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| 1 | Alkaloid profiling of the traditional Chinese medicine Rhizoma corydalis using high performance liquid chromatography-tandem quadrupole time-of-flight mass spectrometry显示文摘Since alkaloids are the major active constituents of Rhizoma corydalis(RC),a convenient and accurate analytical method is needed for their identification and characterization.Here we report a method to profile the alkaloids in RC based on liquid chromatography-tandem quadrupole time-of-flight mass spectrometry(LC–Q-TOF-MS/MS).A total of 16 alkaloids belonging to four different classes were identified by comparison with authentic standards.The fragmentation pathway of each class of alkaloid was clarified and their differences were elucidated.Furthermore,based on an analysis of fragmentation pathways and alkaloid profiling,a rapid and accurate method for the identification of unknown alkaloids in RC is proposed.The method could also be useful for the quality control of RC. | Mingqian Sun Jianxun Liu Chengren Lin Lan Miao Li Lin | 2014 | Acta Pharmaceutica Sinica B2014，4，3： | 14 |
| 2 | Effect of Heat Treatment on Microstructures and Mechanical Properties of Hot-Dip Galvanized DP Steels显示文摘In order to simulate the hot-dipped galvanizing of dual-phase(DP) steel(wt%) 0.15C–0.1Si–1.7Mn, the DP steels were obtained by different annealing schedules. The effects of soaking temperature, time, and cooling rate on ferrite grain, volume fraction of martensite, and the fine structure of martensite were studied. Results showed that the yield strength(YS) of DP steel is sensitive to annealing schedule, while total elongation has no noticeable dependence on annealing schedule. Increasing soaking temperature from 790 to 850 °C, the YS is the lowest at soaking temperature of 850 °C. Changing CR1 from 6 to 24 °C/s, the YS is the highest when CR1 is 12 °C/s. Increasing soaking time from 30 to100 s, the YS is the lowest at soaking time of 100 s. Besides, it was found that sufficient movable dislocations within ferrite grains and high martensite volume fraction can eliminate yield point elongation, decrease the YS, and increase ultimate tensile strength. Through TEM observations, it was also found that increasing annealing temperature promotes austenite transformation into twin martensite, and increases volume fraction of martensite at sufficient cooling rate. With increasing the martensite volume fraction, the deformation substructure in the ferrite is well developed. | Enbao Pan Hongshuang Di Guangwei Jiang Chengren Bao | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，3： | 8 |
| 3 | Cuprizone-induced demyelination in mice: age-related vulner-ability and exploratory behavior deficit显示文摘Schizophrenia is a mental disease that mainly affects young individuals (15 to 35 years old) but its etiology remains largely undefined. Recently, accumulating evidence indicated that demyelination and/or dysfunction of oligodendrocytes is an important feature of its pathogenesis. We hypothesized that the vulnerability of young individuals to demyelination may contribute to the onset of schizophrenia. In the present study, three different age cohorts of mice, i.e. juvenile (3 weeks), young-adult (6 weeks) and middle-aged (8 months), were subjected to a 6-week diet containing 0.2% cuprizone (CPZ) to create an animal model of acute demyelination. Then, age-related vulnerability to CPZ-induced demyelination, behavioral outcomes, and myelination-related molecular biological changes were assessed. We demonstrated: (1) CPZ treatment led to more severe demyelination in juvenile and young-adult mice than in middle-aged mice in the corpus callosum, a region closely associated with the pathophysiology of schizophrenia; (2) the higher levels of demyelination in juvenile and young-adult mice were correlated with a greater reduction of myelin basic protein, more loss of CC-1-positive mature oligodendrocytes, and higher levels of astrocyte activation; and (3) CPZ treatment resulted in a more prominent exploratory behavior deficit in juvenile and young-adult mice than in middle-aged mice. Together, our data demonstrate an age-relatedvulnerability to demyelination with a concurrent behavioral deficit, providing supporting evidence for better understanding the susceptibility of the young to the onset of schizophrenia. | Hongkai Wang Chengren Li Hanzhi Wang Feng Mei Zhi Liu Hai-Ying Shen Lan Xiao | 2013 | Neuroscience Bulletin2013，29，2： | 4 |
