25 Works

Technical requirements in public auctions to make solar plants shine

Adela Marian, Florian Anselm Münch, Elena Ammel, Niels Ferdinand, Saurabh Kumar, Asier Ukar, Maialen López, Knut Blind & Rainer Quitzow
The deployment of solar photovoltaic (PV) technology is accelerating across the globe, as prices continue to fall and countries begin their transition from fossil to renewable energy. Public auctions have become the dominant policy tool for solar PV deployment: 106 countries held renewable energy auctions (dominated by solar) by the end of 2018 (IRENA a, 2019). One third of the 55 countries that held renewable auctions in 2017 – 2018 did so for the first time (ibid.)....

Paleoclimate reconstruction using Pleistocene paleosols along the middle Atbara River in Eastern Sudan

M. Mohammednoor, Robert Bussert , S. Tsukamoto , M. Richter , O. El Bedri , B. Kraatz , K. Salih , J. Müller , A. Eisawi & F. Bibi
Along the middle Atbara River, Pleistocene alluvial sediments dated to ~200 to 20 ka are exposed in eastern Sudan over a length of about 200 km with a maximum thickness of 50 m. The Atbara River today has its headwaters in the northern Ethiopian Plateau and is the last major tributary of the Nile before it flows through the Sahara. Previous studies and our fieldwork since 2018 have resulted in extensive finds of fossil terrestrial...

Heterogene Ausbreitungsdynamik in Deutschland während der zweiten Welle der COVID-19-Pandemie: Zusammenhang mit Maßnahmen des öffentlichen Gesundheitswesens

Andreas Schuppert, Katja Polotzek, Jochen Schmitt, Reinhard Busse, Jens Karschau & Christian Karagiannidis
Hintergrund: Die zweite Welle der COVID-19-Pandemie führte zu erheblichen Unterschieden in den Inzidenzraten in Deutschland. Methoden: Ein annahmefreies k-nearest neighbour (kNN; auf Deutsch „k-nächste Nachbarn“) Clusterverfahren auf Basis einer Hauptkomponentenanalyse der wöchentlichen Inzidenzraten deutscher Kreise findet Cluster ähnlichen Ausbreitungsverhaltens. Die unterschiedliche Ausbreitungsdynamik wurde anhand der Ableitungsdiagramme der zeitlichen Entwicklung der Tupel [x(t),x'(t)] der wöchentlichen Inzidenzraten und ihrer Ableitungen analysiert. Die Wirksamkeit der verschiedenen Lockdown-Maßnahmen in Deutschland während der zweiten Welle wird anhand der Differenz der...

How minerals govern the advance of weathering: comparison of a shallow and a deep weathering profile in different climatic zones (Chilean Coastal Cordillera)

Ferdinand Jakob Hampl , Ferry Schiperski , Nicole Stroncik , Michael Facklam , Friedhelm von Blanckenburg & Thomas Neumann
Weathering is the fundamental precondition for erosion and soil formation which sculpture Earth´s surface. It is a complex interplay of minerals, rock fabric, tectonical fractures, climate, and organic activity. To explore the dependences between these factors two weathering profiles on magmatic bedrock were compared using six-meter-deep soil pits and drill cores in both a humid and a Mediterranean climate regime of Chile. Detailed mineralogical and geochemical investigations of soil and saprolite were combined with spatially...

Additional file 1 of Determination of the phosphorus content in sewage sludge: comparison of different aqua regia digestion methods and ICP-OES, ICP-MS, and photometric determination

Theresa Constanze Sichler, Roland Becker, Andreas Sauer, Matthias Barjenbruch, Markus Ostermann & Christian Adam
Additional file 1: Table S1 Origin of the 15 investigated sewage sludges and sludge treatment at respective wastewater treatment plant (WWTP). Table S2 Characterization of the 15 investigated sewage sludges and HNO3 addition (for samples with more than 500 mg C on 3,000 mg according to EN 16174), contents related to dry matter. Table S3 Phosphorus recovery of certified reference materials (sewage sludges, Sigma-Aldrich, Laramie, USA). Averages (n=2) of respective measurement day related to fresh...

