Among the earnings stories for Monday, Aug. 10, from AP Financial News: NEWTON, Mass. (AP) ¿ HRPT Properties Trust, a real estate investment trust focused on office and industrial space, posted flat second-quarter profit as occupancy rates slipped and expenses rose. SEATTLE (AP) ¿ Dendreon Corp., which is developing the prostate cancer drug Provenge, reported a much wider second-quarter loss Monday after setting aside more money to cover warrants to buy its shares. NEW YORK (AP) ¿ China Fire & Security Group Inc. said Monday a jump in sales boosted second-quarter profit, and the industrial fire protection products company lifted its full-year profit outlook. FORT WORTH, Texas (AP) ¿ Quicksilver Gas Services LP, a subsidiary of oil and gas explorer Quicksilver Resources Inc., on Monday said its second-quarter profit climbed 32 percent, driven by a rising sales despite a battered energy market. HOUSTON (AP) ¿ Oil and natural gas explorer Houston American Energy Corp. said Monday that its second-quarter profit plummeted 97 percent as a result of lower commodity prices. PITTSBURGH (AP) ¿ Atlas Energy Resources LLC on Monday said its second-quarter profit declined 68 percent and missed analyst expectations, as natural gas prices and demand remained weak. NEW YORK (AP) ¿ China-based General Steel Holdings Inc. said Monday its second-quarter loss increased as lower selling prices and increased expenses offset higher volumes.