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BL03HB: a Laue microdiffraction beamline for both protein crystallography and materials science at SSRF

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Nuclear Science and Techniques 2024年第7期35卷 68-78页

作者： Zhi-Jun wang Si-Sheng wang Zheng-Huang Su Li yu yu-zhu wang Bo Sun Wen Wen Xing-yu Gao Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai201210China University of Chinese Academy of Science Beijing100049China

A Laue microdiffraction beamline(BL03HB) was constructed at the Shanghai Synchrotron Radiation Facility(SSRF).This beamline features two consecutive focusing points in two different sectors within its end station, the first dedicated to protein crystallography and the other tailored to materials science applications. Based on a superbend dipole magnet with a magnetic field of 2.29 T, a two-stage focusing design was implemented with two sets of Kirkpatrick-Baez mirrors to achieve a micro white beam as small as 4.2 μ m ×4.3 μ m at the first sector and 0.9 μ m ×1.3 μ m at the second sector in the standard beamline operation mode at SSRF. The X-ray microbeam in the two sectors can be easily switched between monochromatic and white beams by moving a four-bounce monochromator in or out of the light path, respectively. In the protein crystallography sector, white-beam Laue microdiffraction was demonstrated to successfully determine the structure of protein crystals from only a few images of diffraction data collected by a Pilatus 2 M area detector. In the materials science sector,the white-beam Laue diffraction was collected in a reflection geometry using another Pilatus 2 M area detector, which could map the microstructural distribution on the sample surface by scanning the samples. In general, the BL03HB beamline promotes the application of Laue microdiffraction in both protein crystallography and materials science. This paper presents a comprehensive overview of the BL03HB beamline, end station, and the first commission results.

关键词： Crystallography White-beam Laue microdiffraction Beamline Synchrotron

Optomechanically induced transparency in a spinning resonator

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Photonics Research 2017年第4期5卷 367-371页

作者： HAO Lü YAJING JIANG yu-zhu wang HUI JING Key Laboratory for Quantum Optics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Physics Henan Normal University Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University

We study optomechanically induced transparency in a spinning microresonator. We find that in the presence of rotation-induced Sagnac frequency shift, both the transmission rate and the group delay of the signal are strongly affected, leading to a Fano-like spectrum of transparency. In particular, tuning the rotary speed leads to the emergence of nonreciprocal optical sidebands. This indicates a promising new way to control hybrid light–sound devices with spinning resonators.

关键词： rate

Synthesis and Biological Activity of Philanthotoxin Analogs

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Chinese Chemical Letters 2006年第7期17卷 895-898页

作者： Yong An ZHANG Ke Zhong LIU Deng yuan wang yu zhu wang Liang Jian QU Chang Jin zhu Research Institute of Forest Ecology Environment and Protection CAE Beijing 100091 The College of Agronomy Xinjiang Agricultural University Urumqi 830052 Department of Applied Chemistry Beijing Institute of Technology Beijing 100081

The synthesis of four analogs of philanthotoxin is described. The preliminary bioassay showed that these compounds all had good insecticidal activities, and the compound 6a had the best killing effect.

关键词： PhTX synthesis biological activity

Serum anti-aquaporin 4 antibody in neuromyelitis patients is not correlated with the length of injured spinal cord segments

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Neural Regeneration Research 2011年第35期6卷 2725-2731页

作者： Shirong Li Lan Chu Shuai Dong Hui yu zhu Xu Hao wang Department of Neurology Affiliated Hospital of Guiyang Medical College Guiyang 550004 Guizhou Province China

Clinical information and serum samples of 20 neuromyelitis patients and 30 patients with multiple sclerosis were collected in this study. The expression of anti-aquaporin 4 antibody in the serum of all patients was detected with an indirect immunofluorescence assay, using human embryonic kidney 293 cell line that stably express human-derived aquaporin 4 as a substrate. The characteristics of head and spinal magnetic resonance imaging were also observed in patients who had neuromyelitis and were positive for anti-aquaporin 4 antibody. Results showed that the expression of anti-aquaporin 4 antibody was significantly different between multiple sclerosis patients and neuromyelitis patients. There were 13 out of 20 neuromyelitis patients （including high-risk syndrome） that were positive for anti-aquaporin 4 antibody. The magnetic resonance imaging examinations of the head and spinal cord found that among the 13 positive patients, nine cases showed normal cerebral hemisphere and optic nerve, two cases had optic nerve changes, and one case had an atypical lesion in the brain. All 30 multiple sclerosis patients were negative for this antibody. The experimental findings indicate that patients with neuromyelitis optica had more than three lesioned segments in the spinal cord by magnetic resonance imaging, and the segment length of the injured spinal cord was not associated with the titer of aquaporin 4 antibody in neuromyelitis patients.

