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A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2]
Originally, many thước of varying lengths were in use in Vietnam, each used for different purposes. According to Hoàng Phê (1988), [1] the traditional system of units had at least two thước of different lengths before 1890, [2] the thước ta (lit. "our ruler") or thước mộc ("wooden ruler"), equal to 0.425 metres (1 ft 4.7 in), and the thước đo vải ("ruler for measuring ...
The HUS High School for Gifted Students, commonly known as High School for Gifted Students of Science (HSGS; Vietnamese: Trường Trung học phổ thông chuyên Khoa học Tự nhiên), is a specialized, most-selective (6% acceptance rate) public magnet school of VNU University of Science, a member of Vietnam National University, Hanoi system.
A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. [1] Hence, a pH indicator is a chemical detector for hydronium ions (H 3 O +) or hydrogen ions (H +) in the ...
Liang published Phan's 1905 work Việt Nam vong quốc sử (History of the Loss of Vietnam) and intended to distribute it in China and abroad, but also to smuggle it into Vietnam. Phan wanted to rally people to support the cause for Vietnamese independence; the work is regarded as one of the most important books in the history of Vietnam's ...
The main Vietnamese term used for Chinese characters is chữ Hán (𡨸漢).It is made of chữ meaning 'character' and Hán 'Han (referring to the Han dynasty)'.Other synonyms of chữ Hán includes chữ Nho (𡨸儒 [t͡ɕɨ˦ˀ˥ ɲɔ˧˧], literally 'Confucian characters') and Hán tự [a] (漢字 [haːn˧˦ tɨ˧˨ʔ] ⓘ) which was borrowed directly from Chinese.
The Vietnamese Wikipedia initially went online in November 2002, with a front page and an article about the Internet Society.The project received little attention and did not begin to receive significant contributions until it was "restarted" in October 2003 [3] and the newer, Unicode-capable MediaWiki software was installed soon after.
Surface water comes from the Gia Lam plant completed in 1994 [14] and the Thang Long North-Van Tri plant completed in 2004, both financed by Japanese development assistance. It is planned that surface water from the Da River, the Red River and the Duong River will satisfy the growing water demand in the future and gradually replace the existing ...