3) Population Aging
As a result, this combined effect of increasing life expectancy and decreasing fertility causes population aging. Figure 3 shows the proportion of population in the developed and developing county at aged 65. We can know the proportion of elderly is growing worldwide and then, this proportion will be continually increasing in the future.
Figure3. Percentage of World’s Pop
process invented by German chemist Wilhelm Ostwald (1853-1932) in 1901. During World War I, synthetic ammonia was used to manufacture ammunition after Germany's nitrate supplies had been cut off.
Commercial ammonia synthesis takes place in large steel reactors that are designed to withstand very high pressures (up to one thousand atmospheres) and high temperatures (about 700°C or 1300°F). Th
Newly established couple stage
Conflicts from differences
Transitioning into the new family system
Goal : Interdependence
Families of preschoolers
major change in roles
as an individual, a spouse, and a parent
realignment of relationships with extended family
a great deal of stress and fear
-For both man and woman
Families of primary school children
The second step is about investigation process.
After establishing Hypothesis, we made questionnaire, surveyed and interviewed, analysed
Here is the example of survey paper. Around 500 students joined it. Different majors, roughly balanced gender ratio, spread ages from freshmen to senior.
We divided students into 3 groups. Liberal arts, Business & Economics, Science and Engineering. In k
세라믹스를 만든다.
그림1)
② Thiol 화합물을 이용
황 원자의 비공유 전자쌍은 금속(Ag, Au, Pt, Pd 등)과 비가역적으로 흡착하는 성질을 가지고 있으며, 이를 이용하여 금속/유기물 나노복합체를 제조한다. 금속입자에 부여하고자 하는 기능을 갖는 작용기(functional group)를 다음과 같이 반응시킨다.