39,110 Result(s)
within
Article
Zheng-**ong **
-
Article
The solution for axisymmetrical shells with abrupt curvature change (corrugated shells) by the finite element method
It has been noted in the present paper that the finite element method using linear elements for solving axisymmetrical shells cannot be applied to the analysis of axisymmetrical shells with abrupt curvature ch...
-
Article
Singular perturbation of first boundary value problem for higher order elliptic equations (II)
In this paper we discuss singular perturbations of first boundary value problem for higher order elliptic equations of two parameter and obtain the asymptotic expression for the formal solution containing two-...
-
Article
Some theorems for determining the definiteness and changeability of sign of functions and the application to the conditional stability of the motion of the axis of a slee** top
This paper gives some theorems for determining the definiteness and changeability of sign of functions as well as the application to the axis of a slee** top. The necessary and sufficient condition of the co...
-
Article
Finite element study of dynamic characteristics of main components of machine tools
Dynamic characteristics have been studied for main components of machine tools by finite element method. The multi-element static and dynamic structural analysis program makes possible the analysis of main com...
-
Article
The **gaze ophiolite (Tibet): a peculiar oceanic lithosphere
The **gaze ophiolite which outcrops along the Yarlung Zangbo river, southern Tibet, locally displays a complete ophiolitic sequence from marine sedimentary cover over basaltic volcanics to the north, to fresh ...
-
Article
The relationship between cation-induced fluorescence and membrane stacking in isolated spinach chloroplasts
In order to study the relationship between Mg++-induced fluorescence and membrane stacking, trypsin was used as a probe. Trypsin treatment diminished to a high degree the light-induced variable fluorescence and m...
-
Article
The application of the finite element method to solving Biot's consolidation equation
Biot's theory of consolidation of saturated soil, regards the consolidation process as a coupling problem between stress of elastic body and flow of fluid existing in pores[1]. It can more precisely reflect the m...
-
Article
Fissionlike exit channel in the 5.8 MeV/u84Kr on24Mg reaction
Fissionlike (FL) phenomena for systems around mass 100 have been shown previously interpretable in terms of dynamical fission. This appears to be dependent on the entrance channel mass asymmetry. We have studi...
-
Article
The Hamilton's principle of nonholonomic variable mass systems
The Hamilton's principle is extended to the most general, nonholonomic variable mass systems. The Hamilton's principle of nonholonomic variable mass systems is obtained and is illustrated with examples.
-
Article
Dynamic analysis of nonlinear systems by modal synthesis techniques
Different kinds of modal synthesis method have been used widely in dynamic analysis of linear structure systems, but, in general, they are not suitable for nonlinear systems.
-
Article
Somaclonal genetics of rice, Oryza sativa L.
The inheritance and variations of some traits of more than 2,000 somatic cell derived plants of rice (Oryza sativa L.) were investigated in the second and third generations (T2 and T3) of regenerated plants (soma...
-
Article
The effects of emission line identification on the redshift distribution of QSO's
We use the QSO's in the catalog compiled by Hewitt and Burbidge (1980) as the sample to analyse for the selection effects in the redshift identification. The results show that the redshift distribution caused ...
-
Article
The asymptotic solution of a kind of Stefan problem
In this paper, a kind of Stefan problem subject to general initial condition is studied. The slab considered is divided into three regions. There is a different time scale in each one. By means of PLK method o...
-
Article
Two simple proofs of Cayley-Hamilton theorem and two representation theorems
In this paper two simple proofs of Cayley-Hamilton theorem are given and by use of Cayley-Hamilton and l'Hopital's two representation theorems concerning tensor functions of an arbitrary second-order tensor ar...
-
Article
A study of long-period sea level changes in the China Sea areas
The paper describes the seasonal and interannual changes in sea level in the China Sea. The six long-period tidal constituents (Sa, Ssa, Mm, Mf, MSf and MN) which are closely related to sea level changes have bee...
-
Article
Grazing-incidence far-infrared gas laser
First realization of a grazing-incidence gas laser is reported. For this purpose an optically pumped 496 μm CH3F laser is equipped with a cavity consisting of a diffraction grating and a resonant mirror. The obse...
-
Article
Extended variational principle in nonlinear theory of elasticity
From the extended energy functional, a unified variational principle and an extended variational principle are given and proved in this paper. It is about the non-conservative, abrupt and divided domains stati...
-
Article
The exponential asymptotic solution of differential equation
In this paper, the exponential asymptotic solution (E.A.S.) of differential equation is discussed. Firstly, E.A.S. of the second-order differential equation is studied and the orthogonal conditions of the unif...
-
Article
Studies on the calcium antagonistic action of tetrandrine: VI. Comparison of effects of tetrandrine, verapamil and propranolol on myocardial blood flow
By86RbCl-extraction method, the effects of tetrandrine (Tet), verapamil (Ver) and propranolol (Pro) on myocardial blood flow of mice were studied. Both I.P. Tet 100 mg/kg and Ver 5 mg/kg increased the blood flow,...
-
Article
Hopf bifurcation phenomenon in catalytic reaction
In this paper, we intend to discuss Hopf bifurcation phenomenon under the effect of the periodic small perturbation on local temperature fluctuations (flikering) phenomenon of catalytic reaction. With the obta...
