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Influences of petroleum on accumulation of copper and cadmium in the polychaete Nereis diversicolor

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Journal of Environmental Sciences 2006年第1期18卷 109-114页

作者： SUN fu-hong ZHOU Qi-xing ZHANG qian-ru Key Laboratory of Terrestrial Ecological Process Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China College of Environmental Sciences and Engineering Nankai University Tianjin 300071 China

Using the exposure simulation experiment, the action of petroleum affecting the accumulation of the trace metals including copper （Cu） and cadmium （Cd） in littoral polychaete Nereis diversicolor collected from the Shuangtaizi Estuary in Liaoning Province, China was examined. The results showed that there was a markedly non-linear relationship between the accumulation of Cu in worms and the experimental concentration of Cu in exposure solutions when the concentration of petroleum remained at 0, 100, and 220 μl/L, respectively. However, significantly non-linear relationship for worms exposed to Cd was observed only when the concentration of added petroleum was 0 and 220 μl/L. The accumulation of Cu in worms did not differ significantly among the three different levels of petroleum concentrations combined with various concentrations of Cu. So was the accumulation of Cd in worms （p〉0.05）. However, the addition of petroleum in exposure solutions brought about an increase in the accumulation of Cu in Nereis diversicolor, in comparison with single Cu pollution. On the other hand, when the concentration of added petroleum remained at 100 μl/L, the accumulation of Cd in worms was lower than that in worms exposed to various concentrations of only cadmium. However, the worms exposed to Cd and petroleum 220 μl/L did not show obvious and identical increase in the accumulation of Cd, compared with single Cd exposure. The accumulation of both Cu and Cd in worms did not increase significantly with the increases in concentrations of Cu or Cd in exposure solutions combined with petroleum （0, 100, and 220μl/L） under the experimental conditions. Although Nereis diversicolor is exposed to very high Cu and Cd in exposure solutions, accumulation and detoxification mechanisms are sufficient to cope with the extra metal influx in order to survive.

关键词： Nereis diversicolor copper cadmium petroleum combined pollution

The Role of Autophagy during Development of the Oomycete Pathogen Phytophthora infestans

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Journal of Genetics and Genomics 2014年第4期41卷 225-228页

作者： qian Luo fu-Xin wang Nai-Qin Zhong Hai-Yun wang Gui-Xian Xia Institute of Microbiology Chinese Academy of Sciences State Key Laboratory of Plant Genomics University of Chinese Academy of Sciences

Phytophthora infestans is a highly destructive plant path- ogen that causes late blight disease in plants such as potato and tomato （Fry and Goodwin, 1997）. As a typical oomycete, the primary infective propagule of P. infestans is the sporangium, which can either germinate directly or release biflagellate zoospores that encyst and germinate on the host subsequently （Grenville-Briggs et al., 2005）. Due to abundant formation of the sporangia and prolific sporulation, P. infestans can spread quickly in the host tissues and cause extensive necrosis of the infected plants （Kamoun and Smart, 2005）.

关键词： The Role of Autophagy during Development of the Oomycete Pathogen Phytophthora infestans

A novel miR167a-OsARF6-OsAUX3 module regulates grain length and weight in rice

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Molecular Plant 2021年第10期14卷 1683-1698页

作者： Jiyue Qiao Hongzhen Jiang Yuqing Lin Lianguang Shang Mei wang Dongming Li Xiangdong fu Markus Geisler Yanhua Qi Zhenyu Gao qian qian Key Laboratory of Herbage&Endemic Crop Biology of Ministry of Education Inner Mongolia Key Laboratory of Herbage&Endemic Crop BiotechnologySchool of Life SciencesInner Mongolia UniversityHohhot 010000China State Key Laboratory of Plant Physiology and Biochemistry College of Life SciencesZhejiang UniversityHangzhou 310058China State Key Laboratory of Rice Biology China National Rice Research InstituteChinese Academy of Agricultural SciencesHangzhou 310006China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignUniversity of Chinese Academy of Sciences100049China Department of Biology University of FribourgRue Albert-Gockel 3CH-1700 FribourgSwitzerland

