93 Works

Telecentric bright-field transmitted light microscopic dataset

Ali Ghaznavi, Renata Rychtáriková, Mohammadmehdi Saberioon & Dalibor Štys
Living cell segmentation from bright-field light microscopic images is challenging due to the image complexity and temporal changes in the living cells. Recently developed deep learning (DL)-based methods became popular in medical and microscopic image segmentation tasks due to their success and promising outcomes. The main objective of this paper is to develop a deep learning, UNet-based method to segment the living cells of the HeLa line in bright-field transmitted light microscopy. To find the...

Inverse geochemical modelling demonstrates how weathering and ion surface exchange control groundwater chemistry in the Pra Basin (Ghana)

Evans Manu , Michael Kühn , Thomas Kempka & Marco De Lucia
Effective implementation of sustainable water resources management is one of the daunting tasks in most parts of the world. The Pra Basin has a high economic importance, hosting most of Ghana’s mineral resources, including gold, bauxite, iron, manganese, and diamonds. Currently, the basin is faced with several water resources management issues, especially pollution arising from the discharge of untreated waste into water bodies and illegal artisanal mining. Considering this background, the present study aims to...

Helmholtz Open Science Briefing. Helmholtz Open Science Forum Forschungssoftware. Report

Heinz Pampel, Nina Leonie Weisweiler, Roland Bertelmann, Wolfgang zu Castell, Suenje Dallmeier-Tiessen, Ronny Gey, Tobias Huste, Nicole Jung, Amir Kalali , Uwe Konrad, Christian Meeßen, Sebastian Müller, Dennis Oliveira & Tobias Schlauch
Das Helmholtz Forum Forschungssoftware, welches gemeinsam von der Task Group Forschungssoftware des AK Open Science und dem HIFIS Software Cluster getragen wird, veranstaltete am 7. April 2022 ein Helmholtz Open Science Forum zum Thema Forschungssoftware. Die Veranstaltung wurde vom Helmholtz Open Science Office organisiert. Das virtuelle Forum widmete sich drei Aspekten beim offenen und nachhaltigen Umgang mit Forschungssoftware in der Helmholtz-Gemeinschaft: Policy, Praxis sowie Infrastrukturen und Tools. Die Veranstaltung war die zweite einer Reihe von...

Revised and improved geological model of the Waiwera geothermal reservoir, New Zealand

Andreas Grafe , Thomas Kempka , Michael Schneider & Michael Kühn
Following a thermal and photogrammetric outcrop mapping campaign undertaken at the Waiwera geothermal reservoir in 2019, a pre-existing 3D hydrogeological model was revised in the present study to assess the impact of the updated structural and lithological interpretation on the existing numerical model calibration. For the latter, well data comprising measured temperature and salinity profiles were employed to reconstruct the reservoir’s natural thermal state and spatial distribution of salinity, supported by numerical simulations of density-driven...

Passende Satellitendaten finden – Das Datenportal CODE-DE

Antonia Cozacu, Helga Kuechly, Claudia Vallentin, Seraphine Luneau, Clara Nicolai & Nora Meyer zu Erpen
Das Datenportal CODE-DE ist eine zentrale Anlaufstelle für Copernicusdaten in Deutschland. Kostenlos und auf deutscher Sprache wird den Nutzenden auf verschiedenen Wegen der Zugriff auf Satellitendaten ermöglicht. Im dritten Dokument aus der Reihe SAPIENS: Satellitendaten für Planung, Industrie, Energiewirtschaft und Naturschutz zeigen wir, wie man mit dem EO Browser und EO Finder von CODE-DE die passenden Satellitendaten suchen, finden, visualisieren und herunterladen kann.

