According to the project of the Mini-Astrodynamical Space Test of Relativity using Optical Devices,(Mini-ASTROD) the Shapiro time delay in the general relativity is examined using the ground deep-space laser ranging,a scheme that observational values are compared with theoretical ones is given,and the value of the spatial curvature parameter γ is fit out.

Seen form performance evaluation curves of NSA, in low section of low frequency bands, about 30MHz~100MH, the difference between evaluation and theoretical ones is larger than 4 dB while the evaluation agrees with 4dB Rule of the theoretical values in other segments of the lowfrequency bands and it is evident to observe its tendency of being close to acceptable segment with the rise of the frequency.

The observed values of oxygen concentration cell coincided with theoretical ones perfectly, in- dicating that the conduction in the ceramics was purely oxide-ionic with oxygen ion transference number of 1 under oxygen atmosphere over the whole temperature range of 600～1000 ℃.

At room temperature,the experiment result indicates that the sensor system has good sensing linearity,and experimental data fits with theoretical ones fairly in 10mA~(10A) range.

For the first time we got a series of P(I) of NbN/AlN/AbN and Nb/AlO_x/Nb at different temperatures from 4.2K to 30mK and within certain range the results match theoretical ones perfectly.

Applying the theory of solubility parameter,an attempt at choosing desorption solvent theoretically and quantitatively is made,and the experimental result coincides with theoretical ones.

The two-photon absorption cross section of 1s_5-4d"_1 transition in Ne in a discharge tubehas for the first time been determinated experimentally. The experimental resultsare in agreement, with theoretical ones, obtained based on a two-level model.

Our results are in good agreement with other theoretical ones although better agreement can be obtained after the effects of autoionization resonance broadening and relativity have been considered.

Comparison of the obtained results with data of previous investigations shows that the form of the optical excitation functions is in good agreement with the experimental data but differs considerably from the theoretical ones.

The semiempirical correction factors exceed the theoretical ones.

The experimental results of output waveform, transfer function and output signal-to-noise ratio are given and compared with the theoretical ones.

Simulations show that the practical error rates accord with the theoretical ones, so closed-form error rates are accurate references for STBC performance evaluation.

In calculating the strength of V-shaped bottom structure of a planing craft, there occurs a problem of how to calculate the virtual moment of inertia of V-shaped plating.The determination of scantlings of bottom structure largely depends upon the accuracy of the calculated virtual moment of inertia.In the present time, the formulas given by Papkovich, Shimanski and Kurdumov are generally used by naval architects.However, for a given structure, by applying the above three methods, we have obtained quite different...

In calculating the strength of V-shaped bottom structure of a planing craft, there occurs a problem of how to calculate the virtual moment of inertia of V-shaped plating.The determination of scantlings of bottom structure largely depends upon the accuracy of the calculated virtual moment of inertia.In the present time, the formulas given by Papkovich, Shimanski and Kurdumov are generally used by naval architects.However, for a given structure, by applying the above three methods, we have obtained quite different results, and there are also some defects in the assumptions used in each method. A method mostly applied to calculate the strength of materials and the bending theory of beams (including deflections due to shear) have been used by Papkovich to solve the problem of virtual moment of inertia of V-shaped plate.Based on the plane problem of theory of elasticity, Shimanski assumed the plate to he infinite width, and obtained formula for calculating the virtual moment of inertia under two boundary conditions, i.e.the keelson is either simply supported or fixed.By using the theory of beams on an elastic foundation, Kurdumov has taken account of the plane stress condition of the bottom plate and also the case of a keelson having different end fixity only without consideration of the influence of the deformation in bulkheads.An effort has been made by authors in order to make the results more accessible to practical condition.Three V-shaped bottom structure models of different angle of rise, plate width, under different boundary conditions were tested, experimental results are compared with theoretical ones obtained by the authors' method.On the basis of experiments the authors propose a method for calculating the virtual moment of inertia of the V-shaped bottom structure.

