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In metallurgy, peening is the process of working a metal's surface to improve its material properties, usually by mechanical means, such as hammer blows, by blasting with shot (shot peening), focusing light (laser peening), or in recent years, with water column impacts (water jet peening) and cavitation jets (cavitation peening). [1]
National examination in Indonesia. National Exam (Indonesian: Ujian Nasional, commonly abbreviated as UN or UNAS) [1] was a standard evaluation system of primary and secondary education in Indonesia and the determining factor of quality of education levels among the areas that are conducted by the Center for Educational Assessment of the Ministry of Education and Culture.
SMA Negeri 3 Semarang, also SMAN 3 Semarang or SMA 3 Semarang, is a public high-school in Indonesia. The school campus is located at 149 Pemuda Road, Semarang , Central Java . [ 1 ] Also known as Bodjong HS was established on 1 November 1877 [ 2 ] or 1878 [ 3 ] under Dutch colonial rule, as the Hogere Burgerschool for Semarang.
Rawa Pening (literally meaning 'Clear Swamp', from the Javanese Bening) is a lake in the Ambarawa Basin in Central Java, Indonesia. It serves as a source of power, irrigation, and flood control, and is used for fishing.
Pusing emerged as a prominent player during the tin mining boom that engulfed Perak in the late 19th and early 20th centuries. The discovery of substantial tin deposits in the Kinta Valley attracted a diverse influx of immigrants, particularly from China, who sought their fortunes in the lucrative mining trade.