推动居民积极参与体育锻炼不仅是“健康中国”建设的内在要求,也是提升居民健康水平的必然选择。探索居民体育锻炼行为的潜在影响因素及作用机制,可为提升我国居民体育锻炼水平提供干预方向和路径,是进一步推动全民健身计划顺利开展的...推动居民积极参与体育锻炼不仅是“健康中国”建设的内在要求,也是提升居民健康水平的必然选择。探索居民体育锻炼行为的潜在影响因素及作用机制,可为提升我国居民体育锻炼水平提供干预方向和路径,是进一步推动全民健身计划顺利开展的关键环节之一。使用中国健康与营养调查(China health and nutrition survey,CHNS)全国大样本调查数据探析健康素养对居民体育锻炼行为的影响及作用机制,发现健康素养、健康信念、年龄世代、性别、城乡类别、教育程度、配偶状况、个人收入会影响居民体育锻炼行为;健康信念在健康素养对居民体育锻炼行为的影响中起中介作用。鉴于提升居民健康素养、加强居民健康信念在促进居民体育锻炼行为中的显著作用,应加强对不同年龄居民体育健康知识的宣传和普及,进一步提升居民健康信念水平,倡导居民将积极参与体育锻炼作为健康生活方式的重要内容。展开更多
The age-structure of natural population of Zoysia japonica in Xiuyan County of Liaoning Province was studied by generational method. The results showed that the highest tiller age class was three, but 1st age class ti...The age-structure of natural population of Zoysia japonica in Xiuyan County of Liaoning Province was studied by generational method. The results showed that the highest tiller age class was three, but 1st age class tillers held dominant posi-tion with proportions over 95% in each month during the growing seasons. The 2nd age class and 3rd age class tillers were minority in the population. So Z. japonica population was an expanding population. The zero age class buds on the rhizomes were dominant in buds age structures. The proportion of buds to tillers on quantity in each month was about 30% to 40% and reached the highest at the end of September. The increasing of buds proportion before dormancy guaranteed the quantity of tillers in the next spring. The biomass of 1st age class tillers changed with time. The biomass kept increasing from April to July and reached the highest at the end of July and then decreased.展开更多
This paper reports petrological and geochemical features and zircon U-Pb age of plagiogranite from the Hongliugou-Lapeiquan ophiolitic melange belt in the northern Altyn Tagh. The zircon U-Pb dating results yield a me...This paper reports petrological and geochemical features and zircon U-Pb age of plagiogranite from the Hongliugou-Lapeiquan ophiolitic melange belt in the northern Altyn Tagh. The zircon U-Pb dating results yield a mean ^238U/^206pb age of 512.1 ± 1.5 Ma, representing an emplacement time of the plagiogranites in the Middle Cambrian. The plagiogranites are interpreted to have derived from anatexis of hydrated amphibolites by ductile shearing during transports of the oceanic crust. Thus it is believed that the formation age of such type of plagiogranite was coeval to or slightly younger than the spreading of the Hongliugou-Lapeiquan limited oceanic basin. The new results from the plagiogranites suggest that an oceanic basin existed in the northern Altyn area during the Middle Cambrian.展开更多
文摘推动居民积极参与体育锻炼不仅是“健康中国”建设的内在要求,也是提升居民健康水平的必然选择。探索居民体育锻炼行为的潜在影响因素及作用机制,可为提升我国居民体育锻炼水平提供干预方向和路径,是进一步推动全民健身计划顺利开展的关键环节之一。使用中国健康与营养调查(China health and nutrition survey,CHNS)全国大样本调查数据探析健康素养对居民体育锻炼行为的影响及作用机制,发现健康素养、健康信念、年龄世代、性别、城乡类别、教育程度、配偶状况、个人收入会影响居民体育锻炼行为;健康信念在健康素养对居民体育锻炼行为的影响中起中介作用。鉴于提升居民健康素养、加强居民健康信念在促进居民体育锻炼行为中的显著作用,应加强对不同年龄居民体育健康知识的宣传和普及,进一步提升居民健康信念水平,倡导居民将积极参与体育锻炼作为健康生活方式的重要内容。
基金This study was supported by the NKBRSF (G1999043407-1) Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX2-406+3 种基金 SCXZD0101) NKTRDP (2001BA510B-07 2002BA516A20) and Education Committee Projects of Liaong Province (990121400
文摘The age-structure of natural population of Zoysia japonica in Xiuyan County of Liaoning Province was studied by generational method. The results showed that the highest tiller age class was three, but 1st age class tillers held dominant posi-tion with proportions over 95% in each month during the growing seasons. The 2nd age class and 3rd age class tillers were minority in the population. So Z. japonica population was an expanding population. The zero age class buds on the rhizomes were dominant in buds age structures. The proportion of buds to tillers on quantity in each month was about 30% to 40% and reached the highest at the end of September. The increasing of buds proportion before dormancy guaranteed the quantity of tillers in the next spring. The biomass of 1st age class tillers changed with time. The biomass kept increasing from April to July and reached the highest at the end of July and then decreased.
基金financially supported by the China Geological Survey (Grant No. 1212010911025)National Natural Science Foundation of China (Grant No. 41002020)
文摘This paper reports petrological and geochemical features and zircon U-Pb age of plagiogranite from the Hongliugou-Lapeiquan ophiolitic melange belt in the northern Altyn Tagh. The zircon U-Pb dating results yield a mean ^238U/^206pb age of 512.1 ± 1.5 Ma, representing an emplacement time of the plagiogranites in the Middle Cambrian. The plagiogranites are interpreted to have derived from anatexis of hydrated amphibolites by ductile shearing during transports of the oceanic crust. Thus it is believed that the formation age of such type of plagiogranite was coeval to or slightly younger than the spreading of the Hongliugou-Lapeiquan limited oceanic basin. The new results from the plagiogranites suggest that an oceanic basin existed in the northern Altyn area during the Middle Cambrian.
