Search results for "Solid"

showing 10 items of 3575 documents

Characterization of the Solid State Properties of Anodic Oxides on Magnetron Sputtered Ta, Nb and Ta-Nb Alloys

2012

Tantalum oxide, niobium oxide and Ta-Nb containing mixed oxides were grown by anodizing sputter-deposited Ta, Nb and Ta-Nb alloys of different compositions. A photoelectrochemical investigation was performed in order to estimate the band gap and the flat band potential of the oxides as a function of their composition. The band gap of the investigated Ta-Nb containing mixed oxides changed monotonically between those estimated for Ta2O5 (4.1 eV) and Nb2O5 (3.4 eV) and in agreement with a proposed correlation between the Band gap of an oxide and the difference of electronegativity of the oxide constituents. From the differential capacitance curves recorded in a wide range of electrode potentia…

431Materials scienceRenewable Energy Sustainability and the EnvironmentSolid-stateCondensed Matter PhysicsSolid State Properties Anodic Oxides Ta-Nb AlloysSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCharacterization (materials science)AnodeSettore ING-IND/23 - Chimica Fisica ApplicataChemical engineeringCavity magnetronMaterials ChemistryElectrochemistry
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Surface charges at the CaF2/water interface allow very fast intermolecular vibrational-energy transfer

2020

Abstract We investigate the dynamics of water in contact with solid calcium fluoride, where at low pH, localized charges can develop upon fluorite dissolution. We use 2D surface‐specific vibrational spectroscopy to quantify the heterogeneity of the interfacial water (D2O) molecules and provide information about the sub‐picosecond vibrational‐energy‐relaxation dynamics at the buried solid/liquid interface. We find that strongly H‐bonded OD groups, with a vibrational frequency below 2500 cm−1, display very rapid spectral diffusion and vibrational relaxation; for weakly H‐bonded OD groups, above 2500 cm−1, the dynamics slows down substantially. Atomistic simulations based on electronic‐structu…

540 Chemistry and allied sciencesMaterials science530 Physics2D sum-frequency generation010402 general chemistry01 natural sciencesCatalysisVibrational energy relaxationSurface chargeDiffusion (business)DissolutionResearch Articlesenergy transfer010405 organic chemistryIntermolecular forceGeneral ChemistryInterfacial Chemistryab-initio molecular dynamics530 Physik0104 chemical sciencesDipoleSolvation shellChemical physicsMolecular vibration540 Chemiesolid/liquid interfacesResearch Article
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Thermomineral waters of Greece: geochemical characterization

2020

75 °C). In terms of pH most results vary from 5.5 to 823 °C) ii) warm (23 40 °C) iii) thermal (40 75 °C) and iv) hyperthermal (&gtfew springs show either very low pH (&lt10) proposing serpentinization processes. Regarding TDS concentrations collected waters can be subdivided into low salinity (up to 1.5 g/L) brackish (up to 20 g/L) and saline (up to 43 g/L). The medium high salinities can be justified by mixing with sea water and/or strong waterrock interaction processes. Isotope composition of O and H ranges from 12.7 to +2.7 ‰ SMOW and from 91 to +12 ‰ SMOW respectively and is generally comprised between the Global Meteoric Water Line and the East Mediterranean Meteoric Water Line. Only few water samples show a positive shift for δ18O possibly related to high temperature waterrock interaction processes. Carbon dioxide (18 997000 μmol/mol) or N2 (1100 989000 μmol/mol) or CH4 (&ltMany geothermal areas of Greece are located in regions affected by Miocene or Quaternary volcanism and in continental basins characterised by elevated heat flow. Moreover the majority of them is found along the coast as well as in islands of the Aegean Sea and thus thermal water is often brackish to saline due to marine intrusion into costal aquifer. In the present study almost 300 thermal and cold mineral water samples were collected along the Hellenic territory with their physicochemical parameters (temperature pH electrical conductivity and Eh) and the amount of bicarbonates (titration with 0.1N HCl) being determined in situ. Additionally gases found either in free or dissolved phase were sampled. Both water and gas samples were analysed at the INGVPa laboratories for major ions (Ion Chromatography) silica (Inductively Coupled Plasma Optical Emission Spectrometry) chemical composition of free and dissolved gases (Gas Chromatography) water isotopes (O and H) and carbon and helium isotopes of free and dissolved gases (Mass Spectrometry). The temperature of the investigated waters ranges from 6.5 to 98°C pH from 1.96 to 11.98 whilst Total Dissolved Solids (TDS) from 0.06 to 43 g/L. Based on the temperature parameter waters can be divided into four groups: i) cold (&lt0.5 913000 μmol/mol) are the prevailing gas species found in the studied sites. The δ13CCO2 values ranged from 20.1 to +8.5 ‰ whilst the isotope ratio of He from 0.21 to 6.71 R/RA.4) suggesting interaction with H2Srich gases or very high pH values (&gtSettore GEO/08 - Geochimica E Vulcanologia
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The Divorce allowance in Italy, between Rules and Principles

2019

Italian law gives the right to a maintenance allowance to the spouse who does not have ?mezzi adeguati?. The assumption consisting in the ?mancanza di mezzi adeguati?, originally understood by the Joint Sections of the Italian Cassation of 1990 as a lack of resources to maintain the standard of living enjoyed during the marriage, was understood by the Court of Cassation in 2017 as a lack of resources of guaranteeing independence or economic self-sufficiency. In the essay, the author shares this new approach and clarifies that the new interpretation is consistent with the principles and values of the Italian legal system. The author therefore offers arguments to support this new interpretati…

