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  • 1
    Call number: AWI G2-14-0008
    Description / Table of Contents: Contents: Council Staff . - Acknowledgments. - Boxes. - Tables. - Figures. - Acronyms and Abbreviations. - Summary. - Introduction. - 1 The Oceans in the Anthropocene. - 1.1 Use of the oceans. - 1.1.1 The legendary sea and its cultural meanings. - 1.1.2 Food from the sea. - 1.1.3 Ocean shipping and maritime trade. - 1.1.4 The sea as a dump for waste and waste water. - 1.1.5 Energy from the sea. - 1.1.6 Marine mining and resource extraction. - 1.1.7 The economic value of marine ecosystems. - 1.2 Threats to the oceans. - 1.2.1 Physical destruction of ecosystems. - 1.2.2 Overfishing. - 1.2.3 Impacts of marine pollution. - 1.2.3.1 Results of chemical pollution. - 1.2.3.2 Results of plastic pollution. - 1.2.3.3 Radioactive contamination. - 1.2.4 Warming. - 1.2.5 CO2 input and acidification. - 1.2.6 Low-oxygen zones. - 1.2.7 Sea-level rise. - 1.2.8 Aggregated effects. - 1.3 Possible new uses. - 1.3.1 Renewable energy. - 1.3.2 Raw materials. - 1.3.3 Marine genetic resources. - 1.3.4 New developments in marine aquaculture. - 1.4 Shaping the future of the marine ecosystem. - 1.4.1 Primary principles and values. - 1.4.2 Guiding principle for human interaction with the oceans. - 1.4.2.1 Think systemically: Regard and maintain the sea as an ecosystem and aspart of the Earth system. - 1.4.2.2 Act in a precautionary way: Take uncertainty and ignorance into account. - 1.4.2.3 Cooperate: overcoming the tragedy of the commons. - 1.4.3 Exemplary specification of the guiding principle for the sustainable stewardship of the marine ecosystem. - 2 Global Society and Social Contract. - 2.1 Global society and world's oceans. - 2.1.1 The global society in the Anthropocene. - 2.1.2 The emerging global society and global society theory. - 2.1.3 The cosmopolitan challenge. - 2.1.4 Global appreciation of the oceans. - 2.2 A social contract for the seas. - 2.2.1 A social contract as a basis for the Great Transformation. - 2.2.2 Reform of ocean governance. - 3 Governance of Human Ocean Use. - 3.1 Specifics of the seas. - 3.1.1 Oceans as part of the Earth system. - 3.1.2 Demands on marine policy caused by knowledge gaps. - 3.1.3 Oceans as a global public and common good. - 3.1.4 Touchstones for assessing the existing governanceof the oceans. - 3.1.5 Common heritage of mankind. - 3.2 Ocean governance in international law: UNCLOS. - 3.2.1 Zoning of the oceans by UNCLOS. - 3.2.1.1 Territorial sea. - 3.2.1.2 Contiguous zone. - 3.2.1.3 Exclusive economic zone. - 3.2.1.4 Continental shelf. - 3.2.1.5 High seas. - 3.2.1.6 The Area. - 3.2.2 Regulations of UNCLOS on the conservation and sustainable use of the oceans. - 3.2.3 Institutions of UNCLOS. - 3.2.3.1 International Tribunal for the Law of the Sea. - 3.2.3.2 International Seabed Authority and the seabed regime. - 3.2.4 Assessment of UNCLOS. - 3.2.4.1 Systemic perspective. - 3.2.4.2 Precautionary principle. - 3.2.4.3 Adaptive management. - 3.2.4.4 Incentives for innovation. - 3.2.4.5 Assignment of rights of use. - 3.2.4.6 Cooperation. - 3.2.4.7 Subsidiary decision-making structures. - 3.2.4.8 Transparent information. - 3.2.4.9 Participative decision-making structures. - 3.2.4.10 Fair distribution mechanisms. - 3.2.4.11 Conflict-resolution mechanisms. - 3.2.4.12 Enforcement mechanisms. - 3.2.5 Core problems and challenges of future ocean governance. - 3.3 Global ocean governance: UN institutions and activities. - 3.3.1 Actors: UN bodies and specialized