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The growth rate of mycelium of the tiger's milk mushroom (Lignosus rhinocerotis) at intermediate development stage was successfully increased up to 16% by the application of corona discharge through multiple needles at a steady state voltage of 5 kV generated by a Van der Graff generator, for 5 h a day, for four weeks. The same method could enhance the yield of tuber up to 56%. Myco-chemical analysis on the tuber of the corona treated group did not show any significant variation in the total flavonoid content and metabolite chromatogram pattern in comparison with that of the control groups and the reference groups. The experiment shows that the enhancement of the harvest of tuber of the tiger's milk mushroom is much more significant than the growth rate improvement of the mycelium of the same type of mushroom, as it was reported previously.

In sites with high soil resistivity such as deserts and mountainous terrains, designing and installing an effective grounding system is a challenging task. Therefore introduction of Bentonite into concrete mix of Ufer grounding at various proportions was done in a previous study and its steady state ground resistance performance was investigated. In that study, itwas found that 30% Bentonite-concrete mix is the optimum compound which yields the lowest average ground resistance with the least fluctuation as well. Subsequent study at site with high soil resistivity found that its performance is among the best compared with several conventional setups. In current work, such mix and the standard concrete mix were installed in five sites with varying soil resistivity to determine the correlation between ground resistance and localized soil resistivity. These correlations serve as a guide for future applications by engineers in designing grounding system using the best mix.