Search results for "O2"

showing 10 items of 1115 documents

2020

Background To date, microRNAs (miRs) carried in extracellular vesicles (EVs) in response to exercise have been studied in blood but not in non-invasively collectable body fluids. In the present study, we examined whether six exercise-responsive miRs, miRs-21, -26, -126, -146, -221, and -222, respond to acute endurance exercise stimuli of different intensities in sweat. Methods We investigated the response of miRs isolated from sweat and serum EVs to three endurance exercise protocols: (1) maximal aerobic capacity (VO2max ), (2) anaerobic threshold (AnaT), and (3) aerobic threshold (AerT) tests. Sauna bathing was used as a control test to induce sweating through increased body temperature in…

0301 basic medicinemedicine.medical_specialtyintegumentary systemCD63Physiologybusiness.industryVO2 max030204 cardiovascular system & hematologyExtracellular vesiclesSWEAT03 medical and health sciencesSauna bathing030104 developmental biology0302 clinical medicineEndocrinologyEndurance trainingPhysiology (medical)Internal medicinemicroRNAMedicinebusinessAnaerobic exerciseFrontiers in Physiology
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The effects of fractional CO2 laser, Nano-hydroxyapatite and MI paste on mechanical properties of bovine enamel after bleaching

2017

Background This study investigated the effect of post bleaching treatments to the change of enamel elastic modulus and microhardness after dental bleaching in- vitro. Material and Methods Fifty bovine incisor slab were randomly assigned into five groups (n=10). The samples were bleached for three times; 20 minutes each time, by 40% hydrogen peroxide. Next it was applied fractional CO2 laser for two minutes, Nano- hydroxy apatite (N-HA) and MI-paste for 7 days and 2 minutes per day. The sound enamel and bleached teeth without post treatment remained as control groups. The elastic modulus and microhardness were measured at three times; 24 hours, 1 and 2 months. Data were statistically analyze…

030213 general clinical medicineMaterials scienceIndentation hardnessApatite03 medical and health scienceschemistry.chemical_compound0302 clinical medicinestomatognathic systemBovine enamelComposite materialHydrogen peroxideGeneral DentistryElastic modulusCo2 laserEnamel paintResearchEsthetic Dentistry030206 dentistry:CIENCIAS MÉDICAS [UNESCO]stomatognathic diseaseschemistryNano hydroxyapatitevisual_artUNESCO::CIENCIAS MÉDICASvisual_art.visual_art_mediumsense organsJournal of Clinical and Experimental Dentistry
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Maternal Perfluoroalkyl Substances, Thyroid Hormones, and DIO Genes: A Spanish Cross-sectional Study

2021

Results of studies on perfluoroalkyl substances (PFASs) and thyroid hormones (THs) are heterogeneous, and the mechanisms underlying the action of PFASs to target THs have not been fully characterized. We examined the relation between first-trimester maternal PFAS and TH levels and the role played by polymorphisms in the iodothyronine deiodinase 1 (DIO1) and 2 (DIO2) genes in this association. Our sample comprised 919 pregnant Spanish women (recruitment = 2003-2008) with measurements of perfluorohexanesulfonic acid (PFHxS), perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), perfluorononanoic acid (PFNA), thyroid-stimulating hormone (TSH), total triiodothyronine (TT3), and fr…

0303 health sciencesmedicine.medical_specialtyPerfluorooctanesulfonic acidTriiodothyronineCross-sectional studyDIO2General Chemistry010501 environmental sciencesBiology01 natural sciencesPerfluorononanoic acid03 medical and health scienceschemistry.chemical_compoundEndocrinologychemistryInternal medicinemedicineEnvironmental ChemistryPerfluorooctanoic acidGene030304 developmental biology0105 earth and related environmental sciencesHormoneEnvironmental Science & Technology
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A. BARTOLOTTA (ed.), The Greek Verb. Morphology, Syntax, and Semantics. Proceedings of the 8th International Meeting on Greek Linguistics, Agrigento …

2019

1135-9560 8276 Studia philologica valentina 536436 2019 21 7225825 A. BARTOLOTTA (ed.)UNESCO::CIENCIAS DE LAS ARTES Y LAS LETRASThe Greek Verb. MorphologyAgrigento October 1-3and Semantics. Proceedings of the 8th International Meeting on Greek LinguisticsLouvain-la-NeuveHélène 250 253 https://pages.uv.es/SPhV/cas/numero21.wiki:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]2014. [ISBN 978-90-429-27-22-3] Perdicoyianni-Paléologou2009SyntaxPeeters//pages.uv.es/SPhV/cas/numero21.wiki [Hélène 250 253 https]
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Compensation of Oxygen Transmittance Effects for Proximal Sensing Retrieval of Canopy–Leaving Sun–Induced Chlorophyll Fluorescence

