摘要：
Based on complex ecosystem system, analyze sustainable urbanization from three aspects, development, sustainability and coordination, build three dimension urbanization comprehensive assessment model based on development, sustainability and coordination, appraise urbanization development from 2000 to 2007 in Xiamen by the model ,the result indicates, urbanization level from 2000 to 2007 in Xiamen is increasing, but the state is not sustainable in terms of sustainability and coordination, because the dual structure of urban and rural areas in Xiamen makes that resource environment development compare to society economy development, resource environment developed decreasingly, while society economy kept developing increasingly.
摘要：
先前的研究表明,神经元可通过其发放率、潜伏期及复杂的发放模式来传递感觉信息(Nelken et al.2005)。在猫、兔、豚鼠、大鼠多种动物的下丘所做的细胞外记录(Rees et al.1997),以及在体膜片钳和离体脑片记录(Bal et al.2002;Koch et al.2003;Peruzzi et al.2000;Tan et al.2007),均观察到神经元的不同发放模式,如何定型
会议论文集名称：
2010 4th International Conference on Bioinformatics and Biomedical Engineering. [v.1.1]
关键词：
BBP;MDA;DPC;Carbonyl;Hepatic cells
摘要：
In order to study the effect of butyl benzyl phthalatee (BBP) on hepatic cells of rat, hepatic cells of rat were exposed to different dose (5 μmol / L, 20 μmol / L, 80 μmol / L) of BBP in vitro for 1 hour. Thiobarbituric acid (TBA) method , KCl-SDS precipitation method and Dinitrophenylhydrazone (DNPH) colorimetric method were used to detect malondialdehyde (MDA) content, DPC coefficient changes and content, respectively. MDA levels in hepatic cells showed a dose-dependent enhancement after BBP exposure. Significant MDA content was observed in all groups compared to control group. The content of carbonyl was all increased in exposure groups, especially in the group of 5μmol / L. DPC coefficient presented a slight increase compared with the control group but no significant difference in the dose of 5 μmol / L and 20 μmol / L. When the concentration of BBP increased to 80 μmol / L, DPC coefficient increased, and there was a significant difference compared with the control group. The carbonyl content was significantly increased in the dose of 5μmol / L. These results suggest that BBP can cause liver damage in rats, and might have toxic effects on the human body.
会议论文集名称：
The 4th International Conference on Bioinformatics and Biomedical Engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)论文集
关键词：
Fe3O4;SCGE;MDA;SOD;Ccytotoxicity;HeLa cells
摘要：
In order to study the cytotoxicity effects of Nano-Fe3O4 Particles on HeLa Cells, 50 mu g/mL, 100 mu g/mL and 200 mu g/mL concentrations of Nano-Fe3O4 were exposed to HeLa cells, twelve hours later, single cell gel electrophoresis (SCGE) was used to detect HeLa cell DNA molecule damage, the content of the malondialdehyde (MDA) were determined by thiobarbiturie acid reactive substance method and the activity of super oxide dismutase (SOD) was determined by xanthine oxldase method. The results shown that under the 50 mu g/mL Nano-Fe3O4 exposure, compared with the control group, neither the tail moment nor the tail DNA% increased (P> 0.05), the increase content of MDA also not significant (P> 0.05), but the reduce activity of SOD is significant (P< 0.05); under the 100 mu g/mL and 200 mu g/mL Nano-Fe3O4 exposure, compared with the control group, the increase of tail moment and tail DNA% both significant (P< 0.05 or P< 0.01), the increase content of MDA also significant(P< 0.05 or P< 0.01), the reduce activity of SOD is significant (P< 0.01). The results suggest that Nano-Fe3O4 could induce the cytotoxicity on HeLa cells.
期刊：
2010 3rd International Conference on Advanced Computer Theory and Engineering(ICACTE),2010年6:V6-503-V6-505 ISSN：2154-7491
作者机构：
school of computer science, huazhong university of science and technology, Wuhan, China;school of mathematics and computer science, hubei university, Wuhan, China;[Wei Zhang] School of computer science, huazhong normal university, Wuhan, China;[Xia Wei] school of computer science, huazhong university of science and technology, Wuhan, China<&wdkj&>school of mathematics and computer science, hubei university, Wuhan, China
会议名称：
2010 3rd International Conference on Advanced Computer Theory and Engineering(2010年第三届先进计算机理论与工程国际会议 ICACTE 2010)
会议时间：
2010-08-20
会议地点：
成都
会议论文集名称：
2010 3rd International Conference on Advanced Computer Theory and Engineering(2010年第三届先进计算机理论与工程国际会议 ICACTE 2010)论文集
摘要：
Data streams are data in infinite, continuous, arriving at fast rate and in large amount. Histograms have been widely used to capture attribute value distribution statistics for query optimizers. Recently, histograms have also been considered as a way to produce quick approximate answers to decision support queries. We are interested in an efficient algorithm for choosing the bucket boundaries in a way that either minimizes the estimation error for a given amount of space (number of buckets), or, minimizes the space needed for a given upper bound on the error. In this paper, we present algorithms for computing optimal bucket boundaries is optimal than dynamic programming algorithm. We introduce the concept of moving average to compute SSE (Sum Squared Error). This algorithm can help to split the bucket, which result in more quickly generating the histogram and less storage. Through experiments, we show that the MPA algorithm is better than DPA algorithm.
摘要：
We investigated the vegetation of sphagnum mire at Erxianyan in Western Hubei Province and analyzed the species composition, association types, dominance and importance value of species. The results show that the species composition and association type of the mire is relatively rich. 111 species of plants, belonging to 85 genera of 51 families, were recorded. The mire vegetation can be divided into 11 associations. Among these, there are 7 Sphagnum-dominated associations. Sphagnum palustre and Juncus setchuensis appears in all of the 7 Sphagnum-dominated associations. The average dominance of Sphagnum in the plots is 90.70%. The importance value of Sphagnum is greater than that of other species in 77.78% sample plots. The results suggested that by human's interference the sphagnum mire at Erxianyan may be regressive succession in two paths: one is to be a community with single dominant species and exiguous species after drainage; the other is to be a weed community with abundant species but no dominant species by intensive interference.
