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The scattering of plane surface waves by bottom undulations in channel flow consisting of two layers is investigated by ......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
考虑非自治Logistic模型△xn = pnxn(1 - xn- knλ), n = 0,1,…, (1)其中{pn}n0为非负实数列,{kn}n0为非负整数列且limn→∞(n- kn)= ∞,lim supn→∞ kn= ∞,λ为正常数.我们获得了方程(1)的平衡点λ全......
目的:探讨肾移植患者中影响麦考酚酸(MPA)游离分数的因素。方法:采集23名肾移植术后3个月内患者12h内11个时间点的血浆样本,HPLC法测定......