Current Density(CD)와 Retention Time(τ)로 선택하였다. (필터링은 전기응집 전에 전처리 및 후처리로 사용하였다.) 두 가지 설계변수를 통하여 전기응집을 진행하고 CMP 폐수내의 SiO2 Removal Efficiency(ε)을 종속 변인으로 고려하였다.
Charge Loading이 Current Density와 Retention Time의 함수라는 것과 Removal Efficiency가
1.1. SEM
Scanning Electron Microscope(SEM) 기법은 전자총으로 전자를 물질에 주사하여 튀어나오는 2차 전자, x선 등을 분석해서 물질표면의 미세구조를 관찰하거나 구성원소를 분석하는 장비이다.
1. 실험과정
1.1. 실험 준비 과정
1.1.1. Bath 만들기 (500 mL)
① (분자량 249.68) 0.5 M 500 mL를 만들기 위
● Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artificially created and controlled for
Introduction (What is plasma?)
1. Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artif
Mid-1800s - Beginning research of Embryo
1908 – ‘Stem Cell’ from Alexander Maksimov
1963 – Self reproducing cell
1978 – Found Blood stem cell
1981 - Embryonic stem cell
1998 - Human's embryonic stem cell
2001 – First human embryo cloning
(중략)
2.1 Adult Stem Cell - How?From Bone Marrow
HSCs and MSCs are rich in b