RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 좁혀본 항목 보기순서

        • 원문유무
        • 원문제공처
          펼치기
        • 등재정보
        • 학술지명
          펼치기
        • 주제분류
        • 발행연도
          펼치기
        • 작성언어

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        High Density Lipoprotein from Egg Yolk (EYHDL) Improves Dyslipidemia by Mediating Fatty Acids Metabolism in High Fat Diet-induced Obese Mice

        Zhihui Yu,Changyi Mao,Xing Fu,Meihu Ma 한국축산식품학회 2019 한국축산식품학회지 Vol.39 No.2

        We investigated the effect of high density lipoprotein from egg yolk (EYHDL) on serum, hepatic and fecal lipid and fatty acids (FAs) levels and on gene expression involved in FAs metabolism. Male KM mice were fed either normal diet (ND; n=20), high fat diet (HFD; n=20), or high fat diet containing EYHDL (EYHDL; 0.6 mg/g, every day by oral gavage, n=20) for 100 days. At the end of the experiment, the effects of treatments on biochemical parameters, FAs profiles and involved gene expression were analyzed. Our results revealed that EYHDL markedly suppressed the body weight gain, accumulation of abdominal fat tissues, serum concentrations of LDL-cholesterol (LDL-C) and triglycerides, hepatic triglycerides and cholesterol accumulation, while increased serum concentration of HDL-cholesterol (HDL-C). EYHDL intake also increased total cholesterol (TC) excretions compared with HFD group. Moreover, it alleviated the severity of fatty liver and improved glucose and insulin tolerance compared with HFD. More importantly, EYHDL partially normalized FAs profiles in serum, liver and fecaces and neutralized the HFD-induced upregulation of SREBP-1c, Acaca, Fasn, GPAT and Scd1. In conclusion, our findings indicate that EYHDL may have the potential to improve metabolic disturbances that occur in HFD mice and can be considered as an appropriate dietary recommendation for the treatment of metabolic syndrome (MetS).

      • KCI등재

        Comparison of long-term effects of egg yolk consumption under normal and high fat diet on lipid metabolism and fatty acids profile in mice

        Zhihui Yu,Ning Wang,Gan Hu,Meihu Ma 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.4

        This study compared the long-term effects of EYconsumption under two diet conditions: normal (ND ?EY) and high fat diet (HFD ? EY), on lipid metabolism inmice. ND ? EY did not increase serum triglycerides, totalcholesterol hepatic triglyceride concentrations, adiposetissue accumulation and glucose impairment, not leading tofatty liver. HFD ? EY markedly decreased adipose tissueaccumulation, the triglyceride and total cholesterol, andimproved serum HDL-C and blood glucose impairmentcompared with HFD. PLS-DA analyzes showed bothND ? EY and HFD ? EY could decrease serum C18:1and MUFA. HFD ? EY could further decrease hepaticC18:2 and PUFA and increase C18:1 and MUFA excretion,which were associated with lower expression of Elovl6 andhigher expression of Scd1 in liver. These results suggestthat HFD ? EY significantly improved dyslipidemiacaused by HFD through modifying lipid metabolism, andND ? EY did not adversely affect the biomarkersassociated with dyslipidemia risk, but showed less obviousregulation of lipid metabolism than HFD ? EY.

      • KCI등재

        Voltammetric Sensor for Sudan I Based on Glassy Carbon Electrode Modified by SWCNT/β-Cyclodextrin Conjugate

        Yu Cao,Zhihui Fang,Duanguang Yang,Yong Gao,Huaming Li 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2015 NANO Vol.10 No.2

        We reported a sensitive voltammetric sensor for Sudan I determination by modifying glassy carbon electrode (GCE) with single-walled carbon nanotubes (SWCNTs)/β-cyclodextrin conjugate. The cyclic voltammetry results showed that the modified GCE exhibited strong catalytic activity toward the electro-reduction of Sudan I with a well-defined cyclic voltammetric peak at -673 mV. Differential pulse voltammetry measurement showed that the response current exhibited a linear range between 50 nM and 5 µM, and the detection limit was as low as 2.22 nM (S/N=3). The enhanced electrochemical performance of the fabricated sensor was attributed to the combination of the excellent electrocatalytic properties of SWCNTs and the molecular recognition ability of β-cyclodextrin to Sudan I. The sensor was successfully applied to determine Sudan I in real food samples with satisfactory results.

