A Study on the Development of the Third Party Payment in Chinese Internet Finance

HUANG, Yanyan,KANG, Taewon,DUAN, Xianming 조선대학교 지식경영연구원 2014 기업과 혁신연구 Vol.7 No.3

The internet finance is the new ecological finance emerging in the internet era. Mainly based on the practices of technological companies including Alibaba, the connotation and denotation of Alibaba are constantly expanded. Especially, in recent years, the internet finance has achieved a great development. Being the key component of internet finance, the third party payment platform has been constantly expanding its transaction scale and promoted innovative businesses. Moreover, the third party payment causes the most influence on common people’s life among the internet financial innovation. As the representative of the third party payment platform, Yuebao, the innovative product of Alibaba’s Alipay, may deeply change the users’ paying and saving opinions. Thus, through the development situation and latest progress of the third party payment based on literature analysis method and data statistics method, it is known that the third party payment already occupies a dominant position in the E-payment field. In the following years, Chinese E-commerce market will develop faster with greater scale. Furthermore, as to the strong practice feature in the internet industry, the paper analyzes the Alibaba’s operation mechanism and feature based on Alipay’s practices. In addition, the reason for Alipay’s success is analyzed by marketing analysis method (4C Theory) and information technology knowledge (analysis on mobile payment and cloud computing). On this base, the specific countermeasures and suggestions are proposed. Meanwhile, the basic competitive situation is analyzed by Porter’s Five Forces Model and the path for the future development of the third party payment is proposed.

Detection of duck hepatitis virus serotype1 by biosensor based on imaging ellipsometry

Chenghong Huang,Jixiang Li,Yu Tang,Yanyan Chen,Gang Jin 한국물리학회 2011 Current Applied Physics Vol.11 No.3

A novel method for the detection of duck hepatitis virus serotype1 (DHV1) using a biosensor based on imaging ellipsometry (IE) is developed. Polyclonal antibodies against DHV1 were immobilized on silicon wafers through protein A and used to capture virus particles in sample. Signals on silicon surface were acquired directly in grayscale format on an imaging ellipsometry image. This study demonstrated that the assay is rapid and accurate for detection of duck hepatitis virus. Compared with traditional methods,this technique not only has high sensitivity as low as 8 × 10^-9.5 LD_50/ml, but can also simultaneously perform multiple serotype identification of DHV1, DHV1-g and DHV1-s. These results suggest that this biosensor might be a practicable diagnostic tool for duck hepatitis virus detection.

The study of blood transcriptome profiles in Holstein cows with miscarriage during peri-implantation

Guoli Zhao,Yanyan Li,Xiaolong Kang,Liang Huang,Peng Li,Jinghang Zhou,Yuangang Shi 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.1

Objective: In this study, the transcriptome profile of cow experiencing miscarriage during peri-implantation was investigated. Methods: Total transcriptomes were checked by RNA sequencing, and the analyzed by bioinformatics methods, the differentially expressed genes (DEGs) were analysed with hierarchical clustering and Kyoto encyclopedia of genes and genomes (KEGG) pathway analysis. Results: The results suggested that serum progesterone levels were significantly decreased in cows that miscarried as compared to the pregnant cows at 18, 21, 33, 39, and 51 days after artificial insemination. The RNA sequencing results suggested that 32, 176, 5, 10, and 2 DEGs were identified in the pregnant cows and miscarried cows at 18, 21, 33, 39, and 51 d after artificial insemination. And 15, 101, 1, 2, and 2 DEGs were upregulated, and 17, 74, 4, and 8 DEGs were downregulated in the cows in the pregnant and miscarriage groups, respectively at 18, 21, 33, and 39, but no gene was downregulated at 51 d after artificial insemination. These DEGs were distributed to 13, 20, 3, 6, and 20 pathways, and some pathway essential for pregnancy, such as cell adhesion molecules, tumor necrosis factor signaling pathway and PI3K-Akt signaling pathway. Conclusion: This analysis has identified several genes and related pathways crucial for pregnancy and miscarriage in cows, as well as these genes supply molecular markers to predict the miscarriage in cows.

DC Voltage Balancing and Current Sharing Control of Parallel Multiple Modules Static Var Generator Based on CPS-SPWM

Cai, Wei,Huang, Yanyan,Fangyuan, Zhou,Qiu, Wenjun,Wang, Caixiao,Wu, Qiang,Erlei, Shi,Wen, Tao The Korean Institute of Electrical Engineers 2013 The Journal of International Council on Electrical Vol.3 No.1

For extending the power and improving the performance of SVG, a topology with several parallel plugging convertor modules is obtained, which has no common DC bus. In respect that the parameter difference among converters, reactive power of total output sharing has to be resolved. In this article, mathematics model with DQ analytic transformation is analyzed. Based on double close-loop decoupling control, and direct current control, a reactive power balance current sharing method is proposed. By using CPS-SPWM, the current harmonic of SVG is reduced, which is indicated by simulation result. Further, in order to apply the method to project application, a 2Mvar platform with a double FPGA-DSP controller broad is carried out. The simulation and practical performance of SVG are given. The validity and feasibility of the method is demonstrated by the results.

