TY  - JOUR
A1  - Malik, A. M.
A1  - Abdieva, G. Zh.
A1  - Ualieva, P. S.
A1  - Zhubanova, A. A.
A1  - Temiz Artmann, Aysegül
T1  - CКPИНИНГ МИКPOOPГAНИЗМOВ-ДECТPУКТOPOВ XЛOРOPГAНИЧECКИX ЗAГPЯЗНИТEЛEЙ
T1  - Screening of microorganisms – destructors of chlororganic pollutants
JF  - Eurasian Journal of Ecology
Y1  - 2019
SN  - 2617-7358
VL  - 61
IS  - 4
SP  - 61
EP  - 71
ER  - 
TY  - JOUR
A1  - Schmidt, Aaron C.
A1  - Turgut, Hatice
A1  - Le, Dao
A1  - Beloqui, Ana
A1  - Delaittre, Guillaume
T1  - Making the best of it: nitroxide-mediated polymerization of methacrylates via the copolymerization approach with functional styrenics
JF  - Polymer Chemistry
N2  - The SG1-mediated solution polymerization of methyl methacrylate (MMA) and oligo(ethylene glycol) methacrylate (OEGMA, Mₙ = 300 g mol⁻¹) in the presence of a small amount of functional/reactive styrenic comonomer is investigated. Moieties such as pentafluorophenyl ester, triphenylphosphine, azide, pentafluorophenyl, halide, and pyridine are considered. A comonomer fraction as low as 5 mol% typically results in a controlled/living behavior, at least up to 50% conversion. Chain extensions with styrene for both systems were successfully performed. Variation of physical properties such as refractive index (for MMA) and phase transition temperature (for OEGMA) were evaluated by comparing to 100% pure homopolymers. The introduction of an activated ester styrene derivative in the polymerization of OEGMA allows for the synthesis of reactive and hydrophilic polymer brushes with defined thickness. Finally, using the example of pentafluorostyrene as controlling comonomer, it is demonstrated that functional PMMA-b-PS are able to maintain a phase separation ability, as evidenced by the formation of nanostructured thin films.
Y1  - 2020
U6  - https://doi.org/10.1039/C9PY01458F
VL  - 11
IS  - 2
SP  - 593
EP  - 604
PB  - Royal Society of Chemistry (RSC)
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Kroll-Ludwigs, Kathrin
T1  - Vernachlässigung des unionsrechtlichen Anerkennungsprinzips durch den BGH
JF  - NJW Neue Juristische Wochenschrift
Y1  - 2019
SN  - 0341-1915
IS  - 32
SP  - 2277
EP  - 2279
PB  - Beck
CY  - München
ER  - 
TY  - JOUR
A1  - Roeth, A.A.
A1  - Slabu, I.
A1  - Kessler, A.
A1  - Engelmann, Ulrich M.
T1  - Local treatment of pancreatic cancer with magnetic nanoparticles
JF  - HPB
Y1  - 2019
U6  - https://doi.org/10.1016/j.hpb.2019.10.959
SN  - 1365-182X
VL  - 21
IS  - Supplement 3
SP  - S868
EP  - S869
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Wilbring, Daniela
A1  - Enning, Manfred
A1  - Pfaff, Raphael
A1  - Schmidt, Bernd
T1  - Neue Perspektiven für die Bahn in der Produktions- und Distributionslogistik durch Prozessautomation
JF  - ETR - Eisenbahntechnische Rundschau
Y1  - 2020
SN  - 0013-2845
VL  - 69
IS  - 3
SP  - 15
EP  - 19
ER  - 
TY  - JOUR
A1  - Welden, Rene
A1  - Schöning, Michael Josef
A1  - Wagner, Patrick H.