Grain size is one of the most important factors that control rice yield,as it is associated with grain weight(GW).To date,dozens of rice genes that regulate grain size have been isolated;however,the regulatory mechanism underlying GW control is not fully ***,the quantitative trait locus qGL5 for grain length(GL)and GW was identified in recombinant inbred lines of 9311 and Nipponbare(NPB)and fine mapped to a candidate gene,*** variations between 9311 and NPB in the OsAUX3 promoter and loss of function of OsAUX3 led to higher GL and *** sequencing,gene expression quantification,dual-luciferase reporter assays,chromatin immunoprecipitation-quantitative PCR,and yeast one-hybrid assays demonstrated that OsARF6 is an upstream transcription factor regulating the expression of ***6 binds directly to the auxin response elements of the OsAUX3 promoter,covering a single-nucleotide polymorphism site between 9311 and NPB/Dongjin/Hwayoung,and thereby controls GL by altering longitudinal expansion and auxin distribution/content in glume ***,we showed that miR167a positively regulate GL and GW by directing OsARF6 mRNA *** together,our study reveals that a novel miR167a-OsARF6-OsAUX3 module regulates GL and GW in rice,providing a potential target for the improvement of rice yield.

关键词： grain length grain weight miR167a OsAUX3 OsARF6 rice

LAPLACE TRANSFORMS FOR ANALYTIC fuNCTIONS IN TUBULAR DOMAINS

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Acta Mathematica Scientia 2021年第6期41卷 1938-1948页

作者： Guantie DENG qian fu Hui CAO Laboratory of Mathematics and Complex Systems(Ministry of Education of China) School of Mathematical SciencesBeijing Normal UniversityBeijing100875China

Assume that 0functions F in the tubular domains R^(n)+iB such that for any compact set K⊂B,‖ y →‖x ... 详细信息

Assume that 0functions F in the tubular domains R^(n)+iB such that for any compact set K⊂B,‖ y →‖x →F(x+iy)‖Lp(R^(n))‖ L(K)function f∈L(R^(n)).

关键词： Laplace transforms Fourier transform tubular domain regular cone

Mechanical property of cylindrical sandwich shell with gradient core of entangled wire mesh

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Defence Technology（防务技术） 2024年第1期31卷 510-522页

作者： Xin Xue Chao Zheng fu-qiang Lai Xue-qian Wu Institute of Metal-rubber&Vibration Noise School of Mechanical Engineering and AutomationFuzhou UniversityFuzhou350116China fujian Metallurgical Industry Design Institute Fuzhou350116China

To explore the wide-frequency damping and vibration-attenuation performances in the application of aerospace components,the cylindrical sandwich shell structure with a gradient core of entangled wire mesh was proposed in this ***,the gradient cores of entangled wire mesh in the axial and radial directions were prepared by using an in-house Numerical Control weaving machine,and the metallurgical connection between skin sheets and the gradient core was performed using vacuum ***,to investigate the mechanical properties of cylindrical sandwich shells with axial or radial gradient cores,quasi-static and dynamic mechanical experiments were carried *** primary evaluations of mechanical properties include secant stiffness,natural frequency,Specific Energy Absorption(SEA),vibration acceleration level,and so *** results suggest that the vibration-attenuation performance of the sandwich shell is remarkable when the high-density core layer is at the end of the shell or abuts the inner *** axial gradient material has almost no influence on the vibration frequencies of the shell,whereas the vibration frequencies increase dramatically when the high-density core layer approaches the ***,compared to the conventional sandwich shells,the proposed functional grading cylindrical sandwich shell exhibits more potential in mass reduction,stiffness designing,and energy dissipation.

关键词： Entangled wire mesh Gradient cylindrical sandwich shell Vacuum brazing Secant stiffness Damping

Controlled Synthesis of Dental Enamel-like Hydroxyapatite Whiskers via Hydrothermal Homogeneous Precipitation

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Journal of Harbin Institute of Technology(New Series) 2013年第6期20卷 77-83页

作者： Wen-Xu Li Wen Yang qian Yu De-Zhen Yu fu-Ping wang Dept. of Chemistry Harbin Institute of Technology School of Chemical Engineering & Technology Harbin Institute of Technology School of Materials Science & Engineering Harbin Institute of Technology

Dental enamel-like hydroxyapatite whiskers with high crystallinity and homogeneous morphology were synthesized by a hydrothermal homogeneous precipitation *** composition,crystallinity and morphology of prepared hydroxyapatite whiskers were characterized by Ⅹ-ray diffraction and scanning electron *** effects of urea and sorbitol on their morphology and composition were *** and well crystallized enamel-like hydroxyapatite whiskers with 1.17±0.08 μm in length and 84± 14 nm in width were obtained at 0.80 mol · L-1 urea and 0.26 mol · L-1 *** hydroxyapatite whiskers may be close to nature hydroxyapatite dental enamel in terms of the morphology and composition,suggesting that they could have potential application as dental restorative materials in the field of stomatology.

