Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"energy transfer mechanisms"”.
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Stimulated Raman scattering, lasing, and molecular energy transfer mechanisms in KXe probed by laser spectroscopy
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Infrared Radiation of Metal Oxidation Chemical Reaction Flames
… have been calculated in order to characterize energy transfer mechanisms and radiative emissions. Infrared spontaneous emission spectra have been calculated and a computer program written for least-squares determination of vibrational population distributions from experimental spectra.
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FLORESCENCE AND unconversion IN CAF[2]:HO[3+]
… was carried out, From the study, various energy transfer mechanisms responsible for the intensities of fluorescence were analysed. We begin in Chapter 1 with a brief description of the lanthanides. A review of past work on trivalent holmium was given. We then describe, in particular, the …
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Quantifying polyphosphate energy for modelling of polyphosphate accumulating organisms behaviour in anaerobic digestors
… focus on quantifying polyphosphate (PolyP) energy and its role in PAO metabolism. The study was motivated by observed discrepancies between theoretical predictions and experimental observations in AD systems treating phosphorus-rich waste activated sludge, particularly regarding pH …
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ARYL-HETEROATOM CROSS-COUPLING WITH DUAL NICKEL/PHOTOCATALYST PROTOCOLS : THEORY, APPLICATIONS AND RECENT DEVELOPMENTS
… is concluded that photocatalytic single electron transfer-based cycles, proposed for a number of coupling protocols, are very unlikely to take place. It is made clear that, based on the current knowledge, two principle mechanism are reasonable: energy transfer or thermal Ni(I)/Ni(III) cycles. …
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Syntheseses [sic] and evaluation of porphyrin derivatives for applications in medicine and in material science
… metal complexes are good models for studying energy transfer mechanisms and can also find application in the area of multi-electron redox catalysis. Chapter 6 reports a new efficient synthetic route to carbohydrate-porphyrin conjugates.
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A molecular dynamics study of the stability of small prenucleation water clusters
<p>"The dynamical stability and internal energy distribution of prenucleation water embryos have been studied by the molecular dynamic's method. Water clusters containing either five or twenty molecules were chosen to represent prenucleation embryos of small or intermediate size. A central force …
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On the Influence of Faraday Waves on Transport in Resonant Acoustic Mixing
… particles therein. This work investigates the energy pathways that an oscillatory mixer has and connects surface deformation to bulk rotational flow and particle forcing. This study is conducted in three phases. In phase 1, a thermodynamic first- and second-law analysis couples the surface …
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Studies on photosystem II in higher plant chloroplasts
… isolated 0 2—evolving PSII preparations. Both energy transfer and molecular aspects of P511 have been investigated. The initial reactions of energy transfer that occur within the first few nanoseconds of excitation were measured by time resolved fluorescence using the technique of single photon …
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Study on Bandgap Manipulation and Structural Vibration Control in Sandwich Metastructures
… To achieve vibration attenuation and suppress energy transmission under broadband excitation, a sandwich wave-filtering component integrating load-bearing and wave-filtering functions is proposed, and its core layer is designed through a dynamic-response-based topology optimization method. By …
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Applications of fluorescence spectroscopy to environmental chemistry
… even at distances of ≈12 Å. Forster or Dexter energy transfer mechanisms are unable to account for the observed rates and lack of solvent dependence in quenching. An excellent correlation is observed between kq and the non-radiative relaxation rate. These results confirm that nitroxyl radicals …
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Strongly nonlinear dynamics and acoustics of coupled granular sonic vacua: theoretical and experimental studies
Passive control of energy flow by means of trapping, redirection and scattering has been the subject of considerable attention in recent years. The use of ordered granular media is a promising candidate for such designs. Ordered granular media are ordered aggregates, where neighboring particles (or …
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Unlocking the Rare Earth Elements Potential of Allanite: A Comprehensive Study of Beneficiation and Leaching
… control to predominantly diffusion-controlled mechanisms at elevated temperatures. Autoclave leaching also produced promising results, with TREE and Fe recoveries reaching around 90% and 60%, respectively, at 150 °C. Compared to microwave leaching, autoclave leaching was more effective for …