Refine
Year of publication
Document Type
- Doctoral Thesis (498) (remove)
Keywords
- Nachhaltigkeit (32)
- Sustainability (11)
- Biodiversität (10)
- Entrepreneurship (9)
- Landwirtschaft (8)
- Tourismus (8)
- sustainability (7)
- Pestizid (6)
- Arzneimittel (5)
- Agriculture (4)
- Energiewende (4)
- Governance (4)
- Negotiation (4)
- Transformation (4)
- Unternehmen (4)
- Unternehmensgründung (4)
- biodiversity (4)
- Abwasser (3)
- Arbeitsmarkt (3)
- Bürgerbeteiligung (3)
- Deutschland (3)
- Elbe (3)
- Energiepolitik (3)
- Entwicklungsländer (3)
- Erneuerbare Energien (3)
- Führung (3)
- Gesundheitswesen (3)
- Grundschule (3)
- Heidekraut (3)
- Internationaler Vergleich (3)
- Internet (3)
- Kommunikation (3)
- Kulturlandschaft (3)
- Lehrerbildung (3)
- Management (3)
- Nachhaltige Entwicklung (3)
- Naturschutz (3)
- Personalpolitik (3)
- Steuerungsprozesse (3)
- Stickstoff (3)
- Tourism (3)
- Umweltanalytik (3)
- Unternehmenskultur (3)
- Verantwortung (3)
- pesticides (3)
- social-ecological systems (3)
- Ökosystem (3)
- Abwasseranalyse (2)
- Agency-Theorie (2)
- Arbeitsmotivation (2)
- Aufsichtsrat (2)
- Autonomes Fahren (2)
- Beweidung (2)
- Bildung (2)
- Biodegradation (2)
- Biofilm (2)
- Biografieforschung (2)
- Buchenwald (2)
- Calluna vulgaris (2)
- China (2)
- Cultural Policy (2)
- Depression (2)
- Deschampsia flexnosa (2)
- Digitales Lernen (2)
- Emission (2)
- Energieeffizienz (2)
- Energieversorgung (2)
- Energy Policy (2)
- Entscheidungsverhalten (2)
- Erzieher (2)
- Ethiopia (2)
- Europäische Union (2)
- Familienbetrieb (2)
- Gesundheit (2)
- Habitat (2)
- Healthcare (2)
- Heide (2)
- Inklusion (2)
- Israel (2)
- Klimaänderung (2)
- Kontamination (2)
- Kooperation (2)
- Kulturpolitik (2)
- Käfer (2)
- Künstliche Intelligenz (2)
- Laufkäfer (2)
- Lehrer (2)
- Lehrkräfte (2)
- Massenspektrometrie (2)
- Meerwasser (2)
- Mittelstand (2)
- Monitoring (2)
- Network Analysis (2)
- Netzwerkanalyse (2)
- Niedersachsen (2)
- Nutzerverhalten (2)
- Nährstoffkreislauf (2)
- Nährstoffmangel (2)
- Ostsee (2)
- Participation (2)
- Pharmaceuticals (2)
- Photolysis (2)
- Prävention (2)
- Psychische Gesundheit (2)
- Psychische Störung (2)
- Quecksilber (2)
- Reiseveranstalter (2)
- Reiseverhalten (2)
- Renewable Energies (2)
- Schadstoff (2)
- Sediment (2)
- Stoffstrommanagement (2)
- Sustainability Research (2)
- Systemtheorie (2)
- Teer (2)
- Training (2)
- Umweltbelastung (2)
- Umweltbezogenes Management (2)
- Umweltbilanz (2)
- Umweltkommunikation (2)
- Unternehmenserfolg (2)
- Verhandlung (2)
- Vorstand (2)
- Wasserverschmutzung (2)
- Wissensmanagement (2)
- Wärmespeicher (2)
- cultural landscape (2)
- developing countries (2)
- entrepreneurship (2)
- knowledge management (2)
- landscape ecology (2)
- nitrogen (2)
- nutrient limitation (2)
- systems theory (2)
- Ästhetik (2)
- Äthiopien (2)
- Ökologie (2)
- AVEM (1)
- Abbau (1)
- Abgasrückführung (1)
- Abwasserbelastung (1)
- Abwasserentsorgung (1)
- Abwassermarkierungsstoffe (1)
- Abwasserreinigung (1)
- Abwasserwirtschaft (1)
- Abwärme (1)
- Achtsamkeit (1)
- Activated Sludge (1)
- Aesthetics (1)
- Afghanistan (1)
- African Union (1)
- Agrarpolitik (1)
- Agrarsystem (1)
- Aktivierung (1)
- Aktivkohle (1)
- Alcohol Abuse (1)
- Alcohol Consumption (1)
- Algenkultur (1)
- Alkoholismus (1)
- Alkoholkonsum (1)
- Alkoholmißbrauch (1)
- Allergen (1)
- Alltagsmobilität (1)
- Altersarmut (1)
- Alterung (1)
- Altes Land (1)
- Altlast (1)
- Altlastsanierung (1)
- Ambulante Behandlung (1)
- Anden (1)
- Anthropomorphismus (1)
- Antibiotikum (1)
- Anticancer Drug (1)
- Antriebstechnik (1)
- Aquatic environment (1)
- Arbeitnehmer (1)
- Arbeitsbedingungen (1)
- Arbeitsleistung (1)
- Arbeitslosigkeit (1)
- Arbeitsökonomie (1)
- Architektur (1)
- Arctic Atmosphere (1)
- Arktis (1)
- Armenien (1)
- Aromatische Verbindungen (1)
- Arrangement of terms (1)
- Artenreichtum (1)
- Artificial Intelligence (1)
- Atmosphäre (1)
