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Diversity of Arbuscular Mycorrhizal Fungi Associated with Six Rice Cultivars in Italian Agricultural Ecosystem Managed with Alternate Wetting and Drying

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Rice science 2023年第4期30卷 348-358,I0028-I0030页

作者： veronica VOLPE Franco MAGURNO Paola BONFANTE Stefano GHIGNONE Erica LUMINI Department of Life Sciences and Systems Biology University of TurinV.le P.A.Mattioli 25I-10125 TurinItaly Institute of Biology Biotechnology and Environmental ProtectionFaculty of Natural SciencesUniversity of Silesia in KatowiceJagiellońska 28Katowice 40-032Poland Institute for Sustainable Plant Protection-Turin Unit National Research Council of ItalyV.le P.A.Mattioli 25I-10125 TurinItaly

Alternate wetting and drying(AWD)system,in which water has been reduced by approximately 35%with an increased occurrence of beneficial arbuscular mycorrhizal(AM)symbiosis and no negative impact on rice yield,was proposed to utilize water and nutrients more *** this study,we selected six rice cultivars(Centauro,Loto,Selenio,Vialone nano,JSendra and Puntal)grown under AWD conditions,and investigated their responsiveness to AM colonization and how they select diverse AM *** order to investigate root-associated AM fungus communities,molecular cloning-Sanger sequencing on small subunit rDNA data were obtained from five out of the six rice cultivars and compared with Next Generation Sequencing(NGS)data,which were previously obtained in Vialone *** results showed that all the cultivars were responsive to AM colonization with the development of AM symbiotic structures,even if with differences in the colonization and arbuscule abundance in the root *** identified 16 virtual taxa(VT)in the soil compartment and 7 VT in the root *** emphasized that the NGS analysis gives additional value to the results thanks to a more in-depth reading of the less represented AM fungus taxa.

关键词： alternate wetting and drying system arbuscular mycorrhizal fungi rice molecular diversity virtual taxa

Failure of levees induced by toe uplift:Investigation of post-failure behavior using material point method

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第4期15卷 970-983页

作者： veronica Girardi Francesca Ceccato Alex Rohe Paolo Simonini Fabio Gabrieli University of Padua Department of CivilEnvironmental and Architectural EngineeringVia Ognissanti 39PaduaItaly GeoHal Graswinckelstraat 50DelftNetherlands

Levees are essential structures in flood defense systems,and their failures can lead to devastating consequences on the surrounding *** of the failure mechanisms mostly controlled by the foundation soil stratigraphy is the instability of the land side slope,triggered by the development of high uplift pressures in the *** complex phenomenon has been investigated experimentally with centrifuge tests or large-scale tests and numerically with the limit equilibrium method(LEM)and the finite element method(FEM).In this work,we applied a multiphase formulation of the material point method(MPM)to analyze the development of toe uplift instability mechanism,from the onset of failure to large *** numerical model is inspired by an experiment carried out in a geotechnical centrifuge test by Allersma and Rohe(2003).The comparison with the experiment allows for understanding critical pore pressure triggering large displacements in the foundation ***,we numerically evaluated the impact of different values of foundation soils’hydraulic conductivity on the failure *** results show that hydraulic conductivity mainly influences the time of failure onset and the extension of shear localization at ***,the advantages of using large displacement approaches in the safety assessment of earth structures are *** FEM,there are no issues with element distortions generating difficulties with numerical convergence,allowing for full postfailure *** capability permits precise quantification of earth structure damages and post-failure *** ensuing reinforcement systems’design is no longer over-conservative,with a significant reduction in associated costs.

关键词： Slopes safety assessment Levees Uplift pressure Large deformation analysis

Developing a predictive maintenance model for vessel machinery

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Journal of Ocean Engineering and Science 2020年第4期5卷 358-386页

作者： veronica Jaramillo Jimenez Noureddine Bouhmala Anne Haugen Gausdal Department of Maritime Operations University of South-Eastern Norway Kristiania University College

The aim of maintenance is to reduce the number of failures in equipment and to avoid breakdowns that may lead to disruptions during *** objective of this study is to initiate the development of a predictive maintenance solution in the shipping industry based on a computational artificial intelligence model using real-time monitoring *** data analysed originates from the historical values from sensors measuring the vessel´s engines and compressors health and the software used to analyse these data was *** results demonstrated key parameters held a stronger influence in the overall state of the components and proved in most cases strong correlations amongst sensor data from the same *** results also showed a great potential to serve as inputs for developing a predictive model,yet further elements including failure modes identification,detection of potential failures and asset criticality are some of the issues required to define prior designing the algorithms and a solution based on artificial intelligence.A systematic approach using big data and machine learning as techniques to create predictive maintenance strategies is already creating disruption within the shipping industry,and maritime organizations need to consider how to implement these new technologies into their business operations and to improve the speed and accuracy in their maintenance decision making.

