Rebecca Momper, Heng Zhang, Shuai Chen, Henry Halim, Ewald Johannes, Stoyan Yordanov, Daniele Braga, Balthasar Blülle, David Doblas, Tobias Kraus, Mischa Bonn, Hai I. Wang, Andreas Riedinger,
Semiconductor nanoplatelets exhibit spectrally pure, directional fluorescence. To make polarized light emission accessible and the charge transport effective, nanoplatelets have to be collectively oriented in the solid state. We discovered that the collective nanoplatelets orientation in monolayers can be controlled kinetically by exploiting the solvent evaporation rate in self-assembly at liquid interfaces. Our method avoids insulating additives such as surfactants, making it ideally suited for ...
Tópico(s): Molecular Junctions and Nanostructures
2020 - American Chemical Society | Nano Letters
Christian Wahlen, Jan Blankenburg, Philipp von Tiedemann, Ewald Johannes, Paweł Sajkiewicz, Axel H. E. Müller, George Floudas, Holger Frey,
The reactivity of the biobased monomer β-farnesene in the statistical anionic copolymerization with styrene and the effect of the bottlebrush-like polyfarnesene structure on the phase separation behavior were investigated. Furthermore, thermal and material properties of β-farnesene-based thermoplastic elastomers, based on tri- and pentablock copolymers with styrene, and their processing behavior were investigated. As shown by 1H NMR online kinetics, in analogy to both isoprene and β-myrcene, the ...
Tópico(s): Polymer crystallization and properties
2020 - American Chemical Society | Macromolecules
Elena Steiert, Ewald Johannes, Annika Wagner, Ute A. Hellmich, Holger Frey, Peter Wich,
A protein nanoparticle system based on cytochrome c was modified with acid-degradable polyethylene glycol (PEGylation). Vinyl ether moieties distributed in the polyether backbone, enabled particle degradation at slightly acidic pH.
Tópico(s): Advanced biosensing and bioanalysis techniques
2019 - Royal Society of Chemistry | Polymer Chemistry
Alexander Klasen, Philipp Baumli, Qu Sheng, Ewald Johannes, Simon Bretschneider, Ilka Hermes, V. Bergmann, Christopher Gort, Amelie Axt, Stefan A. L. Weber, Heejae Kim, Hans‐Jürgen Butt, Wolfgang Tremel, Rüdiger Berger,
We report that UV-ozone treatment of TiO2 anatase thin films is an efficient method to increase the conductance through the film by more than 2 orders of magnitude. The increase in conductance is quantified via conductive scanning force microscopy on freshly annealed and UV-ozone-treated TiO2 anatase thin films on fluorine-doped tin oxide substrates. The increased conductance of TiO2 anatase thin films results in a 2% increase of the average power conversion efficiency (PCE) of methylammonium lead ...
Tópico(s): Quantum Dots Synthesis And Properties
2019 - American Chemical Society | The Journal of Physical Chemistry C
... Arbeit. Munchen/Basel: Reinhardt 1999. 241 S. 2. Ewald Johannes Brunner/Petra Bauer/Susanne Volkmar (Hrsg.): Soziale Einrichtungen ...
Tópico(s): Social Policies and Healthcare Reform
2000 - Verlagsgruppe Beltz | Zeitschrift für Pädagogik
Emma J. Kooistra, Nicole Waalders, Inge Grondman, Nico Janssen, Aline de Nooijer, Mihai G. Netea, Frank L. van de Veerdonk, Esther Ewalds, Johannes G. van der Hoeven, Matthijs Kox, Peter Pickkers,
A subset of critically ill COVID-19 patients develop a hyperinflammatory state. Anakinra, a recombinant interleukin-1 receptor antagonist, is known to be effective in several hyperinflammatory diseases. We investigated the effects of anakinra on inflammatory parameters and clinical outcomes in critically ill, mechanically ventilated COVID-19 patients with clinical features of hyperinflammation.In this prospective cohort study, 21 critically ill COVID-19 patients treated with anakinra were compared ...