- Auditing (1)
- Aue (1)
- Augenfolgebewegung (1)
- Ausländisches Unternehmen (1)
- Ausstellung (1)
- Automobilabgas (1)
- Autonomie (1)
- Autonomy (1)
- Außerschulische Bildung (1)
- Bakterien (1)
- Baltic Sea (1)
- Bank (1)
- Bank Bailout (1)
- Bankenkrise (1)
- Bankenrettung (1)
- Banking Crisis (1)
- Baum (1)
- Baustoff (1)
- Bee (1)
- Bees (1)
- Benutzerfreundlichkeit (1)
- Benzopyrane (1)
- Berufliche Kompetenz (1)
- Berufserfahrung (1)
- Berufsvorbereitung (1)
- Beschäftigungspflicht (1)
- Bestäuber (1)
- Betrieb / Umwelt (1)
- Betriebswirtschaftslehre (1)
- Beurteilung (1)
- Bevölkerungsentwicklung (1)
- Bevölkerungsökonomie (1)
- Biene (1)
- Bienen (1)
- Big Data (1)
- Bildanalyse (1)
- Bildungssystem (1)
- Bildverstehen (1)
- Bildwissenschaft (1)
- Bioassay (1)
- Biochar (1)
- Biochemie (1)
- Biochemistry (1)
- Biocides (1)
- Biodegradability (1)
- Biodiesel (1)
- Biodiversity (1)
- Bioethics (1)
- Bioethik (1)
- Biofuel (1)
- Biographical Research (1)
- Biokraftstoff (1)
- Biologische Abbaubarkeit (1)
- Biologische Landwirtschaft (1)
- Biomass (1)
- Biomass burning (1)
- Biomasse (1)
- Biosphere Reserve (1)
- Biospärenreservat (1)
- Biotechnologie (1)
- Biotest (1)
- Biozide (1)
- Boden (1)
- Bodenbehandlung (1)
- Bodenschutz (1)
- Bodenschutzrecht (1)
- Bondholder Relations (1)
- Brunnen (1)
- Call Center (1)
- Chemische Waffe (1)
- Christliche Ethik (1)
- Citizen Participation (1)
- Citizen Science (1)
- Civic Engagement (1)
- Climate Change (1)
- Climate Simulation (1)
- Coastel environment (1)
- Cognition (1)
- Collaborative Initiative (1)
- Compensation (1)
- Competition (1)
- Complexity (1)
- Computerspiel (1)
- Consulting in further education (1)
- Consumer Behaviour (1)
- Consumer Protection (1)
- Consumer Research (1)
- Contemporary Literature (1)
- Controlling (1)
- Cooperation (1)
- Corporate Bond (1)
- Corporate Disclosure (1)
- Corporate Entrepreneurship (1)
- Corporate Social Responsibility (1)
- Cultural Management (1)
- DNA (1)
- DNS (1)
- Damascus (1)
- Damaskus (1)
- Data Mining (1)
- Database (1)
- Datenanalyse (1)
- Datenbank (1)
- Datenschutz (1)
- Day Care Center (1)
- Day Care Centre (1)
- Decision Making (1)
- Decision-Making (1)
- Degradation (1)
- Deregulation (1)
- Deregulierung (1)
- Derivate (1)
- Derivatives (1)
- Desinfektionsmittel (1)
- Deutsch als Zweitsprache (1)
- Deutschunterricht (1)
- Developing countries (1)
- Diesel (1)
- Diesel Particulate Filter (1)
- Dieselkraftstoff (1)
- Dieselmotor (1)
- Digital Culture (1)
- Digital Learning (1)
- Digitale Kultur (1)
- Digitalisierung (1)
- Dignity (1)
- Discourse Studies (1)
- Discrimination (1)
- Disease Resistance (1)
- Diskriminierung (1)
- Diversität (1)
- Drahtschmiele (1)
- Driving Behaviour (1)
- Druckluft (1)
- Düngung (1)
- E-Assessment (1)
- E-Learning (1)
- EU (1)
- EU Water Framework Directive (1)
- Early Childhood Education (1)
- Economic behavior (1)
- Ecosystem services (1)
- Ecuador (1)
- Educator (1)
- Effizienz (1)
- Effizienzanalyse (1)
- Egypt (1)
- Ehrenamtliche Tätigkeit (1)
- Eigeninitiative (1)
- Eigentum (1)
- Eingliederungshilfe (1)
- Eisenbahn (1)
- Electronic Commerce (1)
- Elektrifizierung (1)
- Elektromobilität (1)
- Elektronische Musik (1)
- Elemente (1)
- Embeddedness (1)
- Emission model (1)
- Emissionsmodell (1)
- Emotion regulation (1)
- Emotionales Lernen (1)
- Emotionsarbeit (1)
- Emphysem (1)
- Empirische Forschung (1)
- Employee Health (1)
- Employee Management (1)
- Energie (1)
- Energiemanagement (1)
- Energiepreis (1)
- Energieverbrauch (1)
- Energiewirtschaft (1)
- Energy Prices (1)
- Energy Transition (1)
- Energy supply (1)
- Entdeckendes Lernen (1)
- Entrepeneurship (1)
- Entscheidungsprozess (1)
- Environmental Communication (1)
- Environmental Monitoring (1)
- Environmental balance (1)
- Environmental governance (1)
- Epiphyten (1)
- Erfolgsfaktor (1)
- Erkenntnistheorie (1)
- Erneuerbare Ressourcen (1)
- Ernährungslage (1)
