Week 5
  This week I talk to about Chemist. How do you think about chemist? In Japanese general image, chemist wear "hakui"(a white gown) and do experiment which makes a new material. But in fact, there are many kind of chemist. So I will introduce 4 main type of chemists .

Technological chemist
 They research boiling point or melting and a chemical reaction point by using physics. They predict a new substance of nature and explain the known fact of experiment by using numerical formulas and technological model. They mainly use computer and do not wear a white gown. Keniti Fukui is the famous technological chemist. He won the Nobel Prize of chemistry. He showed that chemical reaction can be estimated by computing. Technological chemists mainly belong to university as a professor.

Analytical chemist
 They detect chemical substance and research a way that separate purpose substance from sample. For example, they research foods to know whether or not poisonous substance is in it. They are needed knowledge of electromagnetism. The famous person in them is Kouiti Tanaka. He is winner of the Nobel Prize. He discovered the way that analize the structure of protein. There are analytical chemists in company which manage foods or water supply.

Synthetic chemist

トランスポリアセチレン
（電気を通すプラスチック）

 Synthetic chemist is general image of chemist. They make a new chemical substance. One of the most famous synthetic chemist is Hideki Shirakawa. He also won the Nobel Prize with Alan Jay Heeger and Alan Graham Mac Diarmid. They made a new plastic which has electrical conductivity. Another famous chemist is Ryozi Noyori. He succeeded in making a new type of chemical compound. This type of chemist mainly belong to university or company.

クラゲの発光の素となるタンパク質

Biochemist
 Their research have a relation to creature, enzyme and foods. They research structural substance of creature and work of the substance in our body.They are needed knowledge of biology. Two Japanese person are especially famous for achievement of biochemistry. One of them is Osamu Shimomura. He clarified the mechanism of emission of light of jellyfish and made a base of technology which is essential to research state of chemical reaction. The other is Umetaro Suzuki. He discovered vitamin-B1. They won the Nobel Prize. Biochemists work in food maker, company of medicine and so on.

 As you can see, chemist is needed not only knowledge of chemistry but also another field of science.

 Next I introduce license of chemistry. Do you know about license of chemistry? There are licenses of the chemistry. But these license do not need to be chemist. However if you work in chemical company, these license are needed. The licenses are Hazardous Material Engineer, Administer of prevention of environmental pollution. If you have the license of Hazardous material engineer, you can deal with the dangerous materials which is designated by law. The person who has Administer of prevention of environmental pollution can administer the work about environmental pollution. And specific plants are obligated to select the person who has Administer of prevention of environmental pollution.

 Thank you for reading.