Simulation study of hydrate formation from dissolved methane in the LArge-scale Reservoir Simulator (LARS)

Zhen Li , Thomas Kempka , Erik Spangenberg & Judith Schicks
Hydrate formation from dissolved methane in saline solutions is a hydrochemical process, resulting in the accumulation of gas hydrates in sedimentary strata under the seafloor or overlain by permafrost regions. In the scope of the SUGAR framework, LARS has been established to study gas hydrate formation processes and dissociation strategies under in-situ conditions. In the latest hydrate formation experiments, key parameters have been applied to mimic the local marine environment of the Mallik site, Canada....

Modelle simulieren die Zukunft

Michael Kühn, Theresa Hennig, Oliver Heidbach & Magdalena Scheck-Wenderoth
Modelle und Simulationen erlauben eine Prognose, wie sich Prozesse in der Geosphäre unter Berücksichtigung der physikalischen und chemischen Gesetzmäßigkeiten in der Zukunft entwickeln. Sie sind die Grundlage, um Entwicklungsszenarien zu prüfen und darüber praktikable Entscheidungen treffen zu können. Nur so ist z. B. eine Quantifizierung potenzieller Radionuklidmigration im hydrogeologischen System des einschlusswirksamen Gebirgsbereichs und damit eine Bewertung des Rückhaltevermögens eines Endlagers für eine Million Jahre möglich.

Acceleration of electrons by whistler-mode hiss waves at Saturn

Emma E. Woodfield, Sarah A. Glauert, J. Douglas Menietti, Richard B. Horne, Andrew J. Kavanagh & Yuri Y. Shprits
Radiation belts are hazardous regions found around several of the planets in our Solar System. They consist of very hot, electrically charged particles that are trapped in the magnetic field of the planet. At Saturn the most important way to heat these particles has for many years been thought to involve the particles drifting closer towards the planet. This paper builds on previous work on the emerging idea at Saturn that a different way to...

Helmholtz Open Science Briefing: Zweites Helmholtz Open Science Forum \"Helmholtz in der Nationalen Forschungsdateninfrastruktur (NFDI)\": Report

Nina Leonie Weisweiler, Roland Bertelmann, Constanze Curdt, Frank Oliver Glöckner, Uwe Jandt, Achim Streit, York Sure-Vetter & Nicolas Villacorta
Zur Förderung des Dialogs zur NFDI in der Helmholtz-Gemeinschaft veranstaltete das Helmholtz Open Science Office am 8. Dezember 2021 ein zweites virtuelles Helmholtz Open Science Forum unter dem Motto „Helmholtz in der Nationalen Forschungsdateninfrastruktur (NFDI)“. Alle Mitarbeitenden der Helmholtz-Gemeinschaft waren eingeladen, sich an dem zentrenübergreifenden Austausch zu beteiligen. Aufbauend auf das erste Forum im Mai 2021 lag der Schwerpunkt der Veranstaltung auf der Identifikation und Diskussion von Helmholtzspezifischen Themen und Aktivitäten bei der Realisierung der...

The Helmholtz Research Field Earth & Environment DataHub and its NFDI4Earth connection

Peter Braesicke , Roland Bertelmann , Jan Bumberger & Sören Lorenz
Digitalisation and FAIR data are overarching elements in the Helmholtz Research Field Earth and Environment (RF E&E) Program-Oriented Funding Phase IV (PoF IV). Already in the transition years from PoF III to PoF IV (2019/2020) different measures were implemented to facilitate this aim. One of them is the so-called DataHub, with the aim that all Earth System (ES) data that is generated by the RF E&E will be available as FAIR data via a common...

Cermak7 - 7th International Meeting on Heat Flow and the Thermal Structure of the Lithosphere, 20-22 June 2022, Potsdam, Germany

Sven Fuchs, Ben Norden & Angela Spalek

The impact of hydrothermal alteration on the physiochemical characteristics of reservoir rocks: the case of the Los Humeros geothermal field (Mexico)

Leandra M. Weydt, Federico Lucci, Alicja Lacinska, Dirk Scheuvens, Gerardo Carrasco-Núñez, Guido Giordano, Christopher A. Rochelle, Stefanie Schmidt, Kristian Bär & Ingo Sass
Abstract Hydrothermal alteration is a common process in active geothermal systems and can significantly change the physiochemical properties of rocks. To improve reservoir assessment and modeling of high-temperature geothermal resources linked to active volcanic settings, a detailed understanding of the reservoir is needed. The Los Humeros Volcanic Complex, hosting the third largest exploited geothermal field in Mexico, represents a natural laboratory to investigate the impact of hydrothermal processes on the rock properties through andesitic reservoir...

