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| 1 | Understanding the impact of mountain landscapes on water balance in the upper Heihe River watershed in northwestern China显示文摘Estimating the impact of mountain landscape on hydrology or water balance is essential for the sustainable development strategies of water resources.Specifically,understanding how the change of each landscape influences hydrological components will greatly improve the predictability of hydrological responses to mountain landscape changes and thus can help the government make sounder decisions.In the paper,we used the VIC(Variable Infiltration Capacity)model to conduct hydrological modeling in the upper Heihe River watershed,along with a frozen-soil module and a glacier melting module to improve the simulation.The improved model performed satisfactorily.We concluded that there are differences in the runoff generation of mountain landscape both in space and time.About 50% of the total runoff at the catchment outlet were generated in mid-mountain zone(2,900-4,000 m asl),and water was mainly consumed in low mountain region(1,700-2,900 m asl)because of the higher requirements of trees and grasses.The runoff coefficient was 0.37 in the upper Heihe River watershed.Barren landscape produced the largest runoff yields(52.46% of the total runoff)in the upper Heihe River watershed,followed by grassland(34.15%),shrub(9.02%),glacier(3.57%),and forest(0.49%).In order to simulate the impact of landscape change on hydrological components,three landscape change scenarios were designed in the study.Scenario 1,2 and 3 were to convert all shady slope landscapes at 2,000-3,300 m,2,000-3,700 m,and 2,000-4,000 m asl respectively to forest lands,with forest coverage rate increased to 12.4%,28.5% and 42.0%,respectively.The runoff at the catchment outlet correspondingly declined by 3.5%,13.1% and 24.2% under the three scenarios.The forest landscape is very important in water conservation as it reduced the flood peak and increased the base flow.The mountains as 'water towers' play important roles in water resources generation and the impact of mountain landscapes on hydrology is significant. | Jia QIN YongJian DING JinKui WU MingJie GAO ShuHua YI ChuanCheng ZHAO BaiSheng YE Man LI ShengXia WANG | 2013 | Journal of Arid Land2013，5，3： | 6 |
| 2 | Single-molecule optoelectronic devices:physical mechanism and beyond显示文摘Single-molecule devices not only promise to provide an alternative strategy to break through the miniaturization and functionalization bottlenecks faced by traditional semiconductor devices,but also provide a reliable platform for exploration of the intrinsic properties of matters at the single-molecule level.Because the regulation of the electrical properties of single-molecule devices will be a key factor in enabling further advances in the development of molecular electronics,it is necessary to clarify the interactions between the charge transport occurring in the device and the external fields,particularly the optical field.This review mainly introduces the optoelectronic effects that are involved in single-molecule devices,including photoisomerization switching,photoconductance,plasmon-induced excitation,photovoltaic effect,and electroluminescence.We also summarize the optoelectronic mechanisms of single-molecule devices,with particular emphasis on the photoisomerization,photoexcitation,and photo-assisted tunneling processes.Finally,we focus the discussion on the opportunities and challenges arising in the single-molecule optoelectronics field and propose further possible breakthroughs. | Peihui Li Yijian Chen Boyu Wang Mengmeng Li Dong Xiang Chuancheng Jia Xuefeng Guo | 2022 | Opto-Electronic Advances2022，5，5： | 2 |
| 3 | Effect of Dry Grinding on the Physicochemical Properties of Silica Materials Prepared from Kaolin Residue显示文摘 | Tang Aidong Su Linna Li Chuancheng | 2012 | Powder Technology2012，218，： | 1 |
| 4 | Late Paleoproterozoic extension and a paleostress field reconstruction of the North China Craton显示文摘 | Guiting Hou Chuancheng Wang Jianghai Li Xianglin Qian | 2006 | Tectonophysics2006，，1： | 1 |
