Search results for "ether"

showing 10 items of 986 documents

Chemical composition of volatile and fixed oils from of Salvia argentea L. (Lamiaceae) growing wild in Sicily.

2015

The chemical compositions of the essential oil and of the non-polar extracts (petroleum ether, dichloromethane) of the aerial parts (flowers, leaves and stems) of Salvia argentea L. were determined by GC-FID and gas chromatography–mass spectrometry analysis. 14-Hydroxy-α-humulene (40.1%) was recognised as the main constituents of the essential oil of S. argentea, together with 1,3,8-p-menthatriene (12.1%), globulol (7.4%) and β-sesquiphellandrene (5.8%). Tritriacontane (9.9% and 14.1%), heptacosane (8.4% and 10.5%), hentriacontane (8.3% and 10.9%), tetradecanal (8.4% and 10.2%) and methyldotriacontane (7.9% and 7.6%) were recognised as the main constituents of the extracts in petroleum …

SesquiterpeneLinolenic AcidsPlant ScienceSalvia argentea01 natural sciencesBiochemistrylaw.inventionAnalytical ChemistryFatty Acids Monounsaturatedchemistry.chemical_compoundlawfixed oilPetroleum etherSettore BIO/15 - Biologia FarmaceuticaSalviaSicilyHentriacontanebiologyTraditional medicineChemistryvolatile componentPetroleumFlowerParaffinLinolenic AcidPlant LeaveSesquiterpenesLinolenic acidFlowersSalviaGas Chromatography-Mass Spectrometry14-hydroxy-α-humulenePlant ExtractBotanyOils VolatileEssential oilLamiaceae010405 organic chemistryPlant ExtractsOrganic ChemistrySettore CHIM/06 - Chimica Organicabiology.organism_classification0104 chemical sciencesPlant Leaves010404 medicinal & biomolecular chemistrySalvia argenteaSettore BIO/03 - Botanica Ambientale E ApplicataLamiaceaefatty acidGas chromatography–mass spectrometryNatural product research
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Persistent Organic Pollutants and Fatty Acid Profile in a Typical Cheese from Extensive Farms: First Assessment of Human Exposure by Dietary Intake

2022

Dairy products represent an important source of beneficial substances for humans. At the same time, they can expose the consumers to environmental contaminants ingested by animals through their diet, influencing their health negatively. This experiment aims to evaluate the risk and benefits related to the consumption of typical stretched cheeses, considering their fatty acid (FA) profile and persistent organic pollutants (POPs) content. Six representative farms, two of them organic, raising Cinisara cattle were selected, considering the typical extensive management systems, based on feeding of natural pasture integrated with concentrate and hay depending on the availability of forage on pas…

Settore AGR/19 - Zootecnica SpecialeGeneral VeterinarySettore CHIM/10 - Chimica Degli Alimentiautochthonous cow breedpolychlorinated biphenyls; polycyclic aromatic hydrocarbons; polybrominated diphenyl ethers; autochthonous cow breed; pasture; production season; Caciocavallo Palermitano cheese; chemical composition; fatty acidspastureCaciocavallo Palermitano cheesepolybrominated diphenyl etherSettore CHIM/09 - Farmaceutico Tecnologico Applicativopolycyclic aromatic hydrocarbonchemical compositionAnimal Science and Zoologyfatty acidpolychlorinated biphenylproduction season
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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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Sunlight-induced reactions of some heterocyclic bases with ethers in the presence of TiO2. A green route for the synthesis of heterocyclic aldehydes

2005

Settore CHIM/03 - Chimica Generale e InorganicaheterocyclesethersaldehydesTiO2sunlightPhotocatalysisPhotocatalysis; TiO2; sunlight; ethers; heterocycles; aldehydes;
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L’enigma qualificatorio dei riders. Un incontro ravvicinato tra dottrina e giurisprudenza

2021

Il saggio analizza l’art. 2 del d.lgs. n. 81 del 2015 nel contesto dell’acceso dibattito sulla qualificazione del rapporto di lavoro, soffermandosi in particolare su due tesi: quella che propone una lettura aggiornata della subordinazione al fine di adattarne gli elementi costitutivi e gli indici rivelatori alle forme di lavoro svolto attraverso piattaforme digitali; e l’altra che invece mette in evidenza la portata innovativa della disposizione sul lavoro etero-organizzato, parificato a quello subordinato quanto alla disciplina, ma da questo distinto sotto il profilo della fattispecie e ricondotto nell’area dell’autonomia. La diversità di posizioni in ordine alla qualificazione emerge dall…