- Error Management (1)
- Erwachsenwerden (1)
- Erzieherin (1)
- Erziehung (1)
- Erzähltechnik (1)
- Estrogen (1)
- Ethik (1)
- Europa (1)
- European Union (1)
- European dimension (1)
- Europäisierung (1)
- Everyday Mobility (1)
- Exportverhalten (1)
- Eye Tracking (1)
- Fachberatung (1)
- Fahrerverhalten (1)
- Familienunternehmen (1)
- Family Firm (1)
- Fatty Acids (1)
- Federal Soil Protection Act (1)
- Fehleranalyse (1)
- Fehlerbehandlung (1)
- Fehlermanagement (1)
- Fehlerverhütung (1)
- Feldversuch (1)
- Ferntourismus (1)
- Feuchtgebiet (1)
- Fibroblast (1)
- Filmanalyse (1)
- Financial Reporting (1)
- Financial Stability (1)
- Finanzierung (1)
- Finanzstabilität (1)
- Fischerei (1)
- Flammschutzmittel (1)
- Flechten (1)
- Fließgewässer (1)
- Flood (1)
- Fonds (1)
- Food Security (1)
- Forschung und Entwicklung (1)
- Forschungsevaluation (1)
- Fotografie (1)
- Franchising (1)
- Freedom (1)
- Freiheit (1)
- Fremdenverkehr (1)
- Fremdkapital (1)
- Fremdsprachenlernen (1)
- Freundschaft (1)
- Frühkindliche Bildung (1)
- Frühwarnsystem (1)
- Funktionalismus (1)
- Fusion (1)
- Führungskraft (1)
- Führungskräfte (1)
- Führungskräfteentwicklung (1)
- GIS (1)
- Game Studies (1)
- Gamification (1)
- Gamifizierung (1)
- Ganzheitliches Denken (1)
- Ganztagsschule (1)
- Gastronomie (1)
- Gegenwartsliteratur (1)
- Geistige Behinderung (1)
- Gemeindeverfassung (1)
- Gender Roles (1)
- Generationengerechtigkeit (1)
- Genexpression (1)
- Genossenschaftsbank (1)
- Genzken, Isa (1)
- Geoinformationssystem (1)
- Gerechtigkeit (1)
- Germany (1)
- Geschlechterrollen (1)
- Geschäftsführung (1)
- Gesetzgebung (1)
- Gesundheitserziehung (1)
- Gesundheitsförderung (1)
- Gesundheitspolitik (1)
- Getränkehandel (1)
- Gewässer (1)
- Gewässerbelastung (1)
- Gewässerkunde (1)
- Globalisierung (1)
- Graslandschaft (1)
- Grundschüler (1)
- Grundwasser (1)
- Grundwasserverschmutzung (1)
- Gruppendynamik (1)
- Gründungsförderung (1)
- Gymnasium (1)
- HPLC-ESI-MS/MS (1)
- HPLC-MS (1)
- Handicraft (1)
- Handwerk (1)
- Harnstoff (1)
- Harz (1)
- Haushaltschemikalie (1)
- Health (1)
- Health Education (1)
- Heatherlandmanagement (1)
- Heavy metall pollution (1)
- Heidemanagement (1)
- Heimatpresse (1)
- Herbizid (1)
- Hirnfunktion (1)
- Hochschule (1)
- Hochschulinkubatoren (1)
- Hochschulwahl (1)
- Hochwasser (1)
- Holocene (1)
- Homelessness (1)
- Hotelgewerbe (1)
- Human Resources (1)
- Hydrography (1)
- Hydrological tracers (1)
- ITE-Netzwerk (1)
- ITE-network (1)
- Ikonographie (1)
- Image Analysis (1)
- Immigrant (1)
- Immunity (1)
- Inclusion (1)
- Indien (1)
- Individuality (1)
- Individuum (1)
- Informationsmanagement (1)
- Innovationsbereitschaft (1)
- Innovationsmanagement (1)
- Ins (1)
- Insekten (1)
- Insolation (1)
- Institutional Change (1)
- Institutional change (1)
- Institutionalismus (1)
- Institutioneller Wandel (1)
- Insurance (1)
- Integration (1)
- Integration Policy (1)
- Integrationspolitik (1)
- Interaktionsmodell (1)
- Interaktive Kunst (1)
- Intercultural Education (1)
- Interdisziplinäre Forschung (1)
- Interessenverband (1)
- Intergenerational justice (1)
- Interkulturelle Erziehung (1)
- Internationale Organisation (1)
- Internationalisierung (1)
- Investition (1)
- Involvement (1)
- Ionisierung (1)
- Jordan (1)
- Jugend (1)
- Kaltes Plasma (1)
- Kaufentscheidung (1)
- Kindergarten (1)
- Kindergarten teacher (1)
- Kindertageseinrichtung (1)
- Kindertagesstätte (1)
- Kleinbauer (1)
- Kleinunternehmen (1)
- Klimamodell (1)
- Klimasimulation (1)
- Klimawandel (1)
- Kläranlage (1)
- Kognition (1)
- Kollaborative Initiative (1)
- Kollisionszelle (1)
- Kommunale Selbstverwaltung (1)
- Kommunalverwaltung (1)
- Kommunikationstraining (1)
- Kompetenz (1)
- Komplexität (1)
- Konditionengestaltung (1)
- Konfliktlösung (1)
- Konsum (1)
- Konsumentenverhalten (1)
- Korrosion (1)
- Kraftstofffilter (1)
- Krankheitsresistenz (1)
- Kreditgenossenschaft (1)
