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Age,genesis,and Tectonic Setting of the Mo-W Mineralized Dongshanwan Granite Porphyry from the Xilamulun Metallogenic Belt,NE China

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Journal of Earth Science 2017年第3期28卷 433-446页

作者： Xuebing Zhang Keyong wang Chengyang wang Wen Li Qi YU Yicun wang Jianfeng Li Duo wan Guanghuan Huang College of Earth Sciences Jilin UniversityChangchun 130061China Department of Earthquake Seienee Institute of Disaster Prevention Science and TechnologyBeijing 101601China Inner Mongolia Shandong Gold Minerals Survey Co.Ltd. Chifeng 024005China Heilongjiang Institute of Regional geology Survey Harbin 150080China College of Urban and Environmental Sciences Liaoning Normal UniversityDalian 116029China

The Xilamulun molybdenum polymetallic metallogenic belt in eastern Inner Mongolia forms one of the most important Mo metallogenic belts in northeastern China. The Dongshanwan porphyry Mo-W polymetallic deposit, in the northeastern part of the Xilamulun metallogenic belt, occurs along the periphery of a granite porphyry and consists of Mo-W-Ag sulfide and oxide disseminations and veinlets in hydrothermal assemblages. LA-ICP-MS zircon U-Pb dating of the Dongshanwan granite porphyry yields a crystallization age of 142.15± 0.91 Ma, whereas molybdenite Re-Os isotopic dating model ages are of 139.9–141.5 Ma and an isochron age is of 140.5± 3.2 Ma（MSWD=1.2）. The age consistency indicates that the Dongshanwan deposit was a product of Early Cretaceous magmatism. The Dongshanwan granite porphyry is a high-alkali high-potassium intrusion and has high SiO_2（75.39 wt.%–76.15 wt.%）, low Al_2O_3（12 wt.%–13 wt.%）, Ba, Ti, P, and Sr contents, with negative Eu anomalies. The Y/Nb ratios are comparable to those of average continental crust and island arc basalts, corresponding to type-A2 granites. Our geochemical data indicate that the granite porphyry emplaced in an Early Cretaceous post-orogenic extensional environment following Mongol-Okhotsk oceanic subduction and subsequent continental collision.

关键词： Dongshanwan porphyry Mo-W deposit zircon U-Pb dating Re-Os dating geochemistry Xilamulun metallogenic belt

维普期刊数据库

Layer-by-Layer Assembled Bacterial Cellulose/Graphene Oxide Hydrogels with Extremely Enhanced Mechanical Properties

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Nano-Micro Letters 2018年第3期10卷 52-61页

作者： Honglin Luo Jiaojiao Dong Fanglian Yao Zhiwei Yang Wei Li Jie wang Xinhua Xu Jian Hu Yizao wan School of Materials Science and Engineering East China Jiaotong University School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology Ministry of Education Tianjin University School of Chemical Engineering Tianjin University

Uniform dispersion of two-dimensional(2 D) graphene materials in polymer matrices remains challenging. In this work, a novel layer-by-layer assembly strategy was developed to prepare a sophisticated nanostructure with highly dispersed 2 D graphene oxide in a three-dimensional matrix consisting of onedimensional bacterial cellulose(BC) nanofibers. This method is a breakthrough, with respect to the conventional static culture method for BC that involves multiple in situ layer-by-layer assembly steps at the interface between previously grown BC and the culture medium. In the as-prepared BC/GO nanocomposites, the GO nanosheets are mechanically bundled and chemically bonded with BC nanofibers via hydrogen bonding,forming an intriguing nanostructure. The sophisticated nanostructure of the BC/GO leads to greatly enhanced mechanical properties compared to those of bare BC. This strategy is versatile, facile, scalable, and can be promising for the development of high-performance BC-based nanocomposite hydrogels.

