropriate methods. The theoretical part is prepared based on Czech and foreign sources. For this part, there were used print publications, articles from journals and some Internet sources. It summarizes theoretical knowledge of the occurrence and anatomical structure of vertebrates. The practical part includes methodology involving collection, preservation and actual processing of animals. In detail, there are described possible methods of work that are evaluated and compared in the closing part. These proposed procedures are used for the selected representatives of vertebrates, in the individual chapter called - Results. The outcome of this thesis is a detailed guide with the procedures of chosen methods and preserved skeletons with a description of their characteristics. Powered by TCPDF (www.tcpdf.org)
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Usage of dissection of invertebrate animals in education of biology at secondary school
Ondrová, Radka ; Mourek, Jan (advisor) ; Říhová, Dagmar (referee)
The thesis is focused on anatomy and implementation of dissections of 4 selected model invertebrates in school practice. The selected model species include swan mussel (Anodonta cygnea), stick insect (Medauroidea extradentata), cockchafer (Melolontha melolontha) and sea urchin (Echinus esculentus). In case of the cockchafer, the text is based on this model species, but the supporting photographs of dissection are taken from the tropical cetoniid beetle Pachnoda, which has very similar internal anatomy with the cockchafer. For all selected animals, I describe external and internal morphology as well as recommended methods of obtaining the material, proper killing of specimens, and dissection techniques. The text is supplemented with original digital macrophotographs. The thesis includes also an overview of primary and secondary school textbooks with focus on anatomy of the selected animals. The text is supplemented by a glossary of morphological terminology used in this thesis. Attached is a photographic atlas of dissections, which is a combination of this master thesis and my bachelor thesis (defended in 2010), in which I dealt with five model invertebrates in the same way. This is Ascaris suum, Lumbricus terrestris, Helix pomatia, Procambarus aff. fallax and Archimandrita tesselata. The complete...
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Dissections of triangles and distances of groups
Szabados, Michal ; Drápal, Aleš (advisor) ; Klazar, Martin (referee)
Denote by gdist(p) the least number of cells that have to be changed to get a latin square from the table of addition modulo prime p. A conjecture of Drápal, Cavenagh and Wanless states that there exists c > 0 such that gdist(p) ≤ c log(p). In this work we prove the conjecture for c ≈ 7.21, and the proof is done by constructing a dissection of an equilateral triangle of side n into O(log(n)) equilateral triangles. We also show a proof of the lower bound c log(p) ≤ gdist(p) with improved constant c ≈ 2.73. At the end of the work we present computational data which suggest that gdist(p)/ log(p) ≈ 3.56 for large values of p.
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