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| 1 | Spatial-temporal Characteristics of Land Subsidence Corresponding to Dynamic Groundwater Funnel in Beijing Municipality,China显示文摘Due to long-term over-exploitation of groundwater in Beijing Municipality,regional groundwater funnels have formed and land subsidence has been induced.By combining a groundwater monitoring network,GPS monitor-ing network data,radar satellite SAR data,GIS and other new technologies,a coupled process model based on the dy-namic variation of groundwater and the deformation response of land subsidence has been established.The dynamic variation of groundwater funnels and the land subsidence response process were analyzed systematically in Beijing.Study results indicate that current groundwater funnel areas are distributed mainly in the southwest of Shunyi District,the northeast of Chaoyang District and the northwest of Tongzhou District,with an average decline rate of groundwa-ter level of 2.66 m/yr and a maximum of 3.82 m/yr in the center of the funnels.Seasonal and interannual differences exist in the response model of land subsidence to groundwater funnels with uneven spatial and temporal distribution,where the maximum land subsidence rate was about-41.08 mm/yr and the area with a subsidence rate greater than 30 mm/yr was about 1637.29 km2.Although a consistency was revealed to exist between a groundwater funnel and the spatial distribution characteristics of the corresponding land subsidence funnel,this consistency was not perfect.The results showed that the response model of land subsidence to the dynamic variation of groundwater was more revealing when combining conventional technologies with InSAR,GIS,GPS,providing a new strategy for environmental and hydrogeological research and a scientific basis for regional land subsidence control. | CHEN Beibei GONG Huili LI Xiaojuan LEI Kunchao ZHANG Youquan LI Jiwei GU Zhaoqin DANG Yanan | 2011 | Chinese Geographical Science2011，21，6： | 13 |
| 2 | Biological Activity and Antibacterial Property of Nano-structured TiO_2 Coating Incorporated with Cu Prepared by Micro-arc Oxidation显示文摘Micro-arc oxidized Cu-incorporated TiO2 coatings(Cu—TiO2) were prepared in the Ca,P,Cu-containing electrolyte to obtain an implant material with superior biological activity and antibacterial property.The surface topography,phase,and element composition of the TiO2 and Cu—TiO2 coatings were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),and energy-dispersive X-ray spectrometry (EDS),respectively.Staphylococcus aureus(S.aureus) was selected to evaluate the antibacterial property of the Cu—TiO2 coatings,whereas osteoblastic MG63 cells were cultured on the coatings to investigate the biological activity.The obtained results demonstrated that Cu element was successfully incorporated into the porous nano-structured TiO2 coatings,which did not alter apparently the surface topography and phase composition of the coatings as compared to the Cu-free TiO2 coatings.Moreover,the antibacterial studies suggested that the Cu-incorporated TiO2 coatings could significantly inhibit the adhesion of S.aureus.In addition,the in vitro biological evaluation displayed that the adhesion,proliferation and differentiation of MG63 cells on the Cu-incorporated coatings were enhanced as compared to those on the Cu-free coatings and Ti plates.In conclusion,the innovative Cu-incorporated nano-structured TiO2 coatings on Ti substrate with excellent antibacterial property and biological activity are promising candidates for orthopedic implant. | Wei Zhu Zhenxiang Zhang Beibei Gu Junying Sun Lixian Zhu | 2013 | Journal of Materials Science & Technology2013，29，3： | 8 |
| 3 | Detection of geosmin and 2-methylisoborneol by liquid-liquid extraction-gas chromatograph mass spectrum (LLE-GCMS) and solid phase extraction-gas chromatograph mass spectrum (SPE-GCMS)显示文摘Two sample preparation methods were introduced and compared in this paper to establish a simple,quick and exact analysis of geosmin and 2-methylisoborneol.LC-18 column was employed in solid phase extraction(SPE),1.0 mL of hexane was adopted in liquid-liquid extraction(LLE),and the extracts were analyzed by gas chromatograph mass spectrum(GCMS)in selected ion mode.Mean recoveries of SPE were low for 2-methylisoborneol(2-MIB)and geosmin(GSM)with values below 50%.For LLE,the recoveries were satisfyingly above 50%for 2-MIB and 80%for GSM.Detection limits of the LLE method were as low as 1.0 ng/L for GSM and 5.0 ng/L for 2-MIB.A year-long investigation on odor chemicals of drinking water in Shanghai demonstrated that in the summer,there was a serious odor problem induced by a high concentration of 2-MIB.The highest concentration of 152.82 ng/L appeared in July in raw water,while GSM flocculation was minimal with concentrations below odor threshold. | MA Xiaoyan GAO Naiyun CHEN Beibei LI Qingsong ZHANG Qiaoli GU Guofen | 2007 | Frontiers of Environmental Science & Engineering2007，1，3： | 7 |
