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Pelagodictyon Clarke,a newly recorded nanodiatom genus for china

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Journal of Systematics and Evolution 2009年第2期47卷 179-182页

作者： 1,2Yang LI 2Ya-Hui GAO 1(key laboratory of Ecology and Environmental Science in Guangdong Higher Education,College of Life Science,South china Normal university,Guang-zhou 510631,china) 2(School of Life sciences,xiamen university,xiamen 361005,china) ( School of Life sciences Xiamen University Xiamen 361005 China )

Marine nanoplanktonic diatoms have been frequently either underestimated or overlooked in phyto-plankton investigations due to their small size(2-20 μm),which allows most of them to pass through a regular phytoplankton net of 70-μm pore *** nanoplanktonic diatom classification,water samples(each 2000 mL) were collected from several representative sea areas of Chinese coast from May 2002 to May *** Clarke was identified as a newly recorded nanodiatom genus for china under transmission electron microscope(TEM).This genus is characterized by the delicate structure of the valve *** striae are seen to be formed by ribs with cross-ribs(frets) and the intervening spaces are occupied by polygonal cribra situated much close to the exterior face of the *** one species was found,i.e.,*** *** description of the taxonomic characteristics with TEM photographs of this species and its ecological habitat and distribution are given in this *** characteristics comparisons among several resembling genera were discussed.

关键词： china fret nanodiatom new record Pelagodictyon Stephanodiscaceae

Immunomagnetic assay combined with CdSe/ZnS amplification of chemiluminescence for the detection of abscisic acid

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Science china Chemistry 2011年第8期54卷 1298-1303页

作者： ZHOU GuoHua, WANG Ping, YUAN Ju, QIU Ting & HE ZhiKe key laboratory of analytical Chemistry for Biology and Medicine, Ministry of Education College of Chemistry and Molecular sciences, Wuhan university, Wuhan 430072, china 1. key laboratory of analytical Chemistry for Biology and Medicine Ministry of Education College of Chemistry and Molecular sciences Wuhan University Wuhan 430072 China

Abscisic acid (ABA) is an important plant hormone. It plays a key role in regulating plant responses to abiotic stress and in controlling seed germination, growth, and stomatal aperture. A rapid, sensitive analytical method for the ABA detection is urgently required for further investigation of ABA signaling. In this work, an immunomagnetic assay combined with CdSe/ZnS amplification of chemiluminescence has been developed for the detection of ABA. The result could be read out in 30 min at least, with the simplified procedure of immunomagnetic assay. Under the optimized condition, a linear range from 1 pM to 10 nM was obtained. An unexpected result induced by the dose hook effect was discussed. This method provided the high selectivity for ABA over other components that might be contained in real samples.

关键词： abscisic acid immunomagnetic assay chemiluminescence CdSe/ZnS

The effect pathway of retinoic acid through regulation of retinoic acid receptor α in gastric cancer cells

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World Journal of Gastroenterology 2001年第5期7卷 662-666页

作者： Su Liu Qiao Wu Zheng-Ming Chen Wen-Jin Su The key laboratory of Ministry of Education for Cell Biology and Tumor Cell Engineering,The School of Life sciences,xiamen university,xiamen 361005,Fujian Province,china Su Liu Qiao Wu Zheng-Ming Chen Wen-Jin Su The Key Laboratory of Ministry of Education for Cell Biology and Tumor Cell Engineering The School of Life Sciences Xiamen University Xiamen 361005 Fujian Province China

