|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Secondary Metabolites of a Deep Sea Derived Fungus Aspergillus versicolor CXCTD-06-6a and Their Bioactivity显示文摘In order to obtain novel secondary metabolites, a deep sea inhabiting fungus Aspergillus versicolor CXCTD-06-6a was investigated. One new diketopiperazine brevianamide W(1a), as well as five known diketopiperazine alkaloids, diketopiperazine V(1b), brevianamide Q(2), brevianamide R(3), brevianamide K(4), and brevianamide E(5), were isolated from the Et OAc extract of the fermentation broth. Their structures were elucidated by spectroscopy techniques(NMR, MS). The six compounds exhibited moderate radical scavenging activity against DPPH with clearance ratio of 55.0%(1a and 1b), 53.7%(2), 46.2%(3), 61.4%(4) and 19.3%(5) at a concentration of 13.9 μmol L-1, respectively; while the positive control ascorbic acid showed a ratio of 70.3% at the concentration of 28.4 μmol L-1. | KONG Xianglan CAI Shengxin ZHU Tianjiao GU Qianqun LI Dehai LUAN Yepeng | 2014 | Journal of Ocean University of China2014，13，4： | 3 |
| 2 | High-resolution images based on directional fusion of gradient显示文摘This paper proposes a novel method for image magnification by exploiting the property that the intensity of an image varies along the direction of the gradient very quickly. It aims to maintain sharp edges and clear details. The proposed method first calculates the gradient of the low-resolution image by fitting a surface with quadratic polynomial precision. Then,bicubic interpolation is used to obtain initial gradients of the high-resolution(HR) image. The initial gradients are readjusted to find the constrained gradients of the HR image, according to spatial correlations between gradients within a local window. To generate an HR image with high precision, a linear surface weighted by the projection length in the gradient direction is constructed. Each pixel in the HR image is determined by the linear surface. Experimental results demonstrate that our method visually improves the quality of the magnified image. It particularly avoids making jagged edges and bluring during magnification. | Liqiong Wu Yepeng Liu Brekhna Ning Liu Caiming Zhang | 2016 | Computational Visual Media2016，2，1： | 3 |
| 3 | A Non-Ordinary State-Based Peridynamic Formulation for Failure of Concrete Subjected to Impacting Loads显示文摘Strain hardening and strain rate play an important role in dynamic deformation and failure problems such as high-velocity impact cases.In this paper,a non-ordinary state-based peridynamic model for failure and damage of concrete materials subjected to impacting condition is proposed,taking the advantages of both damage model and nonlocal peridynamic method.The Holmquist-Johnson-Cook(HJC)model describing the mechanical character and damage of concrete materials under large strain,high strain rate and high hydrostatic pressure was reformulated in the framework of non-ordinary statebased peridynamic theory,and the corresponding numerical approach was developed.The proposed model and numerical approach were validated through simulating typical impacting examples and comparing the results with available experimental observations and results in literature. | Liwei Wu Dan Huang Yepeng Xu Lei Wang | 2019 | Computer Modeling in Engineering & Sciences2019，，3： | 2 |
| 4 | De novo sequencing and comparative analysis of the blueberry transcriptome to discover putative genes related to antioxidants显示文摘 | Xiaoyan Li Haiyue Sun Jiabo Pei Yuanyuan Dong Fawei Wang Huan Chen Yepeng Sun Nan Wang Haiyan Li Yadong Li | 2012 | Gene2012，，1： | 1 |
| 5 | CHARACTER DETECTION AND RECOGNITION SYSTEM OF BEER BOTTLES显示文摘An optical imaging system and a configuration characteristic algorithm are presented to reducethe difficulties in extracting intact characters image with weak contrast, in recognizing characters on fastmoving beer bottles. The system consists of a hardware subsystem, including a rotating device, CCD, 16mm focus lens, a frame grabber card, a penetrating lighting and a computer, and a software subsystem. Thesoftware subsystem performs pretreatment, character segmentation and character recognition. In the pre-treatment, the original image is filtered with preset threshold to remove isolated spots. Then the horizontalprojection and the vertical projection are used respectively to retrieve the character segmentation. Subse-quently, the configuration characteristic algorithm is applied to recognize the characters. The experimentalresults demonstrate that this system can recognize the characters on beer bottles accurately and effectively;the algorithm is proven fast, stable and robust, making it suitable in the industrial environment. | Shen Bangxing Wu Wenjun Zhang Yepeng Shen Gang Yang Liangen | 2005 | Chinese Journal of Mechanical Engineering2005，18，3： | 1 |
| 6 | Multispectroscopic studies on the interaction of maltol, a food additive, with bovine serum albumin显示文摘 | Guowen Zhang Yadi Ma Lin Wang Yepeng Zhang Jia Zhou | 2012 | Food Chemistry2012，，2： | 1 |
| 7 | Journal of Zhejiang University Science 显示文摘 | GUAN Yepeng GU Weikang | 2004 | (7)2004，，7： | 1 |
| 8 | Three-dimensional elasticity solution of functionally graded rectangular plates with variable thiekness显示文摘 | Xu Yepeng Zhou Ding | 2009 | Comtms Structo2009，91，： | 1 |
| 9 | Cytotoxic metabolites from the antarctic psychrophilic fungus Oidiodendron truncatum显示文摘 | LI LIYUAN LI DEHAI LUAN YEPENG | | 0，，： | 1 |
| 10 | Spatio-temporal motion-based fore- ground segmentation and shadow suppression 显示文摘 | GUAN Yepeng | 2010 | IET Computer Vision2010，4，1： | 1 |
