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| 1 | A wearable noncontact free-rotating hybrid nanogenerator for self-powered electronics显示文摘Self-powerability is a new trend in the development of portable devices.Harvesting biomechanical energy to power personal information electronics is of great significance.In this work,we report a wearable noncontact freerotating hybrid nanogenerator(WRG),which is constituted by a triboelectric nanogenerator and an electromagnetic generator.A continuous output over 2 seconds can be achieved during one instantaneous incentive by external force,which is improved by two orders of magnitude compared to other wearable nanogenerators due to its unique mechanical energy storage design.The WRG can be integrated into shoes to generate an output energy of 14.68 mJ in each stepping,which meets the power requirements of most personal information electronics.The wireless sensor,GPS,and smartphone can be powered by the WRG continuously.The WRG is expected to be applied in self-powered information electronics extensively in the future. | Dongjie Jiang Han Ouyang Bojing Shi Yang Zou Puchuan Tan Xuecheng Qu Shengyu Chao Yuan Xi Chaochao Zhao Yubo Fan Zhou Li | 2020 | InfoMat2020，2，6： | 8 |
| 2 | Self-crosslinkable chitosan-hyaluronic acid dialdehyde nanoparticles for CD44-targeted siRNA delivery to treat bladder cancer显示文摘Bladder cancer is one of the concerning malignancies worldwide,which is lacking effective targeted therapy.Gene therapy is a potential approach for bladder cancer treatment.While,a safe and effective targeted gene delivery system is urgently needed for prompting the bladder cancer treatment in vivo.In this study,we confirmed that the bladder cancer had CD44 overexpression and small interfering RNAs(siRNA)with high interfere to Bcl2 oncogene were designed and screened.Then hyaluronic acid dialdehyde(HAD)was prepared in an ethanol-water mixture and covalently conjugated to the chitosan nanoparticles(CS-HAD NPs)to achieve CD44 targeted siRNA delivery.The in vitro and in vivo evaluations indicated that the siRNA-loaded CS-HAD NPs(siRNA@CS-HAD NPs)were approximately 100 nm in size,with improved stability,high siRNA encapsulation efficiency and low cytotoxicity.CS-HAD NPs could target to CD44 receptor and deliver the therapeutic siRNA into T24 bladder cancer cells through a ligand-receptor-mediated targeting mechanism and had a specific accumulation capacity in vivo to interfere the targeted oncogene Bcl2 in bladder cancer.Overall,a CD44 targeted gene delivery system based on natural macromolecules was developed for effective bladder cancer treatment,which could be more conducive to clinical application due to its simple preparation and high biological safety. | Ye Liang Yonghua Wang Liping Wang Zhijuan Liang Dan Li Xiaoyu Xu Yuanbin Chen Xuecheng Yang Hongbo Zhang Haitao Niu | 2021 | Bioactive Materials2021，6，2： | 5 |
| 3 | Analysis of expressed sequence tags of a marine red alga,Gracilaria lemaneiformis显示文摘The expressed sequence tags (EST) has been proved to be a useful tool for discovering and identifying functional genes, especially in some species whose genetic information is unavailable. A total of 180 ESTs have been generated from a cDNA library of gametophytic Gracilaria lemaneiformis in this study. These clones are clustered into 151 groups, among which 8 groups are highly homologous to chloroplast genes and are abundant in the library. After searching for matches in the EST database of red alga, 22 groups are found to match with the registered ESTs of Rhodophyta and 6 with Gracilaria. Searching in the protein database reveal that 73 non-redundant clones have significant similarity to some known sequences, the majority of which are involved in photosynthesis, DNA transcription or translation, and 6, 4 and 3 clones are associated with growth or development, signal transduction and stress or defense response, respectively. | SUN Xue, YANG Guanpin, MAO Yunxiang, ZHANG Xuecheng, SUI Zhenghong and QIN Song(1. College of Marine Life Sciences, Ocean University of Qingdao, Qingdao 266003, China 2. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China) | 2002 | Progress in Natural Science:Materials International2002，12，7： | 4 |
