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Robust Watermarking of Mobile Video Resistant against Barrel Distortion

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China Communications 2016年第9期13卷 131-138页

作者： Huawei Tian Yanhui xiao Gang Cao Jianwei Ding Bo ou People's Public Security University of China Beijing100038China School of Computer Science Communication University of ChinaBeijing100024China College of Computer Science and Electronic Engineering Hunan UniversityChangsha410082China

In head mounted display(HMD),in order to cancel pincushion distortion,the images displayed on the mobile should be prewarped with barrel *** copyright of the mobile video should be verified on both the original view and the pre-warped virtual view.A robust watermarking resistant against barrel distortion for HMDs is proposed in this *** mask is embedded into image in consideration of imperceptibility and robustness of *** order to detect watermark from the pre-warped image with barrel distortion,an estimation method of the barrel distortion is proposed for ***,the same warp is enforced on the embedded watermark mask with the estimated parameters of barrel *** correlation between the warped watermark and the pre-warped image is computed to predicate the existence of *** shown in experimental results,watermark of mobile video can be detected not only from the original views,but also from the pre-warped virtual *** also shows that the proposed scheme is resistant against combined barrel distortion and common post-processing,such as JPEG compression.

关键词： mobile video HMD with mobile robust watermarking

Elevational patterns of functional diversity and trait of Delphinium(Ranunculaceae)in Hengduan Mountains,China

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Plant Diversity 2022年第1期44卷 20-29页

作者： Li-Shen Qian Hong-Hua Shi xiao-Kun ou Hang Sun School of Life Sciences Yunnan UniversityKunming650091China University of Chinese Academy of Sciences Beijing100049China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming650201China School of Ecology and Environmental Science Yunnan UniversityKunming650091China

Elevational patterns of trait occurrence and functional diversity provide an important perspective for understanding ***,previous studies have mostly examined functional diversity at the community ***,we examined large-scale patterns of trait occurrence and functional diversity in Delphinium along an elevational gradient from 1000 to 5700 m in the Hengduan Mountains,SW *** distribution and trait data of 102 Delphinium species were compiled to evaluate the patterns of interspecific traits,species richness,and functional *** found that the distribution of species richness showed a unimodal curve that peaked between 3500 and 4000 m;functional diversity and traits showed different patterns along an elevational gradient The functional diversity increased at a lower rate along an elevation gradient,whereas species richness continued to *** with large ranges and non-endemic species were most affected by geometric *** of species endemic to the Hengduan Mountains peaked at higher elevations,likely due to increased speciation and restricted dispersion under alpine *** conclude that the middle elevation region is not only the functionally richest but also the most functionally stable region for Delphinium,which could be insurance against environmental *** conditions and strong environmental filters in an alpine environment may cause the convergence of species traits,which could relate to reducing nutrient trait investment and increasing reproductive trait *** conclude that large-scale studies are consistent with previous studies at the community *** may indicate that the relationship between functional diversity and species richness across different scales is the same.

关键词： Elevational gradients Species richness Functional diversity Hengduan mountains

Biogenic silica in intertidal marsh plants and associated sediments of the Yangtze Estuary

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Journal of Environmental Sciences 2010年第3期22卷 374-380页

作者： Lijun Hou Min Liu Yi Yang Dongni ou xiao Lin Hui Chen State Key Laboratory of Estuarine and Coastal Research East China Normal University Shanghai 200062 China. Department of Geography Key Laboratory of Geographical Information Science of the Ministry of Education East China Normal University Shanghai 200062 China

Biogenic silica （BSi） contents in the marsh plants （Phragmites australis, Scirpus mariqueter and Spartina alterniflora） and associated sediments in Chongming Island eastern intertidal flat of the Yangtze Estuary were determined. The BSi contents in P. australis, S. mariqueter and S. alterniflora varied from 25.78–42.74 mg/g, 5.71–19.53 mg/g and 6.71–8.92 mg/g, respectively. Over the entire growth season, P. australis and S. mariqueter were characterized by linear accumulation patterns of BSi. The aboveground biomass （leaves and culms） of the marsh plants generally contained more BSi than underground biomass （roots）. BSi contents were relatively higher in dead plant tissues than in live tissues which was probably due to the decomposition and the leaching of labile components of plant tissues such as organic carbon and nitrogen. Comparing with the habitats of S. mariqueter and S. alterniflora, the highest BSi content was recorded in sediments inhabited by P. australis, with an annual average of 15.69 mg/g. Overall, the intertidal marshes in the Yangtze Estuary may act as a net sink of BSi via plant uptake and sedimentary burial.

