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| 1 | The next generation models for crops and agro-ecosystems显示文摘Growth in population, decrease in arable land area, and change in climate are endangering our food security. Precision agriculture has the potential to increase crop productivity thorough tailored agricultural practices for different growing areas. Many models of crops and agro-ecosystems capable of predicting interaction between plants and environments have been developed for precision agriculture. Currently, there are several representative categories of crop and agro-ecosystem models, including the de Wit school models, the DSSAT series models and the APSIM series models, which have contributed substantially to improvement of agricultural practices. However, these models are weak in predicting performances of crops under environmental and genetic perturbations are generally weak, which severely limits the application of these models in guiding precision agriculture. We need to develop the next generation crop and agro-ecosystems models with a high level of mechanistic basis, which can be integrated with high throughput data and can predict the heterogeneity of environmental factors inside canopy and dynamic canopy photosynthesis. In developing such a model close collaboration is inevitably required among scientists from different disciplines. The successful development and application of such models will undoubtedly advance precision agriculture through providing better agronomical practices tailored for different growing environments. These models will also form a basis to identify breeding targets for increased productivity at given location with given soil and climatic conditions. | ZHU XinGuang ZHANG GuiLian THOLEN Danny WANG Yu XIN ChangPeng SONG QingFeng | 2011 | Science China(Information Sciences)2011，54，3： | 6 |
| 2 | Current Trends and Perspectives of Detection and Location for Buried Non-Metallic Pipelines显示文摘Buried pipelines are an essential component of the urban infrastructure of modern cities.Traditional buried pipes are mainly made of metal materials.With the development of material science and technology in recent years,non-metallic pipes,such as plastic pipes,ceramic pipes,and concrete pipes,are increasingly taking the place of pipes made from metal in various pipeline networks such as water supply,drainage,heat,industry,oil,and gas.The location technologies for the location of the buried metal pipeline have become mature,but detection and location technologies for the non-metallic pipelines are still developing.In this paper,current trends and future perspectives of detection and location of buried non-metallic pipelines are summarized.Initially,this paper reviews and analyzes electromagnetic induction technologies,electromagnetic wave technologies,and other physics-based technologies.It then focuses on acoustic detection and location technologies,and finally introduces emerging technologies.Then the technical characteristics of each detection and location method have been compared,with their strengths and weaknesses identified.The current trends and future perspectives of each buried non-metallic pipeline detection and location technology have also been defined.Finally,some suggestions for the future development of buried non-metallic pipeline detection and location technologies are provided. | Liang Ge Changpeng Zhang Guiyun Tian Xiaoting Xiao Junaid Ahmed Guohui Wei Ze Hu Ju Xiang Mark Robinson | 2021 | Chinese Journal of Mechanical Engineering2021，34，5： | 2 |
