Refine
Year of publication
- 2014 (222) (remove)
Document Type
- Doctoral Thesis (222) (remove)
Keywords
- Gammastrahlungsastronomie (4)
- data analysis (4)
- gamma-ray astronomy (4)
- Crab Nebula (3)
- Datenanalyse (3)
- Krebsnebel (3)
- Synchronisation (3)
- Systembiologie (3)
- synchronization (3)
- systems biology (3)
- Fermi-LAT (2)
- Geomorphologie (2)
- H.E.S.S. (2)
- Ladungstransport (2)
- Mathematikunterricht (2)
- Polyadenylierung (2)
- Polymer (2)
- Propensity Score Matching (2)
- RDF (2)
- Rekonstruktionsmethoden (2)
- Simulationen (2)
- charge transport (2)
- gammalib/ctools (2)
- geomorphology (2)
- induced seismicity (2)
- ionic liquids (2)
- ionische Flüssigkeiten (2)
- jüdisches Recht (2)
- mathematics education (2)
- organic solar cells (2)
- polyadenylation (2)
- propensity score matching (2)
- reconstruction methods (2)
- simulation (2)
- 3D geomechanical numerical model (1)
- 3D geomechanisch-nummerische Modellierung (1)
- AMALi (1)
- Absorptionseigenschaften (1)
- Adana Basin (1)
- Adana Becken (1)
- Aggression (1)
- Aktive Arbeitsmarktpolitik (1)
- Algorithmenablaufplanung (1)
- Algorithmenkonfiguration (1)
- Algorithmenselektion (1)
- Alkin (1)
- Alternative Akzeptorpolymere (1)
- Anfragepaare (1)
- Anorexia nervosa (1)
- Antiferromagnetisch (1)
- Antwortmengenprogrammierung (1)
- Arabidopsis (1)
- Arbeitsmarktpolitik (1)
- Arbeitssuchverhalten (1)
- Arctic (1)
- Arktis (1)
- Assoziationsregeln (1)
- Atmosphäre (1)
- Atmosphärenmodellierung (1)
- Attribut-Analysen (1)
- Aufenthaltsdauer (1)
- Australia (1)
- Australien (1)
- Automatisierung (1)
- Azid (1)
- Azobenzolhaltige Polymerfilme (1)
- Barokline Instabilität (1)
- Batterien (1)
- Bayesian estimation (1)
- Bayesian networks (1)
- Bayessche Netze (1)
- Bayessche Schätzer (1)
- Benzylisothiocyanat (1)
- Beobachtungen (1)
- Bergsturz (1)
- Bewegungsgleichung (1)
- Bewässerung (1)
- Bioimpdanz (1)
- Biomaterialien (1)
- Biophysik (1)
- Biosensor (1)
- Biosignaturen (1)
- Biphenol (1)
- Bittergeschmack (1)
- Bittergeschmacksrezeptor (1)
- Blickbewegungen beim Lesen (1)
- Blickbewegungsmessung (1)
- Blühzeit (1)
- Bodenwassergehalt (1)
- Boolean constraint solver (1)
- Bugwellenschocks (1)
- Bureaucracy (1)
- Bürgerdienste (1)
- Bürgerschaftliches Engagement (1)
- Charakterisierung Planetenatmosphären (1)
- Chromanon (1)
- Chromatin-Immunopräzipitation (1)
- Chromon (1)
- Civil Service Reform (1)
- Cloud Datenzentren (1)
- Coaching (1)
- Common-Reflection-Surface (1)
- Comparative Deletion (1)
- Compromise (1)
- Coordination (1)
- Culture (1)
- Cumarin (1)
- Cyanobakterien (1)
- Cyprus arc (1)
- Czech Republic (1)
- Datenbank (1)
- Datenintegration (1)
- Datenreinigung (1)
- Dauerfrostboden (1)
- Deformationsquellenmodellierung (1)
- Dendroklimatologie (1)
- Denudation (1)
- Desensibilisierung (1)
- Dimensionsstabilität (1)
- Disziplinierung (1)
- Donator-Akzeptor-Copolymere (1)
- Donor-acceptor copolymers (1)
- Doping (1)
- EMG (1)
- EU law state liability (1)
- Early New High German (1)
- Effizienzanalyse (1)
- Ehrenamt (1)
- Eisrinne (1)
- Elastizität (1)
- Elektrodynamik (1)
- Energieeffizienz (1)
- Energiespeicher (1)
- English working class (1)
- Entfernungen (1)
- Entrepreneur (1)
- Entscheidungen (1)
- Entscheidungen letztinstanzlicher nationaler Gerichte (1)
- Entwicklungswerkzeuge (1)
- European Parliament (1)
- Europäisches Parlament (1)
- Experiment (1)
- Extraktion (1)
- Extravasation-rate limited Gewebemodelle (1)
- FOXO1 (1)
- Farbstoff (1)
- Fehlende Daten (1)
- Fermi (1)
- Finanz (1)
- Finnmark Platform (1)
- Flavonoid-Metabolismus (1)
- Fluoreszens (1)
- Foucault (1)
