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| 1 | Spatiotemporal changes in vegetation coverage and its driving factors in the Three-River Headwaters Region during 2000-2011显示文摘The Three-River Headwaters Region(TRHR), which is the source area of the Yangtze River, Yellow River, and Lancang River, is of key importance to the ecological security of China. Because of climate changes and human activities, ecological degradation occurred in this region. Therefore, 'The nature reserve of Three-River Source Regions' was established, and 'The project of ecological protection and construction for the Three-River Headwaters Nature Reserve' was implemented by the Chinese government. This study, based on MODIS-NDVI and climate data, aims to analyze the spatiotemporal changes in vegetation coverage and its driving factors in the TRHR between 2000 and 2011, from three dimensions. Linear regression, Hurst index analysis, and partial correlation analysis were employed. The results showed the following:(1) In the past 12 years(2000–2011), the NDVI of the study area increased, with a linear tendency being 1.2%/10a, of which the Yangtze and Yellow River source regions presented an increasing trend, while the Lancang River source region showed a decreasing trend.(2) Vegetation coverage presented an obvious spatial difference in the TRHR, and the NDVI frequency was featured by a bimodal structure.(3) The area with improved vegetation coverage was larger than the degraded area, being 64.06% and 35.94%, respectively during the study period, and presented an increasing trend in the north and a decreasing trend in the south.(4) The reverse characteristics of vegetation coverage change are significant. In the future, degradation trends will be mainly found in the Yangtze River Basin and to the north of the Yellow River, while areas with improving trends are mainly distributed in the Lancang River Basin.(5) The response of vegetation coverage to precipitation and potential evapotranspiration has a time lag, while there is no such lag in the case of temperature.(6) The increased vegetation coverage is mainly attributed to the warm-wet climate change and the implementation of the ecological protection project. | LIU Xianfeng ZHANG Jinshui ZHU Xiufang PAN Yaozhong LIU Yanxu ZHANG Donghai LIN Zhihui | 2014 | Journal of Geographical Sciences2014，24，2： | 47 |
| 2 | Characterization and fine mapping of the rice blast resistance gene Pia显示文摘Blast,caused by Magnaporthe oryzae,is one of the most widespread and destructive diseases of rice.Breeding durable resistant cultivars(cvs) can be achieved by pyramiding of various resistance(R) genes.Pia,carried by cv.Aichi Asahi,was evaluated against 612 isolates of M.oryzae collected from 10 Chinese provinces.The Pia gene expresses weak resistance in all the provinces except for Jiangsu.Genomic position-ready marker-based linkage analysis was carried out in a mapping population consisting of 800 F2 plants derived from a cross of Aichi Asahi×Kasalath.The locus was defined in an interval of approximately 90 kb,flanked by markers A16 and A21.Four candidate genes(Pia-1,Pia-2,Pia-3,and Pia-4) ,all having the R gene conserved structure,were predicted in the interval using the cv.Nipponbare genomic sequence.Four candidate resistance gene(CRG) markers(A17,A25,A26,and A27) ,derived from the four candidates,were subjected to genotyping with the recombinants detected at the flanking markers.The first three markers completely co-segregated with the Pia locus,and the fourth was absent in the Aichi Asahi genome and disordered with the Pia locus and its flanking markers,indicating that the fourth candidate gene,Pia-4,could be excluded.Co-segregation marker-based genotyping of the three sets of differentials with known R gene genotypes revealed that the genotype of A26(Pia-3) perfectly matched the R gene genotype of Pia,indicating that Pia-3 is the strongest candidate gene for Pia. | ZENG XiaoShan YANG XianFeng ZHAO ZhengHong LIN Fei WANG Ling PAN QingHua | 2011 | Science China(Life Sciences)2011，54，4： | 13 |
