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| 1 | METAMORPHIC MECHANISMSAND THEIR CONFIGURATION MODELS显示文摘The concept of metamorphic mechanisms is presented, configuration models and configuration transformations relating to a set of new matrix operations are discussed and proposed. The configuration of a metamorphic mechanism reflects the connectivity change in the mechanism during motions which results in mobility change and presents the characteristics of the mechanism which is discussed in various applications particularly in decorative artifacts. The characteristics is further investigated with mobility analysis. | Dai Jiansheng (Department of Mechanical Engineering, School of Physical Sciences and Engineering, King’s College, University of London,Strand,London WC2R 2LS, United kingdom) Zhang Qixian (Robotics Research Institute,Beijing University of Aeronautics and | 2000 | Chinese Journal of Mechanical Engineering2000，13，3： | 61 |
| 2 | 河南杞县朱岗遗址试掘报告显示文摘一、遗址概况和发掘方法杞县位于豫东西部,东距商丘约90公里,西距郑州约120公里。其地北依黄河,南临涡水,《禹贡》豫州之域,商周杞国旧地,今属开封市辖区。由于历史时期河、济泛滥,这一带的古文化遗址也屡遭湮没,淤土广厚,曾长期被视为无古可考或有古难觅之地,以往尚未进行过任何早期遗址的发掘工作。为了填补这一空白。 | Archaeology Speciality of Zhengzhou University,Kaifeng Municipal Museum and Qixian County office for the Preservation of Ancient Monuments, | 1992 | 华夏考古1992，，1： | 13 |
| 3 | Effects of redox-active interlayer anions on the oxygen evolution reactivity of NiFe-layered double hydroxide nanosheets显示文摘镍铁分层的双氢氧化物(NiFe-LDH ) nanosheets 显示出最佳的氧进化反应(OER ) 性能;然而,在 OER 活动的设置的离子的角色仍然保持不清楚。在这个工作,我们证明 NiFe-LDHs 的活动能被设置的阴离子与不同氧化还原作用潜力定制。而 NiFe-LDHs 与高氧化还原作用潜力(低减少能力)的阴离子设置了,有低氧化还原作用潜力(高减少能力)的阴离子的置闰例如次磷酸盐,与 240 mV 的低 OER 过电位和 36.9 mV/dec 的一个小 Tafel 斜坡导致 NiFe-LDHs ,例如 fluorion ,显示出 370 mV 的高过电位和 80.8 mV/dec 的一个 Tafel 斜坡。OER 活动与标准氧化还原作用潜力显示出令人吃惊的线性关联。密度功能的理论计算和 X 光检查光电子光谱学分析显示设置的阴离子改变在表面暴露了的金属原子的电子结构。有低标准氧化还原作用潜力和强壮的减少能力的阴离子把更多的电子转移到氢氧化物层。这增加表面金属地点的电子密度并且稳定他们的高原子价的状态,其形成在 OER 过程以前作为关键步被知道。 | Daojin Zhou Zhao Cai Yongmin Bi Weiliang Tian Ma Luo Qian Zhang Qixian Xie Jindi Wang Yaping Li Yun Kuang Xue Duan Michal Bajdich Samira Siahrostami Xiaoming Sun | 2018 | Nano Research2018，11，3： | 6 |
| 4 | Inhibition of inflammatory mediator release from microglia can treat ischemic/hypoxic brain injury显示文摘Interleukin-1α and interleukin-1β aggravate neuronal injury by mediating the inflammatory reaction following ischemic/hypoxic brain injury. It remains unclear whether interleukin-1α and interleukin-1β are released by microglia or astrocytes. This study prepared hippocampal slices that were subsequently subjected to oxygen and glucose deprivation. Hematoxylin-eosin staining verified that neurons exhibited hypoxic changes. Results of enzyme-linked immunosorbent assay found that interleukin-1α and interleukin-1β participated in this hypoxic process. Moreover, when hypoxic injury occurred in the hippocampus, the release of interleukin-1α and interleukin-1β was mediated by the P2X4 receptor and P2X7 receptor. Immunofluorescence staining revealed that during ischemia/hypoxia, the P2X4 receptor, P2X7 receptor, interleukin-1α and interleukin-1β expression was detectable in rat hippocampal microglia, but only P2X4 receptor and P2X7 receptor expression was detected in astrocytes. Results suggested that the P2X4 receptor and P2X7 receptor, respectively, mediated interleukin-1α and interleukin-1β released by microglia, resulting in hippocampal ischemic/hypoxic injury. Astrocytes were activated, but did not synthesize or release interleukin-1α and interleukin-1β. | Huaibo Wang Weitao Guo Hongliang Liu Rong Zeng Mingnan Lu Ziqiu Chen Qixian Xiao | 2013 | Neural Regeneration Research2013，8，13： | 5 |