This paper consists of three parts. In the first part the 16-dish E-W interferometer of the Mi-Yun Station,Pe- king Observatory(working frequency 146 MHZ)is decribed.Measured instrumental parameters are compared with theoretical ones.Thus the measured beamwidth was 5′.4(5′.3 theoretical),the first sidelobe level amounted to 5%(4.5% theoretical)and the locations of grating lobes in the celestial sphere were very close to the theoretical positions.These show that the surveying of baseline,the...

This paper consists of three parts. In the first part the 16-dish E-W interferometer of the Mi-Yun Station,Pe- king Observatory(working frequency 146 MHZ)is decribed.Measured instrumental parameters are compared with theoretical ones.Thus the measured beamwidth was 5′.4(5′.3 theoretical),the first sidelobe level amounted to 5%(4.5% theoretical)and the locations of grating lobes in the celestial sphere were very close to the theoretical positions.These show that the surveying of baseline,the installation of antennas and the adjustment of transmission lines are reasonably accurate in our case. The observations of the quiet sun and the slowly varying component are described in the second part.In contrast to the results obtained by some authors(e.g.by O'Ob- rien),we found that the apparent diameter of the meter-wave sun had not varied during the descending phase of the solar cycle. In the third part of this paper the results of measurements of type-Ⅰ sources are analyzed.According to the rate of occurence of type-Ⅰ bursts,the sources are classified into four classes.It is found that(1),the average height above photosphere of so- urces of all classes as measured at the central region of the solar disc was 0.24-R_⊙;(2), the E-W distribution of sources was asymmetric with respect to the solar meridian,in agreement with the result of Fokker;(3),the frequency distributions over the solar disc were different for sources of different classes.The sources containing more type- I bursts decreased more rapidly than the continuum sources with respect to the height;(4),the correlation between the commencement of noise storms with the appearance of optical flares seemed to be rather weak.This differed from the result of Mallinge; and(5),the occurence of noise storm sources was closely connected with the mean flare index of the plage region.As shown in fig.10,for all plage regions asso- ciated with large sunspots and strong magnetic fields,the mean flare index had an average value of 14.33(light solid line,fig.10),among these regions for those also containing meterwave sources,this value rose up to 27.15(heavy solid line,fig.10), while for those which did not possess meter-wave sources,the average index was 7.32 (Chain line).

全文分三部分:第一部分描述了北京天文台密云工作站的东-西16面天线干涉仪系统(工作频率146兆赫),并将仪器参数的实测结果与理论予期值相比较.第一旁瓣5%,瓣宽5.4.方向瓣在天球上的位置也都与理论预期相差不大.第二部分描述了宁静太阳及其缓变成分的观测.在太阳活动下降期没有发现米波太阳视直径的变化.第三部分分析了 I 型源的观测结果.米波源的高度我们测定在过日心径时为光球之上0.24R☉.检查不同类型噪暴源按日心径的分布,得出随着高度的增加 I 型源的噪暴成分比起连续的增强辐射下降得要迅速.在与光学现象的对应上,噪暴的起始似乎与耀斑的发生的相关性不强.噪暴源却与谱斑区的平均耀斑指数有密切关系.

Adsorption isotherms of benzene on the zeolite HZSM-5 at high temperatures were determined by gravimetric method and treated with the equation of Wilkins. The results indicate that a derived Wilkins equationcan be applied to the adsorption system of benzene-HZSM-5 under the experimental conditions studied. The experimental isotherms coincide well with theoretical ones obtained from above Wilkins equation. The value of calculated initial isosteric heat of adsorption, q1 is also in good agreement with the...

Adsorption isotherms of benzene on the zeolite HZSM-5 at high temperatures were determined by gravimetric method and treated with the equation of Wilkins. The results indicate that a derived Wilkins equationcan be applied to the adsorption system of benzene-HZSM-5 under the experimental conditions studied. The experimental isotherms coincide well with theoretical ones obtained from above Wilkins equation. The value of calculated initial isosteric heat of adsorption, q1 is also in good agreement with the experimental data.