- Kulturelle Entwicklung (1)
- Kulturelle Kooperation (1)
- Kulturkonflikt (1)
- Kulturmanagement (1)
- Kulturraum (1)
- Kulturwirtschaft (1)
- Kunstvermittlung (1)
- Kündigungsschutz (1)
- Küstengebiet (1)
- LISREL (1)
- Labor Economics (1)
- Labor market (1)
- Landnutzung (1)
- Landschaftsschutz (1)
- Landschaftsökologie (1)
- Law (1)
- Leadership (1)
- Lean Management (1)
- Lean Production (1)
- Learning Process (1)
- Lebenslauf (1)
- Lebensraum (1)
- Lebensunterhalt (1)
- Legislation (1)
- Lehrerausbildung (1)
- Lehrergesundheit (1)
- Leistungsbewertung (1)
- Leistungsmessung (1)
- Leitbild (1)
- Lernarrangement (1)
- Lerngruppe (1)
- Lernprozess (1)
- Lernsoftware (1)
- Leverage-Effekt (1)
- Lieferketten (1)
- Lipids (1)
- Liquiditätsrisiko (1)
- Lobbyismus (1)
- Lower Saxony (1)
- Luftaustausch (1)
- Luftverschmutzung (1)
- Lunge (1)
- Ländliche Räume (1)
- Ländlicher Raum (1)
- Löhne (1)
- Lüneburg university (1)
- Lüneburg/Universität (1)
- Lüneburger Heide (1)
- Machine Learning (1)
- Makroinvertebraten (1)
- Marketing (1)
- Mass spectrometry (1)
- Massentourismus (1)
- Material Flow Analysis (1)
- Material Flow Management (1)
- Mathematikunterricht (1)
- Mathematische Kompetenz (1)
- Medien (1)
- Mediengeschichte (1)
- Meereis (1)
- Mehrsprachigkeit (1)
- Menschenhandel (1)
- Menschenwürde (1)
- Mental Disorder (1)
- Mental Health (1)
- Mental Illness (1)
- Mercury (1)
- Migrationshintergrund (1)
- Mill, John Stuart (1)
- Mindset (1)
- Mitarbeiterführung (1)
- Mitarbeitergesundheit (1)
- Mitbestimmung (1)
- Mittelalter (1)
- Mobilität (1)
- Mobilitätsverhalten (1)
- Moos (1)
- Motivation (1)
- Motorenöl (1)
- Multilingualism (1)
- Music (1)
- Music Promotion (1)
- Musik (1)
- Musikförderung (1)
- Mykorrhiza (1)
- Nachfolge (1)
- Nachhaltigkeitsforschung (1)
- Nachsorge (1)
- Nahwärmeversorgung (1)
- Namibia (1)
- Natural Language Processing (1)
- Neoinstitutionalismus (1)
- Network Data (1)
- Netzwerk (1)
- Netzwerkdaten (1)
- New Economy (1)
- Nichtstaatliche Organisation (1)
- Niederschlag (1)
- Non-Governmental Organisation (1)
- Nordseeküste (1)
- Nährstoffaufnahme (1)
- Nährstoffbilanz (1)
- Obdachlosigkeit (1)
- Oberflächengewässer (1)
- Oberflächenwasser (1)
- Obstbau (1)
- Obstruktive Ventilationsstörung (1)
- Older Workers (1)
- Online Behaviour (1)
- Online-Befragung (1)
- Online-Marketing (1)
- Onlineverhalten (1)
- Open Access (1)
- Open Science (1)
- Optimierung (1)
- Optimization (1)
- Optionsschein (1)
- Organisational Development (1)
- Organisationsentwicklung (1)
- Organisationstheorie (1)
- Organisationswandel (1)
- Organisatorisches Lernen (1)
- Ostmitteleuropa (1)
- Outsourcing (1)
- Ozon (1)
- Ozonisierung (1)
- Ozonungsprodukte (1)
- PFCs (1)
- Palaeoclimate (1)
- Paläoklima (1)
- Partizipation (1)
- Peer (1)
- Personalauswahl (1)
- Personalentwicklung (1)
- Personalmarketing (1)
- Personalwesen (1)
- Personenkraftwagen (1)
- Peru (1)
- Pesticide formulation (1)
- Pflanzen (1)
- Pflanzenschutzmittel (1)
- Pflege (1)
- Philippinen (1)
- Philippines (1)
- Photodegradation (1)
- Photosynthese (1)
- Photosynthesis (1)
- Pleistozän (1)
- Poland (1)
- Polarraum (1)
- Polen (1)
- Politische Strategie (1)
- Polychlorierte Biphenyle (1)
- Polycyclische Aromaten (1)
- Popmusik (1)
- Population Economics (1)
- Post (1)
- Postal sector (1)
- Precipitation (1)
- Preisrisiko (1)
- Prestige (1)
- Prevention (1)
- Privatkonkurs (1)
- Problemverhalten (1)
- Process Optimization (1)
- Procrastination (1)
- Product Marketing (1)
- Produktionstechnik (1)
- Produktivität (1)
- Produktmarketing (1)
- Produktwahrnehmung (1)
- Professional Competence (1)
- Projektmanagement (1)
- Prokrastination (1)
- Prozessoptimierung (1)
- Präferenzstrategie (1)
- Prüfungsqualität (1)
- Pseudo-Independence (1)
- Pupils (1)
- Pädagogisches Personal (1)
- Qualitätsmanagement (1)
- Quartär (1)
- Quaternary (1)
- Rauchen (1)
- Realschule (1)
- Recht (1)
- Region (1)
- Regionalentwicklung (1)