关键词： biogenic silica marsh plants intertidal flat the Yangtze Estuary

基于“微生物-肠-脑轴”探讨补肾通腑方对APP/PS1小鼠肠道菌群及LPS/TLR4/NF-κB通路的影响

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中国药理学通报 2025年第1期41卷 171-178页

作者：王旭张杰赵敏宋晓雨段建平河南中医药大学第一附属医院脑病科河南郑州450000 河南中医药大学第一临床医学院河南郑州450000 中西医防治重大疾病河南省协同创新中心河南郑州450046

目的探讨补肾通腑方调控肠道菌群,改善阿尔茨海默病(Alzheimer’s disease,AD)模型小鼠学习记忆能力的作用机制。方法以APP/PS1小鼠为研究对象,给予补肾通腑方治疗8周,采用Morris水迷宫法观察小鼠空间学习记忆能力变化;16S rDNA检测小... 详细信息

目的探讨补肾通腑方调控肠道菌群,改善阿尔茨海默病(Alzheimer’s disease,AD)模型小鼠学习记忆能力的作用机制。方法以APP/PS1小鼠为研究对象,给予补肾通腑方治疗8周,采用Morris水迷宫法观察小鼠空间学习记忆能力变化;16S rDNA检测小鼠肠道菌群丰度、多样性变化;HE染色观察海马病理形态学变化;免疫荧光检测海马区小胶质细胞活化情况;Western blot检测TLR4、NF-κB、IL-6等炎症因子表达。结果与模型组相比,补肾通腑方可以缩短AD模型小鼠逃避潜伏期、游泳路径,增加跨越平台次数(P<0.05),提升肠道菌群多样性,调节肠道菌群丰度,促进海马神经元细胞损伤修复,降低iNOS/Iba1共表达,提高Arg1/Iba1共表达(P<0.01),促进小胶质细胞从M1型向M2型转化,下调TLR4、NF-κB、IL-6等促炎因子的表达。结论补肾通腑方改善AD模型小鼠学习记忆能力的作用机制可能与调节肠道菌群介导的LPS/TLR4/NF-κB通路,从而抑制促炎型小胶质细胞活化、减轻中枢神经系统炎症、改善海马区神经元细胞损伤有关。

关键词：阿尔茨海默病补肾通腑方肠道菌群 LPS/TLR4/NF-κB通路 16S rDNA 微生物-肠-脑轴

Effect of Ce on the thermal stability of the Ω phase in an Al-Cu-Mg-Ag alloy

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Rare Metals 2009年第2期28卷 156-159页

作者： song, Min xiao, Daihong Zhang, Fuqin State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China

This paper studies the effect of Ce on the thermal stability of the Ω phase in an Al-Cu-Mg-Ag alloy by TEM and tensile testing. It has been shown that Ce substantially increases the nucleation density of the Ω phase by acting as the heterogeneous nucleation center. Most impor-tantly,Ce improves the thermal stability of the Ω phase by decreasing the diffusion velocity of Cu atoms and increasing the energy barrier of the thickening ledge nucleation,thus improving the strength of the Al-Cu-Mg-Ag alloy at both ...

关键词： aluminium alloys Ω phase thermal stability Ce addition

On Characterization of Poisson Integrals of Schr?dinger Operators with Morrey Traces

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Acta Mathematica Sinica,English Series 2018年第4期34卷 787-800页

作者： Liang song xiao xiao TIAN Li Xin YAN Department of Mathematics Sun Yat-sen University

Let L be a Schrodinger operator of the form L = -△ ＋ V acting on L2（Rn） where the nonnegative potential V belongs to the reverse Holder class Bq for some q _〉 n. In this article we will show that a function f∈ L2,λ（Rn）, 0 〈λ 〈 n, is the trace of the solution of Lu = -utt ＋ Lu = O, u（x, 0） = f（x）, where u satisfies a Carleson type condition sup t-λB xB,rB∫τB 0∫B（xB,τB）t{ u（x,t）}2dxdt≤C〈∞.Its proof heavily relies on investigate the intrinsic relationship between the classical Morrey spaces and the new Campanato spaces .L2,λL（Rn） associated to the operator L, i.e. Conversely, this Carleson type condition characterizes all the L-harmonic functions whose traces belong to the space L2,λ（Rn） for all 0 〈λ〈 n.

