@misc{Berg2004, author = {Berg, Andrea}, title = {Dynastie oder Demokratie? : Die Personalisierung des Staates in Zentralasien}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-47405}, year = {2004}, abstract = {The increasing concentration of power in the hands of the presidential families in all Central Asian states led to the personalisation of the state during the last years. The presidents successfully established neo-patrimonial, authoritarian regimes with a high level of consolidation but without fulfilling the criterion of democracy. The article explores the strategies the presidents use to maintain their authority and discusses which political developments can be expected concerning the question of succession.}, language = {de} } @article{GehneFlehrKienzleretal.2012, author = {Gehne, S{\"o}ren and Flehr, Roman and Kienzler, Andrea Altevogt Nee and Berg, Maik and Bannwarth, Willi and Kumke, Michael Uwe}, title = {Dye dynamics in three-color FRET samples}, series = {The journal of physical chemistry : B, Condensed matter, materials, surfaces, interfaces \& biophysical chemistry}, volume = {116}, journal = {The journal of physical chemistry : B, Condensed matter, materials, surfaces, interfaces \& biophysical chemistry}, number = {35}, publisher = {American Chemical Society}, address = {Washington}, issn = {1520-6106}, doi = {10.1021/jp3064273}, pages = {10798 -- 10806}, year = {2012}, abstract = {Time-resolved emission data (fluorescence decay and fluorescence depolarization) of two three-color Forster resonance energy transfer (tc-FRET) systems consisting of a carbostyril donor (D), a ruthenium complex (Ru) as relay dye, and a Cy5 derivative (Cy) or, optionally, an anthraquinone quencher (Q) were carefully analyzed using advanced distribution analysis models. Thereby, it is possible to get information on the flexibility and mobility of the chromophores which are bound to double stranded (ds) DNA. Especially the distance distribution based on the analysis of the fluorescence depolarization is an attractive approach to complement data of fluorescence decay time analysis. The distance distributions extracted from the experimental data were in excellent agreement with those determined from accessible volume (AV) simulations. Moreover, the study showed that for tc-FRET systems the combination of dyes emitting on different time scales (e.g., nanoseconds vs microseconds) is highly beneficial in the distribution analysis of time-resolved luminescence data in cases where macromolecules such as DNA are involved. Here, the short lifetimes can yield information on the rotation of the dye molecule itself and the long lifetime can give insight in the overall dynamics of the macromolecule.}, language = {en} }