@inproceedings{KahmannHacklWegmannetal.2016, author = {Kahmann, Stephanie and Hackl, Michael and Wegmann, Kilian and M{\"u}ller, Lars-Peter and Staat, Manfred}, title = {Impact of a proximal radial shortening osteotomy on the distribution of forces and the stability of the elbow}, series = {1st YRA MedTech Symposium 2016 : April 8th / 2016 / University of Duisburg-Essen}, booktitle = {1st YRA MedTech Symposium 2016 : April 8th / 2016 / University of Duisburg-Essen}, editor = {Erni, Daniel}, publisher = {Universit{\"a}t Duisburg-Essen}, address = {Duisburg}, organization = {MedTech Symposium}, doi = {10.17185/duepublico/40821}, pages = {7 -- 8}, year = {2016}, abstract = {The human arm consists of the humerus (upper arm), the medial ulna and the lateral radius (forearm). The joint between the humerus and the ulna is called humeroulnar joint and the joint between the humerus and the radius is called humeroradial joint. Lateral and medial collateral ligaments stabilize the elbow. Statistically, 2.5 out of 10,000 people suffer from radial head fractures [1]. In these fractures the cartilage is often affected. Caused by the injured cartilage, degenerative diseases like posttraumatic arthrosis may occur. The resulting pain and reduced range of motion have an impact on the patient's quality of life. Until now, there has not been a treatment which allows typical loads in daily life activities and offers good long-term results. A new surgical approach was developed with the motivation to reduce the progress of the posttraumatic arthrosis. Here, the radius is shortened by 3 mm in the proximal part [2]. By this means, the load of the radius is intended to be reduced due to a load shift to the ulna. Since the radius is the most important stabilizer of the elbow it has to be confirmed that the stability is not affected. In the first test (Fig. 1 left), pressure distributions within the humeroulnar and humeroradial joints a native and a shortened radius were measured using resistive pressure sensors (I5076 and I5027, Tekscan, USA). The humerus was loaded axially in a tension testing machine (Z010, Zwick Roell, Germany) in 50 N steps up to 400 N. From the humerus the load is transmitted through both the radius and the ulna into the hand which is fixed on the ground. In the second test (Fig. 1 right), the joint stability was investigated using a digital image correlation system to measure the displacement of the ulna. Here, the humerus is fixed with a desired flexion angle and the unconstrained forearm lies on the ground. A rope connects the load actuator with a hook fixed in the ulna. A guide roller is used so that the rope pulls the ulna horizontally when a tensile load is applied. This creates a moment about the elbow joint with a maximum value of 7.5 Nm. Measurements were performed with varying flexion angles (0°, 30°, 60°, 90°, 120°). For both tests and each measurement, seven specimens were used. Student's t-test was employed to determine whether the mean values of the measurements in native specimen and operated specimens differ significantly.}, language = {en} } @inproceedings{TeixeiraBouraNiederwestbergMcLeodetal.2016, author = {Teixeira Boura, Cristiano Jos{\´e} and Niederwestberg, Stefan and McLeod, Jacqueline and Herrmann, Ulf and Hoffschmidt, Bernhard}, title = {Development of heat exchanger for high temperature energy storage with bulk materials}, series = {AIP Conference Proceedings}, volume = {1734}, booktitle = {AIP Conference Proceedings}, number = {1}, doi = {10.1063/1.4949106}, pages = {050008-1 -- 050008-7}, year = {2016}, language = {en} } @incollection{KrauseOettel2016, author = {Krause, Thomas and Oettel, Britta}, title = {Baumaschinen}, series = {Zahlentafeln f{\"u}r den Baubetrieb}, booktitle = {Zahlentafeln f{\"u}r den Baubetrieb}, edition = {9., {\"u}berarb. und aktual. Aufl.