Search results for "etica"

showing 10 items of 14083 documents

On-Surface Reactions

2015

On-surface synthesis constitutes a rapidly growing field of research due to its promising application for creating stable molecular structures on surfaces. While self-assembled structures rely on reversible interactions, on-surface synthesis provides the potential for creating long-term stable structures with well-controlled properties, for example superior electron transport for future molecular electronic devices. On-surface synthesis holds the promise for preparing insoluble compounds that cannot be produced in solution. Another highly exciting aspect of on-surface synthesis is the chance to discover new reaction pathways due to the two-dimensional confinement of the reaction educts. In …

molecular electronicsChemistryMolecular electronicsNanotechnologySurface reaction530Atomic and Molecular Physics and Opticstwo-dimensional confinementmolecular structure formationmicroscopyElectronicsscanning probePhysical and Theoretical Chemistryultrahigh vacuumHigh potentialChemPhysChem
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Case-specific performance of MM-PBSA, MM-GBSA, and SIE in virtual screening.

2015

In drug discovery the reliable prediction of binding free energies is of crucial importance. Methods that combine molecular mechanics force fields with continuum solvent models have become popular because of their high accuracy and relatively good computational efficiency. In this research we studied the performance of molecular mechanics generalized Born surface area (MM-GBSA), molecular mechanics Poisson-Boltzmann surface area (MM-PBSA), and solvated interaction energy (SIE) both in their virtual screening efficiency and their ability to predict experimentally determined binding affinities for five different protein targets. The protein-ligand complexes were derived with two different app…

molecular mechanics generalized Born surface areaPhosphodiesterase InhibitorsMolecular Dynamics Simulationta3111Molecular mechanicsMolecular Docking Simulationbeta-LactamasesMolecular dynamicssolvated interaction energyBacterial ProteinsComputational chemistryAldehyde ReductaseDrug DiscoveryMaterials ChemistryHumansHSP90 Heat-Shock ProteinsPhysical and Theoretical ChemistryBeta-Lactamase InhibitorsSpectroscopymolecular mechanics Poisson-Boltzmann surface areaMM-GBSAVirtual screeningBinding SitesChemistryPhosphoric Diester Hydrolasesta1182Hydrogen BondingInteraction energyvirtual screeningComputer Graphics and Computer-Aided DesignMolecular Docking SimulationMM-PBSAModels ChemicalROC CurveSolvent modelsDocking (molecular)Area Under CurveBiological systemReceptors Progesteronebeta-Lactamase InhibitorsHydrophobic and Hydrophilic InteractionsProtein BindingJournal of molecular graphicsmodelling
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Functional Extrapolations to Tame Unbound Anions in Density-Functional Theory Calculations

2019

Standard flavors of density-functional theory (DFT) calculations are known to fail in describing anions, due to large self-interaction errors. The problem may be circumvented using localized basis sets of reduced size, leaving no variational flexibility for the extra electron to delocalize. Alternatively, a recent approach exploiting DFT evaluations of total energies on electronic densities optimized at the Hartree-Fock (HF) level has been reported, showing that the self-interaction-free HF densities are able to lead to an improved description of the additional electron, returning affinities in close agreement with the experiments. Nonetheless, such an approach can fail when the HF densitie…

molecular-dynamicsforce-fieldExtrapolationFOS: Physical sciencesElectron01 natural sciencesForce field (chemistry)IonMolecular dynamicsDelocalized electronPhysics - Chemical Physics0103 physical sciences[CHIM]Chemical SciencesPhysical and Theoretical ChemistryapproximationComputingMilieux_MISCELLANEOUSChemical Physics (physics.chem-ph)PhysicsCondensed Matter - Materials Scienceelectron-affinitiesatoms010304 chemical physicsMaterials Science (cond-mat.mtrl-sci)energiesComputational Physics (physics.comp-ph)Computer Science ApplicationsComputational physics[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistryEmbeddingDensity functional theoryPhysics - Computational PhysicsJournal of Chemical Theory and Computation
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Applicazioni dell’image processing nel campo delle infrastrutture viarie. il caso della viabilità in esercizio

2010

Nel settore delle infrastrutture di trasporto, si stanno sempre più sviluppando specifiche tecniche di rilievo automatico, ad alto rendimento, utilizzate per il monitoraggio dei parametrici caratteristici del traffico e di quelli geometrici dell’infrastruttura. Di particolare interesse per la loro semplicità, flessibilità d’uso, economia ed affidabilità sono le tecniche basate sull’image processing, che prevedono l’impiego sinergico di un sistema di monitoraggio e di elaborazione delle sequenze video registrate con strumentazioni digitali o analogiche. In questo ambito, le molteplici esperienze di ricerca già maturate hanno dimostrato la versatilità di tali procedure in numerose applicazion…

monitoraggio traffico stradaleImage processingsegnaletica verticale
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Reuse of Food Waste: The Chemical Composition and Health Properties of Pomelo (Citrus maxima) Cultivar Essential Oils

