Search results for "bar"

showing 10 items of 7176 documents

Innovative in vitro method and permeability estimation procedure to predict drug transport across the blood-brain barrier

2014

La Barrera Hematoencefálica (BHE) es una entidad caracterizada por su naturaleza restrictiva al paso de sustancias. Las propiedades de la barrera están determinadas por la confluencia de tres componentes principales: 1) uniones celulares endoteliales con presencia de proteínas especificas intramembrana y citoplasmáticas unidas estrechamente al citoesqueleto. Esta circunstancia restringe la difusión paracelular de compuestos. Adicionalmente a las células endoteliales, la barrera presenta una membrana basal, en la cual se localizan pericitos y astrocitos, que conforman una capa que refuerza las propiedades de la barrera; 2) la presencia de transportadores de absorción y la sobreexpresión de t…

:CIENCIAS MÉDICAS::Farmacodinámica::Absorción de medicamentos [UNESCO]in vitropermeabilityblood-brain barrierUNESCO::CIENCIAS MÉDICAS::Farmacodinámica::Absorción de medicamentos
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Posttraumatic carotid-cavernous fistula: Pathogenetic mechanisms, diagnostic management and proper treatment. A case report.

2016

Journal Article; UNLABELLED Carotid-cavernous fistulas are an uncommon diseases characterized by abnormal communications between arteries and veins located in the cavernous sinus. According with Barrow´s classification they could be divided in two groups: direct and indirect. The typical symptoms showed by theses pathologies are: pulsating exophthalmos and orbital blow. The present study describes a case of direct posttraumatic carotid-cavernous fistula in a 26 years old man. Furthermore, we present the images that we used to make the diagnosis. In this light, we decided to treat this case with endovascular approach after considering several therapeutic options. The aim of the present repor…

:Diseases::Eye Diseases::Orbital Diseases::Exophthalmos [Medical Subject Headings]medicine.medical_specialtyPulsating exophthalmosFistula:Check Tags::Male [Medical Subject Headings]Case ReportOdontologíaOrbital blowExoftalmia:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]03 medical and health sciencesVenas0302 clinical medicine:Diseases::Cardiovascular Diseases::Vascular Diseases::Cerebrovascular Disorders::Carotid Artery Diseases::Carotid-Cavernous Sinus Fistula [Medical Subject Headings]Pulsating exophthalmosmedicineRare syndrome:Anatomy::Cardiovascular System::Blood Vessels::Arteries [Medical Subject Headings]030212 general & internal medicine:Anatomy::Cardiovascular System::Blood Vessels::Veins::Cranial Sinuses::Cavernous Sinus [Medical Subject Headings]General DentistryCarotid-cavernous fistulaOral Medicine and Pathologybusiness.industryCarotid cavernous fistulasSeno cavernosoEndovascular approachmedicine.disease:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludBarrow´s classification.SurgeryCavernous sinusUNESCO::CIENCIAS MÉDICAScardiovascular systemProper treatmentbusinessFístula del seno cavernoso de la carótida:Anatomy::Cardiovascular System::Blood Vessels::Veins [Medical Subject Headings]030217 neurology & neurosurgery
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Topics in Physics Beyond the Standard Model

2020

El Modelo Estándar (SM) de partículas es una teoría hermosa y extensamente contrastada. De hecho, sus éxitos son innumerables y algunas de sus predicciones, como el momento magnético anómalo de los electrones, se han confirmado con una precisión de una parte en 1010 (!). Sin embargo, y por suerte para mi doctorado, todavía hay preguntas abiertas que no se explican dentro del SM y requieren probablemente una dinámica subyacente o nueva física más allá del SM (BSM). Esta tesis explora, desde un punto de vista fenomenológico, algunas de las posibles extensiones del SM que permiten las preguntas abiertas en física fundamental: • El origen de las masas de los neutrinos • El origen de la asimetrí…

:FÍSICA [UNESCO]UNESCO::FÍSICAneutrinosbaryogenesisdark matter
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Implications of non standard scenarios in Cosmology and the very early Universe

2014

167 páginas. Tesis Doctoral del Departamento de Física Teórica de la Universidad de Valencia y del Instituto de Física Corpuscular (IFIC).

