Search results for "PET"
showing 10 items of 12749 documents
Petrology, geochronology, and tectonic implications of c . 500 Ma metamorphic and igneous rocks along the northern margin of the Central Asian Orogen…
2008
A significant portion of the continental crust of northern Eurasia is thought to have formed during the evolution of the Central Asian Orogenic Belt at the time of accretion of continental terranes and island arcs. Records of this event are well preserved within the Siberian craton–Central Asian Orogenic Belt transition zone in Lake Baikal region, particularly in the Olkhon terrane. Our results establish granulite-facies conditions for peak metamorphism in the Olkhon terrane, and indicate that the granulites were derived from island arc mafic volcanic rocks and back-arc basin sediments. Sensitive high-resolution ion microprobe dating of metamorphic zircons from two mafic granulites yielded …
Goldschmidt Abstracts 2010 – R
2010
Zircon ages of late Palaeoproterozoic (ca. 1.72–1.70Ga) extension-related granitoids in NE Rajasthan, India: Regional and tectonic significance
2011
Abstract The Khetri region forms a late Palaeoproterozoic igneous–metamorphic complex in NE Rajasthan, India. Seven granitoid plutons of the Khetri complex have been studied for zircon U–Pb and Pb–Pb dating along with whole-rock and Nd–Sr isotope geochemistry to provide new constraints on the Palaeoproterozoic magmatic activity in the Aravalli orogen of northwestern India. Most intrusives show evidence of moderate to extreme albitisation forming microcline–albite granite and albite granite, respectively. The rocks are metaluminous to weakly peraluminous, largely ferroan and intraplate A-type granites. The U–Pb zircon ages for four plutons cover a time span of 1732–1682 Ma, whereas Pb–Pb zir…
Micro-geographies of creative industries clusters in Europe: From hot spots to assemblages
2014
The aim of this paper is to provide basic stylized facts about the spatial patterns of location and co-location of clusters of creative industries in Europe. The research proposes a novel methodology for detailing the spatial delimitation of clusters, based on a geo-statistical algorithm and firm-based micro-data. The procedure is applied to a continuous space of 16 European countries and 15 creative industries in 2009. The investigation reveals that creative firms are highly clustered, and that clusters are concentrated in a ‘creative belt’ stretching from the South of England to the South-east of Germany. These clusters are predominantly metropolitan, heterogeneous, cross borders, and may…
2013
Parasitic, commensalistic, and mutualistic guests in social insect colonies often circumvent their hosts’ nestmate recognition system to be accepted. These tolerance strategies include chemical mimicry and chemical insignificance. While tolerance strategies have been studied intensively in social parasites, little is known about these mechanisms in non-parasitic interactions. Here, we describe a strategy used in a parabiotic association, i.e. two mutualistic ant species that regularly share a common nest although they have overlapping food niches. One of them, Crematogaster modiglianii, produces an array of cuticular compounds which represent a substance class undescribed in nature so far. …
Mafie e sottosviluppo psicologico.
2010
La nuova composizione negoziale della crisi d'impresa tra procedimento amministrativo e autorità giurisdizionale
2023
The contribution aims to deepen the lines of development of the national discipline that, in the wake of the Insolvency Directive, stabilizes the emergency discipline of negotiated settlement as an instrument and extrajudicial path that fits into the order of competences of the system of Chambers of Commerce, Industry, Crafts and Agriculture. In particular, the reflection aims to investigate the role and usefulness of the 'administrative management' system of the predictive elements of the crisis and insolvency between administrative procedure and consequences in terms of outcomes and possible legal phases.
Critica/crisi. Una questione degli studi culturali
2014
Critica/crisi è un'endiadi fondamentale per il pensiero moderno e contemporaneo. Essa ha caratterizzato la nascita del moderno concetto di cultura. L'esistenza di numerosi e fecondi "cultural turns" è la prova più evidente che la modernità si è immaginata a partire dai concetti di critica e crisi. Nel volume autori italiani e stranieri si confrontano sui numerosi significati dei due concetti e sulla loro relazione in campo teorico, culturale e storico, mettendo l'accento sul ricco repertorio di tradizioni che negli ultimo due secoli e mezzo si sono concentrate sul concetto di cultura.
Kirjoittamisen opettamisen disiplinaarisista kamppailuista
2019
Kirjoittamisen rooli koulutuksen kaikilla tasoilla perusopetuksesta korkeakouluun on monimutkainen, hieman provosoivasti sen voi sanoa jopa perversoituneen. Kirjoittaminen on yhä vahvemmin mittaamisen, arvioinnin ja hallinnan väline. Kirjoittamisen roolilla opettajankoulutuksessa on suoria vaikutuksia siihen, miten tulevat opettajat toimivat koulussa. Keskityn artikkelissa kirjoittamisen opettamisen ja opiskelun disiplinaaririsiin kamppailuihin. Disipliini – kuri, järjestys, oppiaine – kuuluu kasvatuksen ydinkäsitteisiin niin käytännössä kuin teoriassakin. Tapausesimerkkinä käytän Jyväskylän yliopistossa vuosituhannen alusta toteutettua koulutus- ja tutkimusmallia, integraatiokoulutusta, jo…
Nitrogen Use Efficiency and Nitrogen Fertilizer Recovery of Durum Wheat Genotypes as Affected by Interspecific Competition
2010
A better understanding of the genotype response to N fertilization under weed competition is necessary to identify varieties that exhibit high N use effi ciency even when weeds compete for available N. Such varieties may be more suitable for low input or organic systems. Th is study assessed the variations in nitrogen use effi ciency (NUE) (and its components) and the recovery of 15 N-labeled fertilizer in three durum wheat (Triticum durum Desf.) genotypes (one landrace and two varieties that diff er in terms of plant growth, grain yield potential, and adaptability to stressful environments) grown in the presence or absence of interspecifi c competition and varying soil N availability (0 or…