| 3 | Novel constant-cladding tapered-core ytterbium-doped fiber for high-power fiber laser oscillator显示文摘Power scaling based on traditional ytterbium-doped fibers(YDFs)is limited by optical nonlinear effects and transverse mode instability(TMI)in high-power fiber lasers.Here,we propose a novel long tapered fiber with a constant cladding and tapered core(CCTC)along its axis direction.The tapered-core region of the fiber is designed to enhance the stimulated Raman scattering(SRS)threshold and suppress higher-order mode resonance in the laser cavity.The CCTC YDF was fabricated successfully with a modified chemical vapor deposition(MCVD)method combined with solution doping technology,which has a cladding diameter of 400µm and a varying core with a diameter of~24μm at both ends and~31μm in the middle.To test the performance of the CCTC fiber during high-power operation,an all-fiber laser oscillator based on a CCTC YDF was investigated experimentally.As a result,a maximum output power of 3.42 kW was achieved with an optical-to-optical efficiency of 55.2%,although the TMI effect was observed at an output power of~3.12 kW.The measured beam quality(M^(2)factor)was~1.7,and no sign of the Raman component was observed in the spectrum.We believe that CCTC YDF has great potential to simultaneously mitigate the SRS and TMI effects,and further power scaling is promising by optimizing the structure of the YDF. | Yun Ye Xianfeng Lin Xiaoming Xi Chen Shi Baolai Yang Hanwei Zhang Xiaolin Wang Jinyan Li Xiaojun Xu | 2021 | High Power Laser Science and Engineering2021，9，2： | 5 |
| 4 | Heat Aggregation Mechanisms of Hot Dry Rocks Resources in the Gonghe Basin, Northeastern Tibetan Plateau显示文摘Hot dry rock(HDR) is an important geothermal resource and clean energy source that may play an increasingly important role in future energy management. High-temperature HDR resources were recently detected in deep regions of the Gonghe Basin on the northeastern edge of the Tibetan Plateau, which led to a significant breakthrough in HDR resource exploration in China. This research analyzes the deep temperature distribution, radiogenic heat production, heat flow, and crustal thermal structure in the Qiaboqia Valley, Guide Plain, and Zhacanggou area of the Gonghe Basin based on geothermal exploration borehole logging data, rock thermophysical properties, and regional geophysical exploration data. The results are applied to discuss the heat accumulation mechanism of the HDR resources in the Gonghe Basin. The findings suggest that a low-velocity layer in the thickened crust of the Tibetan Plateau provides the most important source of constant intracrustal heat for the formation of HDR resources in the Gonghe Basin, whereas crustal thickening redistributes the concentrated layer of radioactive elements, which compensates for the relatively low heat production of the basal granite and serves as an important supplement to the heat of the HDR resources. The negative effect is that the downward curvature of the lithospheric upper mantle caused by crustal thickening leads to a small mantle heat flow component. As a result, the heat flows in the Qiaboqia Valley and Guide Plain of the Gonghe Basin are 106.2 and 77.6 m W/m2, respectively, in which the crust-mantle heat flow ratio of the former is 3.12:1, indicating a notably anomalous intracrustal thermal structure. In contrast, the crust-mantle heat flow ratio in the Guide Plain is 1.84:1, which reflects a typical hot crust-cold mantle thermal structure. The Guide Plain and Zhacanggou area show the same increasing temperature trend with depth, which reflects that their geothermal backgrounds and deep high-temperature environments are similar. These results provide important insight on the heat source mechanism of HDR resource formation in the Tibetan Plateau and useful guidance for future HDR resource exploration projects and target sites selection in similar areas. | LIN Wenjing WANG Guiling ZHANG Shengsheng ZHAO Zhen XING Linxiao GAN Haonan TAN Xianfeng | 2021 | Acta Geologica Sinica(English Edition)2021，95，6： | 5 |
