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Study on the Thermal Decomposition of Waste Polystyrene in Motor Oil Using Microwave Energy
Liu, Xiao Yun,Kang, Tae Won 公州大學校 工學硏究院 生産技術硏究所 2003 論文集 Vol.11 No.-
A novel microwave-induced pyrolysis of waste polystyrene in motor oil was performed in quartz tube reactor. Different pyrolysis conditions were investigated, such as time range from 30 minutes to 1 hour and effective microwave power range from 180 to 250 watt. The distillate components were analyzed with GC-MS, and styrene, 1-methyl styrene, toluene, ethyl benzene were the four main products. Among these distillate products, styrene took over 70 percentages. Temperature of pyrolysis suing microwave was much lower than that of conventional thermal pyrolysis method.
基於CiteSpace視角的漢語四字格成語 曆時研究可視化圖譜分析及研究展望 ― 以1979年-2021年爲中心
劉柳(Liu Liu),劉耘(Liu Yun) 중국어문학연구회 2022 중국어문학논집 Vol.- No.134
The idiom, which is short but powerful, is a set phrase accepted through common practices for a long period of time. The idiom has various forms, and are mainly of four-character structure. Aiming at important issues about the diachronic situation, current hot spots and future trend of four-character idiom research, etc., this paper sorts out the relevant literature published in CNKI from 1979 to 2021, and utilizes CiteSpace to develop the author collaboration network, research institution cooperation network, keyword co-appearance network, clustering map and other visualized knowledge maps in respect to diachronic research situation of four-character idioms. Then, those visualized knowledge maps are quantitatively analyzed to obtain their development trend that rises steadily as a whole. After analysis of current research hot spots, it’s found that the academic circles are currently focusing on researches about ontology and translation of the Chinese. Based on the analysis results, this paper makes a scientific prediction for future idiom development, and deduces that the idioms will evolve towards the direction of construction grammar, cognitive science, etc., in the future.
The Structural Design of Tianjin Goldin Finance 117 Tower
Liu, Peng,Ho, Goman,Lee, Alexis,Yin, Chao,Lee, Kevin,Liu, Guang-lei,Huang, Xiao-yun Council on Tall Building and Urban Habitat Korea 2012 International journal of high-rise buildings Vol.1 No.4
Tianjin Goldin Finance 117 tower has an architectural height of 597 m, total of 117 stories, and the coronation of having the highest structural roof of all the buildings under construction in China. Structural height-width ratio is approximately 9.5, exceeding the existing regulation code significantly. In order to satisfy earthquake and wind-resisting requirements, a structure consisting of a perimeter frame composed of mega composite columns, mega braces and transfer trusses and reinforced concrete core containing composite steel plate wall is adopted. Complemented by some of the new requirements from the latest Chinese building seismic design codes, design of the super high-rise building in high-intensity seismic area exhibits a number of new features and solutions to professional requirements in response spectrum selection, overall stiffness control, material and component type selection, seismic performance based design, mega-column design, anti-collapse and stability analysis as well as elastic-plastic time-history analysis. Furthermore, under the prerequisite of economic viability and a series of technical requirements prescribed by the expert review panel for high-rise buildings exceeding code limits, the design manages to overcome various structural challenges and realizes the intentions of the architect and the client.
Regressopn Analysis of Customer Perception on Automobilie Consumption Decison Making Model
Yun Liu,Wenjing,Ruixiz Gao,Zhiqiang Luan 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10
With China’s economic development, the automobile market gradually moves towards a mature and highly competitive situation; therefore, business must turn to customer approach rather than product approach. Accordingly it is very necessary to study the customer perceptions in the decision-making process, which can help manufactures and dealers to meet the needs of target market with more suitable strategies and effective services. In this paper, the study use automobile Consumption Decision Model as basic study structure, also contacts Chinese customer psychology characteristics to conduct the regression analysis of customer perception. At last, this paper provides certain advices and guidance about guidance about risk management and data mining by analyzing customer perception
MicroRNA Expression Profile Analysis Reveals Diagnostic Biomarker for Human Prostate Cancer
Liu, Dong-Fu,Wu, Ji-Tao,Wang, Jian-Ming,Liu, Qing-Zuo,Gao, Zhen-Li,Liu, Yun-Xiang Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.7
Prostate cancer is a highly prevalent disease in older men of the western world. MicroRNAs (miRNAs) are small RNA molecules that regulate gene expression via posttranscriptional inhibition of protein synthesis. To identify the diagnostic potential of miRNAs in prostate cancer, we downloaded the miRNA expression profile of prostate cancer from the GEO database and analysed the differentially expressed miRNAs (DE-miRNAs) in prostate cancerous tissue compared to non-cancerous tissue. Then, the targets of these DE-miRNAs were extracted from the database and mapped to the STRING and KEGG databases for network construction and pathway enrichment analysis. We identified a total of 16 miRNAs that showed a significant differential expression in cancer samples. A total of 9 target genes corresponding to 3 DE-miRNAs were obtained. After network and pathway enrichment analysis, we finally demonstrated that miR-20 appears to play an important role in the regulation of prostate cancer onset. MiR-20 as single biomarker or in combination could be useful in the diagnosis of prostate cancer. We anticipate our study could provide the groundwork for further experiments.