- Regionalism (1)
- Regulation (1)
- Regulierung (1)
- Rehabilitation (1)
- Reinigungsmittel (1)
- Reisebüro (1)
- Reisen (1)
- Religion (1)
- Renaturierung <Ökologie> (1)
- Renewable Ressources (1)
- Research Evaluation (1)
- Research and Development (1)
- Resin (1)
- Responsibility (1)
- Ressourcenabhängigkeitstheorie (1)
- Ressourcenökonomie (1)
- Restoration <Ecology> (1)
- Retirement (1)
- Rezeption (1)
- Risikobewertung (1)
- Risikokapital (1)
- Rohrleitungen (1)
- Ruhestand (1)
- Rural Areas (1)
- Räumliche Verteilung (1)
- Samen (1)
- Saving (1)
- Schadstoffeintrag (1)
- Scheinselbständigkeit (1)
- Schlaftanz (1)
- Schreiben (1)
- Schreibunterricht (1)
- Schule (1)
- Schulentwicklung (1)
- Schulleistungsmessung (1)
- Schweden (1)
- Schwerbehinderter (1)
- Schwermetallbelastung (1)
- Schädlingsbekämpfung (1)
- Schädlingsbekämpfungsmittel (1)
- Schüler (1)
- Scientific Comunication (1)
- Sea Ice (1)
- Sedimente (1)
- Seehund (1)
- Selbstdarstellung (1)
- Selbstorganisation (1)
- Selbstregulation (1)
- Selbstschutz (1)
- Selbständigkeit (1)
- Self-Assessment (1)
- Sickerwasser (1)
- Simplicity (1)
- Sleep dancing (1)
- Social Dilemma (1)
- Social entrepreneurship (1)
- Social standards (1)
- Social-emotional learning (1)
- Software (1)
- Soil quality (1)
- Soil treatment (1)
- Sozialassistent (1)
- Soziale Probleme (1)
- Soziales Dilemma (1)
- Soziales Engagement (1)
- Soziales Lernen (1)
- Soziales Netzwerk (1)
- Soziales System (1)
- Sozialkompetenz (1)
- Sozialwirtschaft (1)
- Space Policy (1)
- Sparen (1)
- Sparkasse (1)
- Specialist Advisor (1)
- Spektralanalyse (1)
- Sputum (1)
- Stadtlandschaft (1)
- Standortplanung (1)
- Stickstoffbelastung (1)
- Stickstoffoxide (1)
- Stilistik (1)
- Strafe (1)
- Strukturfonds (1)
- Strukturreform (1)
- Städtebau (1)
- Städtische Bauplanung (1)
- Sub-Saharan Africa (1)
- Subsaharisches Afrika (1)
- Summenparameter (1)
- Supervision (1)
- Sustainability Management (1)
- Swedish school system (1)
- Syrien (1)
- Systematik (1)
- Süßstoff (1)
- Tabakrauch (1)
- Tanz (1)
- Teacher (1)
- Teacher Education (1)
- Teacher training (1)
- Teaching Mathematics (1)
- Teamführung (1)
- Teilhabe (1)
- Temperatur (1)
- Terrorismus (1)
- Textilindustrie (1)
- Theater (1)
- Thermal energy storage (1)
- Tiermedizin (1)
- Tierwelt (1)
- Totholz (1)
- Tourism research (1)
- Tourismusforschung (1)
- Toxicity (1)
- Toxizität (1)
- Transdisciplinarity (1)
- Transition Management (1)
- Transitionsmanagement (1)
- Transnational civil society (1)
- Transport (1)
- Trauermücken (1)
- Travel Behaviour (1)
- Trinkwasser (1)
- Tugendethik (1)
- Tugendhaftigkeit (1)
- UV photolysis (1)
- Umwelt (1)
- Umweltanalyse (1)
- Umweltbildung (1)
- Umweltgefährdung (1)
- Umwelthaftung (1)
- Umweltplanung (1)
- Umweltpolitik (1)
- Umwelttoxizität (1)
- Umweltverträglichkeit (1)
- Umweltüberwachung (1)
- Unesco (1)
- University Choice (1)
- University Culture (1)
- Universitätsklinik (1)
- Universitätskultur (1)
- Unternehmensbezogene Dienstleistung (1)
- Unternehmensethik (1)
- Unternehmenskommunikation (1)
- Unternehmensperformance (1)
- Unternehmensplanung (1)
- Unternehmensverbindung (1)
- Unternehmer (1)
- Unternehmertum (1)
- Unternehmerverhalten (1)
- Unterricht (1)
- Urban Planning (1)
- Urlaubsreise (1)
- User Behaviour (1)
- Vagheit (1)
- Verbraucherforschung (1)
- Verbraucherschutz (1)
- Verbraucherzufriedenheit (1)
- Verbundwirtschaft (1)
- Vereinigte Staaten (1)
- Vereinte Nationen (1)
- Vergütung (1)
- Verhalten (1)
- Verhandlungsergebnis (1)
- Verhandlungsführung (1)
- Verkauf (1)
- Verkehr (1)
- Verkehrspsychologie (1)
- Verockerung (1)
- Versicherung (1)
- Versicherungswert (1)
- Verteilungsgerechtigkeit (1)
- Vertical Linkages (1)
- Vertikale Bindung (1)
- Vertikale Verknüpfungen (1)
- Verwaltung (1)
- Verwaltungsreform (1)
- Videokonferenzsystem (1)
- Visuelle Kultur (1)
- Visuelle Theorie (1)
- Visuelle Wahrnehmung (1)
