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  • Chemistry  (230)
  • Cell Biology  (99)
  • Alkenes
  • EARTH RESOURCES AND REMOTE SENSING
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  • General Chemistry
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  • ddc:330
  • American Association for the Advancement of Science (AAAS)  (329)
  • München : Oekom-Verl.  (2)
  • 2015-2019  (331)
  • 1970-1974
  • 1960-1964
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  • 1
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    Venture Capital für Erneuerbare-Energie-Technologien : eine empirische Analyse von Investitionshemmnissen (2016)
    München : Oekom-Verl.
    Details
    Publication Date: 2018-11-19
    Description: Technologische Innovationen können dazu beitragen, unser auf fossilen Energieträgern basierendes Energiesystem schneller und kostengünstiger zu einem nachhaltigen Energiesystem zu transformieren. Venture Capital-Investoren spielen dafür eine wichtige Rolle. Sie stellen jungen Technologiefirmen Kapital und Expertise zur Verfügung, um innovative Technologien erfolgreich zu entwickeln und zu kommerzialisieren. Wieso aber tätigen Venture Capital-Investoren in Deutschland bisher nur einen geringen Anteil ihrer Investitionen im Erneuerbare-Energien-Sektor? Gibt es Investitionshemmnisse, die speziell diesen Sektor für sie unattraktiv machen oder sind sie einfach nur ineffizient darin, einem vergleichsweise jungen Technologiesektor Kapital zur Verfügung zu stellen? Oliver Keilhauer geht diesen Fragen nach. Seine empirischen Untersuchungsergebnisse zeigen, dass sektorspezifische Besonderheiten wie die Ungewissheit der staatlichen Förderung und ein nur geringes finanzielles Renditepotential die Investitionstätigkeit im Erneuerbare-Energien-Sektor einschränken. Sie zeigen aber auch, dass Investoren mit zunehmender Erfahrung besser mit diesen Hindernissen umgehen können. Hieraus ergeben sich erstmals klare Handlungsempfehlungen, wie sich das Investitionsumfeld für Venture Capital-Investoren zielgerichtet verbessern lässt.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: German
    Type: doctoralthesis , doc-type:doctoralThesis
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  • 2
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    Strategische Frühaufklärung : ein ganzheitlicher Ansatz als Leitfaden für Unternehmen (2015)
    München : Oekom-Verl. | Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie
    Details
    Publication Date: 2022-02-18
    Description: Unternehmen sind heutzutage mit einer Vielzahl von Herausforderungen und Veränderungen konfrontiert, die zugleich Chance und Risiko für ihre wirtschaftliche Weiterentwicklung darstellen. Dazu gehören nicht nur grundlegende Trends wie Klimawandel, Ressourcenknappheit oder Urbanisierung, sondern auch der Wandel von Technologien, Geschäftsmodellen, gesetzlichen Rahmenbedingungen oder der gesellschaftlichen Akzeptanz. All dies hat globale und nationale Veränderungen in Märkten zur Folge und stellt die darin operierenden Unternehmen vor konkrete Herausforderungen. Die Auseinandersetzung mit der Zukunft gewinnt somit immer mehr an Bedeutung und stellt einen wichtigen Faktor für den langfristigen und nachhaltigen Erfolg eines Unternehmens dar. Die Strategische Frühaufklärung unterstützt Unternehmen dabei, Herausforderungen und Veränderungen rechtzeitig zu identifizieren und darauf zu reagieren. Stefan Reicherz erstellt eine flexible Blaupause hierfür: Individuell an ein Unternehmen angepasst, liefert sie diesem die notwendigen Informationen und Hilfsmittel, um erfolgreiche Strategische Frühaufklärung durchzuführen - und damit aus Risiken Chancen werden zu lassen.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: German
    Type: doctoralthesis , doc-type:doctoralThesis
    Format: application/pdf
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  • 3
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    [Perspective] Molecular sieves for gas separation (2016)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2016-07-08
    Description: Separation and purification are critical industrial processes for separating components of chemical mixtures, and these processes account for about half of industrial energy usage (1). Gas mixtures of compounds with very similar physical properties are particularly difficult to separate. On pages 137 and 141 of this issue, Cadiau et al. (2) and Cui et al. (3), respectively, show that microporous materials can be designed to have high adsorption capacity and selectivity for particular hydrocarbons, enabling energy-efficient separation. Author: Jerry Y. S. Lin
    Keywords: Chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    [Perspective] How to break down crystalline cellulose (2016)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2016-05-27
    Description: Biomass-degrading microorganisms use lytic polysaccharide monooxygenase (LPMO) enzymes to help digest cellulose, chitin, and starch. By cleaving otherwise inaccessible crystalline cellulose chains, these enzymes provide access to hydrolytic enzymes. LPMOs are of interest to biotechnology because efficient depolymerization of cellulose is a major bottleneck for the production of biologically based chemicals and fuels. On page 1098 of this issue, Kracher et al. (1) compare LPMO-reducing substrates in fungi from different taxonomic groups and lifestyles, based on both biochemical and genomic evidence. The results provide insights into reductive activation of LPMO that are important for developing more efficient industrial enzymes for lignocellulose biorefineries. Author: Angel T. Martínez
    Keywords: Chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    [Editors' Choice] Engineering open structures using DNA (2016)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2016-03-25
    Description: Author: Marc S. Lavine
    Keywords: Chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    [Editors' Choice] Activating Inflammation (2016)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2016-07-01
    Description: Author: Stella M. Hurtley
    Keywords: Cell Biology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    [Perspective] Disrupted nuclear import-export in neurodegeneration (2016)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2016-08-16
    Description: The major human neurodegenerative diseases, including Alzheimer's, amyotrophic lateral sclerosis, Parkinson's, and Huntington's diseases, are associated with accumulation and aggregation of misfolded proteins. In most cases, the majority of aberrantly aggregated proteins are found in the cell cytoplasm. However, in disorders caused by the expansion of a trinucleotide repeat, including Huntington's disease and spinocerebellar ataxia, the corresponding aggregates of proteins containing the encoded polyglutamine expansions are predominantly nuclear. Whether differences in intracellular location matter for the toxicity generated by such proteins has not been determined. On page 173 of this issue, Woerner et al. (1) report that the location does indeed matter, with toxicity arising from the cytoplasmic accumulation of a pair of artificial proteins designed to mimic the properties of amyloid aggregates. Surprisingly, forcing the same artificial proteins into the nucleus substantially reduces their toxicity. Authors: Sandrine Da Cruz, Don W. Cleveland
    Keywords: Cell Biology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    [Editors' Choice] Remodeling DNA by phases (2016)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2016-06-10
    Description: Author: Guy Riddihough
    Keywords: Cell Biology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Left- or right-handed C-H bond activation (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-02-16
    Keywords: Chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Lipopolysaccharide is transported to the cell surface by a membrane-to-membrane protein bridge (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-02-16
    Description: Gram-negative bacteria have an outer membrane that serves as a barrier to noxious agents in the environment. This protective function is dependent on lipopolysaccharide, a large glycolipid located in the outer leaflet of the outer membrane. Lipopolysaccharide is synthesized at the cytoplasmic membrane and must be transported to the cell surface. To understand this transport process, we reconstituted membrane-to-membrane movement of lipopolysaccharide by incorporating purified inner and outer membrane transport complexes into separate proteoliposomes. Transport involved stable association between the inner and outer membrane proteoliposomes. Our results support a model in which lipopolysaccharide molecules are pushed one after the other in a PEZ dispenser–like manner across a protein bridge that connects the inner and outer membranes.
    Keywords: Cell Biology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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