organizations. - 3.3.1.1 UN General Assembly and UNSecretary-General. - 23.3.1.2 Rio Process. - 3.3.1.3 International Maritime Organization. - 3.3.1.4 UNESCO Intergovernmental Oceanic Commission. - 3.3.1.5 UN Environmental Programme (UNEP). - 3.3.1.6 UN-Oceans. - 3.3.1.7 Global Environment Facility (GEF). - 3.3.1.8 World Bank Group. - 3.3.2 UN conventions relating to the oceans. - 3.3.2.1 Convention on Biological Diversity (CBD). - 3.3.2.2 Negotiations on a new implementing agreement on marine biodiversityon the high seas. - 3.3.2.3 UN Framework Convention on Climate Change (UNFCCC). - 3.3.2.4 UNESCO World Heritage Convention and World Heritage Marine Programme. - 3.3.2.5 MARPOL and SOLAS. - 3.3.2.6 London Convention and London Protocol. - 3.4 Regional ocean governance. - 3.4.1 UNEP Regional Seas Programme. - 3.4.2 Regional seas agreements. - 3.4.2.1 Task areas. - 3.4.2.2 Institutionalization: governance mechanisms and capacity. - 3.4.2.3 Cooperation, coordination, coherence and complementarity. - 3.4.3 EU marine policy. - 3.5 Private ocean governance. - 3.5.1 Options and limitations. - 3.5.2 Example: eco-labels and sustainability labels. - 3.6 Selected instruments. - 3.6.1 Environmental monitoring. - 3.6.2 Marine protected areas and marine spatial planning. - 3.6.2.1 Marine protected areas. - 3.6.2.2 Marine spatial planning. - 3.6.3 Integrated coastal-zone management.. - 3.6.4 Environmental standards. - 3.6.5 Environmental liability. - 3.6.6 Sanctions. - 3.6.7 Class actions. - 3.6.8 International financial transfers. - 3.7 Conclusions. - 4 Food from the Sea. - 4.1 Marine fishery. - 4.1.1 Status and trends of fisheries. - 4.1.2 Importance and effects of fisheries. - 4.1.2.1 Food and food security. - 4.1.2.2 Socioeconomic significance and effects. - 4.1.2.3 Ecological significance and effects. - 4.1.2.4 Small-scale marine fisheries in the global context. - 4.1.3 Sustainable fisheries management: methods and instruments. - 4.1.3.1 Ecosystem approach and precautionary principle as the basis for sustainable fishing. - 4.1.3.2 Knowledge-based fisheries management. - 4.1.3.3 Instruments for the sustainable management of fish-stocks. - 4.1.3.4 Minimizing the ecological risks and side effects of fisheries. - 4.1.3.5 Monitoring and enforcement. - 4.1.3.6 Costs and financing the transition towards sustainable fisheries. - 4.1.4 International fisheries governance: institutions and focal points. - 4.1.4.1 Political objectives. - 4.1.4.2 The Food and Agriculture Organization of the United Nations. - 4.1.4.3 The FAO Code of Conduct for Responsible Fisheries. - 4.1.4.4 Fisheries governance on the high seas: the UN Fish Stocks Agreement and regional fisheries management organizations. - 4.1.4.5 Illegal, unreported and unregulated fishing. - 4.1.4.6 The external dimension of the EU Common Fisheries Policy. - 4.1.4.7 Subsidies in the fishing industry. - 4.1.4.8 International trade and trade policy. - 4.2 Aquaculture. - 4.2.1 Definitions and principles. - 4.2.2 State of aquaculture and trends. - 4.2.2.1 Growth and regional overview. - 4.2.2.2 Contribution to food security and poverty reduction. - 4.2.2.3 Environmental risks from aquaculture and conflicts over use at the coasts. - 4.2.2.4 Promoting ecologically sustainable aquaculture. - 4.2.3 Governance of aquaculture. - 4.2.3.1 Fundamental prerequisites for a sustainable form of aquaculture. - 4.2.3.2 Selected instruments for promoting sustainable aquaculture. - 4.2.3.3 Research and development for sustainable aquaculture. - 4.2.4 International and regional governance in