|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Numeration and type synthesis of 3-DOF orthogonal translational parallel manipulators显示文摘Low-degree-of-freedom (Low-DOF) parallel manipulators (PMs) have drawn extensive interests, particularly in type synthesis in which two main formal approaches were established by using the reciprocal screw system theory and Lie group theory. This paper aims at numeration and type synthesis of orthogonal translational parallel manipulators (OTPMs) by resorting to an integration of the group- based method and graphical representation of the topology. For this purpose, the concept of Cartesian DOF-characteristic matrix, orig- inated from displacement subgroup and displacement submanifold, is proposed. A new approach based on the combination of the atlas of Cartesian DOF-characteristic matrix and the displacement group-theoretic method is addressed for both exhaustive classi cation and type synthesis of OTPMs. The proposed approach is prone to construct an orthogonal structure and is easy to realize the complete clas- si cation and exhaustive enumeration of this class of low-DOF PMs. | Jingjun Yu Jian S. Dai Shusheng Bi Guanghua Zong | 2008 | Progress in Natural Science:Materials International2008，18，5： | 10 |
| 2 | A unified approach to type synthesis of both rigid and flexure parallel mechanisms显示文摘Type synthesis of both rigid and compliant parallel mechanisms has become a hot issue in the field of mechanisms and robotics research in recent years. A unified approach to type synthesis of the two classes of mechanisms, however, has not been referred and investigated up to date. Based on the state-of-art analysis for several major type synthesis approaches related to rigid and compliant mechanisms, respectively, it proves feasible to establish a unified methodology for type synthesis of these two classes of mechanisms. That is a synthesis philosophy in terms of the hierarchy mapping between mathematic, physical, and mechanical building blocks in the framework of screw theory, as addressed in this paper. The key point of the proposed method lies in establishing the mapping among three different building blocks (i.e. geometric building block, kinematic or constraint building block, and mechanical building block). As a result, it makes the whole type synthesis process simple and visible. By using the proposed method, two examples are taken to verify the effectiveness for the type synthesis of both rigid and flexure mechanisms. The content of this paper may provide a theoretical frame for constructing a visualized algorithm or software about the unified type synthesis (or conceptual design) of both rigid and flexure parallel mechanisms. | YU JingJun LI ShouZhong PEI Xu BI ShuSheng ZONG GuangHua | 2011 | Science China(Technological Sciences)2011，54，5： | 8 |
| 3 | Novel Annulus-shaped Flexure Pivot in Rotation Application and Dimensionless Design显示文摘Large-deflection flexure pivot is widely used in high precision rotation application, but there are less flexure configurations and simple and convenient design methods. This paper presents a novel large-deflection curved-compliant annulus-shaped flexure pivot composed of six curved beam flexure elements. It can offer more than 10°angular stroke theoretically. Firstly, main-motion pseudo-rigid-body method is introduced to establish the flexure pivot model. Although pseudo-rigid-body method can be used to analyze the large-deformation flexure pivot performance, the method is definitely a laborious and difficult task for designing this novel flexure pivot. In order to simply the designing process, dimension-design graphs based on the parametric models and finite element analysis is presented. Using the dimension-design method as a tool, the designers can determine the optimal geometry rapidly, based on the stiffness and rotation demands of an annulus-shaped flexure pivot. Finally, dimension-design graph examples are given whose primary design aims to achieve a rotation stroke of annulus-shaped flexure pivot. The finite element analysis results show that the relative designing error between anticipative rotation stroke and graph design result is less than 4%. The dimensionless method used in designing annulus-shaped flexure pivot can reduce design process in both time and complexity. The novel annulus-shaped flexure pivot and dimension-design method are helpful supplement to configuration and design method of large-deflection flexure pivot. | BI Shusheng ZHAO Shanshan SUN Minglei YU Jingjun ZONG Guanghua | 2009 | Chinese Journal of Mechanical Engineering2009，22，6： | 7 |
