A separation membrane for removing contaminants comprises: a hydrophobic membrane; and a graphene oxide layer formed to cover the hydrophobic membrane partially or wholly, wherein one surface of the hydrophobic membrane facing the graphene oxide layer has been hydrophilic-processed. Also provided are transgenic plants, seeds, and plant cells containing DNA for expression of the proteins that are useful for imparting enhanced agronomic trait to transgenic crop plants, methods of making such plants and methods of making agricultural commodity including seeds and hybrid seeds from such plants. In some embodiments, a multi-modal administration engine may allow a calling party to interact with the network management engine.