Search results for "atla"
showing 10 items of 1241 documents
Factors influencing axillary shoot proliferation and adventitious budding in cedar.
2005
We developed procedures for in vitro cloning of Cedrus atlantica Manetti and C. libani A. Rich explants from juvenile and mature plants. Explant size was one determinant of the frequency of axillary bud break in both species. Shoot tips and nodal explants mainly developed calli, whereas bud sprouting occurred in defoliated microcuttings cultured on a modified Murashige and Skoog medium without growth regulators. Isolation and continuous subculture of sprouted buds on the same medium allowed cloning of microcuttings from C. atlantica and C. libani seedlings and bicentennial C. libani trees, thus providing a desirable alternative for multiplying mature trees that have demonstrated superior ch…
Role of peat organic matter on isotopic composition of most abundant benthic organisms in intertidal habitats of SW Iceland
2008
The transfer of peat organic matter (OM) from tidal pools of upper littoral to downstream rocky shores and its potential incorporation into marine biota were investigated using the stable isotope approach. Samplings were carried out in September 2004 in two SW Icelandic sites (Osar and Hvassahraun), where we selected (1) areas with shores where grass gently declined towards rocks and, on reaching the sea line, formed small tidal peat pools and (2) areas where grass and rocky shores were not contiguous, rather the grass lower limits were several hundreds of meters back from the shore. In both grass and no grass areas, in the intertidal zone, all benthic organisms and all potential OM sources…
Sources of organic matter for inter-tidal consumers in Ascophyllum-shores (Sw Iceland): a multi stable isotope approach.
2007
Stable isotopes were used to examine the origin of organic matter in Icelandic Ascophyllum-based habitats, the role of different organic matters in filling intertidal food webs and the food preferences of the most abundant suspension feeders, grazers and predators. We selected three intertidal sites on the SW coast of Iceland where we sampled in early September 2004, organic matter sources (POM, SOM and most abundant primary producers, A. nodosum and F. vesciculosus) and the most abundant macrofauna species (barnacles, mussels, gastropods, sponge and crabs). Even though the primary production (Ascophyllum-based) was the same at the three study sites, the isotopic composition of common-among…
Chemical Composition of the Essential Oils ofPistacia atlanticaDesf.
2005
The chemical composition of the three essential oils obtained by hydrodistillation of the resin, leaves and fruits of Pistacia atlantica Desf. (Anacardiaceae) was studied by GC and GC/MS. Monoterpene hydrocarbons constituted the main chemical group in the resin oil, with α-pinene (42.9%) and β-pinene (13.2%) as the major components. Oil of the fruits contained high amounts of oxygenated monoterpenes, with bornyl acetate (21.5%) as the major component, while oxygenated monoterpenes and sesquiterpenes were found to predominate in the oil of leaves among which terpinen-4-ol (21.7%) and elemol (20.0%) were the most abundant components.
L'Atlante di Palermo neocosmopolita
2021
Ogni processo di pianificazione urbanistica si basa su un’ampia attività di analisi e interpretazione dei luoghi, delle comunità, delle identità e delle relazioni, la quale è fortemente legata alla natura, allo stile e agli obiettivi del piano che si sta redigendo e, ogniqualvolta intraprendiamo il complesso processo di pianificazione, abbiamo bisogno di produrre un modello di conoscenza che analizzi e valuti i problemi del territorio in modo quanto più possibile condiviso, oggettivo in quanto riconducibile a un sistema riconoscibile di principi e regole e non solo basato sulla razionalità tecnica. La comprensione dello stato corrente e l’interpretazione delle tendenze della trasformazione …
Evidence for a link between the Atlantic Multidecadal Oscillation and annual asthma mortality rates in the US
2019
AbstractAn association between climatic conditions and asthma mortality has been widely assumed. However, it is unclear whether climatic variations have a fingerprint on asthma dynamics over long time intervals. The aim of this study is to detect a possible correlation between climatic indices, namely the Atlantic Multidecadal Oscillation and Pacific Decadal Oscillation, and asthma mortality rates over the period from 1950 to 2015 in the contiguous US. To this aim, an analysis of non-stationary and non-linear signals was performed on time series of US annual asthma mortality rates, AMO and PDO indices to search for characteristic periodicities. Results revealed that asthma death rates evalu…
La coalizione transatlantica nel Consiglio di Sicurezza delle Nazioni Unite
2012
Atlas temático de la Comunitat Valenciana
2022
Este compendio de 136 representaciones cartográficas, mayormente con base municipal o comarcal, permite caracterizar el territorio valenciano, condicionado por un conjunto de procesos históricos y actuales cuya manifestación habitual son los desequilibrios y las diferencias espaciales en materia de relieve, clima, demografía, agricultura, industria, turismo, medio ambiente, patrimonio cultural, historia y organización del territorio, entre otros. La obra incluye, además, textos y comentarios redactados por 62 expertos en dichas materias para favorecer la comprensión de los mapas y dotarlos de valor añadido. En definitiva, se persigue describir e interpretar los procesos que caracterizan el …
La criminalità organizzata come problema di sicurezza internazionale nella nuova agenda transatlantica
2010
Un panorama aggiornato delle mafie italiane e straniere. L'attuale dibattito sul concorso esterno. Le novità normative dei pacchetti sicurezza sulle misure patrimoniali contro la mafia. la legge n. 50 del 2010 istitutiva dell'Agenzia nazionale per l'amministrazione e destinazione dei beni sequestrati e confiscati alla criminalità organizzata
Measurement of top-quark polarisation observables and a search for dark matter in single-top-quark production with the ATLAS detector at the LHC
2022
Esta tesis presenta dos análisis diferentes basados en los datos resultantes de colisiones protón-protón a una energía en el centro de masas de 13 TeV recolectados con el detector ATLAS del LHC, correspondientes a una luminosidad integrada de 139 fb$^{-1}$. El primer análisis presenta una medida de secciones eficaces diferenciales normalizadas del canal de producción de quarks top en solitario $t$-channel, donde el quark top se desintegra leptónicamente, como función de los tres ángulos de polarización del leptón para eventos con quarks top y quarks antitop tanto separadamente como de forma inclusiva. Estos observables son particularmente sensibles a efectos de nueva física en el vértice $t…