| 4 | Normal family and the sequence of omitted functions显示文摘Let {fn} be a sequence of meromorphic functions on a plane domain D, whose zeros and poles have multiplicity at least 3. Let {hn} be a sequence of meromorphic functions on D, whose poles are multiple, such that {hn} converges locally uniformly in the spherical metric to a function h which is meromorphic and zero-free on D.If fn≠hn, then {fn} is normal on D. | CHEN QiaoYu YANG Liu PANG XueCheng | 2013 | Science China Mathematics2013，56，9： | 4 |
| 5 | Highly sensitive flexible capacitive pressure sensor with a broad linear response range and finite element analysis of micro-array electrode显示文摘With the continuous development of wearable electronics,health care and smart terminals,highly performance flexible pressure sensors present a huge application prospect.In this study,by introducing the micro-array structured electrodes and dielectric layers with high dielectric constant,capacitive pressure sensor fabricated with a brand new preparation strategy and highly sensitive is proposed.The prepared micro-array structure is the basis for sensors with high sensitivity.Besides,the contact area between the two electrodes changes from linear to planar with the increased loading,which result in a wider linear responding range.In addition,by introducing ceramic dielectric material-barium titanate(BT)fillers into the dielectric layer to increase it’s the dielectric constant,the sensitivity of the sensor shows two-fold increase.Moreover,the sensitivity gradients can be tuned by changing the loading contents of BT particles.Hence,compared with parallel board capacitive sensors with ordinary dielectric layer,these sensors exhibit excellent performance as follow,high sensitivity(up to 4.9 kPa^(-1))under low pressure range(0-2500 Pa),low detection limit(<1.7 Pa),short response time(<50 ms),a stable response over 5000 loading-unloading cycles,bending stability and an adjustable sensitivity.Further,the flexible pressure sensor can detect the pressure of the water droplets and monitor human movement behavior.With the facile design and excellent comprehensive properties,the flexible pressure sensor provides a new approach to improve the sensitivity and shows a broad application prospects in the wearable electronics,health care and smart terminals. | Longquan Ma Xuecheng Yu Yuanyuan Yang Yougen Hu Xinyu Zhang Huayuan Li Xing Ouyang Pengli Zhu Rong Sun Ching-ping Wong | 2020 | Journal of Materiomics2020，6，2： | 4 |
| 6 | Evaluation of Forest Damaged Area and Severity Caused by Ice-snow Frozen Disasters over Southern China with Remote Sensing显示文摘The accurate assessment of forest damage is important basis for the forest post-disaster recovery process and ecosystem management. This study evaluates the spatial distribution of damaged forest and its damaged severity caused by ice-snow disaster that occurred in southern China during January 10 to February 2 in 2008. The moderate-resolution imaging spectroradiometer(MODIS)13 Q1 products are used, which include two vegetation indices data of NDVI(Normalized Difference Vegetation Index) and EVI(Enhanced Vegetation Index). Furtherly, after Quality Screening(QS) and Savizky-Golay(S-G) filtering of MODIS 13 Q1 data, four evaluation indices are obtained, which are NDVI with QS(QSNDVI), EVI with QS(QSEVI), NDVI with S-G filtering(SGNDVI) and EVI with S-G filtering(SGEVI). The study provides a new way of firstly determining the threshold for each image pixel for damaged forest evaluation, by computing the pre-disaster reference value and change threshold with vegetation index from remote sensing data. Results show obvious improvement with the new way for forest damage evaluation, evaluation result of forest damage is much close to the field survey data with standard error of only 0.95 and 1/3 less than the result that evaluated from other threshold method. Comparatively, the QSNDVI shows better performance than other three indices on evaluating forest