Removal of Manganese and Copper from Aqueous Solution by Yeast Papiliotrema huenov

Papiliotrema huenov was previously reported to be highly tolerant of a range of extremely toxic heavy metals. This study aimed to identify the potential of P. huenov to remove manganese and copper from aqueous solution. Physical conditions which affect removal of Mn(II) and Cu(II) were determined. Optimal temperature for adsorption of both metal ions was 30°C, and optimal pH for maximum uptake of Mn(II) and Cu(II) were 5 and 6, respectively. Under these conditions, living cells of P. huenov accumulated up to 75.58% of 110 mg/ L Mn(II) and 70.5% of 128 mg/L Cu(II) over 120 h, whereas, the removal efficiency of metal ions by dead cells over 1 h was 60.3% and 56.5%, respectively. These results indicate that living cells are more effective than dead biomass for bioremediation, but that greater time is required. The experimental data extends the potential use of P. huenov in biosorption and bioaccumulation of toxic heavy metals to copper and manganese, two of the most common industrial contaminants.

Some remarks on lymph node dissection and recovering of gastrointestinal circulation after gastrectomy caused by cancer at B15 department of Military Central Hospital N.108

Background: Gastric cancer is a common disease in the world. For treatment, gastrectomy is still considered as the first choice. However, recovering of postoperative gastrointestinal circulation remains a controversial issue. Objectives: To assess the early results of 2 methods as gastroduodenostomy (Billroth I type) and gastrojejunostomy (Billroth type II) in recovering of gastrointestinal circulation. Subjects and method: A descriptive, retrospective study was conducted on 98 patients (61 males, 37 females, mean aged 48.1\xb112.7), were confirmed diagnosed with gastric cancer, treated in Military Central Hospital N.108 from May, 2001 to December, 2005. Results: Tumor positions were seen in 1/3 lower and 1/3 middle of gastric organ (59.2% and 40.8%, respective). There was no significant difference for invasive level of tumor between 2 groups (P>0.05). 62.2% patients with invasive level of tumor in stage of T4 in both 2 groups. Generally, the lesion between 2 forms of ulcer and rough differed significantly. The patients with and without metastatic lymph nodes were 57 and 41 patients, respective. All of patients were conducted with lymph node dissection at the stage of DIII-DIV. The difference between 2 groups for surgical time was no statistic significant. Conclusion: Billroth type I method combined with lymph nodes dissection was a safe and feasible technique in treatment of gastric cancer.

Validation, an essential requirement of Good Manufacture Practice (GMP)

Validation is an essential requirement of GMP in current World. Requirement of GMP Validation of ASEAN: (1) Validation on manufacturing process. (2) Validation on quantitative method. 3. Validation on equipment. 4. Validation on hygienic standard and hygienic procedures. Results: (1) Guarantee manufacture to have a products, which respond regulated quality. (2) Respond regulated requirement of decree