Search results for "Terra"
showing 10 items of 4214 documents
Deep-Sea Bioluminescence Blooms after Dense Water Formation at the Ocean Surface
2013
The deep ocean is the largest and least known ecosystem on Earth. It hosts numerous pelagic organisms, most of which are able to emit light. Here we present a unique data set consisting of a 2.5-year long record of light emission by deep-sea pelagic organisms, measured from December 2007 to June 2010 at the ANTARES underwater neutrino telescope in the deep NW Mediterranean Sea, jointly with synchronous hydrological records. This is the longest continuous time-series of deep-sea bioluminescence ever recorded. Our record reveals several weeks long, seasonal bioluminescence blooms with light intensity up to two orders of magnitude higher than background values, which correlate to changes in th…
Globorotalia truncatulinoides in the Mediterranean Basin during the Middle–Late Holocene: Bio-Chronological and Oceanographic Indicator
2022
The planktonic foraminiferal species Globorotalia truncatulinoides is widely used as a biostratigraphic proxy for the Quaternary in the Mediterranean region. High-resolution quantitative studies performed on sediment cores collected in the central and western Mediterranean Sea evidence a significant abundance of G. truncatulinoides during the Middle Holocene. The robust chronological frame allows us to date this bio-event to 4.8–4.4 ka Before Present (BP), very close to the base of the Meghalayan stage (4.2 ka BP). As a consequence, we propose that G. truncatulinoides can be considered a potential marker for the Middle–Late Holocene chronological subdivision. G. truncatulinoides is a deep-d…
Variabilità genetica in Aristeus antennatus (Crustacea, Decapoda) attraverso analisi AFLP (Amplified Fragment Length Polymorphism).
2007
Sex ratio operativa della popolazione di Paracentrotus lividus (Lam.) nell’AMP Isola di Ustica
2006
Nell’AMP ”Isola di Ustica” l'instaurazione del regime di protezione, e quindi del divieto di prelievo, ha provocato un aumento della densità del riccio edule Paracentrotus lividus (Lam.) con conseguenze negative sulle comunità algali. L’intenso pascolo di questi echinidi regolari ha infatti trasformato la fascia superficiale sommersa in un barren ground, area a bassa complessità e diversità. Una buona stima della sex ratio operativa (OSR) di P. lividus può chiarire aspetti importanti della dinamica di popolazione di questa specie ed essere di notevole aiuto in una logica di intervento gestionale. Scopo del lavoro è stato quello di valutare la OSR della popolazione di P. lividus presente nel…
GENETIC DISTINCTIVENESS OF ITALIAN AUROCHS: NEW INSIGHT NTO CATTLE DOMESTICATION PROCESS
2008
Genetic structure and differentiation from early bronze age in the mediterranean island of sicily: Insights from ancient mitochondrial genomes
2022
Sicily is one of the main islands of the Mediterranean Sea, and it is characterized by a variety of archaeological records, material culture and traditions, reflecting the history of migrations and populations’ interaction since its first colonization, during the Paleolithic. These deep and complex demographic and cultural dynamics should have affected the genomic landscape of Sicily at different levels; however, the relative impact of these migrations on the genomic structure and differentiation within the island remains largely unknown. The available Sicilian modern genetic data gave a picture of the current genetic structure, but the paucity of ancient data did not allow so far to make p…
I luoghi mediterranei nell’esperienza del dottorato in progettazione architettonica
2008
Cabbage and fermented vegetables: from death rate heterogeneity in countries to candidates for mitigation strategies of severe COVID-19
2021
International audience; Large differences in COVID-19 death rates exist between countries and between regions of the same country. Some very low death rate countries such as Eastern Asia, Central Europe, or the Balkans have a common feature of eating large quantities of fermented foods. Although biases exist when examining ecological studies, fermented vegetables or cabbage have been associated with low death rates in European countries. SARS-CoV-2 binds to its receptor, the angiotensin-converting enzyme 2 (ACE2). As a result of SARS-CoV-2 binding, ACE2 downregulation enhances the angiotensin II receptor type 1 (AT1 R) axis associated with oxidative stress. This leads to insulin resistance …
Poly(hydroxyalkanoate) synthase genes in pseudomonads strains, isolation and heterologous expression
2010
‘Abbo of Fleury’,
1998
Voce enciclopedica relativa ad Abbone di Fleury, con particolare riguardo alla sua attività in Inghilterra e alla sua produzione letteraria destinata agli allievi della scuola di Ramsey