Search results for "Sima"

showing 10 items of 248 documents

Le specie alloctone invasive in Sicilia: caratterizzazione del fenomeno, strategie di colonizzazione e possibili strategie di contrasto

2014

Stem injectionSettore AGR/05 - Assestamento Forestale E SelvicolturaSolanum capsicastrumArbuscular mycorrhizal fungiAcacia cyclopMelia azedarachJuglans nigraNaturalization proceIniezione del fustoInvasioni biologicheMediterranean basinAcaciaResprouting abilityMicorrize arbuscolariSpecie legnose esoticheAilanthus altissimaControllo chimicoAilantoPinus canariensiBacino del MediterraneoSchinus molleChemical controlProcesso di naturalizzazioneInvasive alien specieBiological invasionTree of Heaven
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A New Major Triterpene Saponin from the Roots of Cucurbita foetidissima

2000

Foetidissimoside B (1), a novel triterpene saponin, was isolated from the roots of Cucurbita foetidissima. Based on spectroscopic data, especially direct and long-range heteronuclear 2D NMR analysis and on chemical transformations, the structure of 1 was elucidated as 3-O-beta-D-glucuronopyranosyl-echinocystic acid 28-O-beta-D-glucopyranosyl-(1-->3)-beta-D-xylopyranosyl(1-->3)-[beta- D-xylopyranosyl (1-->4)]-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranoside . Compound 1 did not show any ability to potentiate in vitro cisplatin cytotoxicity in a human colon cancer cell line.

StereochemistryMolecular Sequence DataSaponinPharmaceutical ScienceUronic acidPharmacognosyPlant RootsAnalytical Chemistrychemistry.chemical_compoundTriterpeneDrug DiscoveryCarbohydrate ConformationTumor Cells CulturedHumansOleanolic AcidCytotoxicityPharmacologychemistry.chemical_classificationbiologySpectrum AnalysisOrganic ChemistryGlycosideSaponinsbiology.organism_classificationCucurbitaceaeCarbohydrate SequenceComplementary and alternative medicineHeteronuclear moleculechemistryBiochemistryMolecular MedicineCucurbita foetidissimaDrug Screening Assays AntitumorJournal of Natural Products
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Effects of elevated ozone on physiological, anatomical and ultrastructural characteristics of four common urban tree species in China

2016

Fast urbanization has led to ozone (O3) being the main pollutant in summer in most of China. To assess future ground-level O3 effects on the service of urban greening species and clarify the underlying mechanism of O3 damage, four common urban greening species, Ailanthus altissima (AA), Fraxinus chinensis(FC), Platanus orientalis (PO) and Robinia pseudoacacia (RP) were exposed to non-filtered air (NF) and to elevated O3 (E-O3) in open-top chambers. E-O3 induced visible injury in all species as well as microscopic alterations such as collapse of the palisade parenchyma cells, callose accumulation, or chloroplast and mitochondrial accelerated senescence. E-O3 significantly reduced light-satur…

Stomatal conductanceAntioxidant010504 meteorology & atmospheric sciencesmedicine.medical_treatmentBOTANICAGeneral Decision Sciences010501 environmental sciencesPhotosynthesis01 natural scienceschemistry.chemical_compoundOzoneBotanymedicineUrban greening speciesPhotosynthesisAntioxidant systemEcology Evolution Behavior and Systematics0105 earth and related environmental sciencesBIOLOGIA VEGETALAilanthus altissimaEcologybiologyPlatanus orientalisRobiniaRuBisCOCallose15. Life on landbiology.organism_classificationchemistryUltrastructure13. Climate actionbiology.proteinEcological Indicators
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A nonlocal strain gradient plasticity theory for finite deformations

2009

Abstract Strain gradient plasticity for finite deformations is addressed within the framework of nonlocal continuum thermodynamics, featured by the concepts of (nonlocality) energy residual and globally simple material. The plastic strain gradient is assumed to be physically meaningful in the domain of particle isoclinic configurations (with the director vector triad constant both in space and time), whereas the objective notion of corotational gradient makes it possible to compute the plastic strain gradient in any domain of particle intermediate configurations. A phenomenological elastic–plastic constitutive model is presented, with mixed kinematic/isotropic hardening laws in the form of …

Stress (mechanics)Strain rate tensorClassical mechanicsMechanics of MaterialsMechanical EngineeringFinite strain theoryConstitutive equationInfinitesimal strain theoryGeneral Materials ScienceLevy–Mises equationsStrain rateElastic and plastic strainMathematicsInternational Journal of Plasticity
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The Neural Basis of Idea Density During Natural Spoken Language

2019

Idea density (ID) evolved as a quantification of propositional base structure. Besides its function as a measure of linguistic complexity, ID has also been used as an index of general linguistic ability. In order to find the neural basis for the processing of high or low ID during spontaneous speech, a sample of healthy adults was assessed using the functional resonance imaging (fMRI) technique; participants described pictures presented to them while in the scanner. Differential patterns of activation were observed for the low- and high-ID conditions, providing new insights into the processing correlates of ID.

Structure (mathematical logic)Linguistic sequence complexityBasis (linear algebra)Computer scienceSpeech recognitionFunction (mathematics)Differential (infinitesimal)Base (topology)Measure (mathematics)Spoken language
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Il lavoro etero-organizzato prima e dopo il caso Foodora Italia.

