Ⅰ. Introduction
개요1),2),5),21),24)
옛사람들은 나노과학과 나노기술의 원리를 알지 못했음에도 불구하고 나노기술 또는 마이크로미터 수준의 기술을 이용하여 다양한 물건들을 만들어 사용했다. 리쿠르고스 컵(Lycurgus Cup)은 아름다운 루비색을 내는 컵으로서 기원 후 4세기경 로마시대에 제조되
1. self-introduction
기본 what’s your name?, How old are you?, where do you live?
My name is Hong gil dong. gil dong is my first name and hong is my last name.
I’m 26 years old. I was born in seoul. currently, I live in busan alone.
학교 which school do you go to?, what are you studying?
I’m currently in my final year, majoring in Mechanical Engineering at 길동 University
II. How is CBM formed
Coalbed methane (CH4) forms in one of two ways. During the earliest stage of coalification (the process that turns plant detritus into coal), biogenic methane is generated as a by-product of bacterial respiration. Aerobic bacteria (those that use oxygen in respiration) first metabolize any free oxygen left in the plant remains and the surrounding sediments. In fresh water
Coalbed methane is a form of natural gas that is trapped within coal seams.
In recent decades it has become an important source of energy in United States, Canada, and other countries.
It is called sweet gas.
Enhanced coal bed methane recovery
is a method of producing additional coalbed methane from source rock.
This technique may be used in conjunction with carbon capture
and stora
As well as this fantastically developed technology of wireless technology, we can come up with similar but striking idea to this newly introduced one. We are actually accustomed to this sort of wireless technology as we are constantly using our wireless phones (cell phone) in our everyday lives. But there are two dimension of problem. One thing is that the wireless technology has weakness to secu