A1  - Wagner, Torsten
T1  - Light-Addressable Electrodes for Dynamic and Flexible Addressing of Biological Systems and Electrochemical Reactions
JF  - Sensors
N2  - In this review article, we are going to present an overview on possible applications of light-addressable electrodes (LAE) as actuator/manipulation devices besides classical electrode structures. For LAEs, the electrode material consists of a semiconductor. Illumination with a light source with the appropiate wavelength leads to the generation of electron-hole pairs which can be utilized for further photoelectrochemical reaction. Due to recent progress in light-projection technologies, highly dynamic and flexible illumination patterns can be generated, opening new possibilities for light-addressable electrodes. A short introduction on semiconductor–electrolyte interfaces with light stimulation is given together with electrode-design approaches. Towards applications, the stimulation of cells with different electrode materials and fabrication designs is explained, followed by analyte-manipulation strategies and spatially resolved photoelectrochemical deposition of different material types.
Y1  - 2020
U6  - https://doi.org/10.3390/s20061680
SN  - 1424-8220
VL  - 20
IS  - 6
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Kerres, Karsten
A1  - Gredigk-Hoffmann, Sylvia
A1  - Jathe, Rüdiger
A1  - Orlik, Stefan
A1  - Sariyildiz, Mustafa
A1  - Schmidt, Torsten
A1  - Sympher, Klaus-Jochen
A1  - Uhlenbroch, Adrian
T1  - Future approaches for sewer system condition assessment
JF  - Water Practice & Technology
N2  - Different analytical approaches exist to describe the structural substance or wear reserve of sewer systems. The aim is to convert engineering assessments of often complex defect patterns into computational algorithms and determine a substance class for a sewer section or manhole. This analytically determined information is essential for strategic rehabilitation planning processes up to network level, as it corresponds to the most appropriate rehabilitation type and can thus provide decision-making support. Current calculation methods differ clearly from each other in parts, so that substance classes determined by the different approaches are only partially comparable with each other. The objective of the German R&D cooperation project ‘SubKanS’ is to develop a methodology for classifying the specific defect patterns resulting from the interaction of all the individual defects, and their severities and locations. The methodology takes into account the structural substance of sewer sections and manholes, based on real data and theoretical considerations analogous to the condition classification of individual defects. The result is a catalogue of defect patterns and characteristics, as well as associated structural substance classifications of sewer systems (substance classes). The methodology for sewer system substance classification is developed so that the classification of individual defects can be transferred into a substance class of the sewer section or manhole, eventually taking into account further information (e.g. pipe material, nominal diameter, etc.). The result is a validated methodology for automated sewer system substance classification.
Y1  - 2020
U6  - https://doi.org/10.2166/wpt.2020.027
SN  - 1751-231X
IS  - 15 (2)
SP  - 386
EP  - 393
PB  - IWA Publishing
CY  - London
ER  - 
TY  - JOUR
A1  - Köhler, Klemens
T1  - A conflict theory perspective of IT attacks – consequences for IT security education
N2  - Cyberspace is "the environment formed by physical and non-physical components to store, modify, and exchange data using computer networks" (NATO CCDCOE). Beyond that, it is an environment where people interact. IT attacks are hostile, non-cooperative interactions that can be described with conflict theory. Applying conflict theory to IT security leads to different objectives for end-user education, requiring different formats like agency-based competence developing games.
Y1  - 2020
IS  - Preprint
ER  - 
TY  - JOUR
A1  - Jildeh, Zaid B.
A1  - Kirchner, Patrick
A1  - Oberländer, Jan
A1  - Vahidpour, Farnoosh
A1  - Wagner, Patrick H.
