TY - GEN A1 - Duda, Niklas A1 - Nowak, Thorsten A1 - Hartmann, Markus A1 - Schadhauser, Michael A1 - Cassens, Björn A1 - Wägemann, Peter A1 - Nabeel, Muhammad A1 - Ripperger, Simon A1 - Herbst, Sebastian A1 - Meyer-Wegener, Klaus A1 - Mayer, Frieder A1 - Dressler, Falko A1 - Schröder-Preikschat, Wolfgang A1 - Kapitza, Rüdiger A1 - Robert, Jörg A1 - Thielecke, Jörn A1 - Weigel, Robert A1 - Kölpin, Alexander T1 - BATS: Adaptive Ultra Low Power Sensor Network for Animal Tracking T2 - Sensors Y1 - 2018 U6 - https://doi.org/10.3390/s18103343 SN - 1424-8220 VL - 18 IS - 10 ER - TY - GEN A1 - Meinel, Birgit A1 - Koschwitz, Tim A1 - Heinemann, Robert A1 - Acker, Jörg T1 - The texturization process during horizontal acidic etching of multi-crystalline silicon wafers T2 - Materials Science in Semiconductor Processing N2 - Horizontal wet-chemical etching of silicon wafers in an HF/HNO3/H2SiF6 mixture is the most widely-used technique to texturize multi-crystalline silicon wafers for solar cell production. For the first time, the etch rates were determined separately for the upper and lower side during the horizontal texturization and the their different morphologies. The dependency of the surface morphology from the etch rate and etch depth is proven. Furthermore, the influence of the temperature and stirring rates on the morphological development for the upper and lower side of the wafer were examined. From temperature-dependent measurements, activation energies in the range from 17 kJ/mol to 40 kJ/mol on the upper side and from 23 kJ/mol to 40 kJ/mol on the lower side dependent from the etching time were determined. The observed results reveal a connection between the etch depth, the agitation of the etch solution, the morphology and the reflectivity of the separate wafer sides. KW - Acidic etching KW - Surface properties KW - Confocal microscopy KW - Reflectivity KW - Activation energy KW - silicon KW - HF/HNO3 mixture KW - solar cell Y1 - 2014 UR - http://www.sciencedirect.com/science/article/pii/S136980011400482X U6 - https://doi.org/10.1016/j.mssp.2014.08.047 SN - 1369-8001 VL - 26 SP - 695 EP - 703 ER - TY - GEN A1 - Juhlke, Tobias R. A1 - Geldern, Robert van A1 - Barth, Johannes A. C. A1 - Bendix, Jörg A1 - Bräuning, Achim A1 - Garel, Emilie A1 - Häusser, Martin A1 - Huneau, Frédéric A1 - Knerr, Isabel A1 - Santoni, Sébastien A1 - Szymczak, Sonja A1 - Trachte, Katja T1 - Temporal offset between precipitation and water uptake of Mediterranean pine trees varies with elevation and season T2 - Science of the Total Environment N2 - For climate models that use paleo-environment data to predict future climate change, tree-ring isotope variations are one important archive for the reconstruction of paleo-hydrological conditions. Due to the rather complicated pathway of water, starting from precipitation until its uptake by trees and the final incorporation of its components into tree-ring cellulose, a closer inspection of seasonal variations of tree water uptake is important. In this study, branch and needle samples of two pine species (Pinus pinaster and Pinus nigra subsp. laricio) and several water compartments (precipitation, creek, soil) were sampled over a two-year period and analyzed for the temporal variations of their oxygen and hydrogen stable isotope ratios (δ18O and δ2H) at five sites over an elevation gradient from sea level to around 1600 m a.s.l. on the Mediterranean island of Corsica (France). A new model was established to disentangle temporal relationships of source water uptake of trees. It uses a calculation method that incorporates the two processes mostly expected to affect source water composition: mixing of waters and evaporation. The model results showed that the temporal offset from precipitation to water uptake is not constant and varies with elevation and