Purpose:Interdisciplinary fields have become the driving force of modern science and a significant source of scientific innovation.However,there is still a paucity of analysis about the essential characteristics of di...Purpose:Interdisciplinary fields have become the driving force of modern science and a significant source of scientific innovation.However,there is still a paucity of analysis about the essential characteristics of disciplines’cross-disciplinary impact.Design/methodology/approach:In this study,we define cross-disciplinary impact on one discipline as its impact to other disciplines,and refer to a three-dimensional framework of variety-balance-disparity to characterize the structure of cross-disciplinary impact.The variety of cross-disciplinary impact of the discipline was defined as the proportion of the high cross-disciplinary impact publications,and the balance and disparity of cross-disciplinary impact were measured as well.To demonstrate the cross-disciplinary impact of the disciplines in science,we chose Microsoft Academic Graph(MAG)as the data source,and investigated the relationship between disciplines’cross-disciplinary impact and their positions in the Hierarchy of Science(HOS).Findings:Analytical results show that there is a significant correlation between the ranking of cross-disciplinary impact and the HOS structure,and that the discipline exerts a greater cross-disciplinary impact on its neighboring disciplines.Several bibliometric features that measure the hardness of a discipline,including the number of references,the number of cited disciplines,the citation distribution,and the Price index have a significant positive effect on the variety of cross-disciplinary impact.The number of references,the number of cited disciplines,and the citation distribution have significant positive and negative effects on balance and disparity,respectively.It is concluded that the less hard the discipline,the greater the cross-disciplinary impact,the higher balance and the lower disparity of cross-disciplinary impact.Research limitations:In the empirical analysis of HOS,we only included five broad disciplines.This study also has some biases caused by the data source and applied regression models.Practical implications:This study contributes to the formulation of discipline-specific policies and promotes the growth of interdisciplinary research,as well as offering fresh insights for predicting the cross-disciplinary impact of disciplines.Originality/value:This study provides a new perspective to properly understand the mechanisms of cross-disciplinary impact and disciplinary integration.展开更多
Purpose:This study attempts to disclose the characteristics of knowledge integration in an interdisciplinary field by looking into the content aspect of knowledge.Design/methodology/approach:The eHealth field was chos...Purpose:This study attempts to disclose the characteristics of knowledge integration in an interdisciplinary field by looking into the content aspect of knowledge.Design/methodology/approach:The eHealth field was chosen in the case study.Associated knowledge phrases(AKPs)that are shared between citing papers and their references were extracted from the citation contexts of the eHealth papers by applying a stem-matching method.A classification schema that considers the functions of knowledge in the domain was proposed to categorize the identified AKPs.The source disciplines of each knowledge type were analyzed.Quantitative indicators and a co-occurrence analysis were applied to disclose the integration patterns of different knowledge types.Findings:The annotated AKPs evidence the major disciplines supplying each type of knowledge.Different knowledge types have remarkably different integration patterns in terms of knowledge amount,the breadth of source disciplines,and the integration time lag.We also find several frequent co-occurrence patterns of different knowledge types.Research limitations:The collected articles of the field are limited to the two leading open access journals.The stem-matching method to extract AKPs could not identify those phrases with the same meaning but expressed in words with different stems.The type of Research Subject dominates the recognized AKPs,which calls on an improvement of the classification schema for better knowledge integration analysis on knowledge units.Practical implications:The methodology proposed in this paper sheds new light on knowledge integration characteristics of an interdisciplinary field from the content perspective.The findings have practical implications on the future development of research strategies in eHealth and the policies about interdisciplinary research.Originality/value:This study proposed a new methodology to explore the content characteristics of knowledge integration in an interdisciplinary field.展开更多