2018

Estimates of Sun–Induced vegetation chlorophyll Fluorescence (SIF) using remote sensing techniques are commonly determined by exploiting solar and/or telluric absorption features. When SIF is retrieved in the strong oxygen (O 2 ) absorption features, atmospheric effects must always be compensated. Whereas correction of atmospheric effects is a standard airborne or satellite data processing step, there is no consensus regarding whether it is required for SIF proximal–sensing measurements nor what is the best strategy to be followed. Thus, by using simulated data, this work provides a comprehensive analysis about how atmospheric effects impact SIF estimations on proximal sensing, regarding: (…

1171 GeosciencesFLUXspectral fitting method (SFM)AIRBORNE010504 meteorology & atmospheric sciencesScience0211 other engineering and technologiesFlux02 engineering and technologyfraunhofer line discriminator (FLD)Surface pressure01 natural sciencesO2 transmittanceAtmospheric radiative transfer codesatmospheric pressureFIELD SPECTROSCOPYTransmittanceAstrophysics::Solar and Stellar AstrophysicsSPACESpectral resolutionAbsorption (electromagnetic radiation)021101 geological & geomatics engineering0105 earth and related environmental sciencesRemote sensingproximal sensing4112 Forestrysun-induced chlorophyll fluorescence (SIF)Atmospheric pressureSTRESS DETECTIONPHOTOSYNTHESISQAtmospheric correctionO-2 transmittanceair temperatureREFLECTANCEsun–induced chlorophyll fluorescence (SIF)Physics::Space Physicssun–induced chlorophyll fluorescence (SIF); proximal sensing; O<sub>2</sub> transmittance; fraunhofer line discriminator (FLD); spectral fitting method (SFM); air temperature; atmospheric pressureLUMINESCENCEGeneral Earth and Planetary SciencesEnvironmental scienceABSORPTION-BANDSAstrophysics::Earth and Planetary AstrophysicsVEGETATIONRemote Sensing
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ZrO2 Based materials as photocatalysts for 2-propanol oxidation by using UV and solar light irradiation and tests for CO2 reduction

2018

Abstract Bare ZrO2, Ce doped ZrO2 and Er doped ZrO2 samples have been prepared by a hydrothermal process and have been used as photocatalysts for 2-propanol oxidation reaction in gas solid regime. Moreover, some preliminary tests have been carried out for CO2 reduction. The samples were physico-chemically characterized and both bare and doped ZrO2 based materials resulted active for oxidation and reduction reactions by using UV and solar irradiation. The reactivity results have been correlated with the compositional, structural and morphological features of the photocatalysts.

2-Propanol oxidation; Ce doped ZrO2; CO2 reduction; Er doped ZrO2; Photocatalysis; ZrO2; Catalysis; Chemistry (all)Materials science02 engineering and technology010402 general chemistryPhotochemistry01 natural sciencesRedoxHydrothermal circulationCatalysisCatalysisPropanolchemistry.chemical_compoundPhotocatalysiZrO2Reactivity (chemistry)IrradiationPhotocatalysisDoping2-Propanol oxidationChemistry (all)Er doped ZrO2General Chemistry021001 nanoscience & nanotechnology0104 chemical sciencesCe doped ZrO2chemistryCO2 reductionPhotocatalysis2-Propanol oxidation Ce doped ZrO2 CO2 reduction Er doped ZrO 2 Photocatalysis ZrO2Settore CHIM/07 - Fondamenti Chimici Delle Tecnologie0210 nano-technologyCO2reduction
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Impact on Air Quality of the COVID-19 Lockdown in the Urban Area of Palermo (Italy).

2020

At the end of 2019, the first cases of coronavirus disease (COVID-19) were reported in Wuhan, China. Thereafter, the number of infected people increased rapidly, and the outbreak turned into a national crisis, with infected individuals all over the country. The COVID-19 global pandemic produced extreme changes in human behavior that affected air quality. Human mobility and production activities decreased significantly, and many regions recorded significant reductions in air pollution. The goal of our investigation was to evaluate the impact of the COVID-19 lockdown on the concentrations of the main air pollutants in the urban area of Palermo (Italy). In this study, the trends in the average…