| 4 | sLe^(x) expression in invasive micropapillary breast carcinoma is associated with poor prognosis and can be combined with MUC1/EMA as a supplementary diagnostic indicator显示文摘Objective: Mucin 1(MUC1/EMA) and sialyl Lewis X(sLe^(x)) indicate polarity reversal in invasive micropapillary carcinoma(IMPC). The purpose of this study was to evaluate the expression of MUC1/EMA and sLe^(x) and to assess their diagnostic and prognostic value in patients with IMPC.Methods: The expression of sLe^(x) and MUC1/EMA in 100 patients with IMPC and a control group of 89 patients with invasive ductal carcinoma not otherwise specified(IDC-NOS) were analyzed with IHC. Fresh tumor tissues were collected from patients with IMPC or IDC-NOS for primary culture and immunofluorescence analysis.Results: The rate of nodal metastasis was higher in patients with IMPC than those with IDC-NOS, and IMPC cells tended to express more sLe^(x) and MUC1/EMA in the cytomembranes(the stroma-facing surfaces of the micropapillary clusters) than IDC-NOS cells. In IMPC, high cytomembrane expression of sLe^(x), but not MUC1/EMA, indicated poor prognosis. In addition, among the 100 patients with IMPC, 10 patients had sLe^(x)+/EMA-expression patterns, and 8 patients had sLe^(x)-/EMA+ expression patterns. The primary IMPC cells were suspended, non-adherent tumor cell clusters, whereas the primary IDC cells were adherent tumor cells. Immunofluorescence analysis showed that MUC1/EMA and sLe^(x) were co-expressed on the cytomembranes in IMPC cell clusters and in the cytoplasm in IDC-NOS cells.Conclusions: sLe^(x) can be used as a prognostic indicator and can be combined with MUC1/EMA as a complementary diagnostic indicator to avoid missed IMPC diagnosis. | Yawen Song Hui Sun Kailiang Wu Jianke Lyu Jingyue Zhang Feng Gu Yongjie Ma Beibei Shen Chijuan Wang Xiaojiao Chen Jing Xu Weidong Li Fangfang Liu Li Fu | 2021 | Cancer Biology & Medicine2021，18，2： | 7 |
| 5 | Self-organized phase-transition lithography for all-inorganic photonic textures显示文摘Realizing general processing applicable to various materials by one basic tool has long been considered a distant dream.Fortunately,ultrafast laser-matter interaction has emerged as a highly universal platform with unprecedented optical phenomena and provided implementation paths for advanced manufacturing with novel functionalities.Here,we report the establishment of a three-dimensional(3D)focal-area interference field actively induced by a single ultrafast laser in transparent dielectrics.Relying on this,we demonstrate a radically new approach of self-organized phase-transition lithography(SOPTL)to achieve super-resolution construction of embedded all-inorganic photonic textures with extremely high efficiency.The generated textures exhibit a tunable photonic bandgap(PBG)in a wide range from〜1.3 to〜2 pm.More complicated interlaced textures with adjustable structural features can be fabricated within a few seconds,which is not attainable with any other conventional techniques.Evidenee suggests that the SOPTL is extendable to more than one material system.This study augments light-matter interaction physics,offers a promising approach for constructing robust photonic devices,and opens up a new research direction in advaneed lithography. | Bo Zhang Dezhi Tan Zhuo Wang Xiaofeng Liu Beibei Xu Min Gu Limin Tong Jianrong Qiu | 2021 | Light(Science & Applications)2021，10，6： | 3 |
| 6 | Distribution of perfluorinated compounds in surface water from Hanjiang River in Wuhan, China显示文摘 | Beibei Wang Menghua Cao Hudi Zhu Jing Chen Linling Wang Guanghong Liu Xiaoman Gu Xiaohua Lu | 2013 | Chemosphere2013，，： | 2 |
