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  • About
  • 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.

Synthesis and reactivities of ruthenium and osmium amine complexes /

Kwong, Si-san, Kenneth. January 1984 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1984.

Synthesis and properties of some amine and thioether complexes of ruthenium and osmium /

Che, Chi-ming. January 1981 (has links)
Thesis--Ph. D., University of Hong Kong, 1982.

High-valent ruthenium and osmium oxo complexes for homogeneous and photochemical oxidations of inorganic and organic substrates /

Yam, Wing-wah, Vivian. January 1988 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1988.

Synthesis, reactivities and electrochemistry of ruthenium and osmium oxo complexes with polypyridine ligands /

Leung, Wai-ho, Wilkie. January 1989 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1990.

Analysis of Ruthenium and Osmium Abundances in Sulfide Minerals from the Sudbury Ores, Ontario

Hsieh, Shuang-shii 10 1900 (has links)
Page 20 missing from the thesis. / <p> This work was undertaken to evaluate neutron activation analysis as a technique for simultaneous determination of Ru and Os in sulfide minerals by counting the γ radiation of 97Ru and 103Ru, and the β^-radiation of 191Os and 193Os. The samples studied were collected from the Strathcona and Frood-Stobie Cu-Ni sulfide deposits of Sudbury. Sulfide minerals, including pyrrhotite, chalcopyrite, pentlandite and cubanite were separated from samples including representatives of both ore grade and non-commercial material. The minerals were analysed for Ru and Os to determine their concentration ranges in these sulfides, the degree of geochemical coherence of the metals in sulfides from both high grade ore zones and weakly mineralized rocks and their distribution between coexisting sulfides.</p> / Thesis / Master of Science (MSc)

Fabrication of crystals from single metal atoms

Barry, Nicolas P.E., Pitto-Barry, Anaïs, Sanchez, A.M., Dove, A.P., Procter, R.J., Soldevila-Barreda, Joan J., Kirby, N., Hands-Portman, I., Smith, C.J., O'Reilly, R.K., Beanland, R., Sadler, P.J. 27 May 2014 (has links)
Yes / Metal nanocrystals offer new concepts for the design of nanodevices with a range of potential applications. Currently the formation of metal nanocrystals cannot be controlled at the level of individual atoms. Here we describe a new general method for the fabrication of multi-heteroatom-doped graphitic matrices decorated with very small, ångström-sized, three-dimensional (3D)-metal crystals of defined size. We irradiate boron-rich precious-metal-encapsulated self-spreading polymer micelles with electrons and produce, in real time, a doped graphitic support on which individual osmium atoms hop and migrate to form 3D-nanocrystals, as small as 15 Å in diameter, within 1 h. Crystal growth can be observed, quantified and controlled in real time. We also synthesize the first examples of mixed ruthenium–osmium 3D-nanocrystals. This technology not only allows the production of ångström-sized homo- and hetero-crystals, but also provides new experimental insight into the dynamics of nanocrystals and pathways for their assembly from single atoms. / We thank the Leverhulme Trust (Early Career Fellowship No. ECF-2013-414 to NPEB), the University of Warwick (Grant No. RDF 2013-14 to NPEB), the Swiss National Science Foundation (Grant No. PA00P2_145308 to NPEB and PBNEP2_142949 to APB), the ERC (Grant No. 247450 to PJS), EPSRC (EP/G004897/1 to RKOR, and EP/F034210/1 to PJS) and Science City (AWM/ERDF) for support. We thank the Wellcome Trust (Grant No. 055663/Z/98/Z) for funding the Electron Microscopy Facility, School of Life Sciences, University of Warwick. We also thank COST Action CM1105 for stimulating discussions, Thomas Wilks for supplying the micelle image for Figure 1, and the Australian Synchrotron and the University of Monash for allocation of time on the SAXS/ WAXS beamline and funding. The 2000FX Gatan Orius digital TEM camera used in this research was funded by Science City: Creating and Characterizing Next Generation Advanced Materials, with support from Advantage West Midlands and part funded by the European Regional Development Fund.

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