The study of metallic nanoaggregates and or clusters in liquid phase is one of the most important branches in modern chemistry and physics, and it is a complement to the study of nanoaggregates in gas phase or vacuum. Strongly in teracting with the medium , the system is very complicated; however, it is possible to control the size and structure of the particles. The study in this field is much more challenging and has potential applications. The ionizing irradiation induced or photochemical induced reduction of metallic ions has permitted us to prepare them etallic nanoaggregates in liquid phase. By optimizing the compositions and the properties of them edium (e. g. pH) , the size and size distribution of the particles have been under control, and the structure of the particles can also be controlled in the near future. Th is method has also other advantages such as narrow size distribution of particles, no chemical reductants and the possibility to prepare bimetallic nanoaggregates. Moreover, it is possible to do the fundamental studies on the formation of the metallic nanoaggregates by pulse irradiation, namely by pulse radiolysis.

The most important aspects in biomineralization are the controlled nucleation and growth of inorganicm inerals from aqueous solutions under the mediation of organic matrix secreted by the cell, and the form ation of the biomineralized materials (bone, teeth, shell etc. ) with the hierarchical structure and special assembly. Biomimetic synthesis in spired by the biomineralization involves the controlled formation of inorganic materials with organic assembly as template, and the production of inorganic materials with special microstructure and excellent physical and chemical properties. Biomimetic synthesis has now become apromising field in inorganic materials chemistry research. The research status of biomimetic synthesis of inorganic materials is reviewed.

Focusing on such aspects as natural drugs, natural pesticides, growth and ecologic regu lators, natural dependence drugs and total synthesis of natural organic compounds, this paper reviews some compounds with greater social significance or academic value, and aims to see in perspective the developmental process of the natural organic compounds with bioactivity, a constant hot research field, and its significance in human life.

Green synthesis is emerging as a new frontier in organic synthesis. The aim of green synthesis and eight possible approaches for achieving it are summarized.

This paper relates the select in class of cell adhesion molecules and the diseases causing from it, and reviews the progress in the inhibitors of cell adhesion selectins in recent years.

Microwave organic reaction enhancement chemistry is a novelmethod. This paper focuses on the applications of microwave irradiation (MWI) in organic synthesis in recent years. 68 references are cited.

Phospholipase A2, C,D are involved in the pathways of cell transmembrane signal transduction, and phospholipase A2 (PLA2) is also a critical enzyme which catalyzes the specific hydrolysis of membrane phospholipids and causes the release of inflammatory and allergic mediators. The studies on phospholipase inhibitors are of significance ininvestigating them echanism of the signal transduction of cell functional expression and the mechanism of some diseases related with PLA2 activation, and also in the development of some antiinflammatory and antiallergic drugs. A brief review on phospholipase inhibitors including their structures, properties, structure effect relation ship and application prospects is given.

A review with 57 references is presented on the principles, the methods and the latest development of electrochemistry applied to living cells. The cell constituent analysis, the biological and physiological behaviors of cells, the sensors for cell analysis,the biochemical effects of electric and electromagnetic fields on living cells are mainly introduced. The applications and new tendency of electrochemistry of living cells are also discussed.

The basic concept and mechanism of genetic algorithms were introduced,their applications in chemistry and chemical engineering were reviewed.

Synthetic methods of biotin, including its commercial synthesis are reviewed. Its biological functions are also briefly described.

Self-propagating high-temperature(combustion ) synthesis(SHS) ,including its history, origin of SHS terminology, ignition technologies, SHS technologies,new method for ceramic compaction, present situation and some of the future challenges is reviewed.