Additional file 1 of MEDICC2: whole-genome doubling aware copy-number phylogenies for cancer evolution

Tom L. Kaufmann, Marina Petkovic, Thomas B. K. Watkins, Emma C. Colliver, Sofya Laskina, Nisha Thapa, Darlan C. Minussi, Nicholas Navin, Charles Swanton, Peter Van Loo, Kerstin Haase, Maxime Tarabichi & Roland F. Schwarz
Additional file 1: Supplementary Figures S1-S23 and Supplementary Tables S1-S3.

Additional file 2 of MEDICC2: whole-genome doubling aware copy-number phylogenies for cancer evolution

Tom L. Kaufmann, Marina Petkovic, Thomas B. K. Watkins, Emma C. Colliver, Sofya Laskina, Nisha Thapa, Darlan C. Minussi, Nicholas Navin, Charles Swanton, Peter Van Loo, Kerstin Haase, Maxime Tarabichi & Roland F. Schwarz
Additional file 2. Peer review history.

A global review of carbonatite-hosted fluid inclusions and the role of fluid release on carbonatite magma ascent

Benjamin Florian Walter , Johannes Giebel , Matthew Steele-MacInnis , Michael Marks , Jochen Kolb & Gregor Markl
Carbonatites crystallize from mantle-derived carbonate- and volatile-rich melts that exsolve large amounts of fluids during their ascent through and emplacement into the crust. A global review of available fluid inclusion data for carbonatitic systems from variable emplacement depths identified four types of fluid inclusions: (type-I) vapour-poor H2O-NaCl fluids with <50 wt.% salinity; (type-II) vapour-rich H2O-NaCl-CO2 fluids with <5 wt.% salinity; (type-III) multi-component fluids with high salinity without CO2; and (type-IV) multi-component fluids with high salinity...

Nutzung von Patient-Reported Outcome Measures (PROMs) im deutschsprachigen Raum

Viktoria Steinbeck, Sophie-Christin Ernst, Michaela Burger & Christoph Pross
Wie werden patientenberichtete Gesundheitsdaten (PROMs) heute genutzt? Welche konkreten Hürden behindern die breitflächige Implementierung und welche Faktoren sind besonders förderlich? Dazu fand von Juli bis Dezember 2021 eine Online-Befragung unter PROM-Anwenderinnen und -Anwendern im deutschsprachigen Raum statt. Der vorliegende Ergebnisbericht „Nutzung von Patient-Reported Outcome Measures (PROMs) im deutschsprachigen Raum“ liefert interessante Erkenntnisse aus der Praxis und Ansatzpunkte für nächste Schritte auf dem Weg zu einer breiteren Implementierung von PROMs.

Tectonic and environmental perturbations at the Permian-Triassic boundary: insights from the Blue Nile River Basin in central Ethiopia

Maryam Mansouri , Matthias Hinderer , Laura Stutenbecker , Guido Meinhold , Enkurie L. Dawit , Jasper Berndt & Robert Bussert
The Blue Nile River Basin contains a thick fluvio-lacustrine sediment succession of Permian to Jurassic age. Its evolution is linked to extensional tectonics during break-up of Pangea in the aftermath of the Carboniferous-Permian glaciation. We collected sandstone samples from several sections in order to study the tectonic evolution and possible impacts of environmental perturbation around the Permian-Triassic boundary. Based on thin-section petrography, bulk-rock geochemistry, heavy mineral spectra, and detrital zircon U-Pb ages we are able...

Additional file 1 of Determination of the phosphorus content in sewage sludge: comparison of different aqua regia digestion methods and ICP-OES, ICP-MS, and photometric determination

Theresa Constanze Sichler, Roland Becker, Andreas Sauer, Matthias Barjenbruch, Markus Ostermann & Christian Adam
Additional file 1: Table S1 Origin of the 15 investigated sewage sludges and sludge treatment at respective wastewater treatment plant (WWTP). Table S2 Characterization of the 15 investigated sewage sludges and HNO3 addition (for samples with more than 500 mg C on 3,000 mg according to EN 16174), contents related to dry matter. Table S3 Phosphorus recovery of certified reference materials (sewage sludges, Sigma-Aldrich, Laramie, USA). Averages (n=2) of respective measurement day related to fresh...

Background analysis and details of evolutionary simulations from Social interaction can select for reduced ability

John M. McNamara & Max Wolf
Animals, including humans, differ in a wide range of physical and cognitive abilities ranging from measures of running speed and physical strength to learning ability and intelligence. We consider the evolution of ability when individuals interact pairwise over their contribution to a common good. In this interaction, the contribution of each is assumed to be the best given their own ability and the contribution of their partner. Since there is a tendency for individuals to...

