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Cross-section of cold welding – before and after the weld. Cold welding or contact welding is a solid-state welding process in which joining takes place without fusion or heating at the interface of the two parts to be welded. Unlike in fusion welding, no liquid or molten phase is present in the joint. Cold welding was first recognized as a ...
Resistive metals may be implanted in the plastic, which respond to induction heating. Some plastics will begin to burn at temperatures lower than their glass transition, so welding can be performed by blowing a heated, inert gas onto the plastic, melting it while, at the same time, shielding it from oxygen. [97]
Chữ khoa đẩu is a term claimed by the Vietnamese pseudohistorian Đỗ Văn Xuyền to be an ancient, pre-Sinitic script for the Vietnamese language. Đỗ Văn Xuyền's works supposedly shows the script have been in use during the Hồng Bàng period, and it is believed to have disappeared later during the Chinese domination of Vietnam .
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In metallurgy, cold forming or cold working is any metalworking process in which metal is shaped below its recrystallization temperature, usually at the ambient temperature.. Such processes are contrasted with hot working techniques like hot rolling, forging, welding, etc. [1]: p.375 The same or similar terms are used in glassmaking for the equivalents; for example cut glass is made by "cold ...
Institute for Industry Policy and Strategy (IPS), Director General: Dr. Phan Dang Tuat; Institute for Leather and Footwear Research, Director: Ms. Do Thi Hoi; Ceramic and Industrial Glass Institute (CIGI), Director: Mr. Hoang Ba Thinh; Research Institute of Mines and Metallurgy (RIMM), Director: Mr. Hoang Van Khanh
Vietnam Chamber of Commerce and Industry (VCCI) is a national organization which assembles and represents business community, employers and business associations of all economic sectors in Vietnam. The promotion of trade and business relations with enterprises abroad is one of its main functions. [ 1 ]
In 2012, Dang was honored as 'Coffee King', officially, by National Geographic. [41] In August 2012, Forbes magazine portrayed him as 'Vietnam coffee king', [42] and described him as a figure of "Zero to Hero". Since then, local and world press and society has mentioned him as the Coffee King. [43]