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| 1 | Exercise-induced irisin in bone and systemic irisin administration reveal new regulatory mechanisms of bone metabolism显示文摘Irisin is a polypeptide hormone derived from the proteolytic cleavage of fibronectin-type III domaincontaining 5(FNDC5) protein. Once released to circulation upon exercise or cold exposure, irisin stimulates browning of white adipose tissue(WAT) and uncoupling protein 1(UCP1) expression, leading to an increase in total body energy expenditure by augmented UCP1-mediated thermogenesis. It is currently unknown whether irisin is secreted by bone upon exercise or whether it regulates bone metabolism in vivo. In this study, we found that 2 weeks of voluntary wheel-running exercise induced high levels of FNDC5 messenger RNA as well as FNDC5/irisin protein expression in murine bone tissues. Increased immunoreactivity due to exercise-induced FNDC5/irisin expression was detected in different regions of exercised femoral bones,including growth plate, trabecular bone, cortical bone, articular cartilage, and bone–tendon interface. Exercise also increased expression of osteogenic markers in bone and that of UCP1 in WAT, and led to bodyweight loss. Irisin intraperitoneal(IP) administration resulted in increased trabecular and cortical bone thickness and osteoblasts numbers, and concurrently induced UCP1 expression in subcutaneous WAT. Lentiviral FNDC5 IP administration increased cortical bone thickness. In vitro studies in bone cells revealed irisin increases osteoblastogenesis and mineralization, and inhibits receptor activator of nuclear factor-k B ligand(RANKL)-induced osteoclastogenesis. Taken together, our findings show that voluntary exercise increases irisin production in bone, and that an increase in circulating irisin levels enhances osteogenesis in mice. | Jin Zhang Paloma Valverde Xiaofang Zhu Dana Murray Yuwei Wu Liming Yu Hua Jiang Michel M Dard Jin Huang Zhiwei Xu Qisheng Tu Jake Chen | 2017 | Bone Research2017，5，1： | 23 |
| 2 | Synthesis of condensed polynuclear aromatic resin from furfural extract oil of reduced-pressure route Ⅱ显示文摘As an industrial byproduct of oil refining,furfural extract oil from reduced-pressure route Ⅱ with high aromatic content was used to prepare heat-resistant condensed polynuclear aromatic(COPNA) resin for the first time.The basic properties of furfural extract oil and the resultant COPNA resin were characterized by infrared spectroscopy(FT-IR),nuclear magnetic resonance spectroscopy(1H-NMR),thermogravimetric analysis(TGA) and elemental analysis(EA).The result showed that heat treated furfural extract oil was successfully used for the synthesis of heat-resistant COPNA resin.The average structural parameters of raw materials and prepared resin were calculated by the improved Brown-Ladner method,and the averaged molecular structure of the resin was obtained.The reaction mechanism for the synthesis of COPNA resin was suggested as an acid-catalyzed positive ion type polymerization. | Wu Mingbo Jiang Wei Wang Yuwei Li Shibin Zheng Jingtang | 2013 | Petroleum Science2013，10，4： | 10 |
| 3 | Performance of bimetallic nanoscale zero-valent iron particles for removal of oxytetracycline显示文摘In this study, bimetallic nanoscale zero-valent iron particles(nZVI), including copper/nanoscale zero-valent iron particles(Cu/nZVI) and nickel/nanoscale zero-valent iron particles(Ni/nZVI), were synthesized by one-step liquid-phase reduction and applied for oxytetracycline(OTC) removal. The effects of contact time and initial p H on the removal efficiency were studied. The as-prepared nanoscale particles were characterized by scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and X-ray diffraction(XRD). Finally, the degradation mechanisms of OTC utilizing the as-prepared nanoparticles were investigated by using X-ray photoelectron spectroscopy(XPS) and mass spectrometry(MS). Cu/n ZVI presented remarkable ability for OTC degradation and removed71.44% of OTC(100 mg/L) in 4 hr, while only 62.34% and 31.05% of OTC was degraded by Ni/nZVI and nZVI respectively. XPS and MS analysis suggested that OTC was broken down to form small molecules by ·OH radicals generated from the corrosion of Fe0. Cu/nZVI and Ni/n ZVI have been proved to have potential as materials for application in OTC removal because of their significant degradation ability toward OTC. | Yuwei Wu Qinyan Yue Yuan Gao Zhongfei Ren Baoyu Gao | 2018 | Journal of Environmental Sciences2018，30，7： | 9 |
