Four novel Cobalt(Ⅱ) complexes have been synthesized and characterized, namely [Co2(4I-TPHA)(L) 4 (ClO4)2 (L denotes 1, 10-phenanthroline(phen)(1), 5-nitro1, 10-phenanthroline(NO2-phen)(2), 2,2'- bipyridyl(bpy) (3) and 4. 4'-dimethyl-2, 2'bipyridyl (Me2bpy) (4). respectively),where 4I- TPHA is the tetraiodoterephthalate dianion. The magnetic studies indicate that a weak antiferromagnetic spin exchange imteraction exists between the metal ions.

 The characterization and adsorption kinetics of azobenzene self-assembled monolayers(C8AzoC3 SAMs) on ld were reported. By assembling for about 24 hours, highly ordered and closely packed C8AzoC3 SAMs can be formed on ld surface and showed no electrochemical response, which were evidenced by contast angle titration, atomic force microscopic abservation and electrochemical measurements. The adsorption kinetics of C8AzoC3 molecules on ld was studied by controlling the assembling time and accompanying with dynamic characterization. The adsorption kinetic rate constant was estimated to be (1.2±0.2) × 103 mol-1•dm3•s-1 by using the data of contast angle titration and electrochemical measurements. A simple model of the self assembling process was suggested to illustrate the unique electrochemical behavior of C8AzoC3 SAMs.

 Polarized UV-Visible absorption and rotation-angle second harmonic generation (SHG) techniques were used to investigate the in-plane symmetry in Y-type Langmuir-Blodgett(LB) multilayers of a hemicyanine dye interleaved with inert material arachidic acid. Dipping-induced anisotropy of the molecular orientation with a unique reflection symmetry was enhanced with increasing the dipping speed.

 In this paper, we have calculated the second-order nonlinear optical polarizabilities of a series of substituted cinnamic acid derivatives using the CNDO/S-CI quantum chemical calculation program and studied the structure dependence of their nonlinear optical properties. The results revealled that this kind of compounds have fairly large second-order polarizabilities. And we fourld that there is a close relationship between the structure and the values of β. We hope that our study will be useful for the experiments and further researches in this interesting field.

 The viscosities of hydroxypropyl Sesbania Gum, carboxyl hydroxypropyl Sesbania Gum and modified carboxyl hydroxypropyl Sesbania Gum at different temperatures and their pyrolysis kinetics have been studied. The kinetic parameters under air and N2 were calculated. The heat-stability of the modified carboxyl hydroxypropyl Sesbania Gum was carefully studied. The results indicate that the viscosity heat-stability and heatstability for pyrolysis of modified carboxyl hydroxypopyl Sesbania Gum surpassed those of hydroxypropyl and carboxylhydroxypropyl Sesbania Gum. The results also indicate that the mechanism of thermal decomposition can be described by the model of random initation.

The cooperation of solute and solvent is taker as the gelation condition. The three dimensional percolation of blobs is taken as the gelation model. Phase transition of polyelectrolyte solution is then considered as a process of the formation and the percolation of blobs. By the study of the gelation of different concentration of alginate solutions induced by calcium cation, the nature of sol-gel transition has been suggested. Critical exponent of relative viscosity near the gelation point was determined as κ=0.900.97, A power-law relation was confirmed between the gelation point fc and alginate concentration c. In addition, the correct range of application of the power-law relation of relative viscosity near gelation point, ηrel ∝（fc-f）-k, has also been defined.

Pd clusters encaged in Y-zeolite (Pd0Y) have been prepared by means of exchanging zeolite HY with [Pd(NH3)4]2+ under microwave radiation. The product formed was deaminized by heating, washed sufficiently with de-ionized water and reduced with hydrogen. The crystal phase diffraction of Pd was not found in the XRD spectrogram of Pd0y. According to polycrystal X-ray diffraction data. Radial Electron Distribution Function (REDF) of Pd0Y was calculated to elucidate the structure of Pd cluster. The results show that the Pd clusters are of the Al type closely packed arrangement. The dimension of them is about 12 Å. They are encaged in the supercage of zeolite Y. Their occupancy on the supercage is as small as 0.06 so that the framework structure of zeolite Y is unchanged. Therefore, the high dispersing Pd cluster aggregating in supercage exhibit strong catalytic effect. The CO-conversion of Pd0Y with Pd 0.72% and 6.13% (in mass fraction) is 67 % and 100 % (in volume fraction) respectively. Evaluation conditions:
mixed gas containing 0.02% CO and air,
space velocity 3000 h-1,
reaction temperature 0 ℃.