damages. The evaluated result with QSNDVI shows that the severe, moderate, mild damaged rates of Southern China forests are 47.33%, 34.15%, 18.52%, respectively. By analyzing the influence of topographic and meteorological factors on forest-vegetation damage, we found that the precipitation on freezing days has greater impact on forest-vegetation damage, which is regarded as the most important factor. This study could be a scientific and reliable reference for evaluating the forest damages from ice-snow frozen disasters. | WANG Xuecheng YANG Fei GAO Xing WANG Wei ZHA Xinjie | 2019 | Chinese Geographical Science2019，29，3： | 2 |
| 7 | Utilizing phase-shifted long-period fiber grating to suppress spectral broadening of a high-power fiber MOPA laser system显示文摘Suppressing nonlinear effects in high-power fiber lasers based on fiber gratings has become a hotspot.At present,research is mainly focused on suppressing stimulated Raman scattering in a high-power fiber laser.However,the suppression of spectral broadening,caused by self-phase modulation or four-wave mixing,is still a challenging attribute to the close distance between the broadened laser and signal laser.If using a traditional fiber grating with only one stopband to suppress the spectral broadening,the signal power will be stripped simultaneously.Confronting this challenge,we propose a novel method based on phase-shifted long-period fiber grating(PS-LPFG)to suppress spectral broadening in a high-power fiber master oscillator power amplifier(MOPA)laser system in this paper.A PS-LPFG is designed and fabricated on 10/130 passive fiber utilizing a point-by-point scanning technique.The resonant wavelength of the fabricated PS-LPFG is 1080 nm,the full width at half maximum of the passband is 5.48 nm,and stopband extinction exceeds 90%.To evaluate the performance of the PS-LPFG,the grating is inserted into the seed of a kilowattlevel continuous-wave MOPA system.Experiment results show that the 30 dB linewidth of the output spectrum is narrowed by approximately 37.97%,providing an effective and flexible way for optimizing the output linewidth of highpower fiber MOPA laser systems. | Yinxu Bian Kerong Jiao Xuecheng Wu Hua Shen Feiyan Yang Rihong Zhu | 2021 | High Power Laser Science and Engineering2021，9，3： | 2 |
| 8 | Non-metallic electronic regulation in CuCo oxy-/thio-spinel as advanced oxygen evolution electrocatalysts显示文摘Developing cost-effective and high-performance oxygen evolution reaction(OER)electrocatalysts has become the intense research on pursuing emerging renewable energy conversion,in which exploring and investigating the intrinsic nature of efficient and stable Cu Co spinel catalysts toward OER in alkaline media is highly desirable.Herein,Cu1–xCo2+xO4oxy-spinel nanoflakes are fabricated by a facile hydrothermal method with the oxidation of ammonia water.In the same condition,Cu1–xCo2+xS4thio-spinel nanospheres are formed without oxidation.In OER process,the as-obtained Cu1–xCo2+xO4nanoflakes and Cu1–xCo2+xS4nanospheres possess the anodic overpotential of 267 and 297 m V in alkaline media to drive the current density of 10 m A/cm^2,respectively,outperforming the state-of-the-art noble metal catalyst of RuO2.X-ray photoelectron spectroscopy analysis exhibits the higher ratio value of Co(Ⅲ)/Co(Ⅱ)in Cu1–xCo2+xO4than that in Cu1–xCo2+xS4,suggesting that the stronglyelectronegative oxygen efficiently predominates in regulating valence states of Co active sites in spinel structures.Remarkably,density functional theory simulation further reveals that the increased valence state of Co could accelerate the electron exchange between catalysts and oxygen adsorbates during electrocatalysis,thus contributing to the higher OER activity of Cu1–xCo2+xO4catalysts.This work provides deep insight regarding the significance of non-metal element(O and S)in Cu Co spinel structure catalysts,as well as presents a promising approach to exploit higher performance and grasp the mechanism of various non-noblemetal spinel catalysts for water oxidation. | Huan Yang Shuai Gao Dewei Rao Chaonan Zhang Xuecheng Zhou Shaokang Yang Jingjing Ye Shasha Yang Feili Lai Xiaohong Yan | 2021 | Science China Chemistry2021，64，1： | 1 |
