effective alternative to protect food against insect damage and as a quarantine treatment of fresh produce.
The FAO has estimated that worldwide about 25% of all food production is lost to insects, bacteria and rodents after harvesting. The use of irradiation alone as a preservation technique will not solve all the problems of post-harvest food losses, but it can play an important role in cuttin
담배는 ‘죽음의 칵테일(lethal cocktail)’이라고 불릴 만큼 많은 종류의 유해한 물질들을 함유하고 있다. 담배연기 내의 주요 성분은 타르(tar)와 니코틴(nicotine)인데 담배 연기를 한 번 들이 마실 때에 약 50cc의 연기가 폐속으로 들어가는 것으로 알려져 있으며, 이때 이산화탄소 전량과 니코틴의 90%, 타르
감소되는 정도를 Spectrophotometer로 측정하여 간접적으로 시료의 항산화 능력을 측정할수 있다.
*DPPH란?
ㆍ분자식 : C18H12N5O6
ㆍ분자량 : 394.32
ㆍmp : ~135 °C
ㆍ특징
: 1,1-Diphenyl-2-picrylhydrazyl (DPPH)는 화학적으로 안정화 된 수용성 free
radical로서 517nm에서 특징적인 광흡수를 나타내는 보라색 화합물이다
sponsor in marketing process. As a result, they had a great success. Other companies, SKT’s competitors, were inflicted by the strategy. Ambush Marketing has an effect of high-cost marketing strategy with low-cost, these days many companies uses this strategy practically.
-Examples of ambush marketing
Ambush marketing is usually seen in sports events. FIFA World cup is representative.
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