@article{41151,
  author       = {{Decius, Julian and Schaper, Niclas and Seifert, Andreas}},
  journal      = {{Human Resource Development Quarterly}},
  number       = {{4}},
  pages        = {{495--535}},
  title        = {{{Informal Workplace Learning: Development and validation of a measure.}}},
  volume       = {{30}},
  year         = {{2019}},
}

@article{41153,
  author       = {{Teuber, Ziwen and Möer, Johanna and Webel, Luise and Seifert, Andreas}},
  issn         = {{1861-6755}},
  journal      = {{Prävention und Gesundheitsförderung}},
  keywords     = {{Public Health, Environmental and Occupational Health}},
  number       = {{3}},
  pages        = {{269--274}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Burnout und Engagement: Eine Pilotstudie zum Transfer des Job-Demands-Resources-Modells in den deutschen Schulkontext}}},
  doi          = {{10.1007/s11553-019-00752-1}},
  volume       = {{15}},
  year         = {{2019}},
}

@article{25907,
  abstract     = {{<jats:p>The combined benefits of moisture-stable phosphonic acids and mesoporous silica materials (SBA-15 and MCM-41) as large-surface-area solid supports offer new opportunities for several applications, such as catalysis or drug delivery. We present a comprehensive study of a straightforward synthesis method via direct immobilization of several phosphonic acids and phosphoric acid esters on various mesoporous silicas in a Dean–Stark apparatus with toluene as the solvent. Due to the utilization of azeotropic distillation, there was no need to dry phosphonic acids, phosphoric acid esters, solvents, or silicas prior to synthesis. In addition to modeling phosphonic acids, immobilization of the important biomolecule adenosine monophosphate (AMP) on the porous supports was also investigated. Due to the high surface area of the mesoporous silicas, a possible catalytic application based on immobilization of an organocatalyst for an asymmetric aldol reaction is discussed.</jats:p>}},
  author       = {{Weinberger, Christian and Heckel, Tatjana and Schnippering, Patrick and Schmitz, Markus and Guo, Anpeng and Keil, Waldemar and Marsmann, Heinrich C. and Schmidt, Claudia and Tiemann, Michael and Wilhelm, René}},
  issn         = {{2079-4991}},
  journal      = {{Nanomaterials}},
  title        = {{{Straightforward Immobilization of Phosphonic Acids and Phosphoric Acid Esters on Mesoporous Silica and Their Application in an Asymmetric Aldol Reaction}}},
  doi          = {{10.3390/nano9020249}},
  year         = {{2019}},
}

@article{25904,
  abstract     = {{We examined the effect of CaCl2 and LiCl on ice melting in mesoporous silica (MCM-41 and SBA-15 silica). For that purpose, we determined the ice melting temperature in pores of various size (pore radii between 1.9 and 11.1 nm) in water and aqueous solutions up to high total solute molality (up to about 12 mol kg–1) using differential scanning calorimetry. We found that both electrolytes reduce the ice melting temperature within the pores. An exception is the melting of ice in the smallest pores, which does not seem to be affected by the presence of solutes, most likely owing to an exclusion of the ions from entering the pores. For all other pores, we observed that the ice melting temperature decreases as a function of pore size and electrolyte concentration. Using thermodynamic considerations as well as additional experimental data we developed a parametrization that can be used to predict the ice melting point as a function of pore size and total solute molality. For that purpose, we extended a formulation of the effective water activity of aqueous solutions under mechanical pressure toward its application in confinement and tested this new parametrization on literature data.}},
  author       = {{Jantsch, Evelyn and Weinberger, Christian and Tiemann, Michael and Koop, Thomas}},
  issn         = {{1932-7447}},
  journal      = {{The Journal of Physical Chemistry C}},
  pages        = {{24566--24574}},
  title        = {{{Phase Transitions of Ice in Aqueous Salt Solutions within Nanometer-Sized Pores}}},
  doi          = {{10.1021/acs.jpcc.9b06527}},
  year         = {{2019}},
}