| 4 | Design of Compliant Straight-line Mechanisms Using Flexural Joints显示文摘Straight-line compliant mechanisms are important building blocks to design a linear-motion stage,which is very useful in precision applications.However,only a few configurations of straight-line compliant mechanisms are applicable.To construct more kinds of them,an approach to design large-displacement straight-line flexural mechanisms with rotational flexural joints is proposed,which is based on a viewpoint that the straight-line motion is regarded as a compromise of rigid and compliant parasitic motion of a rotational flexural joint.An analytical design method based on the Taylor series expansion is proposed to quickly obtain an approximate solution.To illustrate and verify the proposed method,two kinds of flexural joints,cross-axis hinge and leaf-type isosceles-trapezoidal flexural(LITF)pivot are used to reconstruct straight-line flexural mechanisms.Their performances are obtained by analytic and FEA method respectively.The comparisons of the results show the accuracy of the approach.Both examples show that the proposed approach can convert a large-deflection flexural joint into approximate straight-line mechanism with a high linearity that is higher than 5 000within 5 mm displacement.This can lead to a new way to design,analyze or optimize straight-line flexure mechanisms. | PEI Xu YU Jingjun ZONG Guanghua BI Shusheng | 2014 | Chinese Journal of Mechanical Engineering2014，27，1： | 3 |
| 5 | S Phase Cell Percentage Normalized BrdU Incorporation Rate, a New Parameter for Determining S Arrest显示文摘In this study,a new parameter,S phase cell percentage(S fraction)normalized BrdU(SFN-BrdU)incorporation rate,was introduced to detect S arrest.The results showed a positive linear correlation between the BrdU incorporation rate and the S fraction in unperturbed 16HBE cells.Theoretical analysis indicated that only S | ZHAO Peng FU Juan Ling YAO Bi Yun JIA Yong Rui ZHOU Zong Can | 2014 | Biomedical and Environmental Sciences2014，27，3： | 2 |
| 6 | Face and object visual working memory deficits in first-episode schizophrenia correlate with multiple neurocognitive performances显示文摘Background Working memory(WM)deficit is considered a core feature and cognitive biomarker in patients with schizophrenia.Several studies have reported prominent object WM deficits in patients with schizophrenia,suggesting that visual WM in these patients extends to non-spatial domains.However,whether non-spatial WM is similarly affected remains unclear.Aim This study primarily aimed to identify the processing of visual object WM in patients with first-episode schizophrenia.Methods The study included 36 patients with first-episode schizophrenia and 35 healthy controls.Visual object WM capacity,including face and house WM capacity,was assessed by means of delayed matching-to sample visual WM tasks,in which participants must distribute memory so that they can discriminate a target sample.We specifically examined their anhedonia experience by the Temporal Experience of Pleasure Scale and the Snaith-Hamilton Pleasure Scale.Cognitive performance was measured by the Repeatable Battery for the Assessment of Neuropsychological Status(RBANS).Results Both face and house WM capacity was significantly impaired in patients with schizophrenia.For both tasks,the performance of all the subjects was worse under the high-load condition than under the low-load condition.We found that WM capacity was highly positively correlated with the performance on RBANS total scores(r=−0.528,p=0.005),RBANS delayed memory scores(r=−0.470,p=0.013),RBANS attention scores(r=−0.584,p=0.001),RBANS language scores(r=−0.448,p=0.019),Trail-Making Test:Part A raw scores(r=0.465,p=0.015)and simple IQ total scores(r=−0.538,p=0.005),and correlated with scores of the vocabulary test(r=−0.490,p=0.011)and scores of the Block Diagram Test(r=−0.426,p=0.027)in schizophrenia.No significant correlations were observed between WM capacity and Positive and Negative Syndrome Scale symptoms.Conclusions Our research found that visual object WM capacity is dramatically impaired in patients with schizophrenia and is strongly correlated with other measures of cognition,suggesting a mechanism that is critical in explaining a portion of the broad cognitive deficits observed in schizophrenia. | Yi Liu Taiyong Bi Bei Zhang Qijie Kuang Haijing Li Kunlun Zong Jingping Zhao Yuping Ning Shenglin She Yingjun Zheng | 2021 | General Psychiatry2021，34，1： | 2 |
