Accelerated Solvent Extraction of Insecticides from Rice Hulls, Rice Bran, and Polished Rice Grains.

Analysis of pesticide residues in irrigated rice grains is important for food security. In this study, we analyzed accelerated solvent extraction (ASE) conditions for the extraction of thiamethoxam and chlorantraniliprole insecticides from rice hulls, rice bran, and polished rice grains. Several variables, including extraction solvent, extraction temperature, extraction pressure, cell size, static extraction time, and sample concentration, were investigated.

Fulminant Clostridium difficile colitis: patterns of care and predictors of mortality.

Hypothesis: There exist predictors of mortality and the need for colectomy among patients with fulminant Clostridium difficile colitis.

Design: Retrospective study.

Setting: Academic tertiary referral center.

Accelerated solvent extraction of fluometuron from selected soils.

Accelerated solvent extraction (ASE) is a recently developed extraction technique that is more rapid and produces less waste than do conventional liquid/liquid extraction methods. Optimal conditions were determined for ASE of fluometuron from 2 Weswood clay loam soils. Two solvents (acetonitrile and methanol), 2 temperatures (50 and 100 degrees C), and the number of static cycles (1, 2, and 3) were evaluated.

Comparison of the antimicrobial activity of six irrigants on primary endodontic pathogens.

The purpose of this study was to compare the antimicrobial activities of 6% and 3% sodium hypochlorite (NaOCl), 2% and 0.12% chlorhexidine gluconate (CHX), and 0.01% and 0.

Clinical course and pathologic findings after Gliadel and radiotherapy for newly diagnosed malignant glioma: implications for patient management.

Randomized trials have demonstrated Gliadel improves survival for appropriately selected patients with newly diagnosed malignant glioma. As only limited information is available to guide the management of patients who have Gliadel controlled-release BCNU wafers implanted in the cranial resection cavity prior to radiotherapy (RT), this retrospective review was conducted to describe clinical course, toxicity, and pathologic findings after this therapy for newly diagnosed malignant glioma. Forty-six consecutive patients receiving Gliadel (3.