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Modellgestützte Bewertung der Nutzung von Biokohle als Bodenzusatz in der Landwirtschaft

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Book Series: Produktion und Energie / Karlsruher Institut für Technologie, Institut für Industriebetriebslehre und industrielle Produktion u. Deutsch-Französisches Institut für Umweltforschung ISSN: 21942404 ISBN: 9783731505594 Year: Volume: 19 Pages: XVIII, 287 p. DOI: 10.5445/KSP/1000057625 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Business and Management
Added to DOAB on : 2019-07-30 20:01:58
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This work provides an economic and ecological assessment of the application of biochar as soil amendment and identifies important influencing factors. Therefore, a multi-stage model including various methods, e.g. an ecosystem simulation of the soil, is developed. The assessment model is based on material and energy flow balances along the overall value chain – from biochar production to its application as soil amendment.

Zyklus und Serie - Van Goghs Ansichten des ummauerten Feldes in Saint-Rémy

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ISBN: 9783863953959 Year: DOI: 10.17875/gup2018-1120 Language: German
Publisher: Universitätsverlag Göttingen
Subject: Arts in general
Added to DOAB on : 2019-01-17 11:41:37

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A few weeks before van Gogh admitted himself into a mental hospital in Saint-Rémy in spring 1889 he had written to Gauguin that he wanted to create a “consolatory art for distressed hearts”. From his bedroom in the clinic he overlooked an enclosed wheat field. Over the course of a year the seasonal changes inspired Van Gogh to paint a cycle of this wheat field, thereby seeing it as an allegorical representation of the fate of human life, which comforted him.

Keywords

van Gogh --- cycle --- wheat field

Des crises commerciales et de leur retour périodique

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ISBN: 9782847885774 Year: Language: French
Publisher: ENS Éditions
Added to DOAB on : 2015-05-19 12:22:25
License: OpenEdition licence for Books

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Au milieu des années 1850, l’économiste français Clément Juglar présenta l’une des premières expressions de l’idée de cycle économique. Il publia en 1862, Des crises et de leur retour périodique en France, en Angleterre et aux États-Unis. Il travailla le reste de sa vie à mieux fonder théoriquement et empiriquement ses premières intuitions sur le cycle d’une dizaine d’années (prospérité-crise-dépression) qui lui paraissait rythmer l’évolution économique moderne. En 1889 il publiait la deuxièm...

Perceforest : Un roman arthurien et sa réception

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ISBN: 9782753557703 DOI: 10.4000/books.pur.52202 Language: French
Publisher: Presses universitaires de Rennes
Subject: Languages and Literatures
Added to DOAB on : 2019-12-06 13:15:47
License: OpenEdition Licence for Books

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Le Roman de Perceforest est l'un des derniers récits arthuriens du Moyen Âge et certainement le plus long roman de la langue française. On y trouve aussi bien l'une des plus anciennes versions de la Belle au Bois dormant, que des tournois, des joutes, des vols diaboliques et un sabbat, ainsi que des histoires d'amours tumultueuses et des merveilles étonnantes comme le luiton Zéphir. En cours d'édition par Gilles Roussineau, ce roman-fleuve est actuellement l'objet d'une réévaluation. Le présent volume dresse à la fois le bilan des recherches contemporaines, propose des avancées et de nouvelles perspectives et ouvre des champs d'investigation prometteurs. La première partie aborde le problème des sources (écrites, folkloriques, romanesques, encyclopédiques…) et celui de la datation et de la tradition manuscrite de l'œuvre. La seconde met en évidence la cohérence thématique du roman, autour de l'amour et des pratiques chevaleresques (fêtes, héraldique), l'habileté de son écriture, dont témoignent l'art des discours et la mise en scène des paysages, et sa construction savante, qu'organisent la généalogie, les enjeux herméneutiques et l'usage de l'entrelacement. Loin d'être un « fatras à quoi l'enfance s'amuse » (pour reprendre l'expression de Montaigne), Perceforest est une œuvre concertée, complexe, foisonnante. On comprend dès lors la richesse de sa réception, étudiée dans la troisième partie, autour des diverses copies qui en ont été faites, des imprimés du XVIe siècle, ou de sa reprise dans la Bibliothèque universelle des romans, sans oublier son influence sur la littérature renaissante, et sa traduction, aussi bien dans le Parsaforesto italien du XVIe siècle, qu'en français moderne.

