Search results for "amount"

showing 10 items of 79 documents

The Graham Bank (Sicily Channel, central Mediterranean Sea). Seafloor signatures of volcanic and tectonic controls

2018

Abstract Graham Bank is a dominant physiographic element of the NW Sicily Channel (central Mediterranean Sea), affected in the last 100 years by numerous well-documented volcanic eruptions. We present the first results of a geomorphological study where the Graham Bank region in the depth interval 7–350 m was mapped for the first time with multi-beam echosounder and high-resolution seismic and multi-channel seismic reflection profiles. We describe in high resolution the detailed geomorphological features of Graham Bank, and how the superficial expression of different process and dynamics occurring in the sub-seafloor evidence volcanic and tectonic controls on seafloor morphology across a rel…

010504 meteorology & atmospheric sciencesSettore GEO/02 - Geologia Stratigrafica E SedimentologicaSettore GEO/03 - Geologia StrutturaleSeamount010502 geochemistry & geophysics01 natural sciencesFluid seepagePaleontologyMediterranean seaEcho soundingSlope instability14. Life underwater0105 earth and related environmental sciencesEarth-Surface ProcessesgeographyFluid seepage; Graham Bank; Slope instability; Volcanic seamountgeography.geographical_feature_categoryVolcanic seamountFluid seepage Slope instability Volcanic seamount Graham BankGraham BankSeafloor spreadingTectonicsVolcanoSedimentary rockChannel (geography)Geology
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Calcareous nannofossil palaeoenvironmental reconstruction and preservation in sapropel S1 at the Eratosthenes Seamount (Eastern Mediterranean)

2019

Abstract The most recent organic carbon-enriched layer (sapropel S1) deposited at the Eratosthenes Seamount has unique features, such as an early lithological interruption, fine light silt laminae and an exceptional vertical extent that is over 25 cm thick. Here we investigate calcareous nannofossil assemblages to reconstruct very high-resolution palaeoenvironmental and palaeoceanographic variations recorded before, during and after the perturbation episode that involved the eastern Mediterranean Sea, due to the massive freshwater discharge via Nile River. Our results show that the deep chlorophyll maximum development, observed in all micropalaeontological groups from previous studies, is a…

010506 paleontologygeographyDeep chlorophyll maximumgeography.geographical_feature_category010504 meteorology & atmospheric sciencesSeamountAfrican MonsoonSedimentSapropelSiltOceanography01 natural sciencesPerturbation (geology)Seafloor spreadingDeposition (geology)PaleontologyHolococcolithSeafloor preservationOceanographyFlorisphaera profundaNutricline depthGeology0105 earth and related environmental sciencesDeep Sea Research Part II: Topical Studies in Oceanography
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Assessing the influence of the amount of reachable habitat on genetic structure using landscape and genetic graphs.

2021

Genetic structure, i.e. intra-population genetic diversity and inter-population genetic differentiation, is influenced by the amount and spatial configuration of habitat. Measuring the amount of reachable habitat (ARH) makes it possible to describe habitat patterns by considering intra-patch and inter-patch connectivity, dispersal capacities and matrix resistance. Complementary ARH metrics computed under various resistance scenarios are expected to reflect both drift and gene flow influence on genetic structure. Using an empirical genetic dataset concerning the large marsh grasshopper (Stethophyma grossum), we tested whether ARH metrics are good predictors of genetic structure. We further i…

0106 biological sciencesGene Flow0303 health sciencesgraph theoryGenetic DriftGenetic Variationlandscape geneticsGrasshoppers010603 evolutionary biology01 natural sciencesArticle[SDE.BE] Environmental Sciences/Biodiversity and Ecology03 medical and health sciencesGeneticsgenetic structureAnimalsamount of reachable habitatGenetics (clinical)Ecosystem030304 developmental biologyMicrosatellite RepeatsHeredity
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Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable

2019

Des engagements nationaux, européens et internationaux ont été pris pour maintenir et restaurer la connectivité entre habitats naturels face à la perte et à la fragmentation de ces habitats. Dans le même temps, les politiques environnementales dans différents pays mettent en oeuvre la séquence Eviter-Réduire-Compenser (ERC) pour atteindre l’objectif d’absence de perte nette de biodiversité (PPN). La séquence ERC a pour principe d’évaluer l’ensemble des impacts écologiques d’un aménagement, mais les critères et indicateurs permettant de quantifier les impacts sur la connectivité paysagère ne sont pas satisfaisants. Nous proposons une démarche opérationnelle pour évaluer les impacts environne…

0106 biological sciencesSocial Sciences and Humanities010504 meteorology & atmospheric sciencesdispersion des espècesno net loss of biodiversity010603 evolutionary biology01 natural sciencesPolitical scienceabsence de perte nette de biodiversitéGE1-350conservation policylcsh:Environmental sciences0105 earth and related environmental scienceslcsh:GE1-350environmental impact assessmentlandscape graphstrame verte et bleuegreen and blue infrastructurespecies dispersal[SHS.GEO]Humanities and Social Sciences/Geography15. Life on landquantité d’habitat atteignablepolitique de conservationEnvironmental sciencesquantité d'habitat atteignable13. Climate actiongraphes paysagersSciences Humaines et Socialesamount of reachable habitatHumanitiesévaluation des impacts environnementaux
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Uncovering Metabolic Effects of Anti-angiogenic Therapy in Tumors by Induced Metabolic Bioluminescence Imaging

2016

Induced metabolic bioluminescence imaging (imBI) is an imaging technique which enables detection of various metabolites associated with glycolysis in tumor sections. Signals captured by imBI can be used to chart the topographic distribution of lactate, glucose, pyruvate, and ATP and quantify their absolute amount. ImBi can enable us to perform metabolic classification of tumors as well as to detect metabolic changes in the glycolytic pathway associated with certain therapies, such as anti-angiogenic drugs.

