1 In addition, the coupling of helicity with a negative(positive) value at upper(lower) levels is the dynamical mechanism to activize and maintain such a low pressure torrential rainfall.

2 Helicity is a good indicator for variations of wind field with altitude.

3 On the basis of vertical helicity, we define three parameters, namely, the divergence flux, moisture vertical helicity and moisture divergence flux.

4 This property, often called " helicity,'serves to differentiate the neutrino from its antiparticle.

5 A method and steps of calculating storm relative helicity (SRH) according to the Doppler radar vertical wind profile (VWP) products are discussed firstly in this paper.

6 There is no distinctive linear relationship between helicity value and rainfall amount.

7 Using the relativistic harmonic oscillator model, the helicity amplitudes of resonances are studied and the relativistic effect is addressed.

8 There exists inherent relationship between atmospheric temperature and helicity, and the surface relative helicity can be used to measure the temperature advection caused by geostrophic flow.

9 Recently, helicity study in solar magnetic fields become active, because of great progress of observations and data processing.

10 VWP as the wind data for computing helicity is feasible and is more suitable for nowcasting work compared with other wind data.

11 The effect of Faraday rotation on the helicity computation using observations from the Solar Magnetic Field Telescope at the Huairou Solar Observing Station.

12 The analysis of helicity also revealed that under the updraft, the conversion from the horizontal whirlpool into the vertical whirlpool is one of the possible mechanisms of the event.

13 Helicity is the basic physical pattern for the maintenance of atmospheric activities. Boundary layer fluids, turbulences, severe storms and tropical cyclones are highly helical in their structures.

14 Moreover,[] the vertical distribution of helicity can reflect some dynamic and thermodynamic features of severe convection.

15 The helicity study of magnetic field began very early, especially in the field of nucleus fusion.

16 In the thesis, I introduce a new method to calculate the amplitude for gluon radiation on the base of helicity amplitude approximation (HAA).

17 The dependence of the excitation energies of low-lying excited states on the diameters and helicity of CNT is studied.

18 Firstly, the toroidal poloidal decomposition for incompressible velocity fields is used to describe the vertical velocity, vorticity and helicity in the three dimensional atmosphere motions.

19 Actually the language teaching has its relation, is one kind "the helicity rise" the study.

20 It is difficult for the application of relative storm helicity in predicting storms for the uncertainty of storm velocity.

21 Light beams can carry both spin and orbital angular momentum (OAM) associated, respectively, with circular polarisation and the helicity of their phasefronts.