在林间防除瓢虫隐尾跳小蜂后红点唇瓢虫Chilocorus kuwanae Silvestri幼虫对杨圆蚧的功能反应

在林间除掉瓢虫隐尾跳小蜂后，红点唇瓢虫各龄幼虫应用ＨｏｌｌｉｎｇⅡ，型公式计算日极限捕食量分别为：Ｉ龄幼虫－１．６７７的头／日，Ⅱ龄幼虫－２．０８８６头／日、Ⅲ龄幼虫－６．１７６７头／日、Ⅳ龄幼虫－１９．３０５０头／日、Ｖ铃幼虫－３１．３４８０头／日。红点唇瓢虫随幼虫龄期增加捕蚧量明显增大，对杨圆蚧的发生有显著的控制作用。     

光解氧化法消旋合成DL—对硝基—α—乙酰氨基—β—羟基苯丙酮

对L（＋）－苏式－（对硝基苯基）－2－氨基－1，3－丙二醇的KBrO3光解氧化消旋新工艺进行了实验研究，并探讨了反应机理，提出了优化的工艺技术指标．     

可溶性淀粉还原性研究

普通淀粉被制为可溶性淀粉时能显现还原性．其强度可用Somogyi比色法测定．进而可换算其平均分子量和聚合度．     

Splitting an Ordering into a Partition to Minimize Diameter

k consisting of k clusters, with k > 2. Bottom-up agglomerative approaches are also commonly used to construct partitions, and we discuss these in terms of worst-case performance for metric data sets. Our main contribution derives from a new restricted partition formulation that requires each cluster to be an interval of a given ordering of the objects being clustered. Dynamic programming can optimally split such an ordering into a partition P^k for a large class of objectives that includes min-diameter. We explore a variety of ordering heuristics and show that our algorithm, when combined with an appropriate ordering heuristic, outperforms traditional algorithms on both random and non-random data sets.     

黄土高原的VA菌根真菌(VI)─—摩西球囊霉、缩球囊霉及细凹面无梗囊霉

文中报道了产于黄土高原的三个新记录种：缩球囊霉在山地及农田土壤中均有出现，频度高，丰度较小。摩西球囊霉仅出现于农田土壤中，频度较高，丰度中等。细凹面无梗囊霉只出现于一个土样中，频度极低，丰度较小     

旧报纸的酸性生物酶法脱墨

研究了一种新的废纸脱墨工艺，它是用酸性纤维素酶处理旧报纸浆，然后在酸性条件下进行浮选脱墨，此工艺化学药品用量少，有利于环境保护；所得脱墨浆白度高，黄度低；具有较好的滤水性能和相近的强度性能。利用过氧化氢进行漂白时，酶法脱墨浆的可漂性优于化学法脱墨浆。     

Collaborative applications based on the internet

The basic concepts of collaborative applications and some relevant aspects about network communications are introduced. With the examples of some collaborative applications developed by us, several technical problems about collaborative applications, such as loss of data packets, unknown IP address and timedelay, are discussed in detail. And the methods of solving these problems are also provided. Supported by International Cooperation Project (Japan, Jincheng Co. Ltd) Fang Rui: born in 1975, Graduate student     

聚丙烯腈水增塑熔融纺丝工艺研究

研究了聚丙烯腈及其共聚物在水增塑条件下的熔融规律,并在经过改造的φ20mm螺杆熔融纺丝机上进行了纺丝工艺研究。研究表明,聚丙烯腈树脂在一定量的水和热的作用下,由于大分子中氰基之间的作用力被拆散或减弱,可使其变成可进行纺丝成形的增塑熔体;不同含水量、不同组成、不同相对分子质量的聚合体具有不同的水增塑熔点;所纺制的纤维都具有较好的物理机械性能。