Search results for " Resolution"

Suspected-screening assessment of the occurrence of organic compounds in sewage sludge

2021

The profiling of emerging organic pollutants present in sludge and generated during wastewater treatment is much more limited than in water. This is mainly due to the difficulty of sludge analysis because of its high content of organic matter and interfering compounds. In this study, a generic extraction method using a mixture of buffered water (pH 4.1) and solid phase extraction (SPE) clean-up was applied to samples of sludge obtained in different treatment plants. This extraction was followed by determination of the contaminants by ultra-high performance liquid chromatography coupled to high resolution mass spectrometry (UHPLC-HRMS), using suspected screening to detect the most relevant o…

Buchbesprechung: High-Resolution NMR Techniques in Organic Chemistry. Von Timothy D. W. Claridge.

2001

Der Nachweis zellulärer Reaktionen im kondylären Kiefergelenkknorpel mittels NMR-Mikroskopie Grundlagenuntersuchungen für eine hochaufgelöste Kernspi…

1992

Das regionale Auflosungsvermogen moderner bildgebender Verfahren reicht heute noch nicht aus, um Veranderungen des mandibularen Gelenkknorpels, zum Beispiel bei funktionskieferorthopadischer Behandlung, klinisch zu objektivieren. In tierexperimentellen Untersuchungen am Kiefergelenk des Hausschweins wurden auf der Grundlage von H-NMR-relaxometrischen Messungen an kondylaren Knorpelproben NMR-mikroskopische Untersuchungen am intakten Kiefergelenkpraparat durchgefuhrt. Dabei gelang es, den mandibularen Gelenkknorpel bis hin zur zellularen Ebene darzustellen und Regenerationsprozesse als Spafolge eines operativen Eingriffs am Kiefergelenk nachzuweisen. Die Ergebnisse wurden hinichtlich ihrer B…

Preventing Violence and Social Exclusion through Sport and Physical Activity: The SAVE Project

2018

Sport Against Violence and Exclusion (SAVE), a project cofounded by the Erasmus + Program of the European Union, seeks to prevent violent and socially exclusive behaviors through physical activity. The current editorial shows a range of possible interpretations of these two phenomena from both a psychological and sociological point of view, offering helpful methods to coaches who train children (ages 6 to 12)in grass-root sport clubs. Following a thorough analysis, partners from seven EU countries (Lithuania, Italy, Croatia, Bosnia and Herzegovina, Serbia, Austria, and Spain) will be able to identify skills and techniques for coaches to ensure inclusive training methods as well as to provid…

Virtual Tours as Emerging Technologies to Engage Children and Youth with their Country’s Historical Conflicts

2022

Virtual Reality (VR) is increasingly used for visiting historic places. Research on VR experiences in dark tourism (that focuses on mortality) focuses almost exclusively on adults. No studies were found that used virtual tours to engage children with their own country’s conflicts. The present study addresses this gap by designing and developing virtual tours in four cities of Europe with a troubled past. Virtual tours engage children and youth in historical conflicts using multi-perspective storytelling. The aim of this pre-test post-test comparative case study is to examine the change on students’ perceptions of their country’s troubled past after their interaction with a virtual tour of t…

Recent results on heavy-ion induced reactions of interest for neutrinoless double beta decay at INFN-LNS

2019

Abstract The NUMEN project aims at accessing experimentally driven information on Nuclear Matrix Elements (NME) involved in the half-life of the neutrinoless double beta decay (0νββ). In this view measurements of Heavy Ion (HI) induced Double Charge Exchange (DCE) reaction cross sections are performed with high-accuracy. In particular, the (18O,18Ne) and (20Ne,20O) reactions are used as tools for β+β+ and β-β- decays, respectively. In the experiments, performed at INFN - Laboratory Nazionali del Sud (LNS) in Catania, the beams are accelerated by the Superconducting Cyclotron (CS) and the reaction ejectiles are detected the MAGNEX magnetic spectrometer. The measured cross sections are challe…

High Resolution Study of the v1 + 2v2 −v2 and 2v2 + v3 − v2 ”Hot” Bands and Ro-Vibrational Re-Analysis of the v1 + v2/v2 + v3/3v3 Poliad of the SO2 M…

2010

The main goal of the present study was to analyse rotational stuctures of two excited vibrational states, (120) and (021). Because both the band, v1+2v2 and 2v2+v3 one are extremally weak, a special efforts were faired to record very weak hot bands, v1+2v2−v2 and 2v2+v3−v2.Both of those bands are located in the region of considerably more stronger combinational bands, v1 + v2 and v2 + v3. On that reason, as the first step of analysis, we made assignments of transitions belonging to these v1 + v2 and v2 + v3 bands. As the result of analysis, we were able to assign three times more transitions to the bands v1 + v2 and v2 + v3 than it was known in the before literature. After "cleaning" the ex…

Magnetic Resonance Microscopy Contribution to Interpret High-Resolution Magic Angle Spinning Metabolomic Data of Human Tumor Tissue

2010

[EN] HRMAS NMR is considered a valuable technique to obtain detailed metabolic profile of unprocessed tissues. To properly interpret the HRMAS metabolomic results, detailed information of the actual state of the sample inside the rotor is needed. MRM (Magnetic Resonance Microscopy) was applied for obtaining structural and spatially localized metabolic information of the samples inside the HRMAS rotors. The tissue was observed stuck to the rotor wall under the effect of HRMAS spinning. MRM spectroscopy showed a transference of metabolites from the tissue to the medium. The sample shape and the metabolite transfer after HRMAS indicated that tissue had undergone alterations and it can not be s…

Resolution of β-aminophosphines with chiral cyclopalladated complexes

2005

Abstract Resolution of the racemic chiral β-aminophosphines Ph 2 PCH 2 CH(Ph)NH(Ar) ( L 1 for Ar = C 6 H 5 and L 2 for Ar = 2,6-C 6 H 3 i Pr 2 ) has been investigated by use of different cyclopalladated complexes as chiral agents. The resulting complexes afford diastereomeric adducts in a 1:1 ratio. After successive crystallizations from ethanol, a d.e. of 98% was achieved for one aminophosphine palladium complex, while no significant d.e. was obtained after crystallizations from chlorinated solvents. The X-ray structure analysis has pointed out intermolecular hydrogen interactions N–H⋯Cl between the P,N ligand and the chloride ion, which are responsible for the formation and stabilization …

Compared regimes of NDVI and rainfall in semi‐arid regions of Africa

2006

Bi‐monthly normalized difference vegetation index (NDVI) at an 8 km spatial resolution from the advanced very high resolution radiometers (AVHRR) was used from 1981 to 1995 to analyse the vegetation response to rainfall supply in semi‐arid regions of Africa. Within the 200–600 mm annual rainfall belt, for which the apparent NDVI response to rainfall was the strongest, three regions were selected which exhibited different patterns in their NDVI regimes and/or relationships with rainfall. The regions, located in western, southern and eastern Africa, were split into coherent sub‐regions in terms of mean regime of photosynthetic activity through a cluster analysis. Overall, intra‐regional diffe…