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  • 1
    Keywords: Environment ; Industrial management ; Environmental aspects ; Urban ecology (Biology) ; Sustainable development ; Natural resources ; Environment ; Natural Resources ; Urban Ecology ; Sustainability Management ; Sustainable Development
    Description / Table of Contents: Inhalt --- Abkürzungsverzeichnis --- Glossar --- Zusammenfassung --- 1. Einleitung --- 1.1 Ressourceneffizienz --- 1.2 Möglichkeiten und Grenzen der Ressourceneffizienz-Bewertung mit der ESSENZ-Methode --- 2. Ablauf der Ressourceneffizienz-Bewertung mit der ESSENZ-Methode --- 3. Modellierung des Produktsystems --- 3.1 Ziel und Untersuchungsrahmen --- 3.2 Sachbilanz --- 4. Methodik zur Bewertung der Ressourceneffizienz-Dimensionen --- 4.1 Methodik zur Bewertung der Verfügbarkeit von Metallen und fossilen Rohstoffen --- 4.2 Methodik zur Bewertungen der gesellschaftlichen Akzeptanz --- 4.3 Methodik zur Bewertung der Umweltauswirkungen --- 4.4 Bewertung des Nutzen --- 5. Berechnung der Ressourceneffizienz --- 5.1 Allgemeines Vorgehen --- 5.2 Berechnung der Verfügbarkeit für Metalle und fossile Rohstoffe --- 5.3 Berechnung der gesellschaftlichen Akzeptanz --- 5.4 Berechnungen der Umweltauswirkungen --- 5.5 Ermittlung der Ressourceneffizienz --- 6. Interpretation der Ergebnisse --- 6.1 Unsicherheiten in der Bewertung --- 6.2 Interpretation der Verfügbarkeit --- 6.3 Interpretation der gesellschaftlichen Akzeptanz --- 6.4 Interpretation der Umweltbewertung --- 6.5 Interpretation der ermittelten Ressourceneffizienz --- 6.6 Interpretation des Gesamtergebnisses --- 7. Aggregation zum Vergleich von Produktalternativen --- 8. Fazit und Ausblick --- 9. Referenzen --- Anhang 1 – Charakterisierungsfaktoren für Metalle und fossile Rohstoffe --- Anhang 2 - Wirkungsindikatorbeträge --- Anhang 3 – Distance-to-Target-Werte --- Anhang 4 – Globale Produktionsdaten --- Anhang 5 – Maximale normalisierte Distance-to-Target-Werte --- Anhang 6 – Normalisierte Distance-to-Target-Werte --- Anhang 7 – Auswertung der Stakeholder-Befragung --- Anhang 8 – Darstellung der Berechnung der Charakterisierungsfaktoren am Beispiel Silber
    Pages: Online-Ressource (XII, 161 Seiten)
    ISBN: 9783662492642
    Language: German
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  • 2
    Keywords: Environment ; Industrial management ; Environmental aspects ; Urban ecology (Biology) ; Sustainable development ; Natural resources ; Environment ; Natural Resources ; Urban Ecology ; Sustainability Management ; Sustainable Development
    Description / Table of Contents: Inhalt --- Abkürzungsverzeichnis --- Glossar --- Zusammenfassung --- 1. Einleitung --- 1.1 Ressourceneffizienz --- 1.2 Möglichkeiten und Grenzen der Ressourceneffizienz-Bewertung mit der ESSENZ-Methode --- 2. Ablauf der Ressourceneffizienz-Bewertung mit der ESSENZ-Methode --- 3. Modellierung des Produktsystems --- 3.1 Ziel und Untersuchungsrahmen --- 3.2 Sachbilanz --- 4. Methodik zur Bewertung der Ressourceneffizienz-Dimensionen --- 4.1 Methodik zur Bewertung der Verfügbarkeit von Metallen und fossilen Rohstoffen --- 4.2 Methodik zur Bewertungen der gesellschaftlichen Akzeptanz --- 4.3 Methodik zur Bewertung der Umweltauswirkungen --- 4.4 Bewertung des Nutzen --- 5. Berechnung der Ressourceneffizienz --- 5.1 Allgemeines Vorgehen --- 5.2 Berechnung der Verfügbarkeit für Metalle und fossile Rohstoffe --- 5.3 Berechnung der gesellschaftlichen Akzeptanz --- 5.4 Berechnungen der Umweltauswirkungen --- 5.5 Ermittlung der Ressourceneffizienz --- 6. Interpretation der Ergebnisse --- 6.1 Unsicherheiten in der Bewertung --- 6.2 Interpretation der Verfügbarkeit --- 6.3 Interpretation der gesellschaftlichen Akzeptanz --- 6.4 Interpretation der Umweltbewertung --- 6.5 Interpretation der ermittelten Ressourceneffizienz --- 6.6 Interpretation des Gesamtergebnisses --- 7. Aggregation zum Vergleich von Produktalternativen --- 8. Fazit und Ausblick --- 9. Referenzen --- Anhang 1 – Charakterisierungsfaktoren für Metalle und fossile Rohstoffe --- Anhang 2 - Wirkungsindikatorbeträge --- Anhang 3 – Distance-to-Target-Werte --- Anhang 4 – Globale Produktionsdaten --- Anhang 5 – Maximale normalisierte Distance-to-Target-Werte --- Anhang 6 – Normalisierte Distance-to-Target-Werte --- Anhang 7 – Auswertung der Stakeholder-Befragung --- Anhang 8 – Darstellung der Berechnung der Charakterisierungsfaktoren am Beispiel Silber