| 3 | Study on longitudinal wind load calculation method of cables for cable-stayed bridge显示文摘Along with the expanding of span of cable-stayed bridge,wind load becomes a more and more important controlling factor for bridge the design.A very large proportion of the wind load acting on cables has exceeded that acting on deck.There was not any detailed prescript in Chinese code for calculation of longitudinal wind load on cables due to lack of theoretical research and experiment,and conservative simplified calculation was adopted during design,which leads to conservative and uneconomical design of structures.To resolve this problem,cable force experiment was carried out during the design of Sutong Bridge.By comparing with international research results,the calculation formula of longitudinal wind drag coefficient for cables was advanced to fill the blank of bridge wind resistant code of China,and has already been adopted in the Highway Bridge Wind Resistant Design Code(JTG/T D60-01-2004)with great significance for bridge engineering. | Pei Minshan Zhang Xigang Zhu Bin Hou Bin Liu Changpeng | 2009 | Engineering Sciences2009，7，1： | 2 |
| 4 | Photoelectrochemical biofuel cell using porphyrin-sensitized nanocrystalline titanium dioxide mesoporous film as photoanode显示文摘 | Kunqi Wang Jing Yang Ligang Feng Yuwei Zhang Liang Liang Wei Xing Changpeng Liu | 2011 | Biosensors and Bioelectronics2011，，1： | 1 |
| 5 | Real contribution of formic acid in direct formic acid fuel cell: Investigation of origin and guiding for micro structure design显示文摘 | Weiwei Cai Liang Liang Yuwei Zhang Wei Xing Changpeng Liu | 2013 | International Journal of Hydrogen Energy2013，，1： | 1 |
| 6 | Polymer-chelation approach to high-performance Fe-Nx-C catalyst towards oxygen reduction reaction显示文摘Pyrolyzed Fe-Nx-C with atomically dispersed Fe-Nxsites are hailed as the most promising alternative to the noble metal Pt-based catalysts towards oxygen reduction reaction(ORR). However, the conventional micropore-confinement synthetic approach usually causes the insufficient utilization of active sites and mass transport resistance as the sites are located inside the micropore. We herein report a polymerchelation strategy to directly disperse the Fe-Nxactive sites onto the carbon surface. The N-rich monomer was in-situ polymerized on the carbon support and then chelated with Fe. The strong Fe-N chelating interaction is crucial to suppress Fe aggregation when undergoing the high-temperature pyrolysis. Due to the enriched surface sites, hierarchically porous structure and excellent conductivity of carbon support,the optimal catalyst(denoted as Fe-Nx-C@C-900) exhibits impressive ORR activity of onset and half-wave potential of 1.02 and 0.87 V, respectively, superior to the Pt/C benchmark. | Xue Wang Li Zhang Meiling Xiao Junjie Ge Wei Xing Changpeng Liu Jianbing Zhu | 2023 | Chinese Chemical Letters2023，34，4： | 1 |
| 7 | Residues of cyantraniliprole and its metabolite J9Z38 in rice field ecosystem显示文摘 | ZHANG Changpeng HU Xiuqing ZHAO Hua | 2013 | Chemosphere2013，93，1： | 1 |
| 8 | Determination of difenoconazole residue in tomato during home canning by UPLC-MS/MS显示文摘 | Zhiqiang Kong Fengshou Dong Jun Xu Xingang Liu Changpeng Zhang Jing Li Yuanbo Li Xiu Chen Weili Shan Yongquan Zheng | 2011 | Food Control2011，，2： | 1 |
| 9 | Vector deflection stability control of aero-engine based on linear active disturbance rejection显示文摘Aimed at the problem of instability in engine control caused by vector deflection in experiment of turbofan engines with Axisymmetric Vectoring Exhaust Nozzle(AVEN),a vector deflection stability control method of aero-engine based on Linear Active Disturbance Rejection Control(LADRC)is proposed.Firstly,based on CFD numerical simulation,aerodynamic performance model of AVEN is established,and the aerodynamic load change rule of the nozzle throat area actuator during vector deflection is revealed.Subsequently,the integrated model of AVEN/-turbofan engine is established by Simulink/AMESim co-simulation.Finally,the nozzle throat area control loop based on LADRC is designed.The simulation results show that the integrated model can reflect the influence of vector deflection on the stability of the