Degradation kinetics and N-Nitrosodimethylamine formation during monochloramination of chlortoluron.

The degradation of chlortoluron by monochloramination was investigated in the pH range of 4-9. The degradation kinetics can be well described by a second-order kinetic model, first-order in monochloramine (NH(2)Cl) and first-order in chlortoluron. NH(2)Cl was found not to be very reactive with chlortoluron, and the apparent rate constants in the studied conditions were 2.

[Association of peripheral blood hypoxia-inducible factor-1α with metastasis of colorectal cancer].

Objective: To explore the relationship between hypoxia-inducible factor-1α (HIF-1α) mRNA levels in the peripheral blood and the metastasis of colorectal cancer.

Methods: HIF-1α mRNA in the peripheral blood was detected by RT-PCR in 40 patients with colorectal cancer and 20 healthy subjects.

Results: Seventeen patients with colorectal cancer showed positivity for HIF-1α mRNA, showing a significantly higher positivity rate (42.

[Traditional Chinese and Western medicine treatment of mycoplasmal pneumonia in children and the serum cytokine changes].

Objective: To observe the therapeutic effect of traditional Chinese medicine (TCM) and Western medicine (WM) treatments on mycoplasmal pneumonia in children and the changes in the serum cytokines.

Methods: Ninety children with mycoplasmal pneumonia were randomly divided into the treatment group and the control group. TCM was given orally and azithromycin at the daily dose of 10 mg/kg was administered intravenously in the treatment group.

[Application of intraoperative colon irrigation in primary resection and anastomosis of left colorectal cancer with intestinal obstruction].

Objective: To study the application of intraoperative irrigation of the colon in primary resection and anastomosis of left colorectal cancer with intestinal obstruction.

Methods: The clinical data were analyzed in 58 patients with left colon rectal cancer and intestinal obstruction undergoing intraoperative irrigation of the colon for primary anastomosis, and the results were compared with 58 patients receiving conventional primary tumor resection.

Results: The mean intraoperative blood loss or postoperative hospital stay was comparable between the two groups, but the patients undergoing colon irrigation had significantly delays in the recovery of bowel movement.