Settore IUS/07 - Diritto Del LavoroQualificazione del rapporto di lavoro eteroorganizzazione riders.Qualification of contract of employment ethero-organisation riders.
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Il Polar prima del Polar: il poliziesco italo-americano tra fine Ottocento e gli anni Trenta del Novecento

2018

Tra la fine dell’Ottocento e gli anni Trenta del Novecento, alcuni Italiani immigrati negli Stati Uniti – quali, fra gli altri, Bernardino Ciambelli, Italo Stanco, Garibaldi Marto Lapolla, Louis Forgione, nonché il sodalizio letterario costituito da Michael Fiaschetti e Prosper Buranelli – si sono cimentati nel genere del poliziesco con alcuni testi che, partendo da alcune delle caratteristiche tipiche del Mystery, quali la serializzazione e l’incardinamento della fabula in uno specifico contesto urbano, insieme ad alcuni degli elementi caratteriali dei personaggi dell’Hard boiled non perdono mai di vista la peculiare ‘missione’ di denuncia politica, economica e sociale. Facendo del problem…

Settore L-FIL-LET/14 - Critica Letteraria E Letterature ComparateBetween late XIX and the first 30 years of the XX Century some Italians immigrated to the United States – such as Bernardino Ciambelli Italo Stanco Garibaldi Marto Lapolla Louis Forgione Michael Fiaschetti and Prosper Buranelli – wrote some texts that starting from the typical features of Mystery (serialization and incardination of the fabula in a specific urban context) together with some of the characteristic elements of the Hard boiled never lose sight of the peculiar 'mission' of political economic and social denunciation. Taking the political and social problems as the primary key of their works these writers want to remove the defamatory role attributed by the public opinion fomented by the press to Italian immigrated community. Their works don’t have the main intent to stage detectives that can solve a case or unmask a culprit but rather they aim to denounce social distortions corruption and injustices suffered by an entire community and not least to indicate the picture of what on the contrary that same society could have been.
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La Sicilia negli Orsi di Dino Buzzati e Lorenzo Mattotti

2022

Nella fiaba illustrata di Dino Buzzati La famosa invasione degli orsi in Sicilia (1945) e nella sua trasposizione filmica ad opera di Lorenzo Mattotti (2019) l’ambientazione siciliana è determinante. In entrambi i casi la Sicilia è un’isola con un grande vulcano – trasfigurata in un ambiente fantastico o riscritta secondo alcuni stereotipi – che i due autori utilizzano con accezioni diverse nella costituzione dell’ecosistema delle loro narrazioni. Soltanto attraverso una comparazione tra le due opere sarà possibile distinguere la rappresentazione delle due Sicilie che vengono raccontate con un intervallo di circa settanta anni. Se non si considera la storia degli Orsi soltanto una fiaba per…

Settore L-FIL-LET/14 - Critica Letteraria E Letterature ComparateSicily in Bears of Dino Buzzati and Lorenzo Mattotti · In Dino Buzzati’s illustrated fairy tale The Famous Invasion of the Bears in Sicily (1945) and its film adaptation by Lorenzo Mattotti (2019) the Sicilian setting is decisive. In both cases Sicily is an island with a large volcano – transfigured into a fantastic setting or rewritten according to certain stereotypes – that the two authors use with different meanings within the ecosystem of their narratives. Only through a comparison between the two works will it be possible to distinguish the representation of the two Sicilies which are narrated within an interval of about seventy years. If one does not consider the story of the Bears merely a children’s fairy tale using simplistic stylistic devices but on the contrary sees it as an opportunity for the author to deal with serious and complex issues such as an ante litteram Ecocritical perspective or questions of inter-group conflicts derived from Subaltern or Migration Studies the images of the two Sicilies can provide altogether new interpretations.
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Resistance to disinfection of a polymicrobial association contaminating the surface of elastomeric dental impressions.

