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| 1 | Numerical simulation for the coupling effect of local atmospheric circulations over the area of Beijing,Tianjin and Hebei Province显示文摘Using the model system MM5.V3 and multi-layer grid nesting technique, we have done a multi-scale numerical simulation over the area of Beijing, Tianjin and Hebei Province to analyze the temperature and wind field there and study its local circulations. The results show a coupling effect of Urban Heat Island Circulation (UHIC), Mountain Valley Breeze (MVB) and Sea Land Breeze (SLB) occurs in this area when the synoptic system is weak. The SLB can penetrate deep into the mainland for about 200 km when it is blooming. MVB can extend to south and cover almost the whole plain area in Beijing. Both MVB and SLB are diurnal periodical; meanwhile the phase of MVB drops behind that of SLB for about six hours. As a local circulation, the UHIC weakens the two circulations above, and it also has a diurnal period. As a result, the coupling effect of circulations reveals not only different features in spring-summer period and autumn-winter period in a year but also the difference between early morn- ing to noonday and afternoon to night in a day. We noted the diffusion of contamination over the area around Beijing, and found the steady presence of a transport routine of contamination over North-China throughout the year caused by the Coupling Effect mentioned above. This find is important for studying the environment pollution in this area. | LIU ShuHua LIU ZhenXin LI Ju WANG YinChun MA YanJun SHENG Li LIU HePing LIANG FuMing XIN GuoJun WANG JianHua | 2009 | Science China Earth Sciences2009，52，3： | 20 |
| 2 | Effects of Nb Content on Yield Strength of NiTiNb Alloys in Martensite State显示文摘采用SEM,EDS,DSC和拉伸实验等方法测试两种单相NiTiNb合金(Ni50Ti48Nb2和Ni49.5Ti46.5Nb4),以分析Nb原子在NiTi相中的固溶量对合金由马氏体自协作而导致的屈服强度的影响。根据实验结果,推断Nb原子固溶量对NiTi相的屈服强度负相关。本次研究与前期实验结果相比较,提出了一个有关Nb含量对NiTiNb合金的马氏体态屈服强度有两个共同作用机制的假设.一个是Nb原子固溶弱化机制,另一个是Nb相复合强化机制。这个假设比较圆满的解释了(NiTi)50-0.5xNbx合金的马氏体态屈服强度随Nb含量的增加,先降低然后再大幅增加的实验结果。 | Xiao Fu Ma Guojun Zhao Xinqing Xu Huibin | 2009 | Chinese Journal of Aeronautics2009，22，6： | 11 |
| 3 | On the boundary slip of fluid flow显示文摘This paper presents a stress controlled boundary slip model and predicts the fluid-solid interface slip in a system of parallel sliding plates or a sphere approaching a smooth plane. The numerical simulation results are in striking agreement with the existing experimental observations. This model assumes that there is a limiting shear stress. No slip occurs if the surface shear stress is smaller than the limiting shear stress, and slip occurs when the surface shear stress equals it. It is found that boundary slip dramatically decreases the hydrodynamic pressure if the two squeezed surfaces have the same slip property. Finally, the hydrodynamic force reaches a saturation status and almost does not decrease any more. Compared with the no-slip solution, hydrodynamic force is found to decrease by over two orders in the case of boundary slip. When the squeezed surfaces have different slip properties, however, the hydrodynamic pressure is mainly controlled by the surface having a smaller surface limiting shear stress, and reduces more slowly compared with the case of two surfaces having the same slip property. Even when one of the surfaces has a zero surface limiting shear stress, a considerable hydrodynamic force still exists. | WU Chengwei MA Guojun | 2005 | Science China(Physics,Mechanics & Astronomy)2005，48，2： | 8 |
