采用福建省龙岩市2009～2010年对龙岩环境监测站、龙岩师专、闽西大学和龙岩学院4个大气采样点中PM10开展的3期采样数据,利用主因子分析法(principal componentanalysis,PCA)和绝对主因子分析法(absolutely principal component analysi...采用福建省龙岩市2009～2010年对龙岩环境监测站、龙岩师专、闽西大学和龙岩学院4个大气采样点中PM10开展的3期采样数据,利用主因子分析法(principal componentanalysis,PCA)和绝对主因子分析法(absolutely principal component analysis,APCA)对PM10的来源进行研究.结果表明:龙岩市大气主要污染源是二次扬尘/燃煤尘、汽车尾气/道路尘、土壤风沙尘和垃圾焚烧尘;龙岩监测站采样点的主要污染源为汽车尾气/二次扬尘、土壤风沙尘和道路尘;龙岩师专的主要污染源为土壤风沙尘、燃煤尘和汽车尾气/二次扬尘;闽西大学的主要污染源为二次扬尘/燃煤尘、汽车尾气和垃圾焚烧尘;龙岩学院采样点的主要污染源为二次扬尘、汽车尾气/土壤风沙尘和燃煤尘.展开更多
Between the Principal Component Analysis and the Factor Analysis.This paper puts forward the difference and the Identity,which advances positive proposal to some users of this two methods essentially.
为探究淡水鱼品种对速冻青稞鱼面品质的影响,选择7个品种的淡水鱼,通过主成分、因子和聚类分析对淡水鱼品质进行研究。结果表明:得到9个核心品质指标的最佳取值范围,鱼糜胶凝强度1783.35~2295.63 g.mm,持水性0.95%~1.36%,表观状态>7....为探究淡水鱼品种对速冻青稞鱼面品质的影响,选择7个品种的淡水鱼,通过主成分、因子和聚类分析对淡水鱼品质进行研究。结果表明:得到9个核心品质指标的最佳取值范围,鱼糜胶凝强度1783.35~2295.63 g.mm,持水性0.95%~1.36%,表观状态>7.80,食味>7.60,口感>18.74,色泽>8.00,弹性0.30~0.51 mm,咀嚼性0.07~0.15 m J,硬度0.72~0.90 m J。通过这些指标可以对优质淡水鱼品种进行有效的筛选,为速冻青稞鱼面工业化稳定发展提供理论参考。展开更多
The key metabolism factors for bloom of Phyllostachys heteroclada olive and Neosinocalamus affinis Keng were analyzed by using the principal component analysis method.The results showed that GA3,GA3/ABA and starch wer...The key metabolism factors for bloom of Phyllostachys heteroclada olive and Neosinocalamus affinis Keng were analyzed by using the principal component analysis method.The results showed that GA3,GA3/ABA and starch were the most important factors related to bloom of the two bamboo species,followed by soluble sugar,activities of starch enzyme and glutaminase.GA3,starch and soluble sugar with a certain content,and GA/ABA were positively correlated to the bamboo blossom.However,ZT,ZT/ABA and starch enzyme activity had a clear link to bamboo flowering reversion of Phyllostachys heteroclada.In order to know bamboo flowering more clearly,a preliminary simulating model of bamboo flowering was constructed.The model shows that the bamboo flowering procedure is lengthy and complicated.Any influence and break in the procedure would probably accelerate or terminate growth and florescence course,which could be the reason why bamboo florescence is so variable.展开更多
文摘采用福建省龙岩市2009～2010年对龙岩环境监测站、龙岩师专、闽西大学和龙岩学院4个大气采样点中PM10开展的3期采样数据,利用主因子分析法(principal componentanalysis,PCA)和绝对主因子分析法(absolutely principal component analysis,APCA)对PM10的来源进行研究.结果表明:龙岩市大气主要污染源是二次扬尘/燃煤尘、汽车尾气/道路尘、土壤风沙尘和垃圾焚烧尘;龙岩监测站采样点的主要污染源为汽车尾气/二次扬尘、土壤风沙尘和道路尘;龙岩师专的主要污染源为土壤风沙尘、燃煤尘和汽车尾气/二次扬尘;闽西大学的主要污染源为二次扬尘/燃煤尘、汽车尾气和垃圾焚烧尘;龙岩学院采样点的主要污染源为二次扬尘、汽车尾气/土壤风沙尘和燃煤尘.
文摘Between the Principal Component Analysis and the Factor Analysis.This paper puts forward the difference and the Identity,which advances positive proposal to some users of this two methods essentially.
文摘为探究淡水鱼品种对速冻青稞鱼面品质的影响,选择7个品种的淡水鱼,通过主成分、因子和聚类分析对淡水鱼品质进行研究。结果表明:得到9个核心品质指标的最佳取值范围,鱼糜胶凝强度1783.35~2295.63 g.mm,持水性0.95%~1.36%,表观状态>7.80,食味>7.60,口感>18.74,色泽>8.00,弹性0.30~0.51 mm,咀嚼性0.07~0.15 m J,硬度0.72~0.90 m J。通过这些指标可以对优质淡水鱼品种进行有效的筛选,为速冻青稞鱼面工业化稳定发展提供理论参考。
文摘The key metabolism factors for bloom of Phyllostachys heteroclada olive and Neosinocalamus affinis Keng were analyzed by using the principal component analysis method.The results showed that GA3,GA3/ABA and starch were the most important factors related to bloom of the two bamboo species,followed by soluble sugar,activities of starch enzyme and glutaminase.GA3,starch and soluble sugar with a certain content,and GA/ABA were positively correlated to the bamboo blossom.However,ZT,ZT/ABA and starch enzyme activity had a clear link to bamboo flowering reversion of Phyllostachys heteroclada.In order to know bamboo flowering more clearly,a preliminary simulating model of bamboo flowering was constructed.The model shows that the bamboo flowering procedure is lengthy and complicated.Any influence and break in the procedure would probably accelerate or terminate growth and florescence course,which could be the reason why bamboo florescence is so variable.
