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Label-free detection of DNA has been successfully demonstrated on field effect transistor (FET) based devices. Since conducting organic materials was discovered and have attracted more and more research efforts by their profound advantages, this work will focus on utilizing an organic field effect transistor (OFET) as DNA sensor.
In this thesis we explore in particular the dynamics of a special type of quasi-particle in pi-conjugated materials termed polaron, the origin of which is intimately related to the strong interactions between the electronic and the vibrational degrees of freedom within these systems.
The African mosquito Anopheles gambiae is the insect vector responsible for half of worldwide malaria infections. One option for reducing malaria is genetic manipulation of the vector. By creating transgenic mosquitoes incapable of spreading the malaria pathogen, the human-mosquito-human cycle of infection may be interrupted.
Food web complexity is believed to deteriorate the strength of terrestrial trophic cascades whereby strong natural enemy influences on herbivores cascade to indirectly impact primary production. Predator diversity may increase food web complexity by promoting the occurrence of intraguild predation, wherein predators
The South Portuguese Zone (SPZ), which host world-class massive sulphide deposits, forms the southern fold-and-thrust belt of the Iberian Variscan orogeny. This thesis focuses on seismic-reflection and seismic-refraction processing efforts on a subset of the IBERSEIS deep seismic-reflection data set aiming at resolving the SPZ upper crust in high resolution.
Composite collections of channel catfish (Ictalurus punctatus), white perch (Morone americana), their prey items (forage fish and epibenthos), and surficial sediment had been gathered in the Delaware River estuary in Fall 2001 and Spring 2002 to evaluate polychlorinated biphenyl (PCB) deposition and
Integrated optics, by which optical devices are fabricated on a chip, is really a speedily growing field. Integrated optics is different from free-space optics in the manner which performs that will usually need bulky equipment in free-space optics, are put together on
The main goal of this thesis is to investigate the feasibility of a quadrature radio frequency receiver front-end using a second-order sampling topology in CMOS. Second-order sampling combines subsampling with a non-uniform sampling scheme. This non-uniform sampling scheme comprises of two uniform sampling streams with a small time delay between both streams, which allows the generation of an I and Q channel.
Greenstone belts are a common feature of Archean terrains. However, the tectonic environment for Archean earth remains in hot debate: did vertical or horizontal crustal movement dominate the Archean Eon? Small-scale structural analysis is applied to a late Archean greenstone belt in the Superior Province of the Canadian Shield in order to test the two end member hypotheses.
Comparative reports of bacterial genomics, now counting in the 100s, produce enormous amounts of information. To be able to support an organized and successful strategy to genomic analyses, a database powered program with graphic visualization of genomic qualities was created – GenComp. The application was employed on studies of obligate intracellular bacteria.