Search results for " Permanent"

showing 10 items of 144 documents

Maximum Torque Per Ampere control algorithm for low saliency ratio interior permanent magnet synchronous motors

2017

This paper presents an investigation on the comparison between the Maximum Torque Per Ampere (MTPA) and the Field Orientation Control (FOC) algorithms for interior permanent magnet synchronous machines (IPMSMs). In particular, this study was carried out on a small-power IPMSM with low salience ratio. Both control algorithms have been implemented in the Matlab/Simulink environment, obtaining promising results.

010302 applied physicsControl algorithmMaximum torque per ampere control algorithmPermanent magnet synchronous motorComputer scienceRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesField oriented control algorithmField orientationSalience (neuroscience)Control theoryMagnet0103 physical sciences0202 electrical engineering electronic engineering information engineeringInterior permanent magnet synchronous machineMATLABAmperecomputerMaximum torquecomputer.programming_language
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Experimental comparison of two control algorithms for low-saliency ratio interior permanent magnet synchronous motors

2018

In this paper, an experimental investigation on the comparison between the Maximum Torque Per Ampere (MTPA) and the Field Orientation Control (FOC) algorithms for interior permanent magnet synchronous machines (IPMSMs) is described, analyzed and discussed. This investigation was carried out on a small-power IPMSM with low saliency ratio. More in detail, after a previous simulation study, the control techniques have been experimentally implemented and validated through means of a dSPACE® rapid prototyping system. The performances of the two algorithms have been evaluated and compared, obtaining interesting results.

010302 applied physicsRapid prototypingControl algorithmElectromagneticsPermanent magnet synchronous motorComputer scienceRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringlow saliency ratio motor02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesField oriented control algorithmmaximum torque per ampere control algorithmControl theoryMagnet0103 physical sciencesAutomotive Engineering0202 electrical engineering electronic engineering information engineeringTorqueInterior permanent magnet synchronous machineAmpereMaximum torque
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Enhanced loss model algorithm for interior permanent magnet synchronous machines

2017

This paper presents an experimental study on the impact of the parameter variations over the performances of a LMA (Loss Model Algorithm) designed for an IPMSM (Interior Permanent Magnet Synchronous Machine). In a previous work, the characterization was carried out by assessing, for several working conditions, the motor parameters that influence the motor efficiency. The proposed enhanced loss model algorithm is implemented in a rapid prototyping system and its performances, in term of efficiency, are compared with other control systems, obtaining promising results.

010302 applied physicsRapid prototypingInterior permanent magnet synchronous motorComputer science020208 electrical & electronic engineeringWork (physics)02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesDC motorTerm (time)Settore ING-IND/31 - Elettrotecnicaspeed control drive systemsMagnetControl system0103 physical sciences0202 electrical engineering electronic engineering information engineeringTorquepower loss minimizationSettore ING-INF/07 - Misure Elettriche E ElettronicheAlgorithmPermanent magnet synchronous machine2017 AEIT International Annual Conference
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Caries Development in Fluoridated and Non-Fluoridated Deciduous and Permanent Enamel in Situ Examined by Microradiography and Confocal Laser Scanning…

1998

The aim of the study was to compare initial caries development in fluoridated and non-fluoridated deciduous and permanent enamel in situ. Enamel slabs were mounted in removable appliances and worn for 4 wks. Significantly larger lesions developed in deciduous than in permanent enamel when no topical fluorides were used. Fluoride mouthrinsing partly prevented lesion development in deciduous and completely in permanent enamel. Initial enamel caries not detected by microradiography can be visualized by CLSM (confocal laser scanning microscopy).