A1  - Schöning, Michael Josef
T1  - Development of a package-sterilization process for aseptic filling machines: A numerical approach and validation for surface treatment with hydrogen peroxide
JF  - Sensor and Actuators A: Physical
N2  - Within the present work a sterilization process by a heated gas mixture that contains hydrogen peroxide (H₂O₂) is validated by experiments and numerical modeling techniques. The operational parameters that affect the sterilization efficacy are described alongside the two modes of sterilization: gaseous and condensed H₂O₂. Measurements with a previously developed H₂O₂ gas sensor are carried out to validate the applied H₂O₂ gas concentration during sterilization. We performed microbiological tests at different H₂O₂ gas concentrations by applying an end-point method to carrier strips, which contain different inoculation loads of Geobacillus stearothermophilus spores. The analysis of the sterilization process of a pharmaceutical glass vial is performed by numerical modeling. The numerical model combines heat- and advection-diffusion mass transfer with vapor–pressure equations to predict the location of condensate formation and the concentration of H₂O₂ at the packaging surfaces by changing the gas temperature. For a sterilization process of 0.7 s, a H₂O₂ gas concentration above 4% v/v is required to reach a log-count reduction above six. The numerical results showed the location of H₂O₂ condensate formation, which decreases with increasing sterilant-gas temperature. The model can be transferred to different gas nozzle- and packaging geometries to assure the absence of H₂O₂ residues.
Y1  - 2020
U6  - https://doi.org/10.1016/j.sna.2019.111691
SN  - 0924-4247
VL  - 303
IS  - 111691
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Attar, Mandana Hossein Zadeh
A1  - Merk, Hans F.
A1  - Kotliar, Konstantin
A1  - Wurpts, Gerda
A1  - Röseler, Stefani
A1  - Moll-Slodowy, Silke
A1  - Plange, Johann
A1  - Baron, Jens Malte
A1  - Balakirski, Galina
T1  - The CD63 basophil activation test as a diagnostic tool for assessing autoimmunity in patients with chronic spontaneous urticaria
JF  - European Journal of Dermatology
Y1  - 2019
U6  - https://doi.org/10.1684/ejd.2019.3680
VL  - 29
IS  - 6
SP  - 614
EP  - 618
ER  - 
TY  - JOUR
A1  - Cosma, Cosmin
A1  - Kessler, Julia
A1  - Gebhardt, Andreas
A1  - Campbell, Ian
A1  - Balc, Nicolae
T1  - Improving the Mechanical Strength of Dental Applications and Lattice Structures SLM Processed
JF  - Materials
N2  - To manufacture custom medical parts or scaffolds with reduced defects and high mechanical characteristics, new research on optimizing the selective laser melting (SLM) parameters are needed. In this work, a biocompatible powder, 316L stainless steel, is characterized to understand the particle size, distribution, shape and flowability. Examination revealed that the 316L particles are smooth, nearly spherical, their mean diameter is 39.09 μm and just 10% of them hold a diameter less than 21.18 μm. SLM parameters under consideration include laser power up to 200 W, 250–1500 mm/s scanning speed, 80 μm hatch spacing, 35 μm layer thickness and a preheated platform. The effect of these on processability is evaluated. More than 100 samples are SLM-manufactured with different process parameters. The tensile results show that is possible to raise the ultimate tensile strength up to 840 MPa, adapting the SLM parameters for a stable processability, avoiding the technological defects caused by residual stress. Correlating with other recent studies on SLM technology, the tensile strength is 20% improved. To validate the SLM parameters and conditions established, complex bioengineering applications such as dental bridges and macro-porous grafts are SLM-processed, demonstrating the potential to manufacture medical products with increased mechanical resistance made of 316L.
Y1  - 2020
U6  - https://doi.org/10.3390/ma13040905
SN  - 1996-1944
VL  - 13
IS  - 4
SP  - 1
EP  - 18
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Pietsch, Wolfram
T1  - Augmenting voice of the customer analysis by analysis of belief
JF  - QFD-Forum
Y1  - 2015
SN  - 1431-6951
IS  - 30
SP  - 1
EP  - 5
ER  - 
TY  - JOUR
A1  - Mennicken, Max
A1  - Peter, Sophia K.