2022

The aim of the present study is to investigate the chemical profile, antioxidant activity, carbohydrate-hydrolysing enzyme inhibition, and hypolipidemic effect of essential oils (EOs) extracted from Sicilian Citrus maxima (pomelo) flavedo. Using gas-chromatography-mass spectrometry analysis (GC-MS) we analysed the Eos of five cultivars of C. maxima, namely, ‘Chadock’, ‘Maxima’, ‘Pyriformis’, ‘Terracciani’, and ‘Todarii’, and their blends. The antioxidant activity was performed by using a multi-target approach using 2,2′-Azino-Bis-3-Ethylbenzothiazoline-6-Sulfonic acid (ABTS), 2,2-Diphenyl-1-picrylhydrazyl (DPPH), ferric reduc…

monoterpene hydrocarbonscarbohydrate-hydrolysing enzymesOrganic ChemistryPharmaceutical SciencePCA and HCA analyses‘recirculate’gas chromatography-mass spectrometryAnalytical ChemistryCitrus maxima (Burm.) Merr<i>Citrus maxima</i> (Burm.) Merr.; gas chromatography-mass spectrometry; monoterpene hydrocarbons; ‘recirculate’; PCA and HCA analyses; carbohydrate-hydrolysing enzymes; lipaseChemistry (miscellaneous)Drug DiscoverylipaseMolecular MedicinePhysical and Theoretical Chemistry
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Recensione: G. Didi-Huberman, "Quand les images prennent position", Ed. de Minuit, Paris 2009, in www.giornaledifilosofia.net, gennaio/2010

2010

Quand les images prennent position è il penultimo lavoro dello storico dell’arte e filosofo francese Georges Didi-Huberman uscito presso Les Éditions de Minuit nella collana "Paradoxe" – il suo ultimo libro, Survivance des lucioles, uscirà il prossimo 8 ottobre nella stessa collana – ed è il primo di una promettente serie intitolata "L’Oeil de l’histoire". Il saggio in questione – pubblicato nel 2008 in spagnolo con il titolo Cuando les imàgenes toman posición e, in seguito, in francese–tenta di ricostruire il metodo di lavoro e la riflessione teorica condotta da Bertolt Brecht dal 1933 al 1955, durante il suo lungo ed errabondo esilio iniziato il 28 febbraio del ’33 all’indomani dell’incen…

montaggioSettore M-FIL/04 - EsteticaesteticaguerrapoliticaBrecht
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ERNIA DIAFRAMMATICA CONGENITA: COMPROMISSIONE TORACO-POLMONARE E DIAGNOSI GENETICA

2015

L’ernia diaframmatica congenita (EDC) è una malformazione caratterizzata da un difetto di formazione del diaframma che rimane incompleto, determinando un diverso grado di risalita degli organi addominali nel torace durante la vita fetale. La sopravvivenza è condizionata principalmente dalla compromissione del parenchima polmonare che causa un mancato sviluppo alveolare e vascolare con conseguenti ipoplasia e ipertensione polmonare. L’aumentata sopravvivenza alla nascita dei neonati con EDC ha comportato un parallelo aumento della morbilità respiratoria a lungo termine. In oltre il 70% dei casi l’evento patogenetico dell’EDC è sconosciuto; tuttavia è sempre più evidente il ruolo dei fattori …

morbilità respiratoriafollow-upernia diaframmatica congenitageneticaernia diaframmatica congenita; genetica; morbilità respiratoria; follow-up
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La forma del "Denkraum": tecnica e rappresentazione nella conferenza di Kreuzlingen

2012

Nel 1895 Aby Warburg decide di affiancare allo ricerca teorica l’osservazione antropologica sul campo, facendo esperienza diretta di usi, riti e costumi degli indiani Hopi. Lo studioso amburghese documenta meticolosamente il suo viaggio portando con sé una Box Camera Kodak, uno dei primi apparecchi prodotti dalla casa. All’interno di una visione del sapere unitario, spazio di dialogo e integrazione tra metodi e discipline differenti, la scelta del mezzo espressivo diventa un modo per esplorarne e sperimentarne le potenzialità peculiari. L’interesse per la tecnica si sposa con una concezione estetica non formalistica, secondo la quale l’arte coincide con una necessità biologica specificatame…

morfologiaAby WarburgSettore M-FIL/04 - Esteticaestetica
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Between Uexküll and Weizsäcker: the Criticism of Functionalism and the Configuration of the Biological Act

2013

morfologiaSettore M-FIL/04 - EsteticaEsteticaantropologia medicaantropologia filosofica
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Structures and energetic properties of 4-halobenzamides

2018

The amide bond represents one of the most fundamental functional groups in chemistry. The properties of amides are defined by amidic resonance (nN→π*C=O conjugation), which enforces planarity of the six atoms comprising the amide bond. Despite the importance of 4-halo-substituted benzamides in organic synthesis, molecular interactions and medicinal chemistry, the effect of 4-halo-substitution on the properties of the amide bond in N,N-disubstituted benzamides has not been studied. Herein, we report the crystal structures and energetic properties of a full series of 4-halobenzamides. The structures of four 4-halobenzamides (halo = iodo, bromo, chloro and fluoro) in the N-morpholinyl series h…

morpholinyl amidescrystal structure010405 organic chemistryCrystal structure010402 general chemistryCondensed Matter PhysicsRing (chemistry)Resonance (chemistry)01 natural sciences0104 chemical sciencesInorganic Chemistrychemistry.chemical_compoundCrystallographychemistryresonance energiestwisted amidesMorpholineAmideamide bondsHalogenMaterials ChemistryPeptide bondOrganic synthesisPhysical and Theoretical ChemistryActa Crystallographica Section C Structural Chemistry
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