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Synthesis Carbon and Silicon Materials by Laser Ablation

Nowadays plasma synthesis by laser ablation plays a very importantrole among the researches about synthesis and production of clusters andnanomaterials. Many salient progresses in this area were realized by laserplasma synthesis. For example....
Synthesis、Structure and Quantum Chemical Studies on Heterocyclic Ligands, Complexes and Supramolecu

A series of 2,3-disubstituted-tetrazole-5-thiones and 3,5-disubstituted-[1,3,4]-thiadiazole-2-thiones were synthesized by using dithizone under the best suitable reaction conditions. These two new synthetic methods feature high yield, good r....
Studies on Synthesis,Structure and Properties of Organoimido Derivatives of Polyoxometalates

The early transition metals(V,Nb,Ta,Mo,W) themselves or combining with each others or other elements are able to form molecular metal-oxide cluster anions, commonly referred to as polyoxometalates or polyoxoanions. Those species are remarkab....
Alkylation of Benzene with Long Chain Olefins Using Ionic Liquid as Catalyst

Linear alkylbenzenes (LAB), as an important intermediate in the detergent industry, are usually mixtures of C10~14 alkyl benzenes obtained by alkylation of benzene with C10~14 mixed paraffin and olefins in the presence of HF or AICI_3 cataly....
Study on Land Use/Land Cover Change and Ecologic Effects in Western Jilin Province

Land use and land cover change (LUCC) is the most significant aspect in the research field of globe changing. Affected by both of natural and artificial factors, the global LUCC and land resources quality varied continually. As a result, it....
Study on Land Desertification and Eco-Environmental Evolvement in the Songnen Plain Abstract

Global changes and sustainable development had been the focus attention of the people all over the world at present. The eco-environment getting worse had been one of the important problems that must be faced by human being. Though dimension....
Biodegradation in Mangrove Planting-aquaculture Coupling System in Pearl River Intertidal Area

This researching program is one part of the project Researching and demonstrating of maricultural technology in mangrove planting-aquaculture system in Pearl River intertidal area(National 863program (2001AA627030)).It focused on bioremediat....
The Research on Environmental Carrying Capacity for Ecotuorism

With the increasing awareness of the importance of a healthy human living environment and with the implementation of the sustainable development strategy, eco-tourism has developed rapidly in the past few years and has become a very importan....
Modeling Study of Nonpoint Source Pollution of Watershed in Three Gorges Reservoir Area

Since 1970', the influence of the nonpoint source (NPS) pollution to the environment has been revealed, and become the main source of damaging the water quality. Because of the uncertainty and extensity, it is impossible to inspect all the n....
The Studies on the Photocatalytic Oxidation Properties of VOCs on Bi_2O_3 Nanoparticles

Today condensed state physicists,chemists and material scientists are Paying attention to semiconductor nanoparticles because of its especial optical property 、catalytic activity,mechanical property,magnetic property and so on. In recent y....
Research and Application of Water Environment Mathematical Model in Forward Modeling and Inversion Nu

Water is the source of the life, water is indispensable in the social development and progress of mankind, it is also the most active factor and influence widely in ecological environment system. Water resource requirement is increasing cons....
Growth Regularity and Adsorption Characteristics of Important Components in Surface Coatings Develope

Natural water system is one of the most important ecosystems that have being contaminated by heavy metals. The speciation and transformation of heavy metals in the aquatic environments are affected significantly by many factors. It is recogn....
Fundamental Research on the Dephosphorization Biotechnology

At present eutrophication caused by phosphorus pollution becomes so serious that water bloom and red tide occur repeatedly, which endangers heavily the living surrounding of human. The biological reduction of phosphate to phosphine can be us....
Cu(Ⅱ) and pH Effect on the Secondary Structure of Regenerated Bombyx Mori Silk Fibroin

Recently, more and more attention has been paid to natural silk, which is produced by a wide variety of insects, such as silkworms and spiders. Although silk impressive mechanical properties are closely related to the primary amino acid sequ....
Tribological Properties of Polytetrafluorethylene and Polyimide Modified with Nanometer Particles

Inorganic nanometer particles shows small-dimension, volume, surface and cooperative effect, once they are blended with polymer to make nanocomposites, then polymer/inorganic nanocomposites will have some unique properties. Therefore, it has....
Research on Extreme Thermophilic (70℃) Two-Phase Anaerobic and Combining Process for Treating High