0301 basic medicineChemistryAngiogenesisAnti angiogenic03 medical and health sciences030104 developmental biology0302 clinical medicineAbsolute amount030220 oncology & carcinogenesisMetabolic effectsCancer researchBioluminescence imagingBioluminescenceDistribution (pharmacology)Glycolysis
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Angiogenic response in an in vitro model of dog microvascular endothelial cells stimulated with antigenic extracts from Dirofilaria immitis adult wor…

2019

Abstract Background Angiogenesis can occur under pathological conditions when stimuli such as inflammation, vascular obstruction or hypoxia exist. These stimuli are present in cardiopulmonary dirofilariosis (Dirofilaria immitis). The aim of this study was to analyze the capacity of D. immitis antigens to modify the expression of angiogenic factors and trigger the formation of pseudocapillaries (tube-like structures) in an in vitro model of endothelial cells. Methods The expression of VEGF-A, sFlt, mEndoglin and sEndoglin in cultures of canine microvascular endothelial cells stimulated with extract of adult worms of D. immitis obtained from an untreated dog (DiSA) and from a dog treated for …

0301 basic medicineDirofilaria immitis antigenic extractsEndotheliumAngiogenesisCell SurvivalDirofilaria immitis030231 tropical medicineCellNeovascularization PhysiologicCanine microvascular endothelial cellsDirofilaria immitisBiologylcsh:Infectious and parasitic diseasesAndrologyWolbachia amount03 medical and health sciences0302 clinical medicineDogsAntigenmedicineAnimalslcsh:RC109-216Cells CulturedInflammationMatrigelAntigens BacterialAngiogenic factorsResearchEndothelial CellsParasitologia veterinàriabiology.organism_classificationIn vitroCapillariesAngiogènesi030104 developmental biologyInfectious Diseasesmedicine.anatomical_structureCell cultureAntigens HelminthParasitologyPseudocapillaries formationWolbachia
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Colorimetric quantitation of trace amounts of sodium lauryl sulfate in the presence of nucleic acids and proteins

1992

A fast and sensitive procedure for the colorimetric detection of sodium lauryl sulfate (SDS) is presented. The assay is based upon the formation of a chloroform-extractable ion pair between lauryl sulfate and methylene blue that is quantified spectrophotometrically with an estimated detection limit of 150 ng of SDS. The method is suitable for the monitoring of contaminating traces of SDS in protein or nucleic acid samples that have the potential to interfere with enzymatic manipulations such as proteolytic digest, restriction analysis, or reverse transcription. Since the procedure is extremely simple and no special equipment is required it is accessible to every researcher concerned with SD…

1303 BiochemistryTrace AmountsSodiumBiophysicschemistry.chemical_element10050 Institute of Pharmacology and Toxicology610 Medicine & healthBiochemistry1307 Cell Biologychemistry.chemical_compoundNucleic Acids1312 Molecular BiologyAnimalsSulfateColorimetryMolecular BiologyDetection limitChromatographyProteinsSodium Dodecyl SulfateCell BiologyDNAReference StandardsRatsMethylene BluechemistryNucleic acidRNA570 Life sciences; biologyCattleColorimetryQuantitative analysis (chemistry)Methylene blue1304 Biophysics
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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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Inkjet printing Ag nanoparticles for SERS hot spots

2018

A novel inkjet printing based approach is developed for the fabrication of a customizable platform on glass substrates allowing for surface enhanced Raman spectroscopy (SERS) detection of analytes up to single hot spots generated by the spontaneous aggregation of Ag nanoparticles (Ag NPs) in pL scale droplets. After drying the printed droplets under ambient conditions, trace amounts of the analyte can be detected by SERS given the proximity to NP hot spots. By employing alizarin (10-5M) as a model system and scaling the ink droplet volume from 1 nL to 10 pL, the absolute quantity of hot spots has been derived in the printed droplets allowing detecting up to a few molecules in proximity to i…

AnalyteMaterials scienceFabricationTrace AmountsGeneral Chemical EngineeringAnalytical chemistrysers raman spectroscopy nanoparticles02 engineering and technology010402 general chemistryAlizarin01 natural sciencesAnalytical Chemistrychemistry.chemical_compoundColloidraman spectroscopyEngineering (all)MoleculeChemical Engineering (all)sersInkwellGeneral EngineeringSurface-enhanced Raman spectroscopy021001 nanoscience & nanotechnology0104 chemical scienceschemistrynanoparticles0210 nano-technology
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An NDC approach to helping pensioners cope with the cost of long-term care

2018

The aim of this paper is to analyse whether it would be possible to provide retirement and long-term care benefits using the same unfunded notional defined contribution scheme. We extend the multi-state overlapping generations model developed by Pla-Porcel et al. (2016) to include two new features: a long-term care benefit graded according to the annuitant's degree of disability and a minimum pension benefit for both contingencies. This brings the model closer to the reality of social insurance and enhances its political attractiveness. The paper contains a numerical example to show how the model functions and focuses especially on the mortality rates for dependent persons, the inception ra…

AttractivenessOrganizational Behavior and Human Resource ManagementEconomics and EconometricsStrategy and ManagementPay as you gomedia_common.quotation_subjectOverlapping generations model01 natural sciencesIndustrial and Manufacturing EngineeringSocial insurance010104 statistics & probabilityEconomics050602 political science & public administration0101 mathematicsLong-term care insuranceNotional amountFunction (engineering)media_commonPensionActuarial scienceMechanical Engineering05 social sciencesMetals and Alloys0506 political scienceSocial securityLong-term careBusinessFinanceJournal of Pension Economics and Finance
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