Browsing Fakultät für Chemie (inkl. GAUSS) by Title
Now showing items 712-731 of 756
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Untersuchung der Elektronendichte von Antibiotika in Bezug auf pharmakologische Wirksamkeit
(2012-01-18)The macrolide antibiotic roxithromycin and twelve solvates of nine different fluoroquinolone antibiotics are investigated by single-crystal X-ray diffraction. Aspherical scattering factors ... -
Untersuchung der Entmischungskinetik an Silber-Natriumbromid-Einkristallen mit zeitaufgelöster inelastischer Neutronenstreuung
(2003-11-18)Time-resolved inelastic neutron scattering from acoustic phonons has been used to characterise the mechanism of demixing in AgBr-NaBr single crystals. Stroboscopic techniques allow to study ... -
Untersuchung der Reaktion von Wasserstoffatomen mit Sauerstoffmolekülen (H+O2+M → HO2+M) in weiten Druck- und Temperaturbereichen
(2004-07-20)In this work the pressure and temperature dependence of the combination reaction of hydrogen atoms with oxygen moleculesIn the experiments, the rate constants were measured at various ... -
Untersuchung der synaptischen Neurotransmitterfreisetzung mit kombiniert elektrophysiologischen und bildgebenden Verfahren
(2006-04-25)Neuronal networks in the brain are comprised of a mixture of excitatory and inhibitory neurons. The excitatory and inhibitory cells play distinct roles in the functional network since the ... -
Untersuchung einzelner SNARE-vermittelter Membranfusionsereignisse auf planaren porenüberspannenden Membranen
(2015-10-20)Even though there are a number of different in vitro fusion assays to analyze neuronal SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) mediated fusion, still the essential features of the in ... -
Untersuchungen an Flavonsäurederivaten mit hoher ß-Glukanaffinität
(2003-04-29)For the direct in vivo-detection of deep seated fungal infections a specific radiodiagnostical has been synthesised. Therefore a tyramine derivative of a stilbene-type optical brightener ... -
Untersuchungen zum Einfluss von London-Dispersionswechselwirkungen auf die Molekülaggregation
(2015-06-24)The energetics and dynamics of intermolecular interactions are at the core of fundamental research in physical chemistry. Noncovalent intermolecular interactions are studied on all scales of molecular size, ranging from ... -
Untersuchungen zum Sekundärmetabolismus arktischer und antarktischer Meereisbakterien
(2002-09-04)In this work psychrophile bacteria from arctic and antarctic sea-ice were submitted to a chemical and biological screening and due to the results some were examined thoroughly for interesting ... -
Untersuchungen zum Sekundärmetabolismus mariner Pilze, Naturstoffscreening und Bioprozessoptimierung mit Hilfe eines kontinuierlichen Bioreaktors
(2004-03-18)The work in hand is divided into three parts: At first the screening of marine microorganisms with the isolation of their metabolites and the solution of the concerning structures. Furthermore ... -
Untersuchungen zur Aggregation des ALS-relevanten TDP-43(307-347)
(2022-12-12)Amyotrophic lateral sclerosis (ALS) is a fatal, multicausal, neurodegenerative disease for which there is so far no cure. Abnormal cytoplasmic aggregates of TDP-43, a multifunctional RNA-binding protein, are a pathological ... -
Untersuchungen zur Biosynthese und Aktivität ausgewählter Plecomakrolide sowie chemisches Screening von Actinomyceten
(2005-06-10)This Ph.D. thesis deals with the isolation and structure elucidation of microbial secondary metabolites and comprises studies of their biosynthesis and biological activity.The first part ... -
Untersuchungen zur Elektrokatalyse von Hochtemperatur-Polymerelektrolytmembran-Brennstoffzellen (HT-PEMFCs)
(2010-02-22)This work deals with the optimisation of the cathode composition to enhance the performance of high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs). Phosphoric acid doped ... -
Untersuchungen zur enantioselektiven Totalsynthese von Parnafungin C
(2016-10-10)Within this thesis, two fragments of the natural product Parnafungin C, a highly functionalized chiral chromane with the correct absolute and relative configuration of all stereogenic centers as well as a biaryl system ... -
Untersuchungen zur Synthese fluoreszenzaktiver aromatischer Polyzyklen durch Palladium-katalysierte Domino-C‒H-Aktivierungen
(2014-11-18)Fluorescent dyes were synthesized via novel fourfold Palladium-catalyzed domino reactions consisting of a Sonogashira reaction, two carbopalladations and a C-H-activation in one domino process. -
Untersuchungen zur Synthese und Struktur von ein- und mehrkernigen Komplexen der Mnzmetalle mit Chelatliganden
(2001-11-07)Not available. -
Untersuchungen zur Synthese von Yohimban- und Campthoteca-Alkaloiden durch Domino-Knoevenagel-Hetero-Diels-Alder-Reaktion
(2007-11-01)In this context, the domino reactions proved to be an excellent tool to access complex molecules from simple substrates in environmentally and economically sustainable way. This ... -
Untersuchungen zur Wirkstoffproduktion extremophiler Mikroorganismen sowie Biosynthese und Derivatisierung ausgewählter mikrobieller Naturstoffe
(2009-07-23)The present work deals with the isolation, characterization and chemical derivatization of natural products from extremophilic microorganisms and streptomycetes. In order to ... -
Unusual Sesquiterpenes: Gorgonenes and Further Bioactive Secondary Metabolites Derived from Marine and Terrestrial Bacteria.
(2009-03-16)An increasing number of infectious diseases is still not curable as many organisms are showing antibiotic resistance which urges the development of new medicaments to combat them. Natural ...