[Objectives]This study was conducted to provide technical standards for domestic Spathiphyllum variety description and resource evaluation.[Methods]Through field trials and character surveys of the collected 83 Spathi...[Objectives]This study was conducted to provide technical standards for domestic Spathiphyllum variety description and resource evaluation.[Methods]Through field trials and character surveys of the collected 83 Spathiphyllum varieties,after several revisions by fellow experts,and with reference to the Guidelines for Testing the Specificity,Consistency and Stability of New Plant Varieties:Spathiphyllum(TG/135/3)issued by the International Union For The Protection of New Varieties of Plants,the DUS testing guidelines for Spathiphyllum have been developed,and statistical analysis and other methods were used to study the traits for the guideline.[Results]Thirty two testing traits,including 11 mandatory traits,8 basic traits,10 new traits,and 3 optional traits were finally determined;five traits including plant height,plant width,and leaf length were divided into 7 grades,and 9 traits such as leaf width,spathe length,and spathe width were divided into 5 levels;and the observation method and trait code of the trait spathe depth were adjusted.[Conclusions]The development of this guideline provides a basis for judging the specificity,consistency and stability of Spathiphyllum varieties,and is of great significance to the breeding and protection of Spathiphyllum varieties.展开更多
To ensure authenticity of sesame oil,an authentication technology was proposed using ion mobility spectrometry(IMS)and chemometrics.One-class classification(OCC)methods including one-class partial least squares(OCPLS)...To ensure authenticity of sesame oil,an authentication technology was proposed using ion mobility spectrometry(IMS)and chemometrics.One-class classification(OCC)methods including one-class partial least squares(OCPLS)and one-class support vector machine(OCSVM)were employed to build authentication models for sesame oil.Subsequently,an independent test set was used to validate the constructed models.Validation set of 45 adulterated oils indicated that prediction correction rate of OCPLS model reached 95.6%(43 out of 45).Moreover,the complete set of sesame oils adulterated by sesame oil essence could be identified as counterfeit.Compared with previous studies,OCPLS model could work to identify untargeted adulteration.In conclusion,OCC method could effectively detect adulterated sesame oils containing as little as 10%other vegetable oils.This study provided a rapid screening method for adulterated sesame oil in market surveillance and a reference for developing authentication methods of other edible oils.展开更多
1996 was the first year of Shanghai’s Ninth Five-year Plan in foreign trade. Although the country saw significant readjustment in foreign-related economic policies and great changes in macroeconomic environment, Shan...1996 was the first year of Shanghai’s Ninth Five-year Plan in foreign trade. Although the country saw significant readjustment in foreign-related economic policies and great changes in macroeconomic environment, Shanghai’s foreign economic and trade work stood the test, maintained steady growing development and realized all the goals set展开更多
To evaluate antibacterial activities of edible vegetable oils in China for healthy consumption, we investigated the antibacterial activities of extracts from 6 edible vegetable oils and rapeseed oils at different refi...To evaluate antibacterial activities of edible vegetable oils in China for healthy consumption, we investigated the antibacterial activities of extracts from 6 edible vegetable oils and rapeseed oils at different refining levels on 4 bactria (Staphylococcus aureus,Bacillus subtilis, Escherichia coli and Pseudomonas strains) by disc diffusion test. Results showed that camellia oil had considerable antibacterial activity against E. coli with antibacterial rate of 108.3%. Perilla oil, sunflower seed oil, and flaxseed oil showed the highest antibacterial activities against B. subtilis with the antibacterial rates of 108.3%, 102.8%and94.4%respectively. Moreover, the extracts of rapeseed oils obtained by different processing technologies showed significantly different antibacterial effects. Two crude oils and grade4 rapeseed oil showed antibacterial rates of more than 40%, whereas grade 1 and 2 rapeseed oils showed antibacterial rates of less than 20%. Therefore, it was recommended to use rapeseed oil rather than refined rapeseed oil because of higher antibacterial activities. It was suggested that proper refining processes should be taken to obtain the edible oils with higher antibacterial activities.展开更多
In this study, anthocyanin and fatty acid compositions between black and ordinary peanuts were compared. Results showed that black peanuts contained 93.90±18.36 μg/g of cyanidin, which was significantly higher t...In this study, anthocyanin and fatty acid compositions between black and ordinary peanuts were compared. Results showed that black peanuts contained 93.90±18.36 μg/g of cyanidin, which was significantly higher than that of ordinary peanuts. In addition, although both of black and ordinary peanuts shared some specific fatty acids, 4 fatty acids in black peanuts were significantly different from those in ordinary peanuts, which could be used as markers to distinguish black peanut from ordinary ones. This study might serve as a reference for authenticity identification and further nutritional researches on black peanut.展开更多