Designing Sustainable Technologies, Products and Policies

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ISBN: 9783319669809/9783319669816 Year: Volume: 1 Pages: 520 DOI: https://doi.org/10.1007/978-3-319-66981-6 Language: English
Publisher: Springer
Subject: Environmental Engineering
Added to DOAB on : 2019-09-10 16:32:12
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This open access book provides insight into the implementation of Life Cycle approaches along the entire business value chain, supporting environmental, social and economic sustainability related to the development of industrial technologies, products, services and policies; and the development and management of smart agricultural systems, smart mobility systems, urban infrastructures and energy for the built environment. The book is based on papers presented at the 8th International Life Cycle Management Conference that took place from September 3-6, 2017 in Luxembourg, and which was organized by the Luxembourg Institute of Science and Technology (LIST) and the University of Luxembourg in the framework of the LCM Conference Series.

The microbial nitrogen cycle

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889194124 Year: Pages: 174 DOI: 10.3389/978-2-88919-412-4 Language: English
Publisher: Frontiers Media SA
Subject: Microbiology --- Science (General)
Added to DOAB on : 2015-12-10 11:59:06
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Nitrogen is an essential element in biological systems, and one that often limits production in both aquatic and terrestrial systems. Due to its requirement in biological macromolecules, its acquisition and cycling have the potential to structure microbial communities, as well as to control productivity on the ecosystem scale. In addition, its versatile redox chemistry is the basis of complex biogeochemical transformations that control the inventory of fixed nitrogen, both in local environments and over geological time. Although many of the pathways in the microbial nitrogen cycle were described more than a century ago, additional fundamental pathways have been discovered only recently. These findings imply that we still have much to learn about the microbial nitrogen cycle, the organisms responsible for it, and their interactions in natural and human environments. Progress in nitrogen cycle research has been facilitated by recent rapid technological advances, especially in genomics and isotopic approaches. In this Research Topic, we reviewed the leading edge of nitrogen cycle research based on these approaches, as well as by exploring microbial processes in modern ecosystems.

Life Cycle Assessment on Green Building Implementation

ISBN: 9783038422563 9783038422570 Year: Pages: XIV, 214 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Engineering
Added to DOAB on : 2016-09-02 17:52:30
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Greenhouse-gas emissions have become one of the most impacting environmental issues in today’s society. A rapidly increasing trend in global CO2emissions particularly since the early nineties (23.64% since 1990) has led to the generation of about 50,000 million tons of CO2–equivalent (eqv) worldwide in 2010. According to mainstream climate experts, the increasing concentration of greenhouse-gases is having a warming effect on the world climate. To slow down global warming, there is a global focus on reducing greenhouse-gas emissions. Life cycle assessment in green building implementation is the focus of this Special Issue.

Microbial Connections Between the Subsurface Sulfur Cycle and Other Elemental Cycles

