State Administration for Market Regulation and National Standardization Administration of China have approved the following 46 mandatory national standards as well as 2 mandatory national standards with amendment.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 354 voluntary national standards as well as 7 voluntary national standards with amendment.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 25 mandatory national standards as well as 4 mandatory national standards with amendment.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 360 voluntary national standards as well as 9 voluntary national standards with amendment.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 34 mandatory national standards.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 14 national guiding technical docoments for standardization.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 3 voluntary national standards.
State Administration for Market Regulation and National Standardization Administration of China have approved the foreign language versions of the following 60 national standards in foreign language version.
State Administration for Market Regulation and National Standardization Administration of China have approved the foreign language versions of the following 41 national standards in foreign language versions.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 758 voluntary national standards and 6 voluntary national standards with amendment.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 80 national standards in foreign language version.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 85 national standards in foreign language version.
The International Standardization Youth Star Competition is held for three consecutive years.We have witnessed continuous improvement in the competition each year,which is a result of our collective efforts.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 13 national guiding technical documents for standardization.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 48 mandatory national standards.
State Administration for Market Regulation and National Standardization Administration of China have approved the following 76 national standards as guiding technical docoments.
The current study examined the roles of collective self-esteem and personal self-esteem in the relationship between national identity and subjective well-being.Participants were 583 Chinese college students(females=49...The current study examined the roles of collective self-esteem and personal self-esteem in the relationship between national identity and subjective well-being.Participants were 583 Chinese college students(females=49%;mean age=19.25±1.85 years).They completed measures of national identity,collective self-esteem,personal self-esteem,and subjective well-being.Path analysis findings result indicated national identity to influence the students’subjective wellbeing through three pathways:(1)national identity→collective self-esteem→subjective well-being,meaning higher subjective wellbeing with collective self-esteem.(2)national identity→personal self-esteem→subjective well-being,to suggest higher personal self-esteem was associated with subjective wellbeing;(3)national identity→collective selfesteem→personal self-esteem→subjective well-being.Compared to simple mediation models constructed with only personal self-esteem or collective self-esteem as a single mediating variable,the chain mediation model better explains the mediating mechanism of national identity on subjective well-being(the variance explained by the mediating variables increased by 65.38%and 59.26%,respectively).The collective self-esteem and personal self-esteem mediation is consistent with social identity theory,whereby national identity enhances collective self-evaluation,which in turn bolsters personal self-worth and subjective well-being.These findings of the current study offer new insights into how national identity affects subjective well-being in collectivistic culture.展开更多
State Administration for Market Regulation and National Standardization Administration of China have approved the following 261 voluntary national standards.
Located in southern Ningxia Hui Autonomous Region,northwest China,the Liupan Mountain National Nature Reserve covers a total area of 26,783.64 hectares.Established in 1982 and upgraded to national status in 1988,it pr...Located in southern Ningxia Hui Autonomous Region,northwest China,the Liupan Mountain National Nature Reserve covers a total area of 26,783.64 hectares.Established in 1982 and upgraded to national status in 1988,it protects a vital temperate mountainous forest ecosystem on the Loess Plateau.The reserve is centred around the Liupan Mountain range,one of China’s youngest mountain chains,formed by Himalayan tectonic movements.展开更多
AIM:To assess risk factors for epiretinal membranes(ERM)and examine their interactions in a nationally representative U.S.dataset.METHODS:Data from the 2005–2008 National Health and Nutrition Examination Survey(NHANE...AIM:To assess risk factors for epiretinal membranes(ERM)and examine their interactions in a nationally representative U.S.dataset.METHODS:Data from the 2005–2008 National Health and Nutrition Examination Survey(NHANES)were analyzed,a nationally representative U.S.dataset.ERM was identified via retinal imaging based on the presence of cellophane changes.Key predictors included age group,eye surgery history,and refractive error,with additional demographic and health-related covariates.Weighted univariate and multiple logistic regression models were used to assess associations and interaction effects between eye surgery and refractive error.RESULTS:Totally 3925 participants were analyzed.Older age,eye surgery,and refractive errors were significantly associated with ERM.Compared to those under 65y,the odds ratio(OR)for ERM was 3.08 for ages 65–75y(P=0.0014)and 4.76 for ages 75+years(P=0.0069).Eye surgery increased ERM risk(OR=3.48,P=0.0018).Moderate to high hyperopia and myopia were also associated with ERM(OR=2.65 and 1.80,respectively).A significant interaction between refractive error and eye surgery was observed(P<0.0001).Moderate to high myopia was associated with ERM only in those without eye surgery(OR=1.92,P=0.0443).Eye surgery was most strongly associated with ERM in the emmetropic group(OR=3.60,P=0.0027),followed by the moderate to high myopia group(OR=3.01,P=0.0031).CONCLUSION:ERM is significantly associated with aging,eye surgery,and refractive errors.The interaction between eye surgery and refractive error modifies ERM risk and highlights the importance of considering combined effects in clinical risk assessments.These findings may help guide individualized ERM risk assessment that may inform personalized approaches to ERM prevention and management.展开更多
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 46 mandatory national standards as well as 2 mandatory national standards with amendment.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 354 voluntary national standards as well as 7 voluntary national standards with amendment.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 25 mandatory national standards as well as 4 mandatory national standards with amendment.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 360 voluntary national standards as well as 9 voluntary national standards with amendment.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 34 mandatory national standards.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 14 national guiding technical docoments for standardization.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 3 voluntary national standards.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the foreign language versions of the following 60 national standards in foreign language version.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the foreign language versions of the following 41 national standards in foreign language versions.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 758 voluntary national standards and 6 voluntary national standards with amendment.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 80 national standards in foreign language version.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 85 national standards in foreign language version.