| 7 | Regioselectivity-reversal in acylation of 6-azauridine catalyzed by Burkholderia cepacialipase显示文摘 | Wang ZY Bi YH Zong MH | 2012 | Biotechnol Lett2012，34，1： | 1 |
| 8 | Enanti oseparation of paroxetine intermediate on an anaylase-derived chiral stationary phase by supercritical fluid chromatography 显示文摘 | SU Bao-gen BAO Zong bi XING Hua bin el al | 2009 | Journal of Chromatography A2009，1216，： | 1 |
| 9 | Cellular Fatty Acids as Chemical Markers for Differentiation of Acinetobacter baumannii and Acinetobacter calcoaceticus显示文摘Objective Gas chromatography (GC) was used to investigate the cellular fatty acid (CFA) composition of 141 Acinetobacter baumannii and 32 A. calcoaceticus isolates from different locations in China and to find chemical markers to differentiate these two closely related bacteria. Methods Whole cell fatty acid methyl esters (FAMEs) were obtained by saponification, methylation, and extraction for GC analysis, followed by a standardized Microbial Identification System (MIS) analysis. Results All A. baumannii and A. calcoaceticus strains contained some major fatty acids, namely, 18:1 ω9c, 16:0, Sum In Feature 3, 12:0, 17:1ω8c, 3-OH-12:0, 17:0, Sum In Feature 2, 2-OH-12:0, and 18:0 compounds. Although most of the total CFAs are similar between A. baumannii and A. calcoaceticus strains, the ratios of two pairs of CFAs, i.e., Sum In Feature 3/18:1 ω9c versus 16:0/18:1 ω9c and Sum In Feature 3/18:1 ω9c versus unknown 12.484/18:1 ω9c fatty acids, could differentiate these two closely related bacteria. A. baumannii could be easily classified into two subgroups by plotting some ratios such as Sum In Feature 3/16:0 versus 17:0 and Sum In Feature 3/2-OH-12:0 versus17:0 fatty acids. Conclusion The ratios of some CFAs could be used as chemical markers to distinguish A. baumannii from A. calcoaceticus. | YANG Chao GUO Zhao Biao DU Zong Min YANG Hui Ying BI Yu Jing WANG Gui Qin TAN Ya Fang | 2012 | Biomedical and Environmental Sciences2012，25，6： | 1 |
| 10 | An HPLC method for the determination and pharmacokinetic study of cinnamic acid in the plasma of rats having taken the traditional Chinese medicinal preparation Ling-Gui-Zhu-Gan decoction显示文摘 | Song Zong hua Bi Kaishun Luo Xu | | Journal of Chromatogr Sci0，，： | 1 |
| 11 | Construction of human ScFv phage display library against ovarian tumor显示文摘 | Xia J Bi H Yao Q Qu S Zong Y | 2006 | J Huazhong Univ Sci Technolog Med Sci2006，26，： | 1 |
| 12 | Research on wavelet based autofocus evaluation in micro-vision显示文摘 | ZONG G H SUN M L BI S S | | 0，，03： | 1 |
| 13 | The genomic characteristics and pathogenicity of a mammalian orthoreovirus within a new lineage from wild pika in plateau显示文摘Emerging and re-emerging viruses from wild animals have seriously threatened the health of humans and domesticated animals in recent years.Herein,we isolated a new mammalian orthoreovirus(MRV),Pika/MRV/GCCDC7/2019(PMRV-GCCDC7),in the Qinghai-Tibet Plateau wild pika(Ochotona curzoniae).Though the PMRVGCCDC7 shows features of a typical reovirus with ten gene segments arranged in 3:3:4 in length,the virus belongs to an independent evolutionary branch compared to other MRVs based on phylogenetic tree analysis.The results of cellular susceptibility,species tropism,and replication kinetics of PMRV-GCCDC7 indicated the virus could infect four human cell lines(A549,Huh7,HCT,and LoVo)and six non-human cell lines,including Vero-E6,LLCMK2,BHK-21,N2a,MDCK,and RfKT cell,derived from diverse mammals,i.e.monkey,mice,canine and bat,which revealed the potential of PMRV-GCCDC7 to infect a variety of hosts.Infection of BALB/c mice with PMRVGCCDC7 via intranasal inoculation led to relative weight loss,lung tissue damage and inflammation with the increase of virus titer,but no serious respiratory symptoms and death occurred.The characterization of the new reovirus from a plateau-based wild animal has expanded our knowledge of the host range of MRV and provided insight into its risk of trans-species transmission and zoonotic diseases. | Kexin Zong Yuanyuan Guo Jingdong Song Maoshun Liu Junfeng Hao Jie Zhang Xin Li Shiyan Zhu Shuting Huo Ziqian Xu Peipei Liu Yingze Zhao Yuhai Bi Jiapeng Qu George F.Gao Jun Liu | 2023 | Virologica Sinica2023，38，6： | 0 |
