Search results for "OPOS"

showing 10 items of 744 documents

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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Rojos y demócratas : la oposición al franquismo en la Universidad de Valencia. 1939-1975

2002

Edición ampliada de la obra "L'oposició universitària al franquisme : València 1939-1975", que fue editada en el curso 1995-1996 por DISE, revista de la Universidad de Valencia. La dirección y texto es de Benito Sanz Díaz, y la dirección técnica de Mª Ferranda Martí Campoy, directora de DISE. Se distribuyó en 9 fascículos a través de citada revista, y se hizo una edición en forma de libro. Los fascículos se dividían en texto principal, y unas separatas de colaboraciones. La investigación recoge las distintas épocas de oposición a la dictadura en la Universidad de Valencia. Analiza la caída del sindicato falangista –SEU- y la aparición del Sindicato Democrático de Estudiantes de Valencia –SD…

:CIENCIA POLÍTICA [UNESCO]UNESCO::HISTORIAUNESCO::CIENCIA POLÍTICAoposiciónMovimientos estudiantiles-Valencia-1939-1975Estudiantes universitarios-Actividad política-Valencia-1939-1975:HISTORIA [UNESCO]clandestinidadUniversidad de Valencia-1939-1975franquismoUniversidad de Valencia
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L'oposició universitària al franquisme : València 1939-1975

1996

La obra "L'oposició universitària al franquisme : València 1939-1975", fue editada en el curso 1995-1996 por DISE, revista de la Universidad de Valencia. La dirección y texto es de Benito Sanz Díaz, y la dirección técnica de Mª Ferranda Martí Campoy, directora de DISE. Se distribuyó en 9 fascículos a través de citada revista, y se hizo una edición en forma de libro. Los fascículos se dividían en texto principal, y unas separatas de colaboraciones. La investigación recoge las distintas épocas de oposición a la dictadura en la Universidad de Valencia. Analiza la caída del sindicato falangista –SEU- y la aparición del Sindicato Democrático de Estudiantes de Valencia –SDEUV-, la creación del Pa…

:CIENCIA POLÍTICA [UNESCO]UNESCO::HISTORIApartidos ilegalesUNESCO::CIENCIA POLÍTICAbrigada politico socialrepresion policialoposición al franquismodemocraciadictadura:HISTORIA [UNESCO]sindicatos cladestinos
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Hacia la ley europea del clima: las evaluaciones científicas y el futuro papel de las respuestas jurídicas de los estados miembros

2021

Los problemas climáticos son temas persistentes y omnipresentes dentro de las políticas y legislaciones contemporáneas, que exigen un enfoque interdisciplinario para promover soluciones jurídicas adecuadas para la complejidad del tema. Paradójicamente, las propagandas negacionistas, lejos de bloquear las acciones climáticas, las han propiciado, lo que ha llevado al establecimiento de un organismo científico super partes que reconociese las cuestiones climáticas a través de informes científicos avanzados: el Grupo Intergubernamental de Expertos sobre el Cambio Climático de la ONU (IPCC). Desde entonces, muchos países han usado los hallazgos del IPCC como base científica para desarrollar polí…

:CIENCIAS JURÍDICAS [UNESCO]Cambio Climático; Ley Europea del Clima; Pacto Verde Europeo IPCC; Derecho Público Comparadoas well as on the role that EU Members States? legislations will play in facing climate issues. Cambio climáticoIPCC2070-8157 22082 Revista Boliviana de Derecho 584568 2021 32 8055237 Hacia la ley europea del clima las evaluaciones científicas y el futuro papel de las respuestas jurídicas de los estados miembros ViolaEuropean Climate Lawinstead of blocking climate actionsleading to the establishment of a super partes scientific body that has acknowledged climate issues through the most advanced scientific reports: the UN Intergovernmental Panel on Climate Change (IPCC). Since thenPublic Comparative Law. 758 773demanding an interdisciplinary approach to foster legal solutions suitable for the complexity of the subject. Paradoxicallyhave fostered themEU Green DealPasquale Climate issues are persistent and pervasive topics within contemporary policies and legislationsmany countries have adopted the findings of the IPCC as scientific basis for developing strategic policies and legislation with the aim of combining adaptation and mitigation efforts. To this extentmainly focusing on the IPCC scientific basis and the proposed EU regulation related to climate changePacto Verde Europeo IPCCUNESCO::CIENCIAS JURÍDICASPacto Verde EuropeoCambio ClimáticoDerecho Público Comparadothe EU Green Deal and the future European Climate Law exemplify such contemporary attitude. This essay analyses the aforementioned assumptionsClimate changeLey Europea del Climanegationist claimsthe UN Intergovernmental Panel on Climate Change (IPCC). Since then [leading to the establishment of a super partes scientific body that has acknowledged climate issues through the most advanced scientific reports]
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El coneixement erotètic és reductible al coneixement proposicional?

