随机游动局部时的某些极限性质

Let X,X1,X2,...be i.i.d.random variables with EX2 δ<∞(for some δ>0).Consider a one-dimensional random walk S={Sn}n≥0,starting from S0=0.Let ξk]=x}.A strong approximation of ξ*(n) by the local time for Wiener process is presented and the limsup-type and liminf-type laws of iterated logarithm of the maximum local time ξ*(n) are obtained.Furthermore,the precise asymptotics in the law of iterated logarithm of ξ*(n) is proved.     

半枝莲中铜,锰,锌的初级形态分析

按照微量元素初级形态分析要求,对抗癌中药半枝莲的原药、头煎、二煎、及其残渣、用0.45μm膜分离煎液所得的颗粒物及可溶态共7种样品中的铜、锰、锌进行测定。通过计算得到一系列形态分析参数。其中原药中微量元素含量Cu 18.56×10~(-6),Zn 149.4×10~(-6),Mn 218.8×10~(-6)。头煎提取率:Cu32.67％、Zn 43.69％、Mn 44.49％。二煎提取率:Cu 1.61％、Zn 16.13％、Mn 5.01％。