本文由 北京盈盛恒泰科技有限責(zé)任公司 整理匯編

2008-06-02 00:00 397閱讀次數(shù)

收藏 評價 舉報

• 分享

立即下載

參與評論

評論

登錄后參與評論

登錄或新用戶注冊

• 微信登錄
• 密碼登錄
• 短信登錄

請用手機(jī)微信掃描下方二維碼
快速登錄或注冊新賬號

微信掃碼，手機(jī)電腦聯(lián)動

注冊登錄即表示同意《儀器網(wǎng)服務(wù)條款》和《隱私協(xié)議》

賬  號：

密  碼：

圖片碼： 看不清？
換一張？

手機(jī)和郵箱號注冊新賬號>> 忘記密碼？

手機(jī)號：

圖片碼： 看不清？
換一張？

短信碼： 獲取短信碼

手機(jī)和郵箱號注冊新賬號>> 忘記密碼？

更多資料

• Discrimination of LongJing green-tea grade by electr

  Discrimination of LongJing green-tea grade by electr[詳細(xì)]

  2008-06-02 00:00

  專利

  |

  • 
  • 
  • 
  • 

• Discrimination of LongJing green-tea grade by ele

  AninvestigationwasmadetoevaluatethecapacityofanelectronicnoseE-nose,PEN2toclassifytheteaqualitygrade.FourteagroupsA120,A280,A380andA600withadifferentqualitygradewereemployed.Intheexperiment,thevolumeofvialandtheheadspacegeneratedtimewereconsideredcorrespondingtothe5gteasamples,andtheoptimumexperimentalprocedurewasdeterminedbyusingthevarianceanalysisANOVA,multivarianceanalysisandprinciplecomponentsanalysisPCA.Theresultsshowedthatthevolumeofvialaffectedtheresultofdiscrimination,andtheheadspacegeneratedtimehadnosigni?canteffectontheE-noseresponse.ThefourteagroupsweremeasuredandresponsevaluesatfourdifferentcollectiontimeswereconductedbyPCA,lineardiscriminationanalysisLDAandarti?cialneuralnetworkANN.OnlyA120,A380andA600couldbediscriminatedbyPCA.However,thefourteagroupswerediscriminatedcompletelybyLDA.TheresponsevalueoftheE-noseat60swasoptimumtobeusedfordiscrimination.ThemethodofANNnetworktopology20-12-4wasperformedand90%oftheotalteasampleswereclassi?edcorrectlybyusingtheback-propagationneuralnetwork.?2006ElsevierB.V.Allrightsreserved.[詳細(xì)]

  2018-08-16 10:00

  產(chǎn)品樣冊

  |

  • 
  • 
  • 
  • 

• Discrimination of storage shelf-life for mandarin by

  Discrimination of storage shelf-life for mandarin by[詳細(xì)]

  2008-05-29 00:00

  產(chǎn)品樣冊

  |

  • 
  • 
  • 
  • 

• Discrimination of storage shelf-life for mandarin

  overthepastyears,electronicnosetechnologyopenedthepossibilitytoexploitinformationonaromaattributetoassessfruitripeninstageduringstorage.theob-jectiveinthisstudywastoevaluatethecapacityofelectronicnoseinmonitoringthechangeinvolatiproductionofmandarinduringdifferentstoragetreatments,andstorageshelf-lifeofmandarinwasevaluatedbymeasuringthechangeivolatileproductionofmandarinusingelectronicnosedevicepen2.bycomparing,storageshelf-lifeofmandarinwasbettdistinguishedusinglineardiscriminantanalysisldathanprincipalcomponentanalysispca.pcaandldaanalysiswerefcienttoclassifymandarinwiththesamestoragetimeinitsrespectivegroups;butthemethodsarenotefcienttoseparatethmandarinsbydifferentstoragetimes.thecorrelationbetweenthemeasuredandpredictedvaluesoffruitqualityattributesuchasolublesolidcontent,acidityandcompressionforceshowspoortoreasonablepredictionperformancebymeansofelectronicnossignals.theresultsprovethatsensors2,7and9intheelectronicnosepen2formandarinhaveahigherinuenceinthecurrentpatterle.hence,nearlyasubsetoffewsensorscanbechosentoexplainallthevariance.thisresultcouldbeusedinfurtherstudiestooptimizthenumberofsensorsandndbetterperformance.[詳細(xì)]

  2018-08-16 10:00

  產(chǎn)品樣冊

  |

  • 
  • 
  • 
  • 

• Capillary zone electrophoretic chiral discrimination

  Capillary zone electrophoretic chiral discrimination[詳細(xì)]

  2024-09-28 00:04

  標(biāo)準(zhǔn)

  |

  • 
  • 
  • 
  • 

• Wear mechanisms experienced by a work roll grade hig

  Wear mechanisms experienced by a work roll grade hig[詳細(xì)]

  2024-09-29 22:57

  標(biāo)準(zhǔn)

  |

  • 
  • 
  • 
  • 

• 超低濕電子防潮箱 電子防潮柜 除濕柜 保存箱生產(chǎn)廠家 Ultra humidity electr產(chǎn)品樣冊

  超低濕電子防潮箱 電子防潮柜 除濕柜 保存箱生產(chǎn)廠家 Ultra humidity electr產(chǎn)品樣冊[詳細(xì)]

  2016-10-18 14:56

  標(biāo)準(zhǔn)

  |

  • 
  • 
  • 
  •