| 4 | Synthesis and Characterization of Condensed Polynuclear Aromatic Resin Derived from Ethylene Tar显示文摘As a kind of low-cost and readily available industrial byproduct, ethylene tar (ET) was for the first time utilized for the preparation of heat-resistant condensed polynuclear aromatic resin (COPNAR). The basic properties of ET and the resulted COPNAR were characterized by FT-IR, 1H-NMR, TGA and elemental analysis. The test results showed that ET with high aromatic content (>50%) was suitable for the synthesis of COPNAR with superior heat resistance. The average molecular structure of ET was obtained by means of the improved Brown-Ladner method, and the reaction mechanism was considered as an acid-catalyzed positive ion-typed polymerization. Our findings have provided a new route to develop ET into technology-added heat-resistant resins. | Wu Mingbo Shi Yangyang Li Shibin Wang Yuwei Tan Minghui Wang Ding Zheng Jingtang Tsubaki Noritatsu | 2012 | China Petroleum Processing & Petrochemical Technology2012，14，4： | 7 |
| 5 | Improvements of heat resistance and adhesive property of condensed poly-nuclear aromatic resin via epoxy resin modification显示文摘A bisphenol epoxy resin was used as modifier to increase the heat resistance of condensed poly-nuclear aromatic(COPNA) resin. The basic properties of COPNA resin and modified resin were characterized by Fourier transform infrared spectroscopy(FT-IR), nuclear magnetic resonance spectroscopy(1H-NMR), vapor pressure osmometry(VPO) and elemental analysis(EA). Average structural parameters of resins were calculated by the improved Brown-Ladner method, and heat resistance of resins was tested by thermogravimetric analysis(TGA). The chemical structure, mechanical properties and heat resistivity of the resin/graphite composites prepared with different resins were compared. The results show that the adhesive property and heat resistance of COPNA resin can be remarkably improved by addition of 5 wt.% epoxy resin. The reason is that the reactions between epoxy groups of epoxy resin and hydroxyl groups of COPNA resin improve the heat resistance and adhesive property of COPNA resin. Electric motor brushes with good mechanical properties and low electrical resistivity were successfully prepared by using the modified resin as binder. | Wu Mingbo Wang Yuwei Jiang Wei Li Shibin Sun Qiqian Zheng Jingtang Qiu Jieshan | 2014 | Petroleum Science2014，11，4： | 5 |
| 6 | Suppression of MAPK11 or HIPK3 reduces mutant Huntingtin levels in Huntington's disease models显示文摘 | Meng Yu Yuhua Fu Yijian Liang Haikun Song Yao Yao Peng Wu Yuwei Yao Yuyin Pan Xue Wen Lixiang Ma Saiyin Hexige Yu Ding Shouqing Luo Boxun Lu | 2017 | Cell Research2017，27，12： | 5 |
| 7 | A grid-based clustering algorithm for wild bird distribution显示文摘 | Yuwei WANG Yuanchun ZHOU Ying LIU Ze LUO Danhuai GUO Jing SHAO Fei TAN Liang WU Jianhui LI Baoping YAN | 2013 | Frontiers of Computer Science2013，7，4： | 4 |
| 8 | The use of supercytokines, immunocytokines, engager cytokines, and other synthetic cytokines in immunotherapy显示文摘Cytokines exert powerful immunomodulatory effects that are critical to physiology and pathology in humans.The application of natural cytokines in clinical studies has not been clearly established,and there are often problems associated with toxicity or lack of efficacy.The key reasons can be attributed to the pleiotropy of cytokine receptors and undesired activation of off-target cells.With a deeper understanding of the structural principles and functional signals of cytokine-receptor interactions,artificial modification of cytokine signaling through protein engineering and synthetic immunology has become an increasingly feasible and powerful approach.Engineered cytokines are designed to selectively target cells.Herein,the theoretical and experimental evidence of cytokine engineering is reviewed,and the“supercytokines”resulting from structural enhancement and the“immunocytokines”generated by antibody fusion are described.Finally,the“engager cytokines”formed by the crosslinking of cytokines and bispecific immune engagers and other synthetic cytokines formed by nonnatural analogs are also discussed. | Xiaohu Zheng Yaqi Wu Jiacheng Bi Yingying Huang Ying Cheng Yangyang Li Yuwei Wu Guoshuai Cao Zhigang Tian | 2022 | Cellular & Molecular Immunology2022，19，2： | 4 |
