Search results for "occurrence"

showing 10 items of 92 documents

Multi-occurrence of twenty mycotoxinsin pasta and a risk assessment in the moroccan population

2018

In the present study, the multi-occurrence of twenty (20) mycotoxins in pasta samples consumed in Morocco was assessed. For this, a modified Quick, Easy, Cheap Effective, Rugged, and Safe method was validated. The mycotoxins studied were identified and quantified by liquid chromatography&ndash

AdultAflatoxinQuEChERSHealth Toxicology and MutagenesisPopulationlcsh:MedicineFood ContaminationBiologyToxicologyQuechersoccurrence01 natural sciencesCromatografia de líquidsArticleGas Chromatography-Mass SpectrometryDietary Exposurechemistry.chemical_compound0404 agricultural biotechnologyTandem Mass SpectrometryRisk exposureHumansFood scienceCitiesMycotoxineducationZearalenonepastaCromatografia de gasoseducation.field_of_studylcsh:R010401 analytical chemistryrisk assessment04 agricultural and veterinary sciencesMycotoxins040401 food science0104 chemical sciencesMoroccochemistryRisk assessmentEnniatinChromatography LiquidEnvironmental Monitoring
researchProduct

Prevalence and Co-Occurrence of Different Types of Body Dysmorphic Disorder Among Men Having Sex with Men

2020

Body dysmorphic disorder (BDD) is a relatively common psychiatric condition of which the prevalence has not been fully investigated in the non-clinical population, and in particular among men having sex with men (MSM). MSM have proven to be more inclined to develop body dissatisfaction and body image disorders compared to non-MSM. Our study investigates the prevalence of BDD and the prevalence and co-occurrence of muscle dysmorphia (MD) and penile dysmorphic disorder (PDD) in a sample of 261 Italian MSM recruited online. From our data, gathered through self-report measures, the prevalence of BDD, MD, and PDD in our populations was 5.4%, 8.8%, and 4.2%, respectively. Compared to their elders…

AdultMaleAdolescentSocial PsychologyPopulationmen having sex with men050109 social psychologyEducationGender StudiesSexual and Gender MinoritiesYoung Adult03 medical and health sciencesmental disordersPrevalencemale body imageHumansMedicine0501 psychology and cognitive sciencesbody dysmorphic disorder; male body image; men having sex with men; Muscle dysmorphia; penile dysmorphic disorder; prevalenceMen having sex with menHomosexuality MaleYoung adulteducationGeneral PsychologyAgedbody dysmorphic disordereducation.field_of_study030505 public healthpenile dysmorphic disorderbusiness.industry05 social sciencesCo-occurrenceGeneral MedicineBody Dysmorphic Disordersmedicine.diseaseMuscle dysmorphiaYounger adultsBody dysmorphic disorderSelf Report0305 other medical sciencebusinessMuscle dysmorphiaDemographyBody dissatisfactionJournal of Homosexuality
researchProduct

Occurrence and clinical characteristics of Compulsive Sexual Behavior Disorder (CSBD): A cluster analysis in two independent community samples.

2020

AbstractBackground and aimsCompulsive Sexual Behavior Disorder (CSBD) is characterized by a persistent failure to control intense and recurrent sexual impulses, urges, and/or thoughts, resulting in repetitive sexual behavior that causes a marked impairment in important areas of functioning. Despite its recent inclusion in the forthcoming ICD-11, concerns regarding its assessment, diagnosis, prevalence or clinical characteristics remain. The purpose of this study was to identify participants displaying CSBD through a novel data-driven approach in two independent samples and outline their sociodemographic, sexual, and clinical profile.MethodsSample 1 included 1,581 university students (female…

AdultMaleAdolescentUniversitiesSexual Behavior030508 substance abuseMedicine (miscellaneous)occurrenceDisease clusterSeverity of Illness Index03 medical and health sciencesYoung Adult0302 clinical medicineIndependent samplesSensation seekingCluster AnalysisHumansStudentsPsychiatric Status Rating ScalesParaphilic DisordersGeneral Medicineclinical profile030227 psychiatryDisruptive Impulse Control and Conduct DisordersPsychiatry and Mental healthClinical PsychologySexual behaviorErotophiliaCompulsive BehaviorFemaleCompulsive Sexual Behavior Disorder (CSBD)0305 other medical sciencePsychologycluster analysisClinical psychologyJournal of behavioral addictions
researchProduct

Analysis of thiamine transporter genes in sporadic beriberi

2014

Abstract Objective Thiamine or vitamin B 1 deficiency diminishes thiamine-dependent enzymatic activity, alters mitochondrial function, impairs oxidative metabolism, and causes selective neuronal death. We analyzed for the first time, the role of all known mutations within three specific thiamine carrier genes, SLC19 A2, SLC19 A3 , and SLC25 A19 , in a patient with atrophic beriberi, a multiorgan nutritional disease caused by thiamine deficiency. Methods A 44-year-old male alcoholic patient from Morocco developed massive bilateral leg edema, a subacute sensorimotor neuropathy, and incontinence. Despite normal vitamin B 1 serum levels, his clinical picture was rapidly reverted by high-dose in…

