Based on optimal idea, in this paper we give a adjusting method for whole parameters in mobile cel-lular telecommunication coverage.With mathematics model to describe the problem and to use changing object method,we give an algorithms to overcome the defect that cannot global set optimal parameters for celluar in engi-neering optimization.

In the present paper,we consider the Lotka Volterra type n species competing systems with periodic coeffcients and periodic forced terms.We prove that if the forced terms are negative, the system has at least two positive (componentwise)periodic solutions.

We give an elementary introduction to the soliton and exact solutions in noncommutative field theory. Starting from a through discussion about the representations and some basisc calculations of the flat noncommutative space time, we introduce the concept of noncommutative field theory and proceed to find the soliton and exact solutions in these field theories. These solutions include the instantons and BPS solitons in theories with gauge fields. Applications of these solutions as describing the D branes in open bosonic string and superstring theories are also discussed.

Nanocrystalline TiO² is one of the important compositions in dye sensitized solar cell. To control the size and phase of the nanocrystalline TiO² in the process of the sol gel, the heat treat method and the results of the experiment have been greatly introduced. The D hkl(a) of anatase nanocrystalline TiO² increases with the temperature raising and there is 43% rutile nanocrystalline TiO² in the powders when temperature reach 270℃ and hydrolyze pH～1. The results show that the D hkl(r) of rutile nanocrystalline TiO² is larger than the D hkl(a) of anatase nanocrystalline TiO². Applying the nanocrystalline TiO² in solar cell, the result that measured by the automatic measuring and data acquisition system prove good efficiency with right temperature.

An elaborate dual reciprocity boundary element formulation for axisymmetric problems has been derived. A new function f was proposed to eliminate the singularity on symmetric axis in the original function f used in published papers. The new function f was successfully used to calculate some transient heat conduction and moving boundary condition with phase change.

The methods are studied for treatment an iodometric microdetermination of chromium in waste water. Cr(III) can be reduced from Cr(VI) with Fe(NH ₄) 2(SO₄) 2·6H₂O as reductant then be removed mostly with the co precipitation. The proposed method can be used to treat the waste water with Cr(VI). The microgram amount of chromium system can be determined by iodometric complification method. The method offers 9 fold amplification for Cr(III). The method is based on oxidation of Cr(III) with an excess of periodate, masking the unreacted periodate with molybdate and subsequent iodomertric determination of the liberated iodate. Cr(VI) can be determined by this method after prior reduction to Cr(III) with saturated sodium sulphite in sulphuric acid. When the amount of chromium is less than 340 μg,the average recovery obtained is 99.7%.

The most active deformation in western China occurs in the Tibetan Plateau. Determining the distribution of gravitational potential energy and its effect on active deformation is fundamental to understanding the dynamics of continental deformation. According to the seisimic velocity and gravity data, we estimated the distribution of gravitational potential energy of Tibetan Plateau. Calculation shows that the gravitational potential energy(PE) is 2×1012 ～7×1012 N/m in Tibet Plateau. Its effect on active deformation in Tibetan Plateau was discussed. The computed results show that, given available constraints on rheology, gravitational potential energy are sufficeient to produce the wide variety of rates and styles of observed deformation.

On the basis of total 822 heat flow measurement in the continental area of China, the deep geothermal characteristics of lithosphere of the major tectonic units was studied, which includes the temperature at 40 km depth, the thickness of thermal lithosphere, the cumulated strength and effective elastic thickness (EET) of lithosphere and so on. The results exhibit significantly lateral heterogeneity for heat flow pattern, thermal state and rheological features of lithosphere in China, which resulted from the Cenozoic tectonothermal activities related to the Pacific subduction as well as the collision between India and Asia. According to heat flow values and deep geothermal characteristics, three large scale thermo tectonic domains, i.e. Eastern, Central and Western domain, can be identified in the continental area of China.

