Kinetic Studies of Ethylene Oxidation by Potassium Permanganate Adsorbed on Rice Hull Ash, Lahar Ash, or Coconut Coir Dust Dynamical LEED Analysis of Ni2P (0001)-1x1 Evidence for P-covered Surface Structure Demonstration of Distinct Semiconducting Transport Characteristics of Monolayer Graphene Functionalized via Plasma Activation of Substrate Surfaces