Zugleich: Diss. Würzburg, 2007. / Literaturverz.

Thesis (Doctoral)--University of Göteborg, 1983.

München, Techn. Universiẗat, Diss., 2004.

In der vorliegenden Dissertation - Kathoden für Metall-Luft Batterien - steht die Komponente Gasdiffusionselektrode (GDE) – oftmals auch als Luft-Kathode bezeichnet – einer wässrigen Metall-Luft Batterie im Fokus. Ziel dieser Arbeit ist die Synthese und Charakterisierung verschiedener Katalysatorsysteme für die Sauerstoffreduktion und -evolution. Dabei soll auf die Verwendung von Edelmetallen verzichtet und der Einsatz von verfügbaren und günstigen Materialien bzw. Herstellungsprozessen favorisiert werden. Auf Basis von bekannten Materialklassen sollen repräsentative Katalysatoren synthetisiert und ihre katalytischen Aktivitäten für die Sauerstoffreduktion und -evolution bestimmt werden. Im Detail wird eine mögliche Korrelation der strukturellen Eigenschaften der Katalysatoren auf die katalytische Aktivität untersucht. Auf Basis dieser Erkenntnisse sollen die Katalysatoren modifiziert werden, um die katalytischen Eigenschaften weiter zu optimieren. Um einen geschlossenen Entwicklungszyklus in dieser Arbeit realisieren zu können, wird parallel ein kostengünstiger und skalierbarer Herstellungsprozess von GDEs entwickelt. Ein weiteres Ziel dieser Arbeit ist es, Konzepte für sekundäre Zink-Luft Energiespeicher zu erarbeiten und deren Umsetzung zu untersuchen. Dabei kommen die zuvor entwickelten Katalysatoren zum Einsatz. Die vorliegende Arbeit gliedert sich, nach der Darlegung der relevanten Grundlagen mit Stand der Wissenschaft und Technik, in vier Teilkapitel, in denen die einzelnen Ziele adressiert sind. Dies sind die Erforschung reiner Katalysatoren und hybrider Katalysatoren sowie die Etablierung eines Herstellungsprozesses für GDEs und die Implementierung dieser in sekundäre Zink-Luft Energiespeicher. Die experimentellen Grundlagen befinden sich im darauffolgenden Kapitel. / The dissertation - Cathodes for metal-air batteries - focuses on the component gas diffusion electrode (GDE) - often referred to as air-cathode - of an aqueous metal-air battery. The aim of this work is the synthesis and characterization of different catalyst systems for the oxygen reduction reaction and oxygen evolution reaction. Instead of precious metals, available and cheap materials as well as low cost manufacturing processes are favored. Based on known material classes, representative catalysts will be synthesized and their catalytic activities for the oxygen reduction and evolution will be analyzed. In detail, a possible correlation of the structural properties of the catalysts with the catalytic activity is investigated. Based on these findings, the catalysts should be modified to further optimize the catalytic activity. In order to realize a closed development cycle in this thesis, a cost-effective and scalable manufacturing process for GDEs is being developed in parallel. Another goal of this work is to develop concepts for secondary zinc-air energy storage systems and to investigate their implementation. The present work is divided into four subchapters, in which the individual goals are addressed. These include research of pure catalysts and hybrid catalysts, as well as the establishment of a manufacturing process for GDEs and their implementation in secondary zinc-air energy storage systems.

According to the study [1] several firefighters are killed in action each year. This happens naturally in various ways. One of the major factors is that firefighters often do not know how the environment looks like, for example that a building in an industrial area contains hazardous gas cylinders. Without a solution, fire-fighters will continue to die in duty. It is therefore important to solve this problem so that we can minimize the risks and save lives.The goal of this project was a control system for pneumatic artificial muscles. To demonstrate that the desired functions of pneumatic artificial muscles worked properly, we created a simple arm with three degrees of freedom, with two muscles at each degree of freedom. The work consists mainly of pneumatic muscle, valves, programming and wireless communications. The focus was on controlling the robot arm using pneumatic artificial muscles.In order to achieve the arm to move to the desired position, we used wireless communication, the transmitter and receiver, and the pneumatic artificial muscles. This includes also programming, which was created on the programming language Spin.

Universiẗat, Diss., 2000--Hamburg.

Diss. Göteborg : Göteborgs universitet, 2007.

Zugl.: Karlsruhe, Univ., Diss., 2007

Zugl.: Oestrich-Winkel, Europ. Business School, Diss., 2008

Made available in DSpace on 2016-04-28T20:39:23Z (GMT). No. of bitstreams: 1 Patricia Rochael.pdf: 375912 bytes, checksum: 65b4ef39e89de445725effd209b36efb (MD5) Previous issue date: 2006-12-13 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / How can one seek and outline some finesse of handling in a game where not only are the partakers literary fragments, but also - implicitly or explicitly - ideas and even intensifications of the subjectivity? This has been the triggering problematization which has insisted and kept itself present during this study. From the tracking and research of Lya Luft's work, some volumes and characters have remained. We have dedicated ourselves to exploring - in these figures - some deadlocks at the induction of more life in their life spaces. They are figures acting as devices, nexuses and dismounts, shifting from solely literary contexts and telling us about some force struggles which are very interesting to clinical studies. Fragile health undertakings. Inapprehensible yet irreducible instabilities. Varying levels of sinking inherent to varying degrees of convalescence: a clinical intricacy. During the structuring of this journey a sustenance net has extended its contributions as well as conceptual and affective sparkles / Como buscar e delinear uma delicadeza de trato num jogo do qual participam não só fragmentos literários, mas também, implícita ou explicitamente, algumas idéias e ainda intensificações da subjetividade? Foi esta uma problematização impulsora que insistia e se presentificava no decorrer deste estudo. Do rastreamento e da pesquisa da obra de Lya Luft, alguns volumes e personagens permaneceram. Dedicamo-nos a explorar, nessas figuras, certos impasses na instalação de mais vida no seu espaço de vida. São figuras-dispositivos, nexos e desmontes que se deslocam de contextos unicamente literários e dizem de certos combates de forças que muito interessam à clínica. Frágeis empreendimentos de saúde. Instabilidades inapreensíveis e, no entanto, irredutíveis. Graus variáveis de naufrágio imanentes a graus variáveis de convalescença: uma complicação clínica. Na tessitura deste trajeto, uma rede de sustentação estende suas contribuições e lampejos conceituais e afetivos