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| 1 | Microstructures and fatigue properties of electron beam welds with beam oscillation for heavy section TC4-DT alloy显示文摘With the development of the manufacturing technology, electron beam welding(EBW) is capable of producing titanium alloy large parts in aero fields. To increase the applications and improve the properties, EBW with beam oscillation was investigated on TC4-DT alloy with50 mm thickness. We detected the welding samples by X-ray NDT, observed the microstructures of the welds, and tested the fatigue properties of the joints. The results showed that EBW with beam oscillation improved the weld morphology as well as welding quality, and the microstructure homogeneity of the welds and HAZ along the weld penetration were also improved. The fatigue properties of the joints with beam oscillation were more excellent than those of conventional EBW, even equal to those of the base metal under high stresses. The influences of the processing and the microstructure on the properties with beam oscillation were discussed. | Fu Pengfei Mao Zhiyong Zuo Congjin Wang Yajun Wang Chunming | 2014 | Chinese Journal of Aeronautics2014，27，4： | 8 |
| 2 | Improved Differential Evolution with Shrinking Space Technique for Constrained Optimization显示文摘Most of the current evolutionary algorithms for constrained optimization algorithm are low computational efficiency. In order to improve efficiency, an improved differential evolution with shrinking space technique and adaptive trade-off model, named ATMDE, is proposed to solve constrained optimization problems. The proposed ATMDE algorithm employs an improved differential evolution as the search optimizer to generate new offspring individuals into evolutionary population. For the constraints, the adaptive trade-off model as one of the most important constraint-handling techniques is employed to select better individuals to retain into the next population,which could effectively handle multiple constraints. Then the shrinking space technique is designed to shrink the search region according to feedback information in order to improve computational efficiency without losing accuracy.The improved DE algorithm introduces three different mutant strategies to generate different offspring into evolutionary population. Moreover, a new mutant strategy called ‘‘DE/rand/best/1'' is constructed to generate new individuals according to the feasibility proportion of current population. Finally, the effectiveness of the proposed method is verified by a suite of benchmark functions and practical engineering problems. This research presents a constrained evolutionary algorithm with high efficiency and accuracy for constrained optimization problems. | Chunming FU Yadong XU Chao JIANG Xu HAN Zhiliang HUANG | 2017 | Chinese Journal of Mechanical Engineering2017，30，3： | 7 |
| 3 | Global perspectives and future research directions for the phytoremediation of heavy metal-contaminated soil:A knowledge mapping analysis from 2001 to 2020显示文摘In total,9,552 documents were extracted from the Web of Science Core Collection and subjected to knowledge mapping and visualization analysis for the field of phytoremediation of HM-contaminated soil(PHMCS)with CiteSpace 5.7 R3 software.The results showed that(1)the number of publications increased linearly over the studied period.The top 10 countries/regions,institutions and authors contributing to this field were exhibited.(2)Keyword co-occurrence cluster analysis revealed a total of 8 clusters,including“Bioremediation,”“Arsenic,”“Biochar,”“Oxidative stress,”“Hyperaccumulation,”“EDTA,”“Arbuscular mycorrhizal fungi,”and“Environmental pollution”clusters(3)In total,334 keyword bursts were obtained,and the 25 strongest,longest duration,and newest keyboard bursts were analyzed in depth.The strongest keyword burst test showed that the hottest keywords could be divided into 7 groups,i.e.,“Plant bioremediation materials,”“HM types,”“Chelating amendments,”“Other improved strategies,”“Bioremediation characteristics,”“Risk assessment,”and“Other.”Almost half of the newest topics had emerged in the past 3 years,including“biochar,”“drought,”“health risk assessment,”“electrokinetic remediation,”“nanoparticle,”and“intercropping.”(4)In total,9 knowledge base clusters were obtained in this study.The studies of Ali et al.(2013),Blaylock et al.(1997),Huang et al.(1997),van der Ent et al.(2013),Salt et al.(1995),and Salt(1998),which had both high frequencies and the strongest burst scores,have had the most profound effects on PHMCS research.Finally,future research directions were proposed. | Kehui Liu Xiaojin Guan Chunming Li Keyi Zhao Xiaohua Yang Rongxin Fu Yi Li Fangming Yu | 2022 | Frontiers of Environmental Science & Engineering2022，16，6： | 4 |