 The electrochromic characteristics of the NiOxHy thin film DC sputtered from powder Ni(OH)2 target are investigated in LiClO4-PC nonaqueous electrolyte by cyclic voltammetry, volt -transmittance and step potential methods. The spontaneous bleaching process occurs in the zero potential period immediately after the colouring period and corresponds to the Li+ insertion. The colouration process is not spontaneous. XPS spectra are obtained for the bleached and coloured states in Ni2p3/2 and O1s regions. Ni atoms are oxidized in coloured state and reduced in bleached state. The chemical enviroments for O atoms are changed accordingly.

 The sol-gel process has been applied to the preparation of small size CdS crystal doped silica glasses. Silica glasses containing 0.88~30 wt % CdS were synthesized in a process which includes two-step hydrolysis of Si(OC2H5)4 and Cd(CH3COO)2•2H2O,drying and heating of doped gels, and reaction by exposing the porous glass of CdO/SiO2 to H2S gas. The sol-gel transition point was determined by measuring the variation of the viscosity with hydrolysis time. It was found that the gel point was affected by the Cd(CH3COO)2•2H2O content and kinds of acid-catalyst (HNO3 of HCl) . About 2 cm diameter monoliicth dry gel was obtained in the sealed box in which microenvironment (humidity, temperature and chemical atmosphere etc. ) was automatically controlled by the computer. From the results of the low frequency inelastic Raman scattering and transmission electron micrographs, CdS crystals were 1.6 to 8.4 nm in diameter for different doped systems. in the optical absorption spectra, the absorption edge exhibited a blue shift compared with that of the bulk CdS. Thus the quantum size effect was found for glasses containing CdS prepared by the sol-gel process.

 Gram chicken bean exhibits a high level of β-galactosidase activity, and the three components contained in it are responsible for this activity. β－galastosidase Ⅰ, Ⅱ and Ⅲ were separated by ammonium sulphate fractionation (30%-70% saturation) and by ion-exchange chromatography on DEAE-cellulose-32. β－galactosidase Ⅰ and Ⅱ,in particular, were purified by subsequent, chromatography on CM-cellulose-52. Specific activities of them were improved by 19 times and 48 times, meanwhile, recovery activities were 16% and 18% respectively. The two enzymes were homogeneous as judged by polyacrylamide gel electrophoresis and Sephadex G-200 molecular sieve chromatography. Their molecular weights were determined to be 24 000 and 58 000 respectively. β－galactosidase Ⅰhad an apparent KM of 6.0 ×10-3 mol•dm -3 for p-nitrophenyl-β－D-galactoside (PNPG) and 3.3 ×10-2mol•dm-3 for o-nitrophenyl-β－D-galactoside (ONPG). β－galactosidase Ⅱ had an apparent KM of 6.0 × 10-4 mol•dm-3 for PNPG and 1.0 × 10-3 mol•dm- 3 for ONPG. Galactose and lactose both competitively inhibited the activity of enzymes. Raffinose uncompetitively inhibited the activity of enzymes. lons Mg2+, Zn2+ and Ca2+ stimulated the activity. The two enzymes were markedly inhibited by Hg2+, PCMB and NEM, which suggested that tryptophan (-SH) was necessary for enzyme function. 

 A dielectric measurements were carried out over the frequency range 10~107 Hz for the systems comprising strong, weak charged membranes and solution. A distinct double dielectric relaxation was observed under application of d.c. bias voltage. The data on the double relaxation for cation-exchange membrane were analyzed by using a dielectric theory for concentration polarization layer(CPL), the structure parameters of the layer and phase parameters of the two adjoining aqueous phases were obtained from dielectric parameters observed. The cause of dielectric relaxation was discussed in detail. The results of simulation basis of dielectric theory of CPL made in previous study are shown to be reasonable, and a high possibility in respect to the origin of the dielectric relaxation was suggested by the experiments.

