Ⅰ. INTRODUCTION Aerosol, an important atmospheric component, exists in the whole atmosphere. The vertical sounding of atmospheric aerosol from the troposphere to the stratosphere
Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operat...Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operating conditions on holdup and characteristic velocity were studied.By using the methodof dimensional analysis,the authors obtained two experimental correlations for estimating holdup and characteristic velocity respectively.Drop size distribution was studied photographically.The experimental results showedthat drop size distribuiion could be described by upper-limit log-normal distribution.展开更多
This paper presents an experimental study on the axial and radial distributions of heat transfer coefficients in a fastfluidized bed operated at ambient temperature.The following formula is recommended to correlate th...This paper presents an experimental study on the axial and radial distributions of heat transfer coefficients in a fastfluidized bed operated at ambient temperature.The following formula is recommended to correlate the local heat transfer coefficients in fast fluidized beds:where a,n<sub>1</sub> and n<sub>2</sub> are functions of radial positions.展开更多
Recently, the experimental technique of fast reaction, mainly measuring chemical relaxation, has been widely applied in biochemistry. Eigen had contributed a phenomenological dynamics theory to this technique. However...Recently, the experimental technique of fast reaction, mainly measuring chemical relaxation, has been widely applied in biochemistry. Eigen had contributed a phenomenological dynamics theory to this technique. However, the relaxation dynamics, produced by virtue of a sudden change of some external condition, for hemoglobin (or allosteric enzyme) is completely short of such a study of statistical mechanics foundation. At present it is still a very difficult problem to study completely展开更多
It is well known that main viscera generally receive dual innervation from sympathetic and parasympathetic nerves and their roles modulating activities of viscora show antagonism in physiological nature, but there is ...It is well known that main viscera generally receive dual innervation from sympathetic and parasympathetic nerves and their roles modulating activities of viscora show antagonism in physiological nature, but there is little information about where展开更多
Ferric concretions have been discovered in the surface sediments from the southern part of the Huanghai Sea to the northern part of the East China Sea in June, 1981. Their morphology can be classified into three kinds...Ferric concretions have been discovered in the surface sediments from the southern part of the Huanghai Sea to the northern part of the East China Sea in June, 1981. Their morphology can be classified into three kinds: gelatins, se-展开更多
Ⅰ.INTRODUCTION At the Chinese Symposium on Seismology held in August, 1981, the author et al.presented an article entitled 'On the Correlations Between the Geonomical, Meteorological and Astronomical Phenomena...Ⅰ.INTRODUCTION At the Chinese Symposium on Seismology held in August, 1981, the author et al.presented an article entitled 'On the Correlations Between the Geonomical, Meteorological and Astronomical Phenomena' in which it is suggested that in the time series of more than 20 geonomical quantities (including seismic activities) and astronomical data of the solar system there exists a 60-yr quasiperiod.展开更多
This is a brief report aimed at determining the longitudinal variation of the warmest sea surface temperature (SST) area during the past 11 E1 Ni(?)o events since 1932. The SST data are from the Comprehensive Ocean-At...This is a brief report aimed at determining the longitudinal variation of the warmest sea surface temperature (SST) area during the past 11 E1 Ni(?)o events since 1932. The SST data are from the Comprehensive Ocean-Atmospheric Data Set (CoADS) established by the United States.展开更多
Beginning next month, 14 excellent historic sites in the Hongkou District will bear “anti-theft name boards”on their outside walls, district officials announced yesterday.