Negative Corona Onset Characteristic of the UHV Conductors Based on the Corona Cage
Liu, Yun-Peng,Zhu, Lei,Lv, Fang-Cheng,Xie, Xiongjie The Korean Institute of Electrical Engineers 2014 Journal of Electrical Engineering & Technology Vol.9 No.6
Negative corona onset characteristics of the stranded conductors based on the ultra-high voltage (UHV) corona cage were studied in the paper. Based on the corona self-sustaining criterion in extreme uneven electric fields and the secondary emission process of the photoelectrons, the corona onset calculation model in the UHV corona cage is established and the corona current tests of the single LGJ900-75, 6 bundle LGJ900-75, 8 bundle LGJ400-35 conductors in dry and rain conditions were done in the UHV corona cage, and the rain rates are 2.4 mm/h, 20 mm/h and 30 mm/h. Corona onset electric field strength is gained by E-I tangent method, and the onset electric field strength in dry condition proves that the calculation model can be used to calculate the corona onset characteristics of the bundle conductors in the UHV corona cage. A further analysis proves that: the negative corona onset voltage of the conductor increases with the bundle number and the diameter of the sub conductor, but decreases with the bundle space in the corona cage. The onset electric field strength is influenced little by bundle space and bundle number, but decreases with the increase of the diameter of the sub-conductor. The surface irregularity coefficient decreases with the rain rate.
Yun-Peng Liu 한양대학교 세라믹연구소 2012 Journal of Ceramic Processing Research Vol.13 No.S1
Electric field distribution is one of the important factors which impact the aging of composite insulators. The electric field of composite insulators was simulated by ANSYS software, and the shed samples in different parts of the composite insulator were analyzed by Fourier transform infrared spectroscopy (FTIR). The characteristic peaks of functional groups in the main chain and side chain of composite insulator material molecular formula were compared. The smaller the characteristic peak area is, the less the corresponding functional group is, that means the facture condition of main chain or side chain is more serious. In this way, the characteristic peaks of samples in different electric field distribution were compared, and the influence of electric field distribution to the aging effect of the composite insulators is gained. The results show that electric field strength is the strongest in the composite insulator high-voltage side, followed by lowvoltage side, and the electric field in the middle of the composite insulator is the lowest. Accordingly, the aging degree in the composite insulator high-voltage side is the most serious, followed by low-voltage side, and the aging degree is weakest in the middle part.
Liu, Yun-Fu,Zhang, Gong-Wei,Xiao, Zheng-Long,Yang, Yu,Deng, Xiao-Song,Chen, Shi-Yi,Wang, Jie,Lai, Song-Jia Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.8
The NLRP12 (NLR family, pyrin domain containing 12) serves as a suppressor factor in the inflammatory response and protects the host against inflammation-induced damage. In the present study, we aimed to study the polymorphisms of NLRP12 gene and its association with susceptibility to non-specific digestive disorder (NSDD) in rabbits. We re-sequenced the entire coding region of the rabbit NLRP12 gene and detected a total of 19 SNPs containing 14 synonymous and five non-synonymous variations. Among them, the coding SNP (c.1682A>G), which would carry a potential functional implication, was subsequently subjected to genotyping for case-control association study (272 cases and 267 controls). The results revealed that allele A was significantly protective against NSDD with an odds ratio value of 0.884 (95% confidence interval, 0.788 to 0.993; p = 0.038). We also experimentally induced NSDD in growing rabbits by feeding a fibre-deficient diet and subsequently investigated NLRP12 mRNA expression. The mRNA expression of NLRP12 in healthy status was significantly higher than that in severe NSDD (p = 0.0016). The highest expression was observed in individuals carrying the protective genotype AA (p = 0.0108). These results suggested that NLRP12 was significantly associated with the NSDD in rabbits. However, the precise molecular mechanism of NLRP12 involving in the development of rabbit NSDD requires further research.