season. Overall, seasonal source water origin was shown to be dominated by precipitation from autumn and spring. While autumn precipitation was a more important water source for trees growing at mid- (~800–1000 m a.s.l) and high-elevation (~1600 m a.s.l.) sites, trees at coastal sites mostly took up water from late winter and spring. These findings show that predicted decreases in precipitation amounts during the wet season in the Mediterranean can have strong impacts on water availability for pine trees, especially at higher elevations. KW - Oxygen isotopes KW - Hydrogen isotopes KW - Mediterranean KW - Soil water KW - Water uptake KW - Pine trees Y1 - 2021 U6 - https://doi.org/10.1016/j.scitotenv.2020.142539 VL - 755 IS - 2 ER - TY - GEN A1 - Kuhn, Ramona A1 - Bryant, Isaac Mbir A1 - Jensch, Robert A1 - Böllmann, Jörg T1 - Applications of Environmental Nanotechnologies in Remediation, Wastewater Treatment, Drinking Water Treatment, and Agriculture T2 - Applied Nano N2 - Today, nanotechnologies (NTs) are well established in both private households and commercial markets. NTs are fully accepted in several sectors, such as medicine and pharmacy, and in industries, such as chemistry, electricity, food production, military, and other commercial branches, due to their unique properties. With regard to the growing demands for environmental resources caused by the still-growing global population, the application of NTs is an extremely important new branch in the environmental sector, delivering several advantages. Our review provides a comprehensive overview of the current developments in environmental remediation, wastewater treatment, drinking water treatment, and agriculture. More specifically, in the section on environmental remediation, we review the application of NTs towards enhanced reductive dechlorination, removal of heavy metals and remediation of oil spills. In the section on wastewater treatment, we highlight developments in the adsorption of heavy metals and persistent substances, advanced photocatalytic degradation of common wastewater pollutants, and improvements in membrane filtration processes. In the section on drinking water treatment, we discuss applications for the enhanced disinfection of pathogens, removal of heavy metals, point-of-use treatments, and the removal of organic matter. In the final section, on agriculture, we provide an overview of precision farming and the current state of the art concerning nanofertilisers, nanopesticides, nanoherbicides, and nano(bio)sensors. Y1 - 2022 UR - https://www.mdpi.com/2673-3501/3/1/5 U6 - https://doi.org/10.3390/applnano3010005 SN - 2673-3501 VL - 3 IS - 1 SP - 54 EP - 90 ER - TY - BOOK A1 - Stöhr, Robert A1 - Lohwasser, Diana A1 - Noack Napoles, Juliane A1 - Burghardt, Daniel A1 - Dederich, Markus A1 - Dziabel, Nadine A1 - Krebs, Moritz A1 - Zirfas, Jörg T1 - Schlüsselwerke der Vulnerabilitätsforschung Y1 - 2019 SN - 978-3-658-20304-7 PB - Springer VS CY - Wiesbaden ER - TY - RPRT A1 - Thonicke, Kirsten A1 - Rahner, Eva A1 - Arneth, Almut A1 - Bartkowski, Bartosz A1 - Bonn, Aletta A1 - Döhler, Christian A1 - Finger, Robert A1 - Freitag, Jens A1 - Grosch, Rita A1 - Grossart, Hans-Peter A1 - Grützmacher, Kim A1 - Hartman Scholz, Amber A1 - Häuser, Christoph A1 - Hickler, Thomas A1 - Hölker, Franz A1 - Jähnig, Sonja C. A1 - Jeschke, Jonathan A1 - Kassen, Rees A1 - Kastner, Thomas A1 - Kramer-Schadt, Stephanie A1 - Krug, Cornelia A1 - Lakner, Sebastian A1 - Loft, Lasse A1 - Matzdorf, Bettina A1 - Meakins, Felicity A1 - De Meester, Luc A1 - Monaghan, Michael T. A1 - Müller, Daniel A1 - Overmann, Jörg A1 - Quaas, Martin A1 - Radchuk, Viktoriia A1 - Reyer, Christopher A1 - Roos, Christian A1 - Scholz, Imme A1 - Schroer, Sibylle A1 - Sioen, Giles Bruno A1 - Sommer, Simone A1 - Sommerwerk, Nike A1 - Tockner, Klement A1 - Turk, Zachary