- Freiwilligenmanagement (1)
- Frühneuhochdeutsch (1)
- Fulleren (1)
- Fusionen (1)
- GHQ (1)
- Galaxien (1)
- GammaLib/ctools (1)
- Generierung von Ladungsträgern (1)
- Genregulation (1)
- Geophysik (1)
- Georadar (1)
- Georgia (1)
- Georgien (1)
- Geschichte 1999-2009 (1)
- Geschmackswahrnehmung (1)
- Geschäftsprozessmanagement (1)
- Gesundheitsförderung (1)
- Gewichtsreduktion (1)
- Glukosinolaten (1)
- Gradphrasen (1)
- Grenzgebiet (1)
- H.E.S.S (1)
- HCI (1)
- Halacha (1)
- Halo (1)
- Hauptspeicher Technologie (1)
- Hebung des Plateaus (1)
- Himalaya-Tibet Orogen (1)
- Himalaya-Tibet orogen (1)
- Hochgeschwindigkeitswolken (1)
- Holozän (1)
- Holzmodifikation (1)
- Imidazolium (1)
- In-situ Rasterkraftmikroskopie (1)
- InSAR (1)
- Indian Monsoon (1)
- Indonesien (1)
- Influenza (1)
- Informationsvorhaltung (1)
- Interaktion (1)
- Interaktionsstudie (1)
- Inverse Probability Weighting (1)
- Isometrie (1)
- Judentum (1)
- Jugendliche (1)
- Kalorienrestriktion (1)
- Kinder und Jugendliche (1)
- Klassifizierung (1)
- Klick (1)
- Klimawandel (1)
- Kohlenstoff (1)
- Kommunale Verwaltung (1)
- Komparativ-Tilgung (1)
- Kompartiment-Modelle (1)
- Kompromiss (1)
- Kosmologie (1)
- Kristallisation von Magnetit-Nanopartikeln (1)
- Krustenstruktur der Süd-Türkei (1)
- Krustenstruktur des Eratosthenes Seeberges (1)
- Kultur (1)
- Kulturelle Aktivität (1)
- Köbler decision (1)
- Körper-Leib (1)
- LCST (1)
- LOD (1)
- Landepositionen (1)
- Language acquisition (1)
- Laufzeitverhalten (1)
- Lehrer (1)
- Lerngruppensprache (1)
- Lipide (1)
- Lithium-Schwefel-Batterien (1)
- Llaima Vulkan (1)
- Llaima volcano (1)
- Logik (1)
- Loppa High (1)
- MBI (1)
- Mannigfaltigkeit (1)
- Markt (1)
- Mars (1)
- Mechanomyografie (1)
- Mediengewalt (1)
- Mehrkomponentenanalyse (1)
- Mekong Delta (1)
- Mensch-Computer-Interaktion (1)
- Mergers (1)
- Metaboliten (1)
- Metall/Graphen/Polymer Grenzfläch (1)
- Methanogene Archaeen (1)
- Methoden (1)
- Microcystin (1)
- Modell (1)
- Modell der Bayesianischen Sakkadenplanung (1)
- Momententensor (1)
- Multiplex (1)
- Multiskale (1)
- Musikpädagogik (1)
- Mustererkennung (1)
- N157B (1)
- Narration (1)
- Network analysis (1)
- Netzwerkanalyse (1)
- New Public Management (1)
- Oberflächengitter (1)
- Oligospiroketal (1)
- Opto-mechanische Spannungen (1)
- Organgröße (1)
- Organische Solarzellen (1)
- Orgelpfeifen (1)
- Overtheits-Bedingung (1)
- PBPK (1)
- Paläogeographie (1)
- Parlamentsreform (1)
- Partikel Swarm Optimierung (1)
- Partizipation (1)
- Pathogenantwort (1)
- Pekuliargeschwindigkeiten (1)
- Peptid (1)
- Phasen Oszillatoren (1)
- Phasenübergänge (1)
- Phenol (1)
- Phonon-Polariton (1)
- Photophysik (1)
- Photosynthese (1)
- Polar 5 (1)
- Politik Evaluation (1)
- Poly(A)-Polymerasen (1)
- Polymer-Kristalle (1)
- Polymere (1)
- Prinzipal-Agent (1)
- Probabilistische Modelle (1)
- Process Mining (1)
- Programmeffekt (1)
- Protein-Metall-Wechselwirkung (1)
- Psycholinguistik (1)
- Pulsarwindnebel (1)
- Quantengravitation (1)
- Quartär (1)
- Quellenumkehr (1)
- R. Nahman b. Isaac (1)
- Radikalismus (1)
- Radikalrekombination (1)
- Raman Spektroskopie (1)
- Raman spectroscopy (1)
- Rechnen (1)
- Rechtsstaatsprinzip (1)
- Regge Kalkül (1)
- Reionisation (1)
- Renormierung (1)
- Ressourcenmanagement (1)
- Ringstörungen (1)
- Röntgenbeugung (1)
- SPARQL (1)
- Salmonella (1)
- Satzgefüge (1)
- Satzverarbeitung (1)
- Schiedsrichter (1)
- Schluckstörungen (1)
- Schnellläufersterne (1)
- Schnelltest (1)
- Schwarzerde (1)
- Sedimentation (1)
- Sedimentenabfolge (1)
- Sedimentfallen (1)
- Sedimenttransportroutine (1)
- Seismologie (1)
