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| 1 | Damage identification method of girder bridges based on finite element model updating and modal strain energy显示文摘A timely and accurate damage identification for bridge structures is essential to prevent sudden failures/collapses and other catastrophic accidents.Based on response surface model(RSM)updating and element modal strain energy(EMSE)damage index,this paper proposes a novel damage identification method for girder bridge structures.The effectiveness of the proposed damage identification method is investigated using experiments on four simply supported steel beams.With Xiabaishi Bridge,a prestressed continuous rigid frame bridge with large span,as the engineering background,the proposed damage identification method is validated by using numerical simulation to generate different bearing damage scenarios.Finally,the efficiency of the method is justified by considering its application to identifying cracking damage for a real continuous beam bridge called Xinyihe Bridge.It is concluded that the EMSE damage index is sensitive to the cracking damage and the bearing damage.The locations and levels of multiple cracking damages and bearing damages can be also identified.The results illuminate a great potential of the proposed method in identifying damages of real bridge structures. | NIU Jie ZONG Zhou Hong CHU Fu Peng | 2015 | Science China(Technological Sciences)2015，58，4： | 12 |
| 2 | A Local Cluster of Omicron Variant COVID-19 Likely Caused by Internationally Mailed Document——Beijing Municipality,China,January 2022显示文摘On January 15,2022,a 26 years old female(Case A)went to a sampling site for coronavirus disease 2019(COVID-19)testing due to excessive fatigue and fever for two days.This patient preliminarily tested positive for severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)using a quantitative real-time reverse transcription polymerase chain reaction(qRT-PCR)method. | Daitao Zhang Shuangsheng Wu Zhenyong Ren Ying Sun Xiangfeng Dou Zhaomin Feng Fu Li Yi Tian Shujuan Cui Baiwei Liu Bing Lyu Xiaoli Wang Feng Liu Lina Jin Chu Jiang Lina Tian Zhenjiang Xin Zhichao Liang Lei Jia Quanyi Wang Yang Pan Peng Yang | 2022 | China CDC weekly2022，4，14： | 6 |
| 3 | The first data release(DR1) of the LAMOST regular survey显示文摘The Large sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST) general survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects in both the pilot survey and the first year regular survey are included in the LAMOST DR1. The pilot survey started in October 2011 and ended in June 2012, and the data have been released to the public as the LAMOST Pilot Data Release in August 2012. The regular survey started in September 2012, and completed its first year of operation in June 2013. The LAMOST DR1 includes a total of 1202 plates containing 2 955 336 spectra, of which 1 790 879 spectra have observed signalto-noise ratio(SNR) ≥ 10. All data with SNR ≥ 2 are formally released as LAMOST DR1 under the LAMOST data policy. This data release contains a total of 2 204 696 spectra, of which 1 944 329 are stellar spectra, 12 082 are galaxy spectra and 5017 are quasars. The DR1 not only includes spectra, but also three stellar catalogs with measured parameters: late A,FGK-type stars with high quality spectra(1 061 918 entries), A-type stars(100 073 entries), and M-type stars(121 522 entries). This paper introduces the survey design, the observational and instrumental limitations, data reduction and analysis, and some caveats. A description of the FITS structure of spectral files and parameter catalogs is also provided. | A-Li Luo Yong-Heng Zhao Gang Zhao Li-Cai Deng Xiao-Wei Liu Yi-Peng Jing Gang Wang Hao-Tong Zhang Jian-Rong Shi Xiang-Qun Cui Yao-Quan Chu Guo-Ping Li Zhong-Rui Bai Yue Wu Yan Cai Shu-Yun Cao