关键词： neuromyelitis optica multiple sclerosis aquaporin 4 antibody magnetic resonance imaging neural regeneration

The biosafety level-2 macromolecular crystallography beamline(BL10U2)at the Shanghai Synchrotron Radiation Facility

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Nuclear Science and Techniques 2023年第12期34卷 251-263页

作者： Qin Xu Hua‑Ting Kong Ke Liu Huan Zhou Kun‑Hao Zhang Wei‑Wei wang Min‑Jun Li Qiang‑Yan Pan Xing‑Ya wang yu‑zhu wang Feng yu Xing‑yu Gao Qi‑Sheng wang Shanghai Advanced Research Institute Chinese Academy of Sciences239 Zhangheng RoadPudong DistrictShanghai 201204China Shanghai Institute of Applied Physics Chinese Academy of Sciences2019 Jialuo RoadJiading DistrictShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

BL10U2 is an undulator-based macromolecular crystallography(MX)beamline located at the 3.5-GeV Shanghai Synchrotron Radiation ***10U2 is specifically designed for conducting routine and biosafety level-2(BSL-2)MX experiments utilizing high-flux tunable X-rays with energies from 7 to 18 keV,providing a beam spot size of 20μm(horizontal)×10μm(vertical)at the sample *** by the Shanghai Pudong Municipal Health Commission confirmed the capability to perform BSL-2 MX *** beamline is currently equipped with an Eiger X 16 M detector and two newly developed in-house high-precision diffractometers that can be switched to perform conventional or in situ crystal diffraction *** automatic sample changer developed in-house allows fast sample exchange in less than 30 s,supporting high-throughput MX experimentation and rapid crystal *** collection from both the diffractometer and detector was controlled by an in-house developed data collection software(Finback)with a user-friendly interface for convenient *** study presents a comprehensive overview of the facilities,experimental methods,and performance characteristics of the BL10U2 beamline.

关键词： Shanghai Synchrotron Radiation Facility BSL-2 MX beamline BL10U2

Efficient activation of peroxymonosulfate for catalytic degradation of organic pollutants by simultaneously using low-level cobalt ions and calcium carbonate micro-particles

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Journal of Environmental Sciences 2025年第5期151卷 113-124页

作者： yu Zhou Xiaobo wang Nan wang Shuangshuang Huang Lihua zhu College of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074China College of Chemistry and Chemical Engineering Hubei Polytechnic UniversityHuangshi 435003China College of Chemistry and Environmental Engineering Wuhan Polytechnic UniversityWuhan 430023China School of Physics and Technology Center for Electron MicroscopyWuhan UniversityWuhan 430072China

An efficient catalytic system was developed to remove various organic pollutants by simultaneously using low-level cobalt ions,calcium carbonate micro-particles and peroxymonosulfate(PMS).A simple base-induced precipitation was used to successfully loaded Co-centered reactive sites onto the surface of CaCO_(3)*** optimal conditions at 25°C,10 mg/L methylene blue(MB)could be completely degraded within 10 min with 480μg/L Co^(2+),0.4 g/L CaCO_(3)microparticles(or 0.4 g/L Co@CaCO_(3))and 0.1 g/L *** MB degradation followed the pseudo first order kinetics with a rate constant of 0.583 min^(−1),being 8.3,11.5 and 53.0 times that by using Co-OH(0.07 min^(−1)),Co^(2+)(0.044 min^(−1))and CaCO_(3)(0.011 min^(−1))as the catalyst,*** was confirmed that there was a synergistic effect in the catalytic activity between Co species and the CaCO_(3)particles but the major contributor was the highly dispersed Co *** Co^(2+)-containing simulated electroplating wastewater was used as the Co^(2+)source,not only the added MB was also completely degraded within 5 min in this catalytic system,but also the coexisting heavy metal ions were substantially *** presently developed method was applied to simultaneously treat organic wastewater and heavy metals *** present method was also successfully used to efficiently degrade other organic pollutants including bisphenol A,sulfamethoxazole,rhodamine B,tetrabromobisphenol A,ofloxacin and benzoic acid.A catalytic mechanism was proposed for the PMS activation by Co@CaCO_(3).The surface of CaCO_(3)particles favors the adsorption of Co^(2+).More importantly,the surface of CaCO_(3)particles provides plentiful surface-OH and-CO_(3)^(2+),and these surface groups complex with Co^(2+)to producemore catalytically active species such as surface[CoOH]^(−),resulting in rapid Co^(2+)/Co^(3+)cycling and electron *** interactions cause the observed synergistic effect between Co species and Ca