:FÍSICA [UNESCO]cosmology of theories beyond the standard modelUNESCO::FÍSICAinflationbaryogenesis
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Electromagnetic interactions of light hadrons in covariant chiral perturbation theory

2017

Las interacciones entre hadrones ligeros y campos de fotones son importantes para el estudio de la estructura de la materia y de la interacción fuerte. Sus propiedades fundamentales son descritas por la cromodinámica quántica (QCD). A energı́as elevadas, esta teorı́a ya ha sido bien comprobada con métodos perturbativos que tienen los quarks y gluones como grados de libertad. Sin embargo, a bajas energı́as, QCD es no-perturbativa y quedan muchos detalles por entender. Estas on precisamente las energı́as necesarias para describir interacciones entre hadrones a distancias superiores a su tamaño. Procesos que involucran interacciones con hadrones han sido extensamente estudiados a lo largo de l…

:FÍSICA::Física atómica y nuclear [UNESCO]UNESCO::FÍSICA::Física atómica y nuclearTeoría quiral de perturbaciones con barionesResonancia deltaPolarizabilidadesHiperonesFactores de forma electromagnéticosFotoproducción de pionesMomento dipolar eléctricoDispersión Compton
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Search for a Dark Leptophilic Scalar in e(+) e(-) Collisions

2020

Many scenarios of physics beyond the standard model predict the existence of new gauge singlets, which might be substantially lighter than the weak scale. The experimental constraints on additional scalars with masses in the MeV to GeV range could be significantly weakened if they interact predominantly with leptons rather than quarks. At an e+e- collider, such a leptophilic scalar (φL) would be produced predominantly through radiation from a τ lepton. We report herein a search for e+e-→τ+τ-φL, φL→ℓ+ℓ- (ℓ=e, μ) using data collected by the BABAR experiment at SLAC. No significant signal is observed, and we set limits on the φL coupling to leptons in the range 0.04<mφL<7.0 GeV. These bounds s…

:Kjerne- og elementærpartikkelfysikk: 431 [VDP]Electron–positron annihilationPhysics beyond the Standard ModelGeneral Physics and Astronomy01 natural sciencesElementary particlecurrent: constraintE+e- collider[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]HEP BaBarMathematical physicsPhysicstau: pair productionnew physics: search forSettore FIS/01 - Fisica Sperimentalescale: electroweak interactionelectron positron: colliding beamsModel estàndard (Física nuclear)Standard model (Nuclear physics)Monte Carlo method:Nuclear and elementary particle physics: 431 [VDP]The standard modelConfidence levelPEP-IIAnomalous magnetic momentleptonic decayScalar (mathematics)lepton: couplinganomalycoupling constant: upper limitelectron positron: annihilationNOMagnetic momentBABAR experimentlepton: coupling: high0103 physical sciencesParameter spaceBaBar; PEP-II; Rare decays;singlet: gauge010306 general physicsMètode de Montecarlomuon: magnetic momentHigh Energy Physics::PhenomenologyRare decaysSLAC PEP StorRare decay[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]BaBarElementary Particles and FieldsHigh Energy Physics::ExperimentLeptonexperimental results
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Search for a common baryon source in high-multiplicity pp collisions at the LHC

2020

Physics letters / B B811, 135849 (2020). doi:10.1016/j.physletb.2020.135849

:Kjerne- og elementærpartikkelfysikk: 431 [VDP]HadronHadron - hadron reactionHEAVY-ION COLLISIONSHigh multiplicityhiukkasfysiikkanucl-exdecay [resonance]01 natural sciencesHigh Energy Physics - ExperimentExperimentHigh Energy Physics - Experiment (hep-ex)hadron–hadron interactions LHC ALICEBarions; strong interaction; LHCALICEstrong resonance decayIonic Collisionsscattering [p p][PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Nuclear Experiment (nucl-ex)Nuclear ExperimentNuclear ExperimentBarionsPION INTERFEROMETRYhadron-hadron scatteringPhysicsLarge Hadron ColliderMesonsHadron - hadron reactionsmass: transversestrong interactionPhysicsbaryon correlations ; invariant radius ; strong hadron–hadron interactions ; strong resonance decayVDP::Kjerne- og elementærpartikkelfysikk: 431RadiusAU+AUInvariant (physics)lcsh:QC1-999quark gluon plasmaPRIRODNE ZNANOSTI. Fizika.HEAVY-ION COLLISIONS; PION INTERFEROMETRY; SIGMA(0) PRODUCTION; AU+AU; COLLISIONS; FEMTOSCOPY; SYSTEMS; PB:Nuclear and elementary particle physics: 431 [VDP]CERN LHC CollVDP::Nuclear and elementary particle physics: 431Transverse massLHCPBParticle Physics - Experimentbaryon correlationsCOLLISIONSNuclear and High Energy Physicsp p: scatteringHigh Energy Physics; ExperimentcollectiveFOS: Physical sciences[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]530114 Physical sciencesNuclear physicsHadron - hadron reactions; LHCbaryon baryon: correlationSYSTEMSresonance: decay0103 physical sciencesfemtoscopyddc:530Nuclear Physics - ExperimentHigh Energy Physics010306 general physicshadron hadron: interactioninteraction [hadron hadron]010308 nuclear & particles physicshep-exhadron-hadron scattering ALICE experiment femtoscopySIGMA(0) PRODUCTIONHigh Energy Physics::PhenomenologyALICE experimentcorrelation [baryon baryon]Kaonsstrong hadron–hadron interactionsNATURAL SCIENCES. Physics.invariant radiusBaryonKaons; Ionic Collisions; Mesonstransverse [mass]Antiproton13000 GeV-cms/nucleonHigh Energy Physics::Experimentlcsh:Physicsexperimental results
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Search for a Stable Six-Quark State at BABAR

2019

Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange six-quark state in Upsilon -&gt; S anti-Lambda anti-Lambda decays based on a sample of 90 million Upsilon(2S) and 110 million Upsilon(3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined Upsilon(2S,3S) -&gt; S anti-Lambda anti-Lambda branching fraction in the range (1.2-1.4)x10^-7 are derived for m_S &lt; 2.05 GeV. These bounds set stringent limits on the existence of such exotic particles.

