Assessment of ship manoeuvrability by using a coupling between a nonlinear transient manoeuvring model and mathematical programming techniques

In this paper, a numerical method based on a coupling between a mathematical model of nonlinear transient ship manoeuvring motion in the horizontal plane and Mathematical Programming （MP） techniques is proposed. The aim of the proposed procedure is an efficient estimation of optimal ship hydrodynamic parameters in a dynamic model at the early design stage. The proposed procedure has been validated through turning circle and zigzag manoeuvres based on experimental data of sea trials of the 190 000- dwt oil tanker. Comparisons between experimental and computed data show a good agreement of overall tendency in manoeuvring traiectories.

Vero细胞传代过程中致瘤性的检测

目的为生物制品生产及研究用Vero细胞体系传代过程中的遗传安全性评价提供实验数据。方法对Vero细胞进行传代与冻存，并对不同代次Vero细胞进行体外与体内致瘤性检测，同时对不同代次Ver6细胞的蛋白质表达进行差异性分析。结果Vero细胞传代至270代并建立了14个细胞冻存库；不同代次Vero细胞体外与体内致瘤性检测结果均为阴性；200代以上的Vero细胞蛋白质表达水平有所变化。结论Vero细胞传代过程中虽然体外与体内致瘤性检测结果为阴性，但蛋白质组学分析有差异性蛋白表达，这为Vero细胞传代过程中的遗传安全性评价提供了实验参考。