Now showing items 1-20 of 2447
Neuartiges Herstellungsverfahren für Direkt-Methanol-Brennstoffzellen (DMFC) durch definierte Schichtstrukturen
A novel method to prepare membrane electrode assemblies (MEA) for direct methanol fuel cells (DMFC) by a layer-upon-layer fabrication onto a porous substrate is presented. The novel preparation technique is based on a ...
Influence of the chain microstructure on the properties of metallocene-based thermoplastic elastic polyolefines
Polymeric materials are unmatched in the diversity of their properties, such as flexibility, stiffness or mechanical strength. One still open point is to tailor these material properties by controlling the molecular ...
Synthese strukturierter Hybridnanopartikel und neuartiger filmbildender Polymerdispersionen via Miniemulsionsprozess
In the first subpart, a method was developed to produce stable dispersions through polyaddition reaction. Two systems were prepared: System A, comprising of polyaddition between Polyol PPG 2000 and diisocyanates and System ...
Zweikernige Ruthenium(I,I)- und Rhodium(II,II)-Komplexe als Katalysatoren für Lactam-Synthesen durch intramolekulare carbenoide C-H-Insertion von alpha-Diazoacetamiden
Subject of this study were syntheses of diazoacetamides and diazoacetoacetamides which were catalyzed with different ruthenium(I,I)- and rhodium(II,II)-catalysts to form via a carbenoid C-H-insertion beta- and gamma-lactams. ...
Simulation des Gelenkstellungskontrollsystems für Stehen und Laufen durch Modellierung eines Neuronennetzwerkes auf der Basis physiologischer Eigenschaften
Biological systems, especially the vertebrate brain, are very complex and usually possess a large number of nerve cells to produce flexible behavioural patterns. Therefore, model systems with a lower number of nerve cells ...
Der Einfluss eines Muskelsehnenorgans auf modulatorische Projektionsneurone und zentrale Mustergeneratoren im stomatogastrischen Nervensystem des Taschenkrebses
For an appropriate interaction with the environment, animals process sensory information with their nervous system. One well suited model systems for the investigation of neural processing is the stomatogastric nervous ...
Tuning polymeric latex functionality via the miniemulsion technique
We describe in this document new advances in miniemulsion polymerizations. We investigated different po-lymerizations in miniemulsion, namely radical, anionic,and condensation polymerizations, in order to obtain different ...
Diffusion processes in unsaturated porous media studied with Nuclear Magnetic Resonance techniques
Unsaturated porous media form two-phase systems consisting of the liquid and its vapor. Molecular exchange between the two phases defines an effective diffusion coefficient which substantially deviates from the bulk value ...
Inseparability criteria in finite Hilbert spaces
As soon as the concept of entanglement was introduced a controversy about its correct interpretation has originated. Today, more than 70 years later, the problem has not been completely resolved. One of the most important ...
Elektrolytalterung in Lithium-Ionen-Batterien
(Universität Ulm, 2016-12-06)
This work focuses on the investigations of electrolyte aging, aiming at monitoring and assessing of electrolyte side reactions in lithium ion cells by means of electrochemical tests and gas chromatography analysis. Therefore ...
Measurement of reduced dipole matrix elements in 40Ca+ and construction of a scalable light-ion interface
(Universität Ulm, 2017-01-10)
In the first part of this thesis, a method for determining transition dipole matrix elements is introduced. It combines measuring absorptive and dispersive atom-light interactions off-resonant to the transition in question ...
Development of selective sorbent materials for the determination of polychlorinated biphenyls (PCBs) in the environment
(Universität Ulm, 2016-11-21)
In this thesis, synthesis of molecularly imprinted polymers with molecular recognition for polychlorinated biphenyls (PCBs) as well as the application of the polymers as pre-concentration and clean-up sorbents in the ...
Proline-Quaterthiophene hybrids: Synthesis and self-assembly
(Universität Ulm, 2017-02-01)
The aim of this thesis was to synthesize new asymmetric pi-conjugated A-B systems, which are able to self-assemble in chiral suprastructures due to the presence of a single amino acid and to investigate them with respect ...
Electrochemical properties of several forms of carbon
(Universität Ulm, 2017-02-10)
Increasing demand for clean, globally available energy, provokes the development of alternative or nonconventional energy storage sources with higher energy density and power delivery. Therefore, supercapacitors have ...
Several proteins form variable RNA editing complexes in plant organelles
(Universität Ulm, 2017-03-02)
In RNA editing in plant organelles, PPR (Pentatricopeptide Repeat) proteins with an E or E and DYW domains at the C-terminus are important participants for recognizing the specific cis-elements. These proteins are able to ...
Fused S,N-heteroacenes and thiophene-substituted Ruthenium(II) complexes for organic solar cells
(Universität Ulm, 2016-07-05)
The objective of this thesis was the preparation of functionalized thiophene-comprising oligomers and Ru(II) sensitizers for application in organic solar cells. As electron-rich unit S,N-heteroacenes were implemented in ...
Functionalized oligothiophenes for application in organic solar cells
(Universität Ulm, 2016-04-28)
The steady increase in power conversion efficiencies (PCE) of donor/acceptor bulk hetero-junction (BHJ) organic solar cells (OSC) over the recent years was made possible by systematic improvement of the donor materials ...
Architecture and mechanical properties of crosslinked Keratin 8/18 networks
(Universität Ulm, 2016-07-19)
The cytoskeleton, which consists of microtubules, actin filaments and intermediate filaments, stabilizes cells under mechanical stress. Especially important for stress resistance is the intermediate filament network. Since ...
Sterically confined second-sphere receptor chromophores for optical molecular recognition and photocatalysis
(Universität Ulm, 2016-08-30)
The investigation of molecular processes and interactions through visible light is of fundamental importance for a wide range of technological and biological applications. The chromophores developed in this work have ...
Modulation of viral gene expression and cellular immune responses by primate lentiviral proteins Vpu, Vpr and Nef
(Universität Ulm, 2016-11-10)
Coevolution of primate lentiviruses and their host species is fueled by a continuous arms race, in which the host’s immune system induces an antiviral cellular state after sensing of the pathogen, whereas the virus evades ...