Search results for "660"

Influence of Iron Sulfide Nanoparticle Sizes in Solid‐State Batteries**

2021

Abstract Given the inherent performance limitations of intercalation‐based lithium‐ion batteries, solid‐state conversion batteries are promising systems for future energy storage. A high specific capacity and natural abundancy make iron disulfide (FeS2) a promising cathode‐active material. In this work, FeS2 nanoparticles were prepared solvothermally. By adjusting the synthesis conditions, samples with average particle diameters between 10 nm and 35 nm were synthesized. The electrochemical performance was evaluated in solid‐state cells with a Li‐argyrodite solid electrolyte. While the reduction of FeS2 was found to be irreversible in the initial discharge, a stable cycling of the reduced sp…

2D/3D Metallic Nano-objects Self-Organized in an Organic Molecular Thin Film.

2020

ACS omega 5(18), 10441-10450 (2020). doi:10.1021/acsomega.0c00391

Neutron tomography of ancient lead artefacts

2014

Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich. This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively. The investigations presented here show the results of an epigraphic analysis on ancient Roman lead ingots rescued from shipwrecks along the coast of Sicily (Italy) by means of Neutron Tomography (NT). The artefacts, including a lead horn, can be dated back to a period between the 3rd and 1st century BC. The three dimensional NT reconstructions helped the decipherment of hidden s…

Apport de matières organiques exogènes en agriculture: indicateur de potentialité de stockage de carbone dans les sols et définition de classes de di…

2007

CT3; absent

Velázquez en el entorno de Pacheco: las primeras obras

1991

A PESAR DE LA ABUNDANTE BIBLIOGRAFIA SOBRE VELAZQUEZ, LAS OBRAS DE SU PRIMER PERIODO HAN SIDO POCO ESTUDIADAS. EN ESTA ETAPA VELAZQUEÑA ES MUY IMPORTANTE LA INFLUENCIA DE SU SUEGRO FRANCISCO PACHECO. TENIENDO EN CUENTA EL AMBIENTE CULTURAL Y RELIGIOSO EN QUE SE PRODUJERON OBRAS COMO "VIEJA FRIENDO HUEVOS" O "CRISTO EN CASA DE MARTA Y MARIA" PUEDEN INTERPRETARSE RESPECTIVAMENTE COMO UNA ALEGORIA DEL MATRIMONIO Y COMO UNA ALUSION A LA VIRGEN MARIA COMO MODELO DE VIDA ACTIVA Y CONTEMPLATIVA. ESTAS INTERPRETACIONES TIENEN EN CUENTA FUNDAMENTALMENTE LAS FUENTES LITERARIAS MANEJADAS POR EL SUEGRO DEL PINTOR, FRANCISCO PACHECO, QUE VELAZQUEZ MUY PROBABLEMENTE CONOCIERA. (A.B.C./ L.A.G.)

Les stratégies communes des villes et des ligues sportives professionnelles

2013

Le cadre conceptuel de la hiérarchie urbaine s’avère pertinent pour l’analyse géographique des sports d’équipes professionnels. L’équipe est devenue un équipement urbain dont la localisation est une fonction primordiale du potentiel démographique et économique de la ville qui l’abrite (Durand, Ravenel et Helleu, 2005). Cette approche ne nie pas les éléments de structuration régionale mais considère qu’ils interviennent d’une manière secondaire et entraîne des conséquences stratégiques pour le...

Yeast Life Span and its Impact on Food Fermentations

2019

Yeasts are very important microorganisms for food production. The high fermentative capacity, mainly of the species of the genus Saccharomyces, is a key factor for their biotechnological use, particularly to produce alcoholic beverages. As viability and vitality are essential to ensure their correct performance in industry, this review addresses the main aspects related to the cellular aging of these fungi as their senescence impacts their proper functioning. Laboratory strains of S. cerevisiae have proven a very successful model for elucidating the molecular mechanisms that control life span. Those mechanisms are shared by all eukaryotic cells. S. cerevisiae has two models of aging, replic…

Protonenvermittelter Ringschluss eines negativ photochromen, Azulen‐basierten Diarylethens

2020

Auf Protonen ansprechende photochrome Moleküle sind aufgrund ihrer Fähigkeit, auf nicht-invasive schnelle optische Stimuli zu reagieren, und wegen der ubiquitären Bedeutung von Protonierungs- und Deprotonierungsprozessen, sehr interessant. Üblicherweise befinden sich die sauren/basischen Stellen dieser Moleküle an Heteroatomen, die orthogonal zum photoaktiven π-Zentrum ausgerichtet sind. In dieser Arbeit wird Azulen, ein protonensensitiver reiner Kohlenwasserstoff, in das Gerüst eines Diarylethen-Photoschalters eingebaut. Dieser zeigt einen bisher ungekannten, protonenvermittelten, negativ photochromen Ringschluss. Veränderungen seiner optischen Eigenschaften durch Protonierung, sowohl in d…

Gozos de S. Vicente de Paul para las Hijas de la Caridad

Il·lustració del sant situada entre el goig Text del goig a tres col. separades per dobles filets i, també, a línia tirada

Enological Repercussions of Non-Saccharomyces Species

2019

The bulk of the sugar fermentation in grape juice, in order to produce wine is carried out by yeasts of the genus Saccharomyces, mainly S. cerevisiae. However, S. cerevisiae is not the only wine yeast, as spontaneous grape juice fermentation involves a complex succession of growth and death of different yeasts [1,2], and each of them contribute to the organoleptic properties of the final product. Saccharomyces are not usually found in the epiphytic yeasts present on the surface of grapes, where Hanseniaspora, Candida, Pichia, and Hansenula are dominant [3]. However, Saccharomyces imposes itself due to its higher tolerance to the stressful conditions of fermentation, due to its resistance to…