1,686 research outputs found
Experimental investigation and gyrokinetic simulations of multi-scale electron heat transport in JET, AUG, TCV
Biochar as plant growth promoter: Better off alone or mixed with organic amendments?
Biochar is nowadays largely used as a soil amendment and is commercialized worldwide. However, in temperate agro-ecosystems the beneficial effect of biochar on crop productivity is limited, with several studies reporting negative crop responses. In this work, we studied the effect of 10 biochar and 9 not pyrogenic organic amendments (NPOA), using pure and in all possible combinations on lettuce growth (Lactuca sativa). Organic materials were characterized by 13C-CPMAS NMR spectroscopy and elemental analysis (pH, EC, C, N, C/N and H/C ratios). Pure biochars and NPOAs have variable effects, ranging from inhibition to strong stimulation on lettuce growth. For NPOAs, major inhibitory effects were found with N poor materials characterized by high C/N and H/C ratio. Among pure biochars, instead, those having a low H/C ratio seem to be the best for promoting plant growth. When biochars and organic amendments were mixed, non-additive interactions, either synergistic or antagonistic, were prevalent. However, the mixture effect on plant growth was mainly dependent on the chemical quality of NPOAs, while biochar chemistry played a secondary role. Synergisms were prevalent when N rich and lignin poor materials were mixed with biochar. On the contrary, antagonistic interactions occurred when leaf litter or woody materials were mixed with biochar. Further research is needed to identify the mechanisms behind the observed non-additive effects and to develop biochar-organic amendment combinations that maximize plant productivity in different agricultural systems
The local magnetic field scaling of gyrokinetic turbulence and its impact on tokamak transport
Integrated modeling of ASDEX Upgrade plasmas combining core, pedestal and scrape-off layer physics
Fuzzy color image segmentation using watershed transform
In this paper, we present a segmentation technique which joins a multi-scale texture based approach and a fuzzy segmentation method using the color gradient of Di Zenzo. Thus maps of homogeneous texture patterns are enhanced by edge localization. A topographic distance is used to calculate membership degrees to each region. Both lead to segmentation using a step of watershed flooding, with few parameters to set. Moreover computation complexity has been reduced to allow treatments of images in full size and colors
212: Successful Outcome of Allogeneic Stem Cell Transplantation for High-Risk Paediatric Acute Myeloid Leukaemia using Chemotherapy-Only Conditioning and Post Transplant Immunotherapy
Experimental Investigations of the H-mode Access in Mixed Hydrogen-Deuterium Plasmas at ASDEX Upgrade
Validating reduced turbulence model predictions of Electron Temperature Gradient transport on a JET improved-confinement scenario
Results on Multiple Coulomb Scattering from 12 and 20 GeV electrons on Carbon targets
Multiple scattering effects of 12 and 20 GeV electrons on 8 and 20 mm
thickness carbon targets have been studied with high-resolution silicon
microstrip detectors of the UA9 apparatus at the H8 line at CERN. Comparison of
the scattering angle between data and GEANT4 simulation shows excellent
agreement in the core of the distributions leaving some residual disagreement
in the tails.Comment: 14 pages, 16 figures. Updated to match published versio
- …