Search results for "corpus"

showing 10 items of 698 documents

Report on a very young dizygotic human twin pregnancy.

1981

Two ova implanted in one uterus were found at the autopsy of a 28-year-old woman. The ovulation age of both implantations has been estimated to be 10–12 days. The presence of two equally large corpora lutea, one in each ovary, indicates that the implanted ova originated from different ovaries. Thus, an “ovulatio biovarialis” seems to be the basis for the dizygotic twinning in this case. The case is believed to be the only documented example of a very early dizygotic, fraternal pregnancy in humans.

Adultmedicine.medical_specialtyInjury controlmedia_common.quotation_subjectUterusTwinsPoison controlAutopsyOvaryGestational AgeCorpus LuteumPregnancymedicineTwins DizygoticHumansOvulationTwin Pregnancymedia_commonGynecologyPregnancybusiness.industryOvaryObstetrics and GynecologyGeneral Medicinemedicine.diseaseSuicidemedicine.anatomical_structureFemalebusinessArchives of gynecology
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A novel L1CAM mutation in a fetus detected by prenatal diagnosis

2010

X-linked hydrocephalus is due to mutations in the L1 neuronal cell adhesion molecule (L1CAM) gene. L1 protein plays a key role in neurite outgrowth, axonal guidance, and pathfinding during the development of the nervous system. We report on a familial case diagnosed by prenatal ultrasonographic examination, with cerebellar hypoplasia, agenesis of the corpus callosum, and the bilateral overlapping of the second and third fingers of the hand. Sequencing of the L1CAM gene showed a novel missense mutation in exon 14: transition of a guanine to cytosine at position 1777 (c.1777G > C), which led to an amino acid change of alanine to proline at position 593 (Ala593Pro) in the sixth immunoglobulin …

Adultmedicine.medical_specialtyPathologyL1Neural Cell Adhesion Molecule L1Prenatal diagnosismedicine.disease_causeL1CAM L1-desease prenatal diagnosis hydrocephalus HSAS CRASH syndromeExonSettore MED/38 - Pediatria Generale E SpecialisticaPregnancyPrenatal DiagnosisInternal medicinemedicineHumansPoint MutationMissense mutationAgenesis of the corpus callosumUltrasonographyMutationbusiness.industrymedicine.diseasePedigreeFetal DiseasesEndocrinologyKaryotypingPediatrics Perinatology and Child HealthFemaleNeural cell adhesion moleculeCerebellar hypoplasia (non-human)businessHydrocephalus
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A53T-Alpha-Synuclein Overexpression Impairs Dopamine Signaling and Striatal Synaptic Plasticity in Old Mice

2010

BACKGROUND: Parkinson's disease (PD), the second most frequent neurodegenerative disorder at old age, can be caused by elevated expression or the A53T missense mutation of the presynaptic protein alpha-synuclein (SNCA). PD is characterized pathologically by the preferential vulnerability of the dopaminergic nigrostriatal projection neurons. METHODOLOGY/PRINCIPAL FINDINGS: Here, we used two mouse lines overexpressing human A53T-SNCA and studied striatal dysfunction in the absence of neurodegeneration to understand early disease mechanisms. To characterize the progression, we employed young adult as well as old mice. Analysis of striatal neurotransmitter content demonstrated that dopamine (DA…

AgingDopaminelcsh:MedicineMicechemistry.chemical_compoundHomer Scaffolding ProteinsReceptor Cannabinoid CB1lcsh:ScienceLong-term depressionNeurotransmitterChromatography High Pressure LiquidIn Situ Hybridization FluorescenceOligonucleotide Array Sequence AnalysisMice KnockoutNeuronal PlasticityMultidisciplinaryReverse Transcriptase Polymerase Chain ReactionDopaminergicNeurodegenerationGenetics and Genomics/Gene ExpressionElectrophysiologyalpha-SynucleinResearch ArticleRadioimmunoprecipitation Assaymedicine.medical_specialtyNeuronal Calcium-Sensor ProteinsHOMER1Substantia nigraNeurotransmissionBiologyNeurological DisordersInternal medicinemedicineAnimalsHumansddc:610Cyclic Nucleotide Phosphodiesterases Type 7Activating Transcription Factor 2lcsh:RNeuropeptidesmedicine.diseaseMolecular biologyCorpus StriatumMice Mutant StrainsEndocrinologyGenetics and Genomics/Disease ModelschemistrySynaptic plasticitylcsh:QCarrier ProteinsPLoS ONE
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A simplified framework to optimize MRI contrast preparation