| 5 | Effective suppression of the photodarkening effect in high-power Yb-doped fiber amplifiers by H2 loading显示文摘The radical suppression of the photodarkening effect and laser performance deterioration via H2 loading were demonstrated in high-power Yb-doped fiber(YDF)amplifiers.The photodarkening loss at equilibrium was114.4 d B/m at 702 nm in the pristine fiber,while it vanished in the H2-loaded fiber.To obtain a deeper understanding of the impact of photodarkening on laser properties,the evolution of the mode instability threshold and output power in fiber amplifiers was investigated.After pumping for 300 min,the mode instability threshold of the pristine fiber dropped from 770 to 612 W,and the periodic fluctuation of the output power became intense,finally reaching 100 W.To address the detrimental effects originating from photodarkening,H2 loading was applied in contrast experiments.The output power remained stable,and no sign of mode instability was observed in the H2-loaded fiber.Moreover,the transmittance at 638 nm confirmed the absence of the photodarkening effect.The results pave the way for the further development of high-power fiber lasers. | RUITING CAO GUI CHEN YISHA CHEN ZHILUN ZHANG XIANFENG LIN BIN DAI LUYUN YANG JINYAN LI | 2020 | Photonics Research2020，8，3： | 2 |
| 6 | Novel Graphene Biosensor Based on the Functionalization of Multifunctional Nano-bovine Serum Albumin for the Highly Sensitive Detection of Cancer Biomarkers显示文摘A simple,convenient,and highly sensitive bio-interface for graphene field-effect transistors(GFETs) based on multifunctional nano-denatured bovine serum albumin(nano-dBSA) functionalization was developed to target cancer bio-markers.The novel graphene–protein bioelectronic interface was constructed by heating to denature native BSA on the graphene substrate surface.The formed nano-d BSA film served as the cross-linker to immobilize monoclonal antibody against car-cinoembryonic antigen(anti-CEA mAb) on the graphene channel activated by EDC and Sulfo-NHS.The nano-dBSA film worked as a self-protecting layer of graphene to prevent surface contamination by lithographic processing.The improved GFETbiosensor exhibited good specificity and high sensitivity toward the target at an ultralow concentration of 337.58 fg mL-1.The electrical detection of the binding of CEA followed the Hill model for ligand–receptor interaction,indicating the negative binding cooperativity between CEA and anti-CEA mAb with a dissociation constant of 6.82×10-10M.The multifunctional nano-dBSA functionalization can confer a new function to graphene-like 2D nanomaterials and provide a promising bio-functionalization method for clinical application in biosensing,nanomedicine,and drug delivery. | Lin Zhou Kun Wang Hao Sun Simin Zhao Xianfeng Chen Dahong Qian Hongju Mao Jianlong Zhao | 2019 | Nano-Micro Letters2019，11，2： | 1 |
| 7 | Optical chemsensor based on etched tilted Bragg grating structures inmultimode fiber显示文摘 | Zhou Kaiming Zhang Lin | 2005 | IEEE Photon Technol Lett2005，17，4： | 1 |
| 8 | Implementation of optical chemsensors based on HF- etched fibre Bragg grating structures显示文摘 | Zhou Kaiming Chen Xianfeng Zhang Lin | 2006 | Measurement Science and Technology2006，17，5： | 1 |
| 9 | High Temperature Crystallization of Free‐Standing Anatase TiO2 Nanotube Membranes for High Efficiency Dye‐Sensitized Solar Cells显示文摘 | Jia Lin Min Guo Cho Tung Yip Wei Lu Guoge Zhang Xiaolin Liu Limin Zhou Xianfeng Chen Haitao Huang | 2013 | Mater2013，，47： | 1 |
| 10 | Carrier dynamic process in all-inorganic halide perovskites explored by photoluminescence spectra显示文摘Recently, all-inorganic halide perovskites have received enormous attention because of their excellent optoelectronic properties. Among them, the power conversion efficiency(PCE) of all-inorganic halide perovskite solar cells has made rapid progress in the last few years. However, understanding the intrinsic physical nature of halide perovskites, especially the dynamic process of photo-generated carriers, is a key for improving the PCE. In this review, we introduced and summarized the photoluminescence(PL) technique used to explore the carrier dynamic process in all-inorganic halide perovskites. Several physical models were proposed to investigate the dynamic parameters, i.e., recombination lifetime and diffusion length, by analyzing the steady-state PL as well as the time-resolved PL spectra. We also discussed the distinction of PL spectral behavior between bulk halide perovskite samples and those grown with transport layers due to the participation of different dominant dynamic paths.Finally, we briefly described some other optical techniques reported to study the relevant physical properties of all-inorganic halide perovskites. | JING CHEN CHAO ZHANG XIAOLIN LIU LIN PENG JIA LIN XIANFENG CHEN | 2021 | Photonics Research2021，9，2： | 1 |