Tópico(s): Sepsis Diagnosis and Treatment
2020 - BioMed Central | Critical Care
Patrick Köhnen, Simon Ewald, Johannes Henrich Schleifenbaum, Andrey Belyakov, Christian Haase,
Tópico(s): High Entropy Alloys Studies
2020 - Elsevier BV | Additive manufacturing
Fabian Kies, Yuji Ikeda, Simon Ewald, Johannes Henrich Schleifenbaum, Bengt Hallstedt, Fritz Körmann, Christian Haase,
Density functional theory (DFT) calculations were performed on AlxCyCoFeMnNi multi-principal element alloys (MPEAs) to understand the influence of Al and C on the stacking-fault energy (SFE). C addition to CoFeMnNi resulted in increased SFE, while it decreased in Al-alloyed CoFeMnNi. For experimental verification, Al0.26CyCoFeMnNi with 0, 1.37 and 2.70 at% C were designed by computational thermodynamics, produced by additive manufacturing (AM) and characterized by tensile tests and microstructure analysis. ...
Tópico(s): Intermetallics and Advanced Alloy Properties
2019 - Elsevier BV | Scripta Materialia
S. Ewald, Johannes vor dem Esche, Sakir Uen, Fabian Neikes, H. Vetter, Thomas Mengden,
Tópico(s): Cardiovascular Syncope and Autonomic Disorders
2006 - Adis, Springer Healthcare | Clinical Drug Investigation
Philipp Wessels, Johannes Ewald, Marek Wieland, T. Nisius, Gennaro Abbati, Stefan Baumbach, Johannes Overbuschmann, Andreas Vogel, Alexander Neumann, Jens Viefhaus, Hans Peter Oepen, Guido Meier, Thomas Wilhein, Markus Drescher,
We present first time-resolved measurements of a new mobile full-field transmission microscope [1] obtained at the soft X-ray beamline P04 at the high brilliance synchrotron radiation source PETRA III.
Tópico(s): Advanced Electron Microscopy Techniques and Applications
2014 - IOP Publishing | Journal of Physics Conference Series
Wolfgang Tschacher, Ewald Johannes Brunner, Günter Schiepek,
A systemic approach to group dynamics is discussed on the basis of self-organization theory. Groups are conceived of as nonlinear systems characterized by microscopic complexity, circular causality and openness to their psycho-social environments. One possible way of research on group patterns through recursive sculpturing is described; pilot study results with this method are presented. A computational shell for the simulation of social distance regulation is introduced which models attributes ...
Tópico(s): Opinion Dynamics and Social Influence
1992 - Springer Nature | Springer series in synergetics
Kathrin Schopen, Ann C. Ewald, Bernd Johannes, Wilhelm Bloch, Jörn Rittweger, Petra Frings‐Meuthen,
Background: Whey protein is known to reduce postprandial glycaemia in people with type 2 diabetes mellitus. Lupin as a vegetable source of protein could be considered as an alternative, as the percentage of vegetarian and vegan consumers is raising. The present study compares the acute glycemic effects of whey and lupin in healthy volunteers following a carbohydrate-rich reference meal. Methods In cross-over design, three standardized meals (reference meal; reference meal + whey; reference meal + lupin) ...
Tópico(s): Muscle metabolism and nutrition
2017 - Frontiers Media | Frontiers in Physiology
Vicki J. Keast, Johannes Ewald, K. S. B. De Silva, Michael B. Cortie, B. Monnier, Dylan Cuskelly, Erich H. Kisi,
The color of Cu–Zn brasses range from the red of copper through bright yellow to grey-silver as the Zn content increases. Here we examine the mechanism by which these color changes occur. The optical properties of this set of alloys has been calculated using density functional theory (DFT) and compared to experimental spectroscopy measurements. The optical response of the low Zn content α-brasses is shown to have a distinctly different origin to that in the higher content β′, γ and ε-brasses. The ...