2019

l contributo ripropone la discussione sull’esegesi della fattispecie disciplinata dall’art. 1 comma 2 del d. lgs. n. 81 del 2015 (nel testo anteriore alla riforma del 2019) trattata dall’autore nei Colloqui Giuridici sul Lavoro del 2015 (a cura) di Antonio Vallebona per il Massimario di Giurisprudenza del Lavoro. Lo studio rigettava la tesi che il lavoro organizzato dal committente fosse la terza fattispecie e anzi con riferimento delle condizioni di applicazio­ne dimostrava la necessità di una lettura includente. La conclusione era che la nuova disciplina aveva natura antifraudolenta e determinava un allargamento (relativo) dell’area della subordi­nazione conseguente alla riduzione del cam…

This article republishes (after the Italian Supreme Court judgement n.166/2020 on the Foodora Italia case) the contribution to the exegesis of the case brought by art. 1 para­graph 2 of the d. lgs. n. 81 of 2015 (in the text before the 2019 reform) delivered by the author in the 2015's "Colloqui Giuridici sul Lavoro" (edited) by Antonio Vallebona for the "Massimario di Giurisprudenza del Lavoro". The study rejected the thesis that the job organ­ised by the client was an intermediate regulation between the employee and the self-employed ones. Indeed regarding the conditions for its application it showed the need for extensive reading. The conclusion was that the new discipline was (and is) an anti-fraudulent one. It led to a (relative) expansion of the area ofsubordination as a consequence of a reduction in the scope of coordinated self-employed work. A little more than four years after that article the Italian Supreme Court (with the judgement n.166/2020) on the Foodora Italia case addresses for the first time the issue of the hetero-organised work (by art. 1 paragraph 2 of the d. lgs. n. 81 of 2015). The Supreme Court fully adheres to the paper's thesis. So in terms of the "re­medial" function of the standardthe nature of the organisation's specific conditionand eventually reducing the legal frame for coordinated work. The fact that the procedural matter dealt with the riders was (then and now is) utterly irrelevant for the correct interpretation of such a new provision. Giving to riders of the employee status is not an effect of the peculiarit­ies of the work through digital platforms. It is a consequence of the remedial nature of such a case-law.
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A CONSTRUCTIVE APPROACH TO THE INFINITESIMAL ANALYSIS: EPISTEMOLOGIC POTENTIALS AND LIMITS OF THE "TRACTIONAL MOTION"

2012

Tractional motion foundation of geometry infinitesimal analysis
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Contribución al conocimiento de la brioflora de las simas valencianas

1988

Se da a conocer la bioflora recolectada en 21 simas valencianas, en cuyo interior se han llegado a identificar 33 táxones (7 hepáticas y 26 musgos) de los cuales Anomodon attenuatus (Hedw.) Hub, Cololejeunea rossettiana (Mass.) Schiffn., Eurhynchium praelongum (Hedw.) B.S.G. var. stokesii (Turn.) Dix., Homalia lusitanica Schimp. y Taxiphyllum wissgrillii (Garov.) Wijk. & Marg. son nuevos para la región valenciana. Asimismo se comentan algunos aspectos ecológicos de las simas y los briófitos estudiados. The collected bryoflora in 21 potholes of Valencia region (Spain) is brought to light here, 33 taxa (7 liveworts and 26 mosses) are indicated in them; some of these taxa: Anomodon attenuatus …

TáxonesBriofitos:CIENCIAS DE LA VIDA::Biología vegetal (Botánica) [UNESCO]Simas valencianas ; Táxones ; BriofitosSimas valencianasUNESCO::CIENCIAS DE LA VIDA::Biología vegetal (Botánica)
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Unbounded derivations and *-automorphisms groups of Banach quasi *-algebras

2018

This paper is devoted to the study of unbounded derivations on Banach quasi *-algebras with a particular emphasis to the case when they are infinitesimal generators of one parameter automorphisms groups. Both of them, derivations and automorphisms are considered in a weak sense; i.e., with the use of a certain families of bounded sesquilinear forms. Conditions for a weak *-derivation to be the generator of a *-automorphisms group are given.

Unbounded derivationPure mathematicsAutomorphisms groups and their infinitesimal generatorsInfinitesimalBanach quasi *-algebra01 natural sciencesMathematics::Group Theory*-Automorphisms groups and their infinitesimal generatorSettore MAT/05 - Analisi Matematica0103 physical sciencesFOS: MathematicsAutomorphisms groups and their infinitesimal generators; Banach quasi; Integrability of derivation; Unbounded derivations; Automorphisms groups and their infinitesimal generators; Banach quasi; Integrability of derivation; Unbounded derivationsBanach quasi0101 mathematicsOperator Algebras (math.OA)MathematicsGroup (mathematics)Applied Mathematics010102 general mathematicsIntegrability of derivationMathematics - Operator AlgebrasAutomorphismUnbounded derivationsFunctional Analysis (math.FA)Mathematics - Functional AnalysisBounded function010307 mathematical physicsGenerator (mathematics)
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One-dimensional nonlinear boundary value problems with variable exponent

2018

In this paper, a class of nonlinear differential boundary value problems with variable exponent is investigated. The existence of at least one non-zero solution is established, without assuming on the nonlinear term any condition either at zero or at infinity. The approach is developed within the framework of the Orlicz-Sobolev spaces with variable exponent and it is based on a local minimum theorem for differentiable functions.

Variable exponent Sobolev spacemedia_common.quotation_subject02 engineering and technology01 natural sciences0202 electrical engineering electronic engineering information engineeringDiscrete Mathematics and CombinatoricsBoundary value problemDifferentiable function0101 mathematicsDifferential (infinitesimal)P(x)-LaplacianDiscrete Mathematics and Combinatoricmedia_commonMathematicsDirichlet problemDirichlet problemApplied Mathematics010102 general mathematicsMathematical analysisZero (complex analysis)AnalysiDirichlet problem; P(x)-Laplacian; Variable exponent Sobolev spaces; Analysis; Discrete Mathematics and Combinatorics; Applied MathematicsMixed boundary conditionInfinityNonlinear system020201 artificial intelligence & image processingAnalysis
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