壳聚糖对重金属离子的吸附行为

壳聚糖是一种天然高分子化合物，高分子链段中含有－ＮＨ２，－ＯＨ活性基团，与重金属离子形形茂配位化合物，可制成高分子吸附剂吸附重金属离子，以Ｃｕ＾２＋和Ｐｂ＾２＋为研究对象，探讨了外界因素温度、ＰＨ、时间对吸附的影响，并从等温吸附方同发，研究了吸附的内在机理。     

Short-range linkage relationships, genomic organisation and sequence comparisons of a cluster of five HSP70 genes in Fugu rubripes

Twelve cosmids containing sequences resembling genes encoding members of the 70-kDa heat-shock protein family, HSP70, have been isolated from Fugu rubripes. They can be broadly divided into three groups of overlapping cosmids. Restriction analysis and sequencing of one set of five cosmids have revealed five intronless Fugu HSP70 genes spanning 42 kb, arranged in a combined head-to-head, tail-to-tail and head-to-tail orientation. The levels of DNA and amino acid identity are very high with respect to one another, and are most similar to HSP70 sequences linked to the major histocompatibility complex (MHC) region in other species. Putative heat-shock consensus elements are identified. Non-HSP70 sequences with homology to known genes have been found physically linked to this Fugu HSP70 cluster: the Drosophila melanogaster SOL gene, the Drosophila melanogaster nemo gene, the Caenorhabditis elegans T17E9.1 gene and the sequence encoding the serine protease domain. The linkage relationships described here so far bear no resemblance to those of HSP70 in other organisms. Convergence of mammalian HSP70 and MHC class I and II loci probably occurred after fish had diverged. Received 17 November 1998; received after revision 25 February 1999; accepted 26 February 1999     

电器产品复杂零件导电触片级进模设计

应用大型三维Pro/E软件，设计了电器产品复杂零件导电触片的多工位自动级进模，系统解决了模具排样的难点，制定了零件的加工工艺，设计了模具结构。     

上下极限的概念在极限教学中的作用

讨论在《数学分析》课程中引入上、下极限概念的教学的意义 .指明了它对提高学生分析能力的作用     

用GAL构成无计数误差的倍频鉴相器

从逻辑和时序上说明了无计数误差四倍频鉴相器的结构，为使此结构满足GAL的“组合逻辑结构”，给出了满足GAL的逻辑方程。     

函数f(x)=1/(1+x)的迭代表达式序列及其收敛性定理

讨论了函数ｆ（ｘ）＝１／（１＋ｘ）的迭代表达式的表示形式，并应用这一表示形式证明了一个数学实验结果     

金刚石膜中的黑色层状缺陷及非相关成因

对高功率直流电弧等离子体喷射法制备的金刚石膜中的黑色层状缺陷进行了研究。沉积过程中通过改变沉积速率；适量加氧、加水、加氮；采用高纯气体；调整漏气率；多台设备并联运行；单台设备反复运行和交换零部件多种手段，均未找到其成因。中对用黑厚时位式新理念的研究作了报导。证实夹层成因和膜制备过程中的上述因素间无密切关系。     

一个推广的Borel强大数定律的改进

Borel通过研究Bernoulli试验,首先给出了其强大数定律,已有文献给出了一个推广的Borel强大数定律.作者改进了这个结果,将其中的条件dn=O(1/n)减弱为dn=O(1/nα),α>0.另外,将此结果推广到有界的随机变量序列的情形,给出其Borel强大数定律.     

Orlicz序列空间的全连续性质

本文给出了Ｏｒｌｉｃｚ序列空间具有全连续性质ＣＣＰ的充分必要条件。结果显示在Ｏｒｌｉｃｚ序列空间中，ＲＮＰ、ＰＣＰ、ＣＰＣＰ性质与ＣＣＰ性质等价。     

Mitochondria1 cytochromeb sequences variation of Protura and molecular systematics of Apterygota

Mitochondrial cytochromeb genes of about 450 bp fragments from 3 proturan species, 5 collembolan species and 2 dipluran species have been sequenced. The number of nucleotide substitutions and Kimura 2-parameter distances have also been calculated, and a series of molecular phylogenetic trees reconstructed by using parsimony and distance methods. The proturan, collembolan and dipluran species have evolved monophyletic groups. The results suggest that Protura and Collembola are sister groups, while Diplura is more or less demonstrating a closer phylogenetic relationship to the pterygotan insects. The phylogeny and their systematic position of protura and other groups are also discussed.