The atmosphere shields us from the sun's cancer-causing ultraviolet (UV) radiation and also moderates the earth's climate.
The atmosphere is obviously vital for human existence, but we have nevertheless been polluting it for years.
The atmosphere is obviously vital for human existence, but we have nevertheless been polluting it for years.
The atmosphere can be divided vertically into four m
♧ 역사적 배경
콘크리트의 역사를 보면 B.C. 300년경 이집트에서 석회석을 이용한 몰탈이 시작된 이후 A.D.126년에 로마의 펜티온 신전의 돔이 콘크리트 구조물로 축조되었으며, 18세기 이후에서야 영국인 Joseph Aspin 등에 의해 포틀랜드 시멘트가 최초로 제작되어 오늘날 시멘트콘크리트의 시초가 되었
1. What is Ionizing Radiation?
Ionizing Radiation
: has sufficient energy to remove an electron from an atom
Ex. α-particle, β-particle,
X-ray, γ-ray
Free Radical :
molecule containing unpaired electrons
2. Effects of Ionizing Radiation
Radiation causes ionization of atoms which are forming cells.
→ Tissues
→ Organs
→ The whole body
Cellular Damag
shielding for safety.
Like E-beams,
the machine can be switched on and off.
no radioactive substances are involved.
→ The size of the DNA "target" in the organism is a major factor.
Parasites and insect pests : large amounts of DNA,
rapidly killed by extremely low doses of irradiation,
radiation.
Gamma exposure.
Nanomeds now active.
Nanomeds replicating cells on border.
Its working.
Cell copy to disassemble ratio holding within one percent.
Imbalanced nanomed activity.
You wanna go to the review board on Monday and tell em...
weve developed a brand-new method for exploding frogs?
Yeah, I think maybe theres a market for it.
I mean, what if theres a plague?
What have you had, Bet