Additional file 2 of MEDICC2: whole-genome doubling aware copy-number phylogenies for cancer evolution

Tom L. Kaufmann, Marina Petkovic, Thomas B. K. Watkins, Emma C. Colliver, Sofya Laskina, Nisha Thapa, Darlan C. Minussi, Nicholas Navin, Charles Swanton, Peter Van Loo, Kerstin Haase, Maxime Tarabichi & Roland F. Schwarz
Additional file 2. Peer review history.

Inverse modelling of transport distance to reduce ambiguities of microbial and chemical source tracking in karst catchments

Johannes Zirlewagen, Ferry Schiperski , Tobias Licha & Traugott Scheytt
The identification of contamination sources is vital for water protection, especially in highly vulnerable karst aquifers. Contamination sources might be distinguished by host-specific DNA markers of bacteria (Microbial Source Tracking, MST) or source-specific indicator compounds (Chemical Source Tracking, CST). These methods can help to identify a type of contamination source but fail to distinguish similar contaminant signals from different origins, e.g. multiple points of wastewater infiltration. Transport modelling can reduce these ambiguities by considering the...

Wall rock contamination and mineralogical modifications in carbonatite dykes of the Palabora Complex, South Africa

R. Johannes Giebel , Benjamin F. Walter , Michael A.W. Marks & Gregor Markl
Contamination of carbonatite melts is often neglected due to a fast magma ascent and low liquidus temperatures. However, increased silicate mineral formation observed in numerous carbonatite occurrences world-wide requires an external Si introduction. Our study demonstrates that carbonatite dykes penetrating different lithologies of Palabora (South Africa) shows different modes of mineralogical modification. In particular Al and Si-rich lithologies show the most significant effects. Besides silicate mineral formation Si introduction may cause directly and indirectly variations...

The Kieshöhe carbonatites in SW-Namibia – the role of silicatic xenoliths for REE exploration

Benjamin Florian Walter , R. Johannes Giebel , Alan Marlow , Michael Marks , Gregor Markl & Jochen Kolb
Exploration of carbonatite-associated REE-deposits is challenging due to heterogeneous ore distribution and variable and often complex ore mineralogy. The Kieshöhe carbonatite in SW Namibia represents a subvolcanic occurrence hosting dolomite, calcite and ankerite carbonatite dykes, ring dykes and diatremes. Petrography, whole rock geochemistry and microXRF imaging provide insights into the role of silicate xenoliths for the REE mineralization in a subvolcanic environment. Xenolith-rich carbonatites are relatively REE-poor with only minor monazite mineralization, whereas xenolith-free carbonatites...

Additional file 1 of MEDICC2: whole-genome doubling aware copy-number phylogenies for cancer evolution

Tom L. Kaufmann, Marina Petkovic, Thomas B. K. Watkins, Emma C. Colliver, Sofya Laskina, Nisha Thapa, Darlan C. Minussi, Nicholas Navin, Charles Swanton, Peter Van Loo, Kerstin Haase, Maxime Tarabichi & Roland F. Schwarz
Additional file 1: Supplementary Figures S1-S23 and Supplementary Tables S1-S3.

In-situ trace element and S isotope systematics in porphyry-epithermal pyrite, Limnos Island, Greece

Frederik Börner , Manuel Keith , Jonas Bücker , Panagiotis Voudouris , Karsten Haase , Reiner Klemd & Martin Kutzschbach
A more sustainable society with CO2 neutral energy production requires substantial amounts of trace metal(loids). However, our understanding about the fractionation processes of these elements between the epithermal and porphyry environment is still limited, but may be essential to secure the future supply of these rare commodities. The porphyry-epithermal mineralization on Limnos (Fakos, Sardes, Kaspakas) show variable Te and related element (e.g., Au, Ag) contents, and therefore represent a natural laboratory to define key fractionation...

Mutual effects of pH and ionic strength on the mobility of metoprolol in saturated quartz sand

Joshua Sawall & Ferry Schiperski
Emerging micropollutants such as lifestyle drugs, pesticides, and pharmaceuticals are increasingly detected in the aquatic environment. To counter possible threats posed by these pollutants, their transport behaviour needs to be thoroughly understood. In this study, 22 laboratory column transport experiments were conducted at selected pH and Na+ concentrations with natural quartz sand as sorbent to determine transport behaviour of the beta-blocker metoprolol (MTP, pKa=9.67) at various conditions. MTP breakthrough curves were measured at pH 3,...