HeI photoelectron spectrum of B(OCH3)3 is presented in this paper. The assignment of the spectrum has been also done by an analysis of the intensity of the spectrum bands and the optimized MNDO molecular orbital calculation on B(OCH3)3 molecule. The split showing a 1.08eV of the bands at the lowest two ionization potentials (IPs) was assigned to the Jahn-Teller split of the doubly degenerate oxygen lone-pair orbitals. And the splits showing 0.42eV and 0.38eV on the above-mentioned hands were considered as the result of spin-orbital interaction. Therefore the this PES study provides an exceedingly experimental example to testify the Jahn-Teller effect and the spin-orbital interaction splitting.

The enthalpies of formation of some compounds are not easy to be measured experimentally. This paper reports the calculated values of the heat of formation for some novel moleclar sieves by a method of consistant molecular mechanics force field. The enthalpies of formation of novel type molecular sieves: ZSM-48, ZSM-22, ZSM-23 and ZSM-18, have been calculated.

The surface properties of GCE treated by anodic polarization in strong alkaline solutions are makedly different from that of polished GCE. XPS results show thta more oxygenic groups as carbonyl and acid anhydride are formed on the electrode surface, the ratio of O/C increases, C1s and O1s peaks shift to higher binding energies. Moreover, the adsorptivity of the treated GCE decreases and shows no obvious adsorption for Fe2+ in H2SO4 solution. On the other hand, behaviour of the electrode reaction is also prominently improved. The background current is less, the electron transfer rate is greatly speeded up and the reverse of the electrode reaction for Fe3+/2+, Eu3+/2+ is effectively enhanced for treated GCE.

It was found that the electrochemistry of ctyochrome C was reversible at ld electrode surface modified with glucides and alcohols, and the electrochemical reaction of cytochrome C was related with the coverage of promoters adsorbed on the electrode surface. The influence of the number of hydroxyl group to the promotion effect of glucides and alcohols was also studied.

By using LKB2277 Bioactivity Monitor, we have determined the thermogenesis power curves of four kinds of bacteria: Brucella M5(55010), 83-980, 83-981 and E. coli. We have also derived the thermokinetic equation for the process of bacterial growth, which was untypical "S" , unideal growth, as:
Ln[P•(1-P/Pm)?-1]=ln[P0•(1-P0/Pm)?-1]+kt
From this equation, the rate constants of bacterial growth k wore obtained. This thermokinetic equation is very suitable for cell growth of separated culture, in which the thermogenesis curve is untypical. The model propoted by equationl(1) has been compared with the exponential and logistic models. This thermokinetic equation is very significant for the study of bacterial limited growth and their characteristics.

This paper presents a study of the concentration range of reactant of oscillation reaction in α-hydroxy-propionic acid-KBrO3-MnSO4-H2SO4-propanone system. The special feature of the reaction is a damped oscillation. A section of the damped oscillation wave is similar to a spindle. Effects of many factors on the oscillation have been examined. The period and amplitude as function of the initial concentration of each reactant have been studied. It was found that mumbers, period and amplitude of each section of damped oscillation and preoscillatory time depend on the initial concentrations of the reactants.

Thermal decomposition process of four benzimidazolyl-containing dicopper(Ⅰ) complexes: [Cu2(OCTB)](ClO4)2•1.5H2O(1), [Cu2 (NMOCTB)](ClO4)2•H2O(2), [Cu2(NBUOCTB)](ClO4)2(3), [Cu2(NBOCTB)](ClO4)2•H2O(4) and their kinetics were studied under the non-isothermal conditions by TG-DTG techniques. The non-isothermal kinetic data were analyzed by means of Achar and Coats-Redfern method respectively. The kinetic equation for the second step of the decomposition of complex (1) can be expressed as: dα/dt=A•exp(-E/RT) •(1-α), the mechanism of this reaction corresponds to "Coring and Growth" with n=1; while for the first step of complex (3) decomposition, dα/dt=A•exp(-E/RT)• (1-α)2, which corresponds to the mechanism of "the second-order chemical reaction".