关键词： Maintenance in Shipping industry Big Data Analytics Vessel Machinery Sensor Systems Sensor Data Condition Based Maintenance Predictive Maintenance

Rockfall seismic features analysis based on in situ tests:frequency, amplitude, and duration

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Journal of Mountain Science 2019年第5期16卷 955-973页

作者： Liang FENG veronica PAZZI Emanuele INTRIERI Teresa GRACCHI Giovanni GIGLI Department of Earth Sciences University of Florence

In the seismic event classification,determining the seismic features of rockfall is significantly important for the automatic classification of seismic events because of the huge amount of raw data recorded by seismic stations in continuous monitoring. At the same time, the rockfall seismic features are still not completely *** study concentrates on the rockfall frequency content, amplitude(ground velocity), seismic waveform and duration analysis, of an artificial rockfall test at Torgiovannetto(a former quarry in Central Italy). A total of 90 blocks were released in the test, and their seismic signals and moving trajectories were recorded by four tri-axial seismic stations and four cameras, respectively. In the analysis processing,all the artificial rockfall signal traces were cut separately and the seismic features were extracted individually and automatically. In this study, the relationships between a) frequency content and impacted materials, b) frequency content and the distance between block releasing position and seismic station(source-receiver distance) were discussed. As a result, we found that the frequency content of rockfall focuses on 10-60 Hz and 80-90 Hz within a source-receiver distance of 200 m, and it is well correlated with impacted material and source-receiver distance. To evaluate the difference between earthquake and rockfall, 23 clear earthquake signals recorded in a seven month-long continuous seismic monitoring, carried out with the four seismic stations, were picked out, according to the Italian national earthquakes database(INGV). On these traces we performed the same analysis as in the artificial rockfall traces, and two parameters were defined to separate rockfall events from earthquake noise. The first one, the amplitude ratio, is related to the amplitude variation of rockfall between two stations and is greater than that of earthquakes, because of the higher attenuation occurring for rockfall events, which consists in high

关键词： Rockfall Seismic noise analysis Fourier transform Seismic events classification Time-series analysis Seismic monitoring

Nickel,Lead and Zinc Sorption in a Reclaimed Settling Pond Soil

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Pedosphere 2016年第1期26卷 39-48页

作者： veronica ASENSIO Ruben FORJAN Flora Alonso VEGA Emma Fernandez COVELO Department of Plant Biology and Soil Science Faculty of BiologyUniversity of VigoAs Lagoas-Marcosende36310 VigoPon-tevedra(Spain) Department Of Plant Nutrition University of Sdo Paulo-Center of Nuclear Energy in Agriculture(USP-CENA)134 00-970 Piracica-ba-SP(Brazil)

The wastes used to amend soils sometimes have high concentrations of metals such as nickel(Ni), lead(Pb) and zinc(Zn). To determine the capacity of soils to retain these metals, the sorption capacities of different mine soils with and without reclamation treatments(tree vegetation and waste amendment) for Ni, Pb and Zn in individual and competitive situations were evaluated using the batch sorption technique. The untreated settling pond soil had low capacity for Ni, Pb and Zn retention. The site amended with wastes(sewage sludges and paper mill residues) increased the sorption capacity most, probably because of the higher concentrations of soil components with high retention capacity such as carbon and clay fraction. No significant competition was observed between metals in the competitive sorption experiment, indicating that the maximum of sorption was not achieved by adding 0.5 mmol L^(-1) of metal. We can conclude that, despite the possible additions of Ni, Pb and Zn from wastes to degraded soils, sewage sludges and paper mill residues have a high sorption capacity that would prevent the metals from being in a mobile form.

关键词： metals mine soil retaining capacity tree vegetation waste amendment

Ionogels and eutectogels for stable and long-term EEG and EMG signal acquisition

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Materials Futures

Materials Futures 2024年第3期3卷 95-110页

作者： Asmita veronica Hnin Yin Yin Nyein I-Ming Hsing Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayHong Kong Special Administrative Region of ChinaPeople’s Republic of China

Neurological injuries and disorders have a significant impact on individuals’quality of life,often resulting in motor and sensory *** assess motor performance and monitor neurological disorders,non-invasive techniques such as electroencephalography(EEG)and electromyography(EMG)are commonly *** employed wet electrodes with conductive gels are limited by lengthy skin preparation time and allergic *** dry electrodes and hydrogel-based electrodes can mitigate these issues,their applicability for long-term monitoring is *** electrodes are susceptible to motion artifacts,whereas hydrogel-based electrodes face challenges related to water-induced ***,ionogels and eutectogels derived from ionic liquids and deep eutectic solvents have gained immense popularity due to their non-volatility,ionic conductivity,thermal stability,and ***,in particular,exhibit superior *** characteristics make them suitable alternatives for the development of safer,robust,and reliable EEG and EMG ***,research specifically focused on their application for EEG and EMG signal acquisition remains *** article explores the electrode requirements and material advancements in EEG and EMG sensing,with a focus on highlighting the benefits that ionogels and eutectogels offer over conventional *** sheds light on the current limitations of these materials and proposes areas for further improvement in this *** potential of these gel-based materials to achieve a seamless interface for high-quality and long-term electrophysiological signal acquisition is *** the unique properties of ionogels and eutectogels holds promise for future advancements in EEG and EMG electrode materials,leading to improved monitoring systems and enhanced patient outcomes.