}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-02838-1 (Online)}, doi = {10.1007/978-3-658-02838-1_9}, pages = {1069 -- 1163}, year = {2016}, abstract = {Die Leistungsermittlung und Bemessung von Baumaschinen f{\"u}r die folgenden Bereiche werden bearbeitet: Maschinen f{\"u}r den Betonbau, Hebezeuge, Maschinen f{\"u}r den Erdbau, Straßenbaumaschinen, R{\"u}ckbauger{\"a}te und Elemente der Baustelleneinrichtung}, language = {de} } @incollection{MartinMartin2016, author = {Martin, Joachim and Martin, Angelika}, title = {Gr{\"o}ßen, Formeln, Bemessung}, series = {Zahlentafeln f{\"u}r den Baubetrieb}, booktitle = {Zahlentafeln f{\"u}r den Baubetrieb}, edition = {9., {\"u}berarb. und aktual. Aufl.}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-02838-1 (Online)}, doi = {10.1007/978-3-658-02838-1_1}, pages = {1 -- 61}, year = {2016}, abstract = {Das Kapitel 1 vermittelt eine {\"U}bersicht f{\"u}r den schnellen Gebrauch von Gr{\"o}ßen, Einheiten und Zeichen. Es folgt die Darstellung wichtiger Grundlagen der Mathematik, Lastannahmen und einfacher statischer Systeme. Schließlich werden Hinweise zu charakteristischen Festigkeiten und Tragf{\"a}higkeitsnachweisen f{\"u}r Berechnungen im Mauerwerk, Holz- und Stahlbau sowie Stahlbetonbau gegeben. F{\"u}r eine weitere Vertiefung des Themas empfiehlt sich der Wendehorst Bautechnische Zahlentafel}, language = {de} } @inproceedings{StollenwerkRiekeDahmenetal.2016, author = {Stollenwerk, Dominik and Rieke, Christian and Dahmen, Markus and Pieper, Martin}, title = {Biogas Production Modelling : A Control System Engineering Approach}, series = {IOP Conference Series: Earth and Environmental Science. Bd. 32}, booktitle = {IOP Conference Series: Earth and Environmental Science. Bd. 32}, issn = {1755-1315}, doi = {10.1088/1755-1315/32/1/012008}, pages = {012008/1 -- 012008/4}, year = {2016}, language = {en} } @inproceedings{KoenigWolf2016, author = {K{\"o}nig, Johannes Alexander and Wolf, Martin R.}, title = {The pyramid assessment framework for 'competence developing games'}, series = {Communications in Computer and Information Science}, volume = {618}, booktitle = {Communications in Computer and Information Science}, editor = {Stephanidis, C.}, publisher = {Springer}, isbn = {978-331940541-4}, issn = {1865-0929}, doi = {10.1007/978-3-319-40542-1_37}, pages = {232 -- 237}, year = {2016}, language = {en} } @article{RothTippkoetter2016, author = {Roth, Jasmine and Tippk{\"o}tter, Nils}, title = {Evaluation of lignocellulosic material for butanol production using enzymatic hydrolysate medium}, series = {Cellulose Chemistry and Technology}, volume = {50}, journal = {Cellulose Chemistry and Technology}, number = {3-4}, publisher = {Editura Academiei Romane}, address = {Bukarest}, pages = {405 -- 410}, year = {2016}, abstract = {Butanol is a promising gasoline additive and platform chemical that can be readily produced via acetone-butanolethanol (ABE) fermentation from pretreated lignocellulosic materials. This article examines lignocellulosic material from beech wood for ABE fermentation, using Clostridium acetobutylicum. First, the utilization of both C₅₋ (xylose) and C₆₋ (glucose) sugars as sole carbon source was investigated in static cultivation, using serum bottles and synthetic medium. The utilization of pentose sugar resulted in a solvent yield of 0.231 g·g_sugar⁻¹, compared to 0.262 g·g_sugar⁻¹ using hexose. Then, the Organosolv pretreated crude cellulose fibers (CF) were enzymatically decomposed, and the resulting hydrolysate medium was analyzed for inhibiting compounds (furans, organic acids, phenolics) and treated with ionexchangers for detoxification. Batch fermentation in a bioreactor using CF hydrolysate medium resulted in a total solvent yield of 0.20 gABE·g_sugar⁻¹.