Zi-Huang Cao Jeffrey L.Carlin Hai-Yuan Chen Jian-Jun Chen Kun-Xin Chen Li Chen Xue-Lei Chen Xiao-Yan Chen Ying Chen Norbert Christlieb Jia-Ru Chu Chen-Zhou Cui Yi-Qiao Dong Bing Du Dong-Wei Fan Lei Feng Jian-Ning Fu Peng Gao Xue-Fei Gong Bo-Zhong Gu Yan-Xin Guo Zhan-Wen Han Bo-Liang He Jin-Liang Hou Yong-Hui Hou Wen Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Zhi-Ying Huo Lei Jia Fang-Hua Jiang Xiang Jiang Zhi-Bo Jiang Ge Jin Xiao Kong Xu Kong Ya-Juan Lei Ai-Hua Li Chang-Hua Li Guang-Wei Li Hai-Ning Li Jian Li Qi Li Shuang Li Sha-Sha Li Xin-Nan Li Yan Li Yin-Bi Li Ye-Ping Li Yuan Liang Chien-Cheng Lin Chao Liu Gen-Rong Liu Guan-Qun Liu Zhi-Gang Liu Wen-Zhi Lu Yu Luo Yin-Dun Mao Heidi Newberg Ji-Jun Ni Zhao-Xiang Qi Yong-Jun Qi Shi-Yin Shen Huo-Ming Shi Jing Song Yi-Han Song Ding-Qiang Su Hong-Jun Su Zheng-Hong Tang Qing-Sheng Tao Yuan Tian Dan Wang Da-Qi Wang Feng-Fei Wang Guo-Min Wang Hai Wang Hong-Chi Wang Jian Wang Jia-Ning Wang Jian-Ling Wang Jian-Ping Wang Jun-Xian Wang Lei Wang Meng-Xin Wang Shou-Guan Wang Shu-Qing Wang Xia Wang Ya-Nan Wang You Wang Yue-Fei Wang You-Fen Wang Peng Wei Ming-Zhi Wei Hong Wu Ke-Fei Wu Xue-Bing Wu Yu-Zhong Wu Xiao-Zheng Xing Ling-Zhe Xu Xin-Qi Xu Yan Xu Tai-Sheng Yan De-Hua Yang Hai-Feng Yang Hui-Qin Yang Ming Yang Zheng-Qiu Yao Yong Yu Hui Yuan Hai-Bo Yuan Hai-Long Yuan Wei-Min Yuan Chao Zhai En-Peng Zhang Hua-Wei Zhang Jian-Nan Zhang Li-Pin Zhang Wei Zhang Yong Zhang Yan-Xia Zhang Zheng-Chao Zhang Ming Zhao Fang Zhou Xu Zhou Jie Zhu Yong-Tian Zhu Si-Cheng Zou Fang Zuo | 2015 | Research in Astronomy and Astrophysics2015，15，8： | 2 |
| 4 | Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3–xSm lead-free ceramics显示文摘In this paper,Sm-doped 0.96(K0.48 Na0.52)(Nb0.95 Sb0.05)–0.04 Bi0.5(Na0.82 K0.18)0.5 Zr O3(abbreviated as KNSN–0.04 BNKZ)lead-free piezoelectric ceramics were prepared by conventional solid-state sintering method and the effects of Sm2 O3 on the phase structure,microstructure,electrical and luminescent properties of KNSN–0.04 BNKZ potteries were studied.Results revealed that a single solid solution phase with pseudo-cubic perovskite structure was formed between KNSN–0.04 BNKZ and Sm2 O3.Existence of weak dielectric/ferroelectric properties with a diffuse dielectric anomaly and slim P–E hysteresis loops of the Sm-doped KNSN–0.04 BNKZ demonstrated the ferroelectric relaxor behavior of the KNNS–0.04 BNKZ–x Sm ceramics.Accordingly,the temperature stability and fatigue behavior of the modified ceramics were significantly improved.It was found that the KNSN–0.04 BNKZ ceramics with 0.002 mol Sm addition exhibited nearly temperature independent properties and fatigue-free behavior.Moreover,Sm-modified KNSN–0.04 BNKZ exhibits a bright photoluminescence with a strong orange emission under visible light irradiation.As a material with both electrical and luminescent properties,it has good application prospect in future optoelectronic components by integrating its luminescent and electrical properties. | Wei LI Jigong HAO Wei LI Juan DU Peng FU Wenzhi SUN Chong CHEN Zhijun XU Ruiqing CHU | 2020 | Journal of Advanced Ceramics2020，9，1： | 2 |
| 5 | The DNMT1-PAS1-PH20 axis drives breast cancer growth and metastasis显示文摘PH20 is a member of the human hyaluronidase family that degrades hyaluronan in the extracellular matrix and controls tumor progression.Inhibition of DNA methyltransferases(DNMTs)leads to elevated hyaluronan levels;however,whether DNMT inhibitors control PH20 remains unclear.Here,we report that the DNMT1 inhibitor,decitabine,suppresses PH20 expression by activating the long non-coding RNA PHACTR2-AS1(PAS1).PAS1 forms a tripartite complex with the RNA-binding protein vigilin and histone methyltransferase SUV39H1.The interaction between PAS1 and vigilin maintains the stability of PAS1.Meanwhile,PAS1 recruits SUV39H1 to trigger the