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| 1 | Analysis and Suppression of Beat Phenomenon for Railway Traction Converters and Motors显示文摘交直交传动系统广泛应用于高速铁路牵引领域。由于单相脉冲整流器的工作特性,其输出直流电压含有频率为2倍电网频率的脉动分量。该分量在牵引电机侧会引起拍频现象,尤其当牵引逆变器工作频率接近2倍电网频率时最为严重。首先详细分析了直流电压脉动分量的来源和拍频现象产生的本质。然后,在取消LC谐振电路并考虑直流侧脉动电压幅值和相角变化的情况下,研究了一种基于频率补偿的无拍频控制算法,并应用于间接转子磁场定向矢量控制系统。通过在转速环注入脉动分量,补偿牵引逆变器工作频率,抑制牵引电机拍频电流。最后,仿真结果和硬件在回路实验结果验证了该算法的有效性。 | GOU Bin FENG Xiaoyun SONG Wensheng HAN Kun, GE Xinglai | 2013 | 中国电机工程学报2013，33，9： | 5 |
| 2 | The lifestyle transition of Arthrobotrys oligospora is mediated by microRNA-like RNAs显示文摘The lifestyle transition of fungi,defined as switching from taking organic material as nutrients to pathogens,is a fundamental phenomenon in nature.However,the mechanisms of such transition remain largely unknown.Here we show microRNA-like RNAs(milRNAs)play a key role in fungal lifestyle transition for the first time.We identified milRNAs by small RNA sequencing in Arthrobotrys oligospora,a known nematode-trapping fungus.Among them,7 highly expressed milRNAs were confirmed by northern-blot analysis.Knocking out two milRNAs significantly decreased A.oligospora’s ability to switch lifestyles.We further identified that two of these milRNAs were associated with argonaute protein QDE-2 by RNA-immunoprecipitation(RIP)analysis.Three of the predicted target genes of milRNAs were found in immunoprecipitation(IP)products of QDE-2.Disruption of argonaute gene qde-2 also led to serious defects in lifestyle transition.Interestingly,knocking out individual milRNAs or qde-2 lead to diverse responses under different conditions,and qde-2 itself may be targeted by the milRNAs.Collectively,it indicates the lifestyle transition of fungi is mediated by milRNAs through RNA interference(RNAi)machinery,revealing the wide existence of miRNAs in fungi kingdom and providing new insights into understanding the adaptation of fungi from scavengers to predators and the mechanisms underlying fungal infections. | Xinglai Ji Heng Li Weihua Zhang Jiai Wang Lianming Liang Chenggang Zou Zefen Yu Shuqun Liu Ke-Qin Zhang | 2020 | Science China(Life Sciences)2020，63，4： | 4 |
| 3 | Structural stability and magnetism of metastable Ni-Pt intermetallic compounds studied by ab initio calculation显示文摘The self-consistent electronic structure calculations were carried out with the accurate frozen-core full-potential projector augmented-wave method on 13 Ni-Pt intermetallic compounds of simple crystalline structures,i.e. A15,D019,D03 and L12 Ni3Pt and NiPt3,and α-NiAs,B1,B2,L2a,and L10 NiPt. The calculations reveal that the L12 Ni3Pt,L10 NiPt and L12 NiPt3 are energetically more stable than their respective competitive structures,indicating that the three structures may be formed in some appropriate conditions. The obtained results match well with the experimental observation or other theory predictions. It is found that there is hybridization between Ni 3d and Pt 5d states,which may significantly affect the structural stability and magnetism of metastable Ni-Pt intermetallic compounds. | CHE XingLai LI JiaHao DAI Ye LIU BaiXin | 2009 | Science China(Technological Sciences)2009，52，9： | 2 |
| 4 | In-situ synthesis of TiO_2 nanostructures on Ti foil for enhanced and stable photocatalytic performance显示文摘TiO_2 nanostructures with strong interfacial adhesion and diverse morphologies have been in-situ grown on Ti foil substrate through a multiple-step method based on conventional plasma electrolytic oxidation(PEO) technology, hydrothermal reaction and ion exchange process. The PEO process is critical to the formation of TiO_2 seeding layer for the nucleation of Na_2Ti_3O_7 and H_2Ti_3O_7 mediates that are strongly attached to the Ti foil. An ion exchange reaction can finally lead to the formation of H_2Ti_3O_7 nanostructures with diverse morphologies and the calcination process can turn the H_2Ti_3O_7 nanostructures into TiO_2 