| 9 | New modeling method of spiral bevel gears with spherical involute based on CATIA显示文摘 | HONG Zhaobin YANG Zhaojun ZHANG Xuecheng | 2011 | Proceedings of SPIE2011，7997，： | 1 |
| 10 | Generating Hierarchical Strokes from Urban Street Networks Based on Spatial Pattern Recognition显示文摘 | Yang Bisheng Luan Xuecheng Li Qingquan | 2011 | International Journal of Geographical Information Science2011，25，12： | 1 |
| 11 | Modified convolution method to reconstruct particle hologram with an elliptical Gaussian heam illumination显示文摘 | Wu Xuecheng Wu Yingchun Yang Jing | 2013 | Opt Express2013，21，12： | 1 |
| 12 | Study on Classification of Personality-Based Brand Archetype from the Perspective of Internet显示文摘Due to the rapid development,Internet has become the main field for brand building.Under this circumstance,the image of the brand is always consistent with the consumers' perception.Therefore,this study uses the method of text mining of search engine to explore the categories of brand archetype based on Brand Personality Theory from the perspective of Internet.The results find that 12 brand archetypes,including caregiver,sage,hero,innocent,dominator,creator,vitality,explorer,stylish woman,lover,cooperator,and vogue gentleman,have a high degree explanation.Deeper study uses case study to verify the reasonability and effectiveness of the classification standard. | CHEN Fei YUE Xin YANG Xuecheng GE Tingting | 2014 | China Communications2014，11，7： | 1 |
| 13 | Blurred Defocused Image Restoration Based on FRFT显示文摘A technique for restoring the blurred image resulted from defocusing of the lens is proposed in this paper,which is based on fractional Fourier transform (FRFT).The FRFT,as a powerful tool for the analysis of time-varying signals,is closely connected with the optical imaging system. FRFT also can describe optical imaging process just like Fresnel diffractions,so a defocused imaging model based on FRFT is established to explain the blur phenomena of defocusing image. The defocused imaging model is greatly different from the traditional point spread function (PSF) model,and enables to uncover the blur nature of non-focus image. Then,an image restoration method using the novel model is proposed to handle the blurred defocused image. The method adopted a new iterative phase retrieval approach which can approximately estimate phase signals from intensity signals of a single defocused image by means of FRFT. Restoring image may acquire sharp image by implementing inverse FRFT on complex image signal made from the estimated phase signals and intensity signals. Experimental results demonstrate that the method is effective in restoring blurred defocused image. | YANG Wentao FENG Zhuoming LIU Weizhong ZOU Xuecheng | 2007 | Wuhan University Journal of Natural Sciences2007，12，3： | 1 |
| 14 | Wavelet-based depth-of-field extension,accurate autofocusing and particle pairing for digital inline particle holography显示文摘 | Yingchun Wu Xuecheng Wu Jing Yang | 2014 | Appl Opt2014，53，4： | 1 |
| 15 | One-step In-situ Synthesis of Vacancy-rich CoFe2O4@Defective Graphene Hybrids as Bifunctional Oxygen Electrocatalysts for Rechargeable Zn-Air Batteries显示文摘Developing efficient catalysts toward both oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is the core task for rechargeable metal-air batteries.Although integration of two active components should be an effective method to produce the bifunctional catalysts in principle,traditional techniques still can not attain fine tunable surface structure during material-hybridization process.Herein,we present a facile short-time in-situ argon(Ar)plasma strategy to fabricate a high-performance bifunctional hybrid catalyst of vacancy-rich CoFe2O4 synergized with defective graphence(r-CoFe2O4@DG).Reflected by the low voltage gap of 0.79V in two half-reaction measurements,the striking capability to catalyze ORR/OER endows it excellent and durable performance in rechargeable Zn-air batteries,with a maximum power density of 155.2mW/cm^2 and robust stablility(up to 60h).Further experimental and theoretical studies validate its remarkable bifunctional energetics root from plasma-induced surface vacancy defects and interfacial charge polarization between DG and CoFe2O4. | WANG X in ZHUANG Linzhou JIA Yi ZHANG Lijie YANG Qin XU Wenjia YANG Dongjiang YAN Xuecheng ZHANG Longzhou ZHU Zhonghua BROWN Christopher L YUAN Pei YAO Xiangdong | 2020 | Chemical Research in Chinese Universities2020，36，3： | 1 |