| 5 | Topotactic reduction of layered double hydroxides for atomically thick two-dimensional non-noble-metal alloy显示文摘Layered double hydroxides (LDHs) have been widely used as catalysts owingto their tunable structure and atomic dispersion of high-valence metal ions;however, limited tunability of electronic structure and valence states havehindered further improvement in their catalytic performance. Herein, we reducedultrathin LDH precursors in situ and topotactically converted them to atomicallythick (N2 nm) two-dimensional (2D) multi-metallic, single crystalline alloynanosheets with highly tunable metallic compositions. The as-obtained alloynanosheets not only maintained the vertically aligned ultrathin 2D structure,but also inherited the atomic dispersion of the minor metallic compositions ofthe LDH precursors, even though the atomic percentage was higher than 20%,which is far beyond the reported percentages for single-atom dispersions (usuallyless than 0.1%). Besides, surface engineering of the alloy nanosheets can finely tunethe surface electronic structure for catalytic applications. Such in situ topotacticconversion strategy has introduced a novel approach for atomically dispersedalloy nanostructures and reinforced the synthetic methodology for ultrathin 2Dmetal-based catalysts. | Pengsong Li Qixian Xie Lirong Zheng Guang Feng Yingjie Li Zhao Cai Yongmin Bi Yaping Li Yun Kuang Xiaoming Sun Xue Duan | 2017 | Nano Research2017，10，9： | 4 |
| 6 | Study on axial changes of As-cast structures of Al-alloy sample treated by the novel SPMF technique显示文摘 | Z.I Bingtao B.A Qixian C.U.I Jianzhong X.U Guangming | 2000 | Scripta Materialia2000，，4： | 3 |
| 7 | Enhancing oxygen evolution reaction by cationic surfactants显示文摘Oxygen evolution reaction is critical for water splitting or metal-air batteries,but previous research mainly focuses on electrode material or structure optimization.Herein,we demonstrate that surfactant modification of a NiFe layered double hydroxide (LDH) array electrode,one of the best catalysts for oxygen evolution reaction (OER),could achieve superaerophobic surface with balanced surface charges,affording fast mass transfer,quick gas release,and boosted OER performance.The assembled surfactants on the electrode surface are responsible for lowering the bubble adhesive force (~ 1.03 μN) and corresponding fast release of small bubbles generated during OER.In addition,the bipolar nature of the hexadecyl trimethyl ammonium bromide (CTAB) molecule lead to bilayer assembly of the surfactants with the polar ends facing the electrode surface and the electrolyte,resulting in neutralized charges on the electrode surface.As a result,OH-transfer was facilitated and OER performance was enhanced.With the modified superaerophobic surface and balanced surface charge,NiFe LDHs-CTAB nanostructured electrode showed ultrahigh current density increase (9.39 mA(mV·cm^2)),2.3 times higher than that for conventional NiFe LDH nanoarray electrode),dramatically fast gas release,and excellent durability.The introduction of surfactants to construct under-water superaerophobic electrode with in-time repelling ability to the as-formed gas bubbles may open up a new pathway for designing efficient electrodes for gas evolution systems with potentially practical application in the near future. | Qixian Xie Daojin Zhou Pengsong Li Zhao Cai Tianhui Xie Tengfei Gao Ruida Chen Yun Kuang Xiaoming Sun | 2019 | Nano Research2019，12，9： | 3 |