nanostructures with enhanced crystallinity. The morphology of the TiO_2 nanostructures including nanoparticles(NP), nanowhiskers(NWK), nanowires(NW) and nanosheets(NS) can be easily tailored by controlling the NaOH concentration and reaction time during hydrothermal process. The morphology, composition and optical properties of TiO_2 photocatalysts were analyzed using scanning electron microscope(SEM), X-ray diffraction(XRD), photoluminescence(PL) spectroscopy and UV–vis absorption spectrum. Photocatalytic tests indicate that the TiO_2 nanosheets calcined at 500?C show good crystallization and the best capability of decomposing organic pollutants. The decoration of Ag cocatalyst can further improve the photocatalytic performance of the TiO_2 nanosheets as a result of the enhanced charger separation efficiency. Cyclic photocatalytic test using TiO_2 nanostructures grown on Ti foil substrate demonstrates the superior stability in the photodegradation of organic pollutant, suggesting the promising potential of in-situ growth technology for industrial application. | Ke Wang Baodan Liu Jing Li Xiaoyuan Liu Yang Zhou Xinglai Zhang Xiaoguo Bi Xin Jiang | 2019 | Journal of Materials Science & Technology2019，35，4： | 2 |
| 5 | Bioinformatical study on the proteomics and evolution of SARS-CoV显示文摘A novel coronavirus has been identified as the causative agent of the severe acute respiratory syndrome(SARS). For all the SARS-CoV associated proteins derivatedfrom the SARS-CoV genome, the physiochemical propertiessuch as the molecular weight, isoelectric point and extinction coefficient of each protein were calculated. Thetransmembrane segments and subcellular localization(SubLocation) prediction and conserved protein motifssearch against database were employed to analyze thefunction of SARS-CoV proteins. Also, the homology protein sequence alignment and evolutionary distance matrixcalculation between SARS-CoV associated proteins and the corresponding proteins of other coronaviruses wereemployed to identify the classification and phylogeneticrelationship between SARS-CoV and other coronaviruses.The results showed that SARS-CoV is a novel coronavirus which is different from any of the three previously knowngroups of coronviruses, but it is closer to BoCoV and MHV than to other coronaviruses. This study is in aid ofexperimental determination of SARS-CoV proteomics andthe development of antiviral vaccine. | LIU Shuqun*, GUO Tao*, JI Xinglai & SUN Zhirong Institute of Bioinformatics, Department of Biological Sciences andBiotechnology, Tsinghua University, Beijing 100084, China * The two authors contributed equally to this work. Correspondence should be addressed to Sun Zhirong (e-mail: sunzhr @mail.tsinghua.edu.cn) | 2003 | Chinese Science Bulletin2003，48，13： | 1 |
| 6 | Mining gene expression data using a novel approach based on hidden Markov models显示文摘 | Ji Xinglai Li Ling Sun Zhirong | 2008 | Evolutionary Computation Journal2008，56，1： | 1 |
| 7 | A new method of research on molecular evolution of proteinase superfamily显示文摘The molecular evolutionary tree, also known as a phylogenetic tree, of the serine proteinase superfamily was constructed by means of structural alignment. Three-dimensional structures of proteins were aligned by the SSAP program of Orengo and Taylor to obtain evolutionary distances. The resulting evolutionary tree provides a topology graph that can reflect the evolution of structure and function of homology proteinase. Moreover, study on evolution of the serine proteinase superfamily can lead to better understanding of the relationship and evolutionary difference among proteins of the superfamily, and is of significance to protein engineering, molecular design and protein structure prediction. Structure alignment is one of the useful methods of research on molecular evolution of protein. | SUN Zhirong JI Xinglai HU Shengmin WANG Yu HE Fuchu | 2001 | Chinese Science Bulletin2001，46，7： | 1 |
