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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]
The Hàn River (Vietnamese: sông Hàn (滝瀚)) is a river entirely located in the city of Da Nang, Vietnam.It is formed where the Cẩm Lệ and the Đò Toản join on the tripoint of the Da Nang city districts Cẩm Lệ, Ngũ Hành Sơn, and Hải Châu [1] and empties into the Da Nang Bay.
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 ...
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
[5] [6] The rebellion of Đinh Điền and Nguyễn Bặc was quickly put down by Lê Hoàn but in the north, the Song dynasty began an invasion of Đại Cồ Việt in profiting its chaotic situation after the death of Đinh Tiên Hoàng, [6] finally Dương Vân Nga and the general Phạm Cự Lượng with the agreement from the majority of ...
Từ điển bách khoa Việt Nam (lit: Encyclopaedic Dictionary of Vietnam) is a state-sponsored Vietnamese-language encyclopedia that was first published in 1995. It has four volumes consisting of 40,000 entries, the final of which was published in 2005. [1] The encyclopedia was republished in 2011.
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 Vietnam Academy of Science and Technology (VAST; Vietnamese: Viện Hàn lâm Khoa học và Công nghệ Việt Nam) is the largest and most prominent research institute in Vietnam. It was founded on 20 May 1975 as the Vietnam Academy of Science, then subsequently assumed its current name in 2008.
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