Search results for "57"

showing 10 items of 4186 documents

El virus de la tristeza de los cítricos (CTV): desarrollo y aplicación de herramientas para establecer un sistema genético eficaz.

2009

Aunque en España los aislados más comunes de CTV son poco agresivos, en otros países suelen predominar aislados más virulentos que producen los síndromes de amarilleo (seedling yellows, SY) y acanaladuras en la madera (stem pitting, SP) en pomelo o naranjo dulce que conllevan a una disminución en la producción y calidad de los frutos. Por ello, el objetivo general de esta tesis ha sido el desarrollo de herramientas para controlar los aislados más virulentos de CTV. Para poner a punto un sistema genético eficaz que permitiera identificar los determinantes de patogenicidad de los síntomas de SY y SP se utilizó como base el aislado agresivo de origen español T318A (inductor de SY y SP), que ha…

noneProtecció vegetal i biotecnologia575
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Acciones del ácido retinoico en la diferenciación de células de neuroblastoma humano.

2006

Tesis doctoral del Departamento de Bioquímica y Biología Molecular.

noneembryonic structuresFacultat de Biològiques577
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Estudio y caracterización molecular de la producción de aminas biógenas por parte de bacterias lácticas de origen enológico.

2005

Dada la influencia negativa de la presencia de aminas biógenas en el vino, por el efecto perjudicial sobre la salud humana y por la disminución de la calidad del vino y dada también la presencia de las bacterias lácticas (BL) en los mismos, en esta tesis nos planteamos determinar la importancia de las BL en la presencia de estas aminas en el vino, así como que factores podían influir en la concentración de las mismas o en la mayor o menor producción por parte de las BL.En primer lugar, desarrollamos un método enzimático que permite analizar la concentración de histamina en vino y la producción de la misma por BL, a continuación analizamos la concentración de histamina, tiramina, feniletilam…

nonefood and beveragesFacultat de CC. Biològiques57357457
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Estudios sobre la inmunogenicidad y los mecanismos fisiopatológicos de la proteína NSP4 de rotavirus.

2005

Rotavirus es el principal agente causante de gastroenteritis viral en niños y animales jóvenes en todo el mundo. Una de las principales proteínas de rotavirus es la glicoproteína no estructural 4 (NSP4) que juega un papel crucial tanto en el ciclo replicativo de rotavirus, actuando como receptor de partículas inmaduras en el retículo endoplasmático, como en la fisiopatología de rotavirus, siendo la primera enterotoxina de origen vírico descrita hasta el momento. El objetivo de la presente tesis fue clonar y producir la glicoproteína NSP4 de diferentes cepas humanas y animales de rotavirus para así poder realizar estudios inmunogénicos tales como la caracterización de epitopos presentes en l…

nonevirusesFacultat de Biologiques579biochemical phenomena metabolism and nutrition
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Desarrollo y aplicación experimental de vectores virales basados en genomas de coronavirus para prevenir infecciones por rotavirus.

2009

Las infecciones por rotavirus son la causa más importante de gastroenteritis en niños menores de cinco años de edad. Se calcula que provocan unas 600.000 muertes anuales, principalmente en los países en vías de desarrollo. Una de las estrategias más prometedoras de desarrollo de nuevas vacunas consiste en el uso de virus recombinantes. Entre los sistemas virales de expresión de proteínas recombinantes más interesantes se encuentran los coronavirus. En este trabajo se aborda la producción de vectores virales basados en genomas del coronavirus TGEV (virus de la gastroenteritis porcina transmisible) para aplicarlos como vacunas experimentales de las infecciones por rotavirus. Para ello se han …

nonevirusesvirus diseasesFacultat de Biològiques579
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On the CAT(0) dimension of 2-dimensional Bestvina-Brady groups

2002

Let K be a 2-dimensional finite flag complex. We study the CAT(0) dimension of the `Bestvina-Brady group', or `Artin kernel', Gamma_K. We show that Gamma_K has CAT(0) dimension 3 unless K admits a piecewise Euclidean metric of non-positive curvature. We give an example to show that this implication cannot be reversed. Different choices of K lead to examples where the CAT(0) dimension is 3, and either (i) the geometric dimension is 2, or (ii) the cohomological dimension is 2 and the geometric dimension is not known.

nonpositive curvatureGroup (mathematics)20F6720F67 57M20Geometric Topology (math.GT)Group Theory (math.GR)Cohomological dimensionEuclidean distanceCombinatoricsKernel (algebra)Mathematics::Group TheoryMathematics - Geometric Topologydimension57M20Dimension (vector space)FOS: MathematicsArtin groupflag complexGeometry and TopologyArtin groupMathematics - Group TheoryZero-dimensional spaceMathematicsFlag (geometry)
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Amygdaloid projections to the ventral striatum in mice: direct and indirect chemosensory inputs to the brain reward system