0301 basic medicineIn situMaterials scienceMouthwashesDentistryDental CariesTopical fluorideFluorides03 medical and health scienceschemistry.chemical_compound0302 clinical medicinestomatognathic systemConfocal laser scanning microscopyHumansEnamel cariesTooth DeciduousDental EnamelMicroscopy ConfocalEnamel paintbusiness.industryInitial caries030206 dentistryGeneral MedicineMicroradiographyDentition Permanentstomatognathic diseases030104 developmental biologyDeciduouschemistryvisual_artDisease Progressionvisual_art.visual_art_mediumbusinessFluorideAdvances in Dental Research
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Iron-loaded transferrin (Tf) is detrimental whereas iron-free Tf confers protection against brain ischemia by modifying blood Tf saturation and subse…

2018

Despite transferrin being the main circulating carrier of iron in body fluids, and iron overload conditions being known to worsen stroke outcome through reactive oxygen species (ROS)-induced damage, the contribution of blood transferrin saturation (TSAT) to stroke brain damage is unknown. The objective of this study was to obtain evidence on whether TSAT determines the impact of experimental ischemic stroke on brain damage and whether iron-free transferrin (apotransferrin, ATf)-induced reduction of TSAT is neuroprotective. We found that experimental ischemic stroke promoted an early extravasation of circulating iron-loaded transferrin (holotransferrin, HTf) to the ischemic brain parenchyma.…

0301 basic medicineU-PAGE urea-polyacrylamide gel electrophoresisMaleClinical BiochemistryExperimental strokeBiochemistryBrain IschemiaBrain ischemia0302 clinical medicineADC apparent diffusion coefficientApotransferrinDWI diffusion-weighted imagingTANDEM-1 Thrombolysis and Deferoxamine in Middle Cerebral Artery Occlusion clinical trialrHTf rat HTfrATf rat ATflcsh:QH301-705.5chemistry.chemical_classificationNeuronslcsh:R5-920ChemistryTransferrinExtravasationNS21 a medium supplement to grow neuronspDAPK-1 phosphorylated anti-death-associated protein kinase 1NeuroprotectionStrokeWB Western blotFemalemedicine.symptomlcsh:Medicine (General)Research PaperhHTf human HTfPC12 cell line derived from a pheochromocytoma of the rat adrenal medullamedicine.medical_specialtyIron OverloadBBB blood-brain barrierNMDAR N-methyl-D-aspartate receptorDCF dihydrofluoresceinIronWGA wheat germ agglutininHTf holotransferrinTransferrin receptorBrain damageTfR transferrin receptorDeferoxamineNeuroprotectionPI propidium iodide03 medical and health sciencesBrain damageCM conditioned mediumROS reactive oxygen speciesInternal medicine4-HNE 4-hydroxynonenalTf transferrinReceptors TransferrinmedicineFeRhoNoxTM-1 probe to detect Fe2+AnimalsHumansATf apotransferrinCM-H2DCFDA 5-chloromethyl-27-dichlorodihydrofluorescein diacetateMCAO middle cerebral artery occlusionDMT-1 divalent metal transporterB-27 a medium supplement to grow neuronsReactive oxygen speciesNMDA N-methyl-D-aspartateTSAT blood transferrin saturationTransferrin saturationBlood transferrin saturation (TSAT)Organic ChemistryNIR near infraredReactive oxygen species (ROS)medicine.diseasepMCAO permanent middle cerebral artery occlusionRatsPWI perfusion-weighted imaging030104 developmental biologyEndocrinologylcsh:Biology (General)TransferrinDAPK-1 anti-death-associated protein kinaseOGD oxygen/glucose deprivationTTC 235-triphenyl-tetrazolium chlorideLipid PeroxidationMCA middle cerebral arteryApoproteinsReactive Oxygen SpeciesMRI magnetic resonance imagingtMCAO transient middle cerebral artery occlusion030217 neurology & neurosurgeryhATf human ATf
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Longevity and risk factors of post restorations after up to 15 years: A practice-based study.

2020

Abstract Introduction The aims of this multicenter, practice-based cohort study were to evaluate the success and survival of endodontically treated teeth with post restorations (ETT+Ps) and to analyze factors associated with the longevity of ETT+Ps. Methods Eight general dental practitioners each placed up to 27 ETT+Ps without any restriction to post materials or dimensions. Only incisors, canines, and premolars were included. At the last follow-up visit, ETT+Ps were considered as successful if the post and the initially placed definitive restoration were sufficient, whereas ETT+Ps were considered as survived if the post was still in function. Multilevel Cox proportional hazards models were…