@article{25905,
  abstract     = {{A nanocomposite material based on copper(II) oxide (CuO) and its utilization as a highly selective and stable gas-responsive electrical switch for hydrogen sulphide (H2S) detection is presented. The material can be applied as a sensitive layer for H2S monitoring, e.g., in biogas gas plants. CuO nanoparticles are embedded in a rigid, nanoporous silica (SiO2) matrix to form an electrical percolating network of low conducting CuO and, upon exposure to H2S, highly conducting copper(II) sulphide (CuS) particles. By steric hindrance due to the silica pore walls, the structure of the network is maintained even though the reversible reaction of CuO to CuS is accompanied by significant volume expansion. The conducting state of the percolating network can be controlled by a variety of parameters, such as temperature, electrode layout, and network topology of the porous silica matrix. The latter means that this new type of sensing material has a structure-encoded detection limit for H2S, which offers new application opportunities. The fabrication process of the mesoporous CuO@SiO2 composite as well as the sensor design and characteristics are described in detail. In addition, theoretical modeling of the percolation effect by Monte-Carlo simulations yields deeper insight into the underlying percolation mechanism and the observed response characteristics.}},
  author       = {{Paul, Andrej and Schwind, Bertram and Weinberger, Christian and Tiemann, Michael and Wagner, Thorsten}},
  issn         = {{1616-301X}},
  journal      = {{Advanced Functional Materials}},
  title        = {{{Gas Responsive Nanoswitch: Copper Oxide Composite for Highly Selective H2S Detection}}},
  doi          = {{10.1002/adfm.201904505}},
  year         = {{2019}},
}

@inproceedings{22202,
  abstract     = {{Structural parts for aviation have very high demands on the development and production process. Therefore, the entire process must be considered in order to produce high-quality AM metal parts. In this case study, a conventional part was selected to be optimized for AM. The process presented includes component selection, design improvement with a novel approach for topology optimization based on the AMendate algorithm as basis of MSC Apex Generative Design,component production on a SLM 250 HL and post-processing including heat treatment and surface smoothing. With the topology optimization a weight reduction of ~60 % could be realized, whereby the stress distribution is more homogeneous. Furthermore, the challenges of support optimization and post-processing have to be addressed, in order to produce competitive parts.}},
  author       = {{Klippstein, Sven Helge and Duchting, Anne and Reiher, Thomas and Hengsbach, F. and Menge, Dennis and Schmid, Hans-Joachim}},
  booktitle    = {{30th Annual International Solid Freeform Fabrication Symposium}},
  pages        = {{1932--1945}},
  title        = {{{Devolopment, Production and post-processing of a topology optimized aircraft bracket }}},
  volume       = {{30}},
  year         = {{2019}},
}

@article{43185,
  abstract     = {{Der Beitrag skizziert in einem historischen Exkurs zentrale Entwicklungslinien der beruflichen Benachteiligtenförderung. Es wird deutlich, dass gesellschaftliche Veränderungen zu einer deutlich kritischeren und pädagogisch reflektierten Sicht auf berufliche Fördermaßnahmen geführt haben.}},
  author       = {{Heisler, Dietmar}},
  journal      = {{Berufsbildung. Zeitschrift für Theorie-Praxis-Dialog}},
  keywords     = {{Benachteiligtenförderung, Transformation}},
  title        = {{{Transformation und Wandel der Beruflichen Integrationsförderung. Vom „Erfolgsmodell“ zum „Problemfall“.}}},
  volume       = {{175}},
  year         = {{2019}},
}

@article{10014,
  abstract     = {{The cubic, tetragonal, and orthorhombic phase of potassium niobate (KNbO3) are studied based on density-functional theory. Starting from the relaxed atomic geometries, we analyze the influence of self-energy corrections on the electronic band structure within the GW approximation. We find that quasiparticle shifts widen the direct (indirect) band gap by 1.21 (1.44), 1.58 (1.55), and 1.67 (1.64) eV for the cubic, tetragonal, and orthorhombic phase, respectively. By solving the Bethe-Salpeter equation, we obtain the linear dielectric function with excitonic and local-field effects, which turn out to be essential for good agreement with experimental data. From our results, we extract an exciton binding energy of 0.6, 0.5, and 0.5 eV for the cubic, tetragonal, and orthorhombic phase, respectively. Furthermore, we investigate the nonlinear second-harmonic generation (SHG) both theoretically and experimentally. The frequency-dependent second-order polarization tensor of orthorhombic KNbO3 is measured for incoming photon energies between 1.2 and 1.6 eV. In addition, calculations within the independent-(quasi)particle approximation are performed for the tetragonal and orthorhombic phase. The novel experimental data are in excellent agreement with the quasiparticle calculations and resolve persistent discrepancies between earlier experimental measurements and ab initio results reported in the literature.}},
  author       = {{Schmidt, Falko and Riefer, Arthur and Schmidt, Wolf Gero and Schindlmayr, Arno and Imlau, Mirco and Dobener, Florian and Mengel, Nils and Chatterjee, Sangam and Sanna, Simone}},
  issn         = {{2475-9953}},
  journal      = {{Physical Review Materials}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  title        = {{{Quasiparticle and excitonic effects in the optical response of KNbO3}}},
  doi          = {{10.1103/PhysRevMaterials.3.054401}},
  volume       = {{3}},
  year         = {{2019}},
}

