The main purpose of our paper is to understand the structure of conformally compact manifolds by studying the space of L² harmonic 1-forms on it. First following the Wang’s method and using the condition for curvature and the first eigenvalue, we know that either there does not exist any nontrivial L² harmonic 1-form or some differential equations hold on these conformally compact manifolds. By solving these equations, we can prove that the given manifolds can be written as the product of a Euclidean space and a totally geodesic submanifolds whose curvature has lower bound, and the metrics of the manifolds can be expressed explicitly. For the generalized complete manifolds, if we restrict the growth of the L² harmonic 1-forms on them, the similar theorem holds, too.

Two approaches, the momentum-exchange method and the stress-integration method, for force evaluation based on the Lattice Boltzm ann equation were investigated. The momentum-exchange method is relatively reliable, accurate, and easy to implement for both two-dimensional and three-dimensional flows. The flow around a cylinder was simulated, and the drag coefficient of the cylinder was evaluated by the momentum-exchange method. The drag coefficient of a concave surface was also evaluated and compared with the theoretical drag coefficient of a plane. The numerical results are valid, and the drag coefficient of the concave surface is close to that of the plan with the increase of Re number.

It is proved that there are some Hypercyclic and Supercyclic operators in the class of co-analytic Toeplitz operators in Hardy space and Bergman space. Applying spectrum and index theorys, we also prove that Toeplitz operator T_φ belongs to H_c(H) or S_c(H) when the symbol φ satisfies certain conditions.

First, we constructed a periodic multiresolution analys is about the parallel hexagon. Then, using the discrete Fourier transform over 3-direction partition domains, we constructed a kind of bivariate periodic non -tensor-product orthogonal wavelets defined on parallel hexagons. There are only 4 terms in the corresponding refinement equations of the orthogonal scaling functions and the wavelets (and so do the decomposition andreconstruction algorithms). The method presented here is general which is simple for implementation.

By means of the theory of singularly perturbation, Robin problems of a class of strongly nonlinear equations are considered. T he infection of the boundary condition on the asymptotic behavior of the solution of the problem is studied. Under suitable conditions and according to the different regions of the boundary values, the asymptotic expansions of the solution are obtained simply and conveniently. This paper provides a valid method to obta in asymptotic solution for a class of nonlinear problems.

In this paper is proposed a new method for mining quantitative association rules by means of principal component analysis. In contrast to traditional Boolean data matrix, our algorithm is based on quantitative datab ase, which contains some value knowledge for us. The experiment illustrated that the algorithm also works well on canal binary data matrices. Based on the idea of principal component analysis (PCA) discovering the principal component as quantitative association, the ratio item set is definited as well. In additional, it is shown that for the treatment of the complexity of time and space the method is more effective than traditional methods.

In this paper a new forecasting method, the dynamic exponential smoothing algorithm is implemented, which is derived form the exponential smoothing algorithm. The parameters in the new method can be regulated dynamically, which will make the method more effective in the NWS system. This new for ecasting method is different from the existing exponential smoothing algorithm, which can also regulate parameters, and it may be useful in the time series of NWS and other time series with the same statisticcharacteristics. Compared with the existing method in NWS, this method is better in terms of time complexity, s pace complexity and forecasting accuracy.

Based on wavelet and neural network the method of face illumination compensation is proposed. It sufficiently combines multiresolution analysis of wavelet with the self adaptation learning and ability of good spread of BP neural network, thus this method carries out the face illumination compensation. The theory and experiments prove that this method solves face detection and illumination compensation in the identifying process. Moreover, it has fine robust and adaptable characteristics in a wide range.

The fairness of the band allocation is analyzed for each tiny stream in several aggregate streams in DiffServ system agreement, i.e., several typical control algorithms serving fairness (RED, WRR, FQ) are chiefly analyzed, including these algorithms’ ideas, realization methods, techniques and their own defects, and a new algorithm serving fairness is brought forward, based on combining the WRR algorithm with the FQ algorithm. The new algorithm better solves the problem of the fairness of each tiny stream in an aggregate stream when the network is congested. Its purpose is to realize the QoS guarantees in the IP wide area network, even the whole Internet. It gives some guidance for reasonably allocating the band resource in the network.

By using the algorithm that can dynamically select computation cost and running a benchmark program with moderate computation cost in different grid nodes, the obtained MFLOPS value of CPU can be used as a parameter to compare different CPUs’ computational ability directly so that users can make choices among various computing resources by means of it. Our experiments have proved that this method can reflect a CPUs’ computational ability stably and sensitively and that using it to compare CPUs’ computational ability is proper and efficient.

This paper presents an iris recognition method based on 2-D wavelet transform. After pre-process of iris images, 2-D wavelet transfo rm is combined with integral image in order to realize the feature extraction of iris texture. The algorithm was effectually examined by practice.

