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Keywords
The invention relates to a system for the implementation of chemical, biological or physical reactions, consisting of - one or more magnetic micro-reactors, each comprising a shell made of hydrophobic magnetic nanoparticles encapsulating an aqueous core, - a plane platform comprising a surface to receive the micro-reactors, - a source that generates a magnetic field above or underneath the platform for manipulating the one or more hydrophobic magnetic micro-reactors, or for moving them along the surface of the platform from one position to another position, characterized in that the aqueous core of the one or more magnetic micro-reactors contains a reaction solution or buffer, and wherein the magnetic field generated by the source correlates to a defined position on the surface of the platform.
Biotechnological downstream processing is usually an elaborate procedure, requiring a multitude of unit operations to isolate the target component. Besides the disadvantageous space-time yield, the risks of cross-contaminations and product loss grow fast with the complexity of the isolation procedure. A significant reduction of unit operations can be achieved by application of magnetic particles, especially if these are functionalized with affinity ligands. As magnetic susceptible materials are highly uncommon in biotechnological processes, target binding and selective separation of such particles from fermentation or reactions broths can be done in a single step. Since the magnetizable particles can be produced from iron salts and low priced polymers, a single-use implementation of these systems is highly conceivable. In this article, the principles of magnetizable particles, their synthesis and functionalization are explained. Furthermore, applications in the area of reaction engineering, microfluidics and downstream processing are discussed focusing on established single-use technologies and development potential.
Commercial materials with polyvinylpolypyrrolidone and polymeric amberlites (XAD7HP, XAD16) are commonly used for the adsorptive downstream processing of polyphenols from renewable resources. In this study, beta-zeolite-based adsorbent systems were examined, and their properties were compared to organic resins. Batch adsorption experiments were conducted with synthetic solutions of major polyphenols. Adsorption isotherms and desorption characteristics of individual adsorbent were determined based on these results. Maximum adsorption capacities were calculated using the Langmuir model. For example, the zeolites had capacities up to 203.2 mg/g for ferulic acid. To extend these results to a complex system, additional experiments were performed on rapeseed meal and wheat seed extracts as representative renewable resources. HPLC analysis showed that with 7.5% w/v, which is regarded as the optimum amount of zeolites, zeolites A and B could bind 100% of the major polyphenols as well as release polyphenols at high yields. Additionally, regeneration experiments were performed with isopropyl alcohol at 99°C to evaluate how zeolites regenerate under mild conditions. The results showed only a negligible loss of adsorption capacity and no loss of desorption capacity. In summary, it was concluded that beta-zeolites were promising adsorbents for developing new processes to isolate polyphenols from renewable resources.
ETHICS is concerned with evaluating, measuring and making improvements in the thermal and energy performance of steel-clad and steel-framed buildings. It addresses basic building physics performance at a laboratory and full-scale level, and the preparation of design guidance for commercial, industrial and residential buildings. It includes the development of design tools to assist users in assessing whole-building performance, and calibrates these tools against whole-building measurements, which will be obtained from this research. Opportunities for renewable energy and other energy-saving features will be assessed. This project focuses on objectives that are of particular interest for the design of new steel constructions regarding energy efficiency. ETHICS investigates the as-built performance by on-site tests regarding air tightness and heat transfer properties of the building envelope and by monitoring the energy consumption and thermal comfort of selected up-to-date steel buildings. As energy efficiency is a key requirement for design and construction of buildings in the future, this project provides well-founded scientific data, which prove the high energy performance of current steel constructions and work out details for further improvements to maintain and extend the position of steel products in the construction sector.
Robust addresses the renovation and improvement of existing residential, industrial and commercial buildings using steel-based technologies, focusing on techniques such as over-cladding, over-roofing and roof-top extensions. Steel-intensive renovation techniques currently on the market were reviewed. Performance criteria were developed for over-cladding systems meeting current regulatory standards, with guidelines on how to achieve appropriate levels of air-tightness.
