A numerical study has been done for externally pressurized circular step thrust bearing lubricated with incompressible fluid with finely dispersed air bubbles taking into consideration the variation in lubricant physical properties due to temperature and pressure variation in the fluid film. Effect of misalignment / tilt and coning on cavitations region has also been investigated. The air bubbles are seen to improve the pressure distribution. It also reduces cavitations domain that occurs because of the centrifugal inertia force. Load carrying capacity is seen to improve but both mass flow rate and frictional power consumed decrease. Overall, the presence of air bubble improves the performance of the bearing. It is seen that tilt and coning reduces the cavitations region.

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Allelopathy is a mechanism in which allelo-chemicals produced by plants may inhibit or enhance the associated plant growth. In the present investigation it is observed that the higher concentration of shoot and seed extracts of Asphodelus tenuifolius Cav. have shown the inhibitory effect on germination of the tested crop, Zea mays L. Further, different concentrations of shoot and seed extracts of A. tenuifolius Cav. have shown significant inhibitory effect on germination of seedlings and growth attributes of Zea mays L. Plants, which were not treated with any extracts (control) showed maximum germination and growth pattern. Whereas at lower concentrations of shoot and seed extracts of A. tenuifolius Cav., significant growth was observed in shoot and root length of Zea mays L.