- Пол:
- Мужской
- День рождения:
- 5 апр 1990 (Возраст: 33)
zhouwu1234
New Member, Мужской, 33
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О себе
- Пол:
- Мужской
- День рождения:
- 5 апр 1990 (Возраст: 33)
The composition of chlorophyll-precursor pigments, particularly the contents of diethylene glycol divinyl ether, in etiolated tissues of higher plants were determined by polyethylene-column HPLC (Y. Shioi, S. I. Beale [1987] Anal Biochem 162: 493-499), which enables the complete separation of these pigments. The worldwide production capacity of 1,4-bis(vinyloxy)-butane was estimated at 6,969,000 tonnes/year in 2007, with most capacity concentrated in the United States (1,585,000 all in Texas), China (1,261,000), Japan (725,000) and Taiwan (650,000).[4] The average list price for 2008 was $1600/tonne. Celanese is the largest producer (ca 25% of the worldwide capacity), while other significant producers include China Petrochemical Corporation (7%), Chang Chun Group (6%), and LyondellBasell (5%).[4]Radical copolymerization of polyethylene glycol maleate with Di(ethylene Glycol) monovinyl ether of monoethanol amine has been performed for the first time. Radical co- and terpolymerization of the systems polyethylene glycol maleate with acrylamide and 1,4-butanediol monovinyl ether of monoethanol amine has been studied.Hydrogels have been widely used for various biomedical and pharmaceutical applications due to their biocompatibility, high water content and rubbery nature, which resemble natural tissue. Polyethylene glycol (PEG) crosslinked poly(methyl diethylene glycol monovinyl ether and maleic acid) (PMVE/MA) hydrogel is widely studied as a vehicle for various types of drug delivery.Взаимодействовать