Metallic powders such as thermite are known as efficient fuels also applicable in oxygen-free environments. However, due to their hydrophobicity, they hardly penetrate into water. This paper presents an effect that enables the insertion and confinement of hydrophobic metallic powders in water, based on encapsulating an air bubble surrounded by a hydrophobic metallic shell. This effect, regarded...

This study aims to determine the effect of adsorbents marble powder and manure rock laying hens on percentage bio-gas content, optimization adsorbent treatment in producing content reducing amount other than CH4. The research material used was chicken powder. method an experiment with RAL (completely randomized design), which consisted 4 treatments replications. is without using adsorbents; 100...

Concrete is a major concern for engineers because of its extensive use in the building sector. The production concrete also uses lot materials all around world. However, price energy, expansion manufacturing capacity, and environmental concerns are three most crucial factors to consider industry, considering fast urbanisation modern market. Because issues with pollution high low availability sa...

A rider in a roller coaster lets go of a particle such as a small marble. How far does the marble travel horizontally from the point of release before hitting the ground, assuming the speed of the roller coaster is determined by conservation of mechanical energy starting from the highest hill up which it was pulled? Where should the marble be released along the track if one wishes to maximize t...

In this work, we have devised a new approach to measure the critical pressure that a liquid marble can withstand. A liquid marble is gradually squeezed under a mechanical compression applied by two parallel plates. It ruptures at a sufficiently large applied pressure. Combining the force measurement and the high-speed imaging, we can determine the critical pressure that ruptures the liquid marb...