关键词： Bacterial cellulose Nanocomposite Graphene oxide Biosynthesis Nanofiber Hydrogels

维普期刊数据库

Steering elementary steps towards efficient alkaline hydrogen evolution via size-dependent Ni/NiO nanoscale heterosurfaces

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National Science Review 2020年第1期7卷 27-36页

作者： Lu Zhao Yun Zhang Zhonglong Zhao Qing-Hua Zhang Lin-Bo Huang Lin Gu Gang Lu Jin-Song Hu Li-Jun wan Beijing National Laboratory for Molecular Sciences(BNLMS) CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Institute of Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences College of Chemistry and Materials Science Sichuan Normal University Department of Physics and Astronomy California State University Northridge Beijing National Research Center for Condensed Matter Physics Collaborative Innovation Center of Quantum Matter Institute of Physics Chinese Academy of Sciences

Alkaline hydrogen evolution reaction(HER), consisting of Volmer and Heyrovsky/Tafel steps, requires extra energy for water dissociation, leading to more sluggish kinetics than acidic HER. Despite the advances in electrocatalysts, how to combine active sites to synergistically promote both steps and understand the underlying mechanism remain largely unexplored. Here, Density Functional Theory(DFT) calculations predict that NiO accelerates the Volmer step while metallic Ni facilitates the Heyrovsky/Tafel step. A facile strategy is thus developed to control Ni/NiO heterosurfaces in uniform and well-dispersed Ni-based nanocrystals, targeting both reaction steps synergistically. By systematically modulating the surface composition, we find that steering the elementary steps through tuning the Ni/NiO ratio can significantly enhance alkaline HER activity, and Ni/NiO nanocrystals with a Ni/NiO ratio of 23.7% deliver the best activity, outperforming other state-of-the-art analogues. The results suggest that integrating bicomponent active sites for elementary steps is effective for promoting alkaline HER, but they have to be balanced.

关键词： alkaline hydrogen evolution reaction electrocatalysis elementary step Ni/NiO interface

Pulsed-wire system for undulator measurement

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Radiation Detection Technology and Methods 2022年第2期6卷 150-158页

作者： Zhiqiang Li Huihua Lu wan Chen Yuhui Li yongsheng Huang Peng Liu Lingling Gong Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China

Purpose More undulators are required of HEPS in *** efficiency of traditional Hall-probe measurement method is relatively low,which is difficult to meet the measurement needs of large quantities of *** order to improve debugging efficiency,the pulsed-wire method is required further *** A pulsed-wire method is an effective method to achieve magnetic field distribution through narrow aperture of *** pulsed-wire method works by sending a square current pulse through the wire,which will induce an interaction with the magnetic field due to the Lorentz *** force causes the wire to be displaced,and this displacement travels along the wire in both directions as an acoustic *** of the displacement in the wire over time using a motion detector yields the first or second integrals of the magnetic *** The accuracy and repeatability are the important *** repeatability of the first field integral of the pulsed-wire system is better than 1‰which meets the design *** This paper illustrates the effectiveness of pulsed-wire system by test *** comparison,the accuracy of the system is *** provides a new important measurement system for undulators in future.

关键词： Magnetic field measurement Undulator Pulsed wire Integral field measurement Displacement

Ⅲ-V/Si hybrid laser integrated with a TM polarizer

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Ⅲ-V/Si hybrid laser integrated with a TM polarizer

ZJS Sets its Targets High

第十一届全国硅基光电子材料及器件研讨会

作者： Chaoyang ge Lianxue Zhang Yi wan Li Tao Xin Fang Wenhao Zhai Cheng Tian Yanping Li Guangzhao Ran State Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Peking University

The reported Ⅲ-V/Si hybrid lasers are almost transverse–electric（TE）polarized, here we propose a Ⅲ-V/Si hybrid laser, whose output is dominantly transverse magnetic（TM） light. The essential element of the laser is a 6.4 μm-long polarization converter based on spoof plasmonic metamaterial, which can realize transverse electric（TE） light-to-TM conversion at a telecommunication wavelength of1540 nm. Numerical simulations demonstrate that the laser can realize efficient TM output of about 70%.