A1 - Warner, Barbara A1 - Wätzold, Frank A1 - Wende, Wolfgang A1 - Veenstra, Tonjes A1 - Voort, Hein van de T1 - 10 Must-Knows aus der Biodiversitätsforschung Y1 - 2022 U6 - https://doi.org/10.5281/zenodo.6257476 PB - Potsdam-Institut für Klimafolgenforschung e.V. (PIK) CY - Potsdam ER - TY - GEN A1 - Szymczak, Sonja A1 - Barth, Johannes A. C. A1 - Bendix, Jörg A1 - Huneau, Frédéric A1 - Garel, Emilie A1 - Häusser, Martin A1 - Juhlke, Tobias R. A1 - Knerr, Isabel A1 - Santoni, Sébastien A1 - Mayr, Christoph C. A1 - Trachte, Katja A1 - Geldern, Robert van A1 - Bräuning, Achim T1 - First indications of seasonal and spatial variations of water sources in pine trees along an elevation gradient in a Mediterranean ecosystem derived from δ18O T2 - Chemical Geology N2 - Water availability is the most important factor for the vitality of forest ecosystems, especially in dry environments. The Mediterranean region is one of the hotspots of future climate change; therefore, data on the water cycle are urgently needed. We measured oxygen isotope compositions in creek water, precipitation, stem water, needle water, and tree-ring cellulose over one growing season to establish the relationship between isotope compositions in different compartments along a fractionation pathway. We analyzed plant material from pine trees (Pinus nigra J.F. Arn subsp. laricio (Poiret) Maire var. Corsicana Hyl. and Pinus pinaster Aiton) at five locations along an elevation gradient from sea level to 1600 m asl. We traced back the oxygen isotope composition from source to sink in tree-ring cellulose in order to identify the water sources used by the trees, and to quantify the extent of isotope fractionation processes. Our results showed that the trees used different water sources over the course of the growing season, ranging from winter snow meltwater to summer precipitation at higher sites and deep soil water reservoirs at coastal sites. Needle water enrichment was higher at higher elevation sites than at coastal locations, highlighting the importance of site-specific climate conditions on the isotopic composition values in tree material. Water availability seems to be most restricted at the highest site, making these trees most vulnerable to climate change. KW - Oxygen isotopes KW - Pinus nigra KW - Pinus pinaster KW - Needle water enrichment KW - Xylem water KW - Water source Y1 - 2020 U6 - https://doi.org/10.1016/j.chemgeo.2020.119695 VL - 2020 IS - 549 ER - TY - GEN A1 - Knerr, Isabel A1 - Trachte, Katja A1 - Egli, Sebastian A1 - Barth, Johannes A. C. A1 - Bräuning, Achim A1 - Garel, Emilie A1 - Häusser, Martin A1 - Huneau, Frédéric A1 - Juhlke, Tobias R. A1 - Santoni, Sébastien A1 - Szymczak, Sonja A1 - Geldern, Robert van A1 - Bendix, Jörg T1 - Fog - low stratus (FLS) regimes on Corsica with wind and PBLH as key drivers T2 - Atmospheric Research N2 - The French Mediterranean island of Corsica is already today confronted with a clear tendency towards water shortage, leading not only to socio-economical, but also to ecological problems. A potential, but not very widespread source of water is the presence of near-ground clouds, mostly fog. In this study, we investigate fog-low stratus (FLS) frequencies in Corsica, derived from a data set of Meteosat Second Generation SEVIRI, whereby a distinction between fog and low stratus is hardly feasible using remote sensing data. The FLS frequency was studied with respect to its interaction with distinct locally-generated wind and its dependence on the planetary boundary layer height (PBLH) obtained by ERA5 reanalysis (the fifth generation of the European Centre for Medium-Range Weather Forecasts, ECMWF). Results show that radiation FLS is formed in coastal areas at sunrise, with low PBLH. On the other hand, in the interior of the island at sunset, a maximum of