control system.The accuracy comparison between the fan rotor speed and the test data during vector deflection is larger than 1%,indicating a high degree of confidence.Compared with the conventional PID control,the designed LADRC control loop reduces the speed of the low-pressure rotor during vector deflection by 70%,which effectively improves the control stability of the vector deflection.Meanwhile,the fuel flow ratechange during the vector deflection process is smaller and more economical,which provides an important reference for engineering applications. | Changpeng CAI Yerong PENG Qiangang ZHENG Haibo ZHANG | 2022 | Chinese Journal of Aeronautics2022，35，8： | 0 |
| 10 | Intensive Observation of Reservoirinduced Seismicity and Preliminary Analysis on the Causes of Earthquakes in the Three Gorges Reservoir Area,Yangtze River显示文摘根据第 11 五年的计划的国家关键技术 RD 节目的要求,由 26 个地震车站组成的一个使增加密度的地震网络在 2009 年 3 月 21 短时期的地震计在湖北省的节在三个峡水库区域被建立, 5 宽带数字地震计。从三月到 2009 年 12 月, 2,995 ML -0 的一个总数。8 - 2。9 地震在从 145 m 三朵峡水库水水平玫瑰扣押到 172.8m 的试用期间被检测。用双差别地震地点算法, 2,837 地震精确被重定位。小本地地震的模式聚集在三个峡水库区域的结果表演呈现了线性分布或像团的簇分发,事件的像团的簇通常在从水滨的 5 km 的距离以内,并且地震的线性分发能被扩大到 16 km 的距离离开水滨。在三座峡水库的湖北节,地震主要在 Xiangxihe 河附近在 Xiannvshan 和 Jiuwanxi 差错的北结束被集中,并且沿着在在 Badong 区域的北河岸上的 Xietan 镇区和 Shenlongxi 区域的西方的长江的河岸,与焦点的深度不到 10km ,和 4km 在平均。在水库区域的地震频率与水库水水平变化有积极关联,显示 seismicity 属于水库导致的地震。沿着在水库区域的 Shenlong 河,地震在北 Badong 县显示出三线性分布,并且根据石灰岩地区常见的地形散布了分发。在碳酸盐阶层有地下的河。当水库被扣押时,水渗入了进地下的河,因此导致地震。在 Xiannvshan 的 crossriver 片断上的区域的地震指责, Jiuwanxi 差错并且在 Xietan , Shazhen 和 Xizhen 的区域西方,可能与弄软断绝有关 Xiannvshan 差错,或床上用品例如 Nukou 差错,连接,它将导致岩石群众的失败因此,导致地震。然而,关于被触发的机制的有说服力的结论仍然需要进一步的学习。另外, Zigui 县并且在 Badong 县的 Rangkou 镇东方的 Wenhua 和 Yanglin 向南接近区域, mininginduced 地震在水库的岸是的附近,并且上的矿发生了一些倒塌地震。 | Ma Wentao Xu Changpeng Yuan Jingli Li Hai'ou Xu Xiwei Zhang Xindong Zhang Lanfeng | 2011 | Earthquake Research in China2011，25，3： | 0 |
| 11 | Atomically dispersed Fe sites on hierarchically porous carbon nanoplates for oxygen reduction reaction显示文摘Developing cost-effective,robust and stable non-precious metal catalysts for oxygen reduction reaction(ORR) is of paramount importance for electrochemical energy conversion devices such as fuel cells and metal-air batteries.Although Fe-N-C single atom catalysts(SACs) have been hailed as the most promising candidate due to the optimal binding strength of ORR intermediates on the Fe-N_(4) sites,they suffer from serious mass transport limitations as microporous templates/substrates,i.e.,zeolitic imidazolate frameworks(ZIFs),are usually employed to host the active sites.Motivated by this challenge,we herein develop a hydrogen-bonded organic framework(HOF)-assisted pyrolysis strategy to construct hierarchical micro/mesoporous carbon nanoplates for the deposition of atomically dispersed Fe-N_(4) sites.Such a design is accomplished by employing HOF nanoplates assembled from 2-aminoterephthalic acid(NH_(2)-BDC) and p-phenylenediamine(PDA) as both soft templates and C,N precursors.Benefitting from the structural merits inherited from HOF templates,the optimized catalyst(denoted as Fe-N-C SAC-950) displays outstanding ORR activity with a high half-wave potential of 0.895 V(vs.reversible hydrogen electrode(RHE)) and a small overpotential of 356 mV at 10 mA cm^(-2) for the oxygen evolution reaction(OER).More excitingly,its application potential is further verified by delivering superb rechargeability and cycling stability with a nearly unfading charge-discharge gap of 0.72 V after 160 h.Molecular dynamics(MD) simulations reveal that micro/mesoporous structure is conducive to the rapid mass transfer of O_(2),thus enhancing the ORR performance.In situ Raman results further indicate that the conversion of O_(2) to~*O_(2)-the rate-determining step(RDS) for Fe-N-C SAC-950.This work will provide a versatile strategy to construct single atom catalysts with desirable catalytic properties. | Ruixue Zheng Qinglei Meng Hao Zhang Teng Li Di Yang Li Zhang Xiaolong Jia Changpeng Liu Jianbing Zhu Xiaozheng Duan Meiling Xiao Wei Xing | 2024 | Journal of Energy Chemistry2024，90，3： | 0 |
