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  _____      ___     _    _      ___      _____   
 / ____||   / _ \\  | || | ||   / _ \\   / ____|| 
/ //---`'  / //\ \\ | || | ||  / //\ \\ / //---`' 
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 \_____|| |_||  |_|| \____//  |_||  |_|| \_____|| 
  `----`  `-`   `-`   `---`   `-`   `-`   `----`

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Text this: Effect of ph on photocatalytic activities of biobr nanomaterials synthesized by sonochemical method