A1  - Kaulen, Corinna
A1  - Simon, Ulrich
A1  - Karthäuser, Silvia
T1  - Transport through Redox-Active Ru-Terpyridine Complexes Integrated in Single Nanoparticle Devices
JF  - The Journal of Physical Chemistry C
N2  - Transition metal complexes are electrofunctional molecules due to their high conductivity and their intrinsic switching ability involving a metal-to-ligand charge transfer. Here, a method is presented to contact reliably a few to single redox-active Ru-terpyridine complexes in a CMOS compatible nanodevice and preserve their electrical functionality. Using hybrid materials from 14 nm gold nanoparticles (AuNP) and bis-{4′-[4-(mercaptophenyl)-2,2′:6′,2″-terpyridine]}-ruthenium(II) complexes a device size of 30² nm² inclusive nanoelectrodes is achieved. Moreover, this method bears the opportunity for further downscaling. The Ru-complex AuNP devices show symmetric and asymmetric current versus voltage curves with a hysteretic characteristic in two well separated conductance ranges. By theoretical approximations based on the single-channel Landauer model, the charge transport through the formed double-barrier tunnel junction is thoroughly analyzed and its sensibility to the molecule/metal contact is revealed. It can be verified that tunneling transport through the HOMO is the main transport mechanism while decoherent hopping transport is present to a minor extent.
Y1  - 2020
U6  - https://doi.org/10.1021/acs.jpcc.9b11716
SN  - 1932-7455
VL  - 124
IS  - 8
SP  - 4881
EP  - 4889
PB  - ACS Publications
CY  - Washington, DC
ER  - 
TY  - JOUR
A1  - Pilas, Johanna
A1  - Selmer, Thorsten
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Screen-printed carbon electrodes modified with graphene oxide for the design of a reagent-free NAD+-dependent biosensor array
JF  - Analytical Chemistry
Y1  - 2019
U6  - https://doi.org/10.1021/acs.analchem.9b04481
VL  - 91
IS  - 23
SP  - 15293
EP  - 15299
PB  - ACS Publications
CY  - Washington
ER  - 
TY  - JOUR
A1  - Wardoyo, Arinto Y.P.
A1  - Noor, Johan A.E.
A1  - Elbers, Gereon
A1  - Schmitz, Sandra
A1  - Flaig, Sascha T.
A1  - Budianto, Arif
T1  - Characterizing volcanic ash elements from the 2015 eruptions of bromo and raung volcanoes, Indonesia
JF  - Polish Journal of Environmental Studies
N2  - The volcanic eruptions of Mt. Bromo and Mt. Raung in East Java, Indonesia, in 2015 perturbed volcanic materials and affected surface-layer air quality at surrounding locations. During the episodes, the volcanic ash from the eruptions influenced visibility, traffic accidents, flight schedules, and human health. In this research, the volcanic ash particles were collected and characterized by relying on the detail of physical observation. We performed an assessment of the volcanic ash elements to characterize the volcanic ash using two different methods which are aqua regia extracts followed by MP-AES and XRF laboratory test of bulk samples. The analysis results showed that the volcanic ash was mixed of many materials, such as Al, Si, P, K, Ca, Ti, V, Cr, Mn, Fe, Ni, and others. Fe, Si, Ca, and Al were found as the major elements, while the others were the trace elements Ba, Cr, Cu, Mn, P, Mn, Ni, Zn, Sb, Sr, and V with the minor concentrations. XRF analyses showed that Fe dominated the elements of the volcanic ash. The XRF analysis showed that Fe was at 35.40% in Bromo and 43.00% in Raung of the detected elements in bulk material. The results of aqua regia extracts analyzed by MP-AES were 1.80% and 1.70% of Fe element for Bromo and Raung volcanoes, respectively.