2018

PURPOSE This article proposes a rigorous optimal control framework for the design of preparation schemes that optimize MRI contrast based on relaxation time differences. METHODS Compared to previous optimal contrast preparation schemes, a drastic reduction of the optimization parameter number is performed. The preparation scheme is defined as a combination of several block pulses whose flip angles, phase terms and inter-pulse delays are optimized to control the magnetization evolution. RESULTS The proposed approach reduces the computation time of B 0 -robust preparation schemes to around a minute (whereas several hours were required with previous schemes), with negligible performance loss. …

AgingMultiple Sclerosis[SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/ImagingComputer scienceComputationContrast MediaContext (language use)HippocampusCorpus Callosum030218 nuclear medicine & medical imagingReduction (complexity)Magnetics03 medical and health sciences0302 clinical medicineThalamusAlzheimer Disease[INFO.INFO-IM]Computer Science [cs]/Medical ImagingAnimalsHumansComputer SimulationRadiology Nuclear Medicine and imagingPoint (geometry)Gray MatterComputingMilieux_MISCELLANEOUSBlock (data storage)Flexibility (engineering)Phantoms ImagingBrainContrast (statistics)Models TheoreticalOptimal controlMagnetic Resonance ImagingRatsFemaleAlgorithmAlgorithms030217 neurology & neurosurgeryMagnetic Resonance in Medicine
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Low-dose dopamine agonist administration blocks vascular endothelial growth factor (VEGF)-mediated vascular hyperpermeability without altering VEGF r…

2006

No specific treatment is available for ovarian hyperstimulation syndrome (OHSS), the most important complication in infertile women treated with gonadotropins. OHSS is caused by increased vascular permeability (VP) through ovarian hypersecretion of vascular endothelial growth factor (VEGF)activating VEGF receptor 2 (VEGFR-2). We previously demonstrated in an OHSS rodent model that increased VP was prevented by inactivating VEGFR-2 with a receptor antagonist(SU5416).However,duetoitstoxicity(thromboembolism) and disruption of VEGFR-2-dependent angiogenic processes critical for pregnancy, this kind of compound cannot be used clinically to prevent OHSS. Dopamine receptor 2 (Dp-r2) agonists, use…

AgonistVascular Endothelial Growth Factor Amedicine.medical_specialtyCabergolinemedicine.drug_classAngiogenesisOvarian hyperstimulation syndromeNeovascularization PhysiologicBiologyDopamine agonistCapillary Permeabilitychemistry.chemical_compoundOvarian Hyperstimulation SyndromeEndocrinologyCorpus LuteumInternal medicineCabergolinemedicineAnimalsRNA MessengerErgolinesPhosphorylationRats WistarReceptors Dopamine D2Kinase insert domain receptorReceptor antagonistmedicine.diseaseVascular Endothelial Growth Factor Receptor-2RatsVascular endothelial growth factorDisease Models AnimalEndocrinologychemistryDopamine AgonistsFemalemedicine.drugEndocrinology
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‘How this holiday makes a difference’: The language of environment and the environment of nature in a cross-cultural study of ecotourism

2010

Partendo dal presupposto che le differenze culturali spesso costituiscono una fonte potenziale di problematiche traduttive, questo contributo mira a evidenziare le differenze che emergono sul piano linguistico, a livello lessicale, ma soprattutto fraseologico, in seguito a variegati orientamenti culturali che agiscono come filtri. Il linguaggio specialistico analizzato riguarda una nicchia particolare del mercato del turismo, ossia l’ecoturismo, che sta conquistando un terreno sempre più vasto in seguito ad una maggiore attenzione rivolta nei confronti di tematiche attuali, come quelle di impatto ambientale. Abbracciando una prospettiva interculturale, il lavoro indaga il diverso approccio …

AmbienteAmbiente; natura; territorio; ecoturismo; orientamenti culturalicorpus linguisticsnatureenvironment; nature; corpus linguistics; phraseology; cultural orientationsSettore L-LIN/12 - Lingua E Traduzione - Lingua Inglesecultural orientationsQuaderni del CeSLiC. Occasional papersenvironment; nature; phraseology; cultural orientations; corpus linguisticsnaturaecoturismoenvironment nature corpus linguistics phraseology cultural orientationsL-LIN/12 Lingua e traduzione - Lingua inglesephraseologyterritorioorientamenti culturalienvironment
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Les revues professionnelles comme corpus ? Un mode d'accès privilégié au spécialisé professionnel, à son discours et à sa culture

