钱惠民主教到江阴看望教友并视察爱国会工作

江苏省天主教爱国会副主任、南京教区主教钱惠民于3月16日—19日来江阴市看望教友并视察爱国会工作。 80高龄的钱主教受到市委统战部:市政府民宗科和市天主教爱国会的热情欢迎,1300多名教友喜迎主教进南门天主堂举行大礼弥撒。钱主教在进行了几项宗教活动后,对神长、教友讲了话。

由一类函数方程确定的周期函数

众所周知,若f(x)在定义域内满足函数方程f(x+T)=f(x),就称f(x)为周期函数,然而在数学实践中,可发现不少函数方程,由它们确定的函数也是周期函数。了解和熟悉这些函数方程,对我们研究函数的性质会有一定的帮助。限于篇幅,本文以下只讨论“分式型”函数方程确定的周期函数。

Analysis of Mineral Elements in 13 Famous Tea Varieties in Sichuan Province

This study was to analyze the mineral elements in famous tea varieties in Sichuan Province. Eighteen mineral elements in the samples of 13 famous tea varieties in Sichuan Province were measured via related instruments. The results showed, of all the 18 measured samples, that the contents of K, P, S, Ca and Mg were relatively higher（ 〉1 500 mg/kg） in famous tea varieties in Sichuan Province, while those of Ba, Cr, V, Co and Se were relatively lower（ 〈 10 mg/kg） ; compared to common green tea, the famous tea varieties in Sichuan Province contained higher contents of K, Zn, P, Na, Ni, Cu, S, Se and Co（0.38% -115.65% higher than that in common green tea）, and lower contents of Mg, Mn, AI, Ca, V, Rb, Fe and Cr（7.20% -46.67% lower than that in common green tea）; of the 13 tested tea varieties, Hongyanyingchun, Yongchuanxiuya and Qingchengxueya were rich in mineral elements, while Yuchengyunwu and Yuqiancha lacked in mineral elements. The re- suits show that Hongyanyingchun, Yongchuanxiuya and Qingchengxueya are the elites in the famous tea varieties in Sichuan Province.