@article{13365,
  abstract     = {{The KTiOPO4 (KTP) band structure and dielectric function are calculated on various levels of theory starting from density-functional calculations. Within the independent-particle approximation an electronic transport gap of 2.97 eV is obtained that widens to about 5.23 eV when quasiparticle effects are included using the GW approximation. The optical response is shown to be strongly anisotropic due to (i) the slight asymmetry of the TiO6 octahedra in the (001) plane and (ii) their anisotropic distribution along the [001] and [100] directions. In addition, excitonic effects are very important: The solution of the Bethe–Salpeter equation indicates exciton binding energies of the order of 1.5 eV. Calculations that include both quasiparticle and excitonic effects are in good agreement with the measured reflectivity.}},
  author       = {{Neufeld, Sergej and Bocchini, Adriana and Gerstmann, Uwe and Schindlmayr, Arno and Schmidt, Wolf Gero}},
  issn         = {{2515-7639}},
  journal      = {{Journal of Physics: Materials}},
  pages        = {{045003}},
  publisher    = {{IOP Publishing}},
  title        = {{{Potassium titanyl phosphate (KTP) quasiparticle energies and optical response}}},
  doi          = {{10.1088/2515-7639/ab29ba}},
  volume       = {{2}},
  year         = {{2019}},
}

@article{22445,
  abstract     = {{Am Beispiel des chinesisch-deutschen Kooperationsstudiengangs Maschinenbau an der Chinesisch-Deutschen Technischen Fakultät in Qingdao (China) werden unter Rückgriff auf unterschiedliche im Rahmen formativer Evaluation erhobener Datensätze Möglichkeiten und Grenzen der Integration von Fach- und Sprachlernen sowie Optimierungsmöglichkeiten der Unterstützung des studienvorbereitenden und -begleitenden (Fach-)Spracherwerbs diskutiert.}},
  author       = {{Denzer, Vera and Didier, Andrea and Drumm, Sandra and Hambach, Dennis and Kaplinska-Zajontz, Marta and Noeke, Josef and Settinieri, Julia and Xi, Lin and Zhu, Hongyu}},
  isbn         = {{2511-0853}},
  journal      = {{Informationen Deutsch als Fremdsprache}},
  number       = {{1}},
  pages        = {{178--199}},
  publisher    = {{De Gruyter Mouton}},
  title        = {{{Integration von Sprach- und Fachlernen im Kontext chinesisch-deutscher Kooperationsstudiengänge am Beispiel des Maschinenbaustudiums an der Chinesisch-Deutschen Technischen Fakultät (CDTF, Qingdao/Paderborn)}}},
  doi          = {{10.1515/infodaf-2019-0013}},
  volume       = {{46}},
  year         = {{2019}},
}

@article{25908,
  abstract     = {{Herein we present a new proton-conducting iron(II) metal–organic framework (MOF) of an unusual structure formed by chains of alternating bistriazolate-p-benzoquinone anions and iron(II) cations with four axially coordinated water molecules. These chains assemble via π–π stacking between the aromatic units to form a three-dimensional grid-like network with channel pores filled with water molecules. The material was structurally characterized by single-crystal XRD analysis, and its water and thermal stability was investigated. The proton conductivity was studied by impedance measurements on needle-like single crystals. A simple but efficient measurement setup consisting of interdigital electrodes was used. The influence of the crystal orientation, temperature, and humidity was investigated. The iron(II)-MOF showed the highest proton conductivity of 3.3·10–3 S cm–1 at 22 °C and 94% relative humidity. Contrary to most known structures, the conductivity in this material is controlled by chemical properties of the pore system rather than by grain boundaries. The presented material is the starting point for further tailoring the proton-conducting properties, independent of morphological features which could find potential applications as membrane materials in proton-exchange membrane fuel cells.}},
  author       = {{Bunzen, Hana and Javed, Ali and Klawinski, Danielle and Lamp, Anton and Grzywa, Maciej and Kalytta-Mewes, Andreas and Tiemann, Michael and von Nidda, Hans-Albrecht Krug and Wagner, Thorsten and Volkmer, Dirk}},
  issn         = {{2574-0970}},
  journal      = {{ACS Applied Nano Materials}},
  pages        = {{291--298}},
  title        = {{{Anisotropic Water-Mediated Proton Conductivity in Large Iron(II) Metal–Organic Framework Single Crystals for Proton-Exchange Membrane Fuel Cells}}},
  doi          = {{10.1021/acsanm.8b01902}},
  year         = {{2019}},
}