- Selbstständige (1)
- Siberian permafrost (1)
- Simulation (1)
- Softwareanalyse (1)
- Softwareentwicklung (1)
- Softwareentwicklungsprozesse (1)
- Softwaretechnik (1)
- Softwarevisualisierung (1)
- Softwarewartung (1)
- Solarzellen (1)
- Somaestetica (1)
- Somästhetik (1)
- Spannungsmuster (1)
- Spektroskopie (1)
- Spin-Schaum-Modelle (1)
- Spracherwerb (1)
- Sprachverständnis (1)
- Staatsrecht (1)
- Stab (1)
- Stabile Sauerstoff- und Kohlenstoffisotope (1)
- Statistische Datenanalyse (1)
- Staudämme (1)
- Sternaktivität (1)
- Sternpopulationen (1)
- Steuerung (1)
- Stoffkreislauf (1)
- Strahlungstransport (1)
- Stress (1)
- Stressantwort (1)
- Subsidenzgeschichte (1)
- Subvention (1)
- Sumatra Störung (1)
- Sumatra fault (1)
- Superkondensatoren (1)
- Supernovaüberrest (1)
- Synchronisationsanalyse (1)
- Synonyme (1)
- Süd-Türkei (1)
- Sünde (1)
- TIMSS (1)
- Talmud (1)
- Tarutung (1)
- Tas2r (1)
- Tas2r expression (1)
- Tas2r-Expression (1)
- Tas2rs (1)
- Tectona grandis (1)
- Tendürek Vulkan (1)
- Tendürek volcano (1)
- Testen (1)
- Trainer (1)
- Transaktivierungs-Experimente (1)
- Transkriptionsfaktoren (1)
- Tropen (1)
- Tschechische Republik (1)
- UV-Lasermikrodissektion (1)
- UV-laser microdissection (1)
- Ultrafast (1)
- Ultraschnell (1)
- Unstetiges Galerkin-Verfahren (1)
- Untergrund (1)
- Unternehmensgründung (1)
- Unterrichtsmethode (1)
- Urteil Köbler (1)
- Urteilsverzerrung (1)
- VMP1 (1)
- Verarbeitung seismischer Daten (1)
- Verbflexion (1)
- Verfassung (1)
- Verfassungsgericht (1)
- Verfeinerungslimes (1)
- Vernetzte Daten (1)
- Versionierung (1)
- Verstöße gegen EU-Recht durch nationale Gerichte (1)
- Verwaltungsreform (1)
- Videospiele (1)
- Videostudie (1)
- Vietnam (1)
- Virus (1)
- Visualisierung (1)
- Vorhersage (1)
- Vulnerabilität (1)
- Wachstumskinetik (1)
- Wassergehalt (1)
- Wasserpolitik (1)
- Wasserregulierung (1)
- Weichröntgenbeugung (1)
- Wellengeschwindigkeit (1)
- Welt (1)
- Wiederverheiraten (1)
- Wirkungsanalyse (1)
- Wirtschaft (1)
- Wortgrenzen (1)
- Zeitwahrnehmung (1)
- Zellkulturen (1)
- Zivilgesellschaft (1)
- Zwitterionen (1)
- Zypernbogen (1)
- active labor market policies (1)
- adolescents (1)
- aggression (1)
- agricultural production (1)
- aktive Weitewinkel-Seismik (1)
- algorithm configuration (1)
- algorithm scheduling (1)
- algorithm selection (1)
- alkine (1)
- allgemeine Wahlrecht (1)
- alteration of magnetite (1)
- alternative electron acceptors (1)
- analysis of efficiency (1)
- anorexia nervosa (1)
- answer set programming (1)
- antiferromagnetic (1)
- arbeitsbezogene Belastungen (1)
- articulated (1)
- assistive Technologien (1)
- assistive technologies (1)
- association rule mining (1)
- asymmetric demand (1)
- asymmetrische Nachfrage (1)
- atmosphere (1)
- atmospheric characterization (1)
- atmospheric modelling (1)
- attenuation tomography (1)
- automation (1)
- autophagy (1)
- auβerparlamentarische Gruppierungen (1)
- avere ed essere corpo (1)
- azide (1)
- azobenzene polymer films (1)
- baroclinic instability (1)
- battery (1)
- beginnende Kontinent-Kontinent Kollision (1)
- benzylisothiocyanate (1)
- bias (1)
- bioimpedance (1)
- biomaterials (1)
- biophysics (1)
- biosensor (1)
- biosignatures (1)
- biphenol (1)
- bitter taste perception (1)
- black earth (1)
- border area (1)
- boundary layer (1)
- bow shocks (1)
- bulk heterojunction (1)
- business process management (1)
- business start‐up (1)
- calculation (1)
- caloric restriction (1)
- carbon (1)
- cardiovascular risk (1)
- cell cuture (1)
- changeability (1)
- charge carrier dynamics (1)
- charge generation (1)
- children and adolescents (1)