The carbon nitride films deposited by RF magnetron sputtering in a pure N₂ discharge were annealed in vacuum up to 900 ℃. The chemical bonding of the films was studied using X-ray photoelectron spectros copy and Raman spectra. It was found that the nitrogen atoms were bound to sp, sp² and sp³ hybridized carbon atoms in as-deposited films. The effects of the thermal annealing on the bonding structure and the electron field emission characteristics of CN_x films were investigated.

We analyzed the measurement method of Si-based organic single-films using a model WVASE32 ellipsometer and measured the films of polymethyl methacrylate（PMMA） and fluoro-polyester material. According to the results, we designed the arrayed waveguide grating （AWG） devices. Refractive index can be exactly measured between 124 nm and 1 700 nm, and mean square error(MSE) is far less than 1. Such result suggested that the measurement is very precise. At the same time we discussed the measurements of multilayer organic films and polymer fluoride films.

Microarc oxidation (MAO) coatings on titanium alloy were prepared in an aqueous solution of Na₂CO₃ and Na₂SiO₃ at a high voltage with special asymmetrical AC output, and the effects of treatment parameters such as cathodic and anodic peek voltages as well as treatment time etc. on the phase component of the coatings were studied by means of XRD. The experimental results show that the films consist of dominant rutile as well as a little anatase phase and Ti₆O₁₁ (TiO_1.83) phase, and their contents are closely relative to treatment time and the peak values of anodic and cathodic voltages. When the anodic and cathodic voltages were kept at 320 V and 45 V for 30 min, respectively, the rutile content of the film is the highest and its content exceeds 80%.

A small angle X-ray scattering (SAXS) technique was used to characterize the interfaces between the δ′ phase and matrix in 2091 Al-Li alloy aged at 150 ℃ for different times. The results show that a interfacial layer exists between the δ′ phase and matrix at aged earlier stage, which disappears at aged later stage.

NiTi thin films were deposited on different substrates at room temperature and 573 K, respectively by means of D.C. magnetron sputtering. X-ray diffraction, small-angle X-ray scattering and differential scanning calorimetery were used to study the crystalline characteristics and the crystall ization temperature of NiTi thin films and the crystallinity of the NiTi thin film annealed at 763 K for 1 h.

The tunable fiber laser was fabricated with fiber gratings as the tunable set. The device of adjusting fiber gratings is simple and sta ble. The laser wavelength with the bandwidth less than 0.1 nm is continuously tuned within 17 nm, and the output power is more than 1 mW.

An on-line and sensitive artificial neural network (ANN) analysis combined with flow injection-chemiluminescence (FI-CL) was dev eloped to determine the trace amounts of Au and Pt simultaneously， without the boring process of separating them. Luminol-H_２Ｏ₂ was used as the luminescent reagent. After separation of the most metal ions by cationic exchange resin on-line， EDTA was used as the mask to dispel the effect of residual interference elements. The positions of the catalyzing peak of the luminescence kinetic curve of Au and Pt are different， which is the basis of the simultaneous determination by ANN. The detection limits of Au and Pt were 1.5810^-6　 mmol/L and 2.00×10 ^-3　 mmol/L， respectively， and the relative standard deviation (RSD) were 1.25% and 1.59%. The relative error (RE) of detecting mixed samples is less than 20%.

A new sodium alizarinsulfonate modified active carbon paste electrode was development for Cu(Ⅱ) determination by means of anodic stripping voltammetry. The effects of some experimental parameters were studied, such as the best ratio of carbon paste, pH of supporting electrolyte, scan rate, preconcentration potential, preconcentration time and so on. The determination of Cu(Ⅱ) in the concentration range of 1×10^-8～3×10^-3 mol/L exhibited four linear responses. The detection limit was estimated to be 5.6×10^-9 mol/L(S/N=3). Many coexisting ions had little or no effect in the analys is procedure. The new electrode offers many advantageous properties such as high stability and analytical sensitivity.

Cr-Mo miscellaneous polyanion and dimethyl sulfoxide solvent compound with B type Anderson structure were synthesized in aqueous solution. The molecular expression is (NH₄)_３Ｈ_３(CrMo₆O₂₄H₆)₂(C₂H₆SO)₆. The single crystal was analyz ed by X-ray and the results of experiment show that the compound is a triclinic crystal system with P1 space group. The chief crystal cell parameters tested by TG means are a=1.428 9(3) nm, b=1.429 5(3) nm, c =1.626 3(3) nm, α=63.93(3)°, β=90.00(3)°, γ=60.05(3)°, R=0.039 8. The curves show that the compound weight lost underwent three procedures. At last the compound was decomposed at 494.41 ℃.