Y1  - 2020
U6  - https://doi.org/10.15244/pjoes/99101
SN  - 2083-5906
VL  - 29
IS  - 2
SP  - 1899
EP  - 1907
PB  - HARD
CY  - Olsztyn
ER  - 
TY  - JOUR
A1  - Khayyam, Hamid
A1  - Jamali, Ali
A1  - Bab-Hadiashar, Alireza
A1  - Esch, Thomas
A1  - Ramakrishna, Seeram
A1  - Jalil, Mahdi
A1  - Naebe, Minoo
T1  - A Novel Hybrid Machine Learning Algorithm for Limited and Big Data Modelling with Application in Industry 4.0
JF  - IEEE Access
N2  - To meet the challenges of manufacturing smart products, the manufacturing plants have been radically changed to become smart factories underpinned by industry 4.0 technologies. The transformation is assisted by employment of machine learning techniques that can deal with modeling both big or limited data. This manuscript reviews these concepts and present a case study that demonstrates the use of a novel intelligent hybrid algorithms for Industry 4.0 applications with limited data. In particular, an intelligent algorithm is proposed for robust data modeling of nonlinear systems based on input-output data. In our approach, a novel hybrid data-driven combining the Group-Method of Data-Handling and Singular-Value Decomposition is adapted to find an offline deterministic model combined with Pareto multi-objective optimization to overcome the overfitting issue. An Unscented-Kalman-Filter is also incorporated to update the coefficient of the deterministic model and increase its robustness against data uncertainties. The effectiveness of the proposed method is examined on a set of real industrial measurements.
Y1  - 2020
SN  - 2169-3536
U6  - https://doi.org/10.1109/ACCESS.2020.2999898
SP  - 1
EP  - 12
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Hailer, Benjamin
A1  - Weber, Tobias
A1  - Neveling, Sebastian
A1  - Dera, Samuel
A1  - Arent, Jan-Christoph
A1  - Middendorf, Peter
T1  - Development of a test device to determine the frictional behavior between honeycomb and prepreg layers under realistic manufacturing conditions
JF  - Journal of Sandwich Structures & Materials
N2  - In the friction tests between honeycomb with film adhesive and prepreg, the relative displacement occurs between the film adhesive and the prepreg. The film adhesive does not shift relative to the honeycomb. This is consistent with the core crush behavior where the honeycomb moves together with the film adhesive, as can be seen in Figure 2(a). The pull-through forces of the friction measurements between honeycomb and prepreg at 1 mm deformation are plotted in Figure 17(a). While the friction at 100°C is similar to the friction at 120°C, it decreases significantly at 130°C and exhibits a minimum at 140°C. At 150°C, the friction rises again slightly and then sharply at 160°C. Since the viscosity of the M18/1 prepreg resin drops significantly before it cures [23], the minimum friction at 140°C could result from a minimum viscosity of the mixture of prepreg resin and film adhesive before the bond subsequently cures. Figure 17(b) shows the mean value curve of the friction measurements at 140°C. The error bars, which represent the standard deviation, reveal the good repeatability of the tests. The force curve is approximately horizontal between 1 mm and 2 mm. The friction then slightly rises. As with interlaminar friction measurements, this could be due to the fact that resin is removed by friction and the proportion of boundary lubrication increases. Figure 18 shows the surfaces after the friction measurement. The honeycomb cell walls are clearly visible in the film adhesive. There are areas where the film adhesive is completely removed and the carrier material of the film adhesive becomes visible. In addition, the viscosity of the resin changes as the curing progresses during the friction test. This can also affect the force-displacement curve.
Y1  - 2020
U6  - https://doi.org/10.1177/1099636220923986
SN  - 1530-7972
IS  - Volume 23, Issue 7
SP  - 3017
EP  - 3043
PB  - Sage
CY  - London
ER  - 
TY  - JOUR
A1  - Leise, Philipp
A1  - Eßer, Arved
A1  - Eichenlaub, Tobias
A1  - Schleiffer, Jean-Eric
A1  - Altherr, Lena
A1  - Rinderknecht, Stephan
A1  - Pelz, Peter F.
T1  - Sustainable system design of electric powertrains - comparison of optimization methods
JF  - Engineering Optimization
N2  - The transition within transportation towards battery electric vehicles can lead to a more sustainable future. To account for the development goal ‘climate action’ stated by the United Nations, it is mandatory, within the conceptual design phase, to derive energy-efficient system designs. One barrier is the uncertainty of the driving behaviour within the usage phase. This uncertainty is often addressed by using a stochastic synthesis process to derive representative driving cycles and by using cycle-based optimization. To deal with this uncertainty, a new approach based on a stochastic optimization program is presented. This leads to an optimization model that is solved with an exact solver. It is compared to a system design approach based on driving cycles and a genetic algorithm solver. Both approaches are applied to find efficient electric powertrains with fixed-speed and multi-speed transmissions. Hence, the similarities, differences and respective advantages of each optimization procedure are discussed.