| 16 | Advances in air pollution control for vessels in China显示文摘Vessel emissions have contributed a great deal to air quality deterioration in China.Hence,the Chinese government has promulgated a series of stringent emission regulations.It is in this context that vessel emission control technology research is in full swing.In particular,during the 13th Five-Year Plan,the air pollution control technology of vessels has greatly improved.Vessel emission control has followed two main governance routes:source emission reduction and aftertreatment technology.Source control focuses on alternative fuels,with two main directions,the development of new fuels and the modification of existing fuels.Moreover,after-treatment technologies have also been developed,including wet desulfurization technology using seawater or alkaline liquids as wet washing liquids and selective catalytic reduction(SCR)for the control of NOx emission.Due to China’s increasingly stringent emissions standards and regulations,work on the development of clean alternative fuels and further upgrading the collaborative application of after-treatment technologies to meet the near-zero-emissions requirements of vessels is still necessary. | Yanping Yang Yue Gong Ying Wang Xuecheng Wu Zhiying Zhou Weiguo Weng Yongxin Zhang | 2023 | Journal of Environmental Sciences2023，，1： | 1 |
| 17 | Mathematical model of spiral bevel gears manufactured by generating-line method 显示文摘 | Yang Zhaojun Wang Yankun Li Linan Zhang Xuecheng | 2001 | Advanced Materials Research2001，15，42011： | 1 |
| 18 | Influence of microstructure on dielectric strength of CuCr contact materials in a vacuum显示文摘 | DING Bingjun YANG Zhimao WANG Xuecheng | 2005 | Rare Metal Material and Engineering2005，34，2： | 1 |
| 19 | Stretchable graded multichannel self-powered respiratory sensor inspired by shark gill显示文摘Respiratory sensing provides a simple,non-invasive,and efficient way for medical diagnosis and health monitoring,but it relies on sensors that are conformal,accurate,durable,and sustainable working.Here,a stretchgll structure can convert transverse elastic deformation into longitudinal elastic deformation during stretching.able,multichannel respiratory sensor inspired by the structure of shark gill cleftis reported.The bionic shark Combining the optimized bionic shark gll structure with the piezoelectric and the triboelectric effect,the bionic shark gill respiratory sensor(BSG-RS)can produce a graded electrical response to different tensile strains.Based on this feature,BSG-RS can simultaneously monitor the breathing rate and breathing depth of the human body accurately,and realize the effective recognition of the different human body's breathing state under the supporting software,With good stretchability,wearabilit,acuracy,and long-term stability(50,0oo cycles),BSG-RS is expected to be applied as self-powered smart wearables for mobile medical diagnostic analysis in the future. | Yang Zou Yansong Gai Puchuan Tan Dongjie Jiang Xuecheng Qu Jiangtao Xue Han Ouyang Bojing Shi Linlin Li Dan Luo Yulin Deng Zhou Li Zhong Lin Wang | 2022 | Fundamental Research2022，2，4： | 1 |
| 20 | Normality Criteria of Meromorphic Functions Sharing a Meromorphic Function显示文摘Let F be a family of meromorphic functions in D,and let Ψ(≠0) be a meromorphic function in D all of whose poles are simple.Suppose that,for each f ∈F,f≠0 in D.If for each pair of functions {f,g}(?) F,f' and g' share Ψ in D,then F is normal in D. | Pai YANG Xue WANG Xuecheng PANG | 2014 | Journal of Mathematical Research with Applications2014，34，5： | 0 |
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