aquaculture. - 4.2.4.1 International level. - 4.2.4.2 European Union. - 4.2.4.3 Regional seas agreements. - 4.3 Interactions between fisheries and aquaculture. - 4.3.1 Forage fisheries and breeding from wild-caught fish. - 4.3.2 Competition between uses. - 4.3.3 Reducing the proportion of fishmeal and fish oil used in aquaculture feeds. - 4.4 Systemic effects: land/sea interactions and feedbackloops with the Earth system. - 4.4.1 Climate change. - 4.4.2 Acidification. - 4.4.3 Low-oxygen zones and eutrophication. - 4.4.4 Anthropogenic pollution. - 4.4.5 Synergistic effects. - 4.5 Conclusions. - 5 Energy from the sea. - 5.1 Fossil energy carriers from the sea. - 5.1.1 Resource availability of fossil energy carriers. - 5.1.2 Technologies of offshore extraction. - 5.1.3 Environmental impact of fossil energy use. - 5.1.4 Infrastructure. - 5.1.4.1 Mineral oil. - 5.1.4.2 Natural gas. - 5.1.4.3 Carbon dioxide. - 5.1.5 Costs. - 5.1.6 Prospects of fossil-fuel extraction in the oceans. - 5.1.7 Conclusions. - 5.2 Renewable energy. - 5.2.1 Technological possibilities of offshore wind energy and marine energies. - 5.2.1.1 Development status of offshore wind energy. - 5.2.1.2 Development status of marine-energy technologies. - 5.2.2 Global potential of sea-based renewable power generation. - 5.2.2.1 Offshore wind energy. - 5.2.2.2 Marine energies. - 5.2.3 Environmental impact of marine renewable-energy generation. - 5.2.4 Infrastructure. - 5.2.4.1 Offshore logistics for renewable energy. - 5.2.4.2 Offshore storage technologies. - 5.2.5 Costs. - 5.2.5.1 Offshore wind energy. - 5.2.5.2 Marine energies. - 5.3 Vision of a future marine energy system. - 5.3.1 The status quo of marine energy generation. - 5.3.2 A future renewable marine energy system. - 5.3.3 Transformation of the marine energy system - from the status quo to the futureenergy system. - 5.4 Governance. - 5.4.1 Energy policy. - 5.4.2 Marine policy. - 5.4.2.1 Marine spatial planning. - 5.4.2.2 Construction of installations in the sea. - 5.4.2.3 Regulation of oil and gas production. - 5.4.2.4 Regulations on the storage of CO2 in the sea or the seabed. - 5.4.3 Promotion of innovation. - 5.4.3.1 Promotion of systemic innovation. - 5.4.3.2 Technology development. - 5.4.3.3 Innovation potential. - 5.4.3.4 Measures. - 5.5 Conclusions. - 6 Synthesis: The Blue Revolution. - 6.1 The oceans as the common heritage of mankind. - 6.2 Expansion into the oceans. - 6.3 A new initiative for the conservation and sustainable use of the seas. - 6.4 Elements of a new marine policy. - 7 Recommendations for Action. - 7.1 Guiding principles for future ocean governance. - 7.1.1 The oceans as the 'common heritage of mankind'. - 7.1.2 The systemic approach. - 7.1.3 The precautionary principle. - 7.1.4 Ten criteria for a future system of ocean governance. - 7.1.5 Implementation and enforcement. - 7.1.6 A social contract for the seas. - 7.2 The WBGU's vision of a comprehensive reform of the international law of the sea. - 7.2.1 The common heritage of mankind, the systemic approach and the precautionaryprinciple: three guiding principles for ocean management. - 7.2.2 Institutional changes. - 7.2.2.1 A global steward of the seas: the World Oceans Organization. - 7.2.2.2 Regional stewards of the seas: Regional Marine Management Organizations. - 7.2.2.3 Extend the jurisdiction of the International Tribunal for the Law of the Sea. - 7.2.3 Rights and duties of states parties on the high seas and in EEZs. - 7.2.3.1 Conservation and sustainable use of the high seas. - 7.2.3.2 Conservation and