}, language = {en} } @book{KrauseUlke2016, author = {Krause, Thomas and Ulke, Bernd}, title = {Zahlentafeln f{\"u}r den Baubetrieb}, editor = {Krause, Thomas and Ulke, Bernd}, edition = {9., {\"u}berarb. und aktual. Aufl.}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, isbn = {978-3-658-02838-1}, doi = {10.1007/978-3-658-02838-1}, pages = {XII, 1669 S. 490 Abb.}, year = {2016}, language = {de} } @article{SteinbauerFerrein2016, author = {Steinbauer, Gerald and Ferrein, Alexander}, title = {20 Years of RoboCup}, series = {KI - K{\"u}nstliche Intelligenz}, volume = {30}, journal = {KI - K{\"u}nstliche Intelligenz}, number = {3-4}, publisher = {Springer}, address = {Berlin}, issn = {1610-1987}, doi = {10.1007/s13218-016-0442-z}, pages = {221 -- 224}, year = {2016}, language = {en} } @misc{EngelTippkoetter2016, author = {Engel, M. and Tippk{\"o}tter, Nils}, title = {Einfluss eines Phenazin-Mediators und elektrischen Potenzials auf die Aceton-Butanol-Ethanol-Fermentation}, series = {Chemie Ingenieur Technik}, volume = {88}, journal = {Chemie Ingenieur Technik}, number = {9}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {0009-286X}, doi = {10.1002/cite.201650105}, pages = {1254}, year = {2016}, abstract = {In den letzten Jahren haben nachhaltige, biotechnologische Prozesse zunehmend an Bedeutung gewonnen. Die Aceton-Butanol-Ethanol-Fermentation (ABE-Fermentation) mit dem anaeroben Bakterium Clostridium acetobutylicum zur Gewinnung von Biobutanol k{\"o}nnte in diesem Zusammenhang eine M{\"o}glichkeit der nachhaltigen Kraftstoffproduktion darstellen. In dieser Arbeit wird der Einfluss zus{\"a}tzlich verf{\"u}gbarer Elektronen durch den Einsatz des Phenazin-Farbstoffs Neutralrot als Redoxmediator sowie das Anlegen eines elektrischen Potenzials w{\"a}hrend der ABE-Fermentation untersucht. Es wird gezeigt, dass das Neutralrot keinen Einfluss auf die Leerlaufspannung von ca. 500 mV vs. Ag/AgCl w{\"a}hrend der Fermentation hat. Der Mediator bewirkt allerdings eine fr{\"u}here Butanolbildung sowie h{\"o}here Butanolkonzentrationen. Wird zudem die Mediatorkonzentration von 125 mM auf 250 mM angehoben, wird dabei auch die maximale Butanolkonzentration um 36 \% ± 1,8 \% innerhalb von28 Stunden gesteigert.}, language = {de} } @inproceedings{StephanHeuermannPrantner2016, author = {Stephan, Achim and Heuermann, Holger and Prantner, Michael}, title = {Cutting human tissue with novel atmospheric-pressure microwave plasma jet}, series = {46th European Microwave Conference (EuMC)}, booktitle = {46th European Microwave Conference (EuMC)}, publisher = {IEEE}, isbn = {978-2-87487-043-9}, doi = {10.1109/EuMC.2016.7824490}, pages = {902 -- 905}, year = {2016}, language = {en} } @incollection{Streit2016, author = {Streit, Wilfried}, title = {Kalkulation}, series = {Zahlentafeln f{\"u}r den Baubetrieb}, booktitle = {Zahlentafeln f{\"u}r den Baubetrieb}, edition = {9., {\"u}berarb. und aktual. Aufl.}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-02838-1 (Online)}, doi = {10.1007/978-3-658-02838-1_13}, pages = {1391 -- 1501}, year = {2016}, abstract = {Das Kapitel behandelt die Kosten- und Preisermittlung, die Kostenvorgabe und Kostenkontrolle. Der Angebotspreis wird aufgeschl{\"u}sselt in die Einzelkosten der Teilleistungen, die Baustellengemeinkosten, die Allgemeinen Gesch{\"a}ftskosten und einen Zuschlag f{\"u}r Wagnis und Gewinn. Auf der Basis der Angebotskalkulation werden die Vorgaben f{\"u}r die Kostenkontrolle entwickelt.