Helmholtz Open Science Forum: Publikationskostenmanagement. Helmholtz Open Science Briefing. (Version 1.0)

Lea Maria Ferguson, Irene Barbers, Christoph Bruch, Roland Bertelmann, Marcel Meistring, Michael Normann, Diana Otto, Heinz Pampel, Antonia Schrader, Paul Schultze-Motel, LIsa-Marie Stein & Nina Leonie Weisweiler
Am 14. September 2022 veranstaltete das Helmholtz Open Science Office ein Helmholtz Open Science Forum zum Thema Publikationskostenmanagement. Die virtuelle Veranstaltung widmete sich den Herausforderungen der Erfassung und Analyse von Publikationen und Kosten im Kontext der Open-Access-Transformation. Gemeinsam mit den Referent:innen und rund 50 Teilnehmenden aus Helmholtz wurden Strategien und Praktiken der Helmholtz-Zentren und ihrer Bibliotheken in diesem Handlungsfeld beleuchtet. Der vorliegende Bericht dokumentiert die Veranstaltung.

Model Policy on Sustainable Software at the Helmholtz Centers

Felix Bach, Oliver Bertuch, C. Busse, Wolfgang zu Castell, S. Celo, M. Denker, S. Dinkelacker, Stephan Druskat, C. Faber, A. Finke, B. Fritzsch, Martin Hammitzsch, J. Haseleu, U. Konrad, J. Krupa, Y. Leifels, K. Mohns-Pöschke, M. Moravcikova, J. Nöller, C. Möhl, M. Nolden, M. Scheinert, U. Schelhaas, Kaja Scheliga, T. Schlauch … & D. Wortmann
The Model Policy was drawn up by the Research Software Task Group with the assistance of other experts from the Helmholtz Association and was agreed with the Technology Transfer and Commercial Legal Protection Working Group and the Legal Affairs Working Group. The present version was adopted by the Open Science Working Group on November 21, 2019.

Zugang zu und Nachnutzung von wissenschaftlicher Software – Positionspapier des Arbeitskreises Open Science der Helmholtz-Gemeinschaft

Dieses Positionspapier wurde von der Task Group „Zugang zu und Nachnutzung von wissenschaftlicher Software“ des Arbeitskreises Open Science der Helmholtz-Gemeinschaft erarbeitet und vom Arbeitskreis Open Science am 14.03.2017 verabschiedet.

Open Science Factsheet No. 7 based on the 62nd online seminar: The IPCC FAIR Guidelines from the perspective of the IPCC Data Distribution Centre (DDC)

Martina Stockhause, Lea Maria Ferguson, Antonia Schrader & Nina Leonie Weisweiler

About the influence of a possible relative rotation of the earth's inner core on the polar motion, the geomagnetic field and the gravity field

Hans Greiner-Mai, Horst Jochmann & Franz Barthelmes

Open Science Factsheet No. 8 based on the 63rd online seminar: The Charité Dashboard on Responsible and Open Research

Nico Riedel, Lea Maria Ferguson, Antonia Schrader & Nina Leonie Weisweiler

Hipercorig Hallstatt History (H3): Accessign a deep time window of Lake Hallstatt´s preHistory

Michael Strasser, Flavio Anselmetti, Achim Brauer, Stefano Fabbri, Ulrich Harms & Kerstin Kowarik

Si isotope thermometry in silicified carbonate

Michael Tatzel , Marcus Oelze , Moritz Liesegang , Maria Stuff & Michael Wiedenbeck
Cherts, including silicified carbonates, are one of the most detailed and alteration resistant archives of near-surface environments. Yet, the information disclosed in form of stable isotope ratios of Si and O cannot be confidently translated into conditions prevailing at the Earth surface in deep time. Thermometry based on δ18O is compromised by the lack of knowledge about the fluid’s δ18O value and attempts to determine Si sources or temperatures from δ30Si remain unsatisfying. We investigated...