    Pages: Online-Ressource (XII, 161 Seiten)
    ISBN: 9783662492642
    Language: German
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  • 3
    Publication Date: 2023-12-14
    Description: 〈title xmlns:mml="http://www.w3.org/1998/Math/MathML"〉Abstract〈/title〉〈p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en"〉The supply of water, food, and energy in our global economy is highly interlinked. Virtual blue water embedded into internationally traded food crops has therefore been extensively researched in recent years. This study focuses on the often neglected energy needed to supply this blue irrigation water. It provides a globally applicable and spatially explicit approach to the watershed level for water source specific quantification of energy consumption and related greenhouse gas (GHG) emissions of irrigation water supply. The approach is applied to Israel's total domestic and imported food crop supply of 105 crops by additionally including import‐related transportation energy and emissions. Total energy use and related emissions of domestic crop production were much lower (551 GWh/422 kt CO〈sub〉2〈/sub〉‐equivalents [CO〈sub〉2〈/sub〉e]) than those embedded into crop imports (1639 GWh/649 kt CO〈sub〉2〈/sub〉e). Domestic energy and emissions were mainly attributable to the irrigation water supply with artificial water sources (treated domestic wastewater and desalinated water, 84%). Transport accounted for 79% and 66% of virtually imported energy and emissions, respectively. Despite transport, specific GHG emissions (CO〈sub〉2〈/sub〉e per ton of crop) were significantly lower for several crops (e.g., olives, almonds, chickpeas) compared to domestic production. This could be attributed to the high share of energy‐intensive artificial water supply in combination with higher irrigation water demands in Israel. In the course of an increasing demand for artificial water supply in arid and semi‐arid regions, our findings point to the importance of including “energy for water” into comparative environmental assessment of crop supply to support decision‐making related to the water–energy–food nexus.〈/p〉
    Description: MedWater
    Description: Federal Ministry of Education and Research, Germany
    Keywords: ddc:553.7 ; agricultural water use ; energy for water ; industrial ecology ; Israel ; virtual water flows ; greenhouse gas emissions
    Language: English
    Type: doc-type:article
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Polymer bulletin 33 (1994), S. 521-528 
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Poly(styrene)-block-poly(ethyleneoxide), abbreviated as (PS-b-PEO) were used as emulsifiers in emulsion polymerization of styrene and methyl methacrylate. The block copolymers had a poly(styrene) block with Mn=1000 g/mol and a poly(ethyleneoxide) block with Mn=1000, 3000 or 5000 g/mol, respectively. Stable dispersions were obtained when the PEO block molecular weight was higher than 1000 g/mol. Also the amphiphilic properties of the copolymers depended on the PEO chain length. Block copolymer micelles with hydrodynamic radii between 11 and 17nm were observed. Emulsion polymerization was performed at different block copolymer concentration at 60 and 80°C. Particle size varied between 50 and 300nm and decreased with increasing copolymer concentration. The particle size was larger at higher temperature, but the size distribution was narrower. Polymerization of methyl methacrylate gave smaller particles when compared to styrene. The dispersions were very stable towards high electrolyte concentration, but flocculation occurred at elevated temperatures. Both observations indicate that the dispersions are sterically stabilized.