AdultMalemedicine.medical_specialtySLC19 A- SLC25 A19SLC19 AEndocrinology Diabetes and MetabolismGene mutationBeriberimedicine.disease_causeMitochondrial Membrane Transport Proteinslaw.inventionBeriberilawInternal medicineGenotypemedicineThiamine transporterObjective: Thiamine or vitamin B1 deficiency diminishes thiamine-dependent enzymatic activity alters mitochondrial function impairs oxidative metabolism and causes selective neuronal death. We analyzed for the first time the role of all known mutations within three specific thiamine carrier genes SLC19 A2 SLC19 A3 and SLC25 A19 in a patient with atrophic beriberi a multiorgan nutritional disease caused by thiamine deficiency. Methods: A 44-year-old male alcoholic patient from Morocco developed massive bilateral leg edema a subacute sensorimotor neuropathy and incontinence. Despite normal vitamin B1 serum levels his clinical picture was rapidly reverted by high-dose intramuscular thiamine treatment suggesting a possible genetic resistance. We used polymerase chain reaction followed by amplicon sequencing to study all the known thiamine-related gene mutations identified within the Human Gene Mutation Database. Results: Thirty-seven mutations were tested: 29 in SLC19 A2 6 in SLC19 A3 and 2 in SLC25 A19. Mutational analyses showed a wild-type genotype for all sequences investigated. Conclusion: This is the first genetic study in beriberi disease. We did not detect any known mutation in any of the three genes in a sporadic dry beriberi patient. We cannot exclude a role for other known or unknown mutations in the same genes or in other thiamine-associated genes in the occurrence of this nutritional neuropathy.HumansThiamineGenePolymerase chain reactionGeneticsMutationNutrition and DieteticsbiologyMembrane Transport ProteinsThiamine Deficiencymedicine.diseaseAlcoholismEndocrinologyMutationbiology.proteinThiamineMutations
researchProduct

Machine learning for rapid mapping of archaeological structures made of dry stones – Example of burial monuments from the Khirgisuur culture, Mongoli…

2020

11 pages; International audience; The present study proposes a workflow to extract from orthomosaics the enormous amount of dry stones used by past societies to construct funeral complexes in the Mongolian steppes. Several different machine learning algorithms for binary pixel classification (i.e. stone vs non-stone) were evaluated. Input features were extracted from high-resolution orthomosaics and digital elevation models (both derived from aerial imaging). Comparative analysis used two colour spaces (RGB and HSV), texture features (contrast, homogeneity and entropy raster maps), and the topographic position index, combined with nine supervised learning algorithms (nearest centroid, naive…

Archeology010504 meteorology & atmospheric sciences[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and PrehistoryComputer scienceMaterials Science (miscellaneous)Topographic position index[SDV]Life Sciences [q-bio]ConservationMachine learningcomputer.software_genre01 natural sciences[SHS]Humanities and Social SciencesNaive Bayes classifierVector graphicsPixel classification[SCCO]Cognitive sciencePixel classification Grey level co-occurrence matrix RGB colour space Texture Topographic position index Photogrammetry Burial complex planigraphy Mongolia Bronze age Iron age0601 history and archaeologyTextureSpectroscopyRGB colour space0105 earth and related environmental sciencesBronze age060102 archaeologyArtificial neural networkbusiness.industryIron ageCentroidGrey level co-occurrence matrix06 humanities and the artscomputer.file_formatMongoliaArchaeologyRandom forestSupport vector machinePhotogrammetryChemistry (miscellaneous)Photogrammetry[SDE]Environmental SciencesBurial complex planigraphyArtificial intelligenceRaster graphicsbusinessGeneral Economics Econometrics and Financecomputer
researchProduct

An original way to evaluate daily rainfall variability simulated by a regional climate model: the case of South African austral summer rainfall

2014

We discuss the value of a clustering approach as a tool for evaluating daily rainfall output from climate models. Ascendant hierarchical clustering is used to evaluate how well South African recurrent daily rainfall patterns are simulated during the austral summer (December to February 1970–1971 to 1998–1999). A set of 35-km regional climate simulations, run with the WRF model and driven by the ERA40 reanalysis, is chosen as a case study. Six recurrent patterns are identified and compared to the observed clusters obtained by applying the same methodology to 5352 daily rain gauge records. Two of the WRF clusters describe either a persistent and widespread dryness (65% of the days) or pattern…