The fate of crustal xenoliths in carbonatite dykes of the Gross Brukkaros, Namibia

Rebecca Ruwe , Johannes Giebel & Benjamin F. Walter
The Gross Brukkaros (Namibia) reflects a broad dome structure showing a crater-shaped depression with numerous peripheral beforsitic carbonatite dykes. These dykes frequently contain an extreme load of basement (Nama-group) xenoliths (> 60 vol.%) including shales, quartzites, granites and gneisses. While xenoliths of exposed country rocks (mainly shales) show an angular habit, a pronounced rounding of xenoliths from other lithologies proves a wide transport and strong abrasion. This consumption of xenolithic material may result in remarkable...

Background analysis and details of evolutionary simulations from Social interaction can select for reduced ability

John M. McNamara & Max Wolf
Animals, including humans, differ in a wide range of physical and cognitive abilities ranging from measures of running speed and physical strength to learning ability and intelligence. We consider the evolution of ability when individuals interact pairwise over their contribution to a common good. In this interaction, the contribution of each is assumed to be the best given their own ability and the contribution of their partner. Since there is a tendency for individuals to...

Comparison of high-resolution SIMS profiles with maximum resolution IRMS stable isotope data

Tobias Kluge , Philipp Holz , Elisabeth Eiche , Thomas Neumann , Alexander Land , Maximilian Schuh , Mario Trieloff & Axel K. Schmitt
High-resolution speleothem paleoclimate records with annual to seasonal resolution are helpful for detailed analysis of climatic changes with limited duration (e.g., volcanic climate impacts), but also for longer-duration events (e.g., at 8.2 ka or 4.2 ka). A high resolution paleoclimate data set is also mandatory for meaningful comparison with archaeological or historical records. Low stalagmite growth rates could impede the acquisition of high-resolution isotope data with the classical micro-milling approach and isotope ratio mass spectrometry...

The Pleistocene sediments of the Palaeoatbara in eastern Sudan as an archive for the evolution of the Nile river system

Robert Bussert , Mosab Mohammednoor , Faysal Bibi , Faysal Bibi , Sumiko Tsukamoto , Omar Bedri , Brian Kraatz , Ignacio Lazagabaster , Johannes Müller , Khalaf Salih & Ali Eisawi
Geological evidence and geodynamic modelling suggest that the Nile river system has been largely stable since its origins ~30 Ma. The Nile could have provided a long-term migration route for vertebrates including hominins between Eastern and Northern Africa. However, other geological data contradict such an old stabilisation of the course of the Nile. Fieldwork along the middle stretches of the Atbara River, the last tributary to the Nile before it crosses the Sahara, provides evidence...

Appendices from Developmental feedbacks and the emergence of individuality

Sean M. Ehlman, Ulrike Scherer & Max Wolf
Behavioural individuality is a hallmark of animal life, with major consequences for fitness, ecology, and evolution. One of the most widely invoked explanations for the source of this variation is that feedback loops between an animal's behaviour and its state (e.g. physiology, informational state, social rank, etc.) trigger and shape the development of individuality. Despite their often-cited importance, however, little is known about the ultimate causes of such feedbacks. Expanding on a previously employed model...

Appendices from Developmental feedbacks and the emergence of individuality

Sean M. Ehlman, Ulrike Scherer & Max Wolf
Behavioural individuality is a hallmark of animal life, with major consequences for fitness, ecology, and evolution. One of the most widely invoked explanations for the source of this variation is that feedback loops between an animal's behaviour and its state (e.g. physiology, informational state, social rank, etc.) trigger and shape the development of individuality. Despite their often-cited importance, however, little is known about the ultimate causes of such feedbacks. Expanding on a previously employed model...

Registration Year

  • 2022
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Resource Types

  • Text
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Affiliations

  • Technical University of Berlin
    24
  • Freie Universität Berlin
    5
  • Karlsruhe Institute of Technology
    5
  • Charité - University Medicine Berlin
    4
  • University of the Free State
    4
  • University of Cologne
    4
  • University College Hospital
    4
  • Humboldt-Universität zu Berlin
    4
  • Leibniz Institute of Freshwater Ecology and Inland Fisheries
    4
  • Université Libre de Bruxelles
    4