Search results for "cements"

showing 10 items of 136 documents

Cartographie et analyse visuelle des émotions associées à des déplacements quotidiens

2013

http://www.lecfc.fr/new/articles/217-article-4.pdf; National audience; Les méthodes d'analyse visuelle constituent un ensemble d'outils qui permettent de traiter les données de plus en plus nombreuses notamment celles concernant les déplacements de la population. Nous en faisons usage ici afin d'analyser les déplacements quotidiens intra-urbains caractérisés par des émotions qui leur sont associées. Cette étude s'insère dans le cadre du projet FEDER ODIT (Observatoire des dynamiques industrielles et territoriales) qui fait suite à l'ANR ECDESUP (l'évaluation, le choix et la décision dans l'usage des espaces urbains et péri-urbains, www.ecdesup.org/. Ce projet interdisciplinaire nous a permi…

déplacements quotidiens[SHS.GEO] Humanities and Social Sciences/Geographyémotionscartographie[SHS.GEO]Humanities and Social Sciences/Geography[ SHS.GEO ] Humanities and Social Sciences/Geography
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Memory-saving optimization algorithms for systems with limited hardware

2011

evolutionary algorithmmemetic algorithmdifferentiaalievoluutiodifferential evolutiontietämystekniikkamemeettiset algoritmitgeneettiset algoritmitglobal optimizationevoluutioalgoritmitcomputational ingelligencelaskennallinen älykkyysevoluutiolaskentacompact optimizationtekoälymatemaattinen optimointialgorithmic enhancementskoneoppiminenoptimointioptimointimenetelmätmemetic computingalgoritmitevolutionary computingpopulation-less optimizationsingle-solution optimization
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Biological Effects of New Hydraulic Materials on Human Periodontal Ligament Stem Cells.

2019

Background: The aim of this study was: to evaluate the biological properties of new hydraulic materials: Bio-C Repair and Bio-C Sealer. Methods: Periodontal ligament stem cells were exposed to several dilutions of Bio-C Repair and Bio-C Sealer. The ion release profile and pH were determined. Metabolic activity, cell migration and cell survival were assessed using the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT), wound-healing assays and Annexin assays, respectively. Cells were cultured in direct contact with the surface of each material. These were then analyzed via scanning electron microscopy (SEM) and energy dispersive X-ray (EDX). Statistical differences were ass…

hydraulic cementsSerial dilutionPeriodontal ligament stem cellsScanning electron microscopelcsh:Medicine02 engineering and technologyOdontologiaArticle03 medical and health sciences0302 clinical medicineAnnexinMedicineViability assayCell adhesionCytotoxicityendodontic cementsbusiness.industrylcsh:Rhuman periodontal ligament stem cellsCell migration030206 dentistryGeneral Medicine021001 nanoscience & nanotechnologyMolecular biologybioceramicscytotoxicity0210 nano-technologybusinessJournal of clinical medicine
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ESTUDIO DEL EFECTO INFORMATIVO DEL ANUNCIO DE BENEFICIOS TRIMESTRALES

2005

In this research we investigate whether quarterly earnings announcements are informative using awide sample of firms listed in the Spanish Stock Market (SIBE). We study the period comprised between thethird quarterly of 2002 and the fourth quarterly of 2003. We analyse whether abnormal returns are related tothe quarter in which the announcement is released, whether the announcement implies good or bad news forthe firm, the source of the information, the size of the firm and whether the firm is followed by analysts.Results show that quarterly earnings announcements are informative. We also obtain evidence of a possibleuse of insider information in the case of the announcements disclosed in t…

jel:G14jel:G19Anuncio de beneficios trimestrales rendimiento anormal información privilegiada Quarterly earnings announcements abnormal returns insider information.jel:G12
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Cytocompatibility and Bioactive Properties of Hydraulic Calcium Silicate-Based Cements (HCSCs) on Stem Cells from Human Exfoliated Deciduous Teeth (S…

2020

The implementation of hydraulic calcium silicate-based endodontic cements (HCSCs) in biologically based endodontic procedures for the primary dentition has been recently investigated, focusing on the biological response of stem cells from human exfoliated deciduous teeth (SHEDs) towards them. The present systematic review aimed to present a qualitative synthesis of the available literature consisting of in vitro assays, which assessed the cytocompatibility and bioactive properties of HCSCs in direct contact with SHEDs. Following the PRISMA statement, an electronic database search was carried out in Medline, Scopus, Embase, Web of Science, and SciELO on March 31st and updated on November 16t…

lcsh:MedicineReview03 medical and health scienceschemistry.chemical_compound0302 clinical medicinecalcium silicate cementsDeciduous teethMedicinedental stem cellsViability assayProroot mtacell viability030304 developmental biology0303 health sciencesbusiness.industrylcsh:RIn vitro toxicology030206 dentistryGeneral MedicineIn vitromedicine.anatomical_structurechemistrybioceramicbioactivityCalcium silicateCancer researchStem cellNodule formationbusinessJournal of Clinical Medicine
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Infiltrazione marginale di tre sistemi di cementazione per inlay in composito: comparazione in vitro