Atmospheric Science010504 meteorology & atmospheric sciencesFrequency of occurrenceRain gauge0207 environmental engineering02 engineering and technologySpatial Projection01 natural sciencesHierarchical clustering13. Climate actionWeather Research and Forecasting ModelClimatologyWeak modelmedicineDrynessEnvironmental scienceClimate modelmedicine.symptom020701 environmental engineering0105 earth and related environmental sciencesInternational Journal of Climatology
researchProduct

Indoor air pesticide in dwellings of breastfeeding mothers of the Valencian Region (Spain): Levels, exposure and risk assessment

2021

This study assessed the inhalation risk associated with indoor pesticide concentrations in the dwellings of 41 lactating mothers living in the Valencian Region, Spain, who were participants in the BETTERMILK project. Twenty-eight substances were investigated, including pyrethroid (PYRs), organophosphate (OPPs), and organochlorine (OCPs) pesticides. Bifenthrin, cypermethrin, lambda-cyhalothrin, malathion, permethrin and pyrimethanil were detected with frequencies ranging from 2% (malathion) to 80% (cypermethrin), and with an arithmetic mean concentration ranging from 4.1 ng m(-3) (bifenthrin) to 12.1 ng m-(3) (cypermethrin). The indoor air analysis was combined with several surveys to assess…

Atmospheric ScienceIndoor ambient air010504 meteorology & atmospheric sciencesBifenthrinPopulation010501 environmental sciences01 natural sciencesCypermethrinToxicologychemistry.chemical_compoundOccurrencemedicinePesticideseducation0105 earth and related environmental sciencesGeneral Environmental ScienceRisk assessmentBreastfeeding motherseducation.field_of_studyPyrethroidbusiness.industryPesticideHazard quotientchemistryMalathionbusinessPermethrinmedicine.drug
researchProduct

From Topology to Quasi-Topology. The Complexity of the Notional Domain

2016

This article examines a fundamental metalinguistic construction of the theory of enunciative operations: the notional domain. In particular, we try to explain some elementary topological concepts on which this construction is based and we try to show the key role they play in the description of some basic linguistic operations.

AttractorTopological spacePredicative expressionNotional amountTopologyTopology (chemistry)Notional Domain Topological Space Occurrences Organizing Centre AttractorsDomain (software engineering)Mathematics
researchProduct

Experimental observations of upstream overdeepening

2005

The issue of morphodynamic influence in meandering streams is investigated through a series of laboratory experiments on curved and straight flumes. Both qualitative and quantitative observations confirm the suitability of the recent theoretical developments (Zolezzi & Seminara 2001) that indicate the occurrence of two distinct regimes of morphodynamic influence, depending on the value of the width ratio of the channel β. The threshold value βR separating the upstream from the downstream influence regimes coincides with the resonant value discovered by Blondeaux & Seminara (1985). Indeed it is observed that upstream influence may occur only in relatively wide channels, while narrower stream…

BedformMechanics of MaterialsMechanical EngineeringOverdeepeningThe issue of morphodynamic influence in meandering streams is investigated through a series of laboratory experiments on curved and straight flumes. Both qualitative and quantitative observations confirm the suitability of the recent theoretical developments (Zolezzi & Seminara 2001) that indicate the occurrence of two distinct regimes of morphodynamic influence depending on the value of the width ratio of the channel β. The threshold value βR separating the upstream from the downstream influence regimes coincides with the resonant value discovered by Blondeaux & Seminara (1985). Indeed it is observed that upstream influence may occur only in relatively wide channels while narrower streams are dominated by downstream influence. A series of experiments has been carried out in order to check the above theoretical predictions and show for the first time evidence of the occurrence of upstream overdeepening. Two different sets of experiments have been designed where a discontinuity in channel geometry was present such that the channel morphodynamics was influenced in the upstream direction under super-resonant conditions (β >βR) and in the downstream direction under sub-resonant conditions (β <βR). Experimental results give qualitative and quantitative support to the theoretical predictions and allow us to clarify the limits of the linear analysis.MechanicsLinear analysisCondensed Matter PhysicsWidth ratioGeology
researchProduct

Dissimilarity Application for Medical Imaging Classification

2005

In the traditional way of learning from examples of objects the classifiers are built in a feature space. However, alternative ways can be found by constructing decision rules on dissimilarity (distance) representations. In such a recognition process a new object is described by its distances to (a subset of) die training samples. The use of the dissimilarities is especially of interest when features are difficult to obtain or when they have a little discriminative power. Purpose of this work is the development of an automatic classification system which could be useful for radiologists in the investigation of breast cancer. The software has been designed in the framework of the MAGIC-5 col…

Breast cancerDissimilarityComputer assisted diagnosiComputer aided diagnosimammographyCo-occurrence matrixMedical image processingimage segmentationNeural network
researchProduct