      • KCI등재

        Microstructure Evolution of High-Alloyed Al–Zn–Mg–Cu–Zr Alloy Containing Trace Amount of Sc During Homogenization

        Yu Wang,Zhihui Li,Baiqing Xiong,Kai Wen,Shuhui Huang,Xiwu Li,Yongan Zhang 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.3

        Microstructure evolution of a new high-alloyed Al–Zn–Mg–Cu–Zr–Sc aluminium alloy during two-stage homogenizationprocess was investigated by use of scanning electron microscope, transition electron microscope and high resolution transitionelectron microscope. The results indicate that the morphology and chemical composition of Al 3 (Sc, Zr) particles formedin the fi rst stage were greatly aff ected by heating temperature. With the increase of heating temperature, the morphologyof Al 3 (Sc, Zr) particles transform from cuboidal with evident faceting to spheroidal due to improved Zr diff usivity. MoreZr atoms enrich in the interface of precipitate/matrix forming a thin layer. Moreover, the mean diameter of precipitatesincreases a little bit with the increase of heating temperature, showing very restricted coarsening rate and high thermal stabilityof Al 3 (Sc, Zr) particles. After an appropriate second stage heat treatment (474 °C × 48 h), the intermetallic formed inthe solidifi cation process could dissolve suffi ciently and Al 3 (Sc, Zr) particles still keep very good coherency with Al matrixwithout abnormal growth.

      • KCI등재

        Key Technologies of Supercapacitor Energy Storage System of IP Transmitter

        Zhihui Zeng,Xiaowei Wang,Yanfang Wei,Zhiguo Hu,Yangxiao Yu,Zhigang Zhang 전력전자학회 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.1

        A practical application of a supercapacitor energy storage system in a polarization instrument is proposed on the basis of theenergy storage requirements of an induced polarization (IP) transmitter for geophysical exploration. We focused on the energystorage system of a supercapacitor, the topology of the power converter, and the system control strategy as key technologies, andwe performed theoretical research and experimental tests on the system and developed an experimental platform. Theexperiments validated the theoretical research on the key technologies of the supercapacitor energy storage system anddemonstrated the effectiveness of the innovation. Results showed that the storage system is efficient and satisfies the energystorage needs of the IP transmitter.

      • KCI등재

        Finger Vein Recognition Using Generalized Local Line Binary Pattern

        ( Yu Lu ),( Sook Yoon ),( Shan Juan Xie ),( Jucheng Yang ),( Zhihui Wang ),( Dong Sun Park ) 한국인터넷정보학회 2014 KSII Transactions on Internet and Information Syst Vol.8 No.5

        Finger vein images contain rich oriented features. Local line binary pattern (LLBP) is a good oriented feature representation method extended from local binary pattern (LBP), but it is limited in that it can only extract horizontal and vertical line patterns, so effective information in an image may not be exploited and fully utilized. In this paper, an orientation-selectable LLBP method, called generalized local line binary pattern (GLLBP), is proposed for finger vein recognition. GLLBP extends LLBP for line pattern extraction into any orientation. To effectually improve the matching accuracy, the soft power metric is employed to calculate the matching score. Furthermore, to fully utilize the oriented features in an image, the matching scores from the line patterns with the best discriminative ability are fused using the Hamacher rule to achieve the final matching score for the last recognition. Experimental results on our database, MMCBNU_6000, show that the proposed method performs much better than state-of-the-art algorithms that use the oriented features and local features, such as LBP, LLBP, Gabor filter, steerable filter and local direction code (LDC).