2012

Defense que cal posar el focus en el coneixement erotètic i no en el pro- posicional és perquè là perspectiva contrària, que ha estat la tradicional, té com a conseqüència que es puguen produir diagnòstics erronis sobre la creença d'un subjecte, la qual cosa fa, alhora, que siga dificil explicaria seua conducta basada en la creença. Si ens fixem en el coneixement proposicional i si identifiquem el fet de creure d'una proposició que és vertadera amb el fet de creure aquesta pro- posició (amb el fet que aquesta proposició siga el contingut de la seua creença), aleshores tindrem com a resultat que dos subjectes que creuen d'una mateixa pro- posició que és ve1iadera, tenen una…

:FILOSOFÍA::Filosofía del conocimiento [UNESCO]UNESCO::FILOSOFÍA:FILOSOFÍA [UNESCO]coneixement proposicionalConeixement erotèticUNESCO::FILOSOFÍA::Filosofía del conocimiento
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Genesi geometrica delle volte centriche

1996

Un'analisi completa degli organismi voltati comporta lo studio delle molteplici componenti necessarie alla loro definizione: configurazione geometrica, sistema costruttivo, area storico-geografica di appartenenza, interpretazioni Stilistiche. L’obiettivo di questo studio è indirizzato all' analisi delle volte continue su pianta centrica definibili attraverso le leggi della geometria euclidea. L’indagine si pone all'interno dei confini relativi alla loro configurazione geometrica e il criterio adottato, svincolato da classificazioni di carattere tipologico o stilistico, propone l'identificazione di famiglie geometriche in base alla figura del poligono di base dell'impianto. Si può identifica…

A comprehensive analysis of vaulted bodies involves the study of the multiple components necessary for their definition: geometric configuration construction system historical-geographical area of belonging interpretations Stylistic. The objective of this study is directed to the 'analysis of continuous vaults on a centric plan definable through the laws of Euclidean geometry. The investigation arises within the boundaries related to their geometric configuration and the criterion adopted freed from typological or stylistic classifications proposes the identification of geometric families based on the figure of the basic polygon of the plant. An ordering process can be identified to explain the compositional process of curved-roofed central plants: that is the elaboration of a series of theoretical models developed according to an abacus referring to the basic geometries of the triangle square and pentagon is possible. It is not intended to impose a classification but to propose a study tool that thanks to a few simple compositional rules develops a very large number of configurationthe question remains as to why only a part has been used for the realization of vaulted covered centric buildings but this presumes considerations of a historical formal and constructive nature extraneous to this discussion.Settore ICAR/17 - Disegno
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MAST-RT0 SOLUTION OF 3D NAVIER STOKES EQUATIONS ON UNSTRUCTURED MESHS. PRELIMINARY RESULTS IN THE LAMINAR CASE

2021

A new numerical solver for the 3D Navier Stokes incompressible laminar problems is proposedThe governing equations are discretized over unstructured tetrahedral mesheThe proposed model is suitable for the solution of laminar flows in irregular domainsDelaunay mesh condition is not requiredSettore ICAR/01 - Idraulica
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MAST-RT0 solution of 3D Navier Stokes equations in very irregular domains. Preliminary results in the laminar case

2021

A new numerical methodology to solve the 3D Navier-Stokes equations for incompressible fluids within complex boundaries and unstructured body-fitted tetrahedral mesh is presented and validated with three literature and one real-case tests. We apply a fractional time step procedure where a predictor and a corrector problem are sequentially solved. The predictor step is solved applying the MAST (Marching in Space and Time) procedure, which explicitly handles the non-linear terms in the momentum equations, allowing numerical stability for Courant number greater than one. Correction steps are solved by a Mixed Hybrid Finite Elements discretization that assumes positive distances among tetrahedr…

