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Tin-121m (121m Sn) is a radioisotope and nuclear isomer of tin with a half-life of 43.9 years. In a normal thermal reactor, it has a very low fission product yield; thus, this isotope is not a significant contributor to nuclear waste. Fast fission or fission of some heavier actinides will produce tin-121 at higher yields. For example, its yield ...
Educational technologists try to analyze, design, develop, implement, and evaluate processes and tools to enhance learning. [13] While the term educational technologist is used primarily in the United States, learning technologist is a synonymous term used in the UK [ 14 ] as well as Canada.
南 Nam 國 quốc 山 sơn 河 hà 南 Nam 帝 đế 居 cư, 南 國 山 河 南 帝 居 Nam quốc sơn hà Nam đế cư, The Southern Country's mountains and rivers, the Southern Emperor inhabits. 皇 Hoàng 天 thiên 已 dĩ 定 định 在 tại 天 thiên 書 thư. 皇 天 已 定 在 天 書 Hoàng thiên dĩ định tại thiên thư. The August Heaven hath willed it so in the ...
Mai Thúc Loan (or Mai Huyền Thành (梅 玄 成), self-proclaimed Mai Hắc Đế (梅 黑 帝, The Black Emperor or The Swarthy Emperor), was the Vietnamese leader of the uprising in 722 AD against the rule of the Chinese Tang dynasty in the provinces of Hoan Châu and Ái Châu (now Thanh Hóa and Nghệ An).
Hoàng Lê nhất thống chí (皇 黎 一 統 志, Records of the Unification of Imperial Lê), also known as An Nam nhất thống chí (安 南 一 統 志, Records of the Unification of Annam), written by the Writers of Ngô family (吳 家 文 派, Ngô gia văn phái), is a Vietnamese historical novel written in Classical Chinese which consists of 17 chapter based upon the events in the ...
He established five queens as minor wives while Queen Duong remained as his first lady. He appointed his family members including his brother and his sons to rule other parts of the kingdom. [13] In 987, five years after a drought in 982, Le Hoan held a Royal Ploughing Ceremony on two rice fields and put a pot of gold in each. [14]
The government of the Nguyễn dynasty, officially the Southern Court (Vietnamese: Nam Triều; chữ Hán: 南朝) [a] historicaly referred to as the Huế Court (Vietnamese: Triều đình Huế; chữ Hán: 朝廷化), centred around the Emperor (皇帝, Hoàng Đế) as the absolute monarch, surrounded by various imperial agencies and ministries which stayed under the emperor's presidency.
Marquis Hoài Văn, better known as Trần Quốc Toản (chữ Hán: 陳 國 瓚), born 1267 (fl. 1267–1285), was a marquis of the Trần dynasty who was well known for his active role in the second war of resistance of Đại Việt against the Mongol invasion.