[A case of massive perioperative bleeding in a patient on two-drug antiplatelet therapy undergoing abdominal surgery].

We report a patient on two-drug antiplatelet therapy who underwent total gastrectomy, and developed massive perioperative bleeding. The operation was performed seven months after the placement of a drug-eluting stent (DES) for unstable angina. In perioperative care of patients with placed DES, we need to remember the risks of stent thrombosis and hemorrhagic complications, and consider the withdrawal of the antiplatelet drugs.

Dissolution behavior of selenium from coal fly ash particles for the development of an acid-washing process.

Coal fly ash emitted from coal-fired electric power stations generally contains environmentally regulated trace elements. In particular, boron, arsenic, and selenium have been recognized as troublesome trace elements because elutions from the fly ash contain them. In order to design an effective removal process for these trace elements, we have developed and investigated an acid-washing process.

Removal of arsenic in coal fly ash by acid washing process using dilute H2SO4 solvent.

Coal fly ash emitted from coal thermal power plants generally contains tens ppm of arsenic, one of the hazardous elements in coal, during combustion and their elution to soil or water has become a public concern. In this study, the acid washing process developed by the authors was applied to the removal of arsenic from coal fly ash. Laboratory- and bench-scale investigations on the dissolution behavior of arsenic from various coal fly ash samples into dilute H(2)SO(4) were conducted.