关键词： ionogel eutectogel electrode electroencephalography electromyography

Debris flow hazard assessment by means of numerical simulations:implications for the Rotolon creek valley(Northern Italy)

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Journal of Mountain Science 2017年第4期14卷 636-648页

作者： SALVATICI Teresa MORELLI Stefano PAZZI veronica FRODELLA William FANTI Riccardo Department of Earth Sciences University of FlorenceVia La Pira 450121Firenze(Italy)

On 4th November 2OLO, a debris flow detached from a large debris cover accumulated above the lowermost portion of the Rotolon landslide （Vicentine Pre-AIps, NE Italy） and channelized in the valley below within the Rotolon Creek riverbed. Such event evolved into a highly mobile and sudden debris flow, damaging some hydraulic works and putting at high risk four villages located along the creek banks. A monitoring campaign was carried out by means of a ground based radar interferometer （GB-InSAR） to evaluate any residual displacement risk in the affected area and in the undisturbed neighbouring materials. Moreover, starting from the current slope condition, a landslide runout numerical modelling was performed by means of DAN-3D code to assess the impacted areas, flow velocity, and deposit distribution of the simulated events. The rheological parameters necessary for an accurate modelling were obtained through the back analysis of the 2010 debris flow event. Back analysis was calibrated with all of the available terrain data coming from field surveys and ancillary documents, such as topographic, geomorphological and geological maps, with pre- and post-event LiDAR derived DTMs, and with orthophotos. Finally, to identify new possible future debris flow source areas as input data for the new modelling, all the obtained terrain data were reanalysed and integrated with the GB-InSAR displacement maps; consequently, new simulations were made to forecast future events. The results show that the integration of the selected modelling technique with ancillary data and radar displacement maps can be a very useful tool for managing problems related to debris flow events in the examined area.

关键词： Debris flow DAN-3D GB-InSAR Numerical modelling Deep Seated Gravitational Slope Deformation (DSGSD) Rotolon Creek

Deterministic and fuzzy-based methods to evaluate community resilience

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Earthquake Engineering and Engineering Vibration 2018年第2期17卷 261-275页

作者： Omar Kammouh Ali Zamani Noori veronica Taurino Stephen A.Mahin Gian Paolo Cimellaro Department of Civil Structural & Geotechnical Engineering Politecnico di Torino Sim Center Byron and Elvira Nishkian Professor of Structural Engineering 777 Davis Hall University of California Department of Civil and Environmental Engineering University of California

Community resilience is becoming a growing concern for authorities and decision *** paper introduces two indicator-based methods to evaluate the resilience of communities based on the PEOPLES *** is a multi-layered framework that defines community resilience using seven *** of the dimensions is described through a set of resilience indicators collected from literature and they are linked to a measure allowing the analytical computation of the indicator’s *** first method proposed in this paper requires data on previous disasters as an input and returns as output a performance function for each indicator and a performance function for the whole *** second method exploits a knowledge-based fuzzy modeling for its *** method allows a quantitative evaluation of the PEOPLES indicators using descriptive knowledge rather than deterministic data including the uncertainty involved in the *** output of the fuzzy-based method is a resilience index for each indicator as well as a resilience index for the *** paper also introduces an open source online tool in which the first method is implemented.A case study illustrating the application of the first method and the usage of the tool is also provided in the paper.

关键词： Deterministic approach resilience indicators fuzzy method PEOPLES framework Earthquake resilience

Layer resolved magnetization reversal study in SmCo_5 /Fe nanocomposite bilayers

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Chinese Physics B 2010年第3期19卷 528-532页

作者： F.Shahzad S.A.Siddiqi M.Y.Im A.avallone P.Fischer Z.Hussain I.Siddiqi F.Hellman Centre for Solid State Physics University of the PunjabLahore-54590Pakistan Center for X-ray Optics Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Advanced Light Source Berkeley LaboratoryUniversity of CaliforniaBerkeleyCA-94720USA Department of Physics University of CaliforniaBerkeleyCalifornia-94720USA

A hard/soft SmCo5/ Fe nanocomposite magnetic bilayer system is fabricated on x-ray transparent 100-200 nm thin SiaN4 films by magnetron sputtering. The microscopic magnetic domain pattern and its behaviours during magnetization reversal in the hard and the soft magnetic phases are studied separately by element specific magnetic soft x-ray microscopy at a spatial resolution of better than 25 Nm. We observe that the domain patterns for the soft and hard phases show coherent behaviours in varying magnetic fields. We derive local M（H） curves from the images of Fe and SmCo5 separately and find the switches for hard and soft phases to be the same.

关键词： multilayers x-ray microscopes magnetic properties of nanostructures