2011

Rodents constitute good models for studying the neural basis of socio-sexual behaviour. Recent findings in mice have revealed the molecular identity of the some pheromonal molecules triggering intersexual attraction. However, the neural pathways mediating this basic socio-sexual behaviour remain elusive. Since previous work indicates that the dopaminergic tegmento-striatal pathway is not involved in pheromone reward, the present report explores alternative pathways linking the vomeronasal system with the tegmento-striatal system (the limbic basal ganglia) by means of tract-tracing experiments studying direct and indirect projections from the chemosensory amygdala to the ventral striato-pall…

nucleus accumbensolfactory tubercleNeuroscience (miscellaneous)emotional brainNucleus accumbensAmygdalastriatal cell bridgeslcsh:RC321-571lcsh:QM1-695Cellular and Molecular NeuroscienceBasal gangliamedicineislands of Callejalcsh:Neurosciences. Biological psychiatry. NeuropsychiatryOriginal Researchchemosensory amygdalaOlfactory tubercleVentral striatumlcsh:Human anatomyRetrograde tracingmedicine.anatomical_structureIslands of CallejaAnatomyPsychologyIslands of CallejaNeuroscienceBasolateral amygdalaNeuroscience
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Numerical Magnitude Affects Accuracy but Not Precision of Temporal Judgments

2021

A Theory of Magnitude (ATOM) suggests that space, time, and quantities are processed through a generalized magnitude system. ATOM posits that task-irrelevant magnitudes interfere with the processing of task-relevant magnitudes as all the magnitudes are processed by a common system. Many behavioral and neuroimaging studies have found support in favor of a common magnitude processing system. However, it is largely unknown whether such cross-domain monotonic mapping arises from a change in the accuracy of the magnitude judgments or results from changes in precision of the processing of magnitude. Therefore, in the present study, we examined whether large numerical magnitude affects temporal ac…

numerical magnitudeMagnitude (mathematics)Monotonic function050105 experimental psychologylcsh:RC321-57103 medical and health sciencesBehavioral Neuroscience0302 clinical medicine0501 psychology and cognitive sciencesStatistical physicslcsh:Neurosciences. Biological psychiatry. NeuropsychiatryTemporal discriminationBiological PsychiatryMathematicsWeber ratio05 social sciencesHuman NeuroscienceBrief Research ReportMagnitude processingtemporal biasPsychiatry and Mental healthNeuropsychology and Physiological PsychologyNeurologyLine (geometry)Temporal perceptiontemporal experience030217 neurology & neurosurgerytemporal perceptionFrontiers in Human Neuroscience
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Interrelationship Between Age, Gender, and Weight Status on Motor Coordination in Italian Children and Early Adolescents Aged 6–13 Years Old

2021

Although numerous evidences reported a negative correlation between motor coordination (MC) and overweight/obesity in children and adolescents, the interrelationship between age, gender, and weight status is still debatable. Hence, the aim of this cross-sectional study was to examine the association between MC and weight status according to age and gender across childhood and early adolescence in a large sample of Italian elementary and middle school students. A number of 1961 Italian school students (1,026 boys, 935 girls) was stratified in three consecutive age groups (6–7, 8–10, and 11–13 years) and four weight status categories (underweight, normal weight, overweight, and obese) accordi…

obesityEarly adolescenceOverweightPediatricsRJ1-570body weightchildrenmedicinebody weight; children; motor coordination; motor performance; motor quotient; obesity; overweight; weight statusoverweightmotor coordinationWeight statusOriginal ResearchSettore M-EDF/02 - Metodi E Didattiche Delle Attivita' Sportivebusiness.industrymotor quotientmedicine.diseaseObesityMotor coordinationweight statusmotor performancePediatrics Perinatology and Child HealthEarly adolescentsmedicine.symptomUnderweightbusinessBody mass indexSettore M-EDF/01 - Metodi E Didattiche Delle Attivita' MotorieDemography
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Association of child maltreatment subtypes and long-term physical health in a German representative sample

2018

ABSTRACT Background: Child maltreatment is a major public problem, associated with enormous consequences on the individual and socioeconomic level. Studies show a clear impact of child maltreatment on long-term physical health. However, there is a lack of analyses comprising a wide variety of subtypes of maltreatment and addressing cumulative effects of different maltreatment subtypes experienced during childhood on physical health. Objective: The objective of this analysis was to assess the association of different subtypes and the intensity of child maltreatment with long-term physical health outcomes. Methods: In a cross-sectional observational approach, a representative sample of the Ge…

obesityPsychological interventionObesidadChild abuse and neglectInfarto al Miocardio癌症心肌梗塞0302 clinical medicinelcsh:PsychiatryEnfermedad pulmonar obstructiva crónica030212 general & internal medicineStrokeClinical Research Articlediabetes05 social sciencesCáncerstrokemyocardial infarction• Studies addressing cumulative effects of different child maltreatment subtypes on physical health are sparse especially those comprising emotional and physical neglect.• Odds for obesity diabetes cancer hypertension chronic obstructive pulmonary disease history of myocardial infarction and stroke increased when any kind of child maltreatment was reported.• Growing intensity of each maltreatment subtype was associated with higher rates of all assessed conditions.• Odds for all conditions increased with increasing number of maltreatment subtypes that were experienced.Hipertensión Arterial050104 developmental & child psychologyClinical psychology虐待和忽视儿童medicine.medical_specialtyhypertension高血压lcsh:RC435-571中风physical health outcomesOddschronic obstructive pulmonary disease童年虐待肥胖糖尿病03 medical and health sciencesmedicinecancer0501 psychology and cognitive sciencesAbuso infantil y negligenciaSocioeconomic statusConsecuencias de Salud Físicabusiness.industryPublic healthCTQ treeApoplejíamedicine.diseaseObesity身体健康结果Maltrato infantil慢性阻塞性肺疾病Observational studybusinesschild maltreatmentEuropean Journal of Psychotraumatology
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