Stromatolitic microorganisms in and on top of fluid-escape structures of the 3.2 Ga Moodies Group

Sebastian Reimann , Christoph Heubeck , Martin Homann , Deon Johannes Janse van Rensburg & Michael Wiedenbeck
The global record of early life is only poorly preserved, but has an ark in the 3.2 Ga Moodies Group of the Barberton Greenstone Belt, South Africa and Eswatini. It preserves silicified photosynthetic and sulfate-reducing metabolic signatures in sandstone-dominated, terrestrial to shallow-marine strata. Large fluid-escape structures are common in thick-bedded kerogen-laminated sandstones of (sub-)tidal facies. We document and interpret silicified, massive and laminated carbonate aggregates and beds, both of likely microbial origin, within and on...

Sandbox – Creating and Analysing Synthetic Sediment Sections with R

Michael Dietze , Sebastian Kreutzer & Margret C. Fuchs
Geoscientific concepts and hypotheses are usually formulated based on empirical data from the field or the laboratory (induction). After translation into models they can be applied to case study scenarios (deduction). However, the other way around – expressing hypotheses explicitly by models and test these by empiric data – is a rarely touched trail. There are several models tailored to investigate the boundary conditions and processes that generate, mobilise, route and eventually deposit sediment in...

Curating data and samples in the long-tail - tools and examples from GFZ Data Services

Kirsten Elger & Florian Ott
GFZ Data Services, an international research data repository for the Earth sciences domain and Allocating Agent for the IGSN Global Sample Number (IGSN), is operated under the umbrella of the GFZ German Research Centre for Geosciences. GFZ Data Services increases the discoverability and reusability of data through (1) the provision of comprehensive domain-specific data description via standardised and machine-readable metadata with controlled domain vocabularies; (2) complementing the metadata with comprehensive and standardised technical data descriptions...

Quantifying carbonate denudation from cosmogenic 36Cl and climatic and tectonic controls on carbonate landscape evolution

Richard F Ott , Sean F Gallen & David Helman
Department of Earth Sciences, ETH Zurich, Zurich, Switzerland(1);Earth Surface Geochemistry, German Centre for Geoscience Research, Potsdam, Germany(2);Department of Geosciences, Colorado State University, Fort Collins, US(3);Department of Soil and Water Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel(4);Advanced School for Environmental Studies, The Hebrew University of Jerusalem, Jerusalem, Israel(5);Quantifying carbonate denudation and the partitioning between chemical and mechanical surface lowering in karstic areas is challenging. Here...

Authority, Identity and Ethics of Data Re-publication and Duplication

Lesley Wyborn , Kirsten Elger , Jens Klump , Kerstin Lehnert & Mingfang Wu
Today, research data is widely available in digital form, datasets are easily accessible online and the dataset creator should consider it advantageous as this leads to greater uptake. However, the downside is that digital datasets can be easily copied, duplicated in multiple places, and re-published through more than one repository or service. Particularly with web services, mirroring resources is a common practice, especially in online GIS packages and dashboards. ‘Copy WMS link’ buttons are common,...

Registration Year

  • 2022
    93

Resource Types

  • Text
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    6
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    4
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    3
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Affiliations

  • Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
    92
  • Helmholtz Association of German Research Centres
    16
  • University of Potsdam
    12
  • Karlsruhe Institute of Technology
    9
  • Freie Universität Berlin
    7
  • Helmholtz Centre for Environmental Research
    6
  • Forschungszentrum Jülich
    5
  • Deutsches Elektronen-Synchrotron DESY
    4
  • National Autonomous University of Mexico
    4
  • University of Foggia
    4