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889456529 Year: Pages: 213 DOI: 10.3389/978-2-88945-652-9 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Microbiology --- Geography
Added to DOAB on : 2019-01-23 14:53:43
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Sulfur has many redox states and is a major metabolite in suboxic and anaerobic environments including, but not restricted to, marine and marginal marine sediments, the water column of oxygen minimum zones, salt marshes and oil wells. Microbially mediated redox cycling of sulfur typically comprises dissimilatory sulfate reduction (MSR), sulfide reoxidation, disproportionation and the oxidation and reduction of sulfur redox intermediates. These processes contribute to the degradation of organic matter, link the cycles of sulfur and carbon, control the production and consumption of methane and are critical for the long term budget of O2 in the atmosphere. Microbial and abiotic processes at redox interfaces also connect the sulfur cycle to the redox cycles of nitrogen, iron and other elements, producing distinctive geochemical and molecular signatures. Studies that couple microbiology with stable isotope geochemistry have informed interpretations of microbial sulfur cycling in modern and past environments. Laboratory-based studies and models of MSR have sought to understand the physiological and environmental controls of the magnitude of sulfur isotope fractionation. The fractionations of stable sulfur and oxygen isotopes during MSR are also used to track enzymatic activity during MSR and processes that oxidize sulfide in the presence of environmental oxidants. Outstanding questions in the field concern the importance of oxidative processes within the natural environment, the delivery of oxidants and carbon sources to the zones of sulfate reduction and the ability to detect or reconstruct oxidative processes from the chemical, isotopic, metagenomic, transcriptomic, proteomic and metabolomics profiles in the environment. Recent studies have emphasized the complex connections between sulfur and methane, iron, nitrogen and other elements. These links may involve the redox cycling of species that occur at concentrations difficult to detect by standard geochemical techniques or that are cycled at very rapid rates (cryptic cycles). Of particular interest is the use of isotope geochemistry to quantify links among various electron acceptors, including sulfate, ferric iron, and nitrate, during the anaerobic methane oxidation. For example, recent geochemical measurements have hinted that microbial sulfate reduction coupled to organic matter oxidation is mechanistically different to when sulfate reduction is coupled to methane oxidation. Recent studies have also suggested a possible contribution of a number of previously uncultured microbial groups in sulfur cycling in sulfidic environments, inspiring further studies of these organisms and their partnerships in anaerobic environments. This Research Topic highlights studies of microbial interactions, processes and communities that couple the sulfur cycle to the cycles of other elements in aphotic environments.

Proliferation-Proof Uranium/Plutonium Fuel Cycles: Safeguards and Non-Proliferation

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ISBN: 9783866446144 Year: Pages: 383 p. DOI: 10.5445/KSP/1000021572 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Physics (General)
Added to DOAB on : 2019-07-30 20:01:58
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After description of the uranium / plutonium fuel cycle results are reported for various isotopic compositions of reactor-grade plutonium for usability in hypothetical nuclear explosive devices. It is shown that it is mainly thermal analyses, besides neutron physics analyses, which indicate the limits of concentration of the Pu-238 plutonium isotope. Above these limits, such hypothetical nuclear explosive devices are not feasible technically. In the light of this finding, future proliferation-proof fuel cycles are proposed which make use of recent methods of actinide transmutation.The author is honorary professor at the Karlsruhe Institute of Technology (KIT) and emeritus director of the former Institute for Neutron Physics and Reactor Engineering of the former Karlsruhe Research Center. For many years he was a member and, for some time, chairman of the German Advisory Committee on Reactor Safeguards (RSK).He is a member of the European Nuclear Society (ENS) and a member and fellow of the American Nuclear Society (ANS).

Verfahren zur Prädiktion des Rollwiderstands bei variablen Betriebsparametern auf Basis standardisierter Rollwiderstandsmessungen

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Book Series: Karlsruher Schriftenreihe Fahrzeugsystemtechnik / Institut für Fahrzeugsystemtechnik ISSN: 18696058 ISBN: 9783731508984 Year: Volume: 71 Pages: XIV, 194 p. DOI: 10.5445/KSP/1000091012 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:00
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As a contribution to environmental protection, the EU tyre label was introduced. However, the best label value does not necessarily imply the lowest rolling resistance under real operating conditions. This research work aims to develop a model to predict the rolling losses of car tyres based on standardized rolling resistance measurements. Using this model, the rolling resistance at variable operating parameters will be predicted.

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