      • KCI등재

        Optimal Control Strategies for a Supply Chain System With Delay and Reference Price Effects

        Zhihui Wu,Guo-Ping Liu,Jun Hu,Hui Yu,Dongyan Chen 제어·로봇·시스템학회 2024 International Journal of Control, Automation, and Vol.22 No.9

        This paper mainly discusses the impacts from the time delay of advertising and the reference price of consumer onto the cooperative advertising decisions. In our model, both the retailer’s platform goodwill (RPG) and the manufacturer’s brand goodwill (MBG) involved with their own advertising efforts are modeled by the delay differential equations. In addition, the RPG and the MBG have positive effects on the consumer’s reference price. The equilibrium advertising strategies of two channel members are firstly derived within the centralized and decentralized scenarios by resorting to the optimal control theory. Besides, the corresponding equilibrium advertising strategies and optimal channel profits are compared, which shows that the centralization brings higher profit to whole channel only when the time delays locate within a specified geometric region and the existence of time delay caused by manufacturer’s advertising also implies smaller advertising participation rate provided by the retailer. Subsequently, a new mechanism is designed to coordinate the supply chain system in the decentralized case under the consignment mode. Finally, a numerical example is employed to illustrate the impacts from key system parameters onto the coordination results when the supply chain is coordinated.

      • KCI등재

        Cooperative Work of CRTS II Slab Ballastless Track-32m Simply Supported Girder under Pier Settlement

        Zhihui Zheng,Peng Liu,Lei Liu,Zhiwu Yu,Wei Zhu,Sasa He 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.2

        Compared with the previous model, a simplified mapping model of CRTS II slab ballastless track between pier settlement and the vertical deformation of rail was proposed based on Timoshenko’s beam theory. A cooperative finite element analysis model was established for verification purpose and the analysis of interlaminar stress. The results showed that the emergence of pier settlement causes the appearance of the void of the sliding layer between the base plate and the box girder above the piers, and the shear cogging reduces the void length to a certain extent. It was also observed that the rail is deformed cambered at the side pier (the pier with no settlement on both sides of the middle pier) and downwards at the middle pier (the pier with settlement). Moreover, the comparison between the theoretical value of the rail deformation and the finite element result demonstrated that the proposed mapping model can precisely characterize the relevant relationship. A conclusion also can be drawn that the pier settlement is attributed to the additional stress on the interface between the track slab and cement and asphalt mortar (CA mortar), and the interfacial stress is increased due to the effect of shear cogging.

      • A High Accuracy Pedestrian Detection System Combining a Cascade AdaBoost Detector and Random Vector Functional-Link Net

        Wang, Zhihui,Yoon, Sook,Xie, Shan Juan,Lu, Yu,Park, Dong Sun Hindawi Publishing Corporation 2014 The Scientific World Journal Vol.2014 No.-

        <P>In pedestrian detection methods, their high accuracy detection rates are always obtained at the cost of a large amount of false pedestrians. In order to overcome this problem, the authors propose an accurate pedestrian detection system based on two machine learning methods: cascade AdaBoost detector and random vector functional-link net. During the offline training phase, the parameters of a cascade AdaBoost detector and random vector functional-link net are trained by standard dataset. These candidates, extracted by the strategy of a multiscale sliding window, are normalized to be standard scale and verified by the cascade AdaBoost detector and random vector functional-link net on the online phase. Only those candidates with high confidence can pass the validation. The proposed system is more accurate than other single machine learning algorithms with fewer false pedestrians, which has been confirmed in simulation experiment on four datasets.</P>

      • SCIESCOPUSKCI등재

        Key Technologies of Supercapacitor Energy Storage System of IP Transmitter

        Zeng, Zhihui,Wang, Xiaowei,Wei, Yanfang,Hu, Zhiguo,Yu, Yangxiao,Zhang, Zhigang The Korean Institute of Power Electronics 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.1

        A practical application of a supercapacitor energy storage system in a polarization instrument is proposed on the basis of the energy storage requirements of an induced polarization (IP) transmitter for geophysical exploration. We focused on the energy storage system of a supercapacitor, the topology of the power converter, and the system control strategy as key technologies, and we performed theoretical research and experimental tests on the system and developed an experimental platform. The experiments validated the theoretical research on the key technologies of the supercapacitor energy storage system and demonstrated the effectiveness of the innovation. Results showed that the storage system is efficient and satisfies the energy storage needs of the IP transmitter.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