| 9 | Next generation patient-derived prostate cancer xenograft models显示文摘对为前列腺癌症的更有效的治疗学的途径有批评需要。然而,在这个区域的研究被缺乏严重妨碍了临床上相关,在疾病的 vivo 模型试验性。这评论特别地基于 patients’ 的 subrenal 囊 grafting 集中于前列腺癌症异种皮移植模型的发展;进 nonobese 糖尿病 / 严重的肿瘤组织联合了 immunodeficient (NOD/SCID ) 老鼠。这种技术允许可移植的、导出病人的癌症织物异种皮移植线的成功的开发从不仅好攻击变形,而且从局部性的前列腺癌症纸巾。异种皮移植被发现了保留原来的恶意的关键生物性质,包括组织病理学说、分子的特征,肿瘤异质,对雄激素脱离的反应和变形能力。因此,他们是高度临床上相关并且在细胞、分子的层次,为个性化的癌症治疗屏蔽的药和现出症状之前的潜的药为前列腺癌症前进的研究提供珍贵工具测试的功效;特别当模型的一块面板习惯于盖子时许多疾病。这些异种皮移植模型能因此被看作前列腺癌症的下一代的模型。 | Dong Lin Hui Xue Yuwei Wang Rebecca Wu Akira Watahiki Xin Dong Hongwei Cheng Alexander W Wyatt Colin C Collins Peter W Gout Yuzhuo Wang | 2014 | Asian Journal of Andrology2014，16，3： | 4 |
| 10 | Learning online structural appearance model for robust object tracking显示文摘The main challenge of robust object tracking comes from the difficulty in designing an adaptive appearance model that is able to accommodate appearance variations.Existing tracking algorithms often perform self-updating of the appearance model with examples from recent tracking results to account for appearance changes.However,slight inaccuracy of tracking results can degrade the appearance model.In this paper,we propose a robust tracking method by evaluating an online structural appearance model based on local sparse coding and online metric learning.Our appearance model employs pooling of structural features over the local sparse codes of an object region to obtain a middle-level object representation.Tracking is then formulated by seeking for the most similar candidate within a Bayesian inference framework where the distance metric for similarity measurement is learned in an online manner to match the varying object appearance.Both qualitative and quantitative evaluations on various challenging image sequences demonstrate that the proposed algorithm outperforms the state-of-the-art methods. | YANG Min PEI MingTao WU YuWei JIA YunDe | 2015 | Science China(Information Sciences)2015，58，3： | 4 |
| 11 | Enzyme-electrolytic degradation of dichloromethane: Efficiency, kinetics and mechanism显示文摘Enzymatic electrolysis cell(EEC)has advantages over microbial electrolysis cell(MEC)due to the needless of microbe inoculation and high-efficiency of enzymatic reaction.In this study,an EEC was first applied to achieve the effective degradation of halogenated organic pollutants and dichloromethane(CH2Cl2)was utilized as a model pollutant.The results indicate that the degradation efficiency of CH2Cl2 after 2 hr reaction in the EEC was almost100%,which was significantly higher than that with enzyme(51.1%)or current(19.0%).The current induced the continuous regeneration of reduced glutathione(GSH),thus CH2Cl2 was degraded under the catalysis of GSH-dependent dehalogenase through stepwise dechlorination,and successively formed monochloromethane(CH3Cl)and methane(CH4).The kinetic result shows that with a current of 15 mA,the maximum specific degradation rate of CH2Cl2(3.77×10-3 hr-1)was increased by 5.7 times.The optimum condition for CH2Cl2 dechlorination was also obtained with pH,current and temperature of 7.0,15 mA and 35°C,respectively.Importantly,this study helps to understand the behavior of enzymes and the fate of halogenated organic pollutants with EEC,providing a possible treatment technology for halogenated organic pollutants. | Jianming Yu Meng Wu Yuwei Tang Jiaqi Shi Jun Hu Zhiliang Yu Jianmeng Chen | 2019 | Journal of Environmental Sciences2019，31，12： | 3 |
