A5023274534- Nuclear physics research studies
- Nuclear Physics and Applications
- Hydrology and Watershed Management Studies
- Advanced NMR Techniques and Applications
- Atomic and Molecular Physics
- Soil and Unsaturated Flow
- Pesticide and Herbicide Environmental Studies
- Quantum Chromodynamics and Particle Interactions
- Advanced Chemical Physics Studies
- Groundwater flow and contamination studies
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Economic and Environmental Valuation
- Groundwater and Isotope Geochemistry
- Irrigation Practices and Water Management
- Water resources management and optimization
- Land Use and Ecosystem Services
- X-ray Spectroscopy and Fluorescence Analysis
- Quantum, superfluid, helium dynamics
- Electrical and Bioimpedance Tomography
- Pharmaceutical and Antibiotic Environmental Impacts
- Atomic and Subatomic Physics Research
- Phosphorus and nutrient management
- Weed Control and Herbicide Applications
- Urban Stormwater Management Solutions
Technical University of Munich
2022-2024
Forum Réfugiés - Cosi
2024
Southern University of Science and Technology
2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2023
Norsk Hydro (Germany)
2023
University of Cologne
2005-2011
Brookhaven National Laboratory
2011
Brookhaven College
2011
University of North Carolina at Chapel Hill
2007
Triangle Universities Nuclear Laboratory
2007
Abstract The accelerated growth of water demand globally calls for promising solutions in the field management. Managed aquifer recharge (MAR) systems are among that capable increasing supply and improving quality through natural attenuation processes. Along with hydrogeologic considerations institutional feasibility assessments, economic analysis is essential when evaluating MAR projects. This study first one to provide an assessment a scheme Poland by performing cost-benefit (CBA) combined...
We measured the cross sections and tensor analyzing powers of $^{1}\mathrm{H}$($\stackrel{\ensuremath{\rightarrow}}{d}$,$\mathit{pp}$)$n$ breakup reaction at ${E}_{d}=19$ MeV in four symmetric constant relative energy (SCRE) configurations. The data are compared with theoretical predictions from different approaches: first based on high-precision (semi)phenomenological potentials alone or, second, combined model three-nucleon forces, third chiral forces up to next-to-next-to-leading order...
Abstract Understanding transport and fate processes in the subsurface is of fundamental importance to identify leaching potentials herbicides or other compounds groundwater resources. HYDRUS‐1D was used simulate water flow solute arable land lysimeters. Simulations were compared observed drainage rates stable isotopes (δ 18 O) drainage. Four different model setups investigated statistically evaluated for their performance dominant characterization vadose zone under similar cultivation...
The catastrophic impact of Hurricane Dorian in September 2019 was unprecedented for the island Grand Bahama. Flooding western portion damaged pine ecosystems, inundated soil and groundwater with salt water, disrupted potable water service throughout island. More than two years post-Hurricane Dorian, freshwater lenses that relies on are still water. This collaborative paper summarizes all efforts researchers practitioners to evaluate lenses, as well their associated serve main source drinking...
Abstract This study investigates the contamination potential of herbicides to groundwater with help numerical modeling (HYDRUS‐1D) and stable carbon isotopes for characterizing biodegradation. Four herbicides, metolachlor, terbuthylazine, prosulfuron, nicosulfuron, were applied over a period 4.5 years on two lysimeters located in Wielenbach, Germany, monitored by lysimeter drainage. These contained soil cores dominated sandy gravel (Ly1) clayey silt (Ly2) both cropped maize ( Zea mays ). In...
An initially unpolarized beam of deuterons is found to acquire tensor polarization after traversing a foil spin-zero target nuclei. The effect, called nuclear spin dichroism, has been predicted theoretically, albeit resulting in small values ${p}_{zz}$ the order 0.01 for energies around 10 MeV. experiment was carried out at K\"oln tandem accelerator using carbon targets bombarded by deuterons. observed as large ${p}_{zz}=\ensuremath{-}0.28\ifmmode\pm\else\textpm\fi{}0.03$ 14.8 MeV and...
