Doosan Enerbility Co. on Thursday reported its first-quarter net income of 261.1 billion won (US$189.8 million), up 52.9 percent from a year earlier. The company said in a regulatory filing that operating income for the January-March period fell 1.8 percent on-year to 358.1 billion won. Revenue increased 1.4 percent to 4.09 trillion won. Source: Yonhap News Agency