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On the trail of iron uptake in ancestral Cyanobacteria on early Earth
(Geobiology, 2022-07-30)Cyanobacteria oxygenated Earth's atmosphere ~2.4 billion years ago, during the Great Oxygenation Event (GOE), through oxygenic photosynthesis. Their high iron requirement was presumably met by high levels of Fe(II) in the ... -
On the treatment of the geodetic boundary value problem by means of regular gravity space formulations - proof of concept based on numerical closed loop simulations
(Univ. Stuttgart, 2009)The aim of this thesis is to present an alternative for the solution of a fundamental problem of geodesy. This problem, the so-called classical geodetic boundary value problem, comprises the determination of the figure of ... -
On the validity of specific rate constants (kSA) in Fe0/H2O systems
(Journal of hazardous materials, 2009)The validity of the specific reaction rate constants (kSA) in modelling contaminant removal in Fe0/H2O systems is questioned. It is shown that the current kSA-model does not consider the large reactive surface area provided ... -
On the Validity of Specific Rate Constants (kSA) in Fe0/H2O Systems
(Journal of Hazardous Materials, 2008)The validity of the specific reaction rate constants (k(SA)) in modelling contaminant removal in Fe-0/H2O systems is questioned. It is shown that the current k(SA)-model does not consider the large reactive surface area ... -
On Timescales and Reversibility of the Ocean's Response to Enhanced Greenland Ice Sheet Melting in Comprehensive Climate Models
(Geophysical Research Letters, 2022-03-01)Warming of the North Atlantic region in climate history often was associated with massive melting of the Greenland Ice Sheet. To identify the meltwater's impacts and isolate these from internal variability and other global ... -
On-the-Fly Calculation of Absorbed and Equivalent Atmospheric Radiation Dose in A Water Phantom with the Atmospheric Radiation Interaction Simulator (AtRIS)
(Journal of Geophysical Research: Space Physics, 2019)Computation of the ionization and radiation dose in arbitrary (exo-) planetary atmospheres due to energetic particles is recently becoming more important due to several reasons that are either correlated with the detection ... -
One Geoscience: Providing FAIR global Access to all Geoscience Data -are we there yet? - Plenary keynote
(2023)Geoscience deals with all fields of natural science related to understanding past, current and future states of the Earth and the terrestrial bodies. Geoscience has many sub-disciplines that have strong roots in other ... -
One Hundred Thousand Years of Geomagnetic Field Evolution
(Reviews of Geophysics, 2019)Paleomagnetic records from sediments, archeological artifacts, and lava flows provide the foundation for studying geomagnetic field changes over 0–100 ka. Late Quaternary time-varying spherical harmonic models for 0–100 ka ... -
One Step at a Time: How Model Time Step Significantly Affects Convection-Permitting Simulations
(Journal of Advances in Modeling Earth Systems, 2019)We show that there is a strong sensitivity of cloud microphysics to model time step in idealized convection-permitting simulations using the COnsortium for Small-scale MOdeling model. Specifically, we found a 53% reduction ... -
One-Pot Synthesis of Xanthate-Functionalized Cellulose for the Detection of Micromolar Copper(II) and Nickel(II) Ions
(CLEAN – Soil, Air, Water, 2019)A one-pot synthesis and application of cellulose-based sensors to efficiently detect various toxic metal ions in aqueous solutions in micromolar quantities is reported. Cellulose microfibers have been functionalized with ... -
One‐Pot Synthesis of Xanthate‐Functionalized Cellulose for the Detection of Micromolar Copper(II) and Nickel(II) Ions
(CLEAN – Soil, Air, Water, 2019-09-23)A one‐pot synthesis and application of cellulose‐based sensors to efficiently detect various toxic metal ions in aqueous solutions in micromolar quantities is reported. Cellulose microfibers have been functionalized with ... -
Online flood forecasting in fast responding catchments on the basis of a synthesis of artificial neural networks and process models
(Univ. Dresden, 2007)A detailed and comprehensive description of the state of the art in the field of flood forecasting opens this work. Advantages and shortcomings of currently available methods are identified and discussed. Amongst others, ... -
On‐site non‐destructive determination of the remanent magnetization of archaeological finds using field magnetometers
(Archaeological Prospection, 2021-09-30)The determination of the natural remanent magnetization (NRM) of archaeological features can be used for magnetic modelling, joining of shards, archaeomagnetic dating or the investigation of the firing–cooling–collapsing ... -
Open Access für wissenschaftliche Texte / Publikation von Forschungsdaten
(2020)Open Access für wissenschaftliche Texte / Publikation von Forschungsdaten. Online Workshop, Bundesfachschaftentagung Aachen (10.11.2020) Dieser Workshop hat zwei Schwerpunkte: im ersten Teil geht es um Open Access von ... -
Open Access-Publikationen von Texten und Karten über den FID GEO: Fallbeispiel „Zeitschrift für Geophysik“ der DGG
(2018)Der Fachinformationsdienst Geowissenschaften der festen Erde (FID GEO) verfolgt mit finanzieller Unterstützung der Deutschen Forschungsgemeinschaft (DFG) das Ziel die digitale Transformation und den freien Zugang zu ... -
Open Science – more than Open Access
(2022)The Berlin Declaration from 2003 was the starting point for Open Access to scholarly publications. Today, however, we speak about Open Science that reaches far beyond Open Access and represents collaborative, transparent ... -
Open-Access-Veröffentlichungen in den Geowissenschaft - rechtliche Fragestellungen
(2021)Der Fachinformationsdienst Geowissenschaften (FID GEO) veranstaltete zusammen mit der geowissenschaftlichen Bibliothek des Geologisches Instituts (GIA) der RWTH Aachen, einen Workshop zu den rechtlichen Fragen der ... -
Open-Science-Angebote des FID GEO
(2022)Als DFG-geförderter Service der Niedersächsischen Staats- und Universitätsbibliothek Göttingen (SUB) und des Deutschen GeoForschungsZentrums GFZ unterstützt der Fachinformationsdienst Geowissenschaften (FID GEO) den ... -
Operation and Cost Analysis of a Partly Mechanized Small Scale Gold Mine in Ghana
(2013-09-02)The economically successful operation of partly mechanized small scale mines in Ghana could fill the gap between large scale, industrial and foreign controlled mining operations and the artisanal (or "galamsey") small scale ... -
Operator-splitting methods for wave-equations
(Humboldt-Univ., Berlin2007)The motivation to our studies came from simulation of earth-quakes, that are modeled with elastic wave equations. In our paper we focus on the study of the stiff problems for the wave-equations. Due to this contribution ...