关键词： SchrSdinger operators Dirichlet problem Morrey spaces Campanato spaces Poissonsemigroup

Direct fabrication of single-crystal-like structure using quasi-continuous-wave laser additive manufacturing

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Journal of Materials Science & Technology 2021年第1期60卷 216-221页

作者： Hui xiao Manping Cheng Lijun song State Key Laboratory of Advanced Design and Manufacturing for Vehicle Bodies Hunan UniversityChangsha 410082China Hunan Provincial Key Laboratory of Intelligent Laser Manufacturing Hunan UniversityChangsha 410082China School of Mechatronics Engineering Foshan UniversityFoshanGuangdong Province528001PR China

The synchronously periodic re-melting of molten pool was firstly introduced in additive manufacturing to promote the epitaxial growth of columnar structure using a novel quasi-continuous-wave(QCW)*** epitaxial growth of columnar structure was intensified and the single-crystal-like sample with highly oriented "zigzag" columnar grains was *** modified molten-pool geometry and the synchronously high-frequency re-melting of the molten pool contribute to the formation of singlecrystal-like *** work reports a new route to promote the continuously epitaxial growth of dendrites for fabrication of single-crystal-like sample.

关键词： Laser additive manufacturing Nickel alloys Solidification microstructure Texture Dendritic growth

α_(2) phase precipitation behavior and tensile properties at room temperature and 650℃ in an(α+β) titanium alloy

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Rare Metals 2021年第11期40卷 3261-3268页

作者： Wen-Jing Zhang xiao-Yun song song-xiao Hui Wen-Jun Ye Yang Yu Yan-Feng Li State Key Laboratory of Nonferrous Metals and Processes GRIMAT Engineering Institute Co.Ltd.Beijing 100088China

The microstructure,room temperature and 650℃ tensile properties of an(α+β) titanium alloy were investigated after aging over a temperature range of 600-750℃ following solution *** results exhibit that both aging temperature and aging time influence the precipitation behavior of α_(2) phase,and the size ofα_(2) phase affects the tensile *** growth speed ofα_(2) phase gets quicker with the aging temperature increasing under the same aging *** a given aging temperature,the size of α_(2) phase gets larger when prolonging the aging *** are significant improvements in yield and ultimate tensile strength at room temperature and 650 ℃ after aging at 600℃ for 2 h,but these values decrease with the size of α_(2) phase *** is found that α_(2) phase,less than 7 nm,does not impair the roomtemperature ***,when the size of α_(2) phase grows up from 7 to 15 nm,ductility decreases *** 650 ℃ tensile process,with the particle size increasing from 3 to 15 nm,the interaction between moving dislocations and coherent particles changes from cutting mechanism to bypass mechanism.

关键词： Aging treatment α_(2)phase Tensile properties Interaction mechanism

Proteolysis targeting chimera technology:a novel strategy for treating diseases of the central nervous system

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Neural Regeneration Research 2021年第10期16卷 1944-1949页

作者： Ke Ma xiao-xiao Han xiao-Ming Yang song-Lin Zhou Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury RepairCo-Innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina College of Life Science Nantong UniversityNantongJiangsu ProvinceChina

Neurological diseases such as stroke,Alzheimer’s disease,Parkinson’s disease,and Huntington’s disease are among the intractable diseases for which appropriate drugs and treatments are *** targeting chimera(PROTAC)technology is a novel strategy to solve this *** technology uses the ubiquitin-protease system to eliminate mutated,denatured,and harmful proteins in *** can be reused,and utilizes the protein destruction mechanism of the cells,thus making up for the deficiencies of traditional protein degradation *** can effectively target and degrade proteins,including proteins that are difficult to identify and ***,it has extremely important implications for drug development and the treatment of neurological *** present,the targeted degradation of mutant BTK,mHTT,Tau,EGFR,and other proteins using PROTAC technology is gaining *** is expected that corresponding treatment of nervous system diseases can be *** review first focuses on the recent developments in PROTAC technology in terms of protein degradation,drug production,and treatment of central nervous system diseases,and then discusses its *** review will provide a brief overview of the recent application of PROTAC technology in the treatment of central nervous system diseases.

关键词： Alzheimer’s disease disease treatment drug development Huntington’s disease proteolysis targeting chimera stroke targeted degradation