Ultraviolet （UV） irradiation is proven to be an effective method to reduce aflatoxin in peanut oil, but the changes of peanut oil quality are not clear, especially in storage life. In this study, impacts of UV irr...Ultraviolet （UV） irradiation is proven to be an effective method to reduce aflatoxin in peanut oil, but the changes of peanut oil quality are not clear, especially in storage life. In this study, impacts of UV irradiation treatment on quality of peanut oil were investigated. Acid value, iodine value, oxidative stability and total phenol content that refer to rancidity and oxidation of oil were estimated under 365 nm UV irradiation processing and during different storage time. Results indicated that acid value was increased slightly under irradi-ation and in storage life while iodine value, total phenol content and oxidative stability de-clined weakly. Changes of these quality indexes were all within safe and acceptable levels. It can be confirmed by this study that UV irradiation is a safe strategy for AFB1 detoxification in peanut oil and not influence upon quality and stability of peanut oil.展开更多
Edible oil is one major nutritional ingredient to human and widely consumed directly. The contamination of aflatoxin B1 （AFB1） in edible oils has been attracted exten-sive efforts due to its hazard to human health a...Edible oil is one major nutritional ingredient to human and widely consumed directly. The contamination of aflatoxin B1 （AFB1） in edible oils has been attracted exten-sive efforts due to its hazard to human health and life. To avoid the digestion of edible oils contaminated by AFB1 the development of rapid and sensitive sensing method for AFB1 is required. Herein, a quantitative, sensitive and rapid method for AFB1 detection in edible oils was proposed by using ultrasensitive time-resolved fluorescent immunosensing （TRFIS） method. This method poses unique advantages from both time-resolved fluorescent sens-ing method and immunochromatographic assay format. The nanospheres were modified with fluorescent europium and then captured the home-made monoclonal antibody against AFB1 （3G1）. After optimization, by using a competitive immunosensing manner, this TRFIS method has a detectable linear range of 0.54-20.0 μg/kg with minimum detectable concen-tration of 0.18μg/kg. It can be completed merely within 10 min with recovery from 87.0% to 121.9%. The agreement was observed between the results by TRFIS and high perfor-mance liquid chromatography （HPLC） methods. This research provides a promising sens-ing method for sensitive and rapid determining AFB1 in edible oils.展开更多
基金funded by the National Natural Science Foundation of China(NSFC)Grant Nos.71921002 and 72174154.
文摘Purpose:Interdisciplinary fields have become the driving force of modern science and a significant source of scientific innovation.However,there is still a paucity of analysis about the essential characteristics of disciplines’cross-disciplinary impact.Design/methodology/approach:In this study,we define cross-disciplinary impact on one discipline as its impact to other disciplines,and refer to a three-dimensional framework of variety-balance-disparity to characterize the structure of cross-disciplinary impact.The variety of cross-disciplinary impact of the discipline was defined as the proportion of the high cross-disciplinary impact publications,and the balance and disparity of cross-disciplinary impact were measured as well.To demonstrate the cross-disciplinary impact of the disciplines in science,we chose Microsoft Academic Graph(MAG)as the data source,and investigated the relationship between disciplines’cross-disciplinary impact and their positions in the Hierarchy of Science(HOS).Findings:Analytical results show that there is a significant correlation between the ranking of cross-disciplinary impact and the HOS structure,and that the discipline exerts a greater cross-disciplinary impact on its neighboring disciplines.Several bibliometric features that measure the hardness of a discipline,including the number of references,the number of cited disciplines,the citation distribution,and the Price index have a significant positive effect on the variety of cross-disciplinary impact.The number of references,the number of cited disciplines,and the citation distribution have significant positive and negative effects on balance and disparity,respectively.It is concluded that the less hard the discipline,the greater the cross-disciplinary impact,the higher balance and the lower disparity of cross-disciplinary impact.Research limitations:In the empirical analysis of HOS,we only included five broad disciplines.This study also has some biases caused by the data source and applied regression models.Practical implications:This study contributes to the formulation of discipline-specific policies and promotes the growth of interdisciplinary research,as well as offering fresh insights for predicting the cross-disciplinary impact of disciplines.Originality/value:This study provides a new perspective to properly understand the mechanisms of cross-disciplinary impact and disciplinary integration.
基金This study was funded by the National Social Science Foundation of China with Grant No.20CTQ024.