2007

Lo scopo del presente studio è quello di valutare in vitro l'infiltrazione marginale di inlays in composito cementati con tre differenti materiali. Su 36 molari e premolari estratti per motivi ortodontici o parodontali, sono state eseguite preparazioni MOD con margine cervicale sullo smalto. Dopo aver rilevato le impronta in polietere, sono stati realizzati gli inlays in resina composita. I campioni sono stati divisi casualmente in 3 gruppi: Gruppo1 cemento composito microibrido duale (Calibra, Dentsply, York, USA); Gruppo2 composito Flow (Charisma® flow, Heraeus Kulzer, Hanau, Germany); Gruppo3 cemento composito autoadesivo universale ( Relyx Unicum, 3M Espe). I campioni di ogni gruppo son…

luting cementsinlay
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On the physical origin of the protein dynamical transition

2012

mean square displacementsProtein dynamicNeutron scatteringSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)
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Methotrexate-Loaded Polymethylmethacrylate Bone Cement for Local Bone Metastasis Therapy: Pilot Animal Study in the Rabbit Patellar Groove

2008

Local chemotherapy is an option in bone metastasis treatment. On the other hand, evaluation of side effects on bone is a difficult issue in drug development and biomaterials research. Most animal models to date are inappropriate or not feasible. Rabbits are an alternative to other bigger mammals and have an appropriate bone structure compared to rats and mice. The patellar groove model of the rabbit offers a standardized and sensitive model to evaluate bone-compromising drug effects. We tested the system with a reproducible polymethacrylate implant as carrier and loaded this system with methotrexate. Three methotrexate concentrations were used in the test samples (250 mg, 1 g and 4 g per 40…

medicine.medical_specialtymedicine.medical_treatmentBone NeoplasmsPilot ProjectsMetastasisDrug DiscoverymedicineAnimalsPolymethyl MethacrylatePharmacology (medical)PharmacologyChemotherapybusiness.industryBone CementsBone metastasisPatellaProstheses and ImplantsGeneral Medicinemedicine.diseaseBone cementSurgeryPre-clinical developmentDisease Models AnimalMethotrexateInfectious DiseasesOncologyPatellaMethotrexateRabbitsImplantbusinessmedicine.drugChemotherapy
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Déplacements urbains: sortir de l'orthodoxie

2015

Depuis une trentaine d’années, les politiques de déplacements urbains visent à une réduction de l’usage de l’automobile. Toutefois, aucune de ces stratégies n’a jusqu’à présent rencontré le succès escompté. La théorie socio-économique des transports repose sur une supposée rationalité de l’individu, lequel serait tantôt optimisateur, tantôt fidèle à ses convictions, à ce qui lui paraît «juste» ou «bon». Cette hypothèse est fortement remise en cause dans cet ouvrage. L’auteur montre que cette vision réductrice mène non seulement à l’échec des politiques de déplacements, mais également à l’incompréhension de ses raisons fondamentales. En s’appuyant sur le concept d’habitude, il propose de ren…

mobilité quotidienne[SHS.GEO] Humanities and Social Sciences/Geographydéplacements urbains
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L'immobilité est-elle un marqueur de la variabilité quotidienne des déplacements ? : Analyse à partir d'un modèle d'équations structurelles sur des d…

2017

National audience; La mobilité automobile et les déplacements de longue portée ont un coût plus élevé qui génère de fortes disparités entre les individus, notamment en fonction du revenu. Ces disparités constituent de véritables inégalités dans la mesure où elles génèrent des différences d’accès à des ressources décisivespour les individus comme l’approvisionnement alimentaire ou l’emploi. Au cours de ces dernières décennies, ces inégalités ont fait l’objet de nombreux travaux de recherche qui ont montré l’accroissement de ces inégalités à de nombreux égards. Toutefois, les travaux empiriques français menées à partir d’analyses quantitatives peinent à se renouveler et aller au-delà des prem…

mobilité quotidiennevariabilité[SHS.GEO] Humanities and Social Sciences/Geographymodèle d’équations structurelles[SHS.GEO]Humanities and Social Sciences/GeographyGrande-Bretagneenquête déplacementsimmobilité[ SHS.GEO ] Humanities and Social Sciences/Geography
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