Search results for "Hive"
showing 10 items of 300 documents
Mixed-Valence Defect Ferrites : a New Family of Fine Powders and Thin Films of Spinel Ferrites
1997
When highly divided spinel ferrites become reactive enough with oxygen, to allow the oxidation of the Fe 2+ ions at low temperature and of substitute cations too, when these cations are capable of different valence states. We prepared fine particles of spinel ferrites substituted by Mn, Mo, Cu, by chimie douce, especially from oxalate precursors and used them to reveal and to study the oxido-reduction phenomena occurring in these finely divided materials. It was shown that the oxidation created a new family of spinel ferrites : the mixed-valence defect ferrites, having specific characteristics and properties. The ferrites of this type can be fine powders prepared at low temperature, or grou…
Small angle neutron scattering on periodically deformed polymers
1984
Small angle neutron scattering from periodically deformed samples is a useful extension of the methods presently available for the study of molecular dynamics of polymers. In this paper we describe apparatus that has been used to produce large cyclic deformations at frequencies upto 10 Hz and the principles by which data is collected to give spectra corresponding to different states of strain of the sample. Some data on model polydimethylsiloxane networks is given as an illustration of the value of this technique.
La memoria bruciata. L'Archivio dell'Ospedale Grande di Palermo
2019
Il 18 aprile 1593 un incendio di probabile natura dolosa colpì l'archivio dell'Ospedale grande e nuovo di Palermo, collocato a piano terra di palazzo Sclafani. Nei decenni successivi l'archivio fu più volte riordinato, subì tuttavia ulteriori deterioramenti a causa di eventi bellici, trasferimenti, incuria nella conservazione. Per ricostruire la storia dell'Ospedale grande e nuovo di Palermo, entrato in funzione nel 1442 a partire dall'aggregazione di piccoli enti assistenziali preesistenti, abbiamo dunque a disposizione una documentazione discontinua, custodita da enti diversi in luoghi diversi. I primi capitoli dell'ospedale (1431) per esempio, furono conservati dall'istituzione presso cu…
New insights into Early Celtic consumption practices: Organic residue analyses of local and imported pottery from Vix-Mont Lassois
2019
The rich Mediterranean imports found in Early Celtic princely sites (7th-5th cent. BC) in Southwestern Germany, Switzerland and Eastern France have long been the focus of archaeological and public interest. Consumption practices, particularly in the context of feasting, played a major role in Early Celtic life and imported ceramic vessels have consequently been interpreted as an attempt by the elite to imitate Mediterranean wine feasting. Here we present the first scientific study carried out to elucidate the use of Mediterranean imports in Early Celtic Central Europe and their local ceramic counterparts through organic residue analyses of 99 vessels from Vix-Mont Lassois, a key Early Celti…
Recent warming in the Balearic Sea and Spanish Mediterranean coast. Towards an earlier and longer summer
2015
This paper analyses recent changes in the temperature of the Balearic Sea and surrounding coastal areas. Monthly temperature data from several weather stations located around the Balearic basin have been used to obtain land temperatures during the period 1960-2010, and monthly thermal satellite images from the Physical Oceanography Distributed Active Archive Center (PO.DAAC) covering the period 1985-2009 have been processed to obtain sea surface temperatures (SSTs) in the Balearic Sea. A rise in temperature has been observed since 1980 and increasingly in the last 25 years, with an average warming trend of 0.039 ºC/year on land for the period 1960-2010 and 0.026 ºC/year in SSTs for 1985-200…
Isoflurane is associated with a similar incidence of emergence agitation/delirium as sevoflurane in young children ? a randomized controlled study
2006
Summary Background: Children may be agitated or even delirious especially when recovering from general anesthesia using volatile anesthetics. Many trials have focused on the newer agents sevoflurane and desflurane but for the widely used isoflurane little is known about its potential to generate agitation. We investigated the emergence characteristics of small children after sevoflurane or isoflurane with caudal anesthesia for postoperative pain control. Methods: After institutional approval and parental consent, anesthesia was randomly performed with sevoflurane (n = 30) or isoflurane (n = 29) in children at the age of 3.8 ± 1.8 years during surgical interventions on the lower part of th…
Description of Klebsiella spallanzanii sp. nov. and of Klebsiella pasteurii sp. nov
2019
AbstractKlebsiella oxytocacauses opportunistic human infections and post-antibiotic haemorrhagic diarrhoea. ThisEnterobacteriaceaespecies is genetically heterogeneous and is currently subdivided into seven phylogroups (Ko1 to Ko4, Ko6 to Ko8). Here we investigated the taxonomic status of phylogroups Ko3 and Ko4. Genomic sequence-based phylogenetic analyses demonstrate that Ko3 and Ko4 formed well-defined sequence clusters related to, but distinct from,Klebsiella michiganensis(Ko1),Klebsiella oxytoca(Ko2),K. huaxiensis(Ko8) andK. grimontii(Ko6). The average nucleotide identity of Ko3 and Ko4 were 90.7% withK. huaxiensisand 95.5% withK. grimontii, respectively. In addition, three strains ofK.…
Le fonds d’archives de l’enquête sur Minot, Bourgogne
2014
International audience
Les passages à gué de la Grande Saône, approche archéologique et historique d'un espace fluvial (de Verdun-sur-le-Doubs à Lyon).
2002
National audience
Cambiamento e continuità: i manoscritti del fondo musicale del duomo di Enna
2018
Dal Cinquecento fino agli inizi del Novecento la vita musicale a Enna – cittadina al centro della Sicilia – fu caratterizzata da particolare vivacità. Ciò si dovette soprattutto all'attività della sua più importante istituzione religiosa, la cappella musicale del Duomo, che impiegava un numero stabile di musicisti, per la maggior parte siciliani, ma anche stranieri. Fu soprattutto nel Settecento che molti di loro giunsero a Enna da Napoli, il più prestigioso centro musicale dell'epoca. Vi troviamo virtuosi cantori e strumentisti, ma anche compositori come Luigi Platone o Giuseppe Coppola, entrambi giunti in Sicilia alla fine del secolo e divenuti maestri dell'istituzione. La prolifica attiv…