We measured the cross sections of $^{2}\mathrm{H}(p,\mathit{pp})n$ breakup reaction at ${E}_{p}=16\phantom{\rule{0.3em}{0ex}}\text{MeV}$ in three kinematical configurations: np final-state interaction (FSI), coplanar star (CST), and an intermediate-star (IST) geometry. The are compared with theoretical predictions based on CD Bonn potential alone combined updated 2\ensuremath{\pi}-exchange Tucson-Melbourne three-nucleon force (TM99'), calculated without inclusion Coulomb interaction....
We measured the polarization-transfer coefficient ${K}_{y}^{{y}^{'}}$ of fusion reaction $^{2}\mathrm{H}$($\stackrel{\ensuremath{\rightarrow}}{d},\stackrel{\ensuremath{\rightarrow}}{p}$ )$^{3}\mathrm{H}$ at E${}_{d}=58$ keV laboratory angle $\ensuremath{\theta}={45}^{\ifmmode^\circ\else\textdegree\fi{}}$. The result is compared with theoretical predictions based on Faddeev-Yakubovsky equations, calculated and without inclusion Coulomb interaction, a prediction T-matrix parametrization all...
The application of pesticides can induce severe impacts to the vadose zone, groundwater, and their ecosystems. A study was carried out on two lysimeters located in Wielenbach, Germany. Different soil textures were considered within cores, consisting sandy gravel clayey silt. vegetated with maize, four different herbicides applied according common agricultural practice. Over a period 4.5 years, concentrations selected metabolites monitored lysimeter drainage. In addition, stable carbon...
Abstract. A large storm surge caused by Hurricane Dorian in 2019 resulted extensive flooding and saltwater intrusion into the aquifers of island Grand Bahama. This about 40 % island's water supply to become brackish with no or slow recovery date damage more than 70 mangroves forests on Managed aquifer recharge (MAR) reforestation were considered nature-based solutions (NBS) mitigate impacts Dorian. First, a technical assessment MAR investigated (hydro)geological aspects. As result, potential...
Abstract. A large storm surge caused by Hurricane Dorian in 2019 resulted extensive flooding and saltwater intrusion into the aquifers of Grand Bahama Island. This 40 % island’s water supply to become brackish with no or slow recovery date damage more than 70 mangroves forests on Bahama. Managed aquifer recharge (MAR) reforestation were considered as nature-based solutions mitigate impacts Dorian. First, a technical assessment MAR investigated (hydro-)geological aspects. As result, potential...
Characterizing unsaturated water flow in the subsurface is a requirement for understanding effects of droughts on agricultural production or impacts climate change groundwater recharge. By employing an improved lumped-parameter model (LPM) approach that mimics variable we have interpreted stable isotope data (δ18 O and δ2 H), taken over 3 years at lysimeter site located Germany. Lysimeter soil cores were characterized by sandy gravel (Ly1) clayey silt (Ly2), both lysimeters vegetated with...
The first observation of the phenomenom deuteron spin dichroism in energy region 6-20 MeV is described. Experimental values this effect for deuterons after passage an unpolarized carbon target are reported.
The production of tensor polarization in an unpolarized deuteron beam after passage through carbon targets, which includes the effect spin dichroism, has been observed for first time. Theoretical background, experimental setup, and results experiment are presented.
Summary The OhmPi project aims to develop an open-source, open-hardware resistivity meter, dedicated the research community and not-for-profit organisations. was initiated enable more flexibility with regards conventional equipment, for investigating easily novel acquisition strategies or designing complex monitoring experiments. Here, we describe latest developments of focus on performance instrument in field. We review specification development version v2024, present applications including...
Freshwater lenses, a layer of fresh water that floats atop saline groundwater, are vulnerable sources drinking for small islands. The threats to freshwater and their recovery following catastrophic events, is not well documented. Due storm surge flooding during the Category 5 Hurricane Dorian in September 2019, lenses Grand Bahama were inundated with salt water, removing source island. This study builds on previous work monitor three years after hurricane by assessing tidal lag, as stable...