Tópico(s): Quasicrystal Structures and Properties
2015 - Elsevier BV | Journal of Alloys and Compounds
Jan Seifert, Ewald Naumann, Johannes Hewig, Dirk Hagemann, Dieter Bartussek,
The motivational context is an important variable in experimental research. The present study investigates the effects of reward and punishment on performance in a noise-compatibility-task [Eriksen, B.A., Eriksen, C.W., 1974. Effects of noise letters upon the identification of a target letter in a nonsearch task. Perception and Psychophysics 16 (1), 143–149]. Flanking distractors indicated a response, which was identical, undefined, or opposite to the appropriate response indicated by the central ...
Tópico(s): Multisensory perception and integration
2005 - Elsevier BV | Biological Psychology
... the King (Queen)--Author unknown Denmark: Kong Christian--Johannes Ewald and Der er et yndigt land--Adam G. ...
Tópico(s): Global Politics and Economy
1996 - Music Library Association | Notes
Philipp Wessels, Johannes Ewald, Marek Wieland, Thomas Nisius, Andreas Vogel, Jens Viefhaus, Guido Meier, Thomas Wilhein, Markus Drescher,
The authors have built an X-ray microscope capable of taking snapshots of the domain formation process with a high spatial resolution down to a few ten nanometers. By exposing the sample to intense magnetic field pulses, they destroy the stable domain pattern and probe the rapid time-evolution of the sample magnetization stroboscopically with soft X-ray flashes created by the storage ring PETRA III at DESY in Hamburg. These flashes enable resolving very fast changes in the domain configuration occurring ...
Tópico(s): Physics of Superconductivity and Magnetism
2014 - American Physical Society | Physical Review B
Ewald Johannes, Jan Blankenburg, Matthias Worm, Laura Besch, Ronald E. Unger, Wolfgang Tremel, Holger Frey, Hannah Pohlit,
PEG is the gold standard polymer for pharmaceutical applications, however it lacks degradability. Degradation under physiologically relevant pH as present in endolysosomes, cancerous and inflammatory tissues is crucial for many areas. The authors present anionic ring-opening copolymerization of ethylene oxide with 3,4-epoxy-1-butene (EPB) and subsequent modification to introduce acid-degradable vinyl ether groups as well as methacrylate (MA) units, enabling radical cross-linking. Copolymers with different ...
Tópico(s): Polymer Surface Interaction Studies
2019 - Wiley | Chemistry - A European Journal
Ewald M. Wondrak, Johannes Löwer, Reinhard Kurth,
Potential specific inhibitors of HIV RNA-dependent DNA polymerase (RDDP) were examined in an in-vitro test system containing purified HIV-1 RDDP, or functionally purified cellular DNA-dependent DNA polymerases α, β and γ. A wide variety of drugs were tested for their specific inhibitory activity against the viral enzyme to identify substances which, at the same concentration, did not inhibit the cellular DNA polymerases. Phosphonoformic acid and derivatives were found to be the most specific inhibitors, ...
Tópico(s): HIV Research and Treatment
1988 - Oxford University Press | Journal of Antimicrobial Chemotherapy
Ewald M. Wondrak, Johannes Löwer, Reinhard Kurth,
Summary The RNA-dependent DNA polymerase (RDDP) of human immunodeficiency virus (HIV) was purified from sucrose density gradient-banded virus by four successive procedures: anion exchange chromatography, cation exchange chromatography, affinity chromatography on oligo(dT)-cellulose and adsorption chromatography on hydroxyapatite. The enzyme preparation was free of cellular DNA-dependent DNA polymerase activity. The properties of HIV RDDP were determined with a variety of template-primers. Generally, ...