The global reaction rates for industrial high-temperature shift reaction catalyst WB-2, cylindrically shaped and measuring φ9×7mm, have been investigated in an internal-recycle gradientless reactor at pressures ...The global reaction rates for industrial high-temperature shift reaction catalyst WB-2, cylindrically shaped and measuring φ9×7mm, have been investigated in an internal-recycle gradientless reactor at pressures of 7×10~5 and 13×10~5 Pa (gauge). The pore-size distribution and the tortuosity factor have also been measured.in this part of the paper, by using the intrinsic kinetic equation obtained at atmospheric pressure for conditions under pressure, the numerical solutions of the effectiveness factors for 17 groups of experimental data of the global rates have been computed according to the simplified multieomponent diffusion model presented in the second part of the paper, and the results compared satisfactorily with experimentally observed values. It is therefore proposed that experiments for globdl rates under pressure would not be necessary for investigating the kinetic behavior under pressure for reactions for which the operating pressures are not too high such as the case for high-temperature shift rcaction.展开更多
α-LiIO8 crystals are non-linear optical materials with very good optical homogeneity, and have been widely used in the second hamonic generation （SHG） devices.If a DC field is applied along the c-axis of the crysta...α-LiIO8 crystals are non-linear optical materials with very good optical homogeneity, and have been widely used in the second hamonic generation （SHG） devices.If a DC field is applied along the c-axis of the crystal, the light beam passing through it will be diffracted, and the diffraction patterns, such as direct line or arc bands, starshaped streaks and spots vary with the directions of the incident light. The dif-展开更多
Interaction between two phases exists whether in reversed phase thin-layer chromatography or normal phase thin-layer chromatography. But the strength of interaction between the two phases is different when chromatogra...Interaction between two phases exists whether in reversed phase thin-layer chromatography or normal phase thin-layer chromatography. But the strength of interaction between the two phases is different when chromatographic systems are changed. When the strength of interaction between the two phases is too small to展开更多
Low-voltage Electrical Apparatus (LVEA) which is a keylink for transmitting electrical power to users,is connectedbetween transformer and load mainly to be used for distribution,pro-tection,controlling of electrical c...Low-voltage Electrical Apparatus (LVEA) which is a keylink for transmitting electrical power to users,is connectedbetween transformer and load mainly to be used for distribution,pro-tection,controlling of electrical circuits and also for starting,adjusting,stopping and indicating of load.The low-voltage electrical products include展开更多
01001 Two--coordinates Measuring Machine withLaser Interferometer. Yang Ziben:1 (2), 1980. pp.81--92.A precision instrument called two -- coordinatesmeasuring machine has been developed. which is basedon determining l...01001 Two--coordinates Measuring Machine withLaser Interferometer. Yang Ziben:1 (2), 1980. pp.81--92.A precision instrument called two -- coordinatesmeasuring machine has been developed. which is basedon determining length by means of laser interferencetechnique. In this article. the main construction of themachine and the four interference systems including展开更多
The spherical harmonic analysis of geomagnetic field gives a convenient mathematical form for its global distribution and, by means of observations made on the earth’s surface makes analytid continuations upwards to ...The spherical harmonic analysis of geomagnetic field gives a convenient mathematical form for its global distribution and, by means of observations made on the earth’s surface makes analytid continuations upwards to the entire free space and downwards into the earth. It makes possible the discrimination between the internal and external sources of the field, and attributes physical significance to each term of the harmonic series.展开更多
文摘Ⅰ. INTRODUCTION Aerosol, an important atmospheric component, exists in the whole atmosphere. The vertical sounding of atmospheric aerosol from the troposphere to the stratosphere
文摘Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operating conditions on holdup and characteristic velocity were studied.By using the methodof dimensional analysis,the authors obtained two experimental correlations for estimating holdup and characteristic velocity respectively.Drop size distribution was studied photographically.The experimental results showedthat drop size distribuiion could be described by upper-limit log-normal distribution.
文摘This paper presents an experimental study on the axial and radial distributions of heat transfer coefficients in a fastfluidized bed operated at ambient temperature.The following formula is recommended to correlate the local heat transfer coefficients in fast fluidized beds:where a,n<sub>1</sub> and n<sub>2</sub> are functions of radial positions.
