showing 36 of ~574560 from 574555 documents

Francisco Vergara y la Academia de San Lucas de Roma

1994

MIEMBRO DE UNA DESTACADA FAMILIA DE ARTISTAS, FRANCISCO VERGARA BARTUAL (C. 1716-1761) RECIBIO SU PRIMERA FORMACION EN EL TALLER PATERNO. CUANDO HUBO COMPLETADO SU APRENDIZAJE A LOS 17 AÑOS, INGRESO DE PLENO DERECHO EN EL GREMIO DE CARPINTEROS DE VALENCIA. LOS DESEOS DE COMPLETAR SUS ENSEÑANZAS DEBIERON IMPULSARLE A MARCHAR PRIMERO A LA CORTE, ATRAIDO POR LAS OBRAS DEL PALACIO REAL, Y LUEGO A ITALIA. EN ROMA CONOCIO LA MAS MODERNA ESCULTURA DEL SETECIENTOS, MUY INFLUIDA AUN POR BERNINI, ALGARDI Y DUQUESNOY. APOYADO POR FILIPPO DELLA VALLE, EL MAS CARISMATICO ESCULTOR EN LA ROMA DE MITAD DEL SIGLO, INGRESO EN LA ACADEMIA DE SAN LUCAS Y EN LA DE DESNUDO DEL CAPITOLIO. EN LA CIUDAD ETERNA LLEV…

ExámenesAcademias de bellas artesUNESCO::HISTORIA::Historia por especialidades::Historia del arteEscultoresGremiosFormación académicaCarpinteros:HISTORIA::Historia por especialidades::Historia del arte [UNESCO]Escultura barroca

El derecho de paso inocente de los buques de guerra en tiempos de paz

1994

En este trabajo se realiza un estudio histórico-jurídico del régimen de la navegación internacional aplicable a los buques de guerra en tiempos de paz. Se estudia, principalmente, si existe conformidad o no entre las normas del Derecho internacional del mar relativas al régimen del paso inocente de los buques de guerra y la práctica internacional.

Dret internacional

Photoemission of electrons into electrolyte from undeformed and plastically deformed indium electrodes

1994

Materials sciencechemistryElectrodeInorganic chemistrychemistry.chemical_elementGeneral Materials ScienceElectrolyteElectronComposite materialIndiumJournal of Materials Science Letters

3‐D CALCULATION OF ZERO‐COMPONENT FLUX IN THREE‐PHASE THREE‐COLUMN TRANSFORMER

1994

The paper discusses the problem of space distribution of zero‐component magnetic flux generated in three‐column transformer. For 3‐D magnetic field calculation the method of integral equations was used. The numerical calculations were made for physical model of the transformer and compared with experimental results. The accuracy of the calculations of the magnetic field, achieved in the work, proves that the modelling may be used as a computer aided designing tool.

Applied MathematicsMechanicsIntegral equationMagnetic fluxComputer Science ApplicationsMagnetic fieldlaw.inventionComputational Theory and MathematicsThree-phaselawElectronic engineeringComputer-aidedElectrical and Electronic EngineeringTransformerMathematicsCOMPEL - The international journal for computation and mathematics in electrical and electronic engineering

Inherently Chiral Calixarenes

1994

Due to the nonplanarity of the basic 1 n -metacyclophane system, calixarenes and resorcarenes can be transformed into molecules with inherent chirality. Various attempts to achieve this goal are reviewed. Special emphasis is given to derivatives with C n -symmetry, including derivatives of spherand calixarenes and other calixarene-like macrocycles.

Computational chemistryChemistryCalixareneOrganic chemistryMoleculeInherent chiralitySymmetry (physics)

Data Evaluation in Population Genetics and Evolution

1994

Isozymes maybe generated by different enzyme loci (a) (isoenzymes), (b) alleles of a locus (allozymes) or (c) post-translational modifications (secondary isozymes). Differences in isozyme numbers and isoenzyme properties can be used for evolutionary studies. But quantitations of genetic variation among or within populations are obtainable only from allozyme frequencies.

chemistry.chemical_classificationEnzymechemistryEvolutionary biologyGenetic variationPopulation geneticsLocus (genetics)AlleleBiologyIsozyme

Hysteretic Systems Subjected to Delta Correlated Input

1994

The paper deals with the evaluation of the probabilistic response of a single degree of freedom elastic-perfectly plastic system subjected to a delta correlated input process. The probabilistic characterisation of the response is here obtained by considering the accumulated plastic deformations as a compound homogeneous Poisson process independent of the external input. In this case the former can be considered as an external noise acting on the linear system. A closed form solution is also obtained and the analytic expression is compared with the customary Monte-Carlo method.

symbols.namesakeAnalytical expressionsMathematical analysisLinear systemsymbolsProbabilistic logicProcess (computing)Poisson processExternal noiseClosed-form expressionSingle degree of freedomMathematics

Vives y la moderna administración pública.

