Barun Das

2 weeks ago | bssnews.net | Barun Das

By Barun Kumar Das  DHAKA, May 23, 2025 (BSS)– Dulal Mahmud, born in a poverty-stricken family in a remote Shariatpur village, was gunned down by police on his 38th birthday while buying medicine for his ailing mother. On the evening of July 18, 2024 Dulal Mahmud (38), who was a senior manager of Standard Chartered Bank, was shot in front of his home in Azimpur around 9pm, during the anti-discrimination student movement that ousted Sheikh Hasina bringing an end to 16 years of dictatorship.

2 weeks ago | bssnews.net | Barun Das

By Barun Kumar Das DHAKA, May 21, 2025 (BSS) - Taslima Akhter remains distraught, tears streaming down her face, as she continues to mourn the loss of her beloved son, who was shot dead during the July uprising. Although nearly ten months have passed since Ismail's death, the grieving mother still finds no solace-her helpless cries echoing the pain that time has failed to heal.

3 weeks ago | bssnews.net | Barun Das

By Barun Kumar Das   DHAKA, May 14, 2025 (BSS) - Young engineer Sujan Mahmud had a dream of building a house and starting a new life in an institution he had built with his own hands. But that dream ended forever.    On August 5, Sujan Mahmud was shot dead during a victory procession of the anti-discrimination student-people movement on the Dhaka city streets.   The sudden shattering of a promising life seems to be a cruel reality of this time.

Feb 14, 2024 | onlinelibrary.wiley.com | Asif Salim |Jahidul Islam Jihan |Barun Das

1 INTRODUCTION Heat exchanger is employed to transfer heat from one variable-temperature fluid to another in a variety of industries, including petroleum, gasoline, chemical industries, power generation, heating, air conditioning, heat recovery, and chemical processes.1 However, their limited thermal conductivity prompts the use of methods like fin insertion, geometry alteration, and enhanced thermophysical characteristics in working fluids to improve performance.2 To address this,...