| 8 | Copper-indium hydroxides derived electrocatalysts with tunable compositions for electrochemical CO_(2) reduction显示文摘Bimetallic Cu-In hybrid electrocatalysts are promising noble metal-free catalysts for selective electrochemical CO_(2) reduction reaction(ECO_(2) RR).Most reports show Cu-In catalysts are selective towards CO evolutio n.However,few show similarly high selectivity towards formate.Herein we fabricated composition tunable Cu-In hydroxides(Cu_xIn_y-OH) by the hydrothermal method and studied their composition effect on electrochemical CO_(2) reduction in detail. We found that the selectivity of CO_(2) reduction products shifted from CO to formate when the content of In increased in the Cu_xIn_y-OH electrocatalysts.The Cu rich electrocatalyst mostly produced CO,which could achieve a Faradaic efficiency(FE) to 75.8% at-0.59 V vs.RHE(Cu_(76)In_(24)based electrocatalysts).In comparison,the In rich electrocatalysts selectively produced formate,which possessed the FE of formate up to 85% at-1.01 V vs.RHE.Our work systematically illustrates the composition effect on hybrid catalysts,and provides insights into the design of highly selective catalysts for ECO_(2) RR. | Qixian Xiea Gaston O.Larrazabal Ming Ma Ib Chorkendorff Brian Seger Jingshan Luo | 2021 | Journal of Energy Chemistry2021，30，12： | 2 |
| 9 | MODIFIED WEIGHTED GRADIENT PROJECTION METHOD AND RESEARCH TO THE KINEMATIC CONTROL OF REDUNDANT MANIPULATORS显示文摘MODIFIEDWEIGHTEDGRADIENTPROJECTIONMETHODANDRESEARCHTOTHEKINEMATICCONTROLOFREDUNDANTMANIPULATORSChenWeihai;YangZongxu;ZhangQix... | Chen Weihai Yang Zongxu Zhang Qixian(Institute for Robottes, Beijing University of Aeronautics and Astronautics, Beijing, China, 100083)Zhao Zhanfang(Institute for Robotics Research, Beijing Institute of Technology, Beijing, China, 100081) | 1996 | Chinese Journal of Aeronautics1996，9，3： | 1 |
| 10 | On Maximal Weight Moment and Overturn Tendency of Multi-Sucker Wall-Climbing Mechanism显示文摘1IntroductionThesafetyofwalclimbingrobotisofgreatimportanceinrobotdesignandgaitprogramming.Safetyrequirementsincludebothan... | Qian Jinwu Gong Zhenbang (School of Mechanical and Electronic Engineering, Shanghai University) Zhang Qixian (Beijing University of Aeronautics and Astronautics) | 1999 | Advances in Manufacturing1999，，2： | 1 |
| 11 | On non Tidal Gravity Change in China from the Results of Absolute Gravity Measurements显示文摘 | Qiu Qixian | 1995 | Tire a part des Cahiers du Centre Europeen de Geodynamique et de Seismologie1995，11，： | 1 |
| 12 | Ribonuclease H-like gene SMALL GRAIN2 regulates grain size in rice through brassinosteroid signaling pathway显示文摘Grain size is a key agronomic trait that determines the yield in plants.Regulation of grain size by brassinosteroids(BRs)in rice has been widely reported.However,the relationship between the BR signaling pathway and grain size still requires further study.Here,we isolated a rice mutant,named small grain2(sg2),which displayed smaller grain and a semi-dwarf phenotype.The decreased grain size was caused by repressed cell expansion in spikelet hulls of the sg2 mutant.Using map-based cloning combined with a Mut Map approach,we cloned SG2,which encodes a plant-specific protein with a ribonuclease H-like domain.SG2 is a positive regulator downstream of GLYCOGEN SYNTHASE KINASE2(GSK2)in response to BR signaling,and its mutation causes insensitivity to exogenous BR treatment.Genetical and biochemical analysis showed that GSK2 interacts with and phosphorylates SG2.We further found that BRs enhance the accumulation of SG2 in the nucleus,and subcellular distribution of SG2 is regulated by GSK2 kinase activity.In addition,Oryza sativa OVATE family protein 19(OsOFP19),a negative regulator of grain shape,interacts with SG2 and plays an antagonistic role with SG2 in controlling gene expression and grain size.Our results indicated that SG2 is a new component of GSK2-related BR signaling response and regulates grain size by interacting with Os OFP19. | Yunshuai Huang Hui Dong Changling Mou Ping Wang Qixian Hao Min Zhang Hongmin Wu Fulin Zhang Tengfei Ma Rong Miao Kai Fu Yaping Chen Ziyan Zhu Cheng Chen Qikai Tong Zhuoran Wang Shirong Zhou Xi Liu Shijia Liu Yunlu Tian Ling Jiang Jianmin Wan | 2022 | Journal of Integrative Plant Biology2022，64，10： | 1 |