1994

Para socorrer a los pobres se observan en Vives unos principios fundamentales que instrumentalizan sus propuestas públicas y que, a mi entender, son precursoras de lo que actualmente se denominan: 'principios de actuación de los servicios sociales'

Treball social

Monte Carlo Simulations of Alloy Phase Transformations

1994

The use of Monte Carlo simulation methods for study of order-disorder phase transitions in lattice models of alloys is reviewed, with an emphasis on interfacial phenomena and the kinetics of ordering and/or phase separation. Topics discussed include the attempt to predict the phase diagram of Fe-Al alloys from recent measurements of effective interaction parameters, competition between magnetic and crystallographic ordering in such alloys, and the structure of their antiphase domain boundaries. Both an interfacial roughening transition of this domain wall and interfacial enrichment phenomena are predicted. Then simulations of alloy-vacuum surfaces are discussed, and it is shown that both ca…

Condensed Matter::Materials SciencePhase transitionMaterials scienceCondensed matter physicsSpinodal decompositionPhase (matter)Monte Carlo methodDynamic Monte Carlo methodMonte Carlo method in statistical physicsKinetic Monte CarloMonte Carlo molecular modeling

Ursprung und Radiation der Primaten

1994

Substantielle Primatenfossilien sind nur aus dem Kanozoikum bekannt (R. Martin 1986). Uber die Ursprungsgruppe der Primaten1, die nach ubereinstimmender Auffassung in der spaten Oberkreide (Abb. 2.1) gelebt haben mus, besteht nach wie vor Unklarheit. Auch der Beginn der Radiation der Primaten sowie der Placentalia ist uberhaupt denkbar schlecht fossil dokumentiert, so das gegenwartig die phylogenetischen Beziehungen der Primaten zu anderen Mammalia-Ordnungen nicht zweifelsfrei bestimmt werden konnen (Fleagle 1988; Conroy 1990; R. Martin 1990; Abb. 3.1, Abb. 3.2).

Aufbrüche: die literatur Spaniens seit 1975

1994

UNESCO::CIENCIAS DE LAS ARTES Y LAS LETRASFilologías:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]Grupo CFilologías hispánicas

Teoria i història dels proverbis catalans : aplicació a l'estudi d'un corpus paremiològic del segle XVI

1994

Language Linguistics:LINGÜÍSTICA [UNESCO]UNESCO::LINGÜÍSTICALiterature Romance

Induction of gamma GT- and GST-P positive foci in the liver of rats treated with 2-nitropropane or propane 2-nitronate

1994

International audience

[SDV] Life Sciences [q-bio][SDV]Life Sciences [q-bio]RATComputingMilieux_MISCELLANEOUS

Theoretical study of the electronic spectra ofcis-1,3,5-hexatriene andcis-1,3-butadiene

1994

The electronic spectra forcis-1,3-butadiene andcis-1,3,5-hexatriene have been studied using multiconfiguration second-order perturbation theory (CASPT2) and extended ANO basis sets. The calculations comprise all singlet valence excited states below 8.0 eV, the first 3s, 3p, 3d Rydberg states, and the second 3s state. The four lowest triplet states were also studied. The resulting excitation energies forcis-hexatriene have been used in an assignment of the experimental spectrum, leading to a maximum deviation of 0.13 eV for the vertical transition energies. The calculations place the 11 B 2 state 0.04 eV below the 21 A 1 state. 16 excited states were studied incis-butadiene, using a CASPT2 o…

Valence (chemistry)Electronic correlationChemistryElectronic structuresymbols.namesakeAb initio quantum chemistry methodsExcited stateRydberg formulasymbolsChiropracticsSinglet statePhysical and Theoretical ChemistryAtomic physicsGround stateTheoretica Chimica Acta

Kalendarz śląski

1994

Aktuālas valodu un literatūras mācību problēmas

1994

Rakstu krājumā iztirzātas vairākas pedagoģiskām augstskolām un vispārizglītojošām skolām aktuālas valodu un latviešu literatūras mācību problēmas.