| 12 | Effect of stimulating the acupoints Feishu (BL 13) and Dazhui (GV14) on transdermal uptake of sinapine thiocyanate in asthma gel显示文摘OBJECTIVE: To investigate the effect of stimulating the acupoints Feishu(BL 13) and Dazhui(GV 14) on the transdermal uptake of sinapine thiocyanate contained in a gel used for the management of asthma.METHODS: Thirty Sprague-Dawley rats were randomly divided into three equal groups using a random number table: the Feishu(BL 13) acupoint group, the Dazhui(GV 14) acupoint group, and the nonacupoint group or control group. Using micro-dialysis technology, preprocessed skin probes were implanted into the rats at Feishu(BL 13), Dazhui(GV 14), and a nonacupoint site. Asthma gel was then placed on the skin at Feishu(BL 13), Dazhui(GV14) acupoints, and the nonacupoint for all groups.Dialysate was collected every 30 min for 12 h. The normalized concentration of sinapine thiocyanate in the skin was determined by high-performance liquid chromatography.RESULTS: The rat in vivo transdermal experiment demonstrated that the quantity-time equation showed a good linear correlation with zero-order kinetics(r > 0.99). The transdermal behavior was in accordance with the first-order rate open model in which the transdermal penetration rates and the accumulative amounts of sinapine thiocyanate in the skin at the acupoint sites were greater than those through the skin of the nonacupoint site. The systemic maximum concentration and the area under the curve of sinapine thiocyanate in the acupoint groups were significantly greater than in the nonacupoint group. A lag time was observed in both acupoint groups, but not in the nonacupoint group.CONCLUSION: Stimulating the acupoints promotes the percutaneous absorption of sinapine thiocyanate and also controls its release, reducing concentration fluctuations in the blood. | Fan Wentao Huang Yuwei Wang Lisheng Liao Weiguo Li Zhou Wu Yinai Liao Fengyun Yu Jianye Liu Qiang | 2017 | Journal of Traditional Chinese Medicine2017，37，4： | 3 |
| 13 | Temporal and spatial variability of phytoplankton in Lake Poyang: The largest freshwater lake in China显示文摘 | Zhaoshi Wu Yongjiu Cai Xia Liu Cai Ping Xu Yuwei Chen Lu Zhang | 2013 | Journal of Great Lakes Research2013，，： | 3 |
| 14 | Auxin response factor 6A regulates photosynthesis,sugar accumulation,and fruit development in tomato显示文摘Auxin response factors(ARFs)are involved in auxin-mediated transcriptional regulation in plants.In this study,we performed functional characterization of SlARF6A in tomato.SlARF6A is located in the nucleus and exhibits transcriptional activator activity.Overexpression of SlARF6A increased chlorophyll contents in the fruits and leaves of tomato plants,whereas downregulation of SlARF6A decreased chlorophyll contents compared with those of wild-type(WT)plants.Analysis of chloroplasts using transmission electron microscopy indicated increased sizes of chloroplasts in SlARF6A-overexpressing plants and decreased numbers of chloroplasts in SlARF6A-downregulated plants.Overexpression of SlARF6A increased the photosynthesis rate and accumulation of starch and soluble sugars,whereas knockdown of SlARF6A resulted in opposite phenotypes in tomato leaves and fruits.RNA-sequence analysis showed that regulation of SlARF6A expression altered the expression of genes involved in chlorophyll metabolism,photosynthesis and sugar metabolism.SlARF6A directly bound to the promoters of SlGLK1,CAB,and RbcS genes and positively regulated the expression of these genes.Overexpression of SlARF6A also inhibited fruit ripening and ethylene production,whereas downregulation of SlARF6A increased fruit ripening and ethylene production.SlARF6A directly bound to the SAMS1 promoter and negatively regulated SAMS1 expression.Taken together,these results expand our understanding of ARFs with regard to photosynthesis,sugar accumulation and fruit development and provide a potential target for genetic engineering to improve fruit nutrition in horticulture crops. | Yujin Yuan Xin Xu Zehao Gong Yuwei Tang Mengbo Wu Fang Yan Xiaolan Zhang Qian Zhang Fengqing Yang Xiaowei Hu Qichen Yang Yingqing Luo Lihua Mei Wenfa Zhang Cai-Zhong Jiang Wangjin Lu Zhengguo Li Wei Deng | 2019 | Horticulture Research2019，6，1： | 3 |
