Performance optimization of property-improved biodiesel manufacturing process coupled with butanol extractive fermentation / 生物工程学报

The products concentrations in traditional acetone-butanol (AB) fermentation are too low that large amount of energy has to be consumed in the distillation and product recovery process. Aiming at direct utilization of the fermentation products, in this study, optimization of property-improved biodiesel manufacturing process coupled with AB extractive fermentation was conducted, under the condition of using the biodiesel originated from waste cooking oil as the extractant and high concentrated corn flour medium. The effect of biodiesel/broth volume ratio, waste supernatant recycle ratio, and electronic carrier addition on the major process performance index was carefully investigated. Under the optimized condition, the biodiesel quality was improved with the cetane value increased from 51.4 to 54.4; "actual butanol yield" reached to a level of 18%, and waste supernatant recycle ratio exceeded 50%. In this way, elimination of energy-consuming product recovery process and realization of "energy-saving & waste minimization" industrial production target advocated by the state government, could be potentially expected.

3D color power angiography in ovarian tumors and its relations hip to MVD, CD146 expression / 重庆医科大学学报

Objective:To evaluate the relationship between the blood flow,microvessel density(MVD)and expression of CD146 in ovarian tumor.Methods:Blood flow signals of ovarian carcinoma were preoperatively detected by three diamensions color power angiography(3D-CPA)in 46 patients.MVD,and expression of CD146 in tumor were assessed immunohistochemically.Results:Blood flow grade in ovarian cancer group was significantly higher than that in benign group.The expression of MVD in ovarian cancer group (42.71?8.40)was significantlyhigher than that in benign group(19.48?5.09)(P