The basin shape,spatial distribution of water system,density of drainage network,bifurcation(ratio),bend coefficient of river,etc were analyzed quantitatively by GIS based on vector 1:50,000 water system map of Hailan river basin.

Characteristics of water system such as drainage basin shape,spatial distribution of water system,density of drainage network,bifurcation ratio,bend coefficient of river etc.

Results \ Significant correlations were found between body weight,bone mass of the whole body or femur and bend coefficient,elastic transverse distance or ultimate transverse distance of the femur ( r=0 552 to 0 826,P<0 001 ).

In the Design Code of Reinforced Concrete Structures adopted in this country, the longitudinal bending coefficients in slender members under axial load are determined by empirical formulae obtained from tests. In this paper, the author proposes two simple approximate formulae based upon theoretical analysis and experimental data. For slender members which are eccentrically loaded, the effect of longitudinal bending is usually taken into consideration by introducing an eccentricity magnification factor...

In the Design Code of Reinforced Concrete Structures adopted in this country, the longitudinal bending coefficients in slender members under axial load are determined by empirical formulae obtained from tests. In this paper, the author proposes two simple approximate formulae based upon theoretical analysis and experimental data. For slender members which are eccentrically loaded, the effect of longitudinal bending is usually taken into consideration by introducing an eccentricity magnification factor derived from the theoretical elastic deflection formula, both in the Chinese code and in the USSR Code; but in the calculation of critical loads, some empirical coefficients are introduced. In this paper, the deflection at ultimate load (f_D) is used directly, and two projects for calculation of the value of fp are proposed. By comparing the computed values with the experimental results obtained on about 170 columns, it is shown that the proposed method is more accurate than that used in the current Codes, and is also more advantageous in some other respects.

By virtue of the sectionalized calculation method the calculation range of bending coefficient can be extended to 0. 02～0. 16 wide . Furthermore in the paper ,the deflection calculation is reciprocal under load or zero load ,so this will offer convenience to cable-way designing. By the aid of dimension-less calculation techniques the simulation test is done and the formulae in the paper are checked.

It is a serious problem of the functional deformation and fracture of the denture base made of poly-methylmethacrylates in prosthetic clinic.Efforts have been concentrated on ways of strengthening the base.Being a further study,this research undertaken was aimed at elucidating the relationships of the bending strength of the base compounded plastics with steel framework and the hardness,the width and the strength-en area of steel framework within the plastics with the standard mechanical measurement method.It...

It is a serious problem of the functional deformation and fracture of the denture base made of poly-methylmethacrylates in prosthetic clinic.Efforts have been concentrated on ways of strengthening the base.Being a further study,this research undertaken was aimed at elucidating the relationships of the bending strength of the base compounded plastics with steel framework and the hardness,the width and the strength-en area of steel framework within the plastics with the standard mechanical measurement method.It was found that the bending strength of the base made of polymethylmethacrylates was much lower,but the strength of it was improved as a steel framework added to,and that the strength of the compound was signifi-cantly increased as the increment of the hardness,the width of the steel framework in the plastics and the dis-tance of the framework to the tissue surface of the base,and that the bending coefficient of elasticity of the compound was raised with the increasing of the hardness of steel framework in the plastics.The results indi-cate that to reduce the deformation and to prevent the fracture of the complete denture and removable partial denture made of polymethylmethacrylates,the following points may be required (1) selecting the harder steel material for strengthener,(2)increasing the width of the strengthener properly and(3) putting the strength-ener at the area which near to the polished surface of denture base.