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Advances of Optical Rotation Detection
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Advances of Optical Rotation Detection
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Advances of Optical Rotation Detection Advances of Optical Rotation Detection[詳細]
2024-09-11 18:03
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Surface-enhanced oxidation and detection Surface-enhanced oxidation and detection[詳細]
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Detection of paracetamol by capillary electrophoresi Detection of paracetamol by capillary electrophoresi[詳細]
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A facile and sensitive chemiluminescence detection o A facile and sensitive chemiluminescence detection o[詳細]
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Detection of adulteration in camellia seed oilses Anelectronicnosewasusedforthedetectionofmaizeoiladulterationincamelliaseedoilandsesameoil.Theresultsofmultivariateanalysisofvarianceshowedthatthesensorsignalsofdifferentkindsofoilaresignificantlydifferentfromeachother.Prin-cipalcomponentanalysisPCAcannotbeusedtodiscriminatetheadulterationofcamelliaseedoil,butcanbeusedinthediscriminationofadulterationinsesameoil.LineardiscriminantanalysisLDAismoreeffectivethanPCAandcanbeusedinadulterationdiscriminationforbothcamelliaseedoilandsesameoil.InordertocheckthediscriminativepowerofLDA,canonicaldiscriminantanalysiswasperformedaswell.Acceptableresultswerealsoobtained:Theaccuracyofpredictionwas83.6%forcamelliaseedoiland94.5%forsesameoil.TheartificialneuralnetworkANNmodelwasusedtodetectthepercentageofadulterationincamelliaseedoilandsesameoil.Theresultsshowedthat,basedonANNasitspatternrecognitiontechnique,theelec-tronicnosecannotpredictthepercentageofadulterationincamelliaseedoil,butcanbeusedinthequantitativedeterminationofadulterationinsesameoil.[詳細]
2018-08-16 10:00
產品樣冊
Electronic nosedata analysis for detection of mai an!°electronicnose!±hasbeenusedforthedetectionofadulterationsofsesameoil.thesystem,comprising10metaloxidesemiconductsensors,wasusedtogenerateapatternofthevolatilecompoundspresentinthesamples.priortodifferentsupervisedpatternrecognitiontreatments,featureextractiontechniqueswereemployedtochooseasetofoptimaldiscriminantvariables.principalcomponentanalysispca,fisherlineartransformationflt,stepwiselineardiscriminantanalysisstep-lda,se-lectionbyfisherweightssfwwereused,respectively.andthen,lineardiscriminantanalysislda,probabilisticneuralnetworkspnn,backpropagationneuralnetworksbpnnandgeneralregressionneuralnetworkgrnnwereappliedaspatternrecognitiontechniquesfortheelectronicnose.asforldaandpnn,fltwasthemosteffectivefeatureextractionmethod,whilestep-ldawasthemosteffectivewayforbpnnandfltwasmoresuitableforgrnn.withonlyonesamplemisclassi?edinourexperiment,ldaismorepowerfulthanpnn.excellentresultswereobtainedinthepredictionofpercentageofadulterationinsesameoilbybpnnandgrnn.aftertrainingforsometime,bpnncouldpredicttheadulterationquantitativelymorepreciselythangrnn,whereaswithfltasitsfeatureextractionmethodandwithoutiterativetraining,grnncouldalsoyieldratheracceptableresults.?2006elsevierb.v.allrightsreserved.[詳細]
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Surface-enhanced oxidation and detection of Sunset Y Surface-enhanced oxidation and detection of Sunset Y[詳細]
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Detection of adulteration in camellia seed oil and s Detection of adulteration in camellia seed oil and s[詳細]
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課件
Electronic nose and data analysis for detection of m Electronic nose and data analysis for detection of m[詳細]
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Determination of pesticides in foods using phosphorus and sulfur detection by GC-ICP-QQQ Determination of pesticides in foods using phosphorus and sulfur detection by GC-ICP-QQQ[詳細]
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Sub-ppb detection limits for hydride gas contaminants using GC-ICP-QQQ Hydride gases, such as phosphine and arsine, are important contaminants in process chemicals used in both the petrochemical and semiconductor industries. [詳細]
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Physicochemical characterization of an Indian traditional medicine, Jasada Bhasma detection of nanop Herbsandmineralsaretheintegralpartsoftraditionalsystemsofmedicineinmanycountries.Herbo-MineralmedicinalpreparationscalledBhasmaareuniquetotheAyurvedicandSiddhasystemsofIndianTraditionalMedicine.Thesepreparationshavebeenusedsincelongandareclaimedtobetheveryeffectiveandpotentdosageform.However,thereisdearthofscientificanalyticalstudiescarriedoutontheseproducts,andeventheexistingonessufferfromincompleteanalysis.JasadaBhasmaisauniquepreparationofzincbelongingtothisclass.Thisparticularpreparationhasbeensuccessfullyusedbytraditionalpractitionersforthetreatmentofdiabetesandage-relatedeyediseases.ThisworkpresentsafirstcomprehensivephysicochemicalcharacterizationofJasadaBhasmausingmodernstate-of-the-arttechniquessuchasX-rayphotoelectronspectroscopy(XPS),inductivelycoupledplasma(ICP),elementalanalysiswithenergydispersiveX-rayanalysis(EDAX),dynamiclightscattering(DLS),andtransmissionelectronmicroscopy(TEM).OuranalysisshowsthattheJasadaBhasmaparticlesareinoxygendeficientstateandaclearlyidentifiablefractionofparticlesareinthenanometersizerange.ThesepropertieslikeoxygendeficiencyandnanosizeparticlesinJasadaBhasmamightimpartthetherapeuticpropertyofthisparticulartypeofmedicine.[詳細]
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Analysis of Polybutadiene by GPC Triple Detection with the Agilent 390-MDS Multi Detector Suite Analysis of Polybutadiene by GPC Triple Detection with the Agilent 390-MDS Multi Detector Suite[詳細]
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Analysis of PAHs in soil according to EPA 8310 method with UV and fluorescence detection This Application Note describes a reproducible method according to EPA 8310 for sample preparation and HPLC analysis of PAHs in soil with good recovery rates, and detection limits that fulfi ll regulatory requirements.[詳細]
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AN54 Determination of Sulfite in Food and Beverages by Ion Exclusion Chromatography with Pulsed Amperometric Detection AN54 Determination of Sulfite in Food and Beverages by Ion Exclusion Chromatography with Pulsed Amperometric Detection[詳細]
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課件
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Advances of Optical Rotation Detection
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