| 7 | Rapid and accurate detection of African swine fever virus by DNA endonuclease-targeted CRISPR trans reporter assay显示文摘The first case of African swine fever(ASF)outbreak in China was reported in a suburban pig farm in Shenyang in 2018.Since then,the rapid spread and extension of ASF has become the most serious threat fo r the swine industry.Therefore,rapid and accurate detection of African swine fever virus(ASFV)is essential to provide effective strategies to control the disease.In this study,we developed a rapid and accurate ASFV-detection method based on the DNA endonuclease-targeted CRISPR trans reporter(DETECTR)assay.By com bining recombinase polymerase am plification w ith CRISPR-Cas12a proteins,the DETECTR assay dem onstrated a m inim um detection lim it of eight copies with no cross reactivity with other swine viruses.Clinical blood samples were detected by DETECTR assay and showed 100%(30/30)agreement w ith real-tim e polymerase chain reaction assay.The rapid and accurate detection of ASFV may facilitate tim ely eradication measures and strict sanitary procedures to control and prevent the spread of ASF. | Zongjie Li Jianchao Wei Di Di Xin Wang Chenxi Li Beibei Li Yafeng Qiu Ke Liu Feng Gu Minglong Tong Shuiming Wang Xiaodong Wu Zhiyong Ma | 2020 | Acta Biochimica et Biophysica Sinica2020，52，12： | 2 |
| 8 | Genome-wide signatures of the geographic expansion and breeding of soybean显示文摘Soybean is a leguminous crop that provides oil and protein. Exploring the genomic signatures of soybean evolution is crucial for breeding varieties with improved adaptability to environmental extremes. We analyzed the genome sequences of 2,214 soybeans and proposed a soybean evolutionary route, i.e., the expansion of annual wild soybean(Glycine soja Sieb. & Zucc.) from southern China and its domestication in central China, followed by the expansion and local breeding selection of its landraces(G. max(L.) Merr.). We observed that the genetic introgression in soybean landraces was mostly derived from sympatric rather than allopatric wild populations during the geographic expansion. Soybean expansion and breeding were accompanied by the positive selection of flowering time genes, including GmSPA3c. Our study sheds light on the evolutionary history of soybean and provides valuable genetic resources for its future breeding. | Ying-Hui Li Chao Qin Li Wang Chengzhi Jiao Huilong Hong Yu Tian Yanfei Li Guangnan Xing Jun Wang Yongzhe Gu Xingpeng Gao Delin Li Hongyu Li Zhangxiong Liu Xin Jing Beibei Feng Tao Zhao Rongxia Guan Yong Guo Jun Liu Zhe Yan Lijuan Zhang Tianli Ge Xiangkong Li Xiaobo Wang Hongmei Qiu Wanhai Zhang Xiaoyan Luan Yingpeng Han Dezhi Han Ruzhen Chang Yalong Guo Jochen C.Reif Scott A.Jackson Bin Liu Shilin Tian Li-juan Qiu | 2023 | Science China(Life Sciences)2023，66，2： | 1 |
| 9 | X-ray Detectors Based on (100)-Textured CVD Diamond Films显示文摘 | Zhang Minglong Gu Beibei Wang Linjun | 2004 | Physics Letters A2004，332，： | 1 |
| 10 | Preparation and characterization of (100)-textured diamond films obtained by hot-filament CVD显示文摘 | Minglong Zhang Beibei Gu Linjun Wang | 2005 | Vacuum2005，，： | 1 |
| 11 | Recent advances in organic electrosynthesis using heterogeneous catalysts modified electrodes显示文摘Organic electrosynthesis as an emerging green and advantageous alternative to traditional synthetic methods has achieved remarkable progress in recent years because sustainable electricity can be employed as traceless redox agents. To surmount the over-oxidation/reduction issues of direct electrolysis,mediated or indirect electrochemical processes are attaining remarkable significance and promoting the selectivity of products. Molecular electrocatalysts, benefiting from the easily electronic and steric modulation, suffers from readily degradation issue in most cases. Remarkably, heterogeneous catalysts have drawn more attention due to their high activity, stability, and recyclability. Hence, in this review, the most recent growth of heterogeneous catalysts modified electrodes for organic electrosynthesis were summarized, highlighting structural optimization and electrochemical performance of these materials as well as reaction mechanism. Furthermore, key challenges and future directions in this area were also discussed. | Li Ma Xianang Gao Xin Liu Xiaojun Gu Baoying Li Beibei Mao Zeyuan Sun Wei Gao Xiaofei Jia Jianbin Chen | 2023 | Chinese Chemical Letters2023，34，4： | 0 |
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