2009

The aim of this study was to evaluate the ability to resist disinfection of a polymicrobial association contaminating the surface of dental impressions obtained with two different elastomers: a polyether (Impregum) and an addition-polymerized silicone (Elite). Impressions were contaminated with a mixture of three biofilm-forming microorganisms (Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans) and disinfected immediately after contamination, or after microbial layers were allowed to develop during a six-hour storage. Two commercial disinfectants were tested: MD 520 containing 0.5% glutaraldehyde and Sterigum Powder without glutaraldehyde. Residual contamination was recover…

Settore MED/07 - Microbiologia E Microbiologia ClinicaStaphylococcus aureusPolyether Addition-polymerized silicone Glutaraldehyde Quaternary ammonium compounds DisinfectionDental Impression MaterialsColony Count MicrobialDental DisinfectantsDisinfectionQuaternary Ammonium CompoundsResins SyntheticSettore MED/28 - Malattie OdontostomatologicheGlutaralBiofilmsCandida albicansMaterials TestingPseudomonas aeruginosaSilicone ElastomersEquipment Contamination
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Characteristics and treatment regimens across ERS SHARP severe asthma registries

2020

Little is known about the characteristics and treatments of patients with severe asthma across Europe, but both are likely to vary. This is the first study in the European Respiratory Society Severe Heterogeneous Asthma Research collaboration, Patient-centred (SHARP) Clinical Research Collaboration and it is designed to explore these variations. Therefore, we aimed to compare characteristics of patients in European severe asthma registries and treatments before starting biologicals.This was a cross-sectional retrospective analysis of aggregated data from 11 national severe asthma registries that joined SHARP with established patient databases.Analysis of data from 3236 patients showed many …

Severe asthmaPediatricsMESH: RegistriesMESH: AsthmaCross-sectional studyRespiratory SystemMedizin[SDV.MHEP.PSR]Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract0302 clinical medicineMESH: BelgiumBelgiumMedicine researchAnti-Asthmatic AgentsRegistries030212 general & internal medicine[SDV.IMM.ALL]Life Sciences [q-bio]/Immunology/Allergology10. No inequality11 Medical and Health SciencesNetherlands2. Zero hungereducation.field_of_studySHARP CRCMESH: Administration InhalationMESH: Anti-Asthmatic Agents3. Good healthEuropeItalyMESH: PolandMESH: Swedenmedicine.drugPulmonary and Respiratory Medicinemedicine.medical_specialtyMESH: HungaryPopulationInvestigació mèdicaSettore MED/10 - Malattie Dell'Apparato Respiratorio03 medical and health sciencesMESH: Cross-Sectional StudiesAdministration InhalationMESH: SpainmedicineHumanseducationAsmaRetrospective StudiesAsthmaSwedenHungaryMESH: Humansbusiness.industrySettore MED/09 - MEDICINA INTERNAMESH: ItalyMESH: Retrospective StudiesRetrospective cohort studyOriginal Articlesasthmamedicine.diseaseAsthmaClinical trialCross-Sectional StudiesClinical research030228 respiratory systemSpainMESH: NetherlandsMESH: EuropePolandbusinessBody mass indexMepolizumabEuropean Respiratory Journal
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Zwitterionic codeine-derived methacrylate monoliths for enantioselective capillary electrochromatography of chiral acids and chiral bases

2018

Thiol-ene click reaction of N-acetyl-L-cysteine methyl ester to codeine, followed by reaction with allyl isocyanate and hydrolysis to the corresponding zwitterionic chiral selector and its subsequent bonding to the surface of a methacrylate monolith provided a new chiral capillary column for enantiomer separation of chiral acids and chiral bases. First, the epoxy groups of a poly(glycidyl methacrylate-co-ethylene dimethacrylate) monolith were converted into amine residues, followed by reaction with allylglycidyl ether. In this way, a spacer arm was bonded to the surface before coating and cross-linking poly(3-mercaptopropyl methylsiloxane) (PMPMS) via radical addition (thiol-ene click react…

SiloxanesClinical BiochemistryThio-Ether02 engineering and technologyMethacrylate01 natural sciencesBiochemistryAnalytical Chemistrychemistry.chemical_compoundCapillary ElectrochromatographyLeucinePolymer chemistryMonolithSulfonylchemistry.chemical_classificationgeographyCapillary electrochromatographygeography.geographical_feature_categoryCodeine010401 analytical chemistryEnantioselective synthesisStereoisomerismHydrogen-Ion Concentration021001 nanoscience & nanotechnology0104 chemical sciencesMefloquineModels ChemicalchemistryMethacrylatesEnantiomer0210 nano-technologyELECTROPHORESIS
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