Tópico(s): HIV/AIDS drug development and treatment
1986 - Microbiology Society | Journal of General Virology
Ute Fricke, Sarah Redlich, Jie Zhang, Cynthia Tobisch, Sandra Rojas‐Botero, Caryl Benjamin, Jana Englmeier, Cristina Ganuza, Rebekka Riebl, Johannes Uhler, Lars Uphus, Jörg Ewald, Johannes Kollmann, Ingolf Steffan‐Dewenter,
Higher temperatures can increase metabolic rates and carbon demands of invertebrate herbivores, which may shift leaf-chewing herbivory among plant functional groups differing in C:N (carbon:nitrogen) ratios. Biotic factors influencing herbivore species richness may modulate these temperature effects. Yet, systematic studies comparing leaf-chewing herbivory among plant functional groups in different habitats and landscapes along temperature gradients are lacking. This study was conducted on 80 plots ...
Tópico(s): Plant and animal studies
2022 - Springer Science+Business Media | Oecologia
Wytske W. Geense, Mark van den Boogaard, Marco A. A. Peters, Koen S. Simons, Esther Ewalds, Hester Vermeulen, Johannes G. van der Hoeven, Marieke Zegers,
Objectives: Although patient’s health status before ICU admission is the most important predictor for long-term outcomes, it is often not taken into account, potentially overestimating the attributable effects of critical illness. Studies that did assess the pre-ICU health status often included specific patient groups or assessed one specific health domain. Our aim was to explore patient’s physical, mental, and cognitive functioning, as well as their quality of life before ICU admission. Design: ...
Tópico(s): Hip and Femur Fractures
2020 - Lippincott Williams & Wilkins | Critical Care Medicine
Thomas Mengden, S. Ewald, Stefanie Kaufmann, Johannes vor dem Esche, Sakir Uen, H. Vetter,
To investigate the feasibility of blood pressure (BP) telemonitoring in previous uncontrolled hypertensives treated with olmesartan medoxomil in a clinical practice setting.Patients (n = 53) with untreated, uncontrolled or insufficiently treated hypertension were selected by physicians to receive olmesartan medoxomil 10-40 mg/day for 12 weeks. Office BP values were determined by a physician at baseline and after 12 weeks' treatment; BP self-measurement (BPSM) was conducted throughout the 12-week treatment ...
Tópico(s): Hemodynamic Monitoring and Therapy
2004 - Lippincott Williams & Wilkins | Blood Pressure Monitoring
Ute Fricke, Ingolf Steffan‐Dewenter, Jie Zhang, Cynthia Tobisch, Sandra Rojas‐Botero, Caryl Benjamin, Jana Englmeier, Cristina Ganuza, Maria Haensel, Rebekka Riebl, Johannes Uhler, Lars Uphus, Jörg Ewald, Johannes Kollmann, Sarah Redlich,
Arthropod predators are important for ecosystem functioning by providing top-down regulation of insect herbivores. As predator communities and activity are influenced by biotic and abiotic factors on different spatial scales, the strength of top-down regulation ('arthropod predation') is also likely to vary. Understanding the combined effects of potential drivers on arthropod predation is urgently needed with regard to anthropogenic climate and land-use change. In a large-scale study, we recorded ...
Tópico(s): Species Distribution and Climate Change
2022 - Public Library of Science | PLoS ONE
Viktoria Höller, Heidelis A. Seebacher, David Zach, Nora Schwegel, Klemens Ablasser, Ewald Kolesnik, Johannes Gollmer, Gert Waltl, Peter P. Rainer, Sarah Verheyen, Andreas Zirlik, Nicolas Verheyen,
Accumulating evidence suggests that individuals with sarcomeric hypertrophic cardiomyopathy (HCM) carrying MYH7 mutations may have a worse prognosis than MYBPC3 mutation carriers. Myocardial deformation analysis is superior to standard echocardiography in detecting subtle myocardial dysfunction and scar formation, but studies evaluating the association with HCM genotype are scarce. We therefore aimed to compare myocardial strain parameters between MYBPC3 and MYH7 mutation carriers with proven HCM. ...