sustainable use of the Exclusive Economic Zones. - 7.2.4 Instruments. - 7.3 Recommendations for action: the road to a comprehensivereform of the law of the sea. - 7.3.1 Strengthen the knowledge and action base of ocean governance. - 7.3.1.1 Improve marine environmental monitoring. - 7.3.1.2 Process scientific knowledge for policy-makers and support the Regular Process. - 7.3.1.3 Set up a multi-stakeholder forum. - 7.3.2 Create the necessary conditions for sustainable management. - 7.3.3 Develop strategies for future ocean governance. - 7.3.3.1 Develop the Oceans Compact into an Integrated World Oceans Strategy. - 7.3.3.2 Ratify regional, national and local marine strategies. - 7.3.3.3 Take on a pioneering role - forge subglobal alliances. - 7.3.4 Support and flesh out the international law of the sea. - 7.3.4.1 Promote the signing, ratification and implementation of UNCLOS. - 7.3.4.2 Reach a new implementing agreement on biological diversity on the high seas. - 7.3.4.3 Advance the UN Fish Stocks Agreement and Regional Fisheries Management Organizations (RFMOs). - 7.3.5 Strengthen regional ocean governance. - 7.3.5.1 Strengthen and expand the UNEP Regional Seas Programme. - 7.3.5.2 Strengthen regional seas agreements. - 7.3.5.3 Improve dovetailing in regional ocean governance. - 7.3.6 Develop concepts for the joint funding of ocean governance. - 7.3.6.1 Strengthen international financing mechanisms. - 7.3.6.2 Use the mechanisms of the Framework Convention on Climate Change for funding. - 7.3.6.3 Utilize user charges as a source of funding. - 7.3.7 Employ incentive instruments and funding structures. - 7.3.7.1 Create economic incentives for sustainable uses. - 7.3.7.2 Develop funding structures for long-term-oriented investments. - 7.3.8 Strengthen and expand private governance. - 7.3.8.1 Introduce a standardized Europe-wide system of certification for wild-caught fish and seafood. - 7.3.8.2 Improve legal certainty on the WTO-conformity of sustainability standards. - 7.3.9 Considerably expand marine protected areas and spatial planning. - 7.3.9.1 Expand marine protected areas. - 7.3.9.2 Expand cross-border marine spatial planning. - 7.3.10 Promote the harmonization of existing liability regimes. - 7.4 Food from the sea. - 7.4.1 Recommendations for action on marine fisheries. - 7.4.1.1 Overall recommendations for a change of course in fisheries. - 7.4.1.2 Improve the preconditions for knowledge-based fishery. - 7.4.1.3 Reduce subsidies. - 7.4.1.4 Stop wastefulness. - 7.4.1.5 Combat illegal, unreported and unregulated fishing. - 7.4.1.6 Take into account climate change, ocean acidification and other systemic effects. - 7.4.1.7 Reform the European Union's Common Fisheries Policy. - 7.4.1.8 Marine small-scale fisheries in the global context. - 7.4.2 Recommendations for action on aquaculture. - 7.4.2.1 Improve knowledge and data resources. - 7.4.2.2 Promote the development of sustainable aquaculture systems. - 7.4.2.3 Implement international and EU-wide recommendations. - 7.4.2.4 Strengthen economic policy supporting sustainable aquaculture. - 7.4.2.5 Promote cooperation, prevent conflicts. - 7.4.3 Fishing and aquaculture as elements of integrated strategies for food security. - 7.5 Use of energy from the sea for the energy-system transformation. - 7.5.1 Integrated energy, marine and innovation policiesfor the energy-system transformation. - 7.5.1.1 Energy policy. - 7.5.1.2 Marine policy. - 7.5.1.3 Innovation policy. - 7.5.2 Build an offshore supergrid. - 7.5.3 Refrain from marine methane hydrate mining. - 