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RISS 인기검색어
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- 저자 : Xuedong Liu (검색결과 6 건)
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Yanxia Chen,Xuedong Liu,Xiaoguang Yang,Yuhui Liu,Xiaomeng Pi,Qingzhen Liu,Dong Zheng 한국유전학회 2015 Genes & Genomics Vol.37 No.5
Deer antlers are the only mammalian appendages subject to an annual cycle of epimorphic regeneration. Within the rapid-growth stage, they display the fastest cartilage development in the animal kingdom. To identify microRNA (miRNA) profiling in red deer (Cervus elaphus) antler cartilage, we applied deep sequencing technology to a small RNA library constructed from pooled cartilage (three antlers from three individuals). We generated 9,520,645 mappable reads with a size distribution of between 15 and 30 nucleotides (miRNAs of 18 nucleotides were the most abundant group: 31 %). Bioinformatics data mining revealed 399 miRNAs in antler cartilage, of which 345 were highly conserved and expressed in 25 other mammals, including the cattle (Bos taurus) and in humans (Homo sapiens). The remaining 54 miRNAs we identified were novel and likely to be antler-cartilage specific, but were expressed at low levels. The identification of these known and newly identified miRNAs in antler cartilage significantly enhances our understanding of the miRNA profiling of regenerating antler cartilage. Further studies are necessary to better understand miRNAs-regulated antlerogenesis.
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Xuedong Gao,Lulu Liu,Qiyu Wang,Kun Qi,Zhao Jin,WEITAO ZHENG,XIAOQIANG CUI 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.2
Nanodendritic Pt-based bimetallic alloys are one promising catalyst with three-dimensional (3D) networks structure composed of integrating branches for electrochemical catalytic reaction. We successfully synthesized dendrites Pt6Ir4 alloy with small size of 20 nm in oleylamine. The dendritic Pt6Ir4 alloy are characterized by high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical tests suggest that the as-prepared dendritic Pt6Ir4 alloy exhibits greatly enhanced ethylene glycol oxidation reaction (EGOR) activity than commercial Pt/C with high EGOR mass activity, anti-poisoning and stability.
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Wei Li,Qian Liu,Guoyu Zhang,Xuedong Cheng,Yingfeng Wang,Zhenzhen Xu 한국섬유공학회 2022 Fibers and polymers Vol.23 No.8
This work aimed to evaluate the paste stability and desizability of new starch grafted copolymer [poly(sodium allylsulfonate)-g-starch-g-poly(ethyl acrylate)] (PSAS-g-starch-g-PEA) for providing an important supporting role in sizingapplication. The PSAS-g-starch-g-PEA samples were prepared by grafting reaction of acid-thinned starch (AHS) with SASand subsequent with EA in water phase. The PSAS-g-starch-g-PEA granules were characterized by Fourier transforminfrared spectroscopy and scanning electron microscopy. Also, paste stability was assessed and desizability was investigatedin terms of desizing efficiency, swelling ability of the film and time interval for the break of starch film in water. Comparedwith control AHS, the PSAS-g-starch-g-PEA had higher paste stability, desizing efficiency and swelling ability, and lowertime interval required, concluding that the PSAS and PEA branches could promote the paste stability and desizability ofstarch. Increasing the number of both branches facilitated the paste stability and desizability. PSAS-g-starch-g-PEA displayedpotential value in textile sizing field.
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Lingling Li,Zhenghai Liu,Jiaye Xu,Xuedong Ma 한국전기전자재료학회 2020 Transactions on Electrical and Electronic Material Vol.21 No.3
In order to enhance the segregation eff ect of material particles in a hemispherical shell swing-oscillating trough under combination swing-oscillating, by means of three dimensional discrete element method, and by use of the two-dimensional dry granules of plastic ball and steel ball, the discrete element simulation study of particle segregation process is carried out in turn in three cases, which is composed of a single swing-oscillating in smooth trough, a combination swing-oscillating in smooth trough, and a combination swing-oscillating in adding bulge trough. The particle segregation eff ect was evaluated by particle volume concentration and combined with segregation cloud picture simulated. The result indicates that segregation effect of combination swing-oscillating is better than that in single swing-oscillating; layering eff ect of the trough added bulge is better than that in the smooth trough. And compared to single swing-oscillating in smooth trough, the degree of segregation of particles in added bulge trough can be increased by 10–15% when being combination swing-oscillating.
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A Taxonomy of Agent Technologies for Ubiquitous Computing Environments
( Daqiang Zhang ),( Jiafu Wan ),( Qiang Liu ),( Xin Guan ),( Xuedong Liang ) 한국인터넷정보학회 2012 KSII Transactions on Internet and Information Syst Vol.6 No.2
The design, development and deployment of Mobile Agent (MA) systems for high-level inference and surveillance in wireless sensor networks and RFID systems have drawn increasing attention in the past decade. To answer how the state-of-the-art of MA in a wide range of ubiquitous and sensor environments is, this paper investigates the current progress of MA. It proposes a taxonomy, by which MA systems in ubiquitous computing environments are decomposed and discussed. Then, this paper provides insights into the strengths and weaknesses of existing efforts. Finally, it presents a series of solutions from the viewpoint of various roles of MA in ubiquitous environments and situations.
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Gaofeng Han,Jing Li,Shuo Wang,Yan Liu,Xuedong Wang,Yanheng Zhou 대한치과교정학회 2019 대한치과교정학회지 Vol.49 No.2
Objective: This study was performed to evaluate the accuracy and reliability of a newly designed method to achieve mandibular dental model superimposition, using voxel-based cone-beam computed tomography (CBCT) registration. Methods: Fourteen dry cadaveric mandibles and six teeth extracted from patients with severe periodontitis were used to establish 14 orthodontic toothmovement models. The protocol consisted of two steps: in the first step, voxel-based CBCT mandible superimposition was performed; the reference comprised the external portion of the symphysis, extending to the first molar. The laser-scanned dental model image was then integrated with the CBCT image to achieve mandibular dental model superimposition. The entire process required approximately 10 minutes. Six landmarks were assigned to the teeth to measure tooth displacement, using tooth displacement on the superimposed laser-scanned mandibles as the reference standard. Accuracy was evaluated by comparing differences in tooth displacement based on the method and the reference standard. Two observers performed superimposition to evaluate reliability. Results: For three-dimensional tooth displacements, the differences between the method and the reference standard were not significant in the molar, premolar, or incisor groups (p > 0.05). The intraclass correlation coefficients for the inter- and intra-observer reliabilities of all measurements were > 0.92. Conclusions: Our method of mandibular dental model superimposition based on voxel registration is accurate, reliable, and can be performed within a reasonable period of time in vitro, demonstrating a potential for use in orthodontic patients.
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