Search results for " Ly"

showing 10 items of 2487 documents

Grapevine pests in Sicily.

2008

More than twenty phytophagous species are reported associated with Sicilian vineyards. Only a quarter of them have to be considered of economic importance. Among moths, the grapevine moth Lobesia botrana (Denis & Schiffermüller) is certainly the most frequent species. It is considered the key pest on both table and wine grapes, while the incidence of the grape berry moth Eupoecilia ambiguella (Hübner) is scarce and linked to particular biotopes. Three to four flights are reported for the grapevine moth from February-March to October-November, while no data are available for the grape berry moth. Damages caused by L. botrana are strictly linked to the climatic trends during the summer period…

Settore AGR/11 - Entomologia Generale E Applicatagrape moths Jacobiasca lybica Planococcus ficus mites
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On the presence, distribution and conservation status of Lycopodium lagopus (Lycopodiaceae) in Italy

2014

During our work on the Lycopodiaceae account for the upcoming Flora Critica d’Italia (1, 2), we assessed and accepted the presence in Italy of Lycopodium lagopus (Laest. ex Hartm.) Zinserl. ex Kuzen. = L. clavatum subsp. monostachyon (Grev. & Hook.) Selander (2). Already reported by Fiori (3) as L. clavatum f. monostachyum Desv., its presence in Italy was more recently confirmed by Tribsch & Schönswetter (4) and accepted in some subsequent regional works (e.g. 5, 6), but the taxon is not recognized as distinct in the last national checklist of vascular plants (7). Lycopodium lagopus has an arctic-alpine distribution in America and Eurasia (8, 9). Initially described as a variety of L. clava…

Settore BIO/02 - Botanica SistematicaFlora Pteridophytes vascular plants LycopodiaceaeSettore BIO/03 - Botanica Ambientale E Applicata
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Contributo alla flora critica d'Italia: i generi della famiglia Lycopodiaceae

2012

Settore BIO/02 - Botanica Sistematicafelci ferns pteridophytes lycopodiophyta flora Italy
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Contributo alla Flora Critica d'Italia: le specie del genere Isoetes

2013

Settore BIO/02 - Botanica Sistematicaferns lycophytes Isoetes taxonomy flora Italy
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Conferma della presenza di Isoëtes velata A. Braun (Isoëtaceae, Lycopodiophyta) nella Sicilia occidentale

2010

Settore BIO/02 - Botanica Sistematicaflora zone umide Sicilia Isoetes velata Lycopodiophyta specie a rischio conservazione categoria IUCN
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Towards a Critical Flora of Italy: Assessing the Lycopodiophyta

2013

Settore BIO/02 - Botanica Sistematicataxonomy systematics flora Italy ferns lycophytes Lycopodiophyta Lycopodiaceae Isoetaceae Selaginellaceae
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Phytosociological and distributional researches on the grasslands of the class Lygeo-Stipetea in western Sicily.

2009

The thermo and meso-xerophilous pseudo-steppic vegetation is widespread in the driest areas of the Mediterranean Region and is primarily referred at the class Lygeo-Stipetea. This sintaxon includes communities dominated by several hemicryptophytes, which are also associated to some geophytes and therophytes. In Sicily this vegetation is distributed from sea level to 1300-1400 m, on different substrates (limestone, gypsum, schists, calcarenites, conglomerates, etc.), within the thermo and mesomediterranean belt dry to subhumid. Principally, are secondary grasslands used for grazing, localized on previously deforested areas, where the periodic burnings play a fundamental role in maintaining t…

Settore BIO/03 - Botanica Ambientale E ApplicataGrasslands Lygeo-Stipetea Phytosociology Vegetal landscape Sicily
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Borer polychaetes in seagrass sheaths: a shelter or a trophic relationship? Preliminary results based on carbon and nitrogen stable isotopes

2009

Settore BIO/07 - EcologiaPosidonia oceanica Lysidice food habit Mediterranean
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Metilazione del DNA in artrite reumatoide

2005

Lo stato di metilazione del DNA genomico e del gene PTHrP è stato valutato con tecniche molecolari e citogenetiche in artrite reumatoide (AR), patologia autoimmune caratterizzata anche da alta incidenza di linfomi e da ipercalcemia per overespressione del gene PTHrP. La metilazione del DNA, infatti, ha un ruolo critico nello sviluppo delle malattie neoplastiche; il gene PTHrP avendo tre promotori uno dei quali contiene un’isola CpG è un buon candidato per la deregolazione da alterato pattern di metilazione locale. Le indagini sulla metilazione genomica, condotte su DNA estratto da sangue periferico di pazienti e di donatori e amplificato in reazioni di Methylation-Sensitive Arbitrarily Prim…

Settore BIO/18 - Geneticainstead chromosomes of controls were almost uniformly decorated by brilliant grains. Studies on methylation of PTHrP gene promoter 2 performed on five CpG island internal sites using the Methylation-Sensitive Restriction Endonuclease Multiplex (MSREM)-PCR showed that one of the sites nearest the trascription starting point is heavy methylated in a significantly high number of RA patients. Thus RA seems to be characterized by genomewide hypomethylation associated with local hypermethylation like the most part of tumors. This result raises the possibility that susceptibility to lymphomas is related to abnormal DNA methylation levels and suggests the opportunity to evaluate the DNA methylation status in RA patientin fact the demethylating therapies together with diet and life style can act towards an increase of tumor risk. Future studies using a larger number of subjects could confirm these findings.Rheumatoid Arthritis (RA) is a chronic multisystem inflammatory disease characterized by high recurrence of lymphomas as well as hypercalcemia due to PTHrP overexpression. Because of DNA methylation plays a critical role in development of neoplasias we determined in RA patients the global DNA methylation status and local methylation pattern of the CpG island of one of the three promoters of PTHrP gene utilizing molecular and cytogenetic techniques. Investigations performed on DNA from peripheral blood of patients and donors amplified by Methylation-Sensitive Arbitrarily Primed (MeS-AP)-PCR indicated that RA is strongly associated with global DNA hypomethylation. Similarly chromosomal DNA methylation pattern analysis by indirect immunofluorescence technique with anti 5-methylcitosine antibody showed all peripheral lymphocyte metaphases from RA patients with chromosomes weakly fluorescent without discrete grain
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Stability analysis of type-2 fuzzy logic controllers

2009

The application of the direct Lyapunov method to the stability analysis of systems controlled by type-2 fuzzy logic controllers (FLC) is presented. The method is an extension of a method proposed for type-1 fuzzy systems. It is usually applied to systems described by state equations and controlled by fuzzy controllers using state variables as inputs but has been extended to controllers that have the error and the integral of error of the controlled variable as inputs. The proposed method allows to modify the controller rule base so that the controlled system is stable in the operating range defined by the manipulative variable constraints. The method is applied to the stability analysis of …

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimicilcsh:Computer engineering. Computer hardwareStability Type-2 fuzzy systems Lyapunov methodlcsh:TP155-156lcsh:TK7885-7895lcsh:Chemical engineering
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