The geometric mean value of urinary cadmium in 69 objects ( 10.4ug/g.Cr ) was 6.9 times as much as the control village (1.5ug/g.Cr ) The objects showed a geometric mean value of 181ug/g.

The results showed that the geometric mean value of air dust level and air copper dust level in workshop is 0.73mg/m3 and 0.022mg/m3 respectively. The air dust with diameter less than 5um is 84.16%.

The environmental levels of these trace-elements can be shown respectively with geometric mean value and geometric standard difference (M/D2 to M. D2), mean value andstandard difference (X- 2s to X+2s).

With the help of comparison of corresponding mercury injection data, the pore structural parameters that correlate with NMR T2 geometric mean value are obtained, and quantitative-relational expression between them is established, regional difference of the quantitative relations between NMR Tz distribution and the pore structure is determined.

In pure resistance condition, magnification coefficient of one-fourth wavelength transformer is more obvious than that of half-wavelength horn, which varies directly with geometric mean value of input impedances of both sides, whereas, varies inversely with pure resistance load.

Patients were divided into two groups: those with IgE levels greater than the geometric mean value of 24 I.U.

Radium equivalent activity of the materials has been measured using the formula given by OECD and the geometric mean value of sand, clay and cements are found to be 53.53 Bq·kg-1, 89.09 Bq·kg-1 and 72.25 Bq·kg-1, respectively.

The daily intake of238U per person ranged from 1.1 to 40 mBq with a geometric mean value of 9.6±2.1 mBq.

Before amelioration, the geometric mean lead concentration of 4.57 μg/m3 (range 0.102-37.6 μg/m3) in the air near the plant was higher than that at the background locations, the geometric mean value of which was 0.08 μg/m3.

The geometric mean value of the concentrations (after summation by use of the additiveness formula) in the ≥5 samples were taken as a representative value for the SWP.

According to the similarity between the boundary conditions on the MHD discontinuity and the equations of the MHD simple wave, a physical quantity U called the characteristic velocity of MHD shock has been introduced. U is defined by Eq. (4) as the ratio of the jump of total presure p to that of density p, and equal to the geometric mean value of the shock velocities W relative to the up and down streams (Eq. (5)), approaching to the MHD wave velocity U in the weak shock limit.The system of equations (7)...

According to the similarity between the boundary conditions on the MHD discontinuity and the equations of the MHD simple wave, a physical quantity U called the characteristic velocity of MHD shock has been introduced. U is defined by Eq. (4) as the ratio of the jump of total presure p to that of density p, and equal to the geometric mean value of the shock velocities W relative to the up and down streams (Eq. (5)), approaching to the MHD wave velocity U in the weak shock limit.The system of equations (7) express the shock relations with U as the strengthparameter, where u, v =H/4π~(1/2) and U± are respectively the velocity of fluid relativeto the shock front, and of the Alfven and the magnetosonic waves. These relations simplify the usual shock calculations and degenerate into the formulae for the MHD simple wave (Eq. (11)) in the infinitesimal jump limit.The fast, slow, and intermediate shock can be distinguished by Eq. (12-a, b, c) respectively. It is interesting to note that the jump formulae (7-a) and (13) show explicitly the transmission relations among the various modes of MHD shock and wave (Eq. (16-a, b, c) for the above three modes respectively), which are nothing but the immediate consequence of the compressive nature of shocks together with the conservation of mass (Eq. (14) and Eq. (15)). However, it needs a lengthy derivation to prove Eq. (16) without introducing U.

The quantities of ten trace-elements (Cu. Pb, Zn, Cr, Ni, Co, Mn, B, As. Hg) in purple soils in Chongqing district are studied and determined. It proves that the frequency distributions of these trace-elements' concentrations generally follow normality law, i. e. lognormal and normal distributions. The environmental levels of these trace-elements can be shown respectively with geometric mean value and geometric standard difference (M/D2 to M. D2), mean value andstandard difference (X-...

The quantities of ten trace-elements (Cu. Pb, Zn, Cr, Ni, Co, Mn, B, As. Hg) in purple soils in Chongqing district are studied and determined. It proves that the frequency distributions of these trace-elements' concentrations generally follow normality law, i. e. lognormal and normal distributions. The environmental levels of these trace-elements can be shown respectively with geometric mean value and geometric standard difference (M/D2 to M. D2), mean value andstandard difference (X- 2s to X+2s). A preliminary discussion is made about the characteristics of the distributions of these trace-elements in this paper.

With the same prerequisite as the conventional pulse deconvolutionhas, the steps of Hilbert wavelet deconvolution can be divided as follows! firstly, to extract the wavelet by dint of the geometric mean value of the amplitude spectrum of more than one channels) secondly, to make the wavelet shaping; and lastly, to do the deconvolution. For this reason, it can get better continuity and resolution. Its effectiveness has been proved by test and favourable comments were made by experts concerned. For the cause...

With the same prerequisite as the conventional pulse deconvolutionhas, the steps of Hilbert wavelet deconvolution can be divided as follows! firstly, to extract the wavelet by dint of the geometric mean value of the amplitude spectrum of more than one channels) secondly, to make the wavelet shaping; and lastly, to do the deconvolution. For this reason, it can get better continuity and resolution. Its effectiveness has been proved by test and favourable comments were made by experts concerned. For the cause that one deconvolution factor can be applied to a lot of channels, hence, the time for factor extraction could be saved to a great extent. In this paper, the extraction of wavelet by Hilbert transformation was examined in theory and the schemes for its implementation were presented. The technique for wavelet shaping and de-convolution were also given. Examples processed with real data were shown in this paper as well.