文摘Purpose:This study attempts to disclose the characteristics of knowledge integration in an interdisciplinary field by looking into the content aspect of knowledge.Design/methodology/approach:The eHealth field was chosen in the case study.Associated knowledge phrases(AKPs)that are shared between citing papers and their references were extracted from the citation contexts of the eHealth papers by applying a stem-matching method.A classification schema that considers the functions of knowledge in the domain was proposed to categorize the identified AKPs.The source disciplines of each knowledge type were analyzed.Quantitative indicators and a co-occurrence analysis were applied to disclose the integration patterns of different knowledge types.Findings:The annotated AKPs evidence the major disciplines supplying each type of knowledge.Different knowledge types have remarkably different integration patterns in terms of knowledge amount,the breadth of source disciplines,and the integration time lag.We also find several frequent co-occurrence patterns of different knowledge types.Research limitations:The collected articles of the field are limited to the two leading open access journals.The stem-matching method to extract AKPs could not identify those phrases with the same meaning but expressed in words with different stems.The type of Research Subject dominates the recognized AKPs,which calls on an improvement of the classification schema for better knowledge integration analysis on knowledge units.Practical implications:The methodology proposed in this paper sheds new light on knowledge integration characteristics of an interdisciplinary field from the content perspective.The findings have practical implications on the future development of research strategies in eHealth and the policies about interdisciplinary research.Originality/value:This study proposed a new methodology to explore the content characteristics of knowledge integration in an interdisciplinary field.
文摘[Objectives]This study was conducted to provide technical standards for domestic Spathiphyllum variety description and resource evaluation.[Methods]Through field trials and character surveys of the collected 83 Spathiphyllum varieties,after several revisions by fellow experts,and with reference to the Guidelines for Testing the Specificity,Consistency and Stability of New Plant Varieties:Spathiphyllum(TG/135/3)issued by the International Union For The Protection of New Varieties of Plants,the DUS testing guidelines for Spathiphyllum have been developed,and statistical analysis and other methods were used to study the traits for the guideline.[Results]Thirty two testing traits,including 11 mandatory traits,8 basic traits,10 new traits,and 3 optional traits were finally determined;five traits including plant height,plant width,and leaf length were divided into 7 grades,and 9 traits such as leaf width,spathe length,and spathe width were divided into 5 levels;and the observation method and trait code of the trait spathe depth were adjusted.[Conclusions]The development of this guideline provides a basis for judging the specificity,consistency and stability of Spathiphyllum varieties,and is of great significance to the breeding and protection of Spathiphyllum varieties.
基金This work was supported by the National Science and Technology Major Project of China(2017YFC1601700)the National Nature Foundation Committee of P.R.China(31871886)+2 种基金the National Major Project for Agro-product Quality&Safety Risk Assessment(GJFP2019003)the earmarked fund for China Agricultural Research System(CARS-12)the Fundamental Research Funds for Central Non-profit Scientific Institution(1610172018002 and 1610172018012).
文摘To ensure authenticity of sesame oil,an authentication technology was proposed using ion mobility spectrometry(IMS)and chemometrics.One-class classification(OCC)methods including one-class partial least squares(OCPLS)and one-class support vector machine(OCSVM)were employed to build authentication models for sesame oil.Subsequently,an independent test set was used to validate the constructed models.Validation set of 45 adulterated oils indicated that prediction correction rate of OCPLS model reached 95.6%(43 out of 45).Moreover,the complete set of sesame oils adulterated by sesame oil essence could be identified as counterfeit.Compared with previous studies,OCPLS model could work to identify untargeted adulteration.In conclusion,OCC method could effectively detect adulterated sesame oils containing as little as 10%other vegetable oils.This study provided a rapid screening method for adulterated sesame oil in market surveillance and a reference for developing authentication methods of other edible oils.