| 4 | Effect of ferrovanadium inoculation on microstructure and properties of high speed steel显示文摘The effect of ferrovanadium inoculation on the microstructure and properties of high speed steel (HSS) used for rolls was studied. The results showed that the as-cast eutectic carbide network tends to be broken after ferrovanadium inoculation, and the carbides are changed to rod-like or nodular shape. After heat treatment, the carbides in the inoculated HSS are spheroidized and distributed more uniformly in the matrix. The impact toughness of high speed steel with ferrovanadium inoculation is obviously improved. The action mechanism of ferrovanadium inoculation on the microstructure of the alloy is also discussed. | Zhang Xipeng Kou Guojun Wu Chunjing Gan Zhaiping Zhao Wanzi Chuan Xiangzhao Ma Ye | 2008 | China Foundry2008，5，2： | 6 |
| 5 | Bevacizumab biosimilar LY01008 compared with bevacizumab(Avastin)as first-line treatment for Chinese patients with unresectable,metastatic,or recurrent non-squamous non-small-cell lung cancer:A multicenter,randomized,double-blinded,phase Ⅲ trial显示文摘Background:Previous studies have demonstrated the preclinical pharmacological and toxicological consistency,and clinical pharmacokinetic equivalence of bevacizumab biosimilar LY01008 with reference bevacizumab(Avastin).This randomized controlled trial aimed to compare the efficacy and safety of LY01008 with Avastin in first-line treatment of Chinese patients with advanced or recurrent non-squamous non-small cell lung cancer(NSCLC).Methods:StageⅢB-ⅣNSCLC patients with evaluable lesions,good physical status,and adequate organ functions from 67 centers across China were randomized in a ratio of 1:1 to receive LY01008 or Avastin 15 mg/kg intravenously in combination with paclitaxel/carboplatin(combined treatment)for 4-6 cycles,followed by maintenance monotherapy with LY01008 until disease progression,intolerable toxicity,or death.The primary endpoint was objective response rate(ORR)in accordance with Response Evaluation Criteria in Solid Tumors(RECIST)version 1.1 confirmed by independent radiological review committees(IRRC).Secondary endpoints included disease control rate(DCR),duration of response(DoR),progression-free survival(PFS),overall survival(OS),and safety.This study was registered in Clinical Trials.gov(NCT03533127).Results:Between December 15^(th),2017,and May 15^(th),2019,a total of 649 patients were randomized to the LY01008(n=324)or Avastin(n=325)group.As of September 25th,2019 for primary endpoint analysis,589 patients received ORR evaluation,with a median number of combined treatment cycles of 5(range 1-6)andmedian duration of treatment of 3.0(range 0.0-5.1)months.ORRof responseevaluable patients in the LY01008 and Avastin groups were 48.5% and 53.0%,respectively.The stratified ORR ratio was 0.91(90%CI 0.80-1.04,within the prespecified equivalence margin of 0.75-1.33).Up to May 15^(th),2020,with a median follow-up of 13.6(range 0.8-28.4)months,no notable differences in DCR,median DoR,median PFS,median OS,and 1-year OS rate were observed between the LY01008 and Avastin groups.There were no clinically meaningful differences in safety and immunogenicity across treatment groups.Conclusions:LY01008 demonstrated similarity to Avastin in terms of efficacy and safety in Chinese patients with advanced or recurrent non-squamous NSCLC.LY01008 combined with paclitaxel/carboplatin is expected to become a new treatment option for unresectable,metastatic,LY01008 and Avastin groups.There were no clinically meaningful differences in safety and immunogenicity across treatment groups.Conclusions:LY01008 demonstrated similarity to Avastin in terms of efficacy and safety in Chinese patients with advanced or recurrent non-squamous NSCLC.LY01008 combined with paclitaxel/carboplatin is expected to become a new treatment option for unresectable,metastatic,or