| 14 | An Improved Immune Clone Selection Algorithm for Parameters Optimization of Marine Electric Power System Stabilizer显示文摘In themarine electric power system,the marine generators will be disturbed by the large change of loads or the fault of the power system.The marine generators usually installed power system stabilizers to damp power system oscillations through the excitation control.This paper proposes a novel method to obtain optimal parameter values for Power System Stabilizer(PSS)to suppress low-frequency oscillations in the marine electric power system.In this paper,a newly developed immune clone selection algorithm was improved from the three aspects of the adaptive incentive degree,vaccination,and adaptive mutation strategies.Firstly,the typical PSS implementation type of leader-lag structure was adopted and the objective function was set in the optimization process.The performance of PSS tuned by improved immune clone selection algorithm was compared with PSS tuned by basic immune clone selection algorithm(ICSA)under various operating conditions and disturbances.Then,an improved immune clone selection algorithm(IICSA)optimization technique was implemented on two test systems for test purposes.Based on the simulations,it is found that an improved immune clone selection algorithm demonstrates superiority over the basic immune clone selection algorithm in getting a smaller number of iterations and fast convergence rates to achieve the optimal parameters of the power system stabilizers.Moreover,the proposed approach improves the stability and dynamic performance under various loads conditions and disturbances of the marine electric power system. | Zong Bi Weifeng Shi Tiewei Song | 2022 | Energy Engineering2022，119，3： | 0 |
| 15 | Overview of the LAMOST survey in the first decade显示文摘The Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST),also known as the Guoshoujing Telescope,is a major national scientific facility for astronomical research located in Xinglong,China.Beginning with a pilot survey in 2011,LAMOST has been surveying the night sky for more than 10 years.The LAMOST survey covers various objects in the Universe,from normal stars to peculiar ones. | Hongliang Yan Haining Li Song Wang Weikai Zong Haibo Yuan Maosheng Xiang Yang Huang Jiwei Xie Subo Dong Hailong Yuan Shaolan Bi Yaoquan Chu Xiangqun Cui Licai Deng Jianning Fu Zhanwen Han Jinliang Hou Guoping Li Chao Liu Jifeng Liu Xiaowei Liu Ali Luo Jianrong Shi Xuebing Wu Haotong Zhang Gang Zhao Yongheng Zhao | 2022 | The Innovation2022，3，2： | 0 |
| 16 | LAMOST Time-Domain survey:first results of four K2 plates显示文摘From Oct.2019 to Apr.2020,LAMOST performed a time-domain(TD)spectroscopic survey of four K2 plates with both low-and medium-resolution observations.The low-resolution spectroscopic survey acquired 282 exposures(≈46.6 h)over 25 nights,yielding a total of about 767000 spectra,and the medium-resolution survey took 177 exposures(≈49.1 h)over 27 nights,collecting about 478000 spectra.More than 70%/50%of low-resolution/medium-resolution spectra have signal-to-noise ratio higher than 10.We determine stellar parameters(e.g.,Teff,log g,[Fe/H])and radial velocity(RV)with different methods,including LASP,DD-Payne and SLAM.In general,these parameter estimations from different methods show good agreement,and the stellar parameter values are consistent with those of APOGEE.We use the Gaia DR2 RV values to calculate a median RV zero point(RVZP)for each spectrograph exposure by exposure,and the RVZP-corrected RVs agree well with the APOGEE data.The stellar evolutionary and spectroscopic masses are estimated based on the stellar parameters,multi-band magnitudes,distances and extinction values.Finally,we construct a binary catalog including about 2700 candidates by analyzing their light curves,fitting the RV data,calculating the binarity parameters from medium-resolution spectra and cross-matching the spatially resolved binary catalog from Gaia EDR3.The LAMOST TD survey is expected to represent a breakthrough in various scientific topics,such as binary systems,stellar activity,stellar pulsation,etc. | Song Wang Hao-Tong Zhang Zhong-Rui Bai Hai-Long Yuan Mao-Sheng Xiang Bo Zhang Wen Hou Fang Zuo Bing Du Tan-Da Li Fan Yang Kai-Ming Cui Yi-Lun Wang Jiao Li Mikhail Kovalev Chun-Qian Li Hao Tian Wei-Kai Zong Heng-Geng Han Chao Liu A-Li Luo Jian-Rong Shi Jian-Ning Fu Shao-Lan Bi Zhan-Wen Han Ji-Feng Liu | 2021 | Research in Astronomy and Astrophysics2021，21，11： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员