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A phosphorene–graphene hybrid material as a high-capacity anode for sodium-ion batteries
Sun, Jie,Lee, Hyun-Wook,Pasta, Mauro,Yuan, Hongtao,Zheng, Guangyuan,Sun, Yongming,Li, Yuzhang,Cui, Yi Nature Publishing Group 2015 Nature nanotechnology Vol.10 No.11
Sodium-ion batteries have recently attracted significant attention as an alternative to lithium-ion batteries because sodium sources do not present the geopolitical issues that lithium sources might. Although recent reports on cathode materials for sodium-ion batteries have demonstrated performances comparable to their lithium-ion counterparts, the major scientific challenge for a competitive sodium-ion battery technology is to develop viable anode materials. Here we show that a hybrid material made out of a few phosphorene layers sandwiched between graphene layers shows a specific capacity of 2,440 mA h g<SUP>−1</SUP> (calculated using the mass of phosphorus only) at a current density of 0.05 A g<SUP>−1</SUP> and an 83% capacity retention after 100 cycles while operating between 0 and 1.5 V. Using in situ transmission electron microscopy and ex situ X-ray diffraction techniques, we explain the large capacity of our anode through a dual mechanism of intercalation of sodium ions along the x axis of the phosphorene layers followed by the formation of a Na<SUB>3</SUB>P alloy. The presence of graphene layers in the hybrid material works as a mechanical backbone and an electrical highway, ensuring that a suitable elastic buffer space accommodates the anisotropic expansion of phosphorene layers along the y and z axial directions for stable cycling operation.
{Poster Presentation} P45 : Outbreaks of Chicken Hydropericardium-Hepatitis Syndrome in Korea
( Sun Hee Do ),( Jeong Won Sun ),( Ki Seok Kim ),( Won Ll Jeong ),( Da Hee Jeong ),( Hai Jie Yang ),( Dong Wei Yuan ),( Ll Hwa Hong ),( Woo Suk Kim ),( Hyun Yi ),( Jae Chung Jo ),( Mi Ran Ki ),( Tae H 한국수의병리학회 2005 한국수의병리학회 국제심포지움자료집 Vol.2005 No.-
Action Recognition Method in Sports Video Shear Based on Fish Swarm Algorithm
Jie Sun,Lin Lu 한국정보처리학회 2023 Journal of information processing systems Vol.19 No.4
This research offers a sports video action recognition approach based on the fish swarm algorithm in light ofthe low accuracy of existing sports video action recognition methods. A modified fish swarm algorithm isproposed to construct invariant features and decrease the dimension of features. Based on this algorithm, localfeatures and global features can be classified. The experimental findings on the typical sports action data setdemonstrate that the key details of sports action can be successfully retained by the dimensionality-reducedfusion invariant characteristics. According to this research, the average recognition time of the proposed methodfor walking, running, squatting, sitting, and bending is less than 326 seconds, and the average recognition rateis higher than 94%. This proves that this method can significantly improve the performance and efficiency ofonline sports video motion recognition.
An oil-tolerant and salt-resistant aqueous foam system for heavy oil transportation
Jie Sun,Jiaqiang Jing,Neima Brauner,Li Han,Amos Ullmann 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.68 No.-
An oil-tolerant and salt-resistant aqueous foam system was screened out as a possible lubricant to enable cold heavy oil transportation. The microstructures and viscoelasticity and effects of heavy oil, salt and temperature on the foam stability were investigated and new rheological and drainage models were established. The results indicate the foam with multilayered shells belongs to a special microcellular foam. The viscoelasticity could be neglected due to its low relaxation time. The drainage process can be divided into three stages. The foam with quality of 67.9% maintains great stability at high oil and salt concentrations and appropriate elevated temperature.
Pipeline transport of heavy crudes as stable foamy oil
Jie Sun,Jiaqiang Jing,Cheng Wu,Fei Xiao,Xiaoxuan Luo 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.44 No.-
A new idea was proposed to transport heavy crudes as foamy oil at normal temperature. The effects offoaming agent type and concentration, foam stabilizer type and concentration, oil–water volume ratioand temperature on the formation and stability of foamy oil were evaluated. The foamy oil properties anddrag characteristics of foamy oilflow in small diameter pipes were investigated. The results indicate thatthe prepared stable foamy oil could be characterized as non-Newtonian power lawfluid. The predictedpressure drops were in good agreement with the measured ones. The significant dynamic viscosityreduction rates were obtained.