| 4 | High-dimensional pseudo-logistic regression and classification with applications to gene expression data 显示文摘 | Chunming Zhang Haoda Fu | 2007 | Computational Statistics & Data Analysis (S0167-9473)2007，52，1： | 1 |
| 5 | TD-SCDMA: Spectrum Modeling, Experimental Verification of Power Amplifier Nonlinearity显示文摘 | LI Xiao LIU Chunming LI Fu | 2013 | Chinese Journal of Electronics2013，22，3： | 1 |
| 6 | The lithium and sodium storage performances of phosphorus and its hierarchical structure显示文摘Recent preparation of black phosphorene and subsequent discovery of its excellent optical and electronic properties have attracted great attenti on,and ren ewed interest to phosphorus.Rece nt researches have indicated that phosphorus structures are promisi ng an odes for lithium-ion and sodium-ion batteries.A high theoretical capacity of 2,596 mAh·g^-1 was predicted for phosphorus according to the reaction of 3Li/Na+P→Li3P/Na3P.However,fast capacity degradation is accompanying with most phosphorus structures due to the low electronic conductivity and structural pulverization induced by large volume change in charging and discharging proceses.The electrochemical performances are significantly affected by the hierarchical structural design of phosphorus.A few reviews of phosphorus structures have been reported recent?However,no review about the electrochemical performances of phosphorus structures according to their hierarchical structures has been reported.First of all,phosphrus allotropes along with their structure and fundamental properties are briefly reviewed in this work.Secondly,the studies on lithiation/sodiation mechanism of red/black phosphorus are presented.Thirdly,a summary about the electrochemical performances of red/black phosphorus composites with different hierarchical structures is presented.Furthermore,the,development challenges and future perspectives of phosphorus structures as anodes for LIBs and SIBs are discussed. | Dan Zhao Lihui Zhang Chengcheng Fu Jinying Zhang Chunming Niu | 2019 | Nano Research2019，12，1： | 1 |
| 7 | Rock-salt and helix structures of silver iodides under ambient conditions显示文摘Many different phase structures have been discovered for silver iodides. The β and γ phases were found to be the most common ones at ambient conditions, while the rock-salt phase was found to be stable under pressures between 400 MPa and 11.3 GPa. Recently, the α phase was demonstrated to be stable under ambient conditions when the particle sizes were reduced to below 10 nm. However, no other phase has been reported to be stable for silver iodides under ambient conditions. Rock-salt and helix structures have been found to be stable under ambient conditions in this study. The structures have been characterized by elemental mapping, Raman scattering, and high-resolution transmission electron microscopy. The stabilities of these structures were also confirmed by molecular dynamics and density functional theory. | Hongyang Huang Jinying Zhang Yifan Zhang Chengcheng Fu Jialiang Huang Yonghong Cheng Chunming Niu Xinluo Zhao Hisanori Shinohara | 2019 | National Science Review2019，6，4： | 1 |
| 8 | Effect of 15?hydroxyprostaglandin dehydrogenase gene on the proliferationof gastric cancer cell murine forestomach carcinoma显示文摘 | Lihua Li Fu Yang Xiaojie Wang Jing Hu Libo Yang Chunming Tang Yunhua Wu Kun Miao Rui Liu Tao Shou | 2014 | Experimental and Therapeutic Medicine2014，，1： | 1 |
| 9 | Application of active disturbance rejection control in tank gun control system显示文摘 | Wang Chunming Xia Yuanqing Fu Mengyin | 2014 | Journal of The Franklin Institute2014，351，4： | 1 |