| 4 | A 15-year analysis of molecular epidemiology of avian infectious bronchitis coronavirus in China显示文摘 | Zongxi Han Chuyang Sun Baolong Yan Xiaonan Zhang Yu Wang Chengren Li Qingxia Zhang Yazhen Ma Yuhao Shao Qiaoran Liu Xiangang Kong Shengwang Liu | 2010 | Infection Genetics and Evolution2010，，1： | 2 |
| 5 | A 15-year analysis of molecular epidemiology of avian infectious bronchitis coronavirus in China显示文摘 | Zongxi Han Chuyang Sun Baolong Yan Xiaonan Zhang Yu Wang Chengren Li Qingxia Zhang Yazhen Ma Yuhao Shao Qiaoran Liu Xiangang Kong Shengwang Liu | 2010 | Infection Genetics and Evolution2010，，1： | 2 |
| 6 | A-B 7300 CNC Machine Tool Rebuilding显示文摘A-B7300CNCMachineToolRebuildingLiChengrenMarineEngineeringInstitute,NorthwesternPolytechnicalUniversityXi’an,710072,P.R.China... | Li Chengren Marine\ Engineering Institute, Northwestern Polytechnical University Xi’an, 710072, P.R.China | 1997 | International Journal of Plant Engineering and Management1997，2，4： | 1 |
| 7 | An efficient and economical culture approach for the enrichment of purified oligodendrocyte progenitor cells显示文摘 | Jianqin Niu Lingyun Wang Shubao Liu Chengren Li Jiming Kong Hai-Ying Shen Lan Xiao | 2012 | Journal of Neuroscience Methods2012，，1： | 1 |
| 8 | Stylized rendering using samples of a painted image 显示文摘 | Yan Chengren Chi Mingte Lee Tongyee | 2008 | IEEE Transactions on Visualization and Computer Graphics2008，14，2： | 1 |
| 9 | Frequency upconversion luminescence in Yb3+/Era+ codoped silicate glass 显示文摘 | Li Jianyong Li Chengren Li Shufeng | 2006 | Journal of Rare Earths2006，24，2： | 1 |
| 10 | Human Motion Synthesis with Optimization‐based Graphs显示文摘 | ChengRen LimingZhao AllaSafonova | 2010 | Computer Graphics Forum2010，，2： | 1 |
| 11 | Simple and Efficient Cultivation Technology for the Peanut under the Standardization Mode of Single-seed Sowing显示文摘Single-seed sowing is a new,simple and efficient cultivation mode for peanut that realized from cultivation of healthy individual and construction of high-yielding population. The cultivation mode has the obvious advantages in uniform seedling,strong sprouting,seed saving and cost saving,thus it is considered as one of the effective ways for high-yield and high-efficient peanut cultivation in China in the future.Through integrating with other high-efficiency and simple cultivation measures,the single-seed sowing technology system has made conforming to China's national standardization cultivations of peanut and the technology was already applied in the main producing areas of peanut and gained the significant efficiency and abroad application prospects. Based on many years of researches in single-seed sowing technology,high-efficiency fertilization and scientific chemical control in the research team,by combining with the latest research results in plant protection and machinery,this paper described the key points and matters needing attentions from variety selection,planting mode,rational fertilization,planting specifications and field management. | Hao FENG Zhengfeng WU Jiancai LIN Tianyi YU Yongmei ZHENG Xuewu SUN Pu SHEN Chengren SHI Caibin WANG | 2016 | Asian Agricultural Research2016，8，6： | 1 |
| 12 | Friction and wear properties of casting in-situ silicon particle reinforced ZA27 composites显示文摘The effects of silicon particle content and testing temperature on friction and wear properties of casting in-situ silicon particle reinforced ZA27 composites were investigated.The wear mechanisms were mainly discussed by observations of both worn surfaces and their side views.The results indicated that the variations of wear resistance with increasing of silicon particle content,at all of the testing temperatures applied,showed a similar tendency with a manner of non-monotonous change.It was surprised that the wear resistance decreased with the increase of silicon particle content from 2 vol.%to 5 vol.%,while it increased when the content was less than 2 vol.