GNES方法计算微波定向耦合器的电感──电磁场理论中几何化、数论消发散方法的推广

应用GNES方法计算微波定向耦合器的电感．证明TEM波模式下柱导体是等矢势体,给出了矢势和面电流的基本奇性积分方程组．具体计算了各种组态下双圆杆内导体的电感,并得到了零级近似的解析表达式．     

滇池微囊藻“水华”藻胆蛋白资源化研究

对从滇池采集的惠氏微囊藻（Ｍｉｃｒｏｃｙｓｔｉｓｗｅｓｅｎｂｅｒｇｉｉ（惠氏微囊藻的多率达９０％以上）和人工养殖螺旋藻的藻胆蛋白和粗蛋白进行了比较研究,结果显示,滇池微囊藻水华中藻胆蛋白的含量占干藻的１５．０７％晒干后的螺旋藻其藻胆蛋白含量８．０５％,喷雾干燥的３．６８％,此外,超滤前破细胞的溶液含小白鼠致死的毒素,超滤提取得到的藻胆蛋白结果为阴性,藻胆蛋白的安全性好。     

一种同步转速状态测定方法及其实现

提出一种同步转速状态测定方法．基于该方法设计了采用霍尔传感器的单片机测量系统．实现了对双螺旋推进器的转速和瞬时相差的准确测量,解决了无法预报“碰撞”现象的难题     

对电子束蒸发沉积的ZnO：Al膜电学性能的研究

使用电子束蒸发法沉积了铝掺杂的氧化锌透明导电膜。     

高层建筑侧向刚度计算的分域样条虚边界元法

采用弹性力学平面问题的分域样条虚边界元法导出了高层建筑平面抗侧力结构的侧向刚度矩阵．该方法只需要输入少量数据,便可准确迅速地计算出平面结构的侧向刚度矩阵,据此即可对整个结构进行静力和动力分析．     

草间小黑蛛的核型

报道了草间小黑蛛的核型,包括染色体数目、形态结构和性染色体组成．材料采自石家庄市郊区．细胞学数据主要来自对混合胚胎细胞有丝分裂中期的观察．实验结果表明：草间小黑蛛细胞的染色体数是雄体细胞２ｎ＝２４,雌体细胞２ｎ＝２６,性别决定机制为Ｘ１Ｘ２Ｏ系统．Ｘ染色体为全部染色体中最小的和次最小的一个（对）．对其Ｃ－显带标本观察表明,所有染色体均为端或亚端着丝粒染色体,每个染色体都有其特点．     

Almost sure convergence of weighted sums of NA sequences

For double arrays of constants {a _ni, 1≤i≤k _n, n≥1} and NA r.v. 's {X _n, n≥1}, conditions for almost sure convergence of are given. Both casesk _n ↑ ∞ andk _n=∞ are treated. A Marcinkiewicz-type theorem for i. d. NA sequences is obtained as a special case. Supported by the National Natural Science Foundation of China Cheng Riyan: born in 1968, MS student     

An independent microbial flora of the epithelium and its role in the ecomicrobiology of the rumen

IT has been suggested that the bacterial flora of the rumen should be considered as three distinct, interacting populations-the bacteria of rumen fluid (the population which has been studied most extensively), the bacteria associated with food particles, and the bacteria adhering to the epithelial wall of the organ(1). Until now, studies of the 'epithelial' population have been restricted to examination of postmortem samples of wall tissue and its attached bacterial flora(2-5). A recently developed technique(6) for feeding young sheep for long periods solely by infusion of protein and other essential nutrients into the abomasum, and of volatile fatty acids and bicarbonate buffer into the rumen, has provided us with an opportunity to study in isolation the role of the bacterial population of the wall in the ecomicrobiology of the rumen in the living animal. Our studies show that this population can exist independently of the other two populations, that it is primarily responsible for urea digestion in the rumen and that it initiates breakdown of dead epithelial tissue. Furthermore, our results point to an inverse relationship between ammonia concentration and ureolytic activity in rumen fluid, which may account for the control which ammonia exerts over flux of urea across the rumen wall(7-9).     

等张运动与等长运动对高血压患者的心血管反应及脂蛋白代谢的影响

目的：比较等张运动与等长运动对高血压患者的心血管反应及脂蛋白代谢的影响，为高血压病运动处方的制定提供理论依据。方法：对45例老年高血压患者随机分成主要基线资料具有可比性的三组，A组采用等张练习，B组采用等长练习，C组采用等长练习＋等张练习。观察运动训练16周后血压及血脂的变化。结果：所有受试者运动训练后血压降低（P＜0.05）、血脂水平得以改善，其中以C组最为明显（P＜0.01）。结论：等张运动与等长运动相结合的全面的运动康复训练方案可以有效改善高血压患者的血压与血脂水平，有利于高血压病的康复，是高血压病运动处方的首选。