Browsing Naturwissenschaften, Mathematik und Informatik by Title
Now showing items 4101-4120 of 5496
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S-Substituted Dibenzothiophenium Triflates: Synthesis, Structure and Reactivity
(2021-04-23)The content of this thesis focused on the general syntheses and applications S-substituted alkynyl-, alkenyl- and aryldibenzothiophenium triflates. Addition reactions have been performed from S-alkynyldibenzothiophenium ... -
S2 State Photodissociation of Diphenylcyclopropenone, Vibrational Energy Transfer along Aliphatic Chains, and Energy Calculations of Noble Gas-Halide Clusters
(2014-06-10)In this work, three major topics are investigated. The decarbonylation of diphenylcyclopropenone from its second excited electronic state forms the first part. This reaction was investigated using pump laser pulses of ... -
Saccharides as renewable resources for novel functional materials
(2021-01-21)Saccharides, also known as carbohydrates, are ubiquitous and have been used by men for millennia. The high variability of the saccharides ensures a wide field of applications. In general, saccharides could be subdivided ... -
Saccharomyces cerevisiae DNA helicases Mph1, Srs2 and Sgs1 collaborate for the reinitiation of stalled or collapsed replication forks
(2006-08-10)The MPH1 gene from Saccharomyces cerevisiae codes for a DNA helicase involved in the error-free bypass of DNA lesions via homologous recombination. Simultaneous deletion of the MPH1 and ... -
SAGA - Entwurf, Funktionsumfang und Anwendung eines Systems für Automatisierte Geowissenschaftliche Analysen
(2007-10-18)The System for Automated Geoscientific Analyses (SAGA), which is in the focus of this work, originates from the practical need to develop new methods for the analysis of spatial data and ... -
Sampling Inequalities and Applications
(2009-02-10)Sampling inequalities quantify the observation that a differentiable function cannot attain large values anywhere if its derivatives are bounded, and if it produces small data on a sufficiently ... -
Satellitenbasierte Indexversicherungen zur Absicherung des witterungsbedingten Produktionsrisikos in der Land- und Forstwirtschaft
(2021-11-04)This cumulative dissertation examines the hedging effectiveness of satellite-based weather index insurance for both annual crops, such as rice and wheat, and also perennial olive trees and pine stands. Unlike traditional ... -
Sauerstoffisotope zur Klärung der Herkunft nichtmetallischer Ausscheidungen (Clogging) beim Stranggießen von Stahl
(2008-03-03)Nonmetallic precipitates in steelmaking process are a process and a product problem. In Al-killed steel these precipitates are predominantly composed of alumina inclusions. These particles are deposited e.g. at the inner ... -
Scalable and Reliable Framework to Detect and Mitigate DDoS Attack in OpenFlow-based SDN Network
(2023-08-10)Software-defined networking in recent years has come into the sight of so many network designers as a successor to traditional networking. Unlike traditional networks where control and data planes engage together within a ... -
Scale challenges in inventory of forests aided by remote sensing
(2020-08-06)The impact of changing the scale of observation on information derived from forest inventories is the basis of scale-related research in forest inventory and analysis (FIA). Interactions between the scale of observation ... -
Scale dependence of pollinator community turnover and tritrophic interactions in changing landscapes
(2015-01-23)Agricultural landscapes account for approximately 40% of global terrestrial area and this proportion tends to grow due to the increasing demand for fuel, food and other agricultural products. For successful crop production ... -
Scale effects on genomic modelling and prediction
(2015-08-24)In this thesis, a novel method for scale corrected comparisons of LD structure in different genomic regions is suggested. Several aspects of scale-caused problems – from precision of marker effect estimates to accuracy of ... -
Scale- and trait dependent responses of bird communties to lowland rainforest restoration and frugivore-bird-seed interaction networks in Sumatra, Indonesia
(2014-02-10)Recovery of tropical secondary forest will require human assistance. The first important part in forest restoration is understanding the existing biodiversity and ecosystem service within the secondary forest and use this ... -
Scale-dependent management of biodiversity and ecosystem processes in fragmented landscapes
(2015-10-06)Global biodiversity is increasingly found in fragmented landscapes and populations due to altered human land use. Expansion of agricultural land and changed agricultural practices to the detriment of natural and semi-natural ... -
Scale-free Fluctuations in in Bose-Einstein Condensates, Quantum Dots and Music Rhythms
(2010-05-25)Mesoscopic systems are prone to substantial fluctuations that typically can not be neglected or avoided. The understanding of the origin and the consequences of these fluctuations (e.g.~for ... -
Scales of bacterial interactions on the leaf surface
(2017-01-16)Microbial organisms are ubiquitous to habitats on Earth and they are important components in cycling of matter. This is true for the micro-scale and at global scale, and all spatial scales in between. In soils, aquatic ... -
Scaling of Animal Communities: From Local and Landscape to Global Processes
(2017-12-12)Animal communities are influenced by processes changing from the local to global scale. Local processes include resource and habitat availability, while landscape processes are often driven by habitat availability and ... -
Scanning tunneling spectroscopy of magnetic bulk impurities: From a single Kondo atom towards a coupled system
(2013-03-06)This thesis focuses on single impurity Kondo physics and the transition towards coupled Kondo systems in real space. Single magnetic iron and cobalt and non magnetic silver atoms embedded below a copper surface are ... -
Scanning Tunneling Spectroscopy of Rare Earth Hexaborides
(2020-12-22)Rare earth hexaborides are a well-suited model system for the exploration of correlation physics. The varying 4f occupation of the rare earth elements result in a richness of correlated electron phenomena, which harbor ... -
Scanning tunneling spectroscopy of space charge regions in semiconductors: From single donor to heterostructure systems
(2012-05-22)The space charge region in combination with the band edge profile is fundamental for the understanding of semiconductor physics. Scanning tunneling microscopy (STM) and spectroscopy (STS) is a useful tool to investigate ...