:CIENCIAS JURÍDICAS [UNESCO]UNESCO::CIENCIAS JURÍDICASeconomic independencefamily solidaritymaintenance allowanceSpousesdivorceSpouses; divorce; maintenance allowance; family solidarity; standard of living; economic independencestandard of living
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Consideraciones sobre la cláusula irph a la luz de sus antecedentes y de la doctrina consolidada del tribunal de justicia de la union europea

2021

By issuing its judgment of March 3, 2020, the Court of Justice of the European Union (CJEU) has terminated the last episode in the evolution of the IRPH index to which almost a tenth of mortgages have been referring. in Spain, compared to the rest that the Euribor takes as a reference, declaring in essence that consumers will be able to go to court to declare the abusiveness of the clause that the aforementioned index contains in the deeds of constitution of the mortgage. To understand the scope of the current situation, it is convenient to consider even briefly what the IRPH consists of and the consequences that its application has entailed for the affected consumer borrowers, taking into …

:CIENCIAS JURÍDICAS [UNESCO]declaring in essence that consumers will be able to go to court to declare the abusiveness of the clause that the aforementioned index contains in the deeds of constitution of the mortgage. To understand the scope of the current situationconsumidorthe precedent that In this regardinterés variablelately and until there is any pronouncement by our Supreme Court2020índice IRPHthe most recent resolutions issued by our Courts and Provincial Courts. All these references integrate the content of this work. HipotecaIRPH indexcláusula abusivavariable interest2070-8157 22082 Revista Boliviana de Derecho 565487 2021 31 7730067 Consideraciones sobre la cláusula irph a la luz de sus antecedentes y de la doctrina consolidada del tribunal de justicia de la union europea Castillo MartínezUNESCO::CIENCIAS JURÍDICASCarolina del Carmen By issuing its judgment of March 3compared to the rest that the Euribor takes as a referenceabusive clausethe Court of Justice of the European Union (CJEU) has terminated the last episode in the evolution of the IRPH index to which almost a tenth of mortgages have been referring. in Spaintaking into account the factual background that led to the issuance of the aforementioned resolutionconsume 504 549they included the conclusions of the Advocate Generalthe content of the STJUE itself andit is convenient to consider even briefly what the IRPH consists of and the consequences that its application has entailed for the affected consumer borrowersMortgage
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Coronavirus ed esonero da responsabilità per inadempimento di obbligazione ex art. 1218 c.c.: impossibilità sopravvenuta oppure inesigibilità della p…

2020

La crisi economica e la fase emergenziale di questi giorni sollecitano l?attenzione sull?influenza del diffondersi del contagio da Coronavirus sull?esecuzione dei rapporti obbligatori. Con particolare riferimento alla responsabilità del debitore da inadempimento di obbligazione, ex art. 1218 c.c., ci si chiede se l?epidemia COVID-19 , nel determinare l?applicazione di un regime normativo che esclude la relativa imputabilità al debitore, configuri un?ipotesi di impossibilità sopravvenuta oppure di inesigibilità della prestazione. Prima facie, le menzionate figure sembrerebbero coincidere; invero, ad un?analisi più attenta, identificano categorie diverse. Dall?analisi di siffatti profili diff…

:CIENCIAS JURÍDICAS [UNESCO]inadempimentotutela della saluteUNESCO::CIENCIAS JURÍDICASresponsabilità del debitoresolidarietàImpossibilità sopravvenutainesigibilità della prestazione
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La ?scelta? della cremazione in stato di pandemia.

2020

Lo scritto analizza la questione della cremazione dei defunti in rapporto ad una fase emergenziale come quella causata dalla diffusione pandemica del virus COVID-19. Si delineano le norme applicabili sul territorio italiano per effetto degli interventi legislativi d?urgenza, considerando anche gli interessi personalistici in rilievo nel caso concreto e la tutela che l?ordinamento giuridico nazionale riserva ai medesimi.

:CIENCIAS JURÍDICAS [UNESCO]tutela della salutediritti fondamentaliUNESCO::CIENCIAS JURÍDICASpandemiasolidarietàCremazione
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Schul-Stereometrie

1883

:MATHEMATICS::Algebra geometry and mathematical analysis::Algebra and geometry [Research Subject Categories]StereometrijaStereometrieSolid geometry
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Desarrollo de nuevas estrategias para el diseño de técnicas de cromatografía líquida miniaturizada en línea: nanopartículas, contaminación secundaria

2019

In recent years one of the most important trends in Analytical Chemistry has been the development of new analytical methodologies based on the miniaturization, simplification and automatization of the analytical process, in order to reduce the environmental impact of the analysis without compromising the sensitivity and selectivity. In this respect miniaturized liquid chromatography (LC) systems, such as capillary liquid chromatography (CapLC) and nanoliquid chromatography (NanoLC) are important achievements. These techniques are environmental friendly because the amount of material involved is limited and organic solvents, electricity and the wastes generated are lower than in conventional…

:QUÍMICA::Química analítica::Análisis cromatográfico [UNESCO]nanoparticlesUNESCO::QUÍMICA::Química analítica::Análisis cromatográficonano-liquid chromatographypolar pesticidescapillary liquid chromatographyin-tube solid-phase microextraction (IT-SPME)
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Deformative Properties of Monotropic Plastic Foams with a Pronounced Strut-Like Strukture

1996

Disertācija angļu valodā, kopsavilkums arī latviešu un vācu valodā.

:TECHNOLOGY::Engineering physics::Material physics with surface physics [Research Subject Categories]Polymer mechanicsSolid state physicsSchaumstoff VerformungenPutuplastiCietvielu mehānikaVerformungenSolid state mechanicsPolimeru mehānikaPlastic foamsPutuplasti - mehāniskās īpašībasDeformations
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