@techreport{LunnTittelbachHelmrichKrauseetal., author = {Lunn, A. S. and Tittelbach-Helmrich, Klaus and Krause, F.-M. and Becker, T. and Cheetham, B. and Kuhn, M. and Methfessel, Michael and Ettafagh, A. and Secall, M. and Spegel, M.}, title = {Design of PAL and Voice Optimisation for WLAN}, language = {en} } @misc{SullivanWilksWinkleretal., author = {Sullivan, J. T. and Wilks, Regan G. and Winkler, M. T. and Weinhardt, Lothar and Recht, D. and Said, A. J. and Newman, B. K. and Zhang, Y. and Blum, Monika and Krause, S. and Yang, Wan Li and Heske, Clemens and Aziz, M. J. and B{\"a}r, Marcus and Buonassisi, T.}, title = {Soft x-ray emission spectroscopy studies of the electronic structure of silicon supersaturated with sulfur}, abstract = {We apply soft x-ray emission spectroscopy (XES) to measure the electronic structure of crystalline silicon supersaturated with sulfur (up to 0.7 at. \%), a candidate intermediate-band solar cell material. Si L2,3 emission features are observed above the conventional Si valence band maximum, with intensity scaling linearly with S concentration. The lineshape of the S-induced features change across the insulator-to-metal transition, indicating a significant modification of the local electronic structure concurrent with the change in macroscopic electronic behavior. The relationship between the Si L2,3 XES spectral features and the anomalously high sub-band gap infrared absorption is discussed.}, language = {en} } @misc{BlaenKurzDrummondetal., author = {Blaen, Phillip J. and Kurz, Marie Juliette and Drummond, Jennifer D. and Knapp, Julia L. A. and Mendoza-Lera, Clara and Schmadel, Noah M. and Klaar, Megan and J{\"a}ger, Anna and Folegot, Silvia and Lee-Cullin, Joseph and Ward, Adam and Zarnetske, Jay and Datry, Thibault and Milner, Alexander and Lewandowski, J{\"o}rg and Hannah, David M. and Krause, Stefan}, title = {Woody debris is related to reach-scale hotspots of lowland stream ecosystem respiration under baseflow conditions}, series = {Ecohydrology : ecosystems, land and water process interactions, ecohydrogeomorphology}, journal = {Ecohydrology : ecosystems, land and water process interactions, ecohydrogeomorphology}, issn = {1936-0592}, doi = {10.1002/eco.1952}, pages = {23}, language = {en} } @misc{KelleherWardKnappetal., author = {Kelleher, Christa and Ward, Adam Scott and Knapp, Julia L. A. and Blaen, Phillip J. and Kurz, Marie Juliette and Drummond, Jennifer D. and Zarnetske, Jay and Hannah, David M. and Mendoza-Lera, Clara and Schmadel, Noah M. and Datry, Thibault and Lewandowski, J{\"o}rg and Krause, Stefan}, title = {Exploring Tracer Information and Model Framework Trade-offs to Improve Estimation of Stream Transient Storage Processes}, series = {Water Resources Research}, volume = {55}, journal = {Water Resources Research}, number = {4}, issn = {0043-1397}, doi = {10.1029/2018WR023585}, pages = {3481 -- 3501}, language = {en} } @techreport{SpegelReinhardtCheethametal., author = {Spegel, M. and Reinhardt, P. and Cheetham, B. and Lunn, A. S. and Krause, F.-M. and Tittelbach-Helmrich, Klaus}, title = {Final System Performance and Validation Report}, language = {en} } @techreport{SpegelLunnKrauseetal., author = {Spegel, M. and Lunn, A. S. and Krause, F.-M. and Wellhausen, T. and Tittelbach-Helmrich, Klaus and Reinhardt, P. and Cheetham, B.}, title = {506746 - WINDECT STP D2.2 Technical Specification of 173, Demonstration System}, language = {en} } @misc{BaerSchubertMarsenetal., author = {B{\"a}r, Marcus and Schubert, Bj{\"o}rn-Arvid and Marsen, Bj{\"o}rn and Wilks, Regan G. and Blum, M. and Krause, S. and Pookpanratana, Sujitra and Zhang, Y. and Unold, Thomas and Yang, W. and Weinhardt, Lothar and Heske, Clemens and Schock, Hans-Werner}, title = {Cu2ZnSnS4 thin-film solar cell absorbers illuminated by soft x-rays}, series = {Journal of Materials Research}, volume = {27}, journal = {Journal of Materials Research}, number = {8}, issn = {2044-5326}, doi = {10.1557/jmr.2012.59}, pages = {1097 -- 1104}, abstract = {In view of the complexity of thin-film solar cells, which are comprised of a multitude of layers, interfaces, surfaces, elements, impurities, etc., it is crucial to characterize and understand the chemical and electronic structure of these components. Because of the high complexity of the Cu2ZnSn(S,Se)4 compound semiconductor absorber material alone, this is particularly true for kesterite-based devices. Hence, this paper reviews our recent progress in the characterization of Cu2ZnSnS4 (CZTS) thin films. It is demonstrated that a combination of different soft x-ray spectroscopies is an extraordinarily powerful method for illuminating the chemical and electronic material characteristics from many different perspectives, ultimately resulting in a comprehensive picture of these properties. The focus of the article will be on secondary impurity phases, electronic structure, native oxidation, and the CZTS surface composition.