As the science developed rapidly , libraries of colleges and universities commonly use computer and IT( Information technology ) , which has made considerable progress on the change from traditional management to modern management .

Soil microbial data were analyzed by computer and it was found that the median effect concentrations (EC50) of REEs were 7.7～10.9, 42.3～74.3, 12.1～78.4 and 30.4～91.2 mg·kg-1 for bacteria decomposing cellulose, ammonifying bacteria, nitrifying bacteria, and nitrogen fixation bacteria, respectively.

The PCI is a high-powered local bus of computer, and it can transfer data in 132MB/s, so it is very fits for high-speed peripheral equipment, such as graph, image, 3D animation and network.

The application about computer and it's network in vehicle information management system are discussed. Based on Oracle Database Systems and Power Builder, the system designing, functions and main technical problems are explained and analyzed in detail, and the character and realization about the vehicle management information system are also introduced.

Some 65 sets of data for tests atR ? 0 were analysed by computer and it is shown that the approach is valid to growth rates up to about 10-4 in./cycle, i.e.

Some 65 sets of data for tests at R ? 0 were analysed by computer and it is shown that the approach is valid to growth rates up to about 10-4 in./cycle, i.e.

The PACS LAN is connected to the hospital information system through the main-frame computer and it is linked, not only to the radiology department, but also to the outpatient clinics.

The study has been carried out by simulation on a computer and it uses a commonly accepted peak model: an exponentially modified Gaussian.

The simulation results are stored in the computer and it is possible to use the time cursor and go back with the time.

In this paper, on the basis of Ref. [1], stresses, deformations, stability and natural frequencies are calculated and analysed for orthotropic laminated, sandwiched and stiffened rectangular shallow shells. The following formulas are obtained in which generalized displacements u0, v0, rx, ry and w are used: (1) formulas for calculating critical loads under the action of membrane forces Nx, Ny and Nxy, (2) formulas for calculating stresses and deformations under the action of external loads mx, my, qx, qy and...

In this paper, on the basis of Ref. [1], stresses, deformations, stability and natural frequencies are calculated and analysed for orthotropic laminated, sandwiched and stiffened rectangular shallow shells. The following formulas are obtained in which generalized displacements u0, v0, rx, ry and w are used: (1) formulas for calculating critical loads under the action of membrane forces Nx, Ny and Nxy, (2) formulas for calculating stresses and deformations under the action of external loads mx, my, qx, qy and qz, (3) formulas for calculating natural frequencies under the influence of initial membrane forces and inertias p, Q and I. These formulas involve only algebraic operations and can be readily evaluated by means of electronic computers and it is also possible to obtain optimum design by changing the parameters. Finally, it should be pointed out that the formulas are valid both for large or small shear rigidities.

Based on that sand removal is caused by inertia of castings an approach to improve the efficiency in electro-hydaulic fettling has been put forword. Electrode parameter, the interval between electrode and castings as well as how to prevent them from plastic deformation or damage have been analysed and relevant formula derived is proved,All mentioned ealeulations conducted by a computer and it is convenient to provide the optimum parameters in the given castings fettling for choice.

The k- ε two- equations turbulence model is used to close the time-averaged governing equations for the flow field. The finite difference equations in th& calculated region have been derived with the volume control method. A new approximation of the sub-laminar layer is adopted for the wall boundaries to give a higher calculating accuracy and a simplified programme. A programme using Gauss-Seidel iteration has been developed to be run on a PDP-11/70 computer and it is shown that it is convergent. An experiment...

The k- ε two- equations turbulence model is used to close the time-averaged governing equations for the flow field. The finite difference equations in th& calculated region have been derived with the volume control method. A new approximation of the sub-laminar layer is adopted for the wall boundaries to give a higher calculating accuracy and a simplified programme. A programme using Gauss-Seidel iteration has been developed to be run on a PDP-11/70 computer and it is shown that it is convergent. An experiment has been performed in a test wind tunnel to check whether the prediction is correct. The velocity field is measured with a hot-wiremeter, but in the recirculating region of the flow field it is measured with a pitometer with a probe of flow direction. The temperature distribution is measured with fine copper-constantan thermo-couples. The experimental results agree fairly well with those by the numerical prediction.