| 15 | Two-dimensional multimetallic sulfide nanosheets with multi-active sites to enhance polysulfide redox reactions in liquid Li2S6-based lithium-polysulfide batteries显示文摘The lithium-sulfur battery has attracted enormous attention as being one of the most significant energy storage technologies due to its high energy density and cost-effectiveness.However,the 'shuttle effect' of polysulfide intermediates represents a formidable challenge towards its wide applications.Herein,we have designed and synthesized two-dimensional Cu,Zn and Sn-based multimetallic sulfide nanosheets to construct multi-active sites for the immobilization and entrapment of polysulfides with offering better performance in liquid Li2S6-based lithium-polysulfide batteries.Both experimental measurements and theoretical computations demonstrate that the interfacial multi-active sites of multimetallic sulfides not only accelerate the multi-chained redox reactions of highly diffusible polysulfides,but also strengthen affinities toward polysulfides.By adopting multimetallic sulfide nanosheets as the sulfur host,the liquid Li2 S6-based cell exhibits an impressive rate capability with 1200 mAh/g and retains 580 mAh/g at 0.5 mA/cm^(2) after 1000 cycles.With high sulfur mass loading conditions,the cell with 2.0 mg/cm^(2) sulfur loading delivers a cell capacity of 1068 mAh/g and maintains 480 mAh/g with 0.8 mA/cm^(2) and 500 cycles.This study provides new insights into the multifunctional material design with multi-active sites for elevated lithium-polysulfide batteries. | Chenyang Zha Donghai Wu Yuwei Zhao Jun Deng Jinghua Wu Rong Wu Meng Yang Lin Wang Houyang Chen | 2021 | Journal of Energy Chemistry2021，30，1： | 3 |
| 16 | Author correction to'Ruscogenin alleviates LPS-triggered pulmonary endothelial barrier dysfunction through targeting NMMHC IIA to modulate TL R4 signaling’[Acta Pharmaceutica Sinica B 12(2022)1198-1212]显示文摘The authors regret that there were some errors or inexact de-scriptions in author afiliation,the section of materials and methods,and the figure caption of Fig.2A owing to the negligence of authors when writing the manuscript,and there was a picture error in Fig.10 and graphical abstract figure owing to the inappropriate selection for the picture of Radix Ophiopogon japonicus.In author afiliation,'Department of Pharmacology of Chinese Material Medica'should be corrected to'Department of Pharmacology of Chinese Materia Medica'.In 2.4. | Yunhao Wu Xiu Yu Yuwei Wang Yalin Huang Jiahui Tang Shuaishuai Gong Siyu Jiang Yuanli Xia Fang Li Boyang Yu Yuanyuan Zhang Junping Kou | 2022 | Acta Pharmaceutica Sinica B2022，12，7： | 3 |
| 17 | Integrated bioinformatics identifies the dysregulation induced by aberrant gene methylation in colorectal carcinoma显示文摘Colorectal carcinoma(CRC)is one of the most common cancers,and is associated with a poor dlinical outcome.The key genes and potential prognostic markers in colorectal carcinoma remain to be identfed and explored for clinical application.DNA expression/methyl-ation profles were downloaded from the Gene Expression Omnibus(GEO)database to identify differentially expressed/methylated genes(DEGs and DEMs).A total of 255 genes and 372 genes were identified as being up-regulated and down-regulated,respectively,in GSE113513,GSE81558,and GSE89076.There were a total of 3350 hypermethylated genes and 443 hypomethylated genes identifed in GSE 48684.Twenty genes were found to be hypermethylated as well as down-regulated,and a functional enrichment analysis revealed that these genes were mainly involved in cancer-related pathways.Among these 20 genes,GPM6A,HAND2 and C2orf40 were related to poor outcomes in cancer patients based on a survival analysis.Concurrent decreases of GPM6A,HAND2 and C2orf40 protein expression were observed in highly-dif ferentiated colorectal carcinoma tissues,and higher expression levels were found in undifferentiated or minimally-differentiated colorectal carcinoma tissues.In conclusion,20 genes were found to be downregulated and hypermethylated in CRC,among which GPM6A,HAND2 and C2orf40 were explored for their potential prognostic value. | Zhenyu Ye Yecheng Li Jiaming Xie Zhenyu Feng Xiaodong Yang Yong Wu Yuwei Pu Jiawei Gao Xiangrong Xu Zhaobi Zhu Wei Li Wei Chen Chungen Xing | 2021 | Genes & Diseases2021，8，4： | 2 |
