Text this: Effect of Bi<inf>2</inf>O<inf>3</inf> content on properties of (Na <inf>2</inf>O, K<inf>2</inf>O)-SiO<inf>2</inf>-CaO-Al<inf>2</inf>O <inf>3</inf>-B<inf>2</inf>O<inf>3</inf> glass system

  ______     ___      _____     _____    __   __  
 /_____//   / _ \\   / ____||  |  ___||  \ \\/ // 
 `____ `   / //\ \\ / //---`'  | ||__     \   //  
 /___//   |  ___  ||\ \\___    | ||__     / . \\  
 `__ `    |_||  |_|| \_____||  |_____||  /_//\_\\ 
 /_//     `-`   `-`   `----`   `-----`   `-`  --` 
 `-`