AIM To evaluate the role of RARα gone in mediating the growth inhibitory effect of all-trans retinoic acid(ATRA) on gastric cancer cells. METHODS The expression levels of retinoic acid receptors(PARs)in gastric cancer cells were detected by Northern *** transfection and chlorophenicol acetyl transferase(CAT)assay were used to show the transcriptional activity of β retinoic acid response element (βPARE)and AP-1 *** growth inhibition was determined by MTT assay and anchorage-independent growth assay,*** transfection was performed by the method of Lipofectamine,and the cells were screened by G418. RESULTS ATRA could induce expression level of RARα in MGC80-3,BGC-823 and SGC-7901 cells obviously, resulting in growth inhibition of these cell *** sense RARα gone was transfected into MKN-45 cells that expressed rather low level of RARα and could not be induced by ATPA,the cell growth was inhibited by ATPA *** contrast,when antisense RARα gone was transfected into BGC-823 cells,a little inhibitory effect by ATPA was seen,compared with the parallel BGC-823 *** transient transfection assay,ATPA effectively induced transcriptional activity of βRARE in MGC80-3, BGC-823,SGC-7902 and MKN/RARα cell lines,but not in MKN-45 and BGC/aRARα cell *** results were observed in measuring anti-AP-1 activity by ATPA in these cancer cell lines. CONCLUSION ATRA inhibits the growth of gastric cancer cells by up-regulating the level of RARα; RARα is the major mediator of ATRA action in gastric cancer cells;and adequate level of RARα is required for ATRA effect on gastric cancer cells.

关键词： receptor retinoic acid/pharmacology stomach neoplasm/drug therapy stomach neoplasm/pathology

Configural processing of different topologically structured figures:an ERP Study

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Science china(Life sciences) 2009年第12期52卷 1198-1204页

作者： ZHANG JunJun1, ZHU WeiNa2,3,4, DING XiaoJun1, ZHOU ChangLe1, HU XinTian2,3 & MA YuanYe2,3· 1 Lab of Mind, Art and Computation, xiamen university, xiamen 361005, china 2 Kunming Institute of Zoology, Chinese Academy of sciences, Kunming 650223, china 3 State key laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of sciences, Beijing 1001001, china 4 School of Information Science, Yunnan university, Kunming 650223, china 1. Lab of Mind Art and Computation Xiamen University Xiamen 361005 China 2. Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650223 China 3. State key laboratory of Brain and Cognitive Science Institute of Biophysics Chinese Academy of Sciences Beijing 1001001 China 4. School of Information Science Yunnan University Kunming 650223 China

According to Chen's theory, topological differences are perceived faster than feature differences in early visual perception. We hypothesized that topological perception is caused by the sensitivity in discriminating figures with and without "holes" . An ERP experiment was conducted utilizing a passive paradigm to investigate the differences in perceiving figures with "hole" and with "no-hole" . The results showed differences in N170 components between figures with "holes" and with "no-holes" . The inversion of the "hole" could influence the latency of N170, but the inversion of the "no-hole" could not, which indicated that global features are processed first in the "hole" perception whilst local features are given priority to the "no-hole" perception. This result was similar to studies concerning face and non-face objects, suggesting a configural processing of the "hole" .

关键词： visual evoked potential topological perception N170

An efficient method to obtain axenic culture of Alexandrtum tamarense----PSP-producing dinoflagellate

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An efficient method to obtain axenic culture of Alexandrtum ...

2006中国微生物学会第九次全国会员代表大会暨学术年会

作者： ZHENG TianLing, SU JianQiang, YANG XiaoRu, HONG HuaSheng School of Life sciences, MOE of key laboratory for Cell Biology and Tumor Cell Engineering, xiamen university, xiamen, Fujian, china, 361005 State key laboratory of Marine Environmental sciences, xiamen university, xiamen, Fujian, china, 361005

The fact that species of harmful algae maintained in laboratory harbor an complex bacterial flora increases the difficulties in the study on the mechanisms of bacteria-alga interaction. An efficient method to remove bacteria from a laboratory cultures of marine dinoflagellate Alexandrium tamarense was presented in this paper. The alga was subjected to repeated washing, lysozyme/SDS and antibiotics with a

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Post-encode Multi-dye-doped Silica Nanoparticles by Molecule-selective Photobleaching

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Post-encode Multi-dye-doped Silica Nanoparticles by Molecule...