| 18 | A writable lithium metal ink显示文摘The recent revival of Li metal anodes(LMA)leads to a renewed interest in LMA as the ultimate choice for rechargeable lithium batteries towards high energy density.However,multiple challenges stand in the way of using LMA,of which high reactivity,dendrite growth,the difficulty of fabricating Li thin foils,and the flammability of organic liquid electrolytes are typical.Here,a writable Li metal ink(LMI)prepared by introducing biomass-derived carbon particles into molten Li is presented.Due to the significantly decreased surface tension,LMI is able to directly write on copper foils or other substrates that ultrathin Li foils with a remarkably small thickness(<10μm)can be achieved.The versatility of LMI is further demonstrated in addressing the interface issue between LMA and garnet-type solid-state electrolytes,where directly writing LMI on the garnet offers a perfect contact and enables an extremely low interfacial resistance of 6Ωcm^2,in sharp contrast to 939Ωcm^2 between the pure Li and the garnet.Due to the successful partnership with non-flammable solid-state electrolytes,ink-based technology may have a chance to bring us very close to the use of solid-state lithium metal batteries(SSLMBs)with high safety and high energy density. | Wangyan Wu Jian Duan Jiayun Wen Yuwei Chen Xuyang Liu Liqiang Huang Zhengfeng Wang Shengyuan Deng Yunhui Huang Wei Luo | 2020 | Science China Chemistry2020，63，10： | 2 |
| 19 | Magnetocaloric effect and slow magnetic relaxation behavior in binuclear rare earth based RE_(2)(L)_(2)(DMF)4(RE=Gd,Tb,and Dy) complexes显示文摘Three binuclear rare earth based complexes combining RE ions with semirigid tricarboxylic ligand(H_(3)L).namely,[RE_(2)(L)_(2)(DMF)_(4)][RE=Gd,Tb,and Dy;H_(3)L=5-((4-Carboxybenzyl)oxy)isophthalic acid;DMF=N,N-dimethylformamide]complexes,were fabricated success fully.The RE_(2)(L)_(2)(DMF)_(4) co mplexe s consist of two central RE ions with the same coordination environment which were connected by two tridentate bridging carboxylic groups and two syn-syn bidentate bridging carboxylic groups originating from the L^(3-)ligands to form the{RE_(2)}dimeric unit,and thus provides the basis for further constructing a dense three-dimensional(3 D)network structure.Moreover,the present RE_(2)(L)_(2)(DMF)_(4) complexes can be described by a topology diagram with the topology point symbol of{4^(2)·6}_(2){4^(4)·6^(2)·8^(7)·10^(2)}.Weak antiferromagnetic(AFM)coupling between the adjacent RE ions for all the present complexes was found according to the magnetic calculations.The observed significant cryogenic magnetocaloric effect(MCE)with the maximum magnetic entropy change-ΔS_(M)^(max) to be 26.3 J/(kg·K)withΔH=7 T in Gd_(2)(L)_(2)(DMF)_(4) complex makes it competitive for the cryogenic magnetic refrigerant.Moreover,the slow magnetic relaxation behavior at 0.2 T dc field with an obvious large U_(eff)/k=45(4)K and τ_(0)=6.5(2)×10^(-10)s was confirmed in Dy_(2)(L)_(2)(DMF)_(4)complex.This work not only provides an effective strategy for obtaining molecular materials with high MCE,but also confirms that tricarboxylate ligands are the ideal choice for constructing stable high dimensional geometric structures. | Zhenqian Zhang Yuwei Wu Haifeng Wang Lingwei Li | 2022 | Journal of Rare Earths2022，40，6： | 2 |
| 20 | A variational method for contour tracking via covariance matching显示文摘This paper presents a novel formulation for contour tracking.We model the second-order statistics of image regions and perform covariance matching under the variational level set framework.Specifically,covariance matrix is adopted as a visual object representation for partial differential equation(PDE) based contour tracking.Log-Euclidean calculus is used as a covariance distance metric instead of Euclidean distance which is unsuitable for measuring the similarities between covariance matrices,because the matrices typically lie on a non-Euclidean manifold.A novel image energy functional is formulated by minimizing the distance metric between the candidate object region and a given template,and maximizing the one between the background region and the template.The corresponding gradient flow is then derived according to a variational approach,enabling partial differential equations(PDEs) based contour tracking.Experiments on several challenging sequences prove the validity of the proposed method. | WU YuWei MA Bo LI Pei | 2012 | Science China(Information Sciences)2012，55，11： | 2 |
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