利用三次B样条函数作等值线分析

为了解决传统地图等高线、天气图等值线手工分析的缺点,而以计算机自动分析作替代。通过考察插值、拟合几种数学方法,提出如何应用三次B样条函数,处理格点数据,寻找等值控制点,进行曲线拟合,这一方法具有客观化程度高、分析速度快且线条光滑等特点。     

软枣猕猴桃叶化学成分研究

从中药软枣猕猴桃Ainidia arguta(Sieb et Zucc)Planth ex Miguel的叶正丁醇提取物中分离并鉴定了2种结晶性成分,经理化常数测定及光谱分析,证明为β—谷甾醇(β—Sitosterol)和2α3α,24—三羟基—12—烯—28—乌苏酸(2α,3α,24—trihydroxyurs—12—en—28—oicacid)均为首次从该植物中分得。     

试论春秋战争中的礼

礼贯穿于春秋时期战争的整个过程中。其内容主要包括战争过程中的祭祀、占卜、“致师”、“献捷”、“饮至”等制度化环节，某些战争规则以及战争参与者礼仪性的措辞和举止。春秋时期战争中的礼具有明显的过渡性特征：在部分保留西周的形式和精神的条件下逐渐衰落。礼在当时之所以呈现这种特殊的面貌，有其深刻的背景因素：在春秋时期的社会大变革中，社会各阶层力量的重组推动了贵族社会的瓦解，作为贵族宗族组织重要维系的礼制亦随之衰落；但同时，瓦解中的旧秩序和旧意识形态仍对社会成员的思想和行为具奄一定的约束力，     

线性滴定法测定碱性蓝—6B的离解常数

本文应用线性滴定法测定了指示剂碱性蓝—6B的离解常数,采用松下宽等的方法并结合线性回归分析法中的最小二乘法对数据进行了处理和作图,得出了碱性蓝—6B在95％乙醇溶液中的离解常数,并在实验过程中,经多次认真的观察,确定其变色PH范围为:9.5～11.2,颜色由蓝变红。     

三种贝母核型的比较研究

The present paper deals with a comparative karyotypic study of three species in Fri- tillaria-F. thuncergii Miq., F. anhuiensis S.  . Chen et S. F. Yin and F. hupehensis Hsiao et K. C. Hsia.  The karyotype of F. anhuiensis S. C. Chen et S. F. Yin is first reported.       The karyotypes of the three species of Fritillaria are rather similar, all with K(2n)=24= 2m+2sm+12t+4st+4m (SAT), showing a close interspecific relationship.  They all have two pairs of st chromosomes, one of which is the third chromosome in all the three species studied, but the other is the seventh in F. thunbergii Miq, the eighth in F. anhuiensis S. C. Chen et S. F. Yin, and the fifth in F. hupehensis Hsiao et K. C. Hsia.  It tells us that there are some differences in their karyotypes.  All of the three species possess two pairs of satellite chromosomes with the satellites located on the long arms. A heterochromatic zone is found sometimes on long arms of No. IX chromosome in each species of Fritillaria and on one of No. I chromosomes in both F. thun- bergii Miq. and F. anhuiensis S. C. Chen et S. F. Yin, a chromosome polymorphism occurring between populations of Fritillaria. In addition, three B chromosomes are always found in most root-tip cells of F. hupehensis Hsiao et K. C. Hsiao.     

基于Web的数据库应用系统开发技术的思考

浏览器和HTTP协议在全球因特网的成功应用,促进了企业中的Browser/Server结构的迅速推广.基于Web的数据库应用系统通常采用三层（或多层）Client/Server（以下简称C/S）结构,允许用于各类不同的平台和选择相应的数据库应用环境.     

引导关系实证研究—上证A股指数与上证B股指数的引导关系检验

由于我国证券市场中A股与B股产生的原因及一直以来的走势，业内人士对A、B股指之间的关系有不同的意见。本文在理论上对不同观点进行验证，对上证A、B股近两年来500个收盘指数用线性回归模型进行引导关系检验，分析检验结果认为：它们的走势之间基本上独立发展，在部分时间段存在互动关系，股指大幅波动时有A指滞后引导B指的情况，而B指滞后引导A指的情况则很少发生。     

蜘蛛抱蛋属(百合科)的细胞分类学研究(1)——四川七个种的核型

In the work mitotic chromosomes in root-tips of 7 species native to Sichuan Pro- vince were examined and their karyotypes were analysed based on 7-8 cells at mitotic meta- phase, using Levan et al.'s (1964) nomenclature. The list of species and origin of the materials used in this work are provided in the appendix.  The micrographs of mitotic metaphase of all the materials are shown in Plates 1 and 2; the idiograms in Fig. 1, 1-9, and the parameters of chromosomes are provided in Tables 1-9.  All the chromosome countings and karyotypes in this paper are reported for the first time.      Characteristics of the karyotypes may be summarized as follows:      1.  2n=38 are found in all the materials except A. sichuanensis, which has 3 cytotypes, i.e, 2n=38+5B, 2n=38+lB and 2n=38+OB (Plate 2, 1-2, Fig. 1, 5-6).      2.  The karyotypes are of two major types: the karyotype of A. flaviflora falls into 3C in Stebbins's (1958, 197l) classification of karyotypes and those of all the other species into 2C. The two types are also different from each other in the number of large and medium-sized chromosomes pairs and morphology of the first pair of chromosomes (compare Plate 2, 5, Fig. 1, 9 with the other micrographs and idiograms).A. flaviflora with the karyotype 3C also differs from the other species in a series of gross morphological characters: the species is of a yellow and campanulate corolla.      3.  The species with caespitose leaves (A. caespitosa and A. omeiensis) have essentially the same karyotype, which is rather different from those of the species with scattered leaves. There are two pairs of small sm chromosomes (arm ratio ≥1.90) in the former karyotype (Tables 1 and 3), but all the small chromosomes are m or sm with arm ratio <1.80 in the latter karyotypes.     

Meyer-Knig-Zeller积分型算子的Bα空间的逼近

本文研究了Ｍｅｙｅｒ—Ｋｎｉｇ—Ｚｅｌｅｒ积分型算子在Ｂα空间中的逼近问题,得到了逼近阶的一个估计,改进了文献［１］的一个结果