0301 basic medicinemedicine.medical_specialtyMultivariate analysisDentistsDentistryComposite ResinsCohort Studies03 medical and health sciencesProfessional Role0302 clinical medicineRisk FactorsmedicineHumansDental Restoration FailureDental Restoration Permanent610 Medicine & healthGeneral DentistryRetrospective StudiesTooth NonvitalCrownsbusiness.industryProportional hazards modelRetrospective cohort study030206 dentistryEndodonticsConfidence interval030104 developmental biologyPrivate practiceGeneral practicebusinessPost and Core TechniqueCohort study
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A Tool to Assess Architectural Education from the Sustainable Development Perspective and the Students' Viewpoint

2021

[EN] Architectural education plays a fundamental role in achieving sustainable development by training future professionals who can contribute to sustainability through their practice. Nevertheless, to ensure the introduction of sustainable development in the education of future architects, it is fundamental to understand what is being done and what could be improved. Despite this, a big gap has been detected in the assessment of architectural education in Spain and worldwide. Thus, a close-ended questionnaire for students has been designed based on the outcomes from a literature review, exploratory interviews with specialists, and the qualitative analysis of two schools of architecture. Ad…

10.- Reducir las desigualdades entre países y dentro de ellosmedia_common.quotation_subjectGeography Planning and Development09.- Desarrollar infraestructuras resilientes promover la industrialización inclusiva y sostenible y fomentar la innovaciónTJ807-830Management Monitoring Policy and LawTD194-195Education for sustainable development15.- Proteger restaurar y promover la utilización sostenible de los ecosistemas terrestres gestionar de manera sostenible los bosques combatir la desertificación y detener y revertir la degradación de la tierra y frenar la pérdida de diversidad biológicaRenewable energy sources14.- Conservar y utilizar de forma sostenible los océanos mares y recursos marinos para lograr el desarrollo sosteniblePerceptionComputingMilieux_COMPUTERSANDEDUCATIONPROYECTOS ARQUITECTONICOS03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades13.- Tomar medidas urgentes para combatir el cambio climático y sus efectosGE1-350SociologyArchitectureArchitectural educationURBANISTICA Y ORDENACION DEL TERRITORIOmedia_commonArquitecturaSustainable developmentEnvironmental effects of industries and plantsRenewable Energy Sustainability and the Environment06.- Garantizar la disponibilidad y la gestión sostenible del agua y el saneamiento para todos17.- Fortalecer los medios de ejecución y reavivar la alianza mundial para el desarrollo sostenible11.- Conseguir que las ciudades y los asentamientos humanos sean inclusivos seguros resilientes y sosteniblesPerspective (graphical)Education for sustainable developmentTest (assessment)02.- Poner fin al hambre conseguir la seguridad alimentaria y una mejor nutrición y promover la agricultura sostenibleEnvironmental sciences08.- Fomentar el crecimiento económico sostenido inclusivo y sostenible el empleo pleno y productivo y el trabajo decente para todos12.- Garantizar las pautas de consumo y de producción sosteniblesIntroducing ESD in higher education curricula16.- Promover sociedades pacíficas e inclusivas para el desarrollo sostenible facilitar acceso a la justicia para todos y crear instituciones eficaces responsables e inclusivas a todos los niveles07.- Asegurar el acceso a energías asequibles fiables sostenibles y modernas para todosSustainabilityInstruments for assessing ESD in higher education01.- Erradicar la pobreza en todas sus formas en todo el mundoSustainabilityEngineering ethicsProfessional association04.- Garantizar una educación de calidad inclusiva y equitativa y promover las oportunidades de aprendizaje permanente para todos05.- Alcanzar la igualdad entre los géneros y empoderar a todas las mujeres y niñas
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La Muestra Continua de Vidas Laborales (MCVL) como fuente generadora de datos para el estudio del sistema de pensiones

2015

Esta tesis tiene como elemento fundamental de análisis la denominada Muestra Continua de Vidas Laborales (MCVL), como fuente generadora de datos para el estudio del sistema de público de pensiones de España. La MCVL es un conjunto de microdatos individuales anonimizados extraídos de los registros de la Seguridad Social de España. La MCVL se obtiene a partir de un Muestreo Aleatorio Simple (MAS) sobre la población de referencia (conjunto de personas relacionadas durante todo el año con la Seguridad Social, bien como afiliadas o bien como perceptoras de prestaciones, pero con ciertos matices en dicha relación). Los objetivos principales de esta tesis son: - Contribuir a aumentar el conocimien…