H3K9 methylation of PH20,resulting in its silencing.Functionally,PAS1 inhibits breast cancer growth and metastasis,at least partially,by suppressing PH20.Combination therapy of decitabine and PAS1-30nt-RNA,which directly binds to SUV39H1,effectively blocked breast cancer growth and metastasis in mice.Taken together,DNMT1,PAS1,and PH20 comprise a regulatory axis to control breast cancer growth and metastasis.These findings reveal that the DNMT1-PAS1-PH20 axis is a potential therapeutic target for breast cancer. | Yenan Fu Xi Zhang Xiao Liu Peng Wang Wenhui Chu Wei Zhao Yunling Wang Guangbiao Zhou Yu Yu Hongquan Zhang | 2022 | Signal Transduction and Targeted Therapy2022，7，4： | 2 |
| 6 | Nitrogen‐Doped Carbon Encapsulated Mesoporous Vanadium Nitride Nanowires as Self‐Supported Electrodes for Flexible All‐Solid‐State Supercapacitors显示文摘 | Biao Gao Xingxing Li Xiaolin Guo Xuming Zhang Xiang Peng Lei Wang Jijiang Fu Paul K. Chu Kaifu Huo | 2015 | Adv. Mater. Interfaces2015，，13： | 1 |
| 7 | (±)-Pyriindolin with a 2,2'-bipyridine-spiro[furan-3,3'-indoline]chimeric skeleton from the endophytic Streptomyces albolongus EA12432显示文摘(±)-Pyriindolin(1)with a rare molecular backbone formed by fusing a 2,2'-bipyridine nucleus into a spiro[furan-3,3'-indoline]skeleton,was isolated from the Streptomyces albolongus EA12432.The constitution and the relative configuration of(±)-1 were determined by extensive spectroscopic analyses,^(13)C calculation and DP4+probability analysis.The absolute configurations of optically pure(+)-1 and(-)-1 which were obtained after a chiral high performance liquid chromatography(HPLC)separation were further identified by electronic circular dichroism(ECD)calculations.(+)-and(-)-Pyriindolins displayed moderate cytotoxicity against HCT-116 cell line with the half-maximal inhibitory concentration(IC_(50))values of 2.89±0.17μmol/L and 4.47±0.26μmol/L,respectively. | Mengmeng Lan Tongxu Cui Kaichun Xia Guodong Cui Yiwen Chu Peng Fu Weiming Zhu | 2022 | Chinese Chemical Letters2022，33，1： | 0 |
| 8 | Additive Manufacturing Fiber Preforms for Structured Silica Fibers with Bismuth and Erbium Dopants显示文摘Dear Editor Silica optical fibers have attracted a lot of attention because they are widely used in communications and sensing,and forming today’s internet backbone.Driving much of the Internet-of-Things(IoT)evolution,optical fibers are expanding from a single function transmission technology to perform multiple functions and a growing need for various custom-design application-specific optical fibers.Current optical fiber manufacturing based on chemical vapor deposition(CVD)technologies together with stack-and-draw approaches used for structured optical fibers faces numerous challenges in enabling more complex geometries multimaterial composite fibers and multicore fibers.The additive manufacturing,or 3D printing,offers a solution to address all those challenges,and may potentially disrupt the optical fibers fabrication and bring in an evolution to IoT. | Yushi Chu Xinghu Fu Yanhua Luo John Canning Jiaying Wang Jing Ren Jianzhong Zhang Gang-Ding Peng | 2022 | Light(Advanced Manufacturing)2022，3，2： | 0 |
| 9 | STUDIES ON CHIRAL THIOPHOSPHORIC ACIDS AND THEIR DERIVATIVES 11.——THE RESOLUTION OF O-METHYL O-PHENYL THIOPHOSPHORIC ACID AND ABSOLUTE CONFIGURATIONS OF ITS OPTICAL ISOMERS显示文摘Racemic O-methyl O-pheayl thiophosphoric acid 1 has been successfully resolved through its quinine and brucine salts in methanol solution by fractional crystallization. The absolute configurations of the optically active 1 have been established as (+)-R-1 and (-)-S-1 by chemical correlation. | Chu Chi TANG, Mian Ji ZHANG, Fu Peng MA and Zhen LI Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071 | 1993 | Chinese Chemical Letters1993，4，11： | 0 |
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