It has realized a measuring accuracy of 0.46 microseconds (r.m.s) when the satellite rotates at a rate of 100 r/min in the sector meridian plane of the satellite ranging from -29.5° to +29.5°.

In this paper, the vertical uniformly distributed load acting along the middle surface of the Ellipsoid shell is represented by the triangular series of angle θ between the meridian plane and the plane XOZ in any point of shell.

Numerical results present propagation features in meridian plane of CME events triggered at different places of solar surface and numerically testify the effect of propagating CME deflecting to current sheet.

It has realized a measuring accuracy of 0.46 microseconds (r.m.s) when the satellite rotates at a rate of 100 r/min in the sector meridian plane of the satellite ranging from -29.5° to +29.5°.

In this paper, the vertical uniformly distributed load acting along the middle surface of the Ellipsoid shell is represented by the triangular series of angle θ between the meridian plane and the plane XOZ in any point of shell.

Numerical results present propagation features in meridian plane of CME events triggered at different places of solar surface and numerically testify the effect of propagating CME deflecting to current sheet.

A general expansion in Taylor series of space magnetic field (median plane symetry ornonsymetry) expressed in terms of the field in the φ=φ_0 meridian plane, which may beexpressed analytically or by field values at discrete nodes, is derived in cylindrical coordinatesystem.

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) project is one of the five National Major Scientific Projects undertaken by the Chinese Academy of Science. LAMOST is a quasi-meridian reflecting Schmidt telescope laid down on the ground with its optical axis fixed in the meridian plane.

大天区面积多目标光纤光谱天文望远镜(Large Sky Area Multi-Object Fiber Spectroscopy Telescope，简称LAMOST)是由中国科学院建设的国家九五大科学工程之一。

Based on generalized non-linear strength theory proposed by the author and combined with mechanics characteristics of rock materials, a generalized non-linear strength theory for rocks is established. The failure function of the theory is a smooth curve between SMP criterion and Mises criterion in the π plane and is an exponential curve in the meridian plane.

This paper deals with the expressions of the yield criteria for perfect plastic rock-soil in stress space and strain space, and the characteristics of the yield curves on a meridian plane and a π plane.

The approximating Fourier method yields a splitting of the 3D problem into a set of 2D problems on the meridian plane of the given domain.

We develop a method for the reduction of the Dirichlet problem for the Stokes flow function in a simply-connected domain of the meridian plane to the Cauchy singular integral equation.

Dirichlet Problem for the Stokes Flow Function in a Simply-Connected Domain of the Meridian Plane

For an unbounded domain of the meridian plane with bounded smooth boundary that satisfies certain additional conditions, we develop a method for the reduction of the Dirichlet problem for an axisymmetric potential to Fredholm integral equations.

We obtain new integral representations for an axisymmetric potential and the Stokes flow function in an arbitrary simply-connected domain of the meridian plane.

Employing one dimensional flow method which is taken as the foundation for designing the radial flow impeller, this article gives a brief description of a design method for the single-bend radial blade with higher and secondary cylindrical parabola of radial flow impeller as well as the double-bend radial flow impeller of a secondary cylindrical parabola used in modern turbine impeller. The calculation of inlet expanding angle of impeller of gas compressor and a design method for the radial oblique impeller...

Employing one dimensional flow method which is taken as the foundation for designing the radial flow impeller, this article gives a brief description of a design method for the single-bend radial blade with higher and secondary cylindrical parabola of radial flow impeller as well as the double-bend radial flow impeller of a secondary cylindrical parabola used in modern turbine impeller. The calculation of inlet expanding angle of impeller of gas compressor and a design method for the radial oblique impeller of smaller inlet angle are discussed and a method for calcluating the cross-sectional area of the canal between the bend blades and an approximate plot method of the contour of flow passage in the meridian plane of the impeller are also suggested.

In view of the limitation of the traditional meridian circle with which theposition of a heavenly body can not be absolutely dedermined in lower latitude areas, a method is suggested in the present article of absolutely determining the azimuth and equatorial point of the graduated circle of the meridian circle by making the observations in the meridian direction and the direction at an angle of 60 degrees to the meridian plane in lower latitude areas and the equatorial zone. The determination . accuracy...

In view of the limitation of the traditional meridian circle with which theposition of a heavenly body can not be absolutely dedermined in lower latitude areas, a method is suggested in the present article of absolutely determining the azimuth and equatorial point of the graduated circle of the meridian circle by making the observations in the meridian direction and the direction at an angle of 60 degrees to the meridian plane in lower latitude areas and the equatorial zone. The determination . accuracy of this method is estimated and its applicable range is also discussed in this papes.

The radio telescope (PEKG 9395) of Beijing Observatory at 3.2 cm began to practice the absolute calibration and daily relative measurement of solar flux density in 1965. A pyramidal horn used as a standard antenna for measuring gain of the paraboloid antenna used in daily calibration was designed. The size of the horn is 36.1 cm ×29.1 cm ×240 cm. As a standard noise power a hot noise source boiling water was developed. The effect temperature that the hot noise source supply is about 373 K. The rms. error is...

The radio telescope (PEKG 9395) of Beijing Observatory at 3.2 cm began to practice the absolute calibration and daily relative measurement of solar flux density in 1965. A pyramidal horn used as a standard antenna for measuring gain of the paraboloid antenna used in daily calibration was designed. The size of the horn is 36.1 cm ×29.1 cm ×240 cm. As a standard noise power a hot noise source boiling water was developed. The effect temperature that the hot noise source supply is about 373 K. The rms. error is ±0.24 K.The gain of the paraboloid antenna with diameter of 2m used in daily calibration was obtained by the method to measure the solar emission using the horn antenna and paraboloid antenna in turn. The experiment arrangment is shown in Fig, 2. The experiment was carried out repeatedly in 1965, 1968, 1969, and 1978. The results were consistent and are shown in table 1. T.(h), the distribution of the background noise temperature of the paraboloid antenna directing at zenith and meridian plane, were calibrated by the hot noise source and has been taken as "second noise standard" of daily calibration. The results are shown in table 2, and Fig. 3. The total error is about 3.6% (rms)-8% (max).The mean ratio of the solar flux density in a year between PEKG 9395 and TYKW 9400 (Toyokawa Observatory,Nagaya Univ., Toyokawa, Japan) is different from one unity by a factor of 0.02 (shown in table 3 and Fig. 4). After analysing the data it was found that the annual veriation of the ratio of solar flux density between PEKG 9395 and TYKW 9400 are caused by the annual variation of Ts(h), the distribution of the background noise temperature of the paraboloid antenna, and the correct factor of atmospheric attenuation. The annual variation of the ratio was almost removed by means of modifying the background radiation by measuring daily with a gas discharge noise tube and correcting the atmospheric attenuation (shown in Fig. 5 and Pig. 6).The accidental error of daily calibration make a few progress in late years, but it was found that the accidental error raised as the solar activity increase, because more intense active regions that cause the observed value decreasing and more bursts of GRF, PBI type that cause the observed value increasing appeared in max. Years.Through observation for one and half solar cycle, it is proved that our absolute calibration and daily relative calibration have a fine absolute accuracy and a good stability of short and long term. This method may be used in all centimeter band and long millimeter band.