Search results for " America"

Understanding seismic path biases and magmatic activity at Mount St Helens volcano before its 2004 eruption

2020

SUMMARY In volcanoes, topography, shallow heterogeneity and even shallow morphology can substantially modify seismic coda signals. Coda waves are an essential tool to monitor eruption dynamics and model volcanic structures jointly and independently from velocity anomalies: it is thus fundamental to test their spatial sensitivity to seismic path effects. Here, we apply the Multiple Lapse Time Window Analysis (MLTWA) to measure the relative importance of scattering attenuation vs absorption at Mount St Helens volcano before its 2004 eruption. The results show the characteristic dominance of scattering attenuation in volcanoes at lower frequencies (3–6 Hz), while absorption is the primary atte…

Fatty acids and sugar composition of avocado fruit during harvesting time and post-harvest ripening period: A review

2018

In a study of the maturity of avocado fruit it is important to elucidate the lipid metabolism in the fruit during growth and storage, since the avocado stores a large amount of lipids in the edible pulp. Meanwhile the fatty acids may then form fats by combining with glycerol, a sugar metabolism product, and sugar metabolism of the avocado fruit should be considered.

Oviposition deterrence and repellent activities of selected essential oils against Tuta absoluta Meyrick (Lepidoptera: Gelechiidae): laboratory and g…

2022

AbstractTuta absoluta, an invasive pinworm characterized by high reproductive potential and adaptation to different agroecological conditions, cause serious damage to tomato crops. Chemical control with synthetic insecticides is widely used to control this pest, although pesticides exhibit side effects on non-target organisms and negatively impact the environment, with the occurrence of resistance to some active substances in the target pest. The use of essential oils (EOs) from aromatic or officinal plants could represent an environmentally safe control method, alternative to synthetic insecticide application. In this work we investigated the effect of EOs from Spanish oregano, laurel, bas…

Indagini di laboratorio sui composti che inducono l'aggregazione delle neanidi di I età in Leptoglossus occidentalis (Hemiptera, Coreidae)

2011

Leptoglossus occidentalis è una cimice che si alimenta degli strobili e dei semi delle conifere appartenenti alla famiglia delle Pinaceae. Le neanidi di I età hanno un comportamento gregario che favorisce la sopravvivenza degli individui, in analogia a quanto visto in altre specie appartenenti allo stesso genere (Wheeler et al., 1990). L’individuazione dei composti semiochimici che influenzano questo comportamento potrebbe portare allo sviluppo di nuovi metodi di controllo di L. occidentalis. Le estrazioni (whole body) sono state realizzate su gruppi di 7-27 neanidi di I età per 30 minuti utilizzando un quantitativo di 40µl di esano o di acetone per neanide. Gli estratti sono stati biosaggi…

Imaginaire et réalité de l’évènement. Valencia et l’America’s Cup 2007

2009

Le sujet de cette proposition, qui fait état d'une recherche en cours sur la contribution des grands événements à la rénovation urbaine1, porte sur la relation entre infrastructures sportives et mécanismes de transformation des villes. L’analyse de la relation entre l’imaginaire et la représentation de l’événement permet d’aborder, d’une part, le thème de la reconnaissance internationale de l’image de la ville et, d’autre part, le thème de la détermination d’une stratégie urbaine de longue durée. C’est à partir de l’exemple de l’America’s Cup 2007 à Valencia, que sera interrogée la place de l’image et de la représentation des villes dites événementielles. Suivre quelques étapes qui ont cara…

Libertà, lavoro e architettura negli edifici-simbolo della giovane nazione americana. Attualità di un dibattito : intervista a Mabel Wilson (GSAPP, C…

2022

Il 13 luglio 2000 il Congresso americano sanciva l’urgenza del riconoscimento del lavoro degli afro-americani nella realizzazione del Campidoglio di Washin¬gton, D.C., promuovendo a tal fine la costituzione di una commissione dedicata allo studio del tema (Risoluzione 130, 106° Congresso, 2° sessione). Una decisione che, oltre un secolo e mezzo dopo il completamento dell’edifi¬cio-simbolo della nazione, voleva riconoscere in via ufficiale il ruolo fondamentale svolto dalla forza-lavoro afro americana, restituendo in questo modo alla Storia una più esatta visione del processo che ha portato al suo completamento.

Monitoring tropical forests under a functional perspective with satellite-based vegetation optical depth.

2020

Monitoring ecosystem functions in forests is a priority in a climate change scenario, as climate-induced events may initially alter the functions more than slow-changing attributes, such as biomass. The ecosystem functional properties (EFPs) are quantities that characterize key ecosystem processes. They can be derived by point observations of gas and energy exchanges between the ecosystems and the atmosphere that are collected globally at FLUXNET flux tower sites and upscaled at ecosystem level. The properties here considered describe the ability of ecosystems to optimize the use of resources for carbon uptake. They represent functional forest information, are dependent on environmental dri…

OS DESAFIOS DOS DIREITOS HUMANOS FUNDAMENTAIS NA AMERICA LATINA

2012

LE SFIDE DEI DIRITTI UMANI FONDAMENTALI IN AMERICA LATINA E IN EUROPA

2013

Il Diritto Americano

2011

introduzione al sistema giuridico americano