%or more than 5 vol.%.Similarly,the friction coefficient also did not change monotonously.The dominative wear mechanism changed from a relatively severe regime of plastic deformation accompanied by adhesion wear to a mild regime of smear,then to a very severe regime of severe plastic deformation induced wear,and finally again to a relatively mild regime of smear accompanied by abrasive wear as the silicon content increased.The wear resistance always decreased with elevating testing temperature,but the decrease ranges were different for the composites with different silicon contents.The friction coefficients changed irregularly for the different composites with the increase of testing temperature.Correspondingly,the wear mechanism alternated from a mild regime of smear accompanied by abrasive wear to a severe regime of plastic deformation accompanied by adhesion wear. | Chen Tijun Yuan Chengren Fu Mingfeng Ma Ying LiYuandong Hao Yuan | 2009 | China Foundry2009，6，1： | 1 |
| 13 | Molecular Characterization and Pathogenicity of Infectious Bronchitis Coronaviruses: Complicated Evolution and Epidemiology in China Caused by Cocirculation of Multiple Types of Infectious Bronchitis Coronaviruses显示文摘 | Liu Shengwang Zhang Xiaonan Wang Yu Li Chengren Han Zongxi Shao Yuhao Li Huixin Kong Xiangang | 2009 | Intervirology2009，，4： | 1 |
| 14 | Expand Friendly Cooperation and Build a Harmonious World显示文摘As early as in the beginning of the 1980's,the Chinese Association for International Understanding (CAFIU) started exchanges with the Friendrich Ebert Stiftung (FES). Since FES set up its Beijing office in 1987,fruitful cooperation has been conducted between FES and CAFIU,and other relevant parties of the Chinese side. Over the years,FES has made positive efforts and great contributions for deepening and developing understanding and friendship between the Chinese people and the German people,and for promoting the relations between the two countries and two parties,which we highly appreciate. | Li Chengren | 2007 | International Understanding2007，，1： | 0 |
| 15 | Build Consensus and Deepen Cooperation显示文摘(1) Build consensus and promote the construction of East Asian Community.East Asia is one of the most economically dynamic and promising regions in the world. With | Li Chengren Ma Jingjing | 2010 | International Understanding2010，，1： | 0 |
| 16 | Keynote Speech at the Opening Ceremony of the 2012 Understanding and Cooperation Dialogue显示文摘正Ladies and gentlemen, dear friends, On behalf of the sponsor organization-Chinese Association for International Understanding (CAFIU), let me begin with extending my warm welcome to all distinguished guests and delegates from home and abroad present at the 2012 Understanding and Cooperation Dialogue, as well as my | Li Chengren Ma Jingjing | 2012 | International Understanding2012，，2： | 0 |
| 17 | Speech at the Seminar on Sino-Japan Strategic and Mutually Beneficial Relationship显示文摘This year marks the 35th anniversary of the normalization of Sino-Japan relations. Thedevelopment of Sino-Japan bilateral ties is now facing both opportunities and challenges. In | Li Chengren | 2007 | International Understanding2007，，3： | 0 |
| 18 | Speech at the FES Thanksgiving Reception显示文摘Distinguished President Anke Fuchs,Ladies and gentlemen,Dear friends,On behalf of the Chinese Association for International Understanding, I would like | Li Chengren Wang Xiaoyi | 2010 | International Understanding2010，，2： | 0 |
| 19 | Work Report to the 10^(th) Council Meeting of CAFIU (Extracts)显示文摘(April 24, 2009)Entrusted by President Li Guixian and on behalf of the 9th council of CAFIU, I now submit a report onthe work of CAFIU for your examination | Li Chengren Wang Xiaoyi | 2009 | International Understanding2009，，2： | 0 |
| 20 | Address at the Opening Ceremony of the Seminar on “Global Security System under the Background of International Financial Crisis”显示文摘(March 9, 2009)Ladies and gentlemen, friends, Today, the 8th Sino-German Seminar on Comprehensive Security opens here. On behalf of CAFIU, I would like to extend our warm welcome to all the | Li Chengren | 2009 | International Understanding2009，，2： | 0 |
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