| 12 | Positive feedback between retinoic acid and 2-phospho-L-ascorbic acid trisodium salt during somatic cell reprogramming显示文摘Retinoic acid(RA)and 2-phospho-L-ascorbic acid trisodium salt(AscPNa)promote the reprogramming of mouse embryonic fibroblasts to induced pluripotent stem cells.In the current studies,the lower abilities of RA and AscPNa to promote reprogramming in the presence of each other suggested that they may share downstream pathways at least partially.The hypothesis was further supported by the RNA-seq analysis which demonstrated a high-level overlap between RA-activated and AscPNa activated genes during reprogramming.In addition,RA upregulated Glut1/3,facilitated the membrane transportation of dehydroascorbic acid,the oxidized form of L-ascorbic acid,and subsequently maintained intracellular L-ascorbic acid at higher level and for longer time.On the other hand,AscPNa facilitated the mesenchymal-epithelial transition during reprogramming,downregulated key mesenchymal transcriptional factors like Zeb1 and Twist1,subsequently suppressed the expression of Cyp26a1/b1 which mediates the metabolism of RA,and sustained the intracellular level of RA.Furthermore,the different abilities of RA and AscPNa to induce mesenchymal-epithelial transition,pluripotency,and neuronal differentiation explain their complex contribution to reprogramming when used individually or in combination.Therefore,the current studies identified a positive feedback between RA and AscPNa,or possibility between vitamin A and C,and further explored their contributions to reprogramming. | Mengdan Zhang Qian Li Tingting Yang Fei Meng Xiaowei Lai Lining Liang Changpeng Li Hao Sun Jiaqi Sun Hui Zheng | 2020 | Cell Regeneration2020，9，1： | 0 |
| 13 | Low-rank representation based robust face recognition by two-dimensional whitening reconstruction显示文摘1 Introduction and main contributions Recently,low-rank representation(LRR)has been introduced and applied to capture the underlying low-dimensional struc-ture of data in pattern recognition and computer vision.LRR could detect the corruptions automatically during data recov-ery under mild conditions[1].In the sense of simultaneously optimizing the data representation,LRR is claimed to well capture the global structure of the data[2]. | Shuo FENG Changpeng WANG Hong SHU Tingyu ZHANG | 2020 | Frontiers of Computer Science2020，14，4： | 0 |
| 14 | Maneuver control at high angle of attack based on real-time optimization of integrated aero-propulsion显示文摘To reduce the propulsion system installation thrust loss under high angle of attack maneuvering,a control method based on real-time optimization of the integrated aeropropulsion is proposed.Firstly,based on data fitting and physical principle,an integrated onboard model of propulsion system is established,which can calculate various performance parameters of the propulsion system in real time,and has high accuracy and real-time performance.Secondly,to improve the compatibility of optimization real-time performance and search accuracy,the online optimization control of aero-propulsion system is realized based on an improved trust region algorithm.Finally,by controlling the auxiliary intake valve,a good match between inlet and engine is realized,which solves the problems of intake flow reducing and total pressure recovery coefficient declining,and improves the installation performance of propulsion system.The simulation results indicate that,compared with the conventional independent engine control,the real-time integrated optimization method reduces the installed thrust loss by 3.61%under the design condition,and 4.58%under the off-design condition.Furthermore,the simulation on HIL(Hardware-In-theLoop)platform verifies the real-time performance of integrated optimization method. | Juan FANG Qiangang ZHENG Changpeng CAI Haibo ZHANG | 2022 | Chinese Journal of Aeronautics2022，35，12： | 0 |
