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

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Text this: Effect of pH on zinc oxide powder prepared by a chemical co-precipitation method