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cnki会议

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China International Business 2005年第6期 40-41页

作者： wan LIXIN

Facing stiff competition from both EMS and the international giants, Z J S is keen to prove its worth in the express post sector

关键词：宅急送公司特快专递价格竞争中国

NINGBO Out of the Shadows

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China International Business 2006年第8期 47-50页

作者： wan LIXIN

Although Ningbo is a large port city on the Hangzhou Bay, Zhejiang Province, locals tend to believe this characterization needs amplification. They are quick to point to the fact that though Ningbo is administratively subsidiary to the provincial capital of Hangzhou, it is one of the fourteen quasi-provincial cities in China and on many economic indicators it rivals, or exceeds, Hangzhou.

关键词：宁波市投资环境招商引资经济增长

Nanomotor-based H_(2)S donor with mitochondrial targeting function for treatment of Parkinson’s disease

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Bioactive Materials 2024年第1期31卷 578-589页

作者： Zinan Zhao Lin Chen Chunhao Yang Wenyan Guo Yali Huang Wenjing wang Mimi wan Chun Mao Jian Shen National and Local Joint Engineering Research Center of Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China

Reduction of endogenous hydrogen sulfide(H_(2)S)is considered to have an important impact on the progress of Parkinson’s disease(PD),thus exogenous H_(2)S supplementation is expected to become one of the key means to treat ***,at present,it is difficult for H_(2)S donors to effectively penetrate the blood brain barrier(BBB),selectively release H_(2)S in brain,and effectively target the mitochondria of neuron ***,we report a kind of nanomotor-based H_(2)S donor,which is obtained by free radical polymerization reaction between L-cysteine derivative modified-polyethylene glycol(PEG-Cys)and 2-methacryloyloxyethyl phosphorylcholine(MPC).This kind of H_(2)S donor can not only effectively break through BBB,but also be specifically catalyzed by cystathionineβ-synthase(CBS)in neurons of PD site in brain and 3-mercaptopyruvate sulfurtransferase(3-MST)in mitochondria to produce H_(2)S,endowing it with chemotaxis/motion ***,the unique chemotaxis effect of nanomotor can realize the purpose of precisely targeting brain and the mitochondria of damaged neuron cytopathic *** kind of nanomotor-based H_(2)S donor is expected to enrich the current types of H_(2)S donors and provide new ideas for the treatment of PD.

关键词： Hydrogen sulfide donor Mitochondrial targeting Parkinson’s disease Blood brain barrier

Quantitative Proteomic Studies on TNBC in Premenopausal Patients

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Chemical Research in Chinese Universities 2013年第3期29卷 500-505页

作者： LIANG Jin-long LI Si-jie LIU Xiang-guo LI wan-feng HAO Dong-yun FAN Zhi-min Department of Breast Surgery the First Hospital of Jilin University Changchun 130021 P. R. China Department of general Surgery Heilongjiang Province Hospital Harbin 150001 P. R. China Biotechnology Research Centre Jilin Academy of Agricultural Sciences Changchun 130033 P. R. China

The molecular mechanism of triple-negative breast cancer（TNBC） remains unclear, and there has been no effective targeted therapy for it. A better understanding of the mechanisms of TNBC is urgently needed to identify new therapeutic targets. In this study, eight cases of premenopausal TNBC patients were collected, and a comparative proteomic analysis of their breast cancer tissues and matched paraneoplastic ones was performed via isobaric tags for relative and absolute quantitation（iTRAQ） technology coupled with two-dimensional liquid chromatography-tandem mass spectrumetry（2D LC-MS/MS）. The researches result in the identification of 1254 nonredundant proteins, of which 1243 proteins reached the strict quantitative standard. The quantitative comparison reveal that among the 214 proteins, 81 proteins significantly increased and 133 proteins decreased in TNBC tissues compared to corresponding ones in control. The gene Ontology（GO） annotations and pathway analysis show their distributions in GO and the marked functions, as well as the closely related signal transduction pathways involved in extra cellular matrix （ECM）-receptor interaction, protein digestion and absorption, renin-angiotensin system, complement and coagulation cascades and focal adhesion. This pilot study will lay a foundation for further searching for therapeutic targets of TNBC and exploring the molecular mechanism, which can also be extended as a part of a large scale biomarker discovery plan.

关键词： Triple-negative breast cancer(TNBC) Proteomics Isobaric tags for relative and absolute quantitation (iTRAQ) Mass spectrometry