recurrent non-squamous NSCLC patients in the first-line setting. | Yuankai Shi Kaijian Lei Yuming Jia Bingqiang Ni Zhiyong He Minghong Bi Xicheng Wang Jianhua Shi Ming Zhou Qian Sun Guolei Wang Dongji Chen Yongqian Shu Lianke Liu Zhongliang Guo Yong Liu Junquan Yang Ke Wang Ke Xiao LinWu Tienan Yi Debin Sun Mafei Kang Tianjiang Ma Yimin Mao Jinsheng Shi Tiegang Tang Yan Wang Puyuan Xing Dongqing Lv Wangjun Liao Zhiguo Luo Bin Wang Xiaohong Wu Xiaoli Zhu Shuhua Han Qisen Guo Rongyu Liu Zhiwei Lu Jianyong Zhang Jian Fang Changlu Hu Yinghua Ji Guolong Liu Hong Lu Dedong Wu Junhong Zhang Shuyang Zhu Zheng Liu Wensheng Qiu Feng Ye Yan Yu Yanqiu Zhao Qinhong Zheng Jun Chen Zhanyu Pan Yiping Zhang Wenjuan Lian Bo Jiang Bo Qiu Guojun Zhang Hua Zhang Yanju Chen Yuan Chen Hongbing Duan Manxiang Li Shengming Liu Lijun Ma Hongming Pan Xia Yuan Xueli Yuan Yulong Zheng Emei Gao Li Zhao Shumin Wang Can Wu | 2021 | Cancer Communications2021，41，9： | 5 |
| 6 | Hydrodynamics of slip wedge and optimization of surface slip property显示文摘The hydrodynamic load support generated by a slip wedge of a slider bearing was studied. The surface slip property was optimized so that a maximum hydrodynamic load support could be obtained. A multi-linearity method was given for the slip control equation of two-dimensional (2-D) wall slip. We investigated 2-D wall slip and the hydrodynamics of a finite length bearing with any values of the surface limiting shear stress. It was found that the hydrodynamic effect of the slip wedge is greater than the traditional geometrical convergent-wedge. Even though the geo- metrical gap is a parallel or divergent sliding gap, the slip wedge still gives rise to a very big hydrodynamic pressure. The optimized slip wedge can give rise to a hy- drodynamic load support as high as 2.5 times of what the geometrical conver- gent-wedge can produce. Wall slip usually gives a small surface friction. | MA GuoJun WU ChengWei ZHOU Ping | 2007 | Science China(Physics,Mechanics & Astronomy)2007，50，3： | 3 |
| 7 | Role of surface defects of carbon nanotubes on catalytic performance of barium promoted ruthenium catalyst for ammonia synthesis显示文摘Carbon nanotubes(CNTs) with abundant surface defects are prepared by a liquid oxidation and thermal annealing method. The defective CNTs-D supported Ba–Ru/CNTs-D catalysts exhibit superior catalytic performance in ammonia synthesis with a TOF be increased up to 0.30 s-1, which is 2.5 times of oxidized CNTs-O supported Ba–Ru/CNTs-O catalysts and 5 times of the Ba–Ru/CNTs. The characterizations by CO chemisorption, transmission electron microscope, Raman, and X-ray photoelectron spectroscopy revealed that the uniformly well dispersed Ru NPs can be stabilized on the defective sites of CNTs-D. The great improvement of the catalytic performance and stability of the Ba–Ru/CNTs-D is contributed to the strong interaction between Ru NPs and surface defect of the CNTs. | Yongcheng Ma Guojun Lan Wenzhao Fu Ying Lai Wenfeng Han Haodong Tang Huazhang Liu Ying Li | 2020 | Journal of Energy Chemistry2020，29，2： | 2 |
| 8 | Leachability and fractionation of heavy metals in stainless steelmaking plant dusts显示文摘The leachability and fractionation of the selected heavy metals (Cr, Cd, Pb and Zn) in the stainless steelmaking plant dusts were studied by the modified HJ/T299-2007 method, the modified TCLP test and a seven-step sequential extraction procedure. The results show that the stainless steelmaking plant dusts are considered as hazardous materials since at least one of the leachable heavy metals exceeds the corresponding limit levels of State Environmental Protection Administration of China. Pb is the most extractable heavy metals by the sequential extraction procedure, while Cr, Cd and Zn mainly presents in the residual fraction bound to spinel phase and silicates. The mobile heavy metals in the dusts, which present as the species of water soluble, exchangeable species and the species bounded to carbonates and hydroxides, can be estimated as 0.08-1.2% of Cr, 7.6%-31.8% of Cd, 34.1% of Pb, 0.052-0.4% of Zn, respectively. | Guojun MA Wei FAN Zhengliang XUE Wei WANG Hui TANG | 2010 | Acta Metallurgica Sinica(English Letters)2010，23，4： | 2 |
