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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 281 to 290 of 6251 (0.377 seconds)| 281 |
The use of JAK2 quantitative polymerase chain reaction for the diagnosis and monitoring of patients with chronic myeloproliferativediseases黃庭欣, Wong, Ting-yan, Cybil. January 2008 (has links)
published_or_final_version / Medical Sciences / Master / Master of Medical Sciences
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Set up and validation of an automated PCR diagnostic and surveillance platform for influenza胡婉晶, Wu, Yuen-ching. January 2009 (has links)
published_or_final_version / Microbiology / Master / Master of Medical Sciences
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Calculations of oxygen reduction reaction on nanoparticlesTang, Wenjie, 1982- 16 September 2010 (has links)
Proton exchange membrane fuel cells are attractive power sources because they are highly efficient and do not pollute the environment. However, the use of Pt-based catalysts in present fuel cell technologies is not optimal: Pt is rare and expensive, and even the best commercial Pt cathodes have high overpotentials due to slow oxygen reduction kinetics. As a result, much effort has gone toward developing cheaper, more effective catalysts.
Nanoparticles are attractive because they have different catalytic properties than analogous bulk systems, require less material, and have tunable reactivities based on their composition and size. It is important to perform detailed studies of nanoparticle catalysts since composition and size effects are poorly understood. Computational simulations of such materials can provide useful insights and potentially aid in the design of new catalysts.
Here, I examine composition and size effects in nanoparticle catalysts using computational methods. Two bimetallic systems are investigated to explore composition effects: Pd-shell particles with several different core metals, and Pd/Cu random alloy particles. Depending on how the two metals are mixed (core-shell or random alloy), charge transfer and strain due to alloying are found to have different contributions to the catalytic activity. Size effects are studied for pure Pt particles, where corner and edge sites are found to play an important role. The binding geometries of molecular oxygen to corner and edge sites lead to peroxide formation instead of water on small Pt particles. Results form these calculations can provide useful information for designing novel catalysts in the future. By changing the composition and/or size of nanoparticles in the proper way, the interaction between the adsorbate and catalyst can be optimized, and better catalysts can be obtained. / text
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LIF studies of simple radicalsDerbyshire, David Wyn January 1987 (has links)
No description available.
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| 285 |
Detection and characterisation of diphtheria toxin genes and insertion sequences by PCR and other molecular techniquesPallen, Mark John January 1993 (has links)
No description available.
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| 286 |
H atom photofragment translational spectroscopy of small moleculesReed, Claire Louise January 1997 (has links)
No description available.
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Examples of Spiral Compression WoodDouglass, A. E. 01 1900 (has links)
No description available.
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Comparison of the rat proteins alphamacrofetoprotein and decidualisation-associated-proteinTeixeira, N. A. A. January 1986 (has links)
No description available.
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Waste minimisation for bromination chemistryPriest, Andrew January 2000 (has links)
No description available.
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| 290 |
Studies towards asymmetric aziridine synthesis via aza-darzens reaction of (2S)-N-bromoacyl camphorsultamMcLaren, Andrew B. January 2000 (has links)
No description available.
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