| 8 | Digital gene expression profiling analysis of DNA repair pathways in colon cancer stem population of HT29 cells显示文摘癌症干细胞(CSC ) 贡献新瘤损害的恶化和发展。当很可得到的临床的途径例如化学药品和放射治疗,将杀死癌症房间的多数时,他们都不杀死他们。一些抵抗房间象 CSC 一样,能由于他们的优秀自我维持的能力幸存,甚至在挑战性的环境。在现在的学习,我们响应单个海滨的损坏和双海滨从 HT29 房间线调查了冒号 CSC 的 DNA 修理基因的 mRNA 水平裂缝,以及在基础切除的关键基因的明显的 upregulation 修理,失配修理,非相应加入结束,并且在这些房间的相应再结合小径。数字基因表示分析在可以在 DNA 修理起重要作用的 CD44 + HT29 房间识别了 upregulated 基因。我们的结果表明冒号 CSC 忍受有效 DNA 修理能力,它可能在重复化学药品和放射治疗以后解释冒号 CSC 的幸存。 | Wenxue Wang Guoxiu Zhang Jing Yang Huan Gu Lei Ding Haijing Yu Min Yu Qinghua Cui Xinglai Ji Meizhang Li | 2017 | Acta Biochimica et Biophysica Sinica2017，49，1： | 1 |
| 9 | Size Effects On Impact Response Of Composite Laminates 显示文摘 | Dahsin Liu B B Raju Xinglai Dang | 1998 | International journal of impact engineering1998，21，10： | 1 |
| 10 | Highly efficient visible-light photocatalytic degradation and antibacterial activity by GaN:ZnO solid solution nanoparticles显示文摘The development of high-efficiency photocatalysts is the primary goal in the field of photocatalytic antibacterial research.In this work,the Ga N:Zn O solid solution nanoparticles(NPs)photocatalyst with strong visible absorption and large specific surface area was synthesized via the sol-gel and nitridation reaction process.Also,we systematically investigated the removal efficiency of the organic pollutant and antibacterial activity on E.coli and S.aureus.Notably,methylene blue solution could be completely degraded after 100 min of visible light illumination using 2 mg/m L Ga N:Zn O catalyst.Moreover,~94%of the E.coli were inactivated within 120 min,whereas 100%antibacterial activity against S.aureus was achieved after 90 min of visible light illumination mediated by Ga N:Zn O NPs.We further explore the potential mechanism of visible light photocatalytic antibacterial activity enhanced by Ga N:Zn O NPs photocatalyst.The current work not only provides a new and efficient photocatalytic antibacterial nanomaterial but also demonstrates its promising applications in environmental and biological fields. | Bing Leng Xinglai Zhang Shanshan Chen Jing Li Ziqing Sun Zongyi Ma Wenjin Yang Bingchun Zhang Ke Yang Shu Guo | 2021 | Journal of Materials Science & Technology2021，，35： | 1 |
| 11 | Low-temperature and stable CO oxidation of Co_(3)O_(4)/TiO_(2) monolithic catalysts显示文摘Highly efficient Co_(3)O_(4)/TiO_(2) monolithic catalysts with enhanced stability were in-situ grown on Ti mesh for CO oxidation,which could completely oxidize CO at 120℃.The comprehensive catalytic performance is competitive to some noble metal catalysts and conventional Co_(3)O_(4) powder catalysts,which holds great potential toward industrial applications.Meanwhile,the in-situ synthesis strategy of Co_(3)O_(4)/TiO_(2) monolithic catalysts on flexible mesh substrate in this work can be extended to the development of a variety of oxide-based monolithic catalysts towards diverse catalysis applications. | Xinyue Tang Junchao Wang Yonghui Ma Jing Li Xinglai Zhang Baodan Liu | 2021 | Chinese Chemical Letters2021，32，1： | 1 |
| 12 | Analytic calculation of formation enthalpies directly from interatomic potentials for binary and ternary refractory metal systems显示文摘An analytic method is proposed to calculate the formation enthalpy directly from empirical n-body potential and applied to the binary and ternary systems consisting of the refractory metals Mo, Nb, Ta and W. It turns out that the calculated enthalpies are in overall agreement with experimental observations and some other theoretical calculations. Interestingly, it shows that the formation enthalpies of the ternary systems are significantly affected by those of the constituent binary systems. | DAI Ye, LI JiaHao, CHE XingLai & LIU BaiXin Advanced Materials Laboratory, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. | 2010 | Science China(Technological Sciences)2010，53，7： | 1 |