| 10 | Damage identification of concrete-filled steel tubular arch bridge using data fusion based on information allocation the- ory 显示文摘 | Jiang Shaofei Fu Dabao Hu Chunming | 2011 | Procedia Engineering2011，15，： | 1 |
| 11 | Research on SAR data integrated processing methodology oriented on earth environment factor inversions显示文摘As an important advanced technique in the field of Earth observations,Synthetic Aperture Radar(SAR)plays a key role in the study of global environmental change,resources exploration,disaster mitigation,urban environments,and even lunar exploration.However,studies on imaging,image processing,and Earth factor inversions have often been conducted independently for a long time,which significantly limits the application effectiveness of SAR remote sensing due to the lack of an overall integrated design scheme and integrated information processing.Focusing on this SAR application issue,this paper proposes and describes a new SAR data processing methodology–SAR data integrated processing(DIP)oriented on Earth environment factor inversions.The simple definition,typical integrated modes and overall implementation ideas are introduced.Finally,focusing on building information extraction(man-made targets)and sea ice classification(natural targets)applications,three SAR DIP methods and experiments are conducted.Improved results are obtained under the guidance of the SAR DIP framework.Therefore,the SAR DIP theoretical framework and methodology represent a new SAR science application mode that has the capability to improve the SAR remote sensing quantitative application level and promote the development of new theories and methodologies. | Huadong Guo Jie Chen Xinwu Li Lu Zhang Wenjin Wu Huiying Liu Kai Wang Zhuo Li Xinwei Gu Qingrong Hu Xinmin Wang Jun Li Chunming Han Junjie Zhu Guozhuang Shen Guang Liu Wenxue Fu Zhongchang Sun Xiaoyang Wen | 2017 | International Journal of Digital Earth2017，10，7： | 0 |
| 12 | Analysis of Basal Area for Chinese Fir Plantation Using Two Kinds of Nonlinear Mixed Effects Model(Two Levels)显示文摘Nonlinear mixed effects model(NLMEM) is based on the relationship between the fixed and random effects in the regression function.The NLMEM has a competitive advantage in analyzing repeated measures data,the longitudinal data and multilevel data.This paper chose two kinds of two-level nonlinear mixed model to analyze basal area growth for Chinese Fir(Cunninghamia lanceolata). Model 1 is a general two-level NLMEM and Model 2 is based on Model 1 to further consider the fixed effects parameters changes with a specific factor. Firstly,through the analysis of these two models, this paper defined the basic model to build the two-level NLMEM.Secondly,665 kinds of models derived from Model 1 and 2 703 kinds of models derived from Model 2 were calculated and compared. The results showed that:for Model 1,there were 57 kinds of models converging,and when the formal parameter b0 considered the block effects and plot effects,b1 and b4 only considered the block effects, the model fitted the best;and for Model 2,there were 24 kinds of model converging,and when the formal parameter bs considered the block effects and plot effects,b1 only considered block effects and the fixed effects b0 changed with any level of block level, Model 2 fitted the best.Finally,by comparing the traditional nonlinear regression model,Model 1 and Model 2,the results showed that Model 1 and Model 2 fitted better than the traditional nonlinear regression, and Model 2 was best fitting model. | Fu Liyong Li Yongci Li Chunming Tang Shouzheng | 2012 | Chinese Forestry Science and Technology2012，11，3： | 0 |
| 13 | Study of Dominant Height for Chinese Fir Plantation Using Two-Level Nonlinear Mixed Effects Model显示文摘Nonlinear mixed effects model(NLMEM) is built on the relationship of the fixed and random effects in the regression function.The NLMEM has an obvious comparative advantage in analyzing the longitudinal data,repeated measures data and multilevel data.Two-level NLMEM is used to analyze the dominant height for Chinese fir (Cunninghamia lanceolata).The authors outline the two-level NLMEM and introduce the parameters estimation method of the model.Based on five common Richard and Logistic models,the mixed model is built.The modeling data are used to calculate and compare with 19 models derived from each based model,and 5 optimal mixed models are built.Compared the 5 optimal mixed models with traditional regression models,it is showed that the two-level NLMEM has a better fitting effect than the regression model. | Fu Liyong Li Yongci Li Chunming Tang Shouzheng | 2012 | Chinese Forestry Science and Technology2012，11，3： | 0 |