Up to now, the anaerobic treatment process is still play an important role in the high concentration with organic wastwater from food industrial. But there is not a practically feasible and reliable technique for the high temperature, high c....
Study on Technological Process and Kinetics in the Biological Nitrogen Removal of Slaughter-Process W

The pollution of NH3-N has become the primary problem of the water pollution in China, while the slaughter-process wastewater is the main source of NH3-N pollution. To deal with the difficulties of nitrogen removal in the course of producing....
Bioleaching of Cu, Pb and Zn from Sewage Sludge

The production of excess sewage sludge increases substantially with the development of wastewater treatment facilities, which makes the proper disposal of sewage sludge become more and more urgent and essential. The high content of organic m....
Research on Mechanism and Technological Conditions of Nitrogen-phosphorus Wastewater Treatment by Duc

With the fast development of rural economy and urbanization construction, the problem of environmental pollution caused by nitrogen-phosphorus wastewater from agriculture production and rural life is becoming more and more serious in China.....
Degradation and Treatment of Chlorophenols by Electrochemical Technologies

Chlorophenols (CPs), having high toxicity, biorefractory, bioaccumulation and carcinogenic potential, are widely found in the environment and are significant contaminants at many sites selected for cleanup on the USEPA top priority toxic pol....
Decomposition of P-nitrophenol in Water by Ozonization with Ultrasonic Enhancement

The toxic and bio-refractory pollutant p-nitrophenol is in wide existence, such as in wastewater, chemicals, pesticides and dyes. With the aim of providing theoretical buttress for the treatment of p-nitrophenol, this paper starts with the s....
Initial Processess in TiO_2-assissted Photodegradation of Organic Pollutants

Photoinduced reactivity of TiO_2 has been applied in water and air purification and remediation, photoelectrochemical solar energy conversion, sterilization, antifogging and self-cleaning, etc. Despite the contributions from a number of rese....
The Development of Topological Indices and Their Application to the QSPR/QSAR Studies

Molecular topological indices are important molecular structural descriptors in the QSRP/QSAR studies of the compounds besides physicochemical and quantum parameters. Molecular topological indices are obtained from molecular ichnographic-top....
Study of Preparation and Application Properties of Spinel Ferrites Via Layered Double Hydroxide Precu

Layered double hydroxides(LDHs) are a class of compounds with a lamellar structure with metal ions in the layers generally uniformly distributed at an atomic level. Therefore, in each microstructural unit of the layers, the chemical composit....
Studies of Assembly, Supramolecular Structure and Properties of Sorbic Acid, Lactic Acid and Glyphosa

Using the concept of intercalation chemistry, with layered double hydroxides (LDHs) chosen as host material and organic active agents as guest species, food preservative sorbic acid (SA)-intercalated LDHs, food additive lactic acid (LA)-inte....
Studies about Monolayer Dispersion and Structure of Supported Oxide

Supported oxides have been widely used as catalysts and other materials in modern industries. Oxides can spontaneously disperse on surface of the support, which forms monolayer or sub-monolayer dispersion structure, according to Prof. Xie's....
Preparation and Characterization of Nb_2O_5/α-Al_2O_3 Catalysts and Their Applications in Catalytic

The production of monoethylene glycol (MEG) by non-catalytic hydration of ethylene oxide (EO) is a well-known process, which is usually performed with a large excess of water, e.g. 20 to 25 moles of water per mole of ethylene oxide, at 140-2....
Liquid Phase Hydrogenation of Benzene to Cyclohexene over a Series of Novel Ruthenium Catalyst

Cyclohexene, which has a highly reactive double bond, could be used as an intermediate material for producing adipic acid, nylon-6, nylon-66, and fine chemicals. Cyclohexene can be made by several methods such as dehydration of cyclohexanol,....
Preparation, Characterization and Electrochemical Properties of Catalytic Materials of High Activity

The preparation, property and application of the catalytic materials of tungsten carbides (WC) in the field of catalysis have been comprehensively reviewed in this dissertation, and the various factors affecting the catalytic activity of tun....
Theoretical Study of Isomerization of Butene Catalyzed by Zeolite Acidic Sites

The reaction mechanism of double-bond isomerization of 1 -butene to cis, trans-2-butene and skeletal isomerization of cis, trans-2-butene to isobutene with 3T cluster models simulating zeolites have been systematically studied by using densi....

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