- chimera Zustände (1)
- chimera state (1)
- chlamydomonas (1)
- chlamydomonas reinhardtii (1)
- chromanone (1)
- chromatin immunoprecipitation (1)
- chromone (1)
- circular statistics (1)
- citizen services (1)
- civic culture (1)
- claims based on EU state liability for national court decisions (1)
- classical compartment model (1)
- classification (1)
- clause combining (1)
- cleansing (1)
- click (1)
- climate change (1)
- cloud computing (1)
- cloud datacenter (1)
- coaching (1)
- cognitive functions (1)
- comparative subclauses (1)
- compost (1)
- computer science (1)
- constitution (1)
- constitutional court (1)
- constitutional law (1)
- constitutive relations (1)
- controlled source wide angle seismic (1)
- corpo fisico e corpo vissuto (1)
- cosmic-rays (1)
- cosmogenic nuclides (1)
- cosmology (1)
- coumarine (1)
- crustal stress (1)
- crustal structure of south central Turkey (1)
- crustal structure of the Eratosthenes Seamount (1)
- crystallization of magnetite nanoparticle (1)
- cyanobacteria (1)
- cytokinesis (1)
- data (1)
- database (1)
- database technology (1)
- decision making (1)
- decisions of national courts adjudicating at last instance (1)
- deformation source modeling (1)
- degree phrases (1)
- dendroclimatology (1)
- denudation (1)
- depressive Symptome (1)
- depressive symptoms (1)
- desensitization (1)
- development tools (1)
- dimensional stability (1)
- discontinuous Galerkin method (1)
- distances (1)
- dopingtest (1)
- dye (1)
- dynamic consolidation (1)
- dynamische Umsortierung (1)
- dysfunctional attitudies (1)
- dysfunktionale Einstellungen (1)
- dysphagia (1)
- earthquake location (1)
- economy (1)
- elasticity (1)
- electrodynamics (1)
- elliptic problems (1)
- elliptische Gleichungen (1)
- emg (1)
- empirical labor market studies (1)
- empirical studies (1)
- empirische Arbeitsmarktforschung (1)
- empirische Studien (1)
- energy efficiency (1)
- energy storage (1)
- englische Arbeiterklasse (1)
- entrepreneur (1)
- equation of motion (1)
- experiment (1)
- extra-parliamentary associations (1)
- extrasolar planets (1)
- extrasolare Planeten (1)
- extravasation-rate limited tissue model (1)
- eye movements during reading (1)
- eye-tracking (1)
- fertiliser (1)
- finance (1)
- flavonoid biosynthesis (1)
- floodplain sedimentation (1)
- flowering (1)
- fluorescence (1)
- free radical polymerization (1)
- freie radikalische Polymerisation (1)
- galactic centre (1)
- galaktisches Zentrum (1)
- galaxies (1)
- gamma-ray (1)
- ganzheitlich (1)
- gene regulation (1)
- geological processes (1)
- geologische Prozesse (1)
- geophyics (1)
- geothermischer Reservoire (1)
- global (1)
- global inversion (1)
- globale Inversion (1)
- glucosinolates (1)
- governance (1)
- green chemistry (1)
- ground-penetration radar (1)
- growth kinetics (1)
- hCG (1)
- halakha (1)
- halo (1)
- health promotion (1)
- high-redshift galaxies (1)
- high-velocity-clouds (1)
- historical syntax (1)
- historische Syntax (1)
- hoch rotverschobene Galaxien (1)
- holistic (1)
- holocene (1)
- hydrophobe Moleküle (1)
- hydrophobic molecules (1)
- hydropower dam impact (1)
- hydrothermal (1)
- imidazolium (1)
- impact analysis (1)
- impulsive stimulated Raman scattering (1)
- impulsive stimulierte Raman Streuung (1)
- in-situ atomic force microscopy (1)
- in-vitro diagnostic (1)
- incipient continent-continent collision (1)
- indischer Monsun (1)
- induzierten Seismizität (1)
- influenza (1)
- interaction (1)
- interaction analysis (1)
- inverse probability weighting (1)
- irrigation (1)
- isometric muscle action (1)
- jewish law (1)
- job search behavior (1)
