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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 | 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 |
| 3 | 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 |
| 4 | 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 |
| 5 | 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 |
| 6 | 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 |
| 7 | 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 |
| 8 | 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 |
| 9 | Synthesizing spatial 7R mechanism with 16-assembly configurations显示文摘 | Liao Qizheng Liang Chonggao Zhang Qixian | 1993 | Mechanism and Machine Theory1993，28，5： | 1 |
| 10 | Mobility analysis of a complex structured ball based on mechanism decomposition and equivalent screw system analysis显示文摘 | Jian S. Dai Duanling Li Qixian Zhang Guoguang Jin | 2004 | Mechanism and Machine Theory2004，，4： | 1 |
| 11 | Mobility Analysis of a Complex Structured Ball Based on Mechanism Decomposition and Equivalent Screw System Analysis显示文摘 | Dai J S Li Duanling Zhang Qixian | | 0，，04： | 1 |
| 12 | A low cost internet - based telerobotic system for access to remote laboratories显示文摘 | You Song Wang Tianmiao Eagleson Roy Meng Cai Zhang Qixian | 2001 | Artificial Intelligence in Engineering2001，，15： | 1 |
| 13 | Treating CsPbI_(3) Perovskite with Pyrrolidinium Iodide to Improve the Performance of Perovskite Solar Cells显示文摘All-inorganic CsPbI_(3) perovskite has attracted wide attention due to its desirable optical bandgap(Eg:∼1.7 eV)as well as high chemical stability.Nevertheless,the photovoltaic performance of CsPbI_(3) perovskite solar cells(PSCs)was limited by severe nonradiative charge recombination due to high defect density at the grain boundary and surface of perovskitefilms.To address this issue,a pyrrolidinium iodide(PyI)molecule was introduced to modify the surface and grain boundary of CsPbI_(3) perovskitefilms to passivate defects,which improves the quality of CsPbI_(3) perovskitefilms as well as induces the generation of a quasi-2D Py_(2)CsPb_(2)I_(7) capping layer between per-ovskite layer and hole transport layer.Such quasi-2D Py_(2)CsPb_(2)I_(7) capping layer optimizes interface contact between CsPbI_(3) perovskite layer and hole transport layer and blocks the electron transfer from CsPbI_(3) perovskite photoactive layer to the hole transport layer.As a result,the performance of CsPbI_(3) PSCs is well improved to 17.87%for power conversion efficiency(PCE)with an ultra-high fill factor(FF)of 0.84.In addition,the PyI mole-cule modified CsPbI_(3) perovskite devices exhibit excellent stability,which remains its initial PCE almost unchanged after aging for 35 days under the dry air atmosphere(temperature:20℃–30℃,control relative humid-ity(RH):<10%). | Qixian Zhang Yi Guo Huicong Liu Weiping Li Liqun Zhu Haining Chen | 2023 | Journal of Renewable Materials2023，11，8： | 0 |
| 14 | Regional source contributions to fine particulate matter of less studied cities in Beijing-Tianjin-Hebei region in 2017显示文摘Located in the central area of the North China Plain, the Beijing-Tianjin-Hebei region experiences severe air pollution, especially for Hebei province with five cities among the top 10 cities with the worst air quality nationwide. However, less studies have investigated local and regional contributions to cities in Hebei in comparison to Beijing and Tianjin. In this study, a source-oriented version of the Community Multiscale Air Quality (CMAQ) model is used to quantify inter- and intra-province transport of PM_(2.5) in 11 cities within Hebei in 2017. PM_(2.5) and its components vary seasonally with high levels in winter and low levels in summer. Local contributions to total PM_(2.5) within cities are 23%–61%, while intra-province transport contributes 10%–30%, and inter-province transport contributes 23%–46%, with top contributors of Shandong (4%–22%), Henan (3%–15%) and Shanxi (2%–11%). The primary components in most cities are mainly from local sources (30%–80%), and the secondary components are mainly from inter-province contributions (30%–66%). Local sources have the highest contributions to total PM_(2.5) in Shijiazhuang (∼49%), followed by Shanxi (∼12%) and Xingtai (∼7%). Secondary components from local and intra-province emissions are the major cause of heavy pollution events. These results suggest that both local and regional joint control measures with neighboring cities and provinces are necessary for pollution reduction in Hebei cities. | Qixian Liu Mengyuan Zhang Pengfei Wang Kaiyu Chen Peng Wang Yi Zhang Baojun Zhang Hongliang Zhang | 2023 | Particuology2023，，11： | 0 |
| 15 | ESTIMATION OF OBJECT GRAVITY AND WRENCH EXERTED ON OBJECT USING MULTIFINGERED HAND WITH FORCE/TORQUE SENSORS显示文摘ESTIMATIONOFOBJECTGRAVITYANDWRENCHEXERTEDONOBJECTUSINGMULTIFINGEREDHANDWITHFORCE/TORQUESENSORSGuanYishengZhangQixianRoboticsR... | Guan, Yisheng Zhang, Qixian Li, Zexiang | 1998 | Chinese Journal of Mechanical Engineering1998，11，2： | 0 |
| 16 | Erratum to:Effects of redox-active interlayer anions on the oxygen evolution reactivity of NiFe-layered double hydroxide nanosheets显示文摘 | Daojin Zhou Zhao Cai Yongmin Bi Weiliang Tian Ma Luo Qian Zhang Qian Zhang Qixian Xie Jindi Wang Yaping Li Yun Kuang Xue Duan Michal Bajdich Samira Siahrostami Xiaoming Sun | 2020 | Nano Research2020，13，1： | 0 |