| 13 | Impact perforation resistance of laminated and assembled composite plates 显示文摘 | Liu Dahsin Raju B B Dang Xinglai | 2000 | International Journal of Impact Engineering2000，24，73： | 1 |
| 14 | Impact perforation resistance of laminated and assembled composite plates显示文摘 | Liu Dahsin Raju B B Dang Xinglai | 2000 | International Journal of Impact Engineering2000，24，： | 1 |
| 15 | Proteomic analysis of wheat ( Triticum aestivum L.) hybrid necrosis显示文摘 | Qiyan Jiang Hui Chen Xinglai Pan Qianying Pan Yinhong Shi Xiurong Li Guiyun Zhang Yongjie Wang Sangang Xie Shihua Shen | 2008 | Plant Science2008，，3： | 1 |
| 16 | Tunable and enhanced luminescence of Ba_(2-x)Ca_xSiO_(4-y)N_(2/3y):Eu^(2+) phosphors for white light-emitting diodes显示文摘Color tuning and luminescence enhancement are predominant challenges for improving the performance of white light emitting diodes(LEDs) toward commercial application. In this paper, a novel promising Ba_(2-x)Ca_xSiO_(4-y)N_(2/3y):Eu^(2+) tphosphors with tunable and enhanced luminescence for phosphors converted LEDs(pc-LEDs) have been successfully synthesized by a direct gas-reduction nitridation method. The effects of Ca and N doping on the phase purity, morphology and optical properties of Ba_(2-x)Ca_xSiO_(4-y)N_(2/3y):Eu^(2+) tphosphors were also systematically investigated. The optical results show that Ba_(2-x)Ca_xSiO_(4-y)N_(2/3y):Eu^(2+) tphosphors can be actively excited over a broad range from 250 to430 nm. With the adding of different concentrations of Ca^(2+) tions in phosphors, the emission color wavelength can be tailored from 501 to 441 nm by a 375 nm NUV LED excitation source. Furthermore, it has been found that the emission and absorption of Ba_(2-x)Ca_xSiO_(4-y)N_(2/3y) tphosphor can be significantly improved when N^(3-) ions were introduced into the host lattices. The intensity of Ba_(1.5)Ca_(0.5)SiO_(4-y)N_(2/3y):Eu^(2+) tphosphor was 3.4 times higher than the phosphor without N doping. The fabrication and characterization of pc-LEDs using Ba_(2-x)Ca_xSiO_(4-y)N_(2/3y):Eu^(2+) tphosphors-silica gel as the coating layer onto 375 nm-emitting In Ga N LED caps demonstrated the superior optical and current tolerant properties,making it a promising and competitive candidate for commercial utilization in white LED applications. | Xinglai Zhang Baodan Liu Wenjin Yang Xin Jiang | 2016 | Progress in Natural Science:Materials International2016，26，3： | 0 |
| 17 | 贝叶斯概率递减曲线分析量化页岩气储量不确定性显示文摘近年来,人们针对页岩气井产量预测建立了多种解析递减曲线模型(Anderson等,2010;11k等2008;Valko和Lee2010)。页岩气产量预测存在相当大的不确定性,但这些作者要么没有量化页岩气井储量的不确定性,要么无法证实其概率预测结果得到了很好的标定。Jochen和Spivev(1996)和Cheng等(2010)开发出了可以开展概率递减预测和量化储量不确定性的自助法(bootstrap method)。采用改进型自助法(Cheng等,2010)开展预测能够很好地反映真实的储量。但由于需要为每口井都开展数百次的牛顿迭代(Newton Iteration),其时间效率比较低。在本次研究中,我们针对概率递减曲线分析引入了贝叶斯法,用于快速可靠地量化储量不确定性,而且无需修改历史产量数据。我们通过分析巴奈特页岩区带中生产历史在7年以上的167口水平井,验证了这种方法的有效性。在贝叶斯方法中,递减曲线参数qi、D.和b被假定为随机变量,而非为获得最佳拟合效果而需进行修改的参数。采用带Metropolis算法的McMc建立了递减曲线参数的马尔科夫链。在对167口巴奈特水平页岩气井开展测试时,我们假设前半时段的产量数据已知,而下半时段的产量数据未知,后者被视为“未来产量”。这167口井的“未来产量”数据大约有85%落在由贝叶斯法计算的P90和P10储量范围内,说明这种方法得到了很好的标定,而且贝叶斯法的计算速度是改进型自助法的13倍。所提出的贝叶斯法为人们快速而可靠地得出概率递减曲线预测结果和量化储量不确定性提供了一种手段。如有必要,这个方法还可以与其它解析递减曲线模型结合使用。 | Xinglai Gong | 2015 | 石油地质科技动态2015，0，5： | 0 |
| 18 | High-performance and broadband photodetection of bicrystalline(GaN)_(1-x)(ZnO)_(x)solid solution nanowires via crystal defect engineering显示文摘Crystal defect engineering is widely used as an effective approach to regulate the optical and optoelectronic properties of semiconductor nanostructures.However,photogenerated electron-hole pair recombination centers caused by structural defects usually lead to the reduction of optoelectronic performance.In this work,a high-performance photodetector based on(GaN)_(1-x)(ZnO)_(x)solid solution nanowire with bicrystal structure is fabricated and it shows excellent photoresponse to ultraviolet and visible light.The highest responsivity of the photodetector is as high as 60,86 and 43 A/W