:Kjerne- og elementærpartikkelfysikk: 431 [VDP]branching ratio: upper limitElectron–positron annihilationBound stateGeneral Physics and AstronomyBaBar experimentQuarksUpsilon(10355): rare decayUpsilon(10355): electroproductionUpsilon(10020): branching ratioparticle: exoticupsilon mesons: hadronic decay01 natural sciencesdecayHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)Upsilon(10020): electroproductionBound state[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]PhysicQCQBExotic particlesPhysicsnew physics: search forSettore FIS/01 - Fisica Sperimentaleelectron positron: colliding beamsdetector limits decay:Nuclear and elementary particle physics: 431 [VDP]ParticlesDark matter (Astronomy)Confidence levelbaryon: dark matterUpsilon(10020): rare decayBranching fractionMatèria fosca (Astronomia)QuarkParticle physicsDark matterFOS: Physical sciencesLambda: pair productionelectron positron: annihilationPartícules (Matèria)NOPhysics and Astronomy (all)BABAR experiment0103 physical sciencesAtomic physicUpsilon(10355): branching ratio010306 general physicsdetectorBranching fractiondark matter: massState (functional analysis)stabilitySLAC PEP StorHEPA-stableBaBarElementary Particles and FieldsHigh Energy Physics::Experimentlimitsexperimental results
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First study of the two-body scattering involving charm hadrons

2022

Physical review / D 106(5), 052010 (2022). doi:10.1103/PhysRevD.106.052010

:Kjerne- og elementærpartikkelfysikk: 431 [VDP]charmed mesoncorrelation [momentum]heavy flavourhiukkasfysiikkaHigh Energy Physics - ExperimentnukleonitHigh Energy Physics - Experiment (hep-ex)ALICENucleon-scatteringscattering [p p][PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]BaryonsCollisionsNuclear Experiment (nucl-ex)EXCHANGENuclear ExperimentNuclear ExperimentBARYONSMesonscharm hadronsstrong interactionnucleonVDP::Kjerne- og elementærpartikkelfysikk: 431MESONSexperimental results ; pp: scattering ; momentum: correlation ; nucleon ; isospin ; charmed meson ; D- ; D+ ; strong interaction ; ALICE ; scattering length ; correlation: two-particle ; Coulomb:Nuclear and elementary particle physics: 431 [VDP]PARTIAL-WAVE ANALYSISVDP::Nuclear and elementary particle physics: 431D+D-Particle Physics - ExperimentHeavy-ion physics heavy flavour charm hadronscorrelation: two-particleCOLLISIONSp p: scatteringNuclear and High Energy PhysicsFOS: Physical sciencesPARTIAL-WAVE ANALYSIS; NUCLEON-SCATTERING; COLLISIONS; EXCHANGE; BARYONS; MESONS[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]530114 Physical sciencesheavy-ion physics; charm; heavy flavourNUCLEON-SCATTERINGisospinHeavy Ion ExperimentsPartial-wave analysisNuclear Physics - Experimentsirontaddc:530two-particle [correlation]Nuclear PhysicsHigh Energy Physics::Phenomenologymomentum: correlationExchangeHeavy-ion physicsscattering lengthCoulombcharmexperimental results
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Constantí Llombart, dinamitzador de la Renaixença valenciana

2015

Constantí Llombart (València 1848-1893) fou un escriptor que gaudí d’una notable projecció, inicialment, entre les classes populars de la València del seu temps. Sensible als ideals republicans, però, sobretot, gràcies a la seua dedicació periodística -de caire satíric fonamentalment- i, també, al seu interés per bastir una sèrie de plataformes cíviques i editorials amb què donar difusió als ideals renaixencistes, es pot afirmar que la seua fou una contribució d’una vàlua estratègica impagable per al desenvolupament del valencianisme en les primeres dècades del segle XX. Tot i la importància que cal atribuir a Constantí Llombart en un període tan decisiu per a la història de la nostra lleng…

:LINGÜÍSTICA::Lingüística aplicada::Lengua y literatura [UNESCO]UNESCO::LINGÜÍSTICA::Lingüística aplicada::Lengua y literaturarenaixençaconstantí llombartliteraturabiografia
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