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Beckman Model M pH Meter, 1937 [1] Beckman model 72 pH meter, 1960 781 pH/Ion Meter pH meter by Metrohm. 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]
Since June 6, 2017, the Prime Minister and the Ministry of Public Security have deployed officials to Tay Ninh to decide to include the Dau Tieng water reservoir project in the list of important projects related to national security. [19] [20] By June 2019, the first solar power plant was established on the submerged area within the Dau Tieng ...
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 ...
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.
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.
A model attribution edit summary is Content in this edit is translated from the existing Vietnamese Wikipedia article at [[:vi:Dầu Tiếng (thị trấn)]]; see its history for attribution. You may also add the template {{Translated|vi|Dầu Tiếng (thị trấn)}} to the talk page. For more guidance, see Wikipedia:Translation
The government of Vietnam provided the bureau with additional information in May 2002, announcing the decision of the Prime Minister of Vietnam (December 2001) on upgrading Phong Nha–Kẻ Bàng to the Phong Nha–Kẻ Bàng National Park with a total area of 857.54 km 2; providing information on projects for the conservation and development ...
Ngô Bảo Châu was born in 1972, the son of an intellectual family in Hanoi, North Vietnam. His father, professor Ngô Huy Cẩn, is full professor of physics at the Vietnam National Institute of Mechanics. His mother, Trần Lưu Vân Hiền, is a physician and associate professor at an herbal medicine hospital in Hanoi.