- judaism (1)
- kardiovaskuläres Risiko (1)
- kinetic modeling (1)
- kinetische Modellierung (1)
- kleine Parameter (1)
- knowledge discovery (1)
- kognitive Funktionen (1)
- komparative Nebensätze (1)
- konstitutive Gleichungen (1)
- kosmogene Nuklide (1)
- krustale Spannungen (1)
- labor market policy (1)
- landing positions (1)
- landwirtschaftliche Produktion (1)
- language comprehension (1)
- lead (1)
- learning group language (1)
- left periphery (1)
- lichtinduziert (1)
- light induced (1)
- linguistic concepts in Talmud (1)
- linke Peripherie (1)
- linked data (1)
- lipids (1)
- lithium sulfur battery (1)
- local government (1)
- logic (1)
- logical signaling networks (1)
- logische Signalnetzwerke (1)
- mAb Disposition (1)
- mAb disposition (1)
- magnetische Eigenschaften (1)
- main memory computing (1)
- manifold (1)
- map reduce (1)
- markets (1)
- mathematical modeling (1)
- mathematische Modellierung (1)
- mechanomyography (1)
- media violence (1)
- metabolic costs (1)
- metabolic networks (1)
- metabolische Kosten (1)
- metabolische Netzwerke (1)
- metabolites (1)
- metal/polymer interfaces (1)
- methanogenic archaea (1)
- methods (1)
- microarray (1)
- microcystin (1)
- microseismicity (1)
- missing data (1)
- model (1)
- model of Bayesian saccade planning (1)
- model-driven engineering (1)
- modelgetriebene Entwicklung (1)
- moisture content (1)
- moment tensor (1)
- multi-scale (1)
- multiplex assay (1)
- murine Tas2rs (1)
- music pedagogy (1)
- musikalische Fachsprache (1)
- myofascial oscillations (1)
- myofasziale Oszillationen (1)
- nachhaltige Chemie (1)
- nachwachsende Rohstoffe (1)
- new public management (1)
- nicht geminale Rekombination (1)
- nichtgleichgewichts Dynamik (1)
- nichtlineare Optik (1)
- non geminate recombination (1)
- non-linear optics (1)
- nonprofit (1)
- observations (1)
- occupational burden (1)
- offene Sternhaufen und stellare Assoziationen (1)
- online assistance (1)
- open clusters and stellar associations (1)
- opto-mechanical stresses (1)
- organ pipes (1)
- organ size (1)
- organic semiconductor (1)
- organische Halbleiter (1)
- organischer Dünger (1)
- overtness requirement (1)
- oxygen and carbon stable isotopes (1)
- paleogeography (1)
- parallel (1)
- parallel solving (1)
- paralleles Lösen (1)
- parliamentary reforms (1)
- participation (1)
- particle swarm optimisation (1)
- pathogen bacteria (1)
- pathogen response (1)
- pathogene Bakterien (1)
- peculiar velocities (1)
- peptide (1)
- permafrost (1)
- pharyngale Schluckphase (1)
- pharyngeal phase of swallowing (1)
- phase oscillators (1)
- phase transitions (1)
- phenol (1)
- phonon polariton (1)
- photo physics (1)
- photoinduced dynamics (1)
- photosynthesis (1)
- physiologische Verfahren (1)
- plateau uplift (1)
- platform chemicals (1)
- point-of-care (1)
- polar (1)
- policy evaluation (1)
- polymer (1)
- polymer crystal orientation (1)
- polymers (1)
- prediction (1)
- prefetching (1)
- probabilistic models (1)
- process mining (1)
- program effect (1)
- protein-metal interaction (1)
- psycholinguistics (1)
- psychophysiological measures (1)
- quantum gravity (1)
- quaternary (1)
- query matching (1)
- rabbinische Literatur (1)
- radiative transfer (1)
- radical recombination (1)
- radicalism (1)
- referees (1)
- regge calculus (1)
- reionization (1)
- relative-like clauses (1)
- relativähnliche Sätze (1)
- remarriage (1)
- renewables (1)
- renormalization and refinement limit (1)
- resource management (1)
- ring-fault (1)
- rockslide (1)
- rod (1)
- rule of law (1)
- runaway stars (1)
- runtime behavior (1)
- räumliche Identität (1)
