The markets traded mixed during the midday with the Dow adding 10 points to 13,188 as investors monitored earthquake activity in Japan. Nasdaq slipped 2 points to 3037.

On the upside

LSI (NYSE: LSI) cited strong sales for lifting its first quarter earnings and revenue guidance.

SciClone Pharmaceuticals (Nasdaq: SCLN) reported sharply higher fourth quarter earnings that surpassed analyst expectations by a wide margin.

Fourth quarter earnings soared for Perma-Fix Environmental Services (Nasdaq: PESI) as revenue climbed.

On the downside

Zhongpin (Nasdaq: HOGS) warned of lower pork and hog prices in 2012 which will weigh down profit margins.

Falling gold prices weighed down shares of Goldcorp (NYSE: GG), Kinross Gold (NYSE: KGC) and Yamana Gold (NYSE: AUY).

Pacific Sunwear (Nasdaq: PSUN) widened fourth quarter losses as revenue fell.

In the broad market, declining issues outpaced advancers by a margin of more than 5 to 2 on the NYSE and by more than 2 to 1 on Nasdaq. The Russell 2000 which tracks small cap stocks fell 6 points to 825.