| 5 | Two-dimensional van der Waals thin film transistors as active matrix for spatially resolved pressure sensing显示文摘The development of pressure sensor arrays capable of distinguishing the shape and texture details of objects is of considerable interest in the emerging fields of smart robots,prostheses,human-machine interfaces,and artificial intelligence(AI).Here we report an integrated pressure sensor array,by combining solution-processed two-dimensional(2D)MoS2 van der Waals(vdW)thin film transistor(TFT)active matrix and conductive micropyramidal pressure-sensitive rubber(PSR)electrodes made of polydimethylsiloxane/carbon nanotube composites,to achieve spatially revolved pressure mapping with excellent contrast and low power consumption.We demonstrate a 10×10 active matrix by using the 2D MoS2 vdW-TFTs with high on-off ratio>10^(6),minimal hysteresis,and excellent device-to-device uniformity.The combination of the vdW-TFT active matrix with the highly uniform micropyramidal PSR electrodes creates an integrated pressure sensing array for spatially resolved pressure mapping.This study demonstrates that the solution-processed 2D vdW-TFTs offer a solution for active-matrix control of pressure sensor arrays,and could be extended for other active-matrix arrays of electronic or optoelectronic devices. | Chao Ma Dong Xu Peiqi Wang Zhaoyang Lin Jingyuan Zhou Chuancheng Jia Jin Huang Shengtao Li Yu Huang Xiangfeng Duan | 2021 | Nano Research2021，14，10： | 1 |
| 6 | Late Paleoproterozoic extension and a paleo - stress field reconstruc- tion of the North China Craton 显示文摘 | Guiting Hou Chuancheng Wang Jianghai Li Xianglin Qian | 2006 | Tectonophysics2006，422，14： | 1 |
| 7 | Structural Transition Dynamics in Carbon Electrode-Based Single-Molecule Junctions显示文摘Monitoring the structural transitions of individual molecules is of great significance because it helps to in depth explore the properties of molecules and provide diverse possibilities for molecular applications in the fields of chemistry,biology and material science.This review summarizes the strategy of using single-molecule electrical approaches to study molecular structure transitions at the single-molecule level in real time.Specifically,through the use of stable single-molecule devices for real-time electrical monitoring,the process of molecular structure transitions of a single molecule can be investigated,which helps to explore the nature of molecules in chemical and biological systems.In particular,the detection methods have been extended to the investigation of biological macromolecules for monitoring the conformational changes of nucleotide chains in different systems,such as double helix DNA,aptamer and DNA enzyme.In the end,we discuss the future challenges of probing structural transitions of single molecules,and provide prospects for further breakthroughs in this field. | Peihui Li Chuancheng Jia Xuefeng Guo | 2021 | Chinese Journal of Chemistry2021，39，2： | 1 |
| 8 | Mutant alpha-synuclein and autophagy in PC12 cells显示文摘Several studies have demonstrated that overexpression of mutant α-synuclein in PC12 cells is related to occurrence of autophagy.The present study established mutant α-synuclein(A30P)-transfected PC12 cells and treated them with the autophagy inducer rapamycin and autophagy inhibitor wortmannin,respectively.Results demonstrated that mutantα-synuclein resulted in cell death via autophagy and involved α-synuclein accumulation,membrane lipid oxidation,and loss of plasma membrane integrity.Mutant α-synuclein(A30P)also mediated toxicity of 1-methyl-4-phenylpyridinium ion.Moreover,rapamycin inhibited α-synuclein aggregation,while wortmannin promoted α-synuclein aggregation and cell death.To further determine the role of autophagy due to mutant α-synuclein,the present study measured expression of microtubule-associated protein light chain 3.Results revealed that wortmannin and 1-methyl-4-phenylpyridinium ion inhibited expression of microtubule-associated protein light chain 3,while rapamycin promoted its expression.These findings suggested that abnormal aggregation of α-synuclein induced autophagic programmed cell death in PC12 cells. | Kangyong Liu Chunfeng Liu Chuancheng Ren Yaping Yang Liwei Shen Xuezhong Li Fen Wang Zhenghong Qin | 2011 | Neural Regeneration Research2011，6，2： | 0 |
