Browsing by Title
Now showing items 6884-6903 of 12411
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Investigations into the DNP characteristics of electron and proton irradiated polyethylene and polypropylene
(2018-03-06)To achieve a significant enhancement of the nuclear polarisation of solid state target materials one must use the method of dynamic nuclear polarisation. This necessitates unpaired electrons, that can be created as ... -
Investigations into the High-Temperature Air Drying of Tomato Pieces
(2008)<p>The present study investigates the feasibility of using high air temperatures (100 ºC-200 ºC) in the oven for drying tomato pieces and the effects of such high temperatures on the drying kinetics as well as on the quality ... -
Investigations of Combined Strategies to reverse P-glycoprotein- and BCRP-mediated Multidrug Resistance in Human Ovarian Cancer Cells and Xenograft Tumors
(2006)<b>Purpose</b>: The ATP-binding cassette (ABC) transporters P-glycoprotein (Pgp) and BCRP are implicated in the multidrug resistance (MDR) of many tumors. Pgp-mediated MDR can be functionally inhibited using small molecule ... -
Investigations of D-glycero-D-ido-octulose (D-g-D-i-oct) metabolism and transketolases in the resurrection plant Craterostigma plantagineum
(2016-02-02)Eight-carbon monosaccharides (C<sub>8</sub>H<sub>16</sub>O<sub>8</sub>) occur naturally in a number of higher plants (e.g. avocado and sedum species), but they did not get much attention in research compared to common ... -
Investigations of Intraday Variable Blazar Cores and the Connected Interstellar Medium
(2006)The work presented here is an attempt to shed further light upon the phenomenon of short-term radio variations (Intraday Variability, IDV) often observed in compact blazar cores. Three different new observational approaches ... -
Investigations of Quality Aspects in UAV-Based Laser Scanning for Agriculture and Deformation Monitoring
(2025-04-17)This dissertation investigates the quality of UAV-based laser scanning and its applications in agriculture and deformation monitoring. UAV-based laser scanning is a growing technology that integrates sensors such as GNSS ... -
Investigations on 1,2-oxaphosphetane complexes
(2017-11-27)In this thesis, first derivatives of previously unknown 1,2-oxaphosphetane complexes were synthesized, either by reaction of Li/Cl phosphinidenoid complexes with epoxides or by formal insertion into the OH bond of 2-iodoethanol ... -
Investigations on 1,2σ3λ3-Oxaphosphetanes
(2025-07-10)In this thesis, new 1,2σ<sup>3</sup>λ<sup>3</sup>-oxaphosphetanes were synthesis and the reactivity of this former elusive compound class was investigated. This work describes the synthesis of 1,2σ<sup>3</sup>λ<sup>3</su ... -
Investigations on centrosomes, their function and regulation during immune synapse formation
(2022-01-24)The centrosome is a cellular organelle well known for its function during cell division. It consists of two centrioles that are formed by microtubules and surrounded by a multiprotein matrix the so-called pericentriolar ... -
The Investigations on Diterpene Biosynthesis through Substrate and Protein Engineering
(2025-10-20)This cumulative doctoral dissertation "The Investigations on Diterpene Biosynthesis through Substrate and Protein Engineering" concentrates on diterpene biosynthesis from various aspects, including non-natural biotransformation, ... -
Investigations on Marine Natural Products from Indo-Pacific Nudibranchia (Mollusca: Gastropoda): Chemoecology, Medicinal Potential & Toxin Resistance
(2022-03-22)This thesis focusses on the investigation of marine natural products (MNPs) from nudibranchs of the Central Indo-Pacific Ocean and their food sources. MNPs are important lead structures in the drug discovery process, as ... -
Investigations on pathogenicity, invasion biology and population dynamics of the Pine Wood Nematode Bursaphelenchus xylophilus (Steiner und Buhrer 1934) Nickle 1970 in European conifers
(2008)The objectives of the present study were to identify potential European host trees for the Pine Wood Nematode (PWN) and to investigate the interrelationship between PWN, host trees and temperature.<br /> Inoculation ... -
Investigations on structure and biosynthesis of ribosomal peptide natural products involved in a tripartite mutualistic interaction
(2024-04-16)Ribosomally synthesized and post-translationally modified peptides (RiPPs) constitute a chemically diverse group of biologically active molecules. Several RiPPs play outstanding roles in the social behavior and physiology ... -
Investigations on the early biosynthetic steps of griseorhodin A
(2012-05-03)Presented here are the results concerning the early biosynthesis of the telomerase inhibitor griseorhodin A.<br /> The griseorhodin biosynthetic gene cluster encodes components of a type II polyketide synthase (PKS). The ... -
Investigations on the effect of entomopathogenic fungi on whiteflies
(2001)The entomopathogenic fungus<i> Paecilomyces fumosoroseus</i> is well-known for its broad host-spectrum and efficacy against many kinds of insects. Although its effectiveness against soil-borne arthropods has already been ... -
Investigations on the Influence of Antenna Near-field Effects and Satellite Obstruction on the Uncertainty of GNSS-based Distance Measurements
(2016-03-31)Antenna near-field effects are one of the accuracy limiting factors on GNSS-based distance measurements. In order to analyse these influences, a measurement campaign at an EDM calibration baseline site with optimum GNSS ... -
Investigations on the structure, biosynthesis and biology of antibacterial cyclic lipopeptides
(2013-03-21)The study was aimed to find new antibacterial cyclic lipopeptides in <i>Pseudomonas</i> bacteria using genome mining techniques. Application of this genome-driven approach led to the <i>in-silico</i> identification of ... -
Investigations on the synthesis and reactivity of σ3λ3-oxaphosphirane complexes with fluorinated C-substituents
(2017-03-02)The objective of this PhD work was to synthesize new oxaphosphirane complexes having the triphenylmethyl group bound to phosphorus. These derivatives may possess a higher lability of the P-C exocyclic bond than other ... -
Investigations to quantify individual exposure to solar ultraviolet erythemal radiation including cloud meteorological impact
(2020-07-09)Combined meteorological and dosimetric ultraviolet (UV) erythemal radiation (UVER) measurements were performed in 2016 and 2017. Based on collected data sets the actual UVER exposure of outdoor working probands is determined ... -
Investing Sustainably in African Livestock Development: Opportunities and Trade-Offs
(2020-08)The production and consumption of animal source foods is central to the ongoing discussion of global food systems. The objectives of this report are first to describe the patterns and changing structures of the Sub-Saharan ...