@article{25906,
  abstract     = {{A composite material of copper oxide (CuO) dispersed in the nanopores of KIT-6 silica (SiO2) is used as a dosimetric sensor for the detection of hydrogen sulfide (H2S) gas in low parts per milion concentrations. The sensor principle is based on the reversible chemical conversion of CuO to CuS, which guarantees a high selectivity, and on the corresponding percolation-induced change in electronic conductance.}},
  author       = {{Paul, Andrej and Weinberger, Christian and Tiemann, Michael and Wagner, Thorsten}},
  issn         = {{2574-0970}},
  journal      = {{ACS Applied Nano Materials}},
  pages        = {{3335--3338}},
  title        = {{{Copper Oxide/Silica Nanocomposites for Selective and Stable H2S Gas Detection}}},
  doi          = {{10.1021/acsanm.9b01004}},
  year         = {{2019}},
}

@inproceedings{21451,
  author       = {{Rostek, Tim and Homberg, Werner}},
  booktitle    = {{AIP Conference Proceedings 2113, 170018}},
  number       = {{1}},
  publisher    = {{AIP Publishing}},
  title        = {{{Improved set up strategies for steel strip straightening machines}}},
  doi          = {{10.1063/1.5112734}},
  volume       = {{2113}},
  year         = {{2019}},
}

@article{21519,
  author       = {{Grabo, Matti and Weber, Daniel and Paul, Andreas and Klaus, Tobias and Bermpohl, Wolfgang and Krauter, Stefan and Kenig, Eugeny}},
  isbn         = {{978-88-95608-73-0}},
  journal      = {{CHEMICAL ENGINEERING TRANSACTIONS}},
  pages        = {{895--900}},
  publisher    = {{AIDIC The Italian Association of Chemical Engineering}},
  title        = {{{Numerical Investigation of the Temperature Distribution in PCM-integrated Solar Modules}}},
  doi          = {{10.3303/CET1976150}},
  volume       = {{76}},
  year         = {{2019}},
}

@inproceedings{21518,
  abstract     = {{Wie jedes technische System unterliegen auch Haushaltskältegeräte einer alterungsbedingten Degeneration, die zu einem Anstieg der Energieaufnahme über die Lebensdauer dieser Geräte führt. Ursache hierfür sind verschiedene Effekte, die in dem vom BMWi geförderten Projekt ALGE untersucht werden. Aus den so gewonnenen Erkenntnissen sollen dann degenerationsbeständigere Haushaltskältegeräte entwickelt werden. Eine wichtige Alterungsursache ist der Anstieg der Wärmeleitfähigkeit des PUR-Schaums der Gehäuseisolierung. Zur Bestimmung dieses Einflusses auf die Energieaufnahme ist die Entwicklung neuer Messmethoden notwendig, die zerstörungsfrei sein und den realen Anwendungsbedingungen möglichst nahekommen sollen. Dazu wurde eine Wärmesenke entwickelt, die den Geräteinnenraum unabhängig vom Kältekreislauf abkühlt. Die Wärmesenke ist als Eiswasserbehälter ausgeführt, sodass die Schmelzenthalpie des Eises die durch die Isolierung in den Geräteinnenraum einfallende Wärme aufnimmt. Durch die Bestimmung der Abtauzeit einer bestimmten Eismenge kann so der alterungsbeeinflusste 𝑘∙𝐴-Wert des Gehäuses von Haushaltskältegeräten bestimmt werden.}},
  author       = {{Paul, Andreas and Moczarski, Lukas and Gieselmann, Mirko and Reineke, Michael and Elsner, Andreas and Baumhögger, Elmar and Sonnenrein, Gerrit and Vrabec, Jadran}},
  isbn         = {{978-3-932715-52-5}},
  location     = {{Ulm}},
  publisher    = {{Deutscher Kälte- und Klimatechnischer Verein e.V. }},
  title        = {{{Bestimmung von Wärmeverlusten in Haushaltskältegeräten}}},
  year         = {{2019}},
}