Angļu valoda - mācīšana un mācīšanāsLatviešu valoda - mācīšana un mācīšanāsPedagoģijaLatviešu literatūra - mācīšana un mācīšanās:HUMANITIES and RELIGION::Languages and linguistics::Other languages::Baltic languages [Research Subject Categories]Filoloģija

Fury o cómo nació John Doe

1994

Le réalisateur allemand Fritz Lang fuya en France en 1933, suite à son supposé entretiens avec Goebbels. Son premier film américan, Fury, prit à sa charge un sujet à la fois américan (le lynchage) et allemand (les mouvements de masses qui avaient fait des ravages dans l'Allemagne des années trente). Mettant en scène un démiurge, héritier des figures telles que Mabuse, Haghi ou d'autres de la période muette, Lang signa son entrée à Hollywood avec une marque décidément germanique.

UNESCO::CIENCIAS DE LAS ARTES Y LAS LETRAScine americano:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]estilo fílmicoFritz Langamerican cinema

Z production cross sections and lepton pair forward-backward asymmetries

1994

Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are measured from a sample of 1.3 million Z decays into hadrons and charged leptons taken with the ALEPH detector at LEP. A silicon-tungsten luminosity calorimeter was installed in ALEPH in 1992, permitting the determination of the absolute luminosity to a systematic precision of 0.15% (experimental) and 0.25% (theoretical). This is combined with a better understanding of the hadronic event selection and an improved tau pair selection. Including the ALEPH results of the past three years one obtains sigma(h)0 = (41.60 +/- 0.16) nb, and R(l) = 20.69 +/- 0.09. The corresponding number of light neutrin…

PhysicsAlephParticle physicsLuminosity (scattering theory)Physics and Astronomy (miscellaneous)010308 nuclear & particles physicsElectron–positron annihilationPhysicsHigh Energy Physics::PhenomenologyWeinberg angle01 natural sciencesNuclear physicsALEPH Experiment0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::ExperimentNeutrino010306 general physicsEngineering (miscellaneous)ALEPH experimentParticle Physics - ExperimentLeptonBhabha scattering

La novela y el crítico

1994

UNESCO::CIENCIAS DE LAS ARTES Y LAS LETRASFilologías:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]Grupo CFilologías hispánicas

La individualización de las relaciones laborales

1994

:CIENCIAS JURÍDICAS [UNESCO]UNESCO::CIENCIAS JURÍDICASSociology Industrial and Labor Relations

Contribution of the Experiential Model to the Analysis of Behaviour in the Cultural Field : a Conceptual and Methodological Approach, in Baker M.J. (…

1994

Contribution of the Experiential[SHS.GESTION]Humanities and Social Sciences/Business administration[SHS.GESTION] Humanities and Social Sciences/Business administration[ SHS.GESTION ] Humanities and Social Sciences/Business administrationAnalysis of Behaviour

The 2-5A System and HIV Infection

1994

The human immunodeficiency virus type 1 (HIV-1) is the etiologic agent of acquired immunodeficiency syndrome (AIDS). The progression of this retro viral disease is associated with various clinical manifestations, including the acquisition of an immunodeficient state, the frequent presence of neurological disorders, and some malignancies (reviewed in Barre-Sinoussi et al. 1983; Wong-Staal and Gallo 1985; Fauci 1988). Immunologic dysfunctions caused by HIV-1 infection include disorders in the production of cytokines (Murray et al. 1984; Abb et al. 1986). For example, a significant decrease in the production of interferon-α (IFN-α) by cultured peripheral blood mononuclear cells (PBMC) from pat…

EIF-2 kinasebiologyAcquired immunodeficiency syndrome (AIDS)RNase Pbiology.proteinmedicineDiseaseViral diseaseReceptormedicine.diseasePeripheral blood mononuclear cellVirologyRibonuclease L

Bisdihydrodiols, rather than dihydrodiol oxides, are the principal microsomal metabolites of tumorigenic trans-3,4-dihydroxy-3,4-dihydrodibenz[a,h]an…

1994

Several studies on metabolism and biological activity of tumorigenic dibenz[a,h]anthracene (DBA) and its derivatives have led to the conclusion that the M-region dihydrodiol, trans-3,4-dihydroxy-3,4-dihydro-DBA (DBA-3,4-dihydrodiol), is the precursor of the ultimate mutagenic and tumorigenic metabolite of DBA with the presumed structure of a bay-region dihydrodiol oxide. Incubations of DBA-3,4-dihydrodiol (50 microM) with the microsomal hepatic fraction of Sprague-Dawley rats pretreated with Aroclor 1254 yielded more than 13 metabolites upon separation by HPLC. anti-3,4-Dihydroxy-1,2-epoxy-1,2,3,4-tetrahydro-DBA [0.27 nmol/(nmol of P450.15 min)] could be identified for the first time by UV …

