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Molecularly Imprinted Polymer for Solid-Phase Extraction of Ecteinascidin 743 from Sea Squirt 被引量:1
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作者 田明磊 李圣男 卢敬吴 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2012年第1期43-46,共4页
Ecteinascidin 743 from sea squirt is one of the most original anti-tumoral activity compounds, as proven by the Natural Cancer Institute. Ecteinascidin 743 could be obtained with traditional liquid extraction, but it ... Ecteinascidin 743 from sea squirt is one of the most original anti-tumoral activity compounds, as proven by the Natural Cancer Institute. Ecteinascidin 743 could be obtained with traditional liquid extraction, but it should be purified and separated from the extract. A molecularly imprinted solid-phase extraction procedure was developed for the selective separation. Ecteinascidin 743 was used as the template and the polymer was synthesized in a methanol environment. Water and n-hexane as the washing solvents can eliminate most of the interference. Good linearity and low relative standard deviations (less than 4.39%)justify its continuing development. 展开更多
关键词 ecteinascidin 743 molecular imprinted polymer solid-phase extraction sea squirt
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基于改进SSA优化SVM的滚动轴承故障诊断方法 被引量:1
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作者 唐浩漾 王亦凡 +1 位作者 秦波 李哲 《计算机技术与发展》 2024年第5期175-182,共8页
针对支持向量机分类模型在滚动轴承故障诊断中准确率较低的问题,提出了一种基于改进麻雀搜索算法(Sparrow Search Algorithm,SSA)优化支持向量机(Support Vector Machine,SVM)的滚动轴承故障诊断方法。首先,利用小波变换对滚动轴承信号... 针对支持向量机分类模型在滚动轴承故障诊断中准确率较低的问题,提出了一种基于改进麻雀搜索算法(Sparrow Search Algorithm,SSA)优化支持向量机(Support Vector Machine,SVM)的滚动轴承故障诊断方法。首先,利用小波变换对滚动轴承信号进行去噪处理,将去噪后的信号进行小波包分解以提取对应故障特征;其次,引入改进樽海鞘觅食机制对麻雀搜索算法进行优化,防止算法向原点收敛,并加入自适应莱维飞行策略和精英反向系数,增强算法跳出局部最优的能力;最后,采用改进后的麻雀算法优化支持向量机参数,构建改进SSA优化SVM的故障诊断模型,提高故障分类效果。应用美国西储大学提供的轴承数据集进行仿真实验,实验结果表明,所提方法的故障诊断效果好于PSO-SVM、GWO-SVM、SSA-SVM、tSSA-SVM等常规模型,能有效提取滚动轴承故障特征,具有较高的故障诊断精度。 展开更多
关键词 故障诊断 滚动轴承 支持向量机 改进麻雀搜索算法 樽海鞘觅食机制
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中国玻璃海鞘属一新纪录种——萨氏海鞘Ciona savignyi 被引量:6
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作者 马洪明 张俊丽 +3 位作者 姚子昂 刘利平 金松君 相建海 《水生生物学报》 CAS CSCD 北大核心 2010年第5期1056-1059,共4页
海鞘(尾索动物亚门Urochordata,海鞘纲Ascidiacea)是与脊椎动物亲缘关系最近的分支,是研究动物进化和发育的重要材料。其中玻璃海鞘(Ciona intestinalis)在世界范围内分布广泛,材料容易获得,
关键词 海鞘 萨氏海鞘 玻璃海鞘 细胞色素B 分类
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韩国的真海鞘养殖 被引量:6
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作者 李文姬 《水产科学》 CAS 北大核心 2004年第7期27-30,共4页
关键词 真海鞘 养殖技术 韩国
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From waste of marine culture to natural patch in cardiac tissue engineering 被引量:6
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作者 Yutong He Honghao Hou +4 位作者 Shuqi Wang Rurong Lin Leyu Wang Lei Yu Xiaozhong Qiu 《Bioactive Materials》 SCIE 2021年第7期2000-2010,共11页
Sea squirt,as a highly invasive species and main biofouling source in marine aquaculture,has seriously threatened the biodiversity and aquaculture economy.On the other hand,a conductive biomaterial with excellent bioc... Sea squirt,as a highly invasive species and main biofouling source in marine aquaculture,has seriously threatened the biodiversity and aquaculture economy.On the other hand,a conductive biomaterial with excellent biocompatibility,and appropriate mechanical property from renewable resources is urgently required for tissue engineering patches.To meet these targets,we presented a novel and robust strategy for sustainable development aiming at the marine pollution via recycling and upgrading the waste biomass-sea squirts and serving as a renewable resource for functional bio-scaffold patch in tissue engineering.We firstly demonstrated that the tunic cellulose derived natural self-conductive scaffolds successfully served as functional cardiac patches,which significantly promote the maturation and spontaneous contraction of cardiomyocytes both in vitro and enhance cardiac function of MI rats in vivo.We believe this novel,feasible and“Trash to Treasure”strategy to gain cardiac patches via recycling the waste biomass must be promising and beneficial for marine environmental bio-pollution issue and sustainable development considering the large-scale consumption potential for tissue engineering and other applications. 展开更多
关键词 sea squirts BIOFOULING CELLULOSE Cardiac tissue engineering Myocardial infarction
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