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Different small molecule kinase inhibitors, which have an influence on cell growth, proliferation and cell survival were tested alone and in combination with Erlotinib in the Erlotinib-resistant non-small cell lung cancer cell line PC-9ER and Cisplatin in the K-Ras mutant cell line H358. The aim was to find out, which combinations produce the best antiproliferative effects in non-small cell lung cancer cell lines.
The larval zebrafish mutant Knörf has got a not yet identified gen, which is lethal after 14 dpf in a homozygous state. The mutation courses various degenerations and the loss of the regeneration ability. One of these degenerations was first discovered in the retina by a histological section. The mutants retinas show gaps in the IPL at 7 and 8 dpf which number increases during the maturation of the larva. In recent studies a pax 6 staining was performed, which showed that amacrine cells areaffected. Different types of amacrine cells were tested and it was shown that the parvalbuminergic amacrine cells disappear. The staining was performed in a time course. At 5 dpf is no difference between the number of parvalbuminergic amacrine cells in siblings and mutants but then the degeneration starts. At 2 dpa there is thefirst significant difference which increases at later stages and leads nearly to a full disappearance of these cells in the eye. Parvalbumin is not only present in the retina, therefore the brain as another central nervous system structure was examined. In the telencephalon these cells disappear already at 2 dpa. The parvalbuminergic cells are also present in the skeletal muscle of the tail. Here the degeneration starts approximately at the half of the tail and intensifies to distal areas. It was shown, that parvalbuminergic cells in the muscle disappear until 4dpa. The role of parvalbumin is seemed in the binding ofcalcium and therefore it supports the adjustment of the resting potential after an excitation in the central nervous system. In muscles it assists in the slowing of relaxing after a contraction of a muscle.
The main purpose of this thesis is to investigate factors influencing the buying decision of cigarette smokers. To achieve this, different theories concerning consumer buying behavior and factors influencing have been discussed to achieve a deeper understand of consumer behaviour. To enable me comprehend the influence factors that influence the buying decision of a smoker as a consumer, a survey with questionnaires was performed. The results of the survey indicates that brand awareness, quality of the tobacco, price, packaging, advertisement, influence by others and availability are the major factors influencing the buying decision of a smoker, with availability, quality, price and brand awareness having the most effective influence on a smoker.
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This thesis deals with the possible integration of social media communication in the marketing of the International Rectifier Corporation. The basis for the implementation of the new communication channel is set through a detailed description of basic, theoret ical functions and features of business-to-business communication as well as social media communication. Based on this knowledge the marketing communication of International Rectifier is analyzed and compared to the competitors. The theoretical lessons in combination with the analysis will then be used to develop a competitive and effective social media strategy for International Rectifier.
The main purpose of this Bachelor thesis was to find and to compile comprehensive information on barley genes expressed in the context of pollen embryogen esis. In the present study, this approach was confined to genes that were previously known to be associated with the initiation of embryogenesis in different plant species. First, candidate transcript sequences were identified in barley. Second, transcript and associated genomic sequences were analyzed in silico to provide suitable structural and functional annotations. Finally, the results of one representative example are presented and interpreted in detail. This work aims to contribute to a significantly improved understanding of pollen embryogenesis - a biological phenomenon broadly used for haploid technology in crop improvement.
The study “Proteomic and systems biological database analysis of changed proteins from rat brain tissue after diving “ is about system biological testing of proteomic data obtained by rat brain after experimental diving in a pressure chamber. Basically, brain tissue from animal decompression sickness (DCS) was analyzed by mass spectrometry and has given two larger sets of modified proteins. Thereupon, the resulting up- and down-regulated proteins wereidentified and later compared by means of systems of biological databases, in this case GeneGo MetaCoreTM, in order to find similar or various affected cell biological signaling pathways when two different mass-spectrometry methods were compared.
This work concentrates on the frequently used marketing instrument brand personality. Its effect on the consumer and how it drives consumer behaviour through TV advertis-ing are the focus. Scientific material, utilising research results of the last 20 years, has been analysed to investigate this subject. Furthermore, the example of Southern Comfort provides an insight of brand personality being applied to the real world of marketing business.
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This Bachelor thesis provides an experimental validation of the “si-Fi” software, which was designed for RNAi off-target searches and silencing efficiency predictions. The experimental approach is based on using synthetic DNA as RNAi-target as well as RNAi-trigger sequence. The data was generated by two different types of experiments using a transient gene silencing system in bombarded barley epidermal cells. The efficiency of RNAi was estimated by scoring the effect of silencing of the susceptibility-related gene Mlo on resistance of transformed cells to the powdery mildew fungus Blumeria graminis f. sp. hordei by observing reduction of fluorescent signals coming from an RNAi target fused to the green fluorescent protein. The aim of this work was a comparison between in silicio prediction of RNAi efficiency and off-target effects in barley and experimental data.