KW  - Powertrain
KW  - stochastic optimization
KW  - global optimization
KW  - genetic algorithm
Y1  - 2021
U6  - https://doi.org/10.1080/0305215X.2021.1928660
SN  - 0305-215X
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - JOUR
A1  - Grundlach, Michael
A1  - Baumann, Martin
A1  - Engelmann, Ulrich M.
ED  - Dössel, Olaf
T1  - How Multimodal Examinations Can Increase Sustainable Student Gain by Aligning Teaching and Assessment
JF  - Current Directions in Biomedical Engineering
N2  - Modern industry and multi-discipline projects require highly trained individuals with resilient science and engineering back-grounds. Graduates must be able to agilely apply excellent theoretical knowledge in their subject matter as well as essential practical “hands-on” knowledge of diverse working processes to solve complex problems. To meet these demands, university education follows the concept of Constructive Alignment and thus increasingly adopts the teaching of necessary practical skills to the actual industry requirements and assessment routines. However, a systematic approach to coherently align these three central teaching demands is strangely absent from current university curricula. We demonstrate the feasibility of implementing practical assessments in a regular theory-based examination, thus defining the term “blended assessment”. We assessed a course for natural science and engineering students pursuing a career in biomedical engineering, and evaluated the benefit of blended assessment exams for students and lecturers. Our controlled study assessed the physiological background of electrocardiograms (ECGs), the practical measurement of ECG curves, and their interpretation of basic pathologic alterations. To study on long time effects, students have been assessed on the topic twice with a time lag of 6 months. Our findings suggest a significant improvement in student gain with respect to practical skills and theoretical knowledge. The results of the reassessments support these outcomes. From the lecturers ́ point of view, blended assessment complements practical training courses while keeping organizational effort manageable. We consider blended assessment a viable tool for providing an improved student gain, industry-ready education format that should be evaluated and established further to prepare university graduates optimally for their future careers.
KW  - constructive alignment
KW  - examination
KW  - long-term retention
KW  - multimodal
KW  - practical learning
Y1  - 2021
SN  - 2364-5504
U6  - https://doi.org/10.1515/cdbme-2021-2019
VL  - 7
IS  - 7/2
SP  - 73
EP  - 76
PB  - De Gruyter
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Altherr, Lena
A1  - Ederer, Thorsten
A1  - Lorenz, Ulf
A1  - Pelz, Peter F.
A1  - Pöttgen, Philipp
ED  - Lübbecke, Marco
ED  - Koster, Arie
ED  - Letmathe, Peter
ED  - Madlener, Reihard
ED  - Peis, Britta
ED  - Walther, Grit
T1  - Experimental validation of an enhanced system synthesis approach
JF  - Operations Research Proceedings 2014
N2  - Planning the layout and operation of a technical system is a common task
for an engineer. Typically, the workflow is divided into consecutive stages: First,
the engineer designs the layout of the system, with the help of his experience or of
heuristic methods. Secondly, he finds a control strategy which is often optimized
by simulation. This usually results in a good operating of an unquestioned sys-
tem topology. In contrast, we apply Operations Research (OR) methods to find a
cost-optimal solution for both stages simultaneously via mixed integer program-
ming (MILP). Technical Operations Research (TOR) allows one to find a provable
global optimal solution within the model formulation. However, the modeling error
due to the abstraction of physical reality remains unknown. We address this ubiq-
uitous problem of OR methods by comparing our computational results with mea-
surements in a test rig. For a practical test case we compute a topology and control
strategy via MILP and verify that the objectives are met up to a deviation of 8.7%.
Y1  - 2014
SN  - 978-3-319-28695-2
U6  - https://doi.org/10.1007/978-3-319-28697-6_1
PB  - Springer
CY  - Basel
ER  -