文摘Recently, the experimental technique of fast reaction, mainly measuring chemical relaxation, has been widely applied in biochemistry. Eigen had contributed a phenomenological dynamics theory to this technique. However, the relaxation dynamics, produced by virtue of a sudden change of some external condition, for hemoglobin (or allosteric enzyme) is completely short of such a study of statistical mechanics foundation. At present it is still a very difficult problem to study completely
基金Project supported by the Science Fund of Academia Sinica
文摘It is well known that main viscera generally receive dual innervation from sympathetic and parasympathetic nerves and their roles modulating activities of viscora show antagonism in physiological nature, but there is little information about where
文摘Ferric concretions have been discovered in the surface sediments from the southern part of the Huanghai Sea to the northern part of the East China Sea in June, 1981. Their morphology can be classified into three kinds: gelatins, se-
文摘Ⅰ.INTRODUCTION At the Chinese Symposium on Seismology held in August, 1981, the author et al.presented an article entitled 'On the Correlations Between the Geonomical, Meteorological and Astronomical Phenomena' in which it is suggested that in the time series of more than 20 geonomical quantities (including seismic activities) and astronomical data of the solar system there exists a 60-yr quasiperiod.
文摘This is a brief report aimed at determining the longitudinal variation of the warmest sea surface temperature (SST) area during the past 11 E1 Ni(?)o events since 1932. The SST data are from the Comprehensive Ocean-Atmospheric Data Set (CoADS) established by the United States.
文摘Beginning next month, 14 excellent historic sites in the Hongkou District will bear “anti-theft name boards”on their outside walls, district officials announced yesterday.
基金Project supported by the Science Fund of the Ministy of Chemical Industey of China
文摘The global reaction rates for industrial high-temperature shift reaction catalyst WB-2, cylindrically shaped and measuring φ9×7mm, have been investigated in an internal-recycle gradientless reactor at pressures of 7×10~5 and 13×10~5 Pa (gauge). The pore-size distribution and the tortuosity factor have also been measured.in this part of the paper, by using the intrinsic kinetic equation obtained at atmospheric pressure for conditions under pressure, the numerical solutions of the effectiveness factors for 17 groups of experimental data of the global rates have been computed according to the simplified multieomponent diffusion model presented in the second part of the paper, and the results compared satisfactorily with experimentally observed values. It is therefore proposed that experiments for globdl rates under pressure would not be necessary for investigating the kinetic behavior under pressure for reactions for which the operating pressures are not too high such as the case for high-temperature shift rcaction.
文摘α-LiIO8 crystals are non-linear optical materials with very good optical homogeneity, and have been widely used in the second hamonic generation （SHG） devices.If a DC field is applied along the c-axis of the crystal, the light beam passing through it will be diffracted, and the diffraction patterns, such as direct line or arc bands, starshaped streaks and spots vary with the directions of the incident light. The dif-
文摘Interaction between two phases exists whether in reversed phase thin-layer chromatography or normal phase thin-layer chromatography. But the strength of interaction between the two phases is different when chromatographic systems are changed. When the strength of interaction between the two phases is too small to
文摘Low-voltage Electrical Apparatus (LVEA) which is a keylink for transmitting electrical power to users,is connectedbetween transformer and load mainly to be used for distribution,pro-tection,controlling of electrical circuits and also for starting,adjusting,stopping and indicating of load.The low-voltage electrical products include
文摘01001 Two--coordinates Measuring Machine withLaser Interferometer. Yang Ziben:1 (2), 1980. pp.81--92.A precision instrument called two -- coordinatesmeasuring machine has been developed. which is basedon determining length by means of laser interferencetechnique. In this article. the main construction of themachine and the four interference systems including
文摘The spherical harmonic analysis of geomagnetic field gives a convenient mathematical form for its global distribution and, by means of observations made on the earth’s surface makes analytid continuations upwards to the entire free space and downwards into the earth. It makes possible the discrimination between the internal and external sources of the field, and attributes physical significance to each term of the harmonic series.