| 9 | A survey of content-based image retrieval with high-level semantics显示文摘 | Ying Liu Dengsheng Zhang Guojun Lu Wei-Ying Ma | 2006 | Pattern Recognition2006，，1： | 2 |
| 10 | Sta bilisation of Cr(Ⅵ) in stainless steel plant dust through sintering using silica-rich clay显示文摘 | Guojun Ma Andrie Mariana Garbers Craig | 2009 | Journal of Hazardous Materials2009，169，： | 1 |
| 11 | The Developnmnt of Ti-alloyed High Strength Microalloy Steel显示文摘 | Xu Guang Gan Xiaolong Ma Guojun | 2010 | Matcrials and Design2010，31，6： | 1 |
| 12 | The development of Ti-alloyed high strength microalloy steel显示文摘 | Guang Xu Xiaolong Can Guojun Ma | 2010 | Materials and Design2010，31，6： | 1 |
| 13 | Multi-linearity algorithm for wall slip in two dimensional gap flow显示文摘 | MA Guojun WU Chengwei ZHOU Ping | 2007 | International Journal for Numerical Methods in Engin- eering2007，69，12： | 1 |
| 14 | Low friction and high load support capacity of slider bearing with a mixed slip surface显示文摘 | WU Chengwei MA Guojun ZHOU Ping | 2006 | Journal of Tribology2006，128，4： | 1 |
| 15 | Squeeze fluid film of spherical hydrophobic surface with wall slip显示文摘 | WU Chengwei ZHOU Ping MA Guojun | 2006 | TribologyInternational2006，39，： | 1 |
| 16 | The development of Ti-allloyed high strength microalloy steel显示文摘 | Xu Guang Gan Xiaolong Ma GuoJun | 2010 | Materials and Design2010，31，： | 1 |
| 17 | The development of Ti-alloyed high strength microatloy steel显示文摘 | Xu Guang Gan Xiaolong Ma Guojun | 2010 | Materials and Design2010，31，6： | 1 |
| 18 | Effect of Hydrogen on Cryogenic Mechanical Properties of Cr-Ni-Mn-N Austenitic Steels显示文摘The method of high-pressure hydrogen charging was used to investigate the internal hydrogeneffects on cryogenic mechanical properties of two Cr-Ni-Mn-N austenitic steels, 22-13-5 and21-6-9. Specimens saturated with hydrogen up to 65×10-6~68×10-6 were tested in air attemperatures ranging from 77 to 293 K. Hydrogen caused the increase in cryogenic strength,both yield strength and ultimate tensile strength. Hydrogen decreased cryogenic ductility, andthe maximum hydrogen embrittlement (HE) tendency was found at a certain low temperature.Cr-Ni-Mn-N auStenitic Steels showed the featuref δL > ΨL at low temperatures, here, δL and ΨLare the hydrogen induced loss rates of elongation and reduction of area, respectively. Hydrogenhad less effect on cryogenic Charpy impact toughness and notched tensile strength, however,hydrogen decreased cryogenic fracture toughness of the steels. At temperature below Md, thefracture toughness was obviously decreased due to the formation of strain-induced martensites,whether hydrogen was charged or not. | Ma, Luming Liang, Guojun Tan, Jun Rong, Lijian Li, Yiyi
| 1999 | Journal of Materials Science & Technology1999，15，1： | 1 |
| 19 | QUBIC : a qualitative biclustering algorithm for analyses of gene expression data 显示文摘 | LI Guojun MA Qin TANG Haibao | 2009 | Nucleic Acids Research2009，，6： | 1 |
| 20 | Thickness dependence of exchange bias and coercivity in a ferromagnetic layer coupled with an antiferromagnetic layer显示文摘 | Hu Jingguo Jin Guojun Ma Yuqiang | 2003 | J Appl Phys2003，94，： | 1 |
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