Search results for "age distribution"

showing 5 items of 215 documents

Does the evidence matter in medicine? The retinoblastoma paradigm.

2007

Retinoblastoma (Rb) is the most common intraocular malignant tumour in childhood, with an incidence of 1 in 15,000 live births. Complete information on this rare tumour can be easily accessed through the internet, although many aspect concerning the aetiology and pathogenesis of the disease, are still controversial. The "two hit" theory, formulated in 1971 to explain the variegated clinical expression of the disease, is based on the idea that single gene mutation may determine the development of cancer. However, this view does not take into account the most recent evidences showing the role of aneuploidy and chromosome instability in cancer. Also, a number of other genes and epigenetic mech…

microsatelliteCancer Researchtwo hit theoryAneuploidyDiseaseBiologymedicine.disease_causeBioinformaticsEpigenesis GeneticAge DistributionChromosome instabilityChromosomal InstabilitymedicineHumansGenetic Predisposition to DiseaseGeneticsEvidence-Based MedicineRetinoblastomaInfant NewbornRetinoblastomaCancerInfantmedicine.diseaseAneuploidyinstabilitySettore BIO/18 - GeneticaOncologyHereditary RetinoblastomaMutationEtiologyMicrosatellite Instabilitychromosome instabilityCarcinogenesisInternational journal of cancer
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Häufigkeit, Altersabhängigkeit und Geschlechtsverteilung des Fersensporns

1995

In 1027 lateral radiograms of the ankle in a Caucasian population, 161 plantar and/or dorsal calcaneal spurs (15.7%) were diagnosed. Plantar spurs were more common than dorsal spurs (11.2 and 9.3% respectively). Prevalence of both spurs increases considerably with the rising age. Dorsal spurs appear slightly earlier than plantar spurs. The spur frequencies are similar in left and right feet. The plantar spurs were significantly (p < 0.0001) more common in women than in men in general, while dorsal spurs were more frequent in men than in women up to the age of 70. The previously reported higher frequencies of plantar and dorsal calcaneal spurs in women than in men are probably a result of a …

musculoskeletal diseasesDorsumendocrine systembusiness.industryIncidence (epidemiology)AnatomyEuropean populationhumanitiesmedicine.anatomical_structurehemic and lymphatic diseasesparasitic diseasesSpurmedicineRadiology Nuclear Medicine and imagingAge distributionmedicine.symptomAnklebusinessCaucasian populationCalcaneal spurRöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren
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Associations of near work time, watching TV, outdoors time, and parents' myopia with myopia among school children based on 38-year-old historical dat…

2021

Purpose To study the prevalence and risk factors of myopia with data from a questionnaire study conducted in 1983 among Finnish school children. Methods School children (n = 4 961) from the 1st, 5th and 8th grades of school (7-, 11- and 15-year-olds) in Central Finland were screened for vision followed by a questionnaire, which was returned by 4 352 (87.7%) participants. Myopia was categorized based on the questionnaire. Items concerned daily time spent on near work and outdoor activities, excluding time spent at school, watching TV and parental myopia and the associations of myopia with these factors were studied. Results The prevalence of myopia was 3%, 15% and 27% among the 7-, 11- and 1…

ulkoiluMaleParentsesiintyvyysgenetic structuresAdolescentmedia_common.quotation_subjectlikinäköisyysAge DistributionLeisure ActivitiesVision ScreeningnuoretRisk FactorsSurveys and QuestionnairesMyopiaPrevalenceMedicineNear workHumansGirlSex DistributionChildStudentsFinlandmedia_commonQuestionnaire studybusiness.industryGeneral MedicineriskitekijätConfidence intervaleye diseasesOphthalmologyFemalebusinessDemographyActa ophthalmologicaReferences
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The ALICE experiment at the CERN LHC

2008

Journal of Instrumentation 3(08), S08002 (2008). doi:10.1088/1748-0221/3/08/S08002

visible and IR photonsLiquid detectorshigh energyPhotonPhysics::Instrumentation and DetectorsTransition radiation detectorsTiming detectors01 natural sciencesOverall mechanics designParticle identificationSoftware architecturesParticle identification methodsGaseous detectorscluster findingDetector cooling and thermo-stabilizationDetector groundingParticle tracking detectors[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Special cablesDetector alignment and calibration methodsDetectors and Experimental TechniquesNuclear ExperimentVoltage distributions.Photon detectors for UVInstrumentationMathematical PhysicsQuantum chromodynamicsPhysicsLarge Hadron ColliderSpectrometersPhysicsDetectorcalibration and fitting methodsTransition radiation detectorScintillatorsData processing methodsAnalysis and statistical methodsData reduction methodsParticle physicsCherenkov and transition radiationTime projection chambers610dE/dx detectorsNuclear physicsCalorimetersPattern recognitionGamma detectors0103 physical sciencesddc:610Solid state detectors010306 general physicsMuonInstrumentation for heavy-ion acceleratorsSpectrometerLarge detector systems for particle and astroparticle physics010308 nuclear & particles physicsCERN; LHC; ALICE; heavy ion; QGPCherenkov detectorsComputingVoltage distributionsManufacturingscintillation and light emission processesanalysis and statistical methods; calorimeters; cherenkov and transition radiation; cherenkov detectors; computing; data processing methods; data reduction methods; de/dx detectors; detector alignment and calibration methods; detector cooling and thermo-stabilization; detector design and construction technologies and materials; detector grounding; gamma detectors; gaseous detectors; instrumentation for heavy-ion accelerators; instrumentation for particle accelerators and storage rings - high energy; large detector systems for particle and astroparticle physics; liquid detectors; manufacturing; overall mechanics design; particle identification methods; particle tracking detectors; pattern recognition; cluster finding; calibration and fitting methods; photon detectors for uv; visible and ir photons; scintillators; scintillation and light emission processes; simulation methods and programs; software architectures; solid state detectors; special cables; spectrometers; time projection chambers; timing detectors; transition radiation detectors; voltage distributionsInstrumentation for particle accelerators and storage ringsInstrumentation; Mathematical PhysicsHigh Energy Physics::ExperimentSimulation methods and programsDetector design and construction technologies and materials
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Electrical conductivity of glass fiber-reinforced plastic with nanomodified matrix for damage diagnostic

2021

The electrical conductivity of glass fiber-reinforced plastic (GFRP) with epoxy matrix modified by multiwall carbon nanotubes (MWCNT) was studied. The electrical conductivity of nanomodified lamina and multi-layered GFRP was investigated on several levels using a structural approach. Components of the electrical conductivity tensor for unidirectional-reinforced monolayer were calculated similarly as in micromechanics using the conductivity of the nanomodified matrix. The electrical conductivity of multilayer composite was calculated using laminate theory and compared with values measured experimentally for various fiber orientation angles. Calculated and experimental data were in good agree…

voltage distributionTechnologyMaterials scienceGlass fiberCarbon nanotubeConductivityArticlelaw.inventionFracture toughnessmicromechanicsElectrical resistance and conductancelawGeneral Materials ScienceComposite materialinterlaminar fractureMicroscopyQC120-168.85carbon nanotubeselectrical conductivityTQH201-278.5glass fiber reinforced plasticMicromechanicsFracture mechanicsdamage diagnosticFibre-reinforced plasticEngineering (General). Civil engineering (General)TK1-9971Descriptive and experimental mechanicsElectrical engineering. Electronics. Nuclear engineeringTA1-2040
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