MaleStereochemistryMetaboliteToxicologyHigh-performance liquid chromatographyRats Sprague-Dawleychemistry.chemical_compoundStructure-Activity Relationshippolycyclic compoundsBenz(a)AnthracenesAnimalsEpoxide hydrolaseCarcinogenBiotransformationChromatography High Pressure LiquidMutagenicity TestsDiastereomerBiological activityRats Inbred StrainsGeneral MedicineMetabolismRatsModels StructuralchemistryMicrosomeMicrosomes LiverChemical research in toxicology

Huculskie fascynacje literackie : Jan A. Choroszy, Huculszczyzna w literaturze polskiej Wrocław 1991, s. 373

1994

Literatura Ludowa

Der christliche Sinn des Leidens. Der Christ und das Leiden

1994

Aplicación de técnicas de prospección geoeléctrica al estudio de la evolución de formas de drenaje y facies sedimentarias del cuaternario en el Valle…

1994

Con este trabajo se trata de ofrecer una primera idea acerca de la modificación de la morfología y trayectoria del drenaje, así como de la evolución de las facies sedimentarias del Cuaternario en el Valle Alto del Guadalentín (Murcia), partiendo para ello de la interpretación de varias campañas de geofísica que realizan en la zona una prospección geoeléctrica mediante S.E.V. El territorio estudiado (205 Km cuadrados, comprendidos entre los núcleos de Lorca y Puerto Lumbreras) se ubica sobre una fosa tectónica que cobija importantes espesores de materiales marinos del Mioceno medio y superior y, en menor proporción, del Plioceno y Cuaternario continental. Este último, cuya caracterización no…

UNESCO::HISTORIAGeografíaGeociencias. Medio ambienteGrupo B:HISTORIA [UNESCO]

Tratamiento de las fracturas abiertas de libia, grados I y II: estudio comparativo entre enclavijado con Ender y fijación externa

1994

Un total de 73 fracturas abiertas de tibia grados I y II han sido estudiadas retrospectivamente, 41 tratadas mediante enclavijado endomedular (Ender) y 32 con fijadores externos. Fueron clasificadas según Gustilo por su grado de exposición y por los criterios AO según el trazo. Han sido valorados en ambos grupos: tiempo de consolidación, retardos de consolidación, pseudoartrosis, infección, callos viciosos y limitaciones funcionales. El grupo de fracturas tratadas mediante enclavijado endomedular presentó un tiempo medio de consolidación de 3,3 meses, no hubo retardos de consolidación y sí 4 pseudoartrosis (10%). Las fracturas tratadas con fijador externo consolidaron en un tiempo medio de …

Medicina clínicaUNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]Ciencias de la salud

Analisis molecular de la región zerknüllt del complejo antennapedia de D.subobscura

1994

UNESCO::CIENCIAS DE LA VIDABiology Molecular:CIENCIAS DE LA VIDA [UNESCO]

Increased Serum Creatine Kinase Activity Inadequately Reflects Exercise-Induced Muscle Damage in Rats

1994

medicine.medical_specialtyIncreased serum creatine kinaseEndocrinologybusiness.industryInternal medicinemedicineGeneral MedicineMuscle damagebusinessClinical Science

Relativistic effects in quasifree deuteron electrodisintegration compared to a covariant model

1994

Deuteron disintegration by electrons is calculated in a covariant model for the quasifree region, where final-state interaction and two-body currents can be negiected, and is compared to a phenomenological approach in which one adds to the nonrelativistic one-body current relativistic contributions of lowest order and the kinematic wave-function boost. It is shown that ap/M-reduction of the relativistic theory contains the expressions of the phenomenological approach. The inclusion of relativistic contributions leads to a less frame-dependent description and the deviation from the covariant theory becomes small at low and medium energy and momentum transfers. Furthermore, the dependence of …

PhysicsNuclear TheoryHadronElementary particleElectronAtomic and Molecular Physics and OpticsRelativistic particleMomentumsymbols.namesakeQuantum electrodynamicsDirac equationsymbolsCovariant transformationRelativistic quantum chemistryFew-Body Systems

Different mechanisms of the inhibition of the transient outward current in rat ventricular myocytes.