- räumlicher Wettbewerb (1)
- sake of god (1)
- salmonella (1)
- sediment transport (1)
- sediment trap (1)
- sedimentary record (1)
- seismic (1)
- seismic attributes (1)
- seismic sequence stratigraphy (1)
- seismische Attribute (1)
- seismische Geschwindigkeiten (1)
- seismische Sequenzstratigraphie (1)
- seismische Stapelungs-Methode (1)
- seismology (1)
- selbstheilende Materialien (1)
- self-healing materials (1)
- self-employed (1)
- sentence processing (1)
- sibirischen Permafrost (1)
- sign language (1)
- simulations (1)
- sin (1)
- small parameter (1)
- soccer (1)
- socialisation (1)
- soft x-ray diffraction (1)
- software analysis (1)
- software development (1)
- software development processes (1)
- software engineering (1)
- software maintenance (1)
- software visualization (1)
- soil water content (1)
- solar cells (1)
- source duration (1)
- source inversion (1)
- southern Turkey (1)
- spatial competition (1)
- spatial identity (1)
- spectroscopy (1)
- spin foams (1)
- stellar activity (1)
- stellar populations (1)
- stellar variability (1)
- stochastic Petri nets (1)
- stochastische Petri Netze (1)
- stoichiometric modeling (1)
- stress (1)
- stress pattern (1)
- stress response (1)
- strict liability under public law (1)
- stöchiometrische Modellierung (1)
- subsidence history (1)
- subsidy (1)
- subsurface (1)
- supercapacitors (1)
- supernova remnants (1)
- surface relief grating (1)
- synonym discovery (1)
- taste (1)
- teacher (1)
- teaching methods (1)
- technical music terminology (1)
- tectonic stress (1)
- tektonische Spannungen (1)
- terra preta (1)
- testing (1)
- thermal wind equation (1)
- thermische Windgleichung (1)
- time perception (1)
- time resolved spectroskopy (1)
- transactivation assay (1)
- transcription factors (1)
- transient grating (1)
- transientes Gitter (1)
- transmission spectroscopy (1)
- tropics (1)
- type 2 diabetes (1)
- unionsrechtliche Staathaftung (1)
- unionsrechtlicher Staatshaftungsanspruch bei judikativem Unrecht (1)
- unipolar affective disorders (1)
- unipolare affektive Störungen (1)
- universal suffrage (1)
- user interfaces (1)
- velocity structure (1)
- verb inflection (1)
- versioning (1)
- verteilte Datenbanken (1)
- video games (1)
- video study (1)
- virtualisierte IT-Infrastruktur (1)
- virus (1)
- visualization (1)
- volunteer management (1)
- volunteering (1)
- vulnerability (1)
- water management (1)
- water policy (1)
- wave velocities (1)
- weight reduction (1)
- wood modification (1)
- word boundaries (1)
- word skipping (1)
- zeitaufgelöste Spektroskopie (1)
- zeitverzögerte Selbstkopplung (1)
- zirkulare Statistik (1)
- Änderbarkeit (1)
- Überspringen von Wörtern (1)
- öffentlich-rechtliche Gefährdungshaftung (1)
- öffentliche Gesundheit (1)
- ‘li-shmah/she-lo li-shmah’ (1)
Institute
- Institut für Biochemie und Biologie (37)
- Institut für Physik und Astronomie (25)
- Institut für Geowissenschaften (19)
- Wirtschaftswissenschaften (15)
- Institut für Chemie (13)
- Historisches Institut (12)
- Institut für Informatik und Computational Science (10)
- Department Psychologie (9)
- Hasso-Plattner-Institut für Digital Engineering gGmbH (9)
- Institut für Ernährungswissenschaft (8)
The atmosphere over the Arctic Ocean is strongly influenced by the distribution of sea ice and open water. Leads in the sea ice produce strong convective fluxes of sensible and latent heat and release aerosol particles into the atmosphere. They increase the occurrence of clouds and modify the structure and characteristics of the atmospheric boundary layer (ABL) and thereby influence the Arctic climate.