}, language = {en} } @incollection{BauriegelKrauseWiegleb, author = {Bauriegel, E. and Krause, M. and Wiegleb, Gerhard}, title = {Renaturierung und Initialsetzung von Trockenrasen in der Bergbaufolgelandschaft}, series = {Naturschutz in Bergbaufolgelandschaften - Landschaftsanalyse und Leitbildentwicklung}, booktitle = {Naturschutz in Bergbaufolgelandschaften - Landschaftsanalyse und Leitbildentwicklung}, editor = {Wiegleb, Gerhard and Br{\"o}ring, Udo and Mrzljak, Jadranka and Schulz, Friederike}, publisher = {Physica-Verlag}, address = {Heidelberg}, isbn = {3-7908-1279-X}, pages = {177 -- 201}, language = {de} } @inproceedings{ReicheKittlerKrauseetal., author = {Reiche, Manfred and Kittler, Martin and Krause, M. and {\"U}bensee, Hartmut}, title = {Carrier Transport on Dislocations}, series = {International Conference on Defects in Semiconductors 2013, proceedings of the 27th International Conference on Defects in Semiconductors, ICDS-2013, Bologna, Italy, 21-26 July 2013}, booktitle = {International Conference on Defects in Semiconductors 2013, proceedings of the 27th International Conference on Defects in Semiconductors, ICDS-2013, Bologna, Italy, 21-26 July 2013}, editor = {Cavallini, Anna and Estreicher, Stefan K.}, publisher = {AIP Publishing}, address = {Melville, New York}, isbn = {978-0-7354-1215-6}, doi = {10.1063/1.4865599}, language = {en} } @misc{MirskyRieplKrauseetal., author = {Mirsky, Vladimir M. and Riepl, Michael and Krause, Christian and Novotny, Ivan and Splonskowski, Markus and Rehacek, Vlastimil and Tvarozek, Vladimir and Hummel, Helmut and Wolfbeis, Otto S.}, title = {Thin film electrodes for capacitive chemo- and biosensors: an optimization of the electrodes geometry}, series = {Materials Science Forum}, volume = {287-288}, journal = {Materials Science Forum}, issn = {1662-9752}, doi = {10.4028/www.scientific.net/MSF.287-288.423}, pages = {423 -- 426}, language = {en} } @misc{MirskyMassKrauseetal., author = {Mirsky, Vladimir M. and Mass, Markus and Krause, Christian and Wolfbeis, Otto S.}, title = {Capacitive approach to determine phospholipase A2 activity towards artificial and natural substrates}, series = {Analytical Chemistry}, volume = {70}, journal = {Analytical Chemistry}, number = {17}, issn = {0003-2700}, doi = {10.1021/ac980102w}, pages = {3674 -- 3678}, abstract = {A capacitive approach has been employed to develop a novel method to determine phospholipase activity. The sensing electrodes have a structure like Au/S(CH₂)₁₇CH₃/substrate/electrolyte. Hydrolysis of the substrate, mediated by phospholipase A₂, leads to the formation of water-soluble products from the insoluble substrate. This results in desorption of these products into aqueous phase and corresponding increase of the electrode capacitance. The requirement of high water solubility of the reaction products can be achieved in two ways. In the first, short-chain phospholipids are used as the substrate, in which case, water-soluble products are formed and no additional reagents are required to promote desorption of these products. The sensors prepared by this strategy provide sensitive qualitative detection of phospholipases. The second way is based on the use of a water-soluble acceptor (for example, β-cyclodextrin) to solubilize the products of hydrolysis. It allows semiquantitative detection of phospholipase activity toward long-chain natural substrates. The reaction kinetics for this case was found to be monoexponential and linearly dependent on the phospholipase concentration. The detection limit of this method, as tested with phospholipase A₂ from bee venom and soy bean lecithin as the substrate, is ∼0.5 ng/mL (500 μunits/mL).