41,768 Works

Fast speaker independent large vocabulary continuous speech recognition [online]

Monika Woszczyna
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Influence of Al₂O₃ Nanoparticle Addition on a UV Cured Polyacrylate for 3D Inkjet Printing

Dennis Graf, Sven Burchard, Julian Crespo, Christof Megnin, Sebastian Gutsch, Margit Zacharias & Thomas Hanemann
The brittleness of acrylic photopolymers, frequently used in 3D Inkjet printing, limits their utilization in structural applications. In this study, a process was developed for the production and characterization of an alumina-enhanced nanocomposite with improved mechanical properties for Inkjet printing. Ceramic nanoparticles with an average primary particle size (APPS) of 16 nm and 31 nm, which was assessed via high-resolution scanning electron microscopy (HRSEM), were functionalized with 3.43 and 5.59 mg/m2 3-(trimethoxysilyl)propyl methacrylate (MPS), respectively,...
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Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos and b quarks at $ \sqrt{s}=13 $ TeV

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi, E. Asilar, T. Bergauer, J. Brandstetter, E. Brondolin, M. Dragicevic, J. Erö, A. Escalante Del Valle, M. Flechl, R. Frühwirth, V. M. Ghete, J. Hrubec, M. Jeitler, N. Krammer, I. Krätschmer, D. Liko, T. Madlener, I. Mikulec, N. Rad, H. Rohringer, J. Schieck, R. Schöfbeck … & N. Woods
A search for heavy resonances, decaying into the standard model vector bosons and the standard model Higgs boson, is presented. The final states considered contain a b quark-antiquark pair from the decay of the Higgs boson, along with electrons and muons and missing transverse momentum, due to undetected neutrinos, from the decay of the vector bosons. The mass spectra are used to search for a localized excess consistent with a resonant particle. The data sample...
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09: Erweiterte Verfahren des Reinforcement Learning: Maschinelles Lernen 1 - Grundverfahren, Vorlesung, WS 2019/20, 13.12.2019

Prof. Dr.-Ing. Johann Marius Zöllner
Erweiterte Verfahren des Reinforcement Learning
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Cyclic Voltammetry Characterization of Au, Pd, and AuPd Nanoparticles Supported on Different Carbon Nanofibers

Anna Testolin, Stefano Cattaneo, Wu Wang, Di Wang, Valentina Pifferi, Laura Prati, Luigi Falciola & Alberto Villa
Three types of carbon nanofibers (pyrolytically stripped carbon nanofibers (PS), low-temperature heat treated carbon nanofibers (LHT), and high-temperature heat treated carbon nanofibers (HHT)) with different graphitization degrees and surface chemistry have been used as support for Au, Pd, or bimetallic AuPd alloy nanoparticles (NPs). The carbon supports have been characterized using Raman, X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV). Moreover, the morphology of the metal nanoparticles was investigated using transmission electron microscopy (TEM) and...
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Improved Tensile Ductility by Severe Plastic Deformation for Nano-Structured Metallic Glass

Yue Dong, Suya Liu, Johannes Biskupek, Qingping Cao, Xiaodong Wang, Jian-Zhong Jiang, Rainer Wunderlich & Hans-Jörg Fecht
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Microstrain and electrochemical performance of garnet solid electrolyte integrated in a hybrid battery cell

M. Botros, T. Scherer, R. Popescu, A. Kilmametov, O. Clemens & H. Hahn
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Multi-anionic and -cationic compounds: new high entropy materials for advanced Li-ion batteries

Qingsong Wang, Abhishek Sarkar, Di Wang, Leonardo Velasco, Raheleh Azmi, Subramshu S. Bhattacharya, Thomas Bergfeldt, Andre Düvel, Paul Heitjans, Torsten Brezesinski, Horst Hahn & Ben Breitung
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One step: In situ synthesis of ZnS/N and S co-doped carbon composites via salt templating for lithium-ion battery applications

Sadaf Ikram, Marcus Müller, Sonia Dsoke, Usman A. Rana, Angelina Sarapulova, Werner Bauer, H. M. Siddiqi & D. V. Szabó
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Silicon nanoparticles with a polymer-derived carbon shell for improved lithium-ion batteries: Investigation into volume expansion, gas evolution, and particle fracture

A. Schiele, B. Breitung, A. Mazilkin, S. Schweidler, J. Janek, S. Gumbel, S. Fleischmann, E. Burakowska-Meise, H. Sommer & T. Brezesinski
Silicon (Si) and composites thereof, preferably with carbon (C), show favorable lithium (Li) storage properties at low potential, and thus hold promise for application as anode active materials in the energy storage area. However, the high theoretical specific capacity of Si afforded by the alloying reaction with Li involves many challenges. In this article, we report the preparation of small-size Si particles with a turbostratic carbon shell from a polymer precoated powder material. Galvanostatic charge/discharge...
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Concurrent Dynamic Quotient Filters: Packing Fingerprints into Atomics

Robert Williger
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Engineering Faster Sorters for Small Sets of Elements

Jasper Marianczuk
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Investigations on the Experimental Identification of AC-Copper Losses in Permanent Magnet Synchronous Machines using a Motor Sub-Assembly

Christoph Rollbühler, Sebastian Peukert, Daniel Fritz, Jean-Francois Heyd, Johannes Kolb & Martin Doppelbauer
Analysis of AC copper losses in electrical machines is still a challenging task. Due to high utilization of high power density automotive drives, stray fields in the slots cause a significant copper loss increase compared to DC copper losses. Especially at large cross-sectional areas of the wires up to several times the DC-losses may occur in copper. This paper presents a new method of identifying these additional copper losses in electrical machines directly through measurement...
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High-Entropy Oxides: Fundamental Aspects and Electrochemical Properties