under the irradiation of365 nm,532 nm and 650 nm,respectively.The corresponding response time is as fast as 170,320 and 160 ms.Such wide spectral responses can be attributed to various intermediate energy levels induced by the introduction of various structural defects and dopants in the solid solution nanowire.Moreover,the peculiar bicrystal boundary along the axial direction of the nanowire provides two parallel and fast transmission channels for photo-generated carriers,reducing the recombination of photo-generated carriers.Our findings provide a valued example using crystal defect engineering to broaden the photoresponse range and improve the photodetector performance and thus can be extended to other material systems for various optoelectronic applications. | Zongyi Ma Gang Li Xinglai Zhang Jing Li Cai Zhang Yonghui Ma Jian Zhang Bing Leng Natalia Usoltseva Vladimir An Baodan Liu | 2021 | Journal of Materials Science & Technology2021，，26： | 0 |
| 19 | Review of fiber superluminescent pulse amplifications显示文摘High coherence of the laser is indispensable light sources in modern long or short-distance imaging systems, because the high coherence leads to coherent artifacts such as speckle that corrupt image formation. To deliver low coherence pulses in fiber amplifiers, we utilize the superluminescent pulsed light with broad bandwidth, nonlongitudinal mode structure and chaotic mode phase as the seed source of the cascaded fiber amplifiers. The influence of fiber superluminescent pulse amplification(SPA) on the limitations of the performance is analyzed. A review of our research results for SPA in the fibers are present, including the nonlinear theories of this low coherent light sources, i.e., self-focusing(SF), stimulated Raman scattering(SRS) and self-phase modulation(SPM) effects, and the experiment results of the nanosecond pulses with peak power as high as 4.8 MW and pulse energy as much as 55 mJ. To improve the brightness of SPA light in the future work, we introduce our novel evaluation term and a more reasonable criterion, which is denoted by a new parameter of brightness factor for active large mode area fiber designs. A core-doped active large pitch fiber with a core diameter of 190 μm and a mode-field diameter of 180 μm is designed by this method. The designed fiber allows near diffracted limited beam quality operation, and it can achieve 100 mJ pulse energy and 540 W average power by analyzing the mode coupling effects induced by heat. | Haitao Zhang Xinglai Shen He Hao Qinghua Li Mali Gong | 2016 | High Power Laser Science and Engineering2016，4，3： | 0 |
| 20 | In-situ growth of large-area monolithic Fe_(2)O_(3)/TiO_(2) catalysts on flexible Ti mesh for CO oxidation显示文摘In this study, we reported the in-situ fabrication of a series of Fe_(2)O_(3)/TiO_(2) monolithic catalysts on flexible Ti mesh via plasma electrolytic oxidation process, hydrothermal reaction and chemical bath deposition(CBD) method. The morphology tailoring of Fe_(2)O_(3) nanostructures finds that Fe2O3 nanosheets supported on TiO2 exhibit superior catalytic performance with a complete oxidation of CO at 260℃. The catalytic stability test indicates that the in-situ grown Fe_(2)O_(3)/TiO_(2) catalysts own outstanding performance for continuous CO oxidation due to the strong substrate adhesion without mass loss. The microstructures and interfaces of Fe_(2)O_(3)/TiO_(2) catalysts are well studied using series of characterization techniques. The in-situ preparation strategy of metal oxide catalysts in this work will open up more opportunities for the rational design of variety of monolithic catalysts used for CO oxidation, de-NO_(x), three-way catalysis and other related application in industry. | Xinyue Tang Junchao Wang Jing Li Xinglai Zhang Peiqing La Xin jiang Baodan Liu | 2021 | Journal of Materials Science & Technology2021，，10： | 0 |
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