7.5.4 Develop regulations for sub-seabed CCS. - 8 Recommendations for Research and Education. - 8.1 Research in the context of the transformation towards sustainability. - 8.1.1 Key types of research. - 8.1.2 Innovative approaches in German marine research. - 8.2 Transformation research for the oceans. - 8.2.1 Conceptual background. - 8.2.2 Research recommendations. - 8.3 Transformative research for the seas. - 8.3.1 Research on global change. - 8.3.2 Ocean governance. - 8.3.2.1 Ocean governance for the transformation towards sustainability. - 8.3.2.2 Policy instruments for new challenges. - 8.3.3 Food from the sea. - 8.3.3.1 Fisheries. - 8.3.3.2 Aquaculture. - 8.3.3.3 Overarching issues. - 8.3.4 Energy from the sea. - 8.3.4.1 Technology research. - 8.3.4.2 Research on environmental hazards and risks. - 8.4 Recommendations on research policy. - 8.4.1 Stronger integration of interdisciplinary marine research into research programmes. - 8.4.2 Stronger institutionalization of interdisciplinary marine research. - 8.4.3 Strengthening of the interface between science and society in marine research. - 9 References. - 10 Glossary.
    Type of Medium: Monograph available for loan
    Pages: XXIII, 362 S. : Ill., graph. Darst., Kt.
    Edition: 1. Aufl., Red.-Schluss: 28.02.2013
    ISBN: 9783936191400
    Branch Library: AWI Library
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  • 2
    Call number: AWI G2-13-0139 ; PIK N 076-13-0199 ; IASS 14.0011
    Description / Table of Contents: Inhaltsverzeichnis: Mitarbeiter des Beirats. - Danksagung. - Kästen. - Tabellen. - Abbildungen. - Akronyme. - Zusammenfassung. - Einleitung. - 1 Die Meere im Anthropozän. - 1.1 Nutzung der Meere. - 1.2 Die Bedrohung der Meere. - 1.3 Mögliche neue Nutzungen. - 1.4 Die Zukunft des Ökosystems Meer gestalten. - 2 Weltgesellschaft und Gesellschaftsvertrag. - 2.1 Weltgesellschaft und Weltmeere. - 2.2 Ein Gesellschaftsvertrag für die Meere. - 3 Governance anthropogener Meeresnutzung. - 3.1 Spezifika der Meere. - 3.2 Völkerrechtlicher Rahmen der Meeres-Governance: UNCLOS. - 3.3 Globale Meeres-Governance: UN-Institutionen und Aktivitäten. - 3.4 Regionale Governance der Meere. - 3.5 Private Governance der Meere. - 3.6 Ausgewählte Instrumente. - 3.7 Folgerungen. - 4 Nahrung aus dem Meer. - 4.1 Marine Fischerei. - 4.2 Aquakultur. - 4.3 Wechselwirkungen zwischen Fischerei und Aquakultur. - 4.4 Systemische Wirkungen: Land/Meer-Interaktionen und Rückkopplungen mit dem Erdsystem. - 4.5 Folgerungen. - 5 Energie aus dem Meer. - 5.1 Fossile Energieträger aus dem Meer. - 5.2Erneuerbare Energien. - 5.3 Vision für ein marines Energiesystem der Zukunft. - 5.4 Governance. - 5.5 Folgerungen. - 6 Synthese: Die blaue Revolution. - 6.1 Die Meere als gemeinsames Erbe der Menschheit. - 6.2 Expansion in die Meere. - 6.3 Eine neue Initiative für den Schutz und die nachhaltige Nutzung der Meere. - 6.4 Elemente einer neuen Meerespolitik. - 7 Handlungsempfehlungen. - 7.1 Handlungsleitende Prinzipien einer künftigen Meeres-Governance. - 7.2 Die WBGU-Vision einer umfassenden Reform des internationalen Seerechts. - 7.3 Handlungsempfehlungen: Der Weg zu einer umfassenden Seerechtsreform. - 7.4 Nahrung aus dem Meer. - 7.5 Energienutzung aus dem Meer für die Energiesystemtransformation. - 8 Empfehlungen für Forschung und Bildung. - 8.1 Forschung im Kontext der Transformation zur Nachhaltigkeit. - 8.2 Transformationsforschung für die Meere. - 8.3 Transformative Forschung für die Meere. - 8.4 Empfehlungen zur Forschungspolitik. - 9 Literatur. - 10 Glossar.