- Vorschulkind (1)
- WHO (1)
- Wald (1)
- Waldkiefer (1)
- Waldschaden (1)
- Waldökosystem (1)
- Warrants (1)
- Waschmittel (1)
- Wasseranalyse (1)
- Wasseraufbereitung (1)
- Wasserbehandlung (1)
- Wasserqualität (1)
- Wasserwirtschaft (1)
- Wasserzyklus (1)
- Wastewater (1)
- Wastewater treatment plant (1)
- Water Analysis (1)
- Water Pollution (1)
- Water Quality (1)
- Water Recycling (1)
- Water Resources Management (1)
- Water treatment (1)
- Weather Parameter (1)
- Web 2.0 (1)
- Weide (1)
- Weimar Republic (1)
- Weimarer Republik (1)
- Weiterbildungsberatung (1)
- Weltgesundheitsorganisation (1)
- Weltraumpolitik (1)
- Werbewirkung (1)
- Werbung (1)
- Wettbewerb (1)
- Wettbewerbsfähigkeit (1)
- Wetter (1)
- Widerstandsfähigkeit (1)
- Windenergie (1)
- Wirtschaftliches Wachstum (1)
- Wirtschaftlichkeitsanalyse (1)
- Wirtschaftsbericht (1)
- Wirtschaftsprüfung (1)
- Wissenschaftliche Komunikation (1)
- Wohnungsmarkt (1)
- Work Motivation (1)
- Wärmespeicherung (1)
- Xylobiont (1)
- Zahnschmelz (1)
- Ziegel (1)
- Zigarettenrauch (1)
- Zugeständnis (1)
- administrative reform (1)
- adolescence (1)
- agriculture (1)
- air pollution (1)
- alcohol consumption (1)
- algal-bacterial culture (1)
- all-day-school (1)
- allergen (1)
- analytics (1)
- anger regulation (1)
- atmosphere (1)
- bacterial composition (1)
- beechforest (1)
- beetle conservation (1)
- beverage carton (1)
- biotechnology (1)
- blended assessment (1)
- business creation (1)
- business services (1)
- calluna vulgaris (1)
- capital requirements (1)
- car emission (1)
- career (1)
- career preparation (1)
- challenge (1)
- climate change (1)
- communication (1)
- competitiveness (1)
- compulsory school (1)
- concept of emploees (1)
- conceptual vagueness (1)
- conservation management (1)
- cooperation (1)
- cooperative bank (1)
- cultural landscapes (1)
- customer satisfaction (1)
- damage to forests (1)
- data protection (1)
- decision making (1)
- democratic theory (1)
- disability (1)
- dstributive justice (1)
- economy (1)
- ecosystem functioning (1)
- education (1)
- elementary school (1)
- emerging pollutants (1)
- emission (1)
- emotion regulation (1)
- emotional labor (1)
- emphysema (1)
- empirical research (1)
- employment protection (1)
- employment quota (1)
- energy efficiency (1)
- energy label (1)
- energy storage (1)
- energy transition (1)
- enterprise (1)
- environmental Liability (1)
- environmental management (1)
- environmental manager (1)
- environmental performance (1)
- environmental risk (1)
- environmental strategy (1)
- ethical competence (1)
- ethische Kompetenz (1)
- farmland birds (1)
- fauna (1)
- fertilization (1)
- fibroblasts (1)
- field study (1)
- fishery (1)
- flood (1)
- forest ecology (1)
- friendship (1)
- functionalism (1)
- gastronomy (1)
- geneexpression (1)
- genotoxicity (1)
- global tourism (1)
- governance (1)
- grassland (1)
- habitat modelling (1)
- habitat quality (1)
- health care market (1)
- health improvement (1)
- heat exchanger (1)
- heathland ecosystems (1)
- information management (1)
- insurance value (1)
- international comparison (1)
- ionization (1)
- justice (1)
- labourmarket (1)
- land-use change (1)
- leadership (1)
- life-cycle assessment (1)
- lobbyism (1)
- lung (1)
- macroinvertebrates (1)
- management control (1)
- material flow (1)
- media (1)
- medium-sized business (1)
- mercury (1)
- merger (1)
- mindfulness (1)
- model (1)
- motor oil (1)
- mycorrhiza (1)
- nature conservancy (1)
- nature conservation (1)
- network (1)
- niche overlap (1)
- nitrogen deposition (1)
- nutrient removal (1)
- nutrients (1)
- older workers (1)
- organizational communication (1)
- ozonation products (1)
- ozone (1)
- palaiarctic fickle Midge (1)
- parasitoids (1)
- passenger cars (1)
- peer-relationship (1)
- perception of products (1)
- personnel selection (1)
- pesticide (1)
- pipes (1)
- pollutant (1)
- polycylic aromatic compounds (1)