| 17 | Synthetic anti-angiogenic genomic therapeutics for treatment of neovascular age-related macular degeneration显示文摘In light of the intriguing potential of anti-angiogenic approach in suppressing choroidal neovascularization, we attempted to elaborate synthetic gene delivery systems encapsulating anti-angiogenic plasmid DNA as alternatives of clinical antibody-based therapeutics. Herein, block copolymer of cyclic Arg-Gly-Asp-poly(ethylene glycol)-poly(lysine-thiol) [RGD-PEG-PLys(thiol)] with multifunctional components was tailored in manufacture of core-shell DNA delivery nanoparticulates. Note that the polycationic PLys segments were electrostatically complexed with anionic plasmid DNA into nanoscaled core, and the tethered biocompatible PEG segments presented as the spatial shell(minimizing non-specific reactions in biological milieu). Furthermore, the aforementioned self-assembly was introduced with redox-responsive disulfide crosslinking due to the thiol coupling. Hence, reversible stabilities, namely stable in extracellular milieu but susceptible to disassemble for liberation of the DNA payloads in intracellular reducing microenvironment, were verified to facilitate transcellular gene transportation. In addition, RGD was installed onto the surface of the proposed self-assemblies with aim of targeted accumulation and internalization into angiogenic endothelial cells given that RGD receptors were specifically overexpressed on their cytomembrane surface. The proposed anti-angiogenic DNA therapeutics were validated to exert efficient expression of anti-angiogenic proteins in endothelial cells and elicit potent inhibition of ocular neovasculature post intravitreous administration. Hence, the present study approved the potential of gene therapy in treatment of choroidal neovascularization. In light of sustainable gene expression properties of DNA therapeutics, our proposed synthetic gene delivery system inspired prosperous potentials in long-term treatment of choroidal neovascularization, which should be emphasized to develop further towards clinical translations. | Jing Wang Xiang Shi Qiyu Bo Hong Wang Fang Wei Jun Liu Hao Wang Liuwei Zhang Yan Qi Zhen Li Qixian Chen Xiaodong Sun | 2021 | Asian Journal of Pharmaceutical Sciences2021，16，5： | 0 |
| 18 | Activation of pyroptosis by specific organelle-targeting photodynamic therapy to amplify immunogenic cell death for anti-tumor immunotherapy显示文摘Pyroptosis,a unique lytic programmed cell death,inspired tempting implications as potent anti-tumor strategy in pertinent to its potentials in stimulating anti-tumor immunity for eradication of primary tumors and metastasis.Nonetheless,rare therapeutics have been reported to successfully stimulate pyroptosis.In view of the intimate participation of reactive oxygen species(ROS)in stimulating pyroptosis,we attempted to devise a spectrum of well-defined subcellular organelle(including mitochondria,lysosomes and endoplasmic reticulum)-targeting photosensitizers with the aim of precisely localizing ROS(produced from photosensitizers)at the subcellular compartments and explore their potentials in urging pyroptosis and immunogenic cell death(ICD).The subsequent investigations revealed varied degrees of pyroptosis upon photodynamic therapy(PDT)towards cancerous cells,as supported by not only observation of the distinctive morphological and mechanistic characteristics of pyroptosis,but for the first-time explicit validation from comprehensive RNA-Seq analysis.Furthermore,in vivo anti-tumor PDT could exert eradication of the primary tumors,more importantly suppressed the distant tumor and metastatic tumor growth through an abscopal effect,approving the acquirement of specific anti-tumor immunity as a consequence of pyroptosis.Hence,pyroptosis was concluded unprecedently by our proposed organelles-targeting PDT strategy and explicitly delineated with molecular insights into its occurrence and the consequent ICD. | Shuang Zeng Chen Chen Liuwei Zhang Xiaosheng Liu Ming Qian Hongyan Cui Jingyun Wang Qixian Chen Xiaojun Peng | 2023 | Bioactive Materials2023，，7： | 0 |
| 19 | OPTIMAL CONTROL OF REDUNDANT ROBOTS WITH LOCAL DEGREES OF FREEDOM显示文摘A kinematically redundant robot, with more degrees of freedom than re-quired to complete a desired task, can be usefu1 because of its inherent kinematics flexibili-ty and dynamic performance. lt is very difficu1t, however, to implement optimal redun-dancy control, while simultaneously taking into account hath kinematics and dynamics.To realize dua1-optimization control, a new redundant robot mechanism with local degreesof freedom is introduced, and its kinematics and dynamics features are investigated. Simu-lation results demonstrate the effectiveness of the proPosed method. | Li Luya Zhang Qixian Yang Zongxu(Research Institute of Robotics, Beijing University of Aeronauticsand Astronautics, Beijing, 100083, China)William A. Gruver(Simon Fraser University, Burnaby, B. C. Canada, V5A 1S6) | 1997 | Chinese Journal of Aeronautics1997，10，1： | 0 |
| 20 | Comparative Study on Miao Medicine and Bamboo and Silk Medicine显示文摘 | Wang Qixian Zhang Yang | 2015 | Psychology Research2015，5，12： | 0 |
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