THEMA
06 Sie sind ihre eigenen Chefs | studierende setzen in eigenverantwortung Projekte um
08 Endlich am Ziel | Aixtreme Racing mit starkem Auftritt bei der Formula student Deutschland 2013
10 Schiff ahoi! | FH-studierende auf Forschungsexpedition in Schottland
12 Ein neues Herz für AC-FH 509 | studierende bauen einen smart auf elektroantrieb um
14 Und es schwimmt doch! | im Baustofflabor der FH Aachen bauen Studierende Kanus aus Beton
STUDIUM
16 Der Schwerkraft ein Schnippchen schlagen | Mark Görög studiert an der FH, arbeitet beim DLR und fliegt schwerelos über Frankreich
19 Tradition trifft Zukunft | Angehende Holzingenieure bauen Wanderhütte in der Eifel
20 In der Unterwelt | Der angehende Bauingenieur Markus Thomas arbeitet beim U-Bahn-Bau in Düsseldorf mit
22 Gegen Mobilfunk-Kriminalität | FH-Studenten unterstützen das Landeskriminalamt
24 Wie eine kleine Stadt | masterstudierende der Architektur entwerfen Neubau für Aachen-Maastrichter Flughafen
26 Mit Leidenschaft und Augenmaß | Parlamentspräsident Martin Schulz spricht mit FH-Studierenden über Europa
28 „Wir wollen nicht nur Oberflächen polieren“ | Drei junge Kommunikationsdesignerinnen gehen ihren eigenen Weg
30 Das Ringen um Erfolg | Jasmin Sefi Droudi und Yashar Jamali haben ein ungewöhnliches Hobby
32 Meldungen / Studium INTERNATIONAL
34 „Die Stadt ist unser größter Trumpf“ | BWL-studierende können einen Doppelabschluss mit der Wirtschaftsuniversität Krakau machen
36 Komm du mir mal nach Hause! | FH-Absolvent gründet erfolgreiches Versandunternehmen
38 Eine Brücke gebaut | Die Ningbo University of Technology feiert in diesem Jahr 30-jähriges Bestehen
39 Meldungen/International
FORSCHUNG UND TRANSFER
40 Neue Wege | An der FH werden Konzepte für die Zukunft der Mobilität entwickelt
44 Damit die Milch nicht sauer wird | Patrick Kirchner promoviert zum Thema „Überwachung antiseptischer Prozesse in der Lebensmittelproduktion“ – mit Auszeichnung
46 Schön und gut | Bei der Entwicklung von Produkten und Prozessen arbeitet Babor eng mit der FH zusammen
48 Zu Gast beim neuen Chef | Jobexpeditionen vermitteln Einblicke in die Unternehmenswelt
49 Emotionen hinter Maschinen und Mathematik | Miranda Fateri ging für drei Monate an die University of Southern California, Los Angeles
50 Frische Luft | Solarturmkraftwerk: neue Stahlreceiver verbessern den Wirkungsgrad
51 Mehr Licht | FH Aachen und Forschungszentrum Jülich besiegeln die Zukunft der regionalen Solarforschung
52 Unsichtbare Gefahr | Der Einfluss von Vibrationen im Rettungsflugbetrieb auf Pilot und Patient
54 Starker Partner FH Aachen | Die Hochschule erhält 1,7 Millionen Euro Förderung vom BMBF
55 Meldungen/Forschung und Transfer
PERSONEN
56 Leuchtturm am Forscherhorizont | Prof. Vaeßen wurde in den Senat der Fraunhofer-Gesellschaft gewählt
58 Verliebt in Tainan | Alexander Heimann lebt mit seiner taiwanesischen Freundin Sophia in Tainan und macht dort seinen Master
60 Diese Hilfe kommt an | FH-Absolvent Moritz Koch arbeitet zwei Monate lang in einem Aids-Camp in Kenia
61 Dr. Axel Thomas | Entertainer, Workaholic und jetzt auch Professor
62 Nachruf | Prof. Dr. Heino Rick ist verstorben
63 Nachruf | FH Aachen trauert um Prof. Dr. Christian Faber
64 Lehrprämien 2013
66 Neuberufene Professoren
SERVICE
68 Vom Winde verweht | Der neue Heißluftballon im FH-Kleid sorgt für Aufsehen in der Luft
70 Facebook | Die FH Aachen auf Facebook
71 Meldungen / Service, Messen und Veranstaltungen
78 Ortswechsel | Grenzen überschreiten
79 Impressum