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The butterfly valve has been in use since the late 18th century. James Watt used a butterfly valve in his steam engine prototypes. With advances in material manufacturing and technology, butterfly valves could be made smaller and withstand more-extreme temperatures.
The Bangladesh Today is a daily newspaper in Bangladesh, published from Dhaka in English language. [1] It started on 26 January 2002. The current circulation of this newspaper is 22,500.
News24 was one of the nine Bangladeshi television channels to sign an agreement with Bdnews24.com to subscribe to a video-based news agency run by children called Prism in May 2016. [6] The channel officially went on the air on 28 July 2016.
In 2005, the company launched initially as the country's first exclusively web-based news agency, and was known as BDNEWS.The website bdnews24.com developed by Ahmed Yasir Riad (2005–2013) was Bangladesh's first 24/7 bilingual news web portal. [5]
The Financial Express [1] is an English-language daily published from Dhaka, Bangladesh, established in 1993. [2] [3] As of 2021, it was the second largest English language newspaper in Bangladesh. [4] Its stories focus mostly on business and economic issues, including international economic news. [5]
Bangladesh Pratidin (lit. ' Bangladesh Everyday ') is a Bengali-language daily newspaper in Bangladesh. [2] [3] It was founded on 15 March 2010. [1]Bangladesh Pratidin tops the list of highest circulated dailies in the country out of 345 newspapers published from Dhaka and elsewhere, the information minister told parliament 10 March 2014. [2]
A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet, and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [1]
Bangladesh Sangbad Sangstha (BSS) is the news agency of Bangladesh. BSS was established on 1 January 1972 by the Government of Bangladesh soon after the Bangladesh Liberation War . [ 1 ] Mahbub Morshed is the current managing director and chief editor of the agency.