}, language = {de} } @article{GossmannFrotscherLinderetal.2016, author = {Goßmann, Matthias and Frotscher, Ralf and Linder, Peter and Bayer, Robin and Epple, U. and Staat, Manfred and Temiz Artmann, Ayseg{\"u}l and Artmann, Gerhard}, title = {Mechano-pharmacological characterization of cardiomyocytes derived from human induced pluripotent stem cells}, series = {Cellular physiology and biochemistry}, volume = {38}, journal = {Cellular physiology and biochemistry}, number = {3}, publisher = {Karger}, address = {Basel}, issn = {1421-9778 (Online)}, doi = {10.1159/000443124}, pages = {1182 -- 1198}, year = {2016}, abstract = {Background/Aims: Common systems for the quantification of cellular contraction rely on animal-based models, complex experimental setups or indirect approaches. The herein presented CellDrum technology for testing mechanical tension of cellular monolayers and thin tissue constructs has the potential to scale-up mechanical testing towards medium-throughput analyses. Using hiPS-Cardiac Myocytes (hiPS-CMs) it represents a new perspective of drug testing and brings us closer to personalized drug medication. Methods: In the present study, monolayers of self-beating hiPS-CMs were grown on ultra-thin circular silicone membranes and deflect under the weight of the culture medium. Rhythmic contractions of the hiPS-CMs induced variations of the membrane deflection. The recorded contraction-relaxation-cycles were analyzed with respect to their amplitudes, durations, time integrals and frequencies. Besides unstimulated force and tensile stress, we investigated the effects of agonists and antagonists acting on Ca²⁺ channels (S-Bay K8644/verapamil) and Na⁺ channels (veratridine/lidocaine). Results: The measured data and simulations for pharmacologically unstimulated contraction resembled findings in native human heart tissue, while the pharmacological dose-response curves were highly accurate and consistent with reference data. Conclusion: We conclude that the combination of the CellDrum with hiPS-CMs offers a fast, facile and precise system for pharmacological, toxicological studies and offers new preclinical basic research potential.}, language = {en} } @misc{WulfhorstMerseburgTippkoetter2016, author = {Wulfhorst, H. and Merseburg, J. and Tippk{\"o}tter, Nils}, title = {Batteriekomponenten aus nachwachsenden Rohstoffen}, series = {Chemie Ingenieur Technik}, volume = {88}, journal = {Chemie Ingenieur Technik}, number = {9}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {0009-286X}, doi = {10.1002/cite.201650333}, pages = {1234 -- 1235}, year = {2016}, abstract = {In diesem Beitrag geht es um die Integration von Stoffstr{\"o}men einer Lignocellulose-Bioraffinerie in Verfahren zur Batterieherstellung. Pflanzliche Reststoffe aus der Biokraftstoffherstellung wie Lignin sollen zur Herstellung neuer Batteriematerialien verwendet werden. Hierbei wird das Lignin als Matrix f{\"u}r die vorgraphitischen C-haltigen Einlagerungsverbindungen in den Elektroden genutzt. Die Si-C-Komposite werden durch das Einbetten von Si in eine Ligninmatrix mit anschließender Carbonisierung hergestellt. Das Lignin hierf{\"u}r wird durch die sequentielle hydrothermale Vorbehandlung von Buchenholz bei variablen Bedingungen gewonnen und mit Si-Nanopartikel sowie als Referenz ohne Si-Nanopartikel gef{\"a}llt. Die Ergebnisse zeigen, dass die sequenzielle Vorbehandlung h{\"o}here Ausbeuten im Vergleich zum LHW- oder Organosolv-Aufschluss liefert. Um eine Anode herzustellen, wurde das resultierende Si-C-Kompositmaterial carbonisiert, auf einen Stromsammler aufgetragen und elektro-chemisch charakterisiert. Der Einfluss der Vorbehandlungsschritte auf den Herstellungsprozess und die {\"o}konomische Bewertung des untersuchten Bioraffinerie-Prozesses wurde mithilfe eines Stoffstrommodells analysiert.