文摘The International Standardization Youth Star Competition is held for three consecutive years.We have witnessed continuous improvement in the competition each year,which is a result of our collective efforts.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 13 national guiding technical documents for standardization.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 48 mandatory national standards.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 76 national standards as guiding technical docoments.
文摘The current study examined the roles of collective self-esteem and personal self-esteem in the relationship between national identity and subjective well-being.Participants were 583 Chinese college students(females=49%;mean age=19.25±1.85 years).They completed measures of national identity,collective self-esteem,personal self-esteem,and subjective well-being.Path analysis findings result indicated national identity to influence the students’subjective wellbeing through three pathways:(1)national identity→collective self-esteem→subjective well-being,meaning higher subjective wellbeing with collective self-esteem.(2)national identity→personal self-esteem→subjective well-being,to suggest higher personal self-esteem was associated with subjective wellbeing;(3)national identity→collective selfesteem→personal self-esteem→subjective well-being.Compared to simple mediation models constructed with only personal self-esteem or collective self-esteem as a single mediating variable,the chain mediation model better explains the mediating mechanism of national identity on subjective well-being(the variance explained by the mediating variables increased by 65.38%and 59.26%,respectively).The collective self-esteem and personal self-esteem mediation is consistent with social identity theory,whereby national identity enhances collective self-evaluation,which in turn bolsters personal self-worth and subjective well-being.These findings of the current study offer new insights into how national identity affects subjective well-being in collectivistic culture.
文摘State Administration for Market Regulation and National Standardization Administration of China have approved the following 261 voluntary national standards.
文摘Located in southern Ningxia Hui Autonomous Region,northwest China,the Liupan Mountain National Nature Reserve covers a total area of 26,783.64 hectares.Established in 1982 and upgraded to national status in 1988,it protects a vital temperate mountainous forest ecosystem on the Loess Plateau.The reserve is centred around the Liupan Mountain range,one of China’s youngest mountain chains,formed by Himalayan tectonic movements.
基金Supported by Chengdu Municipal Science and Technology Bureau Key R&D Support Program(No.2023-YF09-00041-SN)。
文摘AIM:To assess risk factors for epiretinal membranes(ERM)and examine their interactions in a nationally representative U.S.dataset.METHODS:Data from the 2005–2008 National Health and Nutrition Examination Survey(NHANES)were analyzed,a nationally representative U.S.dataset.ERM was identified via retinal imaging based on the presence of cellophane changes.Key predictors included age group,eye surgery history,and refractive error,with additional demographic and health-related covariates.Weighted univariate and multiple logistic regression models were used to assess associations and interaction effects between eye surgery and refractive error.RESULTS:Totally 3925 participants were analyzed.Older age,eye surgery,and refractive errors were significantly associated with ERM.Compared to those under 65y,the odds ratio(OR)for ERM was 3.08 for ages 65–75y(P=0.0014)and 4.76 for ages 75+years(P=0.0069).Eye surgery increased ERM risk(OR=3.48,P=0.0018).Moderate to high hyperopia and myopia were also associated with ERM(OR=2.65 and 1.80,respectively).A significant interaction between refractive error and eye surgery was observed(P<0.0001).Moderate to high myopia was associated with ERM only in those without eye surgery(OR=1.92,P=0.0443).Eye surgery was most strongly associated with ERM in the emmetropic group(OR=3.60,P=0.0027),followed by the moderate to high myopia group(OR=3.01,P=0.0031).CONCLUSION:ERM is significantly associated with aging,eye surgery,and refractive errors.The interaction between eye surgery and refractive error modifies ERM risk and highlights the importance of considering combined effects in clinical risk assessments.These findings may help guide individualized ERM risk assessment that may inform personalized approaches to ERM prevention and management.
