1,721,058 research outputs found
Low-Cost Geomatics Surveys for Emergency Interventions on Cultural Heritage. The Case of Historic Wall in Cagliari
No full textThe documentation and metric knowledge of cultural heritage is becoming an increasingly important need, especially concerning the state of degradation of some historical assets. In this context, the metric documentation of the investigated heritage becomes fundamental for a complete knowledge of the asset to support architects and engineers in the restoration process. Recently, methods and geomatics instrumentation have been developed for the survey of cultural heritage aiming at optimizing costs and time. For example, the Apple has integrated, into its devices, a LiDAR sensor capable of providing a 3D model of spaces and objects. The paper presents the studies of their potential about the study and metric documentation of cultural heritage, in particular in cases of extreme urgency and danger of the architectural asset where the speed of survey and non-contact with it becomes relevant. We focused on the case study of a perimeter wall of a historical building. The survey was performed with two fast and expeditious geomatics methods such as the Close Range Photogrammetry (CRP) and with the LiDAR Apple sensor of the iPad Pro. The wall was also surveyed with Terrestrial Laser Scanner methodology for the validation of the results
EPR INVESTIGATION OF THE OXOVANADIUM(LV) COMPLEXES FORMED BY THE TRIPEPTIDE GLUTATHIONE AND SOME RELATED LIGANDS IN AQUEOUS-SOLUTION
No full textComplex formation between oxovanadium(IV) and glutathione (gamma-L-glutamyl-L-cysteinylglycine, GSH) was investigated in aqueous solution by EPR and electron absorption spectroscopy to identify the complexed species that were reported to form upon reduction of exogenous vanadium(V) in cellular systems. The complexing behavior of the related ligands glycine, N-acetyl-glycine, 3-mercaptopropionic acid, cysteamine, L-cysteine, N-acetyl-L-cysteine, N-acetyl-cysteamine, and oxidized glutathione (GSSG) was also examined in order to have suitable reference models. The results are compared with those reported previously
REDUCTION OF CHROMIUM(VI) BY D-GALACTURONIC ACID AND FORMATION OF STABLE CHROMIUM(V) INTERMEDIATES
No full textChromium adsorption by plant roots and formation of long-lived Cr(V) species: An ecological hazard?
No full textOxovanadium(IV) adsorption by plant roots. ESR identification of mobile and immobilized species
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PROTON ELECTRON NUCLEAR DOUBLE-RESONANCE STUDY OF OXOVANADIUM(IV) COMPLEXES OF ORTHO-DIPHENOLIC LIGANDS
No full textPROTON ELECTRON NUCLEAR DOUBLE-RESONANCE SPECTRA OF OXOVANADIUM(IV) COMPLEXES FORMED BY SALICYLIC AND ORTHO-DIPHENOLIC LIGANDS IN AQUEOUS-SOLUTION
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