220 research outputs found

    Zone line formation on artificial media and in hardwoods by basidiomycetes for production of spalted wood

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    One of the visual modification of wood is the formation of dark zone lines (ZLs) via interaction of fungi. The result is called spalted wood, which has hitherto been produced mainly in small batches. The main goal of the present study is to further develop techniques for rapid formation of ZLs in hardwoods. Various white rot and brown rot fungi were tested to this purpose. Initially, interactions of 148 combinations of 17 basidiomycetes in malt extract agar were evaluated and their antagonistic interactions were characterised in order to identify fungal pairs capable of rapidly forming high-quality ZLs. Six types of interactions were observed, among others; antibiosis and inhibition in contact, which differ in terms of variables including mycelial overgrowth and zone line formation. Furthermore, 23 pairs of ZL forming fungi on malt extract agar were identified. Then the interactions of five selected pairs of fungi grown on the hardwood species Acer pseudoplatanus L., Betula pendula Roth. and Populus nigra L. were examined to assess their utility for controlled mycological wood modification, also in terms of a possible substrate dependency of their interactions. The results indicate that Lentinus tigrinus fungus is one of the best and quickest producer of ZLs in mycological wood modification

    State-of-the-Art and Requirements for Collecting and Managing Sustainability Data Along Today's Supply Chains

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    Today, companies of all sizes need to gather, manage and deliver a wide range of sustainability information due to public demand, regulations and laws. However, in order to calculate reliable measurements, they face the tremendous challenge to gather heterogeneous sustainability information along their dynamic and complex supply chains. As there is no systematic support yet, the EU project SustainHub aims to develop an information system supporting complex sustainability data collection processes along supply chains. Therefore, the project’s consortium has established a solid base of requirements and state of the art which are presented in this paper in a consolidated way to enrich the discussion about life cycle management

    Organic moderator-coolant in-pile irradiation loop for the MIT nuclear reactor : October 1, 1958 to October 1, 1959

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    Includes bibliographical references (leaf 34)First annual report; to October 1, 1958 to October 1, 1959Work performed under contract with Atomics International of North American Aviation, Inc. N9-S-514Division of Sponsored Research Project no. 8091Atomic Energy Commission contract no. AT(10-1)-106

    XENOKAT – Biofilter für Xenobiotika in der Ressource Wasser

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    Aus der Einleitung: "Xenobiotika werden durch den Menschen in die Stoffkreisläufe der Natur eingebracht, sie sind dort ursprünglich nicht anzutreffen. Dazu zählen auch Medikamente, die der menschliche Körper in kurzer Zeit wieder ausscheidet ohne diese abzubauen. Die bestehenden Abwasserreinigungsanlagen sind derzeit nicht in der Lage diese Frachten vollständig zu eliminieren, sodass sie unweigerlich in die Umwelt gelangen und dort undefiniert Einfluss nehmen. Xenobiotika können bereits in den großen Wasserreservoirs der Erde detektiert werden, die Prognose für die nächsten Jahre zeigt eine 30% Steigerung der Emissionen auf. In Deutschland gelangen z.B. jährlich 63 Tonnen des Schmerzmittels Diclofenac in die Flüsse (Bundesumweltamt 2014). Der Mensch hinterlässt regelrechte anthropogene Fußabdrücke, bestehend aus Schmerzmitteln, Antibiotika und Hormonen. Die problematischen Emissionen einiger Xenobiotika treten anhand von Folgeerscheinungen weltweit immer gravierender zutage (Bundesumweltamt 2014). So müssen das globale Artensterben (Geier in Indien), die Verweiblichung von Tierpopulationen in aquatischen Systemen und Krebserkrankungen mit partiell hohen Xenobiotika-Belastungen in der Umwelt in Zusammenhang gebracht werden. Die Entfernung von Xenobiotika insbesondere aus den Wasserkreisläufen stellt eine große ökonomische als auch ökologische Herausforderung zum Schutz der Lebensräume dar. ...

    Radiopyrolysis

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    Statement of responsibility on title-page reads: E.A. Mason, T.H. Timmins, D.T. Morgan, and W.N. Bley"Issued: October 1966.""MIT-334-70 Reactor Technology."Also issued by T.H. Timmins and supervised by E.A. Mason as an Sc. D. thesis , Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1967Includes bibliographical references (pages A6.1-A6.7)MIT DSR Project no. 79819Work performed for the Savannah River Operations Office, U.S. Atomic Energy Commission under Contract no. AT(38-1)-33

    In-pile loop irradiation studies of organic coolant materials : progress report, October 1, 1965 - December 31, 1965

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    "Issued: April 1, 1966.""AEC Research and Development Report"--Cover"MIT-334-48 ,Reactor Technology, Standard TID 4500."Includes bibliographical references (leaf 28)Progress report; October 1, 1965 - December 31, 1965M.I.T. project no. DSR 9819U.S. Atomic Energy Commission, Savannah River Operations Office contract no. AT(38-1)-33

    Determination of culture design spaces in shaken disposable cultivation systems for CHO suspension cell cultures

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    Processes involving mammalian cell cultures - especially CHO suspension cells - dominate biopharmaceutical manufacturing. These processes are usually developed in small scale orbitally shaken cultivation systems, and thoroughly characterizing these cultivation systems is crucial to their application in research and the subsequent scale-up to production processes. With the knowledge of process engineering parameters such as oxygen transfer rate, mixing time, and power input, in combination with the demands set by the biological production system, biomass growth and product yields can be anticipated and even increased. However, the available data sources for orbitally shaken cultivation systems are often incomplete and thus not sufficient enough to generate suitable cultivation requirements. Furthermore, process engineering knowledge is inapplicable if it is not linked to the physiological demands of the cells. In the current study, a simple yet comprehensive approach for the characterization and design space prediction of orbitally shaken single-use cultivation systems is presented, including the “classical” Erlenmeyer shake flask, the cylindrical TubeSpin bioreactor and the alternately designed Optimum Growth flask. Cultivations were performed inside and outside the design space to validate the defined culture conditions, so that cultivation success (desired specific growth rates and viable cell densities) could be achieved for each cultivation system
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