A5035695025- earthquake and tectonic studies
- Plant tissue culture and regeneration
- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Transgenic Plants and Applications
- High-pressure geophysics and materials
- Earthquake Detection and Analysis
- Seismic Imaging and Inversion Techniques
- Metallurgy and Material Forming
- Plant Genetic and Mutation Studies
- Metal Forming Simulation Techniques
- Chromosomal and Genetic Variations
- Plant Reproductive Biology
- CRISPR and Genetic Engineering
- Rock Mechanics and Modeling
- Tropical and Extratropical Cyclones Research
- Geological and Geochemical Analysis
- Aluminum Alloys Composites Properties
- Landslides and related hazards
- Geochemistry and Geologic Mapping
- Genetically Modified Organisms Research
- Methane Hydrates and Related Phenomena
- Ocean Waves and Remote Sensing
- Wheat and Barley Genetics and Pathology
- Engineering and Materials Science Studies
Praxis
2024
GFZ Helmholtz Centre for Geosciences
2004-2024
Universität Hamburg
2012-2023
Freie Universität Berlin
2010-2023
University of Potsdam
2023
Spital Uster
2022
Czech Academy of Sciences, Institute of Geophysics
2021
Software (Spain)
2018-2019
TU Dortmund University
2006-2015
Society for Chemical Engineering and Biotechnology
2008-2011
A reproducible transformation system for hexaploid wheat was developed based on particle bombardment of scutellar tissue immature embryos. Particle carried out using a PDS 1000/He gun. Plant material bombarded with the plasmid pDB1 containing β‐glucuronidase gene ( uidA ) under control actin‐1 promoter rice, and selectable marker bar (phosphinothricin acetyltransferase) CaMV 35S promoter. Selection herbicide Basta (Glufosinate‐ammonium). From total number 1050 embryos, in seven independent...
Summary A novel genetic transformation method for barley ( Hordeum vulgare L.), based on infection of androgenetic pollen cultures with Agrobacterium tumefaciens , is presented. Winter‐type cv. ‘Igri’ was amenable to stable integration transgenes mediated by A. strain LBA4404 harbouring a vector system that confers hypervirulence, or the non‐hypervirulent GV3101 standard binary vector. The efficacy gene transfer substantially influenced pre‐culture time, choice and system, population...
This article for the first time demonstrates successful application of electrochemical processes to stimulate sequential reductive/oxidative microbial degradation perchloroethene (PCE) in mineral medium and contaminated groundwater. In a flow-through column system, hydrogen generation at cathode supported reductive dechlorination PCE cis-dichloroethene (cDCE), vinyl chloride (VC), ethene (ETH). Electrolytically generated oxygen anode allowed subsequent oxidative lower chlorinated...
Short term prediction of earthquake magnitude, time, and location is currently not possible. In some cases, however, documented observations have been retrospectively considered as precursory. Here we present seismicity transients starting approx. 8 months before the 2023 MW 7.8 Kahramanmaraş on East Anatolian Fault Zone. Seismicity composed isolated spatio-temporal clusters within 65 km future epicentre, displaying non-Poissonian inter-event time statistics, magnitude correlations low...
Transgenic cereal plants expressing the beta-glucuronidase (uidA) and neomycin phosphotransferase (neo) genes were obtained via microprojectile bombardment of immature inflorescence tissue tritordeum (the fertile Hordeum x Triticum amphiploid, HchHchAABB). A total 17 independent transgenic recovered from 32 bombardments (on average four inflorescences per shot). Of culture parameters tested, explant preculture had most influence on stable transformation frequency. The uidA neo supplied two...
Abstract Short term prediction of the magnitude, time, and location earthquakes is currently not possible. In some cases, however, behaviour has been documented that retrospectively considered as precursory. Some models hold on a timescale several years, increasing levels background seismic activity may signify enhanced damage generation affecting broader area in lead up to future earthquake. Localization seismicity and/or aseismic deformation towards single fault or multiple branches these...
Seismic waves from distant earthquakes are known to trigger and slow slip events on active faults. However, the underlying physics of such interaction is poorly understood. Dynamic rearrangement grains in a granular medium, pore pressure changes within that same gouge or response frictional interface have been proposed explain triggering. The main issue lack observations at various scales triggered event nature, seconds years local meter-scale full-scale image induced fault.We use data dense...
Ambient seismic noise has the potential to significantly reduce detection capabilities of planned next generation gravitational wave detector (so-called Einstein telescope). The field impacts performance either directly by transferring movements into system or indirectly changes attraction surrounding rockmass due spatio-temporal density caused waves Newtonian noise). In order find best geometries for placement subsurface chambers, allow active suppresion vibrations and estimate influence...
Abstract The island of Crete represents a horst structure located in the central forearc retreating Hellenic subduction zone. and dynamics plate boundary area are investigated by receiver function, surface wave microseismicity using temporary seismic networks. Here results summarized implications for geodynamic models discussed. oceanic Moho subducted African is situated at depth about 50–60 km beneath Crete. continental crust overriding Aegean lithosphere 35 thick eastern Crete, typical...
Abstract Strain energy from tectonic loading can be partly released through aseismic creep. Earthquake repeaters, repeatedly activated brittle fault patches surrounded by creep, indicate steady‐state creep that affects the amount of seismic available for next large earthquake along a plate contact. The offshore Main Marmara Fault (MMF) North Anatolian Zone represents gap capable generating M > 7 in direct vicinity to mega‐city Istanbul. Based on newly compiled seismicity catalog, we...
ABSTRACT Earthquake source parameters provide key diagnostic observations to quantify the seismogenic environment and understand earthquake physics. Among them, stress drop plays an essential role in impacting frequency content of ground motion. Accurate stress-drop estimation is conditioned on data quality, appropriate modeling propagation effects, selection model inversion techniques. One way evaluate reliability assessments compare results combining different methodologies assumptions. In...