3-D CONSOLIDATION ANALYSIS OF LAYERED SOIL WITH ANISOTROPIC PERMEABILITY USING ANALYTICAL LAYER-ELEMENT METHOD

Starting with governing equations of a saturated soil with anisotropic permeability and based on multiple integral transforms,an analytical layer-element equation is established explicitly in the Laplace-Fourier transformed domain.A global matrix of layered soil can be obtained by assembling a set of analytical layer-elements,which is further solved in the transformed domain by considering boundary conditions.The numerical inversion of Laplace-Fourier transform is employed to acquire the actual solution.Numerical analysis for 3-D consolidation with anisotropic permeability of a layered soil system is presented,and the influence of anisotropy of permeability on the consolidation behavior is discussed.     

On the inverse scattering problem and the low regularity solutions for the Dullin–Gottwald–Holm equation

We present an algorithm for the inverse scattering problem associated to the Dullin–Gottwald–Holm equation, arising in the study of the unidirectional propagation of waves in shallow water. In addition, a sufficient condition which guarantees the existence of the low regularity solutions for the generalized Dullin–Gottwald–Holm equation is studied by the method of energy estimation.     

MADCE中解决资源占用冲突的协调策略

提出了一个基于系统局部知识来管理系统资源的协调策略,它可有效管理可重用资源和消耗性资源,并较好地解决了这两类资源分配时的冲突问题．     

温度对Hβ分子筛催化剂结炭影响的13C CP/MAS NMR研究

对Hβ分子筛催化苯胺烷基化反应中结炭随反应温度变化的TG DTA和¹³CCP/MASNMR研究表明,结炭的主要组成为缩聚芳烃化合物及少量烯烃.随反应温度的升高,结炭量增大,脂肪烃含量减少,芳烃含量增加.当反应温度达到500℃时,焦炭的主要组成为稠环芳烃.     

Effect of oxygen deficiency on response of CR-39 on board scientific balloons

We should be careful about the effect of oxygen deficiency on polymeric track detectors even at balloon altitude. Results of balloon experiments and calibration experiments in a vacuum chamber at different pressures show that the effect of oxygen deficiency becomes serious at a pressure below 10 hPa.     

Novel synthetic method of phosphonamidate peptides and its application in peptide sequencing via multistage mass spectrometry

Phosphonamidate peptides were prepared in good yields by reaction of ethoxy(phenyl)phosphinate with free peptides in a mixed solution of H2O, C2H5OH, Et3N and CCl4 at room temp.; their in situ electrospray ionization mass spectra exhibited high sensitivity compared with the free peptides, and sequential loss of amino acid residues of the sodiated phosphonamidate peptides from the C-terminus was found in multistage ESI mass spectrometry. The results show that N-phosphonyl derivatization combined with multistage ESI-MS is a powerful method for peptide sequencing.     

Alleviation of thermally induced phase mismatch in CsLiB6O10 crystal by means of temperature-profile compensation

A new mechanism was found to alleviate the thermally induced phase mismatch of nonlinear optical crystals. By cooling CsLiB>(6)O(10) at an elevated crystal temperature with gas, we improved laser conversion efficiency from green (532 nm) to UV (266 nm) 2.3 times compared with that without cooling. In situ observation of the temperature profile on the output surface revealed that such cooling initiates a negative temperature profile that compensates for the positive profile generated from laser absorption. A 10.6-W UV output with excellent stability was generated. The optimum crystal length was substantially extended.     

Asymptotic behavior of multiperiodic functionsG(x) = \prod\limits_{n = 1}^\infty {g(x/2^n )}

Let 0≤g be a dyadic Hölder continuous function with period 1 and g(0)=1, and let $G(x) = \prod\nolimits_{n = 0}^\infty {g(x/{\text{2}}^n )} $ . In this article we investigate the asymptotic behavior of $\smallint _0^{\rm T} \left| {G(x)} \right|^q dx$ and $\frac{1}{n}\sum\nolimits_{k = 0}^n {\log g(2^k x)} $ using the dynamical system techniques: the pressure function and the variational principle. An algorithm to calculate the pressure is presented. The results are applied to study the regulatiry of wavelets and Bernoulli convolutions.