- preference strategy (1)
- preschool educators (1)
- prevention (1)
- private schools (1)
- problem behaviour (1)
- product oriented environmental policy (1)
- project management (1)
- property (1)
- protection of natural resources (1)
- provincial press (1)
- public sector reform (1)
- punishment (1)
- rangelands (1)
- remediation (1)
- resilience (1)
- responsibility (1)
- saproxylic (1)
- savings bank (1)
- seawater (1)
- sediments (1)
- seed predation (1)
- self assessment (1)
- self-organisation (1)
- self-protection (1)
- self-regulation (1)
- sewage deposal (1)
- sheep grazing (1)
- smoking (1)
- social assistants (1)
- social economy (1)
- soil (1)
- soil moisture (1)
- soil protection (1)
- solar radiation (1)
- spatial distribution (1)
- species diversity (1)
- sputum (1)
- startup (1)
- streams (1)
- sustainability accounting (1)
- sustainibility (1)
- systems thinking (1)
- tar-contaminated sites (1)
- teacher training (1)
- temperature (1)
- temporal trends (1)
- terrorism (1)
- textile supply chain (1)
- tourism future (1)
- tourism industry (1)
- training (1)
- transformation (1)
- transformation products (1)
- travel behavior (1)
- travel behaviour (1)
- university workplace (1)
- venture capital (1)
- wages (1)
- waste heat (1)
- wastewater concentration (1)
- wastewater tracers (1)
- wastewater treatment (1)
- water prification (1)
- water resources management (1)
- wetlands (1)
- whole mixture toxicity (1)
- wind energy (1)
- work engagement (1)
- youth (1)
- Ägypten (1)
- Ältere Arbeitnehmerin (1)
- Älterer Arbeitnehmer (1)
- Äquivalenzfunktionalismus (1)
- Ärger (1)
- Öffentliche Aufgaben (1)
- Ökologische Nische (1)
- Ökosystemmanagement (1)
- Ökotourismus (1)
- Östrogen (1)
- Überschuldung (1)
- Überschwemmung (1)
- Überzeugung (1)
Institute
- Fakultät Nachhaltigkeit (128)
- Fakultät Wirtschaftswissenschaften (79)
- Fakultät Bildung (53)
- Frühere Fachbereiche (37)
- Institut für Ökologie (IE) (30)
- Nachhaltigkeitsmgmt./-ökologie (26)
- Fakultät Kulturwissenschaften (24)
- Institut für Nachhaltige Chemie und Umweltchemie (INUC) (23)
- BWL (22)
- Chemie (21)
The world wide population growth and the increasing water scarcity endanger more and more the human society. Water saving measures alone will not be sufficient to solve all associated problems. Therefore, people in arid countries might come back to any kind of water available. In this context the way people regard wastewater must change in terms that it has to be recognized as a water resource. The reuse of wastewater, treated and untreated, for irrigation purposes in agriculture is already established in some semi-arid and arid countries. Countries with absolute water scarcity like Israel might not only be forced to reduce their water consumption, but even to transfer reused water to other sectors. Concerns of authorities and the general public about potential health risks are completely understandable. The health risks of wastewater are mainly originating from pathogens which are negatively correlated with its treatment. Therefore, the quality of a wastewater effluent derived from mechanical-biological treatment can be further improved by additional treatment steps like soil aquifer treatment (SAT). This process is adopted at the Israeli Shafdan facility in the south of Tel Aviv. Conventionally treated wastewater is applied on surface basins from where it percolates into the coastal plain aquifer which supplies approximately one quarter of Israel ́s drinking water. After a certain residence time in the subsurface the water is recovered by wells surrounding the recharge area. Although the pumping regime creates a hydraulic barrier to the pristine groundwater, concerns exist that a contamination of the surrounding drinking water wells could occur. So far, little is known about the removal of organic trace pollutants during the SAT process in general and for the Shafdan site in particular. Consequently, the need arose to study the purification power of the SAT process in terms of the removal of organic trace pollutants. For this purpose reliable wastewater tracers are essential to be able to differentiate between degradation and sorption processes on the one hand and dilution with pristine groundwater on the other hand. Based on their chemical properties, their worldwide usage in a variety of foodstuffs and beverages, and first data about the fate and occurrence of sucralose, artificial sweeteners came into the focus as promising tracer candidates.
