Search results for "noble"

Investigation of the noble gas solubility in H2O–CO2 bearing silicate liquids at moderate pressure II: the extended ionic porosity (EIP) model

2000

A semi-theoretical model is proposed to predict partitioning of noble gases between any silicate liquid and a H2O–CO2 gas phase with noble gas as a minor component, in a large range of pressures (at least up to 300 MPa). The model is based on the relationship between the concentration of dissolved noble gas and ionic porosity of the melt, found by Carroll and Stolper [Geochim. Cosmochim. Acta 57 (1993) 5039–5051] for H2O–CO2 free melts. It evaluates the effect of dissolved H2O and CO2 on the melt ionic porosity and, consequently on Henry’s constants of noble gases. The fugacities of the noble gases in the H2O–CO2–noble gas mixtures are also considered in our equilibrium calculations of diss…

Uno sguardo d'insieme

2021

Nell’Europa bassomedievale mantenere il potere, ottenere il consenso e contrastare gli oppositori furono obiettivi imprescindibili per tutti i sovrani, nella complessa e, a volte, conflittuale dialettica tra la monarchia e le realtà locali. Una pluralità di soggetti entrava in gioco nella gestione del potere, nella macchina del consenso e nella composizione del dissenso. Accanto ai protagonisti del palcoscenico politico (imperatori, papi e re), cercavano spazio di negoziazione attori comprimari ma essenziali per l’azione scenica (aristocratici, città, regine consorti ed ebrei). Divisioni e contrasti interni compromettevano il funzionamento della compagine statale e appannavano l’immagine de…

Vigor F7 projekta ietekme uz redzes funkcijām

2017

Maģistra darbs ir uzrakstīts angļu valodā uz 38 lapām. Tas satur 12 attēlus, 9 tabulas, 26 atsauces uz literatūras avotiem un 4 pielikumus. Galvenais darba mērķis ir nodemonstrēt F7 ierīces ietekmi uz redzes sistēmu un tās funkcijām. Tika veikti divi eksperimenti: Eksperiments I (30 dalībnieki, 10 – 40 g.v.), lai izvērtētu Vigor F7 ierīces ietekmi uz redzes funkcijām; Eksperiments II (20 dalībnieki, sportisti, 14 – 48 g.v.), lai izvērtētu Vigor F7 ierīces ietekmi uz dinamisko iemaņu efektivitāti. Abos eksperimentos novēroja statistiski nozīmīgi atšķirīgus rezultātus gan redzes funkcijām, gan dinamiskajām iemaņām, ja izmantoja F7 ierīci.

Novel procedure for the template synthesis of metal nanostructures

2008

In this work we describe a novel method for the fabrication of a regular and uniform array of Cu nanowires into anodic alumina membranes. It is based on galvanic contact between the metal sputtered film covering the bottom of template and a less noble metal. The growth rate was estimated as function of the immersion time. Nanowires with aspect ratio from 12 to 286 were obtained by adjusting the deposition time. Copper nanowires were found to be polycrystalline with an average crystalline size of about 40 nm. This procedure can be applied for the preparation of a wide range of metallic nanostructures and it can be easily scaled up for industrial processing. Keywords: Displacement deposition,…

Epitome regii ac vetustissimi ortus Sacrae Caesareae ac Catholic[a]e Maiestatis ... Dn. Ferdinandi Vngariae ac Bohemiae Regis ... / à Hieronymo Gebu…

1530

Sig. A-CC4 Els grav. xil. - Escut imperial orlat a la port. amb la llegenda "Sub vmbra alarum tuarum, protege nos". - Escut heràldic al final Text amb postil·les marginals. - Reclams

Trace elements and noble gases (He, Ne, Ar) isotopic study of Fuerteventura carbonatites: implications for their mantle source

Noble Gases as Magnetic Probes in Fullerene Chemistry

2016

The composition of fluids stored in the central Mexican lithospheric mantle: Inferences from noble gases and CO2 in mantle xenoliths

2021

We present the first isotopic (noble gases and CO2) characterization of fluid inclusions coupled to Raman microspectroscopy analyses in mantle xenoliths from Central Mexico, a geodynamically complex area where the Basin and Range extension was superimposed on the Farallon subduction (terminated at 28 Ma). To characterize the isotopic signature of the Central Mexican lithospheric mantle, we focus on fluid inclusions entrapped in mantle xenoliths found in deposits of the Joya Honda maar (JH), a Quaternary monogenetic volcano belonging to the Ventura Espiritu Santo Volcanic Field (VESVF) in the state of San Luis Potosí (central Mexico). Thirteen ultramafic plagioclase-free xenoliths were selec…

RVVS 2013

2013

Formaldehyde: Catalytic Oxidation as a Promising Soft Way of Elimination

2013

International audience; Compared to other molecules such as benzene, toluene, xylene, and chlorinated compounds, the catalytic oxidation of formaldehyde has been studied rarely. However, standards for the emission level of this pollutant will become more restrictive because of its extreme toxicity even at very low concentrations in air. As a consequence, the development of a highly efficient process for its selective elimination is needed. Complete catalytic oxidation of formaldehyde into CO2 and H2O using noble-metal-based catalysts is a promising method to convert this pollutant at room temperature, making this process energetically attractive from an industrial point of view. However, th…