| 11 | The design and realization of tracking robot based on MCS-51 显示文摘 | WANG Li YAO Yepeng MA Guoqiang | 2009 | Journal of Capital Normal University: Natural Science Edition2009，30，1： | 1 |
| 12 | Transcriptome exploration in Leymus chinen- sis under saline-alkaline treatment using 454 pyrosequeneing显示文摘 | Yepeng Sun Fawei | 2013 | PloS one2013，8，1： | 1 |
| 13 | Unsupervised motion detection with background update and shadow suppression显示文摘一个算法被开发检测动人的目标并且压制阴影。根据一些动人的目标在景色引起的运动变化,一条背景更改途径被建议。发达更改方法高效地阻止背景的不希望得到的贪污并且不考虑改编系数或在一些存在算法使用的学习的率。多尺度的小浪变换方法论被用来从一个喧嚷背景分割前景。阀值价值的最佳的选择自动地被决定它不要求任何建筑群监督了训练或用手的刻度。根据光度计不变,颜色比率差别被建议压制阴影。一些完全的前景运动目标区域被处于颜色比率差别与阴影抑制在多尺度的小浪集成动人的目标分割提取。提及的方法被动人的目标的存在少些在景色影响。试验性的结果证明建议途径在检测运动目标并且由比较压制阴影是有效的。 | Yepeng GUAN | 2012 | 控制理论与应用(英文版)2012，10，4： | 1 |
| 14 | Tunicamycin suppresses cisplatin-induced HepG2 cell apoptosis via enhancing p53 protein nuclear export显示文摘 | ZHANG Lijuan LI Zaiquan YANG Yepeng | 2009 | Molecular Cell Biochemistry2009，327，： | 1 |
| 15 | Anti periodic boundary value problems for first order impulsive functional differential equations显示文摘 | Ding Wei Xing Yepeng Han Maoan | 2007 | Appl Math Comput2007，186，： | 1 |
| 16 | Age-dependent decreases in DNA methyltransferase levels and low transmethylation micronutrient levels synergize to promote overexpression of genes implicated in autoimmunity and acute coronary syndromes显示文摘 | LI Yepeng LIU Ying STRICKLAND F M | 2010 | Exp Gerontol2010，45，： | 1 |
| 17 | Entanglement Capabilities of Non-local Hamiltonianswith Maximally Entangled Ancillary Particles显示文摘 | YEPeng ZHENGYizhuang | 2004 | 量子光学学报2004，10，B09： | 0 |
| 18 | Multi-source genesis of continental carbonate-rich fine-grained sedimentary rocks and hydrocarbon sweet spots显示文摘This paper systematically discusses the multiple source characteristics and formation mechanisms of carbonate-rich fine-grained sedimentary rocks through the analysis of material source and rock formation.The hydrocarbon accumulation characteristics of carbonate-rich fine-grained sedimentary rocks are also summarized.The results show that the main reason for the enrichment of fine-grained carbonate materials in rift lake basins was the supply of multiple material sources,including terrestrial material input,formation of intrabasinal authigenic carbonate,volcanic-hydrothermal material feeding and mixed source.The development of carbonate bedrock in the provenance area controlled the filling scale of carbonate materials in rift lake basins.The volcanic-hydrothermal activity might provide an alkaline fluid to the lake basins to strengthen the material supply for the formation of carbonate crystals.Authigenic carbonate crystals induced by biological processes were the main source of long-term accumulation of fine-grained carbonate materials in the lake basins.Carbonate-rich fine-grained sedimentary rocks with multiple features were formed through the interaction of physical,biochemical and chemical processes during the deposition and post-deposition stages.The source and sedimentary origin of the fine-grained carbonate rock controlled the hydrocarbon accumulation in it.In the multi-source system,the types of'sweet spots'of continental shale oil and gas include endogenous type,terrigenous type,volcanic-hydrothermal type and mixed source type. | JIANG Zaixing KONG Xiangxin YANG Yepeng ZHANG Jianguo ZHANG Yuanfu WANG Li YUAN Xiaodong | 2021 | Petroleum Exploration and Development2021，48，1： | 0 |
| 19 | Blockchain-Based Trusted Electronic Records Preservation in Cloud Storage显示文摘Cloud storage represents the trend of intensive,scale and specialization of information technology,which has changed the technical architecture and implementation method of electronic records management.Moreover,it will provide a convenient way to generate more advanced and efficient management of the electronic data records.However,in cloud storage environment,it is difficult to guarantee the trustworthiness of electronic records,which results in a series of severe challenges to electronic records management.Starting from the definition and specification of electronic records,this paper firstly analyzes the requirements of the trustworthiness in cloud storage during their long-term preservation according to the information security theory and subdivides the trustworthiness into the authenticity,integrity,usability,and reliability of electronic records in cloud storage.Moreover,this paper proposes the technology framework of preservation for trusted electronic records.Also,the technology of blockchain,proofs of retrievability,the open archival information system model and erasure code are adopted to protect these four security attributes,to guarantee the credibility of the electronic record. | Zhiliang Deng Yongjun Ren Yepeng Liu Xiang Yin Zixuan Shen Hye-Jin Kim | 2019 | Computers, Materials & Continua2019，，1： | 0 |
| 20 | Digital Continuity Guarantee Method of Urban Construction Archives Based on Risk Management显示文摘With the broad application of information technology in urban infrastructure,urban construction has entered the stage of a smart city,forming many electronic records in urban construction.These electronic records play a vital role in the maintenance of urban infrastructure.However,electronic records often change in the process of urban construction.How to preserve the electronic records of urban construction became a significant challenge.In response to this problem,this paper proposes the use of risk-based management techniques to ensure the digital continuity,authenticity,integrity,and availability of electronic records. | Ran Ou Fei Chen Yongjun Ren Yepeng Liu Qirun Wang | 2019 | Journal on Big Data2019，1，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员