@article{25619,
  author       = {{Schöppner, Volker and Dörner, M. and Marschik, C. and Roland, W. and Miethlinger, J. and Steinbichler, G.}},
  journal      = {{Polymers}},
  pages        = {{1488--1515}},
  title        = {{{Application of Network Analysis to Flow Systems with Alternating Wave Channels: Part A (Pressure Flows).}}},
  year         = {{2019}},
}

@inproceedings{44308,
  author       = {{Bayazian, Hoda and Schöppner, Volker and Yadegari , Ali and Haddad , Hoda}},
  location     = {{Türkei }},
  title        = {{{Orientation in LLDPE Cast Films Manufactured under Different Processing Parameters}}},
  year         = {{2019}},
}

@inproceedings{22441,
  abstract     = {{According to ISO / ASTM 52900, additive manufacturing (AM) is defined as "the process of joining materials to make parts from 3D model data, usually layer upon layer, as opposed to conventional manufacturing including subtractive manufacturing technologies and formative manufacturing methodologies” [1]. This results in significant advantages over conventional manufacturing methodologies, such as the production of topologically optimized, complex structures, lower material consumption or shorter product development cycles. In order to be able to use these advantages, the possibilities and restrictions of the processes must be known. In particular, selective laser beam melting (SLM), in which a powdery metallic starting material is melted by means of a laser, requires a sound understanding of the process. For this purpose, design guidelines have been presented in various scientific papers. These design guidelines help to design a component in such a way that it can be manufactured successfully using additive manufacturing. These so-called “AMsuitable design guidelines” can be found among others at Adam, Kranz and Thomas [2,3,4,5]. In contrast to established manufacturing processes, the post-processing of additive components is divided into two steps. First, the AM immanent post processing, such as the removing of the component from the building platform or the removing of the remaining powder. These post-processing steps are in the following referred to “post-processing”. Secondly, the subsequent post-processing steps to improve the component properties, such as milling and turning or a stress-relief annealing. These are referred to as “finishing” and form the focus of this paper. With regard to a successful finishing of additively manufactured components, design guidelines must be taken into account that consider the finishing inherent restrictions and possibilities. In the following, these design guidelines are referred to “finishing suitable”. They can deviate significantly from those of conventionally manufactured components in the case of additively manufactured components. Although there are some investigations that deal with the post-processing of additively manufactured components [6,7], there are hardly any design guidelines that are suitable for finishing [8]. Therefore, knowledge about the finishing of additively manufactured components is based on experimental experience rather than on scientific knowledge. For this reason, design guidelines for a finishing suitable design must be methodically determined and quantified. These quantified design guidelines can be used for an automated design check on complex components like topology optimized geometries.}},
  author       = {{Lammers, Stefan and Tominski, Johannes and Zimmer, Detmar}},
  booktitle    = {{II International Conference on Simulation for Additive Manufacturing Sim-AM 2019 11-13 September, 2019}},
  isbn         = {{978-84-949194-8-0}},
  pages        = {{174--185}},
  title        = {{{Guidelines for post processing oriented design of additive manufactured parts for use in topology optimization}}},
  doi          = {{http://congress.cimne.com/sim-am2019/frontal/doc/EbookSim-AM2019.pdf}},
  year         = {{2019}},
}

@inproceedings{25641,
  abstract     = {{Langzeitfestigkeit von Schweißungen aus PP unter Berücksichtigung der Morphologie}},
  author       = {{Schöppner, Volker and Wübbeke, Andrea and Paul, Andre and Tiemann, Michael and Fitze, F. and Austermeier, Laura and Chen, M. and Jakob, F. and Heim, H.-P. and Wu, T. and Niendorf, T. and Röhricht, M-L. and Schmidt, M.}},
  booktitle    = {{Werkstoffwoche (2019)}},
  location     = {{Dresden (Deutschland)}},
  title        = {{{Langzeitfestigkeit von Schweißungen aus PP unter Berücksichtigung der Morphologie}}},
  year         = {{2019}},
}

@inproceedings{15068,
  author       = {{Wiens, Eugen and Homberg, Werner}},
  booktitle    = {{PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019}},
  title        = {{{Forming analysis of tailored tubes with an internal contoured wall thickness and external axial ribs manufactured by internal flow-turning}}},
  doi          = {{10.1063/1.5112535}},
  year         = {{2019}},
}