| 11 | SARS-CoV-2 promote autophagy to suppress type I interferon response显示文摘Dear Editor,The outbreak of SARS-CoV-2 leads global epidemic with high morbidity and mortality.However,the pathophysiology of this deadly virus is complex and largely unknown.Autophagy is a highly conserved homeostatic process that allows cells to recycle their components.Several studies provided evidence that human coronavirus infections are closely related to various cellular aspects associated with autophagy.1 Autophagy may play a crucial role in the SARS-CoV-2 viral lifecycle. | Xianfeng Hui Linliang Zhang Lei Cao Kun Huang Ya Zhao Yufei Zhang Xi Chen Xian Lin Mingzhou Chen Meilin Jin | 2021 | Signal Transduction and Targeted Therapy2021，6，6： | 1 |
| 12 | Feature separation using ICA for a one-dimensional time series and its application in fault detection 显示文摘 | Zuo Ming J Lin Jing Fan Xianfeng | 2005 | Journal of Sound and Vibration2005，287，： | 1 |
| 13 | E-Commerce Education in China: Driving Forces, Status, and Strategies 显示文摘 | Xianfeng Zhang Qi Li Zhangxi Lin | 2005 | Journal of Electronic Commerce in Organizations2005，，3： | 1 |
| 14 | Chip-scale spontaneous quasi-phase matched second harmonic generation in a micro-racetrack resonator显示文摘In this paper,we demonstrate efficient spontaneous quasi-phase matched(SQPM)second harmonic generation(SHG)in a microracetrack resonator on X-cut thin film lithium niobate.Our approach does not involve poling,but exploits the anisotropy of the crystals to allow the phase-matching condition to be fulfilled spontaneously as the TE-polarized light circulates in a specifically designed racetrack resonator.In experiment,normalized on-chip conversion efficiencies of 1.01×10-4/W and 0.43×10-4/W are achieved by 37th-order and 111th-order SQPM,respectively.The configurable SQPM will benefit the application of nonlinear frequency conversion and quantum source generation in chip-scale integrated photonics compatible with standard CMOS fabrication processes. | Tingge Yuan Jiangwei Wu Yi'an Liu Xiongshuo Yan Haowei Jiang Hao Li Zhaokang Liang Qiang Lin Yuping Chen Xianfeng Chen | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，8： | 1 |
| 15 | Optical chemsensor based on etched tilted Bragg grating structures in muhimode fiber 显示文摘 | Cben Xianfeng Zhou Kaiming Zhang Lin | 2005 | IEEE Photon Technol Lett2005，17，4： | 1 |
| 16 | A Mild, General, Metal-Free Method for Desulfurization of Thiols and Disulfides Induced by Visible-Light显示文摘A visible-light-induced metal-free desulfurization method for thiols and disulfides has been explored.This radical desulfurization features mild conditions,robustness,and excellent functionality compatibility.It was successfully applied not only to the desulfurization of small molecules,but also to peptides. | Wenting Qiu Shuai Shi Ruining Li Xianfeng Lin Liangming Rao Zhankui Sun | 2021 | Chinese Journal of Chemistry2021，39，5： | 0 |
| 17 | Roadmap for rechargeable batteries:present and beyond显示文摘Rechargeable batteries currently hold the largest share of the electrochemical energy storage market,and they play a major role in the sustainable energy transition and industrial decarbonization to respond to global climate change.Due to the increased popularity of consumer electronics and electric vehicles,lithium-ion batteries have quickly become the most successful rechargeable batteries in the past three decades,yet growing demands in diversified application scenarios call for new types of rechargeable batteries.Tremendous efforts are made to developing the next-generation post-Li-ion rechargeable batteries,which include,but are not limited to solid-state batteries,lithium–sulfur batteries,sodium-/potassium-ion batteries,organic batteries,magnesium-/zinc-ion batteries,aqueous batteries and flow batteries.Despite the great achievements,challenges persist in precise