1994

The mechanism of drug-induced inhibition of the transient outward current, Ito, has been investigated in rat ventricular myocytes using the whole cell patch clamp technique. Ito was activated by 300 ms depolarizing voltage clamp steps in 10 mV increments from −50 mV up to +40 mV. At +40 mV, Ito peaked after about 3 ms, and the time course of inactivation was appropriately described by two time constants, τfast = 17 ms and τslow = 203 ms. Verapamil, quinidine sulfate and nifedipine preferentially depressed Ito at the end of the 300 ms depolarizing voltage clamp step; the inactivation of Ito was accelerated by all drugs, whereas peak Ito was less affected. The time course of drug action at +4…

MalePotassium ChannelsVoltage clampHeart VentriclesPharmacologydigestive systemMembrane PotentialsRats Sprague-Dawleychemistry.chemical_compoundQuinidine SulfateNifedipinemedicineAnimalsVentricular FunctionPatch clampCells CulturedPharmacologyMembrane potentialCardiac transient outward potassium currentMyocardiumHeartGeneral MedicineTetraethylammonium chlorideRatsElectrophysiologychemistryBiophysicsVerapamilmedicine.drugNaunyn-Schmiedeberg's archives of pharmacology

Normal and transverse single tau polarization at the Z-peak

1994

Abstract We study normal (to the collision plane) and transverse (within the collision plane) single-τ polarization in τ pairs produced in e + e − unpolarized collisions at the Z -resonance. The transverse polarization component is sensitive to the anomalous weak-magnetic moment, whereas the normal polarization component is sensitive to a CP-violating weak-electric dipole moment. We show how these components of the single τ polarization are accessible from the angular distribution of its decay products. We define a CP violating asymmetry of the τ decay products which, with 10 7 Z ′s produced, provides a sensitivity of 2.3 × 10 −18 e ·cm for the weak-electric dipole moment.

PhysicsNuclear and High Energy PhysicsElectron–positron annihilationmedia_common.quotation_subjectTransition dipole momentFísicaObservablePolarization (waves)AsymmetryNuclear physicsTransverse planeDipoleCP violationAtomic physicsParticle Physics - Phenomenologymedia_commonPhysics Letters B

The structure of sl(2,1)-supersymmetry:irreducible representations and primitive ideals

1994

International audience

[MATH.MATH-RT]Mathematics [math]/Representation Theory [math.RT][MATH.MATH-RT] Mathematics [math]/Representation Theory [math.RT]ComputingMilieux_MISCELLANEOUS[ MATH.MATH-RT ] Mathematics [math]/Representation Theory [math.RT]

Interest of pulsed electrochemical detection for the analysis of flavor-active alcohols separated by liquid chromatography

1994

International audience

[SDV.IDA]Life Sciences [q-bio]/Food engineering[SDV.IDA] Life Sciences [q-bio]/Food engineeringComputingMilieux_MISCELLANEOUS

X-ray emission from the Vela SNR shock region: Spectral fitting with a non-equilibrium ionization model

1994

We report on the 5′ scale spectral analysis of the X‐ray emission from a region near the edge of the Vela SNR with a Non‐Equilibrium Ionization (NEI) model. We have found significant variations of temperature, density, ionization time and interstellar absorption. We have identified an overdense region with higher density and lower temperature than the surrounding medium. That can be interpreted as an ISM cloudlet recently shocked by the blast wave, not yet in thermal equilibrium. Our independent determination of the Vela SNR distance is in agreement with the most recent results based on ROSAT All‐Sky Survey data. Our analysis indicates the occurrence of fast electron‐ion energy equipartitio…

Shock waveThermal equilibriumPhysicsAstrophysics::High Energy Astrophysical Phenomenachemistry.chemical_elementAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsVelaNeonchemistryIonizationROSATElectron temperatureAstrophysics::Galaxy AstrophysicsBlast waveAIP Conference Proceedings

Quarks in Few Hadron Systems

1994

We make use of QCD-based quark models to analyze the observability of quark effects in few hadron systems. A hadron is described by a two phase picture. The dynamics of the interior (perturbative) phase consists of a mechanism to confine the elementary degrees of freedom and an asymptotic QGD type interaction. The dynamics of the exterior (non perturbative) phase is approximated by an effective mesonic lagrangian.

Quantum chromodynamicsPhysicsQuarkParticle physicsHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyHadronPhase (waves)Degrees of freedom (physics and chemistry)High Energy Physics::ExperimentObservabilityNon-perturbativeWave function