Ph.D. Theses

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2018-12-03
15:05
OpenAccess [PUBDB-2018-05160] Dissertation / PhD Thesis
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Numerical evaluation of Mellin-Barnes integrals in Minkowskian regions and their application to two-loop bosonic electroweak contributions to the weak mixing angle of the $\mathrm{Z\bar{b}b}$-vertex
143 pp. () [10.3204/PUBDB-2018-05160] = Dissertation, Humboldt-Universität zu Berlin, 2018  GO
In theZ-boson resonance physics several precision observables, like the mass and width of the Z-boson and the effective weak mixing angle for leptons and bottom quarks are in a perfect state, where the theory uncertainty is lower than the present experimental uncertainty. The ambitious concepts for the future colliders, like International Linear Collider (ILC), Future Circular Collider (FCC) or Circular Electron-Positron Collider (CEPC), aim for an improvement of measurements for the precision observables by one to two significant digits. [...]
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2018-11-30
21:06
OpenAccess [PUBDB-2018-05114] Dissertation / PhD Thesis

Processing – Structure – Property Relationships in Selected Iron-Based Nanostructures
134 pp. () [10.3204/PUBDB-2018-05114] = Dissertation, Montanuniversität Leoben, 2018  GO
Motivated by their extraordinary properties, many interdependencies between processing routes, microstructures and properties of nanostructured materials have been investigated in the past. Both top-down and bottom-up manufacturing techniques have been used to prepare unique nanostructures. [...]
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2018-11-30
09:51
[PUBDB-2018-05048] Book/Report/Dissertation / PhD Thesis
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Wärmeleitvermögen von Niob bei kryogenischen Temperaturen
[TESLA Report 1995-12]
TESLA Reports 85 pp. () = Dissertation, University of Regensburg, 1995
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2018-11-29
12:27
[PUBDB-2018-04979] Book/Report/Dissertation / PhD Thesis
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Resistive wall wake fields
[TESLA Report 1997-22]
TESLA Reports 124 pp. () = Dissertation, University of Hamburg, 1997
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2018-11-29
10:56
OpenAccess [PUBDB-2018-04961] Book/Report/Dissertation / PhD Thesis
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Atomic Structure and Stability of Magnetite (001)
[DESY-THESIS-18-036]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 228 pp. () [10.3204/PUBDB-2018-04961] = Dissertation, Universität Hamburg, 2018  GO
Magnetite is a material used for catalysts in some of today’s most important industrial processes,the Haber-Bosch and Fischer-Tropsch processes. It has raised attention due to its catalyticbehaviour in the water-gas shift reaction, its potential use in spintronic devices and hierarchicalmaterials. [...]
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2018-11-27
16:01
OpenAccess [PUBDB-2018-04885] Dissertation / PhD Thesis
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Symmetriebrechung und Elektronenkorrelationen während des asymmetrischen Zerfalls einer kernnahen Vakanz
219 pp. () [10.3204/PUBDB-2018-04885] = Dissertation, Goethe University Frankfurt, 2016  GO
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2018-11-27
07:59
[PUBDB-2018-04838] Report/Dissertation / PhD Thesis
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Vector sum control of pulsed accelerating fields in Lorentz force detuned superconducting cavities
[TESLA Report 1998-20]
137 pp. () = Dissertation, University of Hamburg, 1998
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2018-11-14
13:43
OpenAccess [PUBDB-2018-04495] Dissertation / PhD Thesis
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Cold Beams of Large Molecules for Structural Dynamics Studies
Hamburg 123 pp. () [10.3204/PUBDB-2018-04495] = Dissertation, Universität Hamburg, 2018  GO
Biomolecules and their reactions are of great interest because they are important for the functions in our body and thus for health. The structure of a molecule defines its function, and in this work we demonstrate the crucial steps that will allow direct recording of structural information from large biological molecules through gas-phase x-ray di↵raction. [...]
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2018-11-12
15:08
OpenAccess [PUBDB-2018-04432] Dissertation / PhD Thesis
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Novel Approaches to the Production & Analysis of Biological Nanomaterials for Serial- Femtosecond X-ray Crystallography
181 pp. () [10.3204/PUBDB-2018-04432] = Dissertation, University of Hamburg, 2018  GO
Tremendous effort has recently been put into the development of novel methods and techniques in the realm of serial-femtosecond x-ray crystallography (SFX) and x-ray free-electron lasers (XFEL). This thesis strives to contribute to current research approaches. [...]
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2018-11-12
14:52
OpenAccess [PUBDB-2018-04428] Book/Report/Dissertation / PhD Thesis
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Optical and aerodynamic focusing of isolated particles for diffractive imaging experiments at X-ray free electron lasers
[DESY-THESIS-2018-034]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 191 pp. () [10.3204/PUBDB-2018-04428] = Dissertation, Universität Hamburg, 2018  GO
The highly brilliant, short and coherent pulses produced by X-ray free-electron lasers (XFELs) opened up a unique opportunity to image small objects in nature, such as protein macromolecules, clusters, viruses and nanoparticles with nearly atomic spatial resolution, and their dynamic processes can be probed with femtosecond temporal resolution. Single-particle imaging (SPI) is a coherent diffraction imaging technique at XFELs that consists of directing a stream of randomly oriented isolated bio-particles across the focus of the X-ray beam to construct high-resolution 3D structure from diffraction patterns of multiple identical particles. [...]
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