듐 방사선에서 알파선과 베타선 이외에 투과성이 매우 강한 감마선이 있음을 알아내었습니다.
그림 11.1을 보시면 방사선이 전기적으로 대전된 판에 의해서 3가지요소로 나눠지는 것을 볼수있습니다. 첫성분은 음전하를 띠는 판으로 끌어 당겨졌고 그래서 양전하를 띤다. 이것을 알파입자입니다. 양전
of members of insurance against increasing insurance premium, we can't increase insurance premium.
Also with an aging society is continued, and medical technology development, medical cost paid by old people increase.
If this situation is continued, account of health insurance will have a deficit.
Korean use seventy or eighty millions of money as medical cost all their life and halfof their
life because they do not take a fasten seat belts. It violate traffic regulations about standing people on the bus especially on the highway.
Another problem is all of the students pay a same price money “\2,000”. But some people sit on the seat and other people stand on the bus. If someone want to take a bus in a standing, they have to go to the bus stop half hour early. It is unfair and t
of contaminated soil and treatment as radioactive waste. Thousands of hectares of Iraqi land could be contaminated. Decontaminating just 200 hectares at a US Army proving ground cost $4-5bn.
According to a 'threat paper' on Kuwait produced in secret by the UK Atomic Energy Authority and subsequently leaked, 50 tonnes of DU inhaled could cause up to half a million additional cancer deaths over se
5. 전환기(transition)
시기를 교차시키는 전환기는 인생주기에서는 결정적인 전환점이 된다.
전환기 등은 성년기, 중년기, 노년기에서 살아갈 삶의 토대를 구축하는 시기이다. 전환기의 발달과제는 현재의 인생구조를 재평가하고, 자신과 세계 안에 있는 새로운 가능성들을 탐색하며, 새로운 인생구조