advection FLS is formed, fostered by locally-generated and related transport of moisture. On the east side of the island, FLS frequency is lower throughout the year due to frequent lee situations. This situation is reinforced by reduced synoptic moisture transport by westerly winds, so that westerly exposed slopes benefit from moisture input by FLS formation. KW - Corsica KW - Mediterranean KW - Fog Low Stratus KW - Meteosat Second Generation (MSG) KW - Planetary Boundary Layer KW - Locally-generated wind Y1 - 2021 U6 - https://doi.org/10.1016/j.atmosres.2021.105731 SN - 0169-8095 VL - 261 ER - TY - GEN A1 - Lützner, Jörg A1 - Deckert, Stefanie A1 - Lange, Toni A1 - Postler, Anne Elisabeth A1 - Aringer, Martin A1 - Berth, Hendrik A1 - Bork, Hartmut A1 - Dreinhöfer, Karsten E A1 - Günther, Klaus-Peter A1 - Heller, Karl-Dieter A1 - Hube, Robert A1 - Kirschner, Stephan A1 - Kladny, Bernd A1 - Kopkow, Christian A1 - Sabatowski, Rainer A1 - Stoeve, Johannes A1 - Wagner, Richard A1 - Lützner, Cornelia T1 - Evidenzbasierte und patientenorientierte Indikationsstellung zur Knieendoprothese – Update der Leitlinie T2 - Zeitschrift für Orthopädie und Unfallchirurgie N2 - ZusammenfassungDie Implantation einer Knieendoprothese zählt mit ca. 170000 Eingriffen pro Jahr zu den am häufigsten stationär durchgeführten Operationen in Deutschland. Eine einheitliche, angemessene und patientenorientierte ärztliche Indikationsstellung ist bei einem solchen Eingriff unerlässlich. Das Update der S2k-Leitlinie „Indikation Knieendoprothese“ beinhaltet auf aktueller Evidenz basierende und im breiten Konsens abgestimmte Empfehlungen und eine Checkliste im praxistauglichen Format.Für dieses Leitlinien-Update wurde eine systematische Literaturrecherche nach (inter-)nationalen Leitlinien und systematischen Übersichtsarbeiten zur Gonarthrose und Knieendoprothetik durchgeführt, um klinisch relevante Fragestellungen zu Diagnostik, Prädiktoren für das Outcome, Risikofaktoren und Kontraindikatoren zu beantworten.Eine Knieendoprothese soll nur bei radiologisch nachgewiesener fortgeschrittener Gonarthrose (Kellgren-Lawrence-Grad 3 oder 4), nach vorangegangener konservativer Therapie über mindestens 3 Monate sowie bei hohem subjektivem Leidensdruck hinsichtlich der kniebezogenen Beschwerden und nach Ausschluss möglicher Kontraindikationen (Infektionen, Begleiterkrankungen, BMI ≥ 40 kg/m2) erfolgen. Modifizierbare Risikofaktoren (wie Rauchen, Diabetes mellitus, Anämie) sollen zuvor adressiert und ggf. optimiert werden. Die Ziele der Patient*innen sollen erfragt und deren Eintrittswahrscheinlichkeit gemeinsam besprochen werden. Schließlich ist die Entscheidung zur Knieendoprothese von Patient*in und Operateur*in gemeinsam zu treffen, wenn der zu erwartende Nutzen die möglichen Risiken überwiegt.Das Update der S2k-Leitlinie wurde um die unikondyläre Knieendoprothese erweitert, die präoperative Optimierung modifizierbarer Risikofaktoren ergänzt sowie Konkretisierungen der Hauptindikationskriterien vorgenommen. Y1 - 2024 U6 - https://doi.org/10.1055/a-2288-7254 SN - 1864-6697 PB - Georg Thieme Verlag KG ER - TY - GEN A1 - Lützner, Jörg A1 - Lange, Toni A1 - Schmitt, Jochen A1 - Kopkow, Christian A1 - Dreinhöfer, Karsten E A1 - Friederich, Niklaus F. A1 - Gravius, Sascha A1 - Heller, Karl-Dieter A1 - Hube, Robert A1 - Gromnica-Ihle, Erika A1 - Kirschner, Stephan A1 - Kladny, Bernd A1 - Kremer, Michael A1 - Linke, Maike A1 - Malzahn, Jürgen A1 - Sabatowski, Rainer A1 - Scharf, Hanns-Peter A1 - Stöve, Johannes A1 - Wagner, Richard A1 - Günther, Klaus-Peter T1 - [The S2k guideline: Indications for knee endoprosthesis : Evidence and consent-based indications for total knee arthroplasty] T2 - Der Orthopäde Y1 - 2018 U6 - https://doi.org/10.1007/s00132-018-3612-x SN - 1433-0431 SN - 0085-4530 VL - 47 IS - 9 SP - 777 EP - 781 ER -