| 13 | Design of monochromatic X ray imager with a pinhole and a logarithmic spiral Bragg mirror for Z-pinch diagnoses显示文摘 | Yang Qingguo Li Zeren Peng Qixian | 2009 | Nucl Instrum Meth A2009，606，3： | 1 |
| 14 | Mobility Analysis of a Complex Structured Ball Based on Mechanism Decomposition and Equivalent Screw 显示文摘 | Dai J S Li Duanling Zhang Qixian | 2004 | Mechanism and Machine Theory2004，39，： | 1 |
| 15 | K-shell emission X ray imaging of Z pinch plasmas with a pinhole and a logarithmic spiral crys- tal显示文摘 | Yang Qingguo Li Zeren Peng Qixian | 2011 | Rev Sci Instrurn2011，82，09： | 1 |
| 16 | Response characteristics of gas pressure under simultaneous static and dynamic load:Implication for coal and gas outburst mechanism显示文摘Coal and gas outbursts are dynamic disasters in which a large mass of gas and coal suddenly emerges in a mining space within a split second.The interaction between the gas pressure and stress environment is one of the key factors that induce coal and gas outbursts.In this study,first,the coupling relationship between the gas pressure in the coal body ahead of the working face and the dynamic load was investigated using experimental observations,numerical simulations,and mine-site investigations.It was observed that the impact rate of the dynamic load on the gas-bearing coal can significantly change the gas pressure.The faster the impact rate,the speedier the increase in gas pressure.Moreover,the gas pressure rise was faster closer to the impact interface.Subsequently,based on engineering background,we proposed three models of stress and gas pressure distribution in the coal body ahead of the working face:static load,stress disturbance,and dynamic load conditions.Finally,the gas pressure distribution and outburst mechanism were investigated.The high concentration of gas pressure appearing at the coal body ahead of the working face was caused by the dynamic load.The gas pressure first increased gradually to a peak value and then decreased with increasing distance from the working face.The increase in gas pressure plays a major role in outburst initiation by resulting in the ability to more easily reach the critical points needed for outburst initiation.Moreover,the stronger the dynamic load,the greater the outburst initiation risk.The results of this study provide practical guidance for the early warning and prevention of coal and gas outbursts. | Longyong Shu Liang Yuan Qixian Li Wentao Xue Nannan Zhu Zhengshuai Liu | 2023 | International Journal of Mining Science and Technology2023，33，2： | 1 |
| 17 | Distance and positioning accuracy for robotic manipulators显示文摘 | Zhou Xuecai Zhang Qixian Graver William A | 1994 | IEEE International Conference on Intelligent Robots and Systems1994，，2： | 1 |
| 18 | Level of natriuretic peptide de- termines outcome in atrial fibrillation 显示文摘 | Qixian Z Mingfen W Wei Z et aI | 2010 | Journal of Atrial Fibrilla- tion2010，1，10： | 1 |
| 19 | Probabilistic Analysis and MonteCarlo Simulation of the Kinematic Error in a Spatial Linkage显示文摘 | Xu Weiliang Zhang Qixian | 1989 | Mecha-nism and Machine Theory1989，24，1： | 1 |
| 20 | Pancreatic cancer therapy by systemic administration of VEGF siRNA contained in calcium phosphate/charge-conversional polymer hybrid nanoparticles显示文摘 | Frederico Pittella Kanjiro Miyata Yoshinori Maeda Tomoya Suma Sumiyo Watanabe Qixian Chen R. James Christie Kensuke Osada Nobuhiro Nishiyama Kazunori Kataoka | 2012 | Journal of Controlled Release2012，，3： | 1 |
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