Thus, in the present work an analytical method for the simultaneous determination of seven commonly used artificial sweeteners in different water matrices, like surface water and wastewater, was developed (see chapter 2). The method is based on the solid phase extraction (SPE) of the analytes by a styrene-divinylbenzene (SDB) copolymer material, and the analysis by liquid chromatography-electrospray ionization tandem mass-spectrometry (LC-ESI- MS/MS). The sensitivity in negative ionization mode was considerably enhanced by postcolumn addition of the alkaline modifier tris(hydroxymethyl) aminomethane. In potable water, except for aspartame and neohesperidine dihydrochalchone, absolute recoveries >75 % were obtained for all analytes under investigation, but were considerably reduced due to matrix effects in treated wastewater. The widespread distribution of the artificial sweeteners acesulfame, saccharin, cyclamate, and sucralose in the aquatic environment was proven. Concentrations in two German wastewater treatment plant (WWTP) influents ranged up to 190 μg/L for cyclamate, several tens of μg/L for acesulfame and saccharin, and about 1 μg/L for sucralose. For saccharin and cyclamate removal rates >90 % during wastewater treatment were observed, whereas acesulfame and sucralose turned out to be very persistent. As a result of high influent concentrations and low removal rates in WWTPs, acesulfame was the dominant sweetener in German surface waters with concentrations up to 2.7 μg/L. The detection of acesulfame and sucralose in recovery wells in the Shafdan SAT site in Israel in the μg/L range was a promising sign for their possible use as anthropogenic markers. As acesulfame and sucralose showed a pronounced stability in WWTPs and were detected in recovery wells of the SAT site in Israel it became worthwhile to assess their tracer suitability compared to other organic trace pollutants suggested as anthropogenic markers in the past (see chapter 3). Therefore, the prediction power of the two sweeteners was evaluated in comparison with the antiepileptic drug carbamazepine (CBZ), the X-ray contrast medium diatrizoic acid (DTA) and two benzotriazoles (1H-benzotriazole (BTZ) and its 4-methyl analogue (4TTri)). The concentrations of these compounds and their ratios were tracked from WWTPs with different treatment technologies, to recipient waters and further to river bank filtration (RBF) wells. Additionally, acesulfame and sucralose were compared with CBZ during advanced wastewater treatment by SAT in Israel. Only the persistent compounds acesulfame, sucralose, and CBZ showed stable ratios when comparing influent and effluent
concentrations of four German WWTPs with conventional wastewater treatment. However, by the additional application of powdered activated carbon in a fifth WWTP CBZ, BTZ, and 4-TTri were selectively removed resulting in a pronounced shift of the concentration ratios towards the nearly unaffected sweeteners. Results of a seven months monitoring program along the rivers Rhine and Main showed an excellent correlation between CBZ and acesulfame concentrations (r2 = 0.94), and still good values when correlating the concentrations with both benzotriazoles (r2 = 0.66 - 0.82). In RBF wells acesulfame and CBZ were again the compounds with the best concentration correlation (r2 = 0.85).