    Type of Medium: Electronic Resource
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  • 5
    Publication Date: 2020-08-27
    Description: Various studies investigated the fate of evaporation and the origin of precipitation. The more recent studies among them were often carried out with the help of numerical moisture tracking. Many research questions could be answered within this context, such as dependencies of atmospheric moisture transfers between different regions, impacts of land cover changes on the hydrological cycle, sustainability-related questions, and questions regarding the seasonal and interannual variability of precipitation. In order to facilitate future applications, global datasets on the fate of evaporation and the sources of precipitation are needed. Since most studies are on a regional level and focus more on the sources of precipitation, the goal of this study is to provide a readily available global dataset on the fate of evaporation for a fine-meshed grid of source and receptor cells. The dataset was created through a global run of the numerical moisture tracking model Water Accounting Model-2layers (WAM-2layers) and focused on the fate of land evaporation. The tracking was conducted on a 1.5∘×1.5∘ grid and was based on reanalysis data from the ERA-Interim database. Climatic input data were incorporated in 3- to 6-hourly time steps and represent the time period from 2001 to 2018. Atmospheric moisture was tracked forward in time and the geographical borders of the model were located at ±79.5∘ latitude. As a result of the model run, the annual, the monthly and the interannual average fate of evaporation were determined for 8684 land grid cells (all land cells except those located within Greenland and Antarctica) and provided via source–receptor matrices. The gained dataset was complemented via an aggregation to country and basin scales in order to highlight possible usages for areas of interest larger than grid cells. This resulted in data for 265 countries and 8223 basins. Finally, five types of source–receptor matrices for average moisture transfers were chosen to build the core of the dataset: land grid cell to grid cell, country to grid cell, basin to grid cell, country to country, basin to basin. The dataset is, to our knowledge, the first ready-to-download dataset providing the overall fate of evaporation for land cells of a global fine-meshed grid in monthly resolution. At the same time, information on the sources of precipitation can be extracted from it. It could be used for investigations into average annual, seasonal, and interannual sink and source regions of atmospheric moisture from land masses for most of the regions in the world and shows various application possibilities for studying interactions between people and water, such as land cover changes or human water consumption patterns. The dataset is accessible under https://doi.org/10.1594/PANGAEA.908705 (Link et al., 2019a) and comes along with example scripts for reading and plotting the data.
    Print ISSN: 1866-3508
    Electronic ISSN: 1866-3516
    Topics: Geosciences
    Published by Copernicus
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  • 6
    Publication Date: 1994-10-01
    Print ISSN: 0170-0839
    Electronic ISSN: 1436-2449
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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  • 7
    Publication Date: 2010-07-02
    Print ISSN: 1535-3893
    Electronic ISSN: 1535-3907
    Topics: Chemistry and Pharmacology
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  • 8
    Publication Date: 2014-08-10
    Description: Collecting sensor data in industrial environments from up to some tenth of battery-powered sensornodes with sampling rates up to 100 Hz requires energy-aware protocols, which avoid collisionsand long listening phases. The IEEE 802.15.4 standard focuses on energy-aware wireless sensornetworks (WSNs) and the Task Group 4e has published an amendment to fulfill up to 100 sensorvalue transmissions per second per sensor node (low latency deterministic network (LLDN) mode)to satisfy demands of factory automation. To improve the reliability of the data collection in the startopology of the LLDN mode, we propose a relay strategy, which can be performed within the LLDNschedule. Furthermore, we propose an extension of the star topology to collect data from two-hopsensor nodes. The proposed retransmission mode enables power savings in the sensor node of morethan 33%, while reducing the packet loss by up to 40%. To reach this performance, an optimumspatial distribution is necessary, which is discussed in detail.
    Print ISSN: 1687-1472
    Electronic ISSN: 1687-1499
    Topics: Electrical Engineering, Measurement and Control Technology , Computer Science
    Published by Springer
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  • 9
    Publication Date: 2014-07-31
    Description: Journal of Medicinal Chemistry DOI: 10.1021/jm500791c
    Topics: Chemistry and Pharmacology
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  • 10
    Publication Date: 2015-09-05
    Print ISSN: 2190-5487
    Electronic ISSN: 2190-5495
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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