Tópico(s): Congenital heart defects research
2021 - Multidisciplinary Digital Publishing Institute | Genes
Iris Raffeis, Frank Adjei-Kyeremeh, Simon Ewald, Johannes Henrich Schleifenbaum, Andreas Bührig‐Polaczek,
Hot working tool steels (HWTS) are popular for industrial applications such as injection molding tools, and casting dies because of their high wear resistance, fatigue, strength, and toughness properties, even at elevated temperatures. Conventionally, they go through multi-stage heat treatments in order to attain targeted microstructures. Achieving such microstructures with a laser powder bed fusion (LPBF) process will require tailor-made process parameters since it is characterized by non-equilibrium ...
Tópico(s): Welding Techniques and Residual Stresses
2022 - Multidisciplinary Digital Publishing Institute | Journal of Manufacturing and Materials Processing
Martin Weichert, Alexander Lichius, Bert-Ewald Priegnitz, Ulrike Brandt, Johannes Gottschalk, Thorben Nawrath, Ulrike Groenhagen, Nick D. Read, Stefan Schulz, André Fleißner,
Significance Deficiencies in sterol biosynthesis resulting in the accumulation of precursor sterol molecules are commonly associated with cellular malfunctioning and disease, including neurodegenerative and inflammatory disorders. However, the molecular and cellular consequences of the aberrant accumulation of sterol precursors are not understood. In particular, it is unclear whether specific biochemical or signaling pathways are targeted by the precursors and to what extent their specific structures ...
Tópico(s): Microbial Natural Products and Biosynthesis
2016 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Ewald Wöll, Martin Gschwentner, Johannes Fürst, Sabine E. Hofer, Gabriele Buemberger, P. Deetjen, Markus Paulmichl, A. Jungwirth, J. Frick,
Tópico(s): Molecular Sensors and Ion Detection
1996 - Springer Science+Business Media | Pflügers Archiv - European Journal of Physiology
Philipp Wessels, Moritz Schlie, Marek Wieland, Johannes Ewald, Gennaro Abbati, Stefan Baumbach, Johannes Overbuschmann, T. Nisius, Andreas Vogel, Alexander Neumann, Alke Meents, Jens Viefhaus, Hans Peter Oepen, Guido Meier, Thomas Wilhein, Markus Drescher,
We present the setup of a new transmission X-ray microscope using zone plates at the soft X-ray beamline P04 at PETRA III, designed to utilize the X-ray magnetic circular dichroism (XMCD) contrast for imaging the magnetic orientation of nanostructured materials.We present the first results obtained with this setup at PETRA III using vacuum chambers with built-in multi-axis micropositioning stages that can be easily customized to mount a variety of components like condenser, samples, coils, zone plates ...
Tópico(s): Advanced Electron Microscopy Techniques and Applications
2013 - IOP Publishing | Journal of Physics Conference Series
Philipp von Tiedemann, Erik Kersten, Ewald Johannes, Torsten Gereon Linder, Christian Fuchs, Manfred Wagner, Holger Frey,
Capitalizing on the inertness of styrene toward Grignard reagents, 4-vinylphenylmagnesium bromide was utilized for the rapid and convenient preparation of the protected monomer 2,2-dimethyl-4-(4-vinylbenzyl)-1,3-dioxolane (DMVBDO), avoiding the use of catalysts and painstaking purification protocols. Well-defined homopolymers, statistical copolymers, and block copolymers with styrene (S) as a comonomer were prepared in THF at −78 °C via carbanionic living polymerization. The overall molecular weights ...
Tópico(s): Synthetic Organic Chemistry Methods
2020 - American Chemical Society | Macromolecules
Marc Schläppi, Christoph Ewald, Jürgen Johannes Kuehn, Tomas Weinert, Roman Huber,
So-called spontaneous remissions in cancer often seem to occur after febrile events. Mistletoe preparations (MPs) are used off-label intravenously to induce fever within concepts of integrative oncology. We wanted to investigate the frequency of febrile reactions and safety related to intravenously applied MPs (IAMPs).This was a retrospective analysis of data from consecutive cancer patients who were treated in 2 anthroposophic hospitals with IAMPs. The main outcome parameter was the rate of core ...
Tópico(s): Herbal Medicine Research Studies
2016 - SAGE Publishing | Integrative Cancer Therapies