Hemoglobin Biocatalyst Polymerization of Aniline by UV-vis Spectraphotometry

A biocatalytic route for the synthesis of a water soluble and conducting complex of polyaniline (PAN1)/sodium dodecylsulfate (SDS) is presented. Hemoglobin is used in SDS anion surfactant . The polymerization proceeded quickly to result in a homogeneous emeraldine-colored dispersion of PANI. Absorption spectra of PANI/SDS in the aqueous dispersions at various pH values confirms that the reversibility of dedoping and redoping process of PANI/SDS and shows that the transition from emeraldine salt to emeraldine base form occurred at about pH 10.0-11.0 in this anionic micellar system. PANI/SDS in the organic solutions dedoped initially and redoped after 24h.     

软件工程知识的获取

本书是由新加坡世界科技出版公司出版的《软件工程与知识工程丛书》的第14卷。未来的软件系统将分布在整个网络上，并具有专门从事不同活动的代理。每一个代理都具有不同程度上的自治。软件开发机构将会依靠这些代理，利用不同的程序开发过程来生产软件程序。本书从遗传编程的角度讨论了具体的不同之处。作者试图通过设计一个用于演化程序的软件工程环境系统（SWEEP），来使我们对于开发多代理、多过程的未来的洞察力变得更为具体。SWEEP系统使用遗传编程在软件的创建与修改中起了中心的作用。此外，还对度量学特别注意，探索了可通用性、程序肿胀和有效程序长度问题。     

后基因知识发现中有选择的课题

大信息通过量序列与功能基因组技术绘制了人类基因序列图，并且使得大规模人类群体基因型与基因表达的特征勾画成为可能，进一步的研究是对基因组序列的准确注释、基因组与蛋白质之间相互作用和物种的遗传变异性上。基因组注释过程越来越以涉及进化研究和模型生物体的比较方法作为依据。DNA与蛋白质之间的相互作用是生物学相互作用中最基本的，而且在生物学、医学和药物学中具有普遍的意义。     

热带与亚热带环境地球化学

“第三届热带国家环境地球化学专题讨论会”1999年在巴西举行。来自22个国家的170位学者参加了会议，研究了若干与环境和经济相关的问题。本书将前三届会议的成果汇集在一起，介绍了有关过去10年内所累积的热带与亚热带环境地球化学知识。     

"读万卷书,行万里路,学万般艺,占一席地"--浅谈梅陇中学的"三万归一"办学理念

“三万归一”是上海市闲行区梅陇中学的办学理念和办学特色。“三万归一”即“读万卷书,行万里路,学万般 艺,占一席地”。读书是让人求善,行路是让人求真,学艺是让人求美,“三万归一”的教育是一种求善求真求荚的教育理 念,一种符合“三个面向”思想的教育理念,一种人性化的科学先进的教育理念。     

稳定土厂拌站监控系统的设计与实现

针对稳定土厂拌站采用的电子计量微机控制的方式,研究了基于“组态王”工控组态软件的监控系统的设计和实现,分析了稳定土厂拌站配料系统的特点,进而确定了系统的硬件架构;接着介绍了用“组态王”设计监控软件各主要功能模块的基本思想及涉及到的几个技术难点;最后研究了系统实现稳定配比控制的算法,该算法主要采用增量式控制和输出限幅的思想.现场测试实验证明,本系统真实再现了稳定土厂拌站的生产工艺流程,实现了配方/生产报表管理、故障报警等功能,并能对配料过程进行实时控制,保证产品达到一定的配比要求.     

Fabrication of PEDOT/PSS-ZnO nanowire by self-assembly method under vacuum condition

Poly(3,4-ethylenedioxythiophene) (PEDOT) has at- tracted much attention due to its high conductivity, excel- lent environmental stability and chemical processabil- ity[1,2]. PEDOT/PSS dispersion is a water-soluble system using poly(styrene sulfonic acid) (PSS) as the doping counterion during polymerization. The inclusion of PSS results in better solubility and processability to the PE- DOT/PSS aqueous dispersion[3, 4]. Recently, synthesis of one-dimensional (1D) multifunc- tional co…     

Apoptosis of Spodoptera litura larval hemocytes induced by heavy metal zinc

By adding different amount of zinc into the artificial medium of the insect larvae, the zinc-induced apoptosis of the larvae haemocytes of the herbivorous insect Spodoptera litura Fabricius was investigated with flow cytometer. The results showed that the increase of zinc dose in the artificial feed led to the accumulations of zinc in the larval hemolymph and fat body, and more zinc was accumulated in fat body than in hemolymph. The apoptosis of hemocytes was significantly induced at high zinc concentration （1000 mg·kg^-1） in the insect diet, and the apoptosis rate was 63.63%, which was remarkably higher than that at control and lower concentrations （50--500 mg·kg^-1）. This suggests that the high dose of zinc in the artificial diet of S. litura larvae could induce the apoptosis of the larval hemocytes of S. litura.     

High-quality hydrocarbon source rock in the Paleogene sequence of the Ping Chau Formation, Hong Kong

Although petroleum exploration is being conducted in the Hong Kong region, high-quality hydrocarbon source rocks have never been found in this area. The Ping Chau Formation is only Mesozoic-Cenozoic sedimentary rock exposed in Hong Kong and its surrounding areas. The hydrocarbon source rock of the Ping Chau Formation is very rich in organic matters, which has an average total organic carbon (TOC) of 1.9% and chloroform bitumen ““A““ range from 0.14% to 0.24%. The total hydrocarbon content varies from 880 to 1800 ppm and the transformation ratio is specific from 5 to 9. The index of pyrolytic hydrogen is up to about 600 mgHC/gTOC. These data demonstrate the characteristics of the high-quality hydrocarbon source rock. The lamalginite is the major maceral of the source rock of the Ping Chau Formation, and geochemical characteristics also suggest that the organic materials of the source rock are of type I and type Ⅱ1, with abundant gammacerane, γ, β-caro-tane and C24 tetracyclic terpane, which indicate that it was formed in the salt water and brackish water sedimentary environment, and the source rock has evolved into a mature phase. The organic inclusions are found within calcite veins in cracks of the source rock, indicating that hydrocarbon has been generated and a secondary migration has happened. The source rock in the Ping Chau Formation is about 200-300 m thick, thus having considerable hydrocarbon potential. The discovery of the high quality hydrocarbon source rock in the Ping Chau Formation will certainly provide insight on hydrocarbon resource exploration in the South China Sea area.     

一类非线性中立型时滞差分方程的振动性

讨论了一类高阶中立型多时滞差分方程△＇（x（n）-p（n）x（n-k）＋q（n）^mП（j=1）｜x（n-σi）｜a^Sgnx（n-σ1）=0，n=0,1,…的振动性，获得了方程在[^m∑（j=1）]αi=1条件下振动的一个充分条件，同时又给出该方程非振动解趋于零的判据。