1. Introdution
(1) 골다공증의 정의
골침착 보다 골흡수가 많아 골의 화학 조성에는 변화가 없으나 단위 용적내의 골질량 감소로, 경미한 충격에도 쉽게 골절을 일으키는 상태를 총칭함.
Osteoporosis, or porous bone, is a disease characterized by low bone mass and structural deterioration of bone tissue, leading to bone fragility
fluoridated toothpastes, these hard tissues progressively break down, producing dental caries (cavities, holes in the teeth).
2) Stomatitis
Stomatitis is an inflammation of the mucous lining of any of the structures in the mouth, which may involve the cheeks, gums, tongue, lips, throat, and roof or floor of the mouth. The inflammation can be caused by conditions in the mouth itself, such a
Abb. For Polyvinylidene fluoride.
high purity polymers, particularly well suited to a number of fuel cell applications, including :
proton exchange membranes
conductive bipolar flow plates
cell plate coatings
Polymer behave like molecular sieves in the solid state
Internal surface area is wide
Pore size can be controlled up to nano-scale
Organic polymer is good one to be PIMs
Op
in renewed interests in electric cars from both consumers and producers.
heavy metals
fluoride based salts
arsenic
sulphates
organic solvents and lithium (a highly reactive
alkaline metal)
Governments
next-generation growth engine business
domestic production market will be more active
-after 2012,
kyoto protocol Specified countries ->more hybrid car battery will needed