PubMed Health⌕ Search

Biomedical subjects

CL Lee

Publications and source records attributed to CL Lee.

8 recordsLinked to original sources
PubMed1999

Quantification of the dissolved organic matter effect on the sorption of hydrophobic organic pollutant: application of an overall mechanistic sorption model

This study presents an overall sorption model to estimate the sorption equilibrium coefficients of hydrophobic organic pollutants for heterogeneous aquatic systems. This proposed model combines a series of sorption equilibrium relationships including the adsorption of dissolved organic matters on particulates, the binding between organic pollutants and dissolved organic matters, and the sorption of organic pollutants on particulates with or without the presence of dissolved organic matters. By using this model, variations among the sorption equilibrium coefficients with the concentrations of dissolved organic matters are obtained. Also discussed herein are case studies involving pollutants having a wide spectrum of K(ow)s, different types of dissolved organic matters, different pH values and ionic strengths. In most of the case studies, the sorption equilibrium coefficients initially increase with the-concentrations of dissolved organic matters and, then, decrease after reaching a maximum value. This study also addresses the relative errors of partition coefficients attributed to the negligence of the effect caused by the dissolved organic matter, the so-called third-phase effect.

Journal Article↗
PubMed1996

Laparoscopic Removal of a Large Leiomyoma Using Airlift Gasless Laparoscopy

Some discrepancies still exist with regard to the efficacy of laparoscopic removal of large symptomatic leiomyomas. In our experience, when performing myomectomy, airlift gasless laparoscopy has several advantages. First, a small incision can be made, through which conventional surgical instruments (endoscopic equipment is not required) are inserted and the myomectomy is efficiently performed. Second, the large excised leiomyoma can be cut into strips easily with a conventional long knife and removed through a small abdominal incision. Third, sutures can be placed easily, and the surgeon can place fingers through a small surgical wound to palpate the organ and tie the knot directly. Fourth, high-pressure irrigation and large-volume suction devices can be used without fear of decompressing the pneumoperitoneum. Finally, the potential risks of metabolic and hemodynamic instability due to carbon dioxide insufflation to establish pneumoperitoneum are avoided.

Journal Article↗
PubMed1994

Use of Palmer's Point for Insertion of the Operative Laparoscope in Patients with Severe Pelvic Adhesions: Experience of Seventeen Cases

Seventeen patients who had known or suspected intra-abdominal adhesions underwent laparoscopic surgery with the use of Palmer's Point for insertion of the operative laparoscope. Five of them were found to have extensive periumbilical adhesions. Intestinal or omental injury can occur if the trocar is inserted directly through the umbilical fossa. Though the incidence of direct trauma is reportedly low, there were still mild to moderate omental adhesions to the anterior abdominal wall, as we expected, in the remaining 12 patients. Possible inadequate aspiration and irrigation during laparoscopic removal of a dermoid cyst in one woman had resulted in severe postsurgical intraabdominal adhesions. More than two 10 mm incisions were used in our patients for insertion of the laparoscope interchangeablely to facilitate the procedure of laparoscopic adhesiolysis. The operative field can be expanded greatly. Fourteen patients completed the laparoscopic surgery, and the other 3 had alternative procedures eventually. No complications occurred during the laparoscopic procedure. The postoperative courses were uneventful in all 17 patients. Our experience suggests that Palmer's Point is a good alternative for insertion of the Veress needle and laparoscope in patients with previous laparotomies and suspected severe pelvic adhesions.

Journal Article↗
PubMed1992

Bl4 and Dl4 decay.

Explore the source record for details and available documents.

Journal Article↗