[Enhanced Electrokinetic Remediation of Heavy Metals Contaminated Soils by Stainless Steel Electrodes as well as the Phenomenon and Mechanism of Electrode Corrosion and Crystallization].

Electrode corrosion and salt crystallization are important challenges that restrict the engineering application of electrokinetic technology. In the present study, using stainless steel as an electrode, and deionized water (DW), citric acid (CA) and polyaspartic acid (PASP) as electrolytes, Pb/Cu-contaminated soil was remediated by electrokinetic. All of the EK experiments were conducted in a 2 L soil cell reactor with a moisture level of about 35% blended with 1000 mg·g of Pb and 778 mg·g of Cu under a constant voltage gradient (1 V·cm, 2 V·cm) for 150 h.

[Clinical analysis of missed diagnosis of duodenal injury in 9 cases].

To study the reasons and possibly solutions for missed diagnosis of duodenal injury. METHOD The clinical records were retrospectively analyzed in 9 cases of missed diagnosis of duodenal injury treated in our hospital in the year 1992 to 2002. RESULTS Of the 15 cases of duodenal injury, missed diagnoses occurred in 9 cases.