第三十五届国际光谱会议

作者： C.L.Wu Y.B.Zhao~* Department of Chemistry and the key laboratory of analytical sciences of the Ministry of Education,College of Chemistry and Chemical Engineering,xiamen university,xiamen 361005,china

Rational design and preparation of multicolor nano-pmbes have recently become an area of rapidly expanding interest due to their potential application in multiplexed bioassays. Dye-doped silica nanoparticles own intense fluorescence signal and highly improved photostability make them ideal fluorescent nano-probes for biological ***,

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Distribution and germination of viable diatom resting stage cells in sediments of the East china Sea

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Acta Oceanologica Sinica 2010年第5期29卷 121-128页

作者： ZHANG Yuyu LU Songhui ZHANG Chuansong GAO Yahui key laboratory of Ministry of Education for Coast and Wetland Ecosystems School of Life Sciences Xiamen University Xiamen 361005 China Research Center for Harmful Algae and Aquatic Environment Jinan University Guangzhou 510632 China College of Life Science South China Normal University Guangzhou 510631 China College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266100 China

The abundance and temporal patterns of viable diatom resting stage cells in sediments of the East china Sea in 2006 have been *** abundance of viable resting stages was enumerated with the most probable number（MPN） ***,25 diatom species（including varieties） belonging to 16 genera were *** resting stage cells were common,on the order of 103 to 106 cells/g dry *** abundant taxa included Skeletonema marina,***,Chaetoceros curvisetus and Thalassiosira spp.,with Skeletonema accounting for 83.3% of the *** effects of temperature（10,15,20,25 ℃）,salinity（20,25,30,35 psu） and light intensity（0,300,4 000,8 000 lux） on the germination of resting stages in sediment samples were also *** results showed that light intensity had a significant positive effect on the germination of diatom resting stage cells（p 〈0.01） and that diatoms could not germinate in *** and salinity had no noticeable effects on the *** present study suggests that there are abundant diatom resting cells in sediments of the East china Sea,which could serve as a ＂seed bank＂ in the phytoplankton population succession and contribute to the initiation of algal blooms.

关键词： diatom germination MPN resting stages seed bank sediment

DGGE analysis of phenanthrene-degrading bacterial community and characterization of degrader Sphingomonas sp. strain H

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DGGE analysis of phenanthrene-degrading bacterial community ...

2006中国微生物学会第九次全国会员代表大会暨学术年会

作者： Huang Xu , Tian Yun, Luo Yuanrong, Cao Xiaoxing, Zheng Tianling School of Life sciences, xiamen university, xiamen, 361005, china State key laboratory of Marine Environmental Science, xiamen university, xiamen, 361005

Polycyclic aromatic hydrocarbons (PAHs), widely distributed in the marine environment, have attracted more intensive attention because they are carcinogenic, teratogenic and mutagenic to animals and human being potentially. It is an efficient and economical way to recover PAHs contamination by microbial remediation. In this study, sea water samples were collected from Botan oil port in xiamen for the isolation of degrading bacteria under the pressure of high concentration phenanthrene.

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Study on interaction between macrocell and microcell in the early corrosion process of reinforcing steel in concrete

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Science china(Technological sciences) 2010年第5期53卷 1285-1289页

作者： LI LanQiang1,DONG ShiGang1,WANG Wei2,HU RongGang1,DU RongGui1,LIN ChangJian1,ZHUO XiangDong1 & WANG Jia2 1 State key laboratory of Physical Chemistry of Solid Surfaces,Department of Chemistry,College of Chemistry and Chemical Engineering,xiamen university,xiamen 361005,china 2 College of Chemistry and Chemical Engineering,Ocean university of china,Qingdao 266100,china 1. State key laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China2. College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266100 China

An array electrode technique was developed as a novel electrochemical method for studying the interaction between macrocell and microcell in the early corrosion process of reinforcing steel in cement *** corrosion potential and galvanic current of macrocell corrosion of the reinforcing steel in cement mortar were imaged by the array electrode technique during the corrosion initiation and *** was certified that the corrosion macrocell current is closely related with the difference of corrosion potential between the anodic and cathodic *** corrosion macrocell and microcell always exist during the corrosion *** interaction of corrosion macrocell and corrosion microcell of steel in concrete was directly sensed by the array electrode for the first time,and was discussed in terms of corrosion electrochemistry.

关键词： reinforcing steel in concrete array electrode macrocell microcell