A new numerical solver for the 3D Navier Stokes incompressible laminar problems is proposedThe proposed model is suitable for the solution of laminar flows in irregular domainsSettore ICAR/01 - Idraulica
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An alternative conception of PM10 concentration changes after short-term precipitation in urban environment

2018

Abstract In the article, a linear model is presented which describes a reduction of PM10 mass concentration in relation to the type of precipitation and water vapour content in the air. The model was built using covariance analysis. In studies of PM10 concentration changes, the results of 247 observations were used, which were carried out in the urban area. Concentration changes were archived during short-term (30 min) convection and large-scale rainfalls. For the determination of PM10 mass concentration, the reference method was used. To describe changes in PM10 concentration in the air after precipitation, a series of linear models were created, in which the explanatory variables were: th…

ANCOVAFluid Flow and Transfer ProcessesAtmospheric ScienceEnvironmental EngineeringCoefficient of determination010504 meteorology & atmospheric sciencesTroposphereRainLinear modelMechanical EngineeringLinear modelHumidity010501 environmental sciencesParticulatesAtmospheric sciences01 natural sciencesPollutionSnowHomoscedasticityEnvironmental scienceMass concentration (chemistry)PrecipitationAerosolWater vapor0105 earth and related environmental sciencesJournal of Aerosol Science
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CD73-generated extracellular adenosine in chronic lymphocytic leukemia creates local conditions counteracting drug-induced cell death

2011

Abstract Extracellular adenosine (ADO), generated from ATP or ADP through the concerted action of the ectoenzymes CD39 and CD73, elicits autocrine and paracrine effects mediated by type 1 purinergic receptors. We have tested whether the expression of CD39 and CD73 by chronic lymphocytic leukemia (CLL) cells activates an adenosinergic axis affecting growth and survival. By immunohistochemistry, CD39 is widely expressed in CLL lymph nodes, whereas CD73 is restricted to proliferation centers. CD73 expression is highest on Ki-67+ CLL cells, adjacent to T lymphocytes, and is further localized to perivascular areas. CD39+/CD73+ CLL cells generate ADO from ADP in a time- and concentration-dependen…

AdenosineCellular differentiationChronic lymphocytic leukemia5'-Nucleotidase; Adenosine; Adenosine Diphosphate; Adenosine Triphosphate; Antigens CD; Antineoplastic Agents Phytogenic; Apyrase; Autocrine Communication; Cell Death; Cell Differentiation; Cell Movement; Cell Survival; Etoposide; Extracellular Space; GPI-Linked Proteins; Humans; Leukemia Lymphocytic Chronic B-Cell; Paracrine Communication; Receptor Adenosine A2A; Tumor Cells Cultured; Biochemistry; Immunology; Hematology; Cell BiologyMICROENVIRONMENTCD38BiochemistryACTIVATIONAdenosine TriphosphateCell MovementPhytogenichemic and lymphatic diseasesTumor Cells CulturedChronic5'-NucleotidaseEtoposideLeukemiaCulturedCell DeathTUMOR-GROWTHApyrasePurinergic receptorCell DifferentiationHematologyLymphocyticCDTumor CellsCell biologyAdenosine DiphosphateAutocrine CommunicationLeukemiaReceptorIMMUNE SUPPRESSIONReceptor Adenosine A2ACell SurvivalImmunologyAntineoplastic AgentsAdenosinergicBiologyGPI-Linked ProteinsDAMAGE-INDUCED APOPTOSISAdenosine A2AParacrine signallingAntigens CDParacrine CommunicationmedicineHumansAntigensAutocrine signallingImmunobiologyB-CellCell BiologyDAMAGE-INDUCED APOPTOSIS; T-CELLS; IMMUNE SUPPRESSION; ZAP-70 EXPRESSION; TUMOR-GROWTH; RECEPTOR; CD73; ACTIVATION; CD38; MICROENVIRONMENTmedicine.diseaseAntineoplastic Agents PhytogenicLeukemia Lymphocytic Chronic B-CellSettore MED/15 - MALATTIE DEL SANGUET-CELLSCD73Extracellular SpaceZAP-70 EXPRESSIONCD38Blood
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