}, language = {en} } @misc{MirskyKrauseHeckmann, author = {Mirsky, Vladimir M. and Krause, Christian and Heckmann, Klaus Dietrich}, title = {Capacitive detection of adsorption/desorption on hydrophobized gold electrodes: an application for surfactants adsorption and phospholipase assay}, series = {Chimica Chronica, New Series}, volume = {25}, journal = {Chimica Chronica, New Series}, pages = {179 -- 194}, language = {en} } @misc{KrauseMirskyHeckmann, author = {Krause, Christian and Mirsky, Vladimir M. and Heckmann, Klaus Dietrich}, title = {Capacitive detection of surfactant adsorption on hydrophobized gold electrodes}, series = {Langmuir}, volume = {12}, journal = {Langmuir}, number = {25}, issn = {0743-7463}, doi = {10.1021/la9601869}, pages = {6059 -- 6064}, abstract = {Nonspecific adsorption of surfactants on polycrystalline gold electrodes, covered by a chemically adsorbed monomolecular layer of octadecanethiol, was studied by means of capacitive measurements. Homologous series of fatty acids (from decane to tetradecane acids) and dodecanepyridinium chloride were used as surfactants. The behavior of the electrode was completely different in the first and subsequent cycles of adsorption/desorption. In the first adsorption cycle, an initial capacitance jump at low concentrations (<10 μM) occurs, while later the curves show the usual saturation behavior. The first surfactant layer could not be completely desorbed; only the electrode capacitance shown after the jump was reached. Subsequent cycles do not reveal any capacitance jumps and were completely reversible. Adsorption curves in the series of monoalkyl acids are shifted according to the Traube rule. A comparison with the surfactant adsorption at the air/water interface has been done.}, language = {en} } @misc{MirskyKrauseHeckmann, author = {Mirsky, Vladimir M. and Krause, Christian and Heckmann, Klaus Dietrich}, title = {Capacitive sensor for lipolytic enzymes}, series = {Thin Solid Films}, volume = {284-285}, journal = {Thin Solid Films}, issn = {0040-6090}, doi = {10.1016/S0040-6090(95)08485-1}, pages = {939 -- 941}, abstract = {The preparation of the capacitive biosensor for monitoring the activity of enzymes (lipases, phospholipases, etc.) hydrolysing waterinsoluble substrates into water-soluble products is described. The sensor is based on a sandwich-like structure: Au/S(CH₂)₁₇CH₁/substrate/electrolyte. Hydrolysis of the substrate leads to the formation of water-soluble products and desorption of these compounds from the electrode. When the product formation is the rate-limiting step of this process, the desorption rate is determined by the enzyme activity. The desorption can be easily monitored as an increase of the electrode capacitance. By following this principle it was possible to develop a sensor monitoring phospholipase A₂ activity even at the 50 pg ml-1 level.}, language = {en} } @misc{ShresthaEckartElbazetal., author = {Shrestha, Krishna Prasad and Eckart, Sven and Elbaz, Ayman M. and Giri, Binod Raj and Fritsche, Chris and Seidel, Lars and Roberts, William L. and Krause, Hartmut and Mauß, Fabian}, title = {A comprehensive kinetic model for dimethyl ether and dimethoxymethane oxidation and NOx interaction utilizing experimental laminar flame speed measurements at elevated pressure and temperature}, series = {Combustion and Flame}, volume = {218}, journal = {Combustion and Flame}, issn = {1556-2921}, doi = {10.1016/j.combustflame.2020.04.016}, pages = {57 -- 74}, abstract = {Laminar flame speeds of dimethyl ether and dimethoxymethane at pressures from 1 to 5 bar and initial temperatures from 298 to 373 K were determined experimentally using a constant volume spherical vessel and a heat flux burner setup. This study is the first to report dimethoxymethane laminar flame speeds at a pressure higher than 1 bar. Using these experimental data along with data available in the literature, a new kinetic model for the prediction of the oxidation behavior of dimethyl ether and dimethoxymethane in freely propagating and burner stabilized premixed flames, in shock tubes, rapid compression machines, flow reactors, and a jet-stirred reactor has been developed. The experimental results from the present work and literature are interpreted with the help of the derived kinetic model. This newly developed reaction mechanism considers the redox chemistry of NOx to accommodate the influence of the oxygen level on the onset of fuel conversion and interconversion of NO and NO2. The current model suggests that an increased O2 level promotes the HO2 production, which in turn leads to the formation of OH radicals, which promotes the combustion of the fuel/air mixture under lean conditions. The increase of OH radical concentrations is mainly via the NO/NO2 interconversion reaction channel, NO+HO2=NO2+OH, NO2+H=NO+OH, CH3OCH3+NO2=CH3OCH2+HONO, followed by the thermal decomposition of HONO. This work extends the kinetic database and helps to improve the understanding of dimethyl ether and dimethoxymethane combustion behavior. The kinetic model presented in this work can serve as a base model for hydrocarbons and oxygenated fuels higher than C2.