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 20 of 25 for “"Transition energy"”.
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A Just Transition : energy democracy, community choice aggregation, and the (im)possibilities of change
… undergoing unprecedented change. Movements for energy democracy, and proponents of a Just Transition -a transformation of the current fossil fuel-based system into place-based, sustainable, equitable, and democratically controlled economies-have attempted to capture the potential of these …
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An Analysis of Nuclear Power's Potential Viability as a Transition Energy Technology in South Carolina
… increasingly aware of the negative effects of energy production from burning fossil fuels. These range from the environmental impacts to the economic impacts caused by a strong reliance of energy production by burning these fuels. Burning fossil fuels releases large emissions of carbon dioxide …
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Determination of Recoil-Free Fractions From 151Eu Mossbauer Spectra of EuBO3
… ray from a nucleus is a result of a nuclear transition from one energy level to another. If the emitting nucleus is not bound in a crystal lattice, some of the transition energy, or the difference in energy of the two nuclear levels, may be imparted to the nucleus as it recoils, much as a gun …
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High precision x-ray spectroscopy on highly charged argon ions
… $1s2p\ ^1P_1 \rightarrow 1s^2\ ^1S_0$ ($w$'') transitions in Ar$^{16+}$ as well as of the Lyman-$\alpha_1$ transition in Cl$^{16+}$ with respect to the Lyman-$\alpha_1$ transition in Ar$^{17+}$ were carried out, using a new flat crystal spectrometer installed at the Heidelberg electron beam ion …
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Characterization of Local field effect in organic film using pressure technique
… of local dielectric changes on the excitonic energy levels in amorphous organic thin films for optoelectronic device applications. Compression of organic films causes a decrease in intermolecular spacing and, through solvation effects, lowers the exciton transition energy. A series of …
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Aspects of the microwave induced plasma as an element selective detector for supercritical fluid chromatography and supercritical fluid extraction
… influence of CO₂ on specific atomic and ionic transitions of Cl, Br, I, P, and S is described. Also presented is the determined relationship between transition energy and degree of signal depression resulting from the introduction of CO₂ to the plasma. Attempts to enhance the emission signals …
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High-Resolution Electron Collision Spectroscopy with Multicharged Ions in Merged Beams
… the other one is used as a dedicated target for energy-resolved electron collision processes, such as recombination. The work describes the implementation of this system for first electron collision spectroscopy experiments. A detection system has been realized including an ion detector and …
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Strain-engineered CMOS-compatible Ge photodetectors
… strain results in a lowering of the direct transition energy in Ge by 30 meV and extends the responsivity curve to near 1.6[mu]m. Design rules are given for high speed and high responsivity, and the advantages of waveguide integration for simultaneous achievement of high speed and high …
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A valence bond for several perturbations
… perturbation reflects the change in pi electron transition energy of the parent hydrocarbon as a result of heteroatom replacement of one or more carbon atoms or introducing substituents. Such spectral perturbations may be correlated with inductive and mesomeric heteroatom or substituent effects. …
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The design and construction of a constant acceleration drive system for Mössbauer experiments
<p>An excited nucleus may undergo a transition to its ground state by the emission of a gamma ray. The nucleus, if free to do so, will recoil and take some of the transition energy as recoil energy leaving less energy for the emitted gamma ray. This gamma ray does not have enough energy to excite a …
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Coherent two-dimensional infrared spectroscopy : a study of coupled vibrations
… broadening. The signatures of highly correlated transition energy fluctuations in a model system of two strongly coupled carbonyl stretching vibrations are reflected by the elongation of the cross peaks along the diagonal of the 2D spectrum. The dynamics of this correlation is monitored by the …
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Large-shift Raman scattering in insulating cuprate materials
… offset approximately 600 and 1500 cm-1 higher in energy respectively. A B1g feature coinciding in position with the optical conductivity peak is observed in all the T' phase materials, but not in the other insulators. An A1g peak is observed in Gd2Cu04 and Eu2Cu04 40-50 cm-1 lower in energy than …
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The mechanism of an unusual benzo/benzo photocycloaddition reaction : photophysical and photochemical investigation of [3.3] orthocyclophanes with two face-to-face preoriented benzenoid chromophores
… the formulation of kinetic models and potential energy surface (= PES) diagrams. The PR was found to be extremely complex and to proceed via three reaction pathways: S1, S2 and T1. For the [3.3] OCP with the best possible geometry and highest skeletal rigidity, the occurrence of an excimer (= EX) …
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Novel dilute nitride semiconductor materials for mid-infrared applications
… in bandgap-and localised state-related transitions. The emission related to the bandgap undergoes hardly any energy shift with increasing laser excitation power while it redshifts with increasing temperature. The emission from the localised states blueshifts with increasing laser …
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Quantum Chemical Studies for the Engineering of Metal Organic Materials
<p>Metal Organic Materials (MOM) are composed of transition metal ions as connectors and organic ligands as linkers. MOMs have been found to have high porosity, catalytic, and optical properties. Here we study the gas adsorption, color change, and non-linear optical properties of MOMs. These …
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Synthesis and Evaluation of Carbohydrate Based Cationic Polymers for siRNA Delivery and Tracking
… The ability of trehalose to lower phase transition energy associated with water freezing and protective properties have shown that poly(trehalose) has great promise to serve as an important component in formulation of effective nanomedicines. In order to fulfill the requirement for …
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Recovery and use of ammonia from coke-making processes
The increase in energy demand and continuous rise of greenhouse gas emissions urge for a development of clean technologies to transition energy sector to a carbon-neutral future. Approximately 80 % of the global energy is produced by burning oil, coal and natural gas. Coal is the most consumed …
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Raman and fluorescence spectra of azabenzenes
… vibronic mixing in a weakly allowed electronic transition should show the greatest activity in Raman scattering, and especially so in the pre-resonance Raman region. The pre-resonance effect is an increase of intensity of a Raman line as the exciting frequency approaches that of the weak …
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Toward realizing power scalable and energy proportional high-speed wireline links
… links at the center stage. Due to saturating energy efficiency improvements over the last five years, increasing the data throughput comes at the cost of power consumption. Conventionally, serial link power can be reduced by optimizing individual building blocks such as output drivers, …
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REINTERPRETING URBAN TRANSITIONS Spatial conditions, actors and implications in energy renovation of public housing neighbourhoods. Insights from Italy and France
L'abstract è presente nell'allegato / the abstract is in the attachment
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