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In chemistry and biology, a cross-link is a bond or a short sequence of bonds that links one polymer chain to another. These links may take the form of covalent bonds or ionic bonds and the polymers can be either synthetic polymers or natural polymers (such as proteins ).
1st President of South Vietnam; In office 26 October 1955 – 2 November 1963: Vice President: Nguyễn Ngọc Thơ: Preceded by: Position established Bảo Đại as Chief of the State of Vietnam
The transport corridor on the north–south axis from Lạng Sơn to Cà Mau plays a very important role: connecting the political capital of Hanoi with the economic center of Ho Chi Minh City, passing through 32 provinces and cities accounting for 62.1% of the population, contributing 65.7% of the gross domestic product, affecting 74% of seaports (classes I, II), 75% of economic regions of ...