2019-20 coronavirus outbreak010504 meteorology & atmospheric sciencesCoronavirus disease 2019 (COVID-19)Urban PopulationHealth Toxicology and MutagenesisPneumonia ViralAir pollutionlcsh:Medicine010501 environmental sciencesUrban areamedicine.disease_cause01 natural sciencesArticleSettore BIO/01 - Botanica GeneralelockdownAir pollutantsEnvironmental healthAir PollutionmedicineHumansAir quality indexPandemics0105 earth and related environmental sciencesgeographygeography.geographical_feature_categorylcsh:RPublic Health Environmental and Occupational HealthOutbreakCOVID-19Particulatesair qualityurban environmentCO–NO2–O3–PM10Settore GEO/08 - Geochimica E VulcanologiaAir quality COVID-19 CO–NO2–O3–PM10 Lockdown Urban environmentItalyQuarantineEnvironmental scienceCoronavirus InfectionsInternational journal of environmental research and public health
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Thermomineral waters of Greece: geochemical characterization

2020

75 °C). In terms of pH most results vary from 5.5 to 823 °C) ii) warm (23 40 °C) iii) thermal (40 75 °C) and iv) hyperthermal (&gtfew springs show either very low pH (&lt10) proposing serpentinization processes. Regarding TDS concentrations collected waters can be subdivided into low salinity (up to 1.5 g/L) brackish (up to 20 g/L) and saline (up to 43 g/L). The medium high salinities can be justified by mixing with sea water and/or strong waterrock interaction processes. Isotope composition of O and H ranges from 12.7 to +2.7 ‰ SMOW and from 91 to +12 ‰ SMOW respectively and is generally comprised between the Global Meteoric Water Line and the East Mediterranean Meteoric Water Line. Only few water samples show a positive shift for δ18O possibly related to high temperature waterrock interaction processes. Carbon dioxide (18 997000 μmol/mol) or N2 (1100 989000 μmol/mol) or CH4 (&ltMany geothermal areas of Greece are located in regions affected by Miocene or Quaternary volcanism and in continental basins characterised by elevated heat flow. Moreover the majority of them is found along the coast as well as in islands of the Aegean Sea and thus thermal water is often brackish to saline due to marine intrusion into costal aquifer. In the present study almost 300 thermal and cold mineral water samples were collected along the Hellenic territory with their physicochemical parameters (temperature pH electrical conductivity and Eh) and the amount of bicarbonates (titration with 0.1N HCl) being determined in situ. Additionally gases found either in free or dissolved phase were sampled. Both water and gas samples were analysed at the INGVPa laboratories for major ions (Ion Chromatography) silica (Inductively Coupled Plasma Optical Emission Spectrometry) chemical composition of free and dissolved gases (Gas Chromatography) water isotopes (O and H) and carbon and helium isotopes of free and dissolved gases (Mass Spectrometry). The temperature of the investigated waters ranges from 6.5 to 98°C pH from 1.96 to 11.98 whilst Total Dissolved Solids (TDS) from 0.06 to 43 g/L. Based on the temperature parameter waters can be divided into four groups: i) cold (&lt0.5 913000 μmol/mol) are the prevailing gas species found in the studied sites. The δ13CCO2 values ranged from 20.1 to +8.5 ‰ whilst the isotope ratio of He from 0.21 to 6.71 R/RA.4) suggesting interaction with H2Srich gases or very high pH values (&gtSettore GEO/08 - Geochimica E Vulcanologia
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"Table 31" of "Search for photonic signatures of gauge-mediated supersymmetry in 8 TeV $pp$ collisions with the ATLAS detector"

2015

The total NLO cross sections with uncertainties for the electroweak production GGM signal grid for the photon+j analysis.

8000.0Physics::Instrumentation and DetectorsHigh Energy Physics::PhenomenologyIntegrated Cross SectionSUSYCross SectionSIGStatistics::ComputationP P --&gt; CHARGINO1 CHARGINO1 XP P --&gt; NEUTRALINO2 NEUTRALINO2 XInclusiveP P --&gt; CHARGINO1 NEUTRALINO2 XProton-Proton ScatteringHigh Energy Physics::ExperimentSupersymmetry
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FLUJOS DE CO2 EN ECOSISTEMAS MEDITERRÁNEOS: INFLUENCIA DE FACTORES BIÓTICOS Y ABIÓTICOS

2016

Tesis Universitat de València, Departament de Microbiologia i Ecologia, Programa de Doctorat en Biodiversitat. Desarrollada en la Estación Experimental de Zonas Áridas en [EN]Almería

:CIENCIAS DE LA VIDA::Biología vegetal (Botánica) ::Ecología vegetal [UNESCO]ecología del sueloUNESCO::CIENCIAS DE LA VIDA::Biología vegetal (Botánica) ::Ecología vegetalcambio climáticointeracción planta-suelo:CIENCIAS DE LA TIERRA Y DEL ESPACIO::Ciencias del suelo (Edafología) ::Biología de suelos [UNESCO]respiración del sueloflujos de CO2UNESCO::CIENCIAS DE LA TIERRA Y DEL ESPACIO::Ciencias del suelo (Edafología) ::Biología de suelos
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