文摘1996 was the first year of Shanghai’s Ninth Five-year Plan in foreign trade. Although the country saw significant readjustment in foreign-related economic policies and great changes in macroeconomic environment, Shanghai’s foreign economic and trade work stood the test, maintained steady growing development and realized all the goals set
基金supported by National Key R&D Program of China (2016YFF0201803)the National Major Project for Agro-product Quality & Safety Risk Assessment(GJFP2017001,GJFP2017015-02)+1 种基金the earmarked fund for China Agriculture Research System (CARS-13-10B)Fundamental Research Funds for Central Non-profit Scientific Institution (1610172017008)
文摘To evaluate antibacterial activities of edible vegetable oils in China for healthy consumption, we investigated the antibacterial activities of extracts from 6 edible vegetable oils and rapeseed oils at different refining levels on 4 bactria (Staphylococcus aureus,Bacillus subtilis, Escherichia coli and Pseudomonas strains) by disc diffusion test. Results showed that camellia oil had considerable antibacterial activity against E. coli with antibacterial rate of 108.3%. Perilla oil, sunflower seed oil, and flaxseed oil showed the highest antibacterial activities against B. subtilis with the antibacterial rates of 108.3%, 102.8%and94.4%respectively. Moreover, the extracts of rapeseed oils obtained by different processing technologies showed significantly different antibacterial effects. Two crude oils and grade4 rapeseed oil showed antibacterial rates of more than 40%, whereas grade 1 and 2 rapeseed oils showed antibacterial rates of less than 20%. Therefore, it was recommended to use rapeseed oil rather than refined rapeseed oil because of higher antibacterial activities. It was suggested that proper refining processes should be taken to obtain the edible oils with higher antibacterial activities.
基金supported by National Science and Technology Major Project of China(2017YFC1601700)National Nature Foundation Committee of P.R.China(Grants No.31871886)+1 种基金National Major Project for Agro-product Quality&Safety Risk Assessment(GJFP2018001,GJFP2018015-04)FundamentalResearch Funds for Central Non-profit Scientific Institution(1610172018002,1610172018015)
文摘In this study, anthocyanin and fatty acid compositions between black and ordinary peanuts were compared. Results showed that black peanuts contained 93.90±18.36 μg/g of cyanidin, which was significantly higher than that of ordinary peanuts. In addition, although both of black and ordinary peanuts shared some specific fatty acids, 4 fatty acids in black peanuts were significantly different from those in ordinary peanuts, which could be used as markers to distinguish black peanut from ordinary ones. This study might serve as a reference for authenticity identification and further nutritional researches on black peanut.
基金This work was supported by the Natural Science Foundation o f China （31401601）, National Key Project for Agro-product Quality ＆ Safety Risk Assessment, PRC （GJFP2015007）, Special Fund for Grain-scientif-ic Research in the Public Interest （201513006-02）.
文摘Ultraviolet （UV） irradiation is proven to be an effective method to reduce aflatoxin in peanut oil, but the changes of peanut oil quality are not clear, especially in storage life. In this study, impacts of UV irradiation treatment on quality of peanut oil were investigated. Acid value, iodine value, oxidative stability and total phenol content that refer to rancidity and oxidation of oil were estimated under 365 nm UV irradiation processing and during different storage time. Results indicated that acid value was increased slightly under irradi-ation and in storage life while iodine value, total phenol content and oxidative stability de-clined weakly. Changes of these quality indexes were all within safe and acceptable levels. It can be confirmed by this study that UV irradiation is a safe strategy for AFB1 detoxification in peanut oil and not influence upon quality and stability of peanut oil.
基金This work was supported by Special Fund for Grain -scientific Research in the Public Interest （201513006-02）, Special Fund for Agro -scientific Research in the Public Interest （201203094）, Natural Science Foundation of China （31401601）.
文摘Edible oil is one major nutritional ingredient to human and widely consumed directly. The contamination of aflatoxin B1 （AFB1） in edible oils has been attracted exten-sive efforts due to its hazard to human health and life. To avoid the digestion of edible oils contaminated by AFB1 the development of rapid and sensitive sensing method for AFB1 is required. Herein, a quantitative, sensitive and rapid method for AFB1 detection in edible oils was proposed by using ultrasensitive time-resolved fluorescent immunosensing （TRFIS） method. This method poses unique advantages from both time-resolved fluorescent sens-ing method and immunochromatographic assay format. The nanospheres were modified with fluorescent europium and then captured the home-made monoclonal antibody against AFB1 （3G1）. After optimization, by using a competitive immunosensing manner, this TRFIS method has a detectable linear range of 0.54-20.0 μg/kg with minimum detectable concen-tration of 0.18μg/kg. It can be completed merely within 10 min with recovery from 87.0% to 121.9%. The agreement was observed between the results by TRFIS and high perfor-mance liquid chromatography （HPLC） methods. This research provides a promising sens-ing method for sensitive and rapid determining AFB1 in edible oils.