关键词： CaCO3 Low-level cobalt Peroxymonosulfate Oxidative degradation

Enhanced cold mercury atom production with two-dimensional magneto-optical trap

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Chinese Physics B 2022年第7期31卷 262-267页

作者： Ye Zhang Qi-Xin Liu Jian-Fang Sun Zhen Xu yu-zhu wang Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China Key Laboratory of Quantum Optics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

A cold atom source is important for quantum metrology and precision *** reduce the quantum projection noise limit in optical lattice clock,one can increase the number of cold atoms and reduce the dead time by enhancing the loading *** this work,we realize an enhanced cold mercury atom source based on a two-dimensional(2D)magnetooptical trap(MOT).The vacuum system is composed of two titanium chambers connected with a differential pumping *** stable cooling laser systems are adopted for the 2D-MOT and the three-dimensional(3D)-MOT,*** an optimized 2D-MOT and push beam,about 1.3×10^(6)atoms,which are almost an order of magnitude higher than using a pure 3D-MOT,are loaded into the 3D-MOT for202Hg *** enhanced cold mercury atom source is helpful in increasing the frequency stability of a neutral mercury lattice clock.

关键词： magneto-optical trap atomic beam neutral mercury atom laser cooling and trapping

Manipulating transition of a two-component Bose–Einstein condensate with a weak δ-shaped laser

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Chinese Physics B 2019年第10期28卷 263-268页

作者： Bo Li Xiao-Jun Jiang Xiao-Lin Li Wen-Hua Hai yu-zhu wang Key Laboratory for Quantum Optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Department of Physics and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education Hunan Normal UniversityChangsha 410081China

We theoretically study the transition dynamics of a two-component Bose-Einstein condensate driven by a train of weak δ-shaped laser pulses. We find that the atomic system can experience peculiar resonant transition even under weak optical excitations and derive the resonance condition by the perturbation method. Employing this mechanism, we propose a scheme to obtain an atomic ensemble with desired odd/even atom number and also a scheme to prepare a nonclassical state of the many-body system with fixed atom number.

关键词： two-component Bose-Einstein condensate quantum kicked top model nonclassical state

Fresh insights into the onset of big mantle wedge beneath the North China Craton

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Acta Geochimica 2025年第1期44卷 145-162页

作者： Yingpeng wang Xuance wang Wen Zhang Xiaowei yu Ligong wang Jinhui wang Peigang zhu Yongbin wang Shandong Institute of Geological Survey Ji’nan 250014People’s Republic of China yunnan Key Laboratory of Earth System Science Yunnan UniversityEast Outer Ring RoadChenggong DistrictKunming 650500Yunnan ProvincePeople’s Republic of China Key Laboratory of Critical Minerals Metallogeny in Universities of yunnan Province Yunnan UniversityKunming 650500People’s Republic of China Radiogenic Isotope Facility School of Earth and Environment SciencesUniversity of QueenslandBrisbaneQLD 4072Australia

The onset of the big mantle wedge(BMW)structure beneath the North China Craton remains *** on the genesis of Late Mesozoic granites associated with gold deposits in the Jiaodong Peninsula above the BMW could provide fresh insights into this *** monzogranite from the Zhaoxian-Shaling gold district was intruded during 154-148 *** I-type granite has high-K calc-alkaline and metaluminous *** monzogranite formed at medium temperatures(718-770℃)and was generated in a thickened lower crust at depths within the stability field of *** monzogranite’s high zircon Ce^(4+)/Ce^(3+)and Eu_(N)/Eu_(N)^(*)values and low FeOT/MgO ratios,suggest that it formed in a high oxygen *** variableε_(Hf)(t)values with T_(DM2)of 1.93-2.87 Ga imply that it originated from the melting of ancient crust basement,with contributions from mantle-derived *** granite’s enrichment in LREEs and LILEs,and depletion in HREEs and HFSEs,along with its trace element tectonic discrimination diagrams and medium Sr/Y,indicate an adakite affinity in an active continental margin *** transition from S-type granites to I-type granites and finally to A-type granites observed in the eastern part of North China Craton suggests a shift in the tectonic environment from compression to *** change is also reflected in the transition from flat subduction to steep ***,the monzogranite was formed in a tectonic transition setting triggered by a change in the subduction angle of the PaleoPacific Ocean slab during the Late *** event may have marked the initiation of the BMW above the North China Craton.

关键词： Zircon U-Pb age Hf isotopic composition Jiaodong Peninsula North China Craton