| 15 | Flow control of double bypass variable cycle engine in modal transition显示文摘To study the change mechanism and the control of the variable cycle engine in the process of modal transition,a variable cycle engine model based on component level characteristics is established.The two-dimensional CFD technology is used to simulate the influence of mode selection valve rotation on the engine flow field,which improves the accuracy of the model.Furthermore,the constant flow control plan is proposed in the modal transition process to reduce the engine installed drag.The constant flow control plan adopts the augmentation linear quadratic regulator control method.Simulation results indicate that the control method is able to effectively control the bypass ratio and demand flow of the variable cycle engine,and make the engine transform smoothly,which ensures the stable operation of the engine in modal transition and the constant demand flow of the engine. | Haoying CHEN Changpeng CAI Jiayi LUO Haibo ZHANG | 2022 | Chinese Journal of Aeronautics2022，35，10： | 0 |
| 16 | Million-scale data integrated deep neural network for phonon properties of heuslers spanning the periodic table显示文摘Existing machine learning potentials for predicting phonon properties of crystals are typically limited on a material-to-materialbasis, primarily due to the exponential scaling of model complexity with the number of atomic species. We address this bottleneckwith the developed Elemental Spatial Density Neural Network Force Field, namely Elemental-SDNNFF. The effectiveness andprecision of our Elemental-SDNNFF approach are demonstrated on 11,866 full, half, and quaternary Heusler structures spanning 55elements in the periodic table by prediction of complete phonon properties. Self-improvement schemes including active learningand data augmentation techniques provide an abundant 9.4 million atomic data for training. Deep insight into predicted ultralowlattice thermal conductivity (<1 Wm^(−1) K^(−1)) of 774 Heusler structures is gained by p–d orbital hybridization analysis. Additionally, aclass of two-band charge-2 Weyl points, referred to as “double Weyl points”, are found in 68% and 87% of 1662 half and 1550quaternary Heuslers, respectively. | Alejandro Rodriguez Changpeng Lin Hongao Yang Mohammed Al-Fahdi Chen Shen Kamal Choudhary Yong Zhao Jianjun Hu Bingyang Cao Hongbin Zhang Ming Hu | 2023 | npj Computational Materials2023，，1： | 0 |
| 17 | Superwetting Ag/α-Fe_(2)O_(3) anchored mesh with enhanced photocatalytic and antibacterial activities for efficient water purification显示文摘Superwetting materials have drawn unprecedented attention in the treatment of oily wastewater due to their preferable anti-fouling property and selective oil/water separation.However,it is still a challenge to fabricate multifunctional and environmentally friendly materials,which can be stably applied to purify the actual complicated wastewater.Here,a Ag/Ag/α-Fe_(2)O_(3) heterostructure anchored copper mesh was intentionally synthesized using a facile two-step hydrothermal method.The resultant mesh with superhydrophilicity and underwater superoleophobicity was capable of separating various oil/water mixtures with superior separation efficiency and high permeationflux driven by gravity.Benefiting from the joint effects of the smaller band gap of Ag/α-Fe_(2)O_(3) heterojunction,inherent antibacterial capacity of Ag/α-Fe_(2)O_(3) and Ag nanoparticles,favorable conductive substrate,as well as the hierarchical structure with superwettability,such mesh presented remarkably enhanced degradation capability toward organic dyes under visible light irradiation and antibacterial activity against both Escherichia