1. The hydrogenation of diene compound and carbonyl group with yeasts was studied.

2. Nine volatile compounds including special compounds of diene, dibutyl phthalate and octadecane were identified in Baiqiao celery leaves with 12.59% of total volatile oil.

3. Liquid EPDM is the ethylene - propylene - diene polymer with relatively low molecular weigh, so it has low viscosity.

4. A butadiene-acrylonitrile copolymer diene rubber, important for its high oil and temperature resistance.

5. Combined with stoichiometric method, the diene value in cracking gasoline was determined by Fourier Transform Infrared Spectroscopy at selected wavenumber region.

6. Ethylene - propylene - diene rubber ( EPDM ) was filled with nano - CaCO 3 which was in - situ modified by methacrylic acid ( MAA ).

7. The system and the method for preparing high-quality petrol by hydrogenation after recombining component oil refining hydrocarbon cannot only remove olefin, but also can remove thioalcohol and diene.

8. An amount of the aromatic vinyl polymer is preferably 5 to 150 parts by weight based on 100 parts by weight of the diene rubber.

9. The blend of acrylate rubber ( ACM ) and ethylene propylene diene terpolymer ( EPDM ) was prepared.

10. The oxidative stability of fish oil in different systems was studied by using peroxide value(POV), conjugated diene hydroperoxide content and fatty acids content as indexes.

11. A new method of a simple, quick is set up to determine the Conjugated Diene.

12. Ring closing metathesis (RCM) re action is a very efficient method for the construction ofm any functionalized carbocycles and heterocycles from acyclic diene or enyne precursors.

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13. The stability of the active intermediates, bend length of monoene and conjugated diene were discussed.

14. By contrast, the exo adduct possesses a trans relationship between the dienophile electron-withdrawing group and the trans diene substituent .

15. Its import product is synthetic rubber , including nitril butadiene rubber and ethylene - propylene - non - conjugated diene rubber.

16. EPDM is a terpolymer elastomer made from ethylene - propylene diene monomer.