In the course of this study aircraft measurements were performed over the western Arctic Ocean as part of the campaign PAMARCMIP 2012 of the Alfred Wegener Institute for Polar and Marine Research (AWI). Backscatter from aerosols and clouds within the lower troposphere and the ABL were measured with the nadir pointing Airborne Mobile Aerosol Lidar (AMALi) and dropsondes were launched to obtain profiles of meteorological variables. Furthermore, in situ measurements of aerosol properties, meteorological variables and turbulence were part of the campaign. The measurements covered a broad range of atmospheric and sea ice conditions.
In this thesis, properties of the ABL over Arctic sea ice with a focus on the influence of open leads are studied based on the data from the PAMARCMIP campaign. The height of the ABL is determined by different methods that are applied to dropsonde and AMALi backscatter profiles. ABL heights are compared for different flights representing different conditions of the atmosphere and of sea ice and open water influence. The different criteria for ABL height that are applied show large variation in terms of agreement among each other, depending on the characteristics of the ABL and its history. It is shown that ABL height determination from lidar backscatter by methods commonly used under mid-latitude conditions is applicable to the Arctic ABL only under certain conditions. Aerosol or clouds within the ABL are needed as a tracer for ABL height detection from backscatter. Hence an aerosol source close to the surface is necessary, that is typically found under the present influence of open water and therefore convective conditions. However it is not always possible to distinguish residual layers from the actual ABL. Stable boundary layers are generally difficult to detect.
To illustrate the complexity of the Arctic ABL and processes therein, four case studies are analyzed each of which represents a snapshot of the interplay between atmosphere and underlying sea ice or water surface. Influences of leads and open water on the aerosol and clouds within the ABL are identified and discussed. Leads are observed to cause the formation of fog and cloud layers within the ABL by humidity emission. Furthermore they decrease the stability and increase the height of the ABL and consequently facilitate entrainment of air and aerosol layers from the free troposphere.
Cyanobacteria produce about 40 percent of the world’s primary biomass, but also a variety of often toxic peptides such as microcystin. Mass developments, so called blooms, can pose a real threat to the drinking water supply in many parts of the world. This study aimed at characterizing the biological function of microcystin production in one of the most common bloom-forming cyanobacterium Microcystis aeruginosa.
In a first attempt, the effect of elevated light intensity on microcystin production and its binding to cellular proteins was studied. Therefore, conventional microcystin quantification techniques were combined with protein-biochemical methods. RubisCO, the key enzyme for primary carbon fixation was a major microcystin interaction partner. High light exposition strongly stimulated microcystin-protein interactions. Up to 60 percent of the total cellular microcystin was detected bound to proteins, i.e. inaccessible for standard quantification procedures. Underestimation of total microcystin contents when neglecting the protein fraction was also demonstrated in field samples. Finally, an immuno-fluorescence based method was developed to identify microcystin producing cyanobacteria in mixed populations.
The high light induced microcystin interaction with proteins suggested an impact of the secondary metabolite on the primary metabolism of Microcystis by e.g. modulating the activity of enzymes. For addressing that question, a comprehensive GC/MS-based approach was conducted to compare the accumulation of metabolites in the wild-type of Microcystis aeruginosa PCC 7806 and the microcystin deficient ΔmcyB mutant. From all 501 detected non-redundant metabolites 85 (17 percent) accumulated significantly different in either of both genotypes upon high light exposition. Accumulation of compatible solutes in the ΔmcyB mutant suggests a role of microcystin in fine-tuning the metabolic flow to prevent stress related to excess light, high oxygen concentration and carbon limitation.
