TiO₂-based heterogeneous photocatalysis has the potential to degrade environmental pollutants by solar energy. The contaminants can be mineralized to CO₂,H₂O and other small molecules. The paper deals with the principle and mechanism of photocatalysis on TiO₂, the ways for enhancing photocatalytic efficiency, and the methods and problems of TiO₂photocatalysis for degradations of several typical contaminants. The recent developments in TiO₂ photocatalysis and its application prospects for the treatment of waste water are introduced.

This paper describes the methods to form silver clusters in solid, liquid and gas phases; the properties of clusters such as absorption bands, ESR, redox potential, EA and IP, and their catalytic behaviours in photo-splitting water and photographic development processes. The theoretical calculation methods, the calculated properties such as geometry, EA and IP of silver clusters are also discussed. The trends of research on this subject are prospected.

The mechanism of CO₂ adsorption and activation on metal catalyst and metal oxide catalyst and reaction performance of various adsorption states have been discussed. An effective way of using CO₂ as a kind of mild oxidant in chemical processes has been presented.

Recent developments in the applications and syntheses of titanium silicalite molecular sieves as a new kind of catalytic materials were reviewed, including developments of TS21 hydro thermal synthesis methods, raw materials, templating agents,affecting factors, TS21 synthesis by isomorphous replacement, charaterization, active sites, application softitanium silicalite catalytic oxidation system using hydrogen peroxide, and research of mesoporous titanium silicalite molecular sieves. Suggestions for further research were proposed.

Artificial nucleases are compounds that cleave nucleic acids and function as natural restriction enzymes with high activity and selectivity. They consist of nucleic acid recognition and catalytic scission systems, and can mimic the natural restriction enzymes by combining these two functions. This paper describes the cleavage of nucleic acids by lanthanides and their complexes and the acting mechanism.

The recent advances in inorganic and organometallic dendritic polynuclear complexes at abroad have been reviewed. Emphasis is given to the description of synthetic methods, specific properties, catalytic reactions and the prospect of applications of inorganic and organometallic dendrimers.

The paper introduces the quantum chemical and experimental studies on the configuration, state of aggregation and crystal structure of azodyes. The structural effect on the photo stability, the photodegration mechanism of azodyes and the modern experimentation on laser flash photolysis and time resolved resonance Raman spectroscopy for the photodegradation mechanism of azodyes are reviewed.

The interaction of ligands with their receptor macromolecules are central to most of biological processes. Nowadays, there are accumulating evidences of that ligand-receptor interaction can be simulated with computer modeling and theoretical calculation methods. Some of these methods and their applications in drug design were reviewed in this paper.

Three-dimensional(3D) searching in a database of molecules based on their 3D characteristics has become a fast and effecive approach to discover leading compounds.This review describes its principle, development and applications in drug design.

A Review with 82 references is presented on the analytical methods of apoptosis (programmed cell death, PCD). It describes the morphological and biochemical characterization of apoptosis and emphasizes on the analytical methods of apoptosis,including morphological observation , agarosegel electrophoretic analysis, flow cytometry, insitu DNA labelling analysis, anti-ssDNA MA bs and polymerase chain reaction (PCR).The trend of analytical methods of apoptosis is also discussed.