Jie-YunPark,Sue-NiePark,Chul-JoongKim,HaryoungPoo,Hyun-MiPyo,Sun-WooYoon,Sun-YoungBaek 한국미생물학회 2002 The journal of microbiology Vol.40 No.4
To perform the prophylactic study of a vaccine derived from human papillomavirus (HPV) using Balb/c mice, we produced virus like particles consisting of HPV capsid protein L1 which has been reported to induce significant humoral and cellular immunity using various animal model systems. In order to produce HPV16 VLPs, the cDNA of L1 capsid protein in HPV type 16, obtained by polymerase chain reaction, was inserted into yeast expression vector, YEGa-HIR525 under the control of GAL10 promoter. The transformation of YEGa-HPV16 L1 was performed into the yeast Saccharomyces cerevisiae Y2805 by the lithium acetate method and the yeast clone expressing the highest level of L1 capsid protein of human papillomavirus type 16 was selected by Western blot analysis using anti-HPV16 L1 antibody. The purification of HPV16 VLP has been performed by the ultracentrifugation and gel-filtration methods. To validate the vaccine efficacy of the purified HPV16 VLPs and investigate the properties of HPV16 VLPs to induce humoral immunity, ELISA assay was performed. A significantly increased production of anti-HPV16 VLP antibodies was observed in sera from immunized mice. The neutralization activity of antibodies in the sera from the vaccinated mice was demonstrated by a rapid and simple assay to detect hemagglutihation inhibition activity.
Sun, Chang-Qing,Chang, Yu-Bo,Cui, Ling-Ling,Chen, Jia-Jun,Sun, Nan,Zhang, Wei-Jie,Jia, Xiao-Can,Tian, Yuan,Dai, Li-Ping Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.5
Gastric cancer is the second most common cause of cancer-related deaths in the world. Although certain dietary factors and lifestyles have been suggested to be associated with gastric carcinogenesis, there have been few investigations focusing on rural areas. A case-control study was therefore carried out to investigate the risk factors of gastric cardia cancer (GCC) in rural areas of Linzhou. A total of 470 newly diagnosed cases of GCC and 470 healthy controls were included. Face-to-face interviews were conducted, using a uniform questionnaire containing questions on demographics, per capita income, living habits, dietary habits and family history of tumors. The relationship between putative risk factors and GCC was assessed by odds ratios (OR) and their 95% confidence intervals (95%CI) derived from conditional logistic regression model by the COXREG command using SPSS 12.00. Multivariate logistic regression analysis was used to evaluate simultaneously the effects of multiple factors and other potential confounding factors. Multivariate logistic analysis showed that smoking (OR=1.939, 95%CI:1.097-3.426), alcohol drinking (OR=2.360, 95%CI: 1.292-4.311), hot food consumption (OR=2.034, 95%CI: 1.507-2.745), fast eating (OR=1.616, 95%CI: 1.171-2.230), mouldy food (OR=4.564, 95%CI: 2.682-7.767), leftover food (OR=1.881. 95%CI: 1.324-2.671), and family history of tumor (OR=2.831, 95%CI: 1.588-5.050) were risk factors for GCC. High per capita income (OR=0.709, 95%CI: 0.533-0.942), high education level (OR=0.354, 95%CI: 0.163-0.765), consumption of fresh fruits (OR=0.186, 95%CI: 0.111-0.311) and vegetables (OR=0.243, 95%CI: 0.142-0.415), and high BMI (OR=0.367, 95%CI: 0.242-0.557) were protective factors for GCC. Our data indicate that unhealthy lifestyle and dietary habits might be important contributors to GCC in this population.
Study on the e-commerce logistics distribution modes of fresh agricultural products
Sun Jie 한국유통과학회 2013 한국유통과학회 학술대회 논문집 Vol.2013 No.-
In recent years, along with the rapid development of e-commerce, enterprises have paid more and more attention to the e-commerce of fresh agricultural products. The logistics distribution modes have always been the bottleneck factors that restrict the development of fresh agricultural products’ e-commerce. Based on the studying of traditional logistics distribution modes, this paper points out five problems of how to create the e-commerce logistics distribution system. This thesis analyses the e-commerce logistics distribution modes of fresh agricultural products and the business process; summarizes the advantages and problems of the e-commerce logistics distribution of fresh agricultural products; finally, puts forward reasonable suggestions for fresh agricultural products e-commerce logistics distribution mode.
Research on the Negative Influence of Mobile Social Network : A Case Study of Facebook
Jie Sun,Hanzhi Wang 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.2
Nowadays, the use of mobile social network has occupied a number of user's daily life. The production of social network makes the user's life richer, and dating is not limited by time and space at all. On the other side, as for the mobile social network, the negative influence result from many respects, including the users' reliance on the mobile social network, their satisfaction about the mobile social network, the users' credibility to the mobile social network, the risk of mobile social network safety and so on. This research investigated the users’ attitude and behavior of Facebook mobile; collected data by questionnaires, literature research and interviews; discussed the negative influence on the mobile social network; finally proposed suggestions for mobile social network. By the research, it focused on the issue of mobile social network’s negative impacts on people’s life and benefit to provide a reliable data and evidence to mobile social network, the conclusions also contribute to mobile social network study and practice in China.