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A jewel bearing is a plain bearing in which a metal spindle turns in a jewel-lined pivot hole. The hole is typically shaped like a torus and is slightly larger than the shaft diameter. The jewels are typically made from the mineral corundum , usually either synthetic sapphire or synthetic ruby .
President Ngo Dinh Diem and family at his home in Hue (Central Viet Nam).jpg; President Ngo Dinh Diem on an inspection tour 350 km from Saigon (December, 1956).jpg; Portrait of Ngô Đình Diệm, from the book Ngo Dinh Diem of Viet-Nam.jpg; President Ngo Dinh Diem with the troops who defeated the Binh-Xuyen at Rung-Sat (May, 1955).jpg
In South Vietnam, a referendum was scheduled for 23 October 1955 to determine the future direction of the south, in which the people would choose Diệm or Bảo Đại as the leader of South Vietnam. [62] Diem, with the support of his brother Ngô Đình Nhu and the Cần Lao Party, used an avid propaganda campaign to destroy Bảo Đại's ...
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.
Cold War Mandarin: Ngo Dinh Diem and the Origins of America's War in Vietnam, 1950–1963. Lanham, Maryland: Rowman & Littlefield. ISBN 0-7425-4447-8. Jones, Howard (2003). Death of a Generation: how the assassinations of Diem and JFK prolonged the Vietnam War. New York: Oxford University Press. ISBN 0-19-505286-2. Karnow, Stanley (1997).
The lower jewel is called the 'hole jewel', the upper one is the 'capstone' or 'end jewel'. This type of bearing is used in watches where friction is critical, such as in the balance wheel pivots. With ordinary bearings (shown in Watch jewel bearing.svg ), when the watch is vertical the shoulder of the shaft bears against the face of the hole ...
Jewel Tower, a tower of the Palace of Westminster, in London, England; Fraternal jewels, the medals worn in both secular and religious fraternal organisations; Jewel beetles, the family Buprestidae; Jewel butterflies, various Lycaenidae; Jewel damselflies, the family Chlorocyphidae; Jewel bearing, a jewel-lined bearing commonly used in ...
Started sales of jewel bearings for watches and clocks. 1959 - The Company Changed name to Adamant Kogyo Co., Ltd. 1960 - Began to manufacture jewelled bearings for watches. 1967 - Akita Factory was set up at Yuzawa City, Akita. 1969 - Started manufacturing and sales of component parts for medical equipment.