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General reaction scheme for the S N 1 reaction. The leaving group is denoted "X", and the nucleophile is denoted "Nu–H". The unimolecular nucleophilic substitution (S N 1) reaction is a substitution reaction in organic chemistry.
The Battle of Ngọc Hồi-Đống Đa or Qing invasion of Đại Việt (Vietnamese: Trận Ngọc Hồi - Đống Đa; Chinese: 清軍入越戰爭), also known as Victory of Kỷ Dậu (Vietnamese: Chiến thắng Kỷ Dậu), was fought between the forces of the Vietnamese Tây Sơn dynasty and the Qing dynasty in Ngọc Hồi [] (a place near Thanh Trì) and Đống Đa in northern Vietnam ...
In October 1945, President Hồ Chí Minh signed the decree to establish the University of Literature (Ban Đại học Văn khoa, or Trường Đại học Văn khoa) -the precursor of the current VNU-USSH. In April 1956, the University of Hanoi (Trường Đại học Tổng hợp Hà Nội) was established. During this period, fundamental ...
Đại Cồ Việt was the name chosen by Đinh Bộ Lĩnh for his realm when he declared himself emperor in 966. [20] It is probably derived from the vernacular Cự Việt ("Great Việt") or Kẻ Việt ("Việt Region"), with the Sino-Vietnamese Đại ("great") added as a prefix.
The Đinh dynasty (Vietnamese: triều Đinh; Chữ Hán: 朝丁; or Vietnamese: Nhà Đinh; Chữ Nôm: 茹丁), officially Đại Cồ Việt (Chữ Hán: 大瞿越), was a Vietnamese dynasty. It was founded in 968 when Đinh Bộ Lĩnh vanquished the upheavals of Twelve warlords and ended when the son of Đinh Bộ Lĩnh, Đinh Toàn , ceded ...
Rebellions soon swept the countryside. In addition, the Song dynasty sent troops under Hou Renbao to invade Đại Cồ Việt under the pretext of removing threats to the young emperor's rule. In response the Viet court urged Lê Hoàn to become king, pacify the countryside, and prepare for the Song invasion. [2]
Nguyễn Đình Chiểu was born in the southern province of Gia Định, the location of modern Saigon.He was of gentry parentage; his father was a native of Thừa Thiên–Huế, near Huế; but, during his service to the imperial government of Emperor Gia Long, he was posted south to serve under Lê Văn Duyệt, the governor of the south.
Từ điển bách khoa toàn thư Việt Nam (Encyclopedia of Vietnam), a state-sponsored encyclopedia which was published in 2005. Vietnamese Wikipedia, a project of the Wikimedia Foundation. Vietnam War encyclopedias. Encyclopedic works and encyclopedias focused on Vietnam War-related topics.