coli(E.coli)and Staphylococcus aureus(S.aureus)compared with the pure Ag/α-Fe_(2)O_(3) coated mesh.Impressively,the mesh exhibited bifunctional water purification performance,in which organic dyes were eliminated simultaneously from water during oil/water separation in onefiltration process.More importantly,this mesh behaved exceptional chemical resistance,mechanical stability and long-term reusability.Therefore,this material with multifunctional integration may hold promising potential for steady water purification in practice. | Jiakai Li Changpeng Lv Jiajia Song Xiaoling Zhang Xizhen Huang Yingzhuo Ma Haijie Cao Na Liu | 2024 | Green Energy & Environment2024，9，1： | 0 |
| 18 | Highly dispersed L1_(2)-Pt_(3)Fe intermetallic particles supported on single atom Fe-N_(x)-C_(y)active sites for enhanced activity and durability towards oxygen reduction显示文摘Highly active and durable oxygen reduction reaction(ORR)catalysts with sufficient activity and stability of Pt are beneficial for the commercialization of proton exchange membrane fuel cells.Here we report an effective approach to prepare a composite catalyst comprising of ordered L1_(2)-Pt_(3)Fe intermetallic nanoparticles interact with single atom Fe-N_(x)-C_(y)active sites.The addition of Fe and the confinement effect of hierarchical porous structure limit the growth of intermetallic particle size(around2.5 nm).The ligand effect of the electron transfer from Fe to Pt and the synergistic interaction between L1_(2)-Pt_(3)Fe and Fe-N_(x)-C_(y)work together to reduce oxygen intermediates adsorption and improve kinetics process.Experimentally,the L1_(2)-Pt_(3)Fe/C_(Fe-N-C)catalyst shows high mass activity and specific activity at 1.010 A/mg_(Pt)and 1.166 mA/cm^(2),respectively,which are 5.8 and 5.1 times higher than those of commercial Pt/C(0.174 A/mg_(Pt)and 0.230mA/cm^(2)).Thanks to the more stable L1_(2)structure,L1_(2)-Pt_(3)Fe/C_(Fe-N-C)exhibits better durability(14mV E_(1/2)loss of L1_(2)-Pt_(3)Fe/C_(Fe-N-C)and 33 mV E_(1/2)loss of commercial Pt/C)after 30,000 cycles accelerated stress tests.The strategy to design and prepare small particle Pt-based intermetallic alloys coordinated with M-N-C active sites provides a new direction to obtain low-cost and easily prepared effective ORR catalysts. | Tuo Zhao Yang Li Jie Liu Xian Wang Jiayi Zhang Changpeng Liu Wei Xing Junjie Ge | 2023 | Chinese Chemical Letters2023，34，5： | 0 |
| 19 | The non-abelian Hodge correspondence on some non-K?hler manifolds显示文摘The non-abelian Hodge correspondence was established by Corlette(1988),Donaldson(1987),Hit chin(1987)and Simpson(1988,1992).It states that on a compact Kahler manifold(X,ω),there is a one-to-one correspondence between the moduli space of semi-simple flat complex vector bundles and the moduli space of poly-stable Higgs bundles with vanishing Chern numbers.In this paper,we extend this correspondence to the projectively flat bundles over some non-Kahler manifold cases.Firstly,we prove an existence theorem of Poisson metrics on simple projectively flat bundles over compact Hermitian manifolds.As its application,we obtain a vanishing theorem of characteristic classes of projectively flat bundles.Secondly,on compact Hermitian manifolds which satisfy Gauduchon and astheno-K?hler conditions,we combine the continuity method and the heat flow method to prove that every semi-stable Higgs bundle withΔ(E,?E)·[ωn-2]=0 must be an extension of stable Higgs bundles.Using the above results,over some compact non-Kahler manifolds(M,ω),we establish an equivalence of categories between the category of semi-stable(poly-stable)Higgs bundles(E,?E,φ)withΔ(E,?E)·[ωn-2]=0 and the category of(semi-simple)projectively flat bundles(E,D)with(-1)(1/2)FD=α■IdE for some real(1,1)-formα. | Changpeng Pan Chuanjing Zhang Xi Zhang | 2023 | Science China Mathematics2023，66，11： | 0 |
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