E-Dissertationen: Suche
Anzeige der Dokumente 111-120 von 2282
Gas Electron Multipliers: Development of large area GEMS and spherical GEMS
(2012-01-06)
Gaseous radiation detectors have been a crucial part of high-energy physics instrumentation since the 1960s, when the first multiwire proportional counters were built. In the 1990s the first micropattern gas detectors ...
Functional Analysis of the Xin-Repeat Protein Family in Cross-striated Muscle
(2011-11-29)
The assembly of the sarcomere of cross-striated muscle involves a plethora of transcription factors, signalling and structural proteins and requires their coordinate interplay in order to construct this uniquely regular ...
Rainforest change analysis in Eastern Africa: A new multisourced, semi-quantitative approach to investigating more than 100 years of forest cover disturbance
(2012-01-11)
Forest change and disturbance of the past strongly influence the state of today’s forests and their biodiversity. However, knowledge of former forest landscape states can be subject to misunderstanding and the practical ...
Studien zur Aufklärung der Biosynthese apoplastischer Polyester in höheren Pflanzen
(2011-11-15)
Suberinablagerungen in den Wurzeln höherer Pflanzen tragen entscheidend zur Regulation des Wasserhaushaltes bei. Sie ermöglichen der Wurzel eine selektive Aufnahme von Nährstoffen, erlauben den Ausschluss toxischer Substanzen ...
Long bone histology of basalmost and derived Sauropodomorpha: the convergence of fibrolamellar bone and the evolution of giantism and nanism
(2012-01-11)
This study reports on long bone histology and growth in sauropodomorph dinosaurs. Derived members of Sauropodomorpha, the sauropods, were the largest terrestrial animals our planet has ever seen. New methods have recently ...
N-Heterocyclic Carbene Palladium Pincer Complexes: Synthesis, Aggregations and Catalytic Applications
(2011-11-29)
The work presented herein describes an investigation of a new class of pyridine-bridged bis- (benz)imidazolium salts and N-heterocyclic pincer carbene complexes derived there from, as well as their implication as homogenious ......
Spitting behaviour and fang morphology of spitting cobras
(2011-11-18)
To investigate the influence of different parameters on the venom spitting, behavioural experiments were conducted. In these experiments different targets were presented to the cobras. The results showed that contrary to ...
Konzeption, Aufbau und Inbetriebnahme eines neuen Vorbeschleunigersystems an ELSA
(2011-12-07)
An der Elektronen-Stretcher-Anlage ELSA des Physikalischen Instituts der Universität Bonn werden Doppelpolarisationsexperimente zur Untersuchung der Struktur der Baryonen im Rahmen des transregionalen Sonderforschungsbereichs ...
Testikuläre Teratome in AP-2γ heterozygoten Mäusen
(2011-12-27)
AP-2gamma hört zur Familie der AP-2 Transkriptionsfaktoren und ist von Tag E7.5-E12.5 in Primordialen Keimzellen (PGCs) exprimiert. Nach Deletion von AP-2gamma kommt es zum Verlust der PGCs nach Tag 8.5, woraus folgt dass ...
Über die Nullstellen der Dirichletschen L-Funktionen und die kleinste Primzahl in einer arithmetischen Progression
(2011-11-23)
Seien a und q teilerfremde, positive natürliche Zahlen. Linnik bewies 1944, dass die kleinste Primzahl in einer arithmetischen Progression a modulo q kleiner als Cq^L mit positiven Konstanten C und L ist. Linnik selbst gab ...