understandings about the electrochemical reaction and charge transfer process,and optimal design of key materials and interfaces in a battery.This roadmap tends to provide an overview about the current research progress,key challenges and future prospects of various types of rechargeable batteries.New computational methods for materials development,and characterization techniques will also be discussed as they play an important role in battery research. | Sen Xin Xu Zhang Lin Wang Haijun Yu Xin Chang Yu-Ming Zhao Qinghai Meng Pan Xu Chen-Zi Zhao Jiahang Chen Huichao Lu Xirui Kong Jiulin Wang Kai Chen Gang Huang Xinbo Zhang Yu Su Yao Xiao Shu-Lei Chou Shilin Zhang Zaiping Guo Aobing Du Guanglei Cui Gaojing Yang Qing Zhao Liubing Dong Dong Zhou Feiyu Kang Hu Hong Chunyi Zhi Zhizhang Yuan Xianfeng Li Yifei Mo Yizhou Zhu Dongfang Yu Xincheng Lei Jianxiong Zhao Jiayi Wang Dong Su Yu-Guo Guo Qiang Zhang Jun Chen Li-Jun Wan | 2024 | Science China Chemistry2024，67，1： | 0 |
| 18 | Thermometric properties of Na_(2)Y_(2)TeB_(2)O_(10):Tb^(3+)green phosphor based on fluorescence/excitation intensity ratio显示文摘For noncontact optical thermometry,in contrast with fluorescence intensity ratio(FIR)technology,excitation intensity ratio(EIR)technology has been seriously limited due to low sensitivity.Moreover,by exploring all possible temperature-dependent response,developing multimode optical thermometry is of great importance.In this work,a new Na_(2)Y_(2)TeB_(2)O_(10):Tb^(3+)phosphor is obtained by a solid-state reaction.Based on FIR and EIR models of Tb',thermometric properties are studied thoroughly.Excellent relative and absolute sensitivity(S_(R)and S_(A))are acquired due to the significant difference in emission/excitation lines in response to temperature.Meanwhile,Tb^(3+)content-dependent luminescence quenching mechanism is discussed.This study shows a feasible route for exploiting well-performing FIR-/EIR-based thermometric materials. | Yuefei Xiang Lin Yang Canyuan Liao Xianfeng Xiang Xiangkai Tang Hanlin Tang Jing Zhu | 2023 | Journal of Advanced Ceramics2023，12，4： | 0 |
| 19 | Clinical Observation of 36 Cases of Dysphagia Treated with Acupuncture and Herbs显示文摘ClinicalObservationof36CasesofDysphagiaTreatedwithAcupunctureandHerbs￥YangZijiang;LinXianfeng(HospitalofTCMAltachedtoHandanMe... | Yang Zijiang Lin Xianfeng(Hospital of TCM Altached to Handan Medical Higher Training School) | 1995 | 中国针灸1995，15，S2： | 0 |
| 20 | A Composite Transformer-Based Multi-Stage Defect Detection Architecture for Sewer Pipes显示文摘Urban sewer pipes are a vital infrastructure in modern cities,and their defects must be detected in time to prevent potential malfunctioning.In recent years,to relieve the manual efforts by human experts,models based on deep learning have been introduced to automatically identify potential defects.However,these models are insufficient in terms of dataset complexity,model versatility and performance.Our work addresses these issues with amulti-stage defect detection architecture using a composite backbone Swin Transformer.Themodel based on this architecture is trained using a more comprehensive dataset containingmore classes of defects.By ablation studies on the modules of combined backbone Swin Transformer,multi-stage detector,test-time data augmentation and model fusion,it is revealed that they all contribute to the improvement of detection accuracy from different aspects.The model incorporating all these modules achieves the mean Average Precision(mAP)of 78.6% at an Intersection over Union(IoU)threshold of 0.5.This represents an improvement of 14.1% over the ResNet50 Faster Region-based Convolutional Neural Network(R-CNN)model and a 6.7% improvement over You Only Look Once version 6(YOLOv6)-large,the highest in the YOLO methods.In addition,for other defect detection models for sewer pipes,although direct comparison with themis infeasible due to the unavailability of their private datasets,our results are obtained from a more comprehensive dataset and have superior generalization capabilities. | Zifeng Yu Xianfeng Li Lianpeng Sun Jinjun Zhu Jianxin Lin | 2024 | Computers, Materials & Continua2024，78，1： | 0 |
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