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RISS 인기검색어
- 검색키워드
- 저자 : Keying Chen (검색결과 4 건)
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Juan Chen,Keying Chen,Liangcai Zeng,Wenting Guo 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.22 No.12
In this paper, a numerical model of elastohydrodynamic lubrication (EHL) in the line contact which happens on the surface of particle-reinforced composites is given. The influence of the particle size and burial depth on the EHL is studied. According to the influence of the structural parameters on the friction coefficient of the EHL contact, the structural parameters of the particles in the composites are optimized and the proper region of the parameters is obtained. The displacement and stress in elastic field caused by the uniform eigenstrains in the particles are described in terms of Galerkin vectors with the interactions between the particles are ignored. A coupling method of particle reinforced composites problem and EHL problem is presented, a new film thickness function is given considered the uneven elastic deformation caused by the presence of the particles. Finally, the presentation of film thickness and fluid pressure of the EHL explains that appropriate particle size, particle burial depth and particle distance can effectively reduce the friction coefficient. The lubrication behavior between the contacted surfaces can be improved under the heavy load.
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Neural correlates of the popular music phenomenon: evidence from functional MRI and PET imaging
Chen, Qiaozhen,Zhang, Ying,Hou, Haifeng,Du, Fenglei,Wu, Shuang,Chen, Lin,Shen, Yehua,Chao, Fangfang,Chung, June-key,Zhang, Hong,Tian, Mei Springer-Verlag 2017 European journal of nuclear medicine and molecular Vol.44 No.6
<P>Popular music Gangnam Style can arouse pleasure experience and strong emotional response. The left putamen is positively correlated with the mood arousal level score under the Gangnam Style condition. Our results revealed characteristic patterns of brain activity associated with Gangnam Style, and may also provide more general insights into the music-induced emotional processing.</P>
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Fangqing Li,Lin Chen,Yufei Wei,Zhiwei Yin,Keying Que 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.123 No.-
Membrane distillation (MD) is considered an emerging desalination technology. However, the presenceof surfactants allows liquid to penetrate the membrane, resulting in membrane wetting, which hindersthe commercialization of MD. In this study, we use very few modified materials to prepare novel Janusthin membranes that immobilize modified materials (graphene oxide (GO) and UiO-66-NH2) on polytetrafluoroethylene(PTFE) hydrophobic base membranes via crosslinkers. The composite thin membraneproperties with eight different ratios and contents of GO and UiO-66-NH2 were fabricated and testedby a feed solution of sodium chloride containing a high concentration of sodium dodecyl sulfate. An optimalratio of Janus membrane with high flux without affecting the effluent water quality was obtained. The Janus membrane exhibited excellent anti-wetting properties compared to the original PTFE membrane. A desalination rate of up to 99.9% was still available even under 48 h of long-term operating conditionsby maintaining a flux of approximately 21.2 L/(m2h). The anti-wetting mechanism of thismembrane was further confirmed by the modified XDLVO model. It suggested that the novel Janus membranecould be a highly promising substitute to the MD process for the resource-based treatment ofsurfactant-containing wastewater, which played an important role in promoting its application.
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Paradigm of Time-sequence Development of the Intestine of Suckling Piglets with Microarray
Sun, Yunzi,Yu, Bing,Zhang, Keying,Chen, Xijian,Chen, Daiwen Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.10
The interaction of the genes involved in intestinal development is the molecular basis of the regulatory mechanisms of intestinal development. The objective of this study was to identify the significant pathways and key genes that regulate intestinal development in Landrace piglets, and elucidate their rules of operation. The differential expression of genes related to intestinal development during suckling time was investigated using a porcine genome array. Time sequence profiles were analyzed for the differentially expressed genes to obtain significant expression profiles. Subsequently, the most significant profiles were assayed using Gene Ontology categories, pathway analysis, network analysis, and analysis of gene co-expression to unveil the main biological processes, the significant pathways, and the effective genes, respectively. In addition, quantitative real-time PCR was carried out to verify the reliability of the results of the analysis of the array. The results showed that more than 8000 differential expression transcripts were identified using microarray technology. Among the 30 significant obtained model profiles, profiles 66 and 13 were the most significant. Analysis of profiles 66 and 13 indicated that they were mainly involved in immunity, metabolism, and cell division or proliferation. Among the most effective genes in these two profiles, CN161469, which is similar to methylcrotonoyl-Coenzyme A carboxylase 2 (beta), and U89949.1, which encodes a folate binding protein, had a crucial influence on the co-expression network.
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