Abhishek Sarkar, Qingsong Wang, Alexander Schiele, Mohammed Reda Chellali, Subramshu S. Bhattacharya, Di Wang, Torsten Brezesinski, Horst Hahn, Leonardo Velasco & Ben Breitung
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Understanding the Li-ion storage mechanism in a carbon composited zinc sulfide electrode

Guiying Tian, Zijian Zhao, Angelina Sarapulova, Chittaranjan Das, Lihua Zhu, Suya Liu, Aleksandr Missiul, Edmund Welter, Julia Maibach & Sonia Dsoke
Sulfide compounds are interesting conversion electrode materials for Li-ion batteries, due to their high theoretical capacity. However, they suffer from large volumetric changes and fast capacity fading. To overcome these issues, nanosized zinc sulfide (ZnS) modified with polyelectrolytes and graphene (ZnS-C/G) has been synthesized and investigated as an enhanced conversion-alloying anode material. In situ synchrotron X-ray diffraction and X-ray absorption spectroscopy are used to elucidate the Li storage process during the 1st cycle. In addition,...
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(De)Lithiation Mechanism of Hierarchically Layered LiNi$_{1/3}$Co$_{1/3}$Mn$_{1/3}$O$_{2}$ Cathodes during High-Voltage Cycling

Weibo Hua, Björn Schwarz, Michael Knapp, Anatoliy Senyshyn, Alkesandr Missiul, Xiaoke Mu, Suning Wang, Christian Kübel, Joachim R. Binder, Sylvio Indris & Helmut Ehrenberg
In view of the requirements for high-energy lithium ion batteries (LIBs), hierarchically layered LiNi1/3Co1/3Mn1/3O2 (NCM111) cathode materials have been prepared using a hydroxide coprecipitation method and subsequent high-temperature solid-state reaction. The diffraction results show that the synthesized NCM111 has a well-defined layered hexagonal structure. The initial specific discharge capacity of a Li/NCM111 cell is 204.5 mAh g−1 at a current density of 28 mA g−1 between 2.7 and 4.8 V. However, the cell suffers from...
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Hierarchical MoS 2-carbon porous nanorods towards atomic interfacial engineering for high-performance lithium storage

Zhenyou Li, Alexander Ottmann, Qing Sun, Anne K. Kast, Kai Wang, Ting Zhang, Hans-Peter Meyer, Claudia Backes, Christian Kübel, Rasmus R. Schröder, Junhui Xiang, Yana Vaynzof & Rüdiger Klingeler
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Societal breakdown as an emergent property of large-scale behavioural models of land use change

Calum Brown, Bumsuk Seo & Mark Rounsevell
Human land use has placed enormous pressure on natural resources and ecosystems worldwide and may even prompt socio-ecological collapses under some circumstances. Efforts to avoid such collapses are hampered by a lack of knowledge about when they may occur and how they may be prevented. Computational models that illuminate potential future developments in the land system are invaluable tools in this context. While such models are widely used to project biophysical changes, they are currently...
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11: Technische Mechanik III, Vorlesung, WS 2019/20, 09.12.2019

Prof. Dr.-Ing. Wolfgang Seemann
Kapitel Vorlesung 11 0:08:30 3 - Bewegung eines starren Körpers in der Ebene 0:16:00 3.1 - Kinematik 3.1.1 - Reine Translation 0:27:20 3.1.2 - Drehung um raumfeste Achse 0:39:25 3.1.3 - Allgemeine ebene Bewegung 1:19:53 3.1.4 - Momentanpol Vorlesungsinhalte: - Kinematik: kartesische, zylindrische und natürliche Koordinaten, Ableitungen in verschiedenen Bezugssystemen, Winkelgeschwindigkeiten. - Kinetik des Massenpunktes: Newtonsches Grundgesetz, Prinzip von d'Alembert, Arbeit, kinetische Energie, Potential und Energie, Impuls- und Drallsatz, Relativmechanik. - Systeme von Massenpunkten: Schwerpunktsatz,...
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Top-quark physics at the CLIC electron-positron linear collider

H. Abramowicz, N. Alipour Tehrani, D. Arominski, Y. Benhammou, M. Benoit, J.-J. Blaising, M. Boronat, O. Borysov, R. R. Bosley, I. Božović Jelisavčić, I. Boyko, S. Brass, E. Brondolin, P. Bruckman De Renstrom, M. Buckland, P. N. Burrows, M. Chefdeville, S. Chekanov, T. Coates, D. Dannheim, M. Demarteau, H. Denizli, G. Durieux, G. Eigen, K. Elsener … & A. Zhemchugov
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TCCON and NDACC X$_{CO}$ measurements: difference, discussion and application

Minqiang Zhou, Bavo Langerock, Corinne Vigouroux, Mahesh Kumar Sha, Christian Hermans, Jean-Marc Metzger, Huilin Chen, Michel Ramonet, Rigel Kivi, Pauli Heikkinen, Dan Smale, David F. Pollard, Nicholas Jones, Voltaire A. Velazco, Omaira E. García, Matthias Schneider, Mathias Palm, Thorsten Warneke & Martine De Mazière
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A novel role for the tumour suppressor Nitrilase1 modulating the Wnt/β-catenin signalling pathway

Sonnhild Mittag, Tomas Valenta, Jörg Weiske, Laura Bloch, Susanne Klingel, Dietmar Gradl, Franziska Wetzel, Yuan Chen, Iver Petersen, Konrad Basler & Otmar Huber
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