Some new researchs on nonlinear computational instability are introduced, the contents are as fol-lows :(1)Three types of representative evolution equations are analyzed, and the close relationship between the nonlinear computational stability and instability of their corresponding difference the properties of their solution is re-vealed ;(2)Nonlinear computation instability problem of conservative difference equations with nonperiodic bound-ary conditions is further discussed, and some effective ways to avoid nonlinear computation instability are included ;(3)Nonlinear computation instability problem of nonconservative difference equationswith aperiodic boundary condi-tion is focused on by using nonlinear advection equations as examples, and “synthetically analysis method” is given to judge their computation stability

This paper overviews the significance, advances and future direction in the glycobiology field. Special emphasis is given to cell cell adhesion which is mediated by the interaction between carbohydrates and carbohydrates binding proteins (CBP). The roles of carbohydrates in the folding of nascent polypeptides, immune system, and cellular signal transductions are also reviewed. The scope also covers carbohydrates in infections, carbohydrates in diseases,and chemical synthesis/structural analysis of carbohydrates. Finally,the features and future directions of glycobiological research are pointed out by the author.

In this paper, we focus mainly on the Differentiated Service (DiffServ) modal which guarantee the QoS of the Internet2, We present its origin, research progress and deployment. Also do we introduce some hotspots of investigation and several new developmental trends. A brief summary is given to conclude the main idea concerning with the latest works.

Capillary electrophoresis(CE)has become a popular separate and analytical technique through the development for 20 years since it was introduced in the early of 1980s.With the combination of traditional elec-trophoresis and modern high performance liquid chromatography(HPLC), CE has been widely used in life science,biochemistry, environmental science, medical science and pharmaceutical chemistry with the advantageous aspects of higher separation effciency, smaller sample volume, lower operation cost and stronger resistance to interferences.The separation of enantiomers,which demands high sensitivity, highselectivity and high separation efficiency, is main challenge to chemistry, especially analytical chemistry.Chromatography techniques, including HPLC, thin layer chromatography(TLC), gas chromatography(GC)and high performance capillary electrophoresis(HPCE), are com-monly used for the chiral separation.However, the disadvantages of long analytical time, expensive chiral column,complicated manipulation and the large volume of solvent waste have limited the application o HPLC,which is the most universal chiral separation method.The rapid developing CE technique has become an attractive alternative for the chiral separation and has been applied to many resarch fields.Amino acids are the fundamental units of protein which is the main component of the living organisms.The sep-aration and analysis of biological moleculars, including amino acid, polypeptide, DNA, nucleic acid and protein, are attractive and difficult topics in analytical chemistry and life science.Therefore, it has momentous academic and clin-ical practice significance to develop simple, fsat, accurate, sensitive methods for esparation and analysis of aminoacids and investigate the relationships between amino acids and senescence, diabetes, liver cancer and coronary dis-eases.The major contents of this dissertation are described in the following chapter.

Based on observed soil carbon density data over wold wide and model results of net primary production, a simple model was built that can be used directly in calculating average soil respiration rate and soil carbon density. The simulated results have been compared with measurements. According to our model results, the recently view that averaged soil respiration rate does not vary with temperature is under debatable. Using this model, we simulate the distribution of potential soil carbon density on global scale,the calculated global soil organic carbon pool is 1152 Pg. This simple model can successfully simulate the large differences of soil carbon density at different precipitation (or soil moisture) situations.

Three bioactivity variant neurotoxins, BmK M1, M4 and M8, have been purified from venom of the Chinese scorpion Buthus martensii Karsch. They possess distinct toxic activity on mice in vivo with different electrostatic properties. The relative toxicities of BmK M1, M4 and M8 are 13.3:2.5:1, which interestingly correspond to their respective pI values, ranging from basic to acidic, of 9.01, 7.53 and 5.30. In addition, the BmK M1 and M4 belong to α like toxin, while the BmK M8 belongs to classical α toxin so that they may bind to Na ₊ channel at different microsite. The crystal structures of BmK M1, M4 have been determined and refined at resolutions 0.17 nm (M1), 0.13 nm (M4), respectively. The structure investigations in association with the site mutagenesis experiments revealed three significant surface areas: Face A and B relevant to the toxic potency expression; Site RC involved in the receptor binding specificity. Interestingly the substitutions with negative charge potentid residues in the Face B will dramatically reduce the toxic activity of the molecule, which suggested a "Charge potential mediated mechanism" for toxicity expression. Based on the high resolution structure, the most interesting finding is a unusual non prolyl cis peptide bond (residue 9～10) appeared in the site relative to receptor binding of the α like toxin BmK M1 and M4, but not in the classical α toxin BmK M8. The observations provide a possible structural basis for the α like toxin receptor binding site selectivity and propose a " cis peptide bond mediated mechanism" for the toxin receptor binding specificity. This manifested a way to achieve high levels of molecular specificity through the strained backbone geometry.