2016

International audience; La proposition, inscrite dans l’axe b de l’appel, a pour objet le « spécialisé professionnel » envisagé, à la suite de Petit (2010), comme l’une des formes d’existence du spécialisé à côté du spécialisé académique, prototypiquement réalisé dans le discours de recherche propre à une discipline, et du spécialisé « du troisième type », c’est-à-dire le spécialisé en dehors de son champ de référence. L’objet d’étude ainsi défini rejoint donc les conceptions de Gunnarsson (2009) et sera abordé dans une perspective méthodologique en posant la question de ses modalités d’accès, des modes de construction possibles des corpus correspondants et de leur potentiel pour approcher,…

Analyse de DiscoursCorpus & linguistiqueVin[ SHS.LANGUE ] Humanities and Social Sciences/LinguisticsLinguistique de corpus[SHS.LANGUE]Humanities and Social Sciences/LinguisticsDiscours académique et scientifiquecommunication spécialisée[SHS.LANGUE] Humanities and Social Sciences/Linguistics
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Le discours du guide-conférencier comme marqueur d'identité d'une institution touristique : l'apport d'un corpus oral authentique

2018

International audience; Cet article propose une analyse outillée d'un type de discours rarement étudié dans les travaux sur la communication touristique : les visites-conférences. Il s'inscrit dans une linguistique située des discours spécialisés et vise à modéliser, à partir de données authentiques, le protocole discursif sous-jacent à ces interactions, avec pour objectif de mettre au jour les récurrences pouvant être interprétées comme marqueurs de l'identité institutionnelle du guide. Après avoir circonscrit le cadre méthodologique retenu et présenté le corpus inédit compilé, la section principale propose des études de cas illustrant comment une analyse à la fois qualitative et quantitat…

Analyse de DiscoursDiscours spécialisésTourismeLinguistique de corpusMédiation culturelle[SHS.LANGUE]Humanities and Social Sciences/LinguisticsLangue-culture de spécialité[SHS.LANGUE] Humanities and Social Sciences/Linguistics
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La recherche en langues de spécialité comme analyse de discours :réflexions théorico-méthodologiques dans la recherche francophone

2017

International audience; La communication posera la question des conséquences théoriques, mais surtout méthodologiques, du postulat aujourd’hui largement admis selon lequel les langues de spécialité (selon la dénomination traditionnelle) ne sont nullement isolables en système (par exemple au travers d’une terminologie), mais seulement en discours, à travers des usages, des acteurs, des communautés discursives et des textes où c’est un système linguistique dans toute sa complexité qui est mis en oeuvre. Ce tournant de la recherche, dans l’espace francophone et au delà, peut être borné par la redéfinition de l’objet d’étude par Lerat (1995 : 20), qui envisage la ‘langue de spécialité’ comme « …

Analyse de DiscoursLSP[ SHS.LANGUE ] Humanities and Social Sciences/Linguistics[SHS.LANGUE]Humanities and Social Sciences/LinguisticsCorpusCommunication professionelleTerminologie[SHS.LANGUE] Humanities and Social Sciences/Linguistics
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Twitter en campagne politique : un exemple d’objet pour une étude interdisciplinaire en Humanités Numériques

2017

National audience; A partir de l’expérience du projet « Twitter aux Elections Européennes 2014 » développé, avec des partenaires dans 5 pays, à la Maison des Sciences de l’Homme de Dijon, la communication se concentrera sur les questions méthodologiques d’appréhension et d’exploitation d’un corpus numérique natif issu du dispositif de micro-blogging Twitter. Une attention particulière sera ainsi accordée aux opérateurs du dispositif (@, #, RT, http://) et ce qu’ils peuvent signifier en termes d’interaction médiée par ordinateur. On montrera dans quelle mesure ils rendent nécessaire une redéfinition de catégories de base en analyse du discours (qu’elle soit strictement linguistique ou davant…

Analyse de DiscoursNouveaux MediasTwitter[ SHS.LANGUE ] Humanities and Social Sciences/LinguisticsElections européennes 2014Linguistique de corpusLinguistique des médiasCommunication médiatisée par ordinateur[SHS.LANGUE]Humanities and Social Sciences/Linguistics[SHS.LANGUE] Humanities and Social Sciences/LinguisticsPolitique
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