关键词： hydrothermal homogeneous precipitation dental enamel-like urea sorbitolCLC number:TB321 Document code:AArticle ID:1005-9113(2013)06-0077-07

Rapid Deformation Calculation for Large Reflector Antennas:A Surrogate Model Method

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Research in Astronomy and Astrophysics 2023年第1期23卷 4-17页

作者： Zi-Han Zhang qian Ye Li fu Jin-Qing wang Meng Guo-Xiang Zhi-qiang Shen School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China

The surface accuracy of the large-aperture reflector antenna has a significant influence on the observation *** researchers have focused on using the finite element(FE)simulation to study the effect of gravity and heat on the deformation distribution of the main ***,the temperature distribution of the antenna is challenging to obtain,and it takes a long time for the FE simulation to carry out FE modeling and *** address these limitations,this study presents a surrogate model based on Extreme Gradient Boosting(XGBoost)and deep Convolutional Neural Network(CNN)to get the deformation distribution of the main reflector *** the design of the surrogate model,using the XGBoost algorithm and sparse sampling to solve the difficulty of obtaining the entire temperature distribution is first proposed,and then a deep CNN is developed for estimating *** on the effect of dynamic loads on the antenna structure,a diverse data set is generated to train and test the surrogate *** results show that the surrogate model reduces the calculating time dramatically and can obtain the indistinguishable deformation compared to the FE *** technique provides a valuable tool for temperature and deformation calculation of large-aperture antennas.

关键词： telescopes-methods analytical-methods numerical-methods data analysis

Rapid Communication:Preliminary study on the freeze-drying of human bone marrow-derived mesenchymal stem cells

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第11期11卷 889-894页

作者： Shao-zhi ZHANG Huan qian Zhen wang Ju-li FAN qian ZHOU Guang-ming CHEN Rui LI Shan fu Jie SUN Refrigeration and Cryogenic Engineering lnstitute Zhejiang University Hangzhou 310027 China Bone Marrow Transplantation Center the First Affiliate Hospital School of Medicine Zhejiang University Hangzhou 310003 China

Long-term preservation and easy transportation of human bone marrow-derived mesenchymal stem cells(hBM-MSCs) will facilitate their application in medical treatment and bioengineering.A pilot study on the freeze-drying of hBM-MSCs was carried ***-MSCs were loaded with *** glass transition temperature of the freeze-drying suspension was measured to provide information for the cooling and primary drying *** freeze-drying,various rehydration processes were *** highest recovery rate of hBM-MSCs was(69.33± 13.08) %.Possible methods to improve freeze-drying outcomes are *** conclusion,the present study has laid a foundation for the freeze-drying hBM-MSCs.

关键词： Human bone marrow-derived mesenchymal stem cells (hBM-MSCs) Freeze-drying Trehalose Rehydration

Construction and characterization of a bacterial artificial chromosome library of rice 5460F

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Chinese Science Bulletin 1999年第17期44卷 1587-1592页

作者： Jianmin fu Xueping Qu Chuanyou Li Jianhang Jia Demin Jin qian wang Rencui Yang Bin wang Chinese Acad Sci Inst Genet Beijing 100101 Peoples R China fujian Agr Univ Fuzhou 350002 Peoples R China

Thermo-sensitive genie male sterile (TGMS) rice has a number of desirable characteristics for hybrid rice production. Many studies have demonstrated that the sterility of TGMS rice is controlled by a single recessive gene. It has been mapped for the first time on chromosome 8 and named tms1. Several AFLP markers which tightly linked to the tms1 gene have been identified recently. In order to develop a detailed physical map of the tms1 gene-encompassing region and finally clone the tms1 gene, a bacterial artificial chromosome (BAC)

关键词： rice thermo-sensitive genie male sterile bacterial artificial chromosome.