    Type of Medium: Monograph available for loan
    Pages: XXIV, 383 S. : Ill., graph. Darst., Kt.
    Edition: 1. Aufl., Red.-Schluss: 28.02.2013
    ISBN: 9783936191394
    Series Statement: Welt im Wandel : Hauptgutachten
    Location: A 18 - must be ordered
    Branch Library: AWI Library
    Branch Library: PIK Library
    Branch Library: RIFS Library
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 54 (1989), S. 383-389 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Macromolecular Chemistry and Physics 198 (1997), S. 763-775 
    ISSN: 1022-1352
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The synthesis of a new type of poly(vinyl sugar) is described whose polymer backbone is connected with the monosaccharide unit by a C - C bond. Such polymers can be obtained by radical initiation. They show good stability in polymer-analogous reactions in contrast to common poly(vinyl saccharides) whose sugar residues are bound to the polymeric chain by ester, ether, or glycoside bonds. Starting from 7,8-dideoxy-1,2;3,4-di-O-isopropylidene-α-D-galacto-oct-7-en-1,5-pyranos-6-ulose (1) polymers (P1) could be obtained by emulsion polymerization in high yields. Reduction of the keto group of P1 proceeded quantitatively and yielded poly(7,8-dideoxy-1,2;3,4-di-O-isopropylidene-D,L-glycero-α-D-galacto-oct-7-en-1,5-pyranose) (P3). In contrast to the following polymers without protecting groups these poly(vinyl ketones), which were soluble in tetrahydro-furan and toluene, did not follow a pure GPC-separation mechanism. The protecting groups of the poly(vinyl saccharides), either with or without keto groups, could be removed completely to give P2 and P4. The solubility of the polymers P2 with galactose-functionalized side chains in water was limited to a weight-average molecular weight M̄w of 1 500 000 due to association phenomena of the monosaccharide units. Reduction of the hemiacetal group and of the keto group of P2 yielded poly(1,2-dideoxy-D,L-glycero-D-galacto-oct-1-enitol) (P5) with sugar alcohol side chains instead of a cyclic monosaccharide unit. Oxidation of the hemiacetal group of P2 and P4 furnished poly(7,8-dideoxy-D-galacto-oct-7-en-6-ulosonic acid sodium salt) (P6) and poly(7,8-dideoxy-D,L-glycero-D-galacto-oct-7-enonic acid sodium salt) (P7), respectively. These polymers showed very high viscosities because of their polyelectrolyte character.
    Additional Material: 2 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Macromolecular Chemistry and Physics 197 (1996), S. 259-274 
    ISSN: 1022-1352
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: In this feature article we review the synthesis of polymerizable vinyl sugars. Many such syntheses start from isopropylidene-protected sugars, which still have a free OH-group. These compounds are then converted to polymerizable monomers by esterification or etherification. Selective reactions at non-protected sugars, introducing polymerizable groups, can be achieved by enzymatic catalysis. Alternatively, such selective transformations may be accomplished by chemical reaction at the reducing group of the sugar either directly or after transforming the half-acetal to a more reactive intermediate. Furthermore, results are described on the synthesis of vinyl sugars whose vinyl group is connected with the monosaccharide by a C—C bond. Such monomers can be polymerized by radical as well as by anionic initiation. In this case a chemically very stable connection is obtained in the resulting polymers between the sugar moiety and the polymer backbone.