A novel blue light emitting boron complex PPBF₂(PP: 2-(2-hydroxyphenyl)-pyridine) was synthesized and used for the fabrication of organic light-emitting devices (OLEDs). PPBF₂ shows a strong photoluminescence at 440 nm in solution or solid state. The OLEDs with PPBF₂ as emitting material show different colors, which is dependent on different device structures.

We used the density functional theory at UB3LYP/6-31G(d) level, to study the process of bromine substituting for hydrogen on the benze ne ring. From the results of the calculations, it is a multistep reaction including a transition state and two intermediate states. A positive charge of Br⁺ transfers to H by means of intermediate ［C₆H₆Br］⁺. In fact, it is a process of electron transfer.

CaSiO₃∶Eu^３＋ phosphor powder was prepared by the ceramics method. The optimal synthetic conditions are that sintering temperature is 1　200　℃, sintering time is 3　h, the concentration of t he fluxing agent is 3％, molar matching of the activating agent is 2%.The fluorescence spectrum of the phosphor powder was measured. The results indicate that the emission spectrum exhibits a sharper and more effective peak at 609 nm corresponding to the ⁵ D₀→⁷F₂ transition of Eu^３＋.

Extraction of Quercetin from Rhizoma Alpiniae Officinarum via ultrasonic nebulization technique (UNE) was studied. The qucercetin was determined by means of capillary electrophoresis. Compared with ultrasonic extraction (UE), the amount of extraction solvent and extraction time can be reduced when the UNE was applied.

Tegafur ［1-(tetrahydro-2-furanyl)-5-fluorouracil］(TF), a masked form of 5-fluorouracil (5-FU), is an effective antitumor agent. Oral administration of TF plus uracil (U) (1∶4 mole/mole) (UFT) is more effective than that of TF alone. The relative bioavailability of UFT was studied in beagle dogs. A single oral administration of UFT test capsules or reference capsules containing 100 mg TF and 224 mg U was given to each dog according to a random crossover design. The drug concentrations in plasma were determined by high performance liquid chromatography (HPLC). The relative bioavailabilities of TF and 5-FU were (106.89±21.74)% and (102.32±24.02)%, respectively. The pharmacokinetic parameters, including C_max, AUC_0~t and AUC_0~∞, show no significant difference (P>0.05). Statistical results show that the two preparations are bioequivalent (P>0.05).

The anti-mutagenic effects of polysaccharides from Ganoderma tsugae were studied by mice bone marrow cell micronuclei test, mice testicular chromosome aberration test and Ames test. The micronuclei frequency induced by cyclophosphamide in mouse bone marrow cells was inhibited significantly, but mouse testicular chromosome aberration frequency induced by mitomycinc was not inhibited markedly by polysaccharides from Ganoderma tsugae. The Ames test showed that polysaccharides from Ganoderma tsugae have effectively anti-mutageni activties.

Murine splenocyte was harvested after the mouse was stimulated by PMA, the cells were extracted for total RNA and RT-PCR, and IL-15 eukaryotic express plasmid was then constructed. COS-7 cell line was transfected by this plasmid, supernatant and the cells were harvested. The supernatant was serially by diluted to detect the bioactivity and express level by western blot. This recombinant murine IL-15 eukaryotic plasmid can increase immune response as DNA vaccine adjuvant potentially.

Titanium dioxide nanoparticles were prepared from the cheap inorganic salt by the sol-gel method and used in the photocatalytic degradation of acetic acid in the aqueous solution. The experiment results show that the amount and heat-treated temperature of TiO₂， the pH value and concentration of solution consid erably affect the process of the degradation. The influence of the coexistent in organic ions on the photodegration of acetic acid was investigated.

The photocatalytic oxidation of toluene over TiO₂/SiO₂ in the gas-phase was investigated. The feasibility studies involved the effects of initial concentration of reactant, oxygen content, water vapor content and light intensity on the photocatalytic reaction. The photocatalytic degradation rate increased with increasing the initial concentration of toluene, butmaintained almost a constant beyond a certain concentration of it. It matched well with the Langmuir-Hinshelwood kinetic model. The reaction rate increased with increasing oxygen content, but the oxygen content was higher than 18%(volume percentage), the reaction rate was restrained. For the influence of water vapor in the gas-phase on the photocatalytic degradation rate of toluene, there was an optimum concentration of water vapor (0.2%). The photocatalytic degradation rate increased with light intensity but the rate leveled off to a constant when the light intensity rose to 3 mW/cm². The photocatalytic degradation rate constant and the adsorption constant of toluene were obtained by means of the Langmuir-Hinshelwood model, and the reaction products were also identified by FI-RT and GC-MS.