第1个回答 2010-06-10
英文摘要是文章中文摘要的翻译，都不知道你的中文摘要是什么怎么给英文啊？还是你想随便要一篇？下面是我随便给你拉过来的
Abstract ：In this study, flavonoids were extracted from pomelo peel by ultrasonic extraction method using 70% ethanol as the
solvent. The optimum extracting parameters were investigated with quadratic rotation combination design. The mathematical
model including the rate of flavonoids extraction, ultrasonic power, ultrasonic time and the ratio of material to liquid was established.
Scavenging effects of pomelo peel flavonoids on superoxide anion, DPPH, and hydroxyl radical were studied. The results showed
that ultrasonic power, ultrasonic time and the ratio of material to liquid have significantly effects on the yield of pomelo peel
flavonoids, and the regression quadratic equation is Y=0.5087+0.0311X1 － 0.0253X2 － 0.0289X3 +0.0498X1 － 0.0238X1X3+
0.0395X2 + 0.022X2X3 + 0.0233X3, and the optimal conditions are attained through the regression equation as following: ultrasonic
power 1250 W, ultrasonic time 10 min and the ratio of material to liquid 1:30 (g/ml). The extraction rate of flavonoids from pomelo
peel is 0.734% through experiment and the mathematical model provids a good fit. Moreover, antioxidation experiments showed
that flavonoids from pomelo peel have very strong scavenging capabilities for superoxide anion and DPPH free radical, their EC50
values are 0.0906 mg/ml and 0.0161 mg/ml respectively, and are approximately 1.9 times and 3.3 times as much as that of vitamin
C respectively. The scavenging capability of pomelo peel flavonoids for hydroxyl radical is weaker than that of vitamin C, and
its EC50 is 0.5649 mg/ml, 15.5 times as much as that of vitamin C.
第2个回答 2010-06-10
Abstract: A mitotic inhibitor is a type of drug derived from natural substances such as plant alkaloids and primarily used in cancer treatment and certain types of cancer research including cytogenetics. Cancer cells are able to grow and eventually metastasize through continuous mitotic division. Generally speaking, mitotic inhibitors prevent cells from undergoing mitosis by disrupting microtubule polymerization, thus preventing cancerous growth. Mitotic inhibitors work by interfering with and halting mitosis (usually during the M phase of the cell cycle), so that the cell will no longer divide. Tubulin, a necessary protein for mitosis to occur, is suppressed by the mitotic inhibitor, preventing mitosis altogether. Paclitaxel, also named Taxol, is one kind of mitotic inhibitors. Include the background information and introduction of Taxol, in this article, author mainly discusses about the clinic useful scale pharmaceutical produce Taxol, as the source, materials, equipments, techniques, process and steps of production.
第3个回答 2010-06-10
什么摘要啊？是翻译么？中文内容在哪儿啊？给我留言吧本回答被提问者采纳