    Additional Material: 1 Tab.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Macromolecular Chemistry and Physics 197 (1996), S. 1285-1299 
    ISSN: 1022-1352
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The syntheses of new types of vinyl sugars are described whose vinyl groups are connected with the monosaccharide by a C—C bond. Such monomers can be polymerized by radical as well as by anionic initiation. Starting from D-mannitol, D-gluconolactone, D-galactose, and D-fructose, the isopropylidene-protected aldehydes (R)-2,3-isopropylidene-D-glyceraldehyde (3), 2,3;4,5-di-O-isopropylidene-aldehydo-D-arabinose (4), 1,2;3,4-di-O-isopropylidene-α-D-galacto-hexodialdo-1,5-pyranose (5), and 2,3;4,5-di-O-isopropylidene-β-D-arabino-hexosulo-2,6-pyranose (6) were prepared. Grignard reaction of the aldehyde compounds with 4-vinylphenylmagnesium chloride in tetrahydrofuran (THF) yielded the new styryl monomers of type 1, in each case as a mixture of two diastereoisomers. The corresponding reaction with vinylmagnesium bromide furnished a mixture of two diastereoisomeric allyl alcohol derivatives. Subsequent Swern oxidation (DMSO/(COCl)2) gave the vinyl ketones of type 2. A scale-up procedure (20 L flask) allowed eight different monomers to be prepared on a 50-200 g scale. Furthermore, the synthesis of the 2,3;4,5-di-O-isopropylidene-β-D-fructopyranose could be considerably improved.
    Additional Material: 7 Tab.
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    Publication Date: 2014-10-22
    Description: The importance of the soil humus content is indisputable. Soil humus plays an important role in preserving soil fertility and exerts great influence on plant production and yield potential. However, proofing that management-related changes in the stock of soil organic matter (SOM) have taken place against the background of spatial and temporal variation is a difficult task. In most cases, sampling over a long period of time is needed to verify these changes. Alternatively, potential changes in the SOM stock can be estimated using humus balancing models, which help to identify the need for humus reproduction on a farm. In general, a humus balance is the difference between the humus demand of cultivated crops and humus supply through crops and organic fertilizers. In this study, the ‘Dynamic Humus Unit Method' within the modelling program REPRO was applied to calculate the humus balance for 29 model-farms that are representative of most of the agricultural production in Austria. Each model-farm represents a specific production type (PT) and farming system in a defined region or main production area (MPA). This approach gives an overview of the humus balances at a large scale and allows a general trend in Austria to be estimated. Besides differing between conventional and organic farming systems, specific site conditions can also be selected in the model. The constructed model-farms belong to different PTs such as “forage production”, “cash crops”, “refinement”, and “permanent crops”. The PT “permanent crops” refers to the cultivation of wine. The cropping system of each PT was analyzed in detail, while livestock keeping was considered only when applicable. Positive humus balances were found for all PTs except for permanent crops. The results ranged from –122 to 890 kg C ha −1 y −1 . Regions and farm structure, e.g. , forage production compared to cash crop, were found to have a greater influence than the kind of farming system ( i.e. , organic vs. conventional farming). Comparing the different PTs, forage production had the highest positive humus balances (219 to 890 kg C ha −1 y −1 ), followed by cash crop (24 to 239 kg C ha −1 y −1 ), refinement (–64 to 402 kg C ha −1 y −1 ) and permanent crops (–122 to –38 kg C ha −1 y −1 ). Regarding the farming system, organic farming led to more humus accumulation than conventional farming due to a higher share of fodder legumes and catch crops and more diverse crop rotations. The results were within the range of available empirical data on SOM change, and it was therefore concluded that the results are reasonable. In general, humus reproduction can be regarded as sufficient for agricultural production.
    Print ISSN: 1436-8730
    Electronic ISSN: 1522-2624
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Wiley
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    Publication Date: 1992-01-01
    Print ISSN: 0038-092X
    Electronic ISSN: 1471-1257
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Published by Elsevier
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