Search results for " (ROS)"
showing 10 items of 428 documents
Studies on the genus Atriplex (Chenopodiaceae) in Italy. VIII. Names published by Vincenzo Tineo and Michele Lojacono-Pojero
2023
The typification of the Atriplex names published by Vincenzo Tineo and Michele LojaconoPojero is discussed. Atriplex ambigua, A. dealbata, A. graeci, A. halimoides, A halimoides var. glomerata, A. halimoides var. perglauca, A. polyphylla, and A. ratundifolia are neo- or lectotypified on specimens preserved at FI or PAL and ynonymized with A. glauca (= A. dealbata), A. halimus (= A. halimoides = A. halimoides var. glomerata = A. halimoides var. perglauca), A. rosea (= A. ambigua = A. graeci) and A. tornabenei (= A. polyphylla = A. rotundifolia). The Tineo’s A. arenaria, previously considered as replaced synonym of A. tornabenei, is clarified and typified (neotype) on a specimens deposited at…
New data on diversity of Pyrus (Rosaceae) in Sicily
2010
Erica sicula subsp. sicula in: Schede per una Lista Rossa della Flora vascolare e crittogamica Italiana
2012
Lista Rossa IUCN della Flora Italiana. 1. Policy Species e altre specie minacciate
2013
As part of the Mediterranean global biodiversity hotspot, the Italian flora is particularly rich of species, many of them endemic to restricted territories. In some areas of Italy endemic plant species reach very high percentages, between 13% and 20% of the local flora. However, plant diversity in the Mediterranean Basin is facing several threats due to changes of the current socio-economic dynamics. Italy is not an exception and urgent conservation measures are needed to halt the loss of biodiversity and preserve the numerous threatened species. This volume is the output of a project started in 2012, funded by the Italian Ministry of Environment for the Protection of Land and Sea and carri…
The trophic transfer of persistent pollutants (HCB, DDTs, PCBs) within polar marine food webs.
2017
Biomagnification (increase in contaminant concentrations at successively higher levels of trophic web), is a process that can transversally impair biodiversity and human health. Most research shows that biomagnification should be higher at poles with northern sites having a major tendency to biomagnify Persistent Organic Pollutants (POPs) through their marine food webs. We investigated the biomagnification degree into two marine trophic webs combining carbon and nitrogen stable isotopes and POP analyses. We showed that the Antarctic trophic web was more depleted than the sub-Arctic one and the differences highlighted for the basal part could explain the difference in length between them. Co…
Long-term exposure to submicromolar arsenite induces bypass of the spindle assembly checkpoint in mammalian cells
2008
Mitosis is regulated by checkpoints that delay mitotic progression when chromosome segregation errors occur. Inaccuracy in checkpoint processes can lead to chromosome instability both in number and structure (CIN). Arsenic is reported to induce CIN by perturbing mitotic spindles and checkpoints, however, its carcinogenic mechanisms are poorly understood. We previously studied the long-term progression of chromosomal instability in V79 cells treated acutely with arsenite (10 M, 24 hr) followed by growth in arsenic-free medium for 120 cell generations, and found time-dependent increase of aneuploid cells. Here, we treated V79-derived G12 cells with sub-lethal doses (0.1-1.0 µM) of arsenite f…
Primo contributo sui depositi argillosi a terra rossa dell'Abisso del Vento, Isnello (PA).
2004
Il rumore del tempo e la patina dell'architettura
2014
All’interno del libro che intende essere un contributo su un tema complesso e, forse, tra i più travisati della cultura architettonica come quello dell'architettura mediterranea, si inserisce il saggio “Il rumore del tempo e la patina dell’architettura”. In tale scritto l’autore tratteggia il ruolo del tempo, cronologico ed atmosferico, come uno dei materiali più preziosi dell’architettura. Sciascia entra in argomento ricordando il comportamento sui generis del pittore E. Munch che sottoponeva le sue tele alla cosiddetta “cura da cavalli”, lasciandole esposte alle intemperie perché convinto che i colori si combinassero meglio e conclude riferendosi all’esperienza della casa di Luis Barragán…
Rosario e Napoleone Cutrufelli
2011
L’archivio Cutrufelli conserva una documentazione piuttosto ampia dell'attività di tre generazioni di ingegneri, Rosario, Napoleone e Rosario Jr., consegnandoci, oltre che un osservatorio sull’edilizia della città e sull’urbanistica siciliana, anche, in trasparenza, un quadro dell’evoluzione della figura dell’ingegnere nell’arco di tutto il Novecento.
Binari, spirale, orizzonte
2012
Europa. La guerra ha distrutto muri, case, segnato strade, scavato fossi fra i popoli. In un paese qualsiasi, un bambino affamato, uno qualsiasi, uno dei tanti, forse quello di “Germania Anno Zero”. Forse ce la farà e diventerà un uomo qualsiasi. O un grande uomo. Colline liguri, un partigiano ferito muore. Da qualche parte in Unione Sovietica il gelo si allontana e risparmia uno dei suoi ventitre milioni di morti contro il nazifascismo.