}, language = {de} } @inproceedings{Laack2016, author = {Laack, Walter van}, title = {Schnittstelle Tod: Wo stehen wir nach 40 Jahren NTE-Forschung?}, publisher = {van Laack GmbH}, address = {Aachen}, isbn = {978-3-936624-30-4 (Print-Ausgabe)}, url = {http://nbn-resolving.de/urn:nbn:de:101:1-201603132912}, pages = {92 Seiten}, year = {2016}, language = {de} } @misc{RothTippkoetter2016, author = {Roth, J. and Tippk{\"o}tter, Nils}, title = {New Approach for Enzymatic Hydrolysis of Lignocellulose with Selective Diffusion Separation of the Monosaccharide Products}, series = {Chemie Ingenieur Technik}, volume = {88}, journal = {Chemie Ingenieur Technik}, number = {9}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {0009-286X}, doi = {10.1002/cite.201650301}, pages = {1237}, year = {2016}, abstract = {Enzymatic hydrolysis of lignocellulosic material plays an important role in the classical biorefinery approach. Apart from the pretreatment of the raw material, hydrolysis is the basis for the conversion of the cellulose and hemicellulose fraction into fermentable sugars. After hydrolysis, usually a solid-liquid separation takes place, in order to separate the residual plant material from the sugar-rich fraction, which can be subsequently used in a fermentation step. In order to factor out the separation step, the usage of in alginate immobilized crude cellulose fiber beads (CFBs) were evaluated. Pretreated cellulose fibers are incorporated in an alginate matrix together with the relevant enzymes. In doing so, sugars diffuse trough the alginate matrix, allowing a simplified delivery into the surrounding fluid. This again reduces product inhibition of the glucose on the enzyme catalysts. By means of standardized bead production the hydrolysis in lab scale was possible. First results show that liberation of glucose and xylose is possible, allowing a maximum total sugar yield of 75 \%.}, language = {en} } @misc{CapitainHeringTippkoetter2016, author = {Capitain, C. and Hering, T. and Tippk{\"o}tter, Nils}, title = {Enzymatische Polymerisation von Ligninmodellkomponenten und Organosolv-Lignin mit aromatischen Aminos{\"a}uren}, series = {Chemie Ingenieur Technik}, volume = {88}, journal = {Chemie Ingenieur Technik}, number = {9}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {0009-286X}, doi = {10.1002/cite.201650374}, pages = {1236}, year = {2016}, abstract = {Die stoffliche Nutzung von Lignin aus Bioraffinerien ist ein wichtiger Bestandteil f{\"u}r den Wertsch{\"o}pfungsprozess von nachwachsenden, pflanzlichen Rohstoffen. Lignin z{\"a}hlt zu den wenigen erneuerbaren Quellen f{\"u}r phenolische Bestandteile, wird aber derzeit meist nur thermisch verwertet. Ziel dieses Forschungsvorhabens ist die Funktionalisierung von Lignin zur Verbesserung der Adh{\"a}sionseigenschaften. Als funktionelle Gruppe wird die aromatische Aminos{\"a}ure L-DOPA verwendet, die charakteristisch f{\"u}r die Adh{\"a}sionskraft von Muscheln ist. Lignin ist ein geeignetes St{\"u}tzger{\"u}st, da es ein Polymer ist, das durch enzymkatalysierte Polymerisation gebildet wird. Essenziell f{\"u}r die Entwicklung ist ein besseres Verst{\"a}ndnis {\"u}ber die Bildung von Lignin-Polymeren und deren verschiedene Eigenschaften. Um die Einflussfaktoren auf Kettenl{\"a}nge und Polymerisationseffizienz zu untersuchen, werden zurzeit sowohl Ligninmodellkomponenten (LMK) als auch gel{\"o}stes Organosolv-Lignin verwendet. Laufende Untersuchungen werden zeigen, ob sich die enzymatische Polymerisationsreaktion auf ein gel{\"o}stes Ligninpolymer aus einem Organosolv-Aufschluss {\"u}bertragen l{\"a}sst.}, language = {de} }