}, language = {en} } @misc{EisenhauerFrankWeigeltetal., author = {Eisenhauer, Nico and Frank, Karin and Weigelt, Alexandra and Bartkowski, Bartosz and Beugnon, R{\´e}my and Liebal, Katja and Mahecha, Miguel and Quaas, Martin and Al-Halbouni, Djamil and Bastos, Ana and Bohn, Friedrich J. and Brito, Mariana Madruga de and Denzler, Joachim and Feilhauer, Hannes and Fischer, Rico and Fritsche, Immo and Guimaraes-Steinicke, Claudia and H{\"a}nsel, Martin and Haun, Daniel B. M. and Herrmann, Hartmut and Huth, Andreas and Kalesse-Los, Heike and Koetter, Michael and Kolleck, Nina and Krause, Melanie and Kretschmer, Marlene and Leit{\~a}o, Pedro J. and Masson, Torsten and Mora, Karin and M{\"u}ller, Birgit and Peng, Jian and P{\"o}hlker, Mira L. and Ratzke, Leonie and Reichstein, Markus and Richter, Solveig and R{\"u}ger, Nadja and S{\´a}nchez-Parra, Beatriz and Shadaydeh, Maha and Sippel, Sebastian and Tegen, Ina and Thr{\"a}n, Daniela and Umlauft, Josefine and Wendisch, Manfred and Wolf, Kevin and Wirth, Christian and Zacher, Hannes and Zaehle, S{\"o}nke and Quaas, Johannes}, title = {A belowground perspective on the nexus between biodiversity change, climate change, and human well-being}, series = {Journal of Sustainable Agriculture and Environment}, volume = {3}, journal = {Journal of Sustainable Agriculture and Environment}, number = {2}, publisher = {Wiley}, issn = {2767-035X}, doi = {10.1002/sae2.12108}, pages = {12}, abstract = {Soil is central to the complex interplay among biodiversity, climate, and society. This paper examines the interconnectedness of soil biodiversity, climate change, and societal impacts, emphasizing the urgent need for integrated solutions. Human-induced biodiversity loss and climate change intensify environmental degradation, threatening human well-being. Soils, rich in biodiversity and vital for ecosystem function regulation, are highly vulnerable to these pressures, affecting nutrient cycling, soil fertility, and resilience. Soil also crucially regulates climate, influencing energy, water cycles, and carbon storage. Yet, climate change poses significant challenges to soil health and carbon dynamics, amplifying global warming. Integrated approaches are essential, including sustainable land management, policy interventions, technological innovations, and societal engagement. Practices like agroforestry and organic farming improve soil health and mitigate climate impacts. Effective policies and governance are crucial for promoting sustainable practices and soil conservation. Recent technologies aid in monitoring soil biodiversity and implementing sustainable land management. Societal engagement, through education and collective action, is vital for environmental stewardship. By prioritizing interdisciplinary research and addressing key frontiers, scientists can advance understanding of the soil biodiversity-climate change-society nexus, informing strategies for environmental sustainability and social equity.}, language = {en} } @misc{BeckerKrauseMethfesseletal., author = {Becker, T. and Krause, F.-M. and Methfessel, Michael and Tittelbach-Helmrich, Klaus and Lunn, A. S.}, title = {Verfahren f{\"u}r drahtlosen Handover bei Datenstr{\"o}men {\"u}ber WLAN Systeme}, language = {de} } @misc{BeckerKrauseMethfesseletal., author = {Becker, T. and Krause, F.-M. and Methfessel, Michael and Tittelbach-Helmrich, Klaus}, title = {Verfahren zum Betreiben einer Datenverbindung}, language = {de} } @misc{BeyerKrauseMethfesseletal., author = {Beyer, T. and Krause, F.-M. and Methfessel, Michael and Tittelbach-Helmrich, Klaus and Lunn, A. S.}, title = {Verfahren f{\"u}r drahtlosen Handover bei Datenstr{\"o}men {\"u}ber WLAN Systeme}, language = {de} } @misc{BeckerKrauseMethfesseletal., author = {Becker, T. and Krause, F.-M. and Methfessel, Michael and Tittelbach-Helmrich, Klaus}, title = {Verfahren zum Betreiben einer Datenverbindung}, language = {en} }