:CIENCIAS ECONÓMICAS::Economía sectorial::Finanzas y seguros [UNESCO]UNESCO::MATEMÁTICAS::Investigación operativa::Programación no lineal:MATEMÁTICAS::Probabilidad ::Matemáticas actuariales [UNESCO]Rentas vitaliciasSistema público de pensionesUNESCO::CIENCIAS ECONÓMICAS::Economía sectorial::Finanzas y segurosTest chi-cuadrado:MATEMÁTICAS::Estadística ::Teoría y técnicas de muestreo [UNESCO]Incapacidad permanenteMutuas de Accidentes de TrabajoViudedadCapitalización:MATEMÁTICAS::Investigación operativa::Programación no lineal [UNESCO]Muestreo Aleatorio EstratificadoUNESCO::MATEMÁTICAS::Probabilidad ::Matemáticas actuarialesUNESCO::MATEMÁTICAS::Estadística ::Teoría y técnicas de muestreoInforme Estadístico anual INSSp-valorTamaño del efectoMuestra Continua de Vidas LaboralesSelección de submuestras
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El consentimiento en el proceso penal : ¿un oxímoron?

2021

We are involved in a moment of deep changes in Criminal Procedure due, among other reasons, to the permanent expansion of Criminal Law. Legislative modifications have taken place one another over the world and they have led to a functional reformulation of the role played by the protagonists of Criminal Procedure. These changes have not finished yet and the future is still to come, but new elements are already emerging: the consent of the actors of the process and of the victims and the reinforcement of the principle of opportunity are undoubtedly some of them. Probation, diversion, compliance, criminal mediation are institutions that stand on the principle of consent for procedural purpose…

:CIENCIAS JURÍDICAS [UNESCO]principle of oppotunity 208 235among other reasonscriminal mediation are institutions that stand on the principle of consent for procedural purposes and show this new scenario that is emerging. Speaking about consent in criminal proceedings seems to be no longer an oxymoron Consentimientoto the permanent expansion of Criminal Law. Legislative modifications have taken place one another over the world and they have led to a functional reformulation of the role played by the protagonists of Criminal Procedure. These changes have not finished yet and the future is still to comecompliance2070-8157 22082 Revista Boliviana de Derecho 565487 2021 31 7730057 El consentimiento en el proceso penal ¿un oxímoron? Barona VilarConsentbut new elements are already emerging: the consent of the actors of the process and of the victims and the reinforcement of the principle of opportunity are undoubtedly some of them. ProbationUNESCO::CIENCIAS JURÍDICASdiversionprincipio de oportunidadSilvia We are involved in a moment of deep changes in Criminal Procedure duethe consent of the actors of the process and of the victims and the reinforcement of the principle of opportunity are undoubtedly some of them. Probation [but new elements are already emerging]
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Follow‐up of patients subjected to direct and indirect pulp capping of young permanent teeth. A retrospective study

2021

Abstract Objective A retrospective study of the success rate of direct pulp capping (DPC) and indirect pulp capping (IPC) was carried out in children between 6–14 years‐old, considering separately primary caries or caries affecting teeth with molar incisor hypomineralization (MIH). Material and methods Data were collected in a dental public health service. Following the inclusion criteria, 232 treatments were analyzed. Success was defined by the presence of a functional tooth without clinical signs or symptoms of pulpal or periapical disease. The success rate was correlated to patient gender, the affected tooth and the indication of therapy using the chi‐squared and Fisher exact test. The s…

AdolescentDentistryDental Pulp Cappingsymbols.namesakeIndirect Pulp Cappingstomatognathic systemyoung permanent teethHumansMedicineChildGeneral DentistryFisher's exact testRetrospective StudiesPermanent teethbusiness.industrySilicatesOxidesRetrospective cohort studyRK1-715Original ArticlesCalcium CompoundsPrimary cariesMolar Incisor HypomineralizationUnited StatesPulp cappingindirect pulp cappingstomatognathic diseasesTreatment OutcomeDentistrydirect pulp cappingsymbolsOriginal ArticleVital pulp therapybusinessPulp Capping and Pulpectomy AgentsDental public healthFollow-Up StudiesClinical and Experimental Dental Research
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