| 14 | Ultrafine MoO_(x)clusters anchored on g-C_(3)N_(4)with nitrogen/oxygen dual defects for synergistic efficient O_(2)activation and tetracycline photodegradation显示文摘Photocatalytic O_(2)activation to generate reactive oxygen species is crucially important for purifying organic pollutants,yet remains a challenge due to poor adsorption of O_(2)and low efficiency of electron transfer.Herein,we demonstrate that ultrafine MoO_(x)clusters anchored on graphitic carbon nitride(g-C_(3)N_(4))with dual nitrogen/oxygen defects promote the photocatalytic activation of O_(2)to generate·O_(2)−for the degradation of tetracycline hydrochloride(TCH).A range of characterization techniques and density functional theory(DFT)calculations reveal that the introduction of the nitrogen/oxygen dual defects and MoO_(x)clusters enhances the O_(2)adsorption energy from−2.77 to−2.94 eV.We find that MoO_(x)clusters with oxygen vacancies(Ov)and surface Ov-mediated Moδ+(3≥δ≥2)possess unpaired localized electrons,which act as electron capture centers to transfer electrons to the MoO_(x)clusters.These electrons can then transfer to the surface adsorbed O_(2),thus promoting the photocatalytic conversion of O_(2)to·O_(2)−and,simultaneously,realizing the efficient separation of photogenerated electron–hole pairs.Our fully-optimized MoO_(x)/g-C_(3)N_(4)catalyst with dual nitrogen/oxygen defects manifests outstanding photoactivities,achieving 79%degradation efficiency toward TCH within 120 min under visible light irradiation,representing nearly 7 times higher activity than pristine g-C_(3)N_(4).Finally,based on the results of liquid chromatograph mass spectrometry and DFT calculations,the possible photocatalytic degradation pathways of TCH were proposed. | Huidong Shen Xinyu Zhan Song Hong Liang Xu Chunming Yang Alex W.Robertson Leiduan Hao Feng Fu Zhenyu Sun | 2023 | Nano Research2023，16，8： | 0 |
| 15 | Cellular rejuvenation:molecular mechanisms and potential therapeutic interventions for diseases显示文摘The ageing process is a systemic decline from cellular dysfunction to organ degeneration,with more predisposition to deteriorated disorders.Rejuvenation refers to giving aged cells or organisms more youthful characteristics through various techniques,such as cellular reprogramming and epigenetic regulation.The great leaps in cellular rejuvenation prove that ageing is not a one-way street,and many rejuvenative interventions have emerged to delay and even reverse the ageing process.Defining the mechanism by which roadblocks and signaling inputs influence complex ageing programs is essential for understanding and developing rejuvenative strategies.Here,we discuss the intrinsic and extrinsic factors that counteract cell rejuvenation,and the targeted cells and core mechanisms involved in this process.Then,we critically summarize the latest advances in state-of-art strategies of cellular rejuvenation.Various rejuvenation methods also provide insights for treating specific ageing-related diseases,including cellular reprogramming,the removal of senescence cells(SCs)and suppression of senescence-associated secretory phenotype(SASP),metabolic manipulation,stem cells-associated therapy,dietary restriction,immune rejuvenation and heterochronic transplantation,etc.The potential applications of rejuvenation therapy also extend to cancer treatment.Finally,we analyze in detail the therapeutic opportunities and challenges of rejuvenation technology.Deciphering rejuvenation interventions will provide further insights into anti-ageing and ageing-related disease treatment in clinical settings. | Shuaifei Ji Mingchen Xiong Huating Chen Yiqiong Liu Laixian Zhou Yiyue Hong Mengyang Wang Chunming Wang Xiaobing Fu Xiaoyan Sun | 2023 | Signal Transduction and Targeted Therapy2023，8，4： | 0 |
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