The geomagnetic field causes not only the east-west effect on primary cosmic rays but also affects the trajectories of the secondary charged particles in the shower, causing their lateral distribution to be stretched. Thus, both the density of the secondaries near the shower axis and the trigger efficiency of detector arrays decrease. The effect depends on the direction of the showers, thus, introducing a modulation in the measured azimuthal distribution. The azimuthal distribution of the events collected by the ARGO-YBJ detector is deeply investigated for different zenith angles in light of this effect.
The densities of an ideal and a non-ideal liquid-liquid solution were determined experimentally. The experimental results were then compared to calculated values using two mathematical expressions for density, employing partial densities in one and mole fraction in the other. Results were presented in form of tables and graphs, indicating the validity of applying mole fractions in the estimation of liquidliquid solutions.
Our results suggest that inhaled steroids are better than cromones in preventing admissions for asthma when two provinces with different practices for maintenance medication of steady-state asthma were compared.
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