| 9 | Enhancing the sensitivity of crack-based strain sensor assembled by functionalized graphene for human motion detection显示文摘Human motion detection needs sensors with flexibility,high sensitivity and linearity.However,conventional strain sensors are rigid and not suitable for human motion detection applications.Graphene-based strain sensors can overcome the above challenges but currently are still in the infancy of their development.In this work,properties of graphene-based crack-type strain sensors are investigated and guidelines to improve the sensitivity of graphene films as sensing elements are developed.First,it is found that the pre-strains influences the crack morphology and density,which further results in different sensor sensitivities and linearity.Second,the graphene film thickness influences the crack density due to the sliding between graphene layers;namely,a thinner graphene film with more cracks exhibits higher sensitivity.Third,the substrate influences the bonding strength with the graphene film,leading to different crack formations,which results in adjusted sensitivity.The cracks on PDMS are channel cracks while those on epoxy are isolated short cracks.The channel cracks are preferred to cause high sensitivity while the isolated short cracks hardly have a blocking effect on the current transport.Finally,the optimized graphene strain sensors are used to detect various human motions and exhibit high sensitivity. | HUANG YueHua XIANG Yi REN WenTao LI FengJi LI ChuanCheng YANG TingTing | 2021 | Science China(Technological Sciences)2021，64，8： | 0 |
| 10 | Robust nanoporous Cu/TiO_(2) ceramic filter membrane with promoted bactericidal function显示文摘Filter membrane technology has been extensively used for water purification.However,due to their high brittleness and biological fouling,filter membranes will gradually deteriorate.Here we develop a robust Cu/TiO_(2) ceramic filter membrane for water treatment,which has excellent inherent antibacterial activities both in the dark and under visible light irradiation.Onedimensional nanobelt TiO_(2) can be sintered into a nanoporous membrane structure by overlapping and interweaving with each other,thereby achieving high flux simultaneously and solving the problem of high brittleness of inorganic ceramics.Meanwhile,such one-dimensional TiO_(2) nanostructures can provide more deposition sites for Cu nanoparticles with inherent antibacterial activity in the dark.To realise the surface plasmon resonance-enhanced antibacterial activity under visible light,Cu/TiO_(2) heterostructures are used. | ZHOU Li SHI ChunYing XU XiaoHong JIA ChuanCheng | 2022 | Science China(Technological Sciences)2022，65，11： | 0 |
| 11 | Spatial interpolation of orchard soil pH using soil type and planting duration as auxiliary information显示文摘Intensified field management in orcahrds has resulted in significant and widespread acidification in the soils.However,effectively mapping the spatial patterns of soil pH aiming to support ecological management is impeded by its large variotions across soil types and planting durations.Kriging methods were used to integrate soil type and planting duration information for effective mapping of orchard soil pH in a case study in orchards of the Northeast Jiaodong Peninsula,East China.A total o f 1472 surface soil samples were collected,and the planting duration o f each sampled orchard was acquired to generate a planting duration map via Voronoi tessellations.The performance of five kriging methods was compared,namely,ordinary kriging(OK),OK combined with soil type(OK_ST),OK combined with planting duration(OK_PD),cokriging combined with soil type and planting duration(OCK_STPD),and OK combined with soil type and planting duration(OK_STPD).Results showed that soil pH declined significantly with increasing planting duration and exhibited moderate spatial variability over the study area.Soil type and planting duration both had significant influence on the spatial distribution of soil pH.The OCK_STPD and OK_STPD methods showed better prediction efficiency than OK,OK_ST,or OK_PD.With regard to the predicted maps of soil pH,the OCK_STPD and OK_STPD methods highly reflected local variations associated with soil type and planting duration,but the OK method was poorly representative.Categorical soil type and planting duration information may be used as ancillary information to improve the mapping quality o f orchard soil pH.The OCK_STPD and OK_STPD methods were practical and efficient methods for interpolating orchard soil pH in the study area.The resultant high-quality soil pH maps can contribute to improved site-specific management in the orchards. | Chuancheng FU Haibo ZHANG Chen TU Lianzhen LI Xinghua LIU Yongming LUO | 2020 | Pedosphere2020，30，5： | 0 |
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