Co-analysis of the widely used model cyanobacterium Synechocystis PCC 6803 revealed profound metabolic differences between species of cyanobacteria. Whereas Microcystis channeled more resources towards carbohydrate synthesis, Synechocystis invested more in amino acids. These findings were supported by electron microscopy of high light treated cells and the quantification of storage compounds. While Microcystis accumulated mainly glycogen to about 8.5 percent of its fresh weight within three hours, Synechocystis produced higher amounts of cyanophycin. The results showed that the characterization of species-specific metabolic features should gain more attention with regard to the biotechnological use of cyanobacteria.
Protein-metal coordination complexes are well known as active centers in enzymatic catalysis, and to contribute to signal transduction, gas transport, and to hormone function. Additionally, they are now known to contribute as load-bearing cross-links to the mechanical properties of several biological materials, including the jaws of Nereis worms and the byssal threads of marine mussels. The primary aim of this thesis work is to better understand the role of protein-metal cross-links in the mechanical properties of biological materials, using the mussel byssus as a model system. Specifically, the focus is on histidine-metal cross-links as sacrificial bonds in the fibrous core of the byssal thread (Chapter 4) and L-3,4-dihydroxyphenylalanine (DOPA)-metal bonds in the protective thread cuticle (Chapter 5).
Byssal threads are protein fibers, which mussels use to attach to various substrates at the seashore. These relatively stiff fibers have the ability to extend up to about 100 % strain, dissipating large amounts of mechanical energy from crashing waves, for example. Remarkably, following damage from cyclic loading, initial mechanical properties are subsequently recovered by a material-intrinsic self-healing capability. Histidine residues coordinated to transition metal ions in the proteins comprising the fibrous thread core have been suggested as reversible sacrificial bonds that contribute to self-healing; however, this remains to be substantiated in situ. In the first part of this thesis, the role of metal coordination bonds in the thread core was investigated using several spectroscopic methods. In particular, X-ray absorption spectroscopy (XAS) was applied to probe the coordination environment of zinc in Mytilus californianus threads at various stages during stretching and subsequent healing. Analysis of the extended X-ray absorption fine structure (EXAFS) suggests that tensile deformation of threads is correlated with the rupture of Zn-coordination bonds and that self-healing is connected with the reorganization of Zn-coordination bond topologies rather than the mere reformation of Zn-coordination bonds. These findings have interesting implications for the design of self-healing metallopolymers.
The byssus cuticle is a protective coating surrounding the fibrous thread core that is both as hard as an epoxy and extensible up to 100 % strain before cracking. It was shown previously that cuticle stiffness and hardness largely depend on the presence of Fe-DOPA coordination bonds. However, the byssus is known to concentrate a large variety of metals from seawater, some of which are also capable of binding DOPA (e.g. V). Therefore, the question arises whether natural variation of metal composition can affect the mechanical performance of the byssal thread cuticle. To investigate this hypothesis, nanoindentation and confocal Raman spectroscopy were applied to the cuticle of native threads, threads with metals removed (EDTA treated), and threads in which the metal ions in the native tissue were replaced by either Fe or V. Interestingly, replacement of metal ions with either Fe or V leads to the full recovery of native mechanical properties with no statistical difference between each other or the native properties. This likely indicates that a fixed number of metal coordination sites are maintained within the byssal thread cuticle – possibly achieved during thread formation – which may provide an evolutionarily relevant mechanism for maintaining reliable mechanics in an unpredictable environment.
While the dynamic exchange of bonds plays a vital role in the mechanical behavior and self-healing in the thread core by allowing them to act as reversible sacrificial bonds, the compatibility of DOPA with other metals allows an inherent adaptability of the thread cuticle to changing circumstances. The requirements to both of these materials can be met by the dynamic nature of the protein-metal cross-links, whereas covalent cross-linking would fail to provide the adaptability of the cuticle and the self-healing of the core. In summary, these studies of the thread core and the thread cuticle serve to underline the important and dynamic roles of protein-metal coordination in the mechanical function of load-bearing protein fibers, such as the mussel byssus.
Cette recherche a pour objet l'articulation entre les dimensions anthropologiques et sociologiques de l'anthropologie philosophique de Helmuth Plessner (1892-1985). Elles procèdent selon trois axes. Je m'efforce (1) d'offrir une synthèse de l'anthropologie philosophique plessnerienne afin (2) de reconstituer les conditions de possibilité du social au stade humain de l'organique. Le troisième axe (3) correspond, enfin, à l'analyse des limites structurelles du social à partir de ses deux dimensions constitutives : l'individuel (limites ontogénétiques, comportementales et inter-personnelles) et le collectif (limites culturelles, intra- et inter-culturelles).