Characterization of a Family 3 Polysaccharide Lyase with Broad Temperature Adaptability, Thermo-alkali Stability, and Ethanol Tolerance

JunPei Zhou,Yanyan Dong,Yajie Gao,Xianghua Tang,Junjun Li,YUN-JUAN YANG,Bo Xu,Zhenrong Xie,Zunxi Huang 한국생물공학회 2012 Biotechnology and Bioprocess Engineering Vol.17 No.4

The 774-bp pectate lyase gene plyAI4 from Bacillus sp. I4 was cloned and expressed in E. coli. The gene encodes a 257-residue polypeptide (PlyAI4, 28.3 kDa)with the highest identities of 97.3% with a putative pectate lyase from Bacillus subtilis BSn5 (ADV94306) and 60.3%with an identified pectate lyase of the polysaccharide lyase family (PL) 3 from Paenibacillus amylolyticus 27C64(ADB78774). The purified recombinant PlyAI4 (rPlyAI4)exhibited apparently optimal activity at pH 10.5 ~ 11.0 and 50oC. Compared with the majority of reported alkaline pectate lyases, rPlyAI4 exhibited more residual enzyme activity at 20oC (~45%) or at 70oC (~50%) and better thermostability at 70oC (~60 min half-life at 70oC). In the presence of 20% (v/v) ethanol, pectate lyase activity was enhanced by 0.2 fold. After incubation in 40% (v/v)ethanol at 37oC and pH 8.5 for 1 h, the purified rPelAI4retained more than 75% of the initial activity. Sequence analysis proposed a new signature block, A-D-G-[V/I]-H,for PL 3 pectate lyases. These properties may prove to be important with regards to PlyAI4 for basic research and industrial application.

Comprehensive Utilisation of Biomass Tar for High Volumetric Capacitance Porous Carbon and Modified Bio-resin

Sui Guanghui,Cheng Yanyan,Chen Kai,Huang Zhifang,Luo MingHong 한국화학공학회 2024 Korean Journal of Chemical Engineering Vol.41 No.3

Biomass tar is a by-product generated during biomass gasifi cation. Because of the toxic and harmful nature of biomass tar, its treatment method has become the concern of environmental protection fi eld and related researchers. In this paper, biomass tar was separated into the heavy tar and the phenol-containing liquor after enrichment. Porous carbon (PCs) was prepared using the heavy tar by one-step carbonization activation. The results show that PC_3 has the highest specifi c surface area of 352 m 2 g −1 and mesoporosity ratio of 56.25%. The as-prepared electrode displayed an excellent electrochemical performance for portable super-capacitors, which is a volumetric capacitance of 349 F cm −3 . Assembled super-capacitors have an energy density of 21.65 Wh kg −1 at a power density of 123 W kg −1 . The bio-resins were modifi ed with the phenolcontaining liquor. The results showed that the thermal stability of modifi ed resins had been improved and the structure did not change signifi cantly. This research provides an environmentally friendly and comprehensive utilisation methods for the utilisation of biomass tar.

SPINK1 promotes cell growth and metastasis of lung adenocarcinoma and acts as a novel prognostic biomarker

( Liyun Xu ),( Changchang Lu ),( Yanyan Huang ),( Jihang Zhou ),( Xincheng Wang ),( Chaowu Liu ),( Jun Chen ),( Hanbo Le ) 생화학분자생물학회(구 한국생화학분자생물학회) 2018 BMB Reports Vol.51 No.12

Serine protease inhibitor Kazal type 1 (SPINK1) plays a role in protecting the pancreas against premature activation of trypsinogen and is involved in cancer progression. SPINK1 promoted LAC cells growth, migration, and invasion. Mechanistically, we found that SPINK1 promoted LAC cells migration and invasion via up-regulating matrix metalloproteinase 12 (MMP12). We observed that SPINK1 expression was only up-regulated in lung adenocarcinoma (LAC) tissues, and was an independent prognostic factor for poor survival. Our results indicate that SPINK1 might be a potential biomarker for LAC that promotes progression by MMP12. [BMB Reports 2018; 51(12): 648-653]

The effect of the HRB linker of Newcastle disease virus fusion protein on the fusogenic activity

Liu Yaqing,Liu Ying,Huang Yanan,Wen Hongling,Zhao Li,Song Yanyan,Wang Zhiyu 한국미생물학회 2021 The journal of microbiology Vol.59 No.5

Newcastle disease, designated a class A disease of poultry by the Office international des epizooties (OIE), is an acute infection caused by Newcastle disease virus (NDV). The merging of the envelope of NDV with the membrane of a target host cell is the key step in the infection pathway, which is driven by the concerted action of two glycoproteins: haemagglutinin- neuraminidase (HN) and fusion (F) protein. When the HN protein binds to the host cell surface receptor, the F protein is activated to mediate fusion. The three-dimensional structure of the F protein has been reported to have low electron density between the DIII domain and the HRB domain, and this electron-poor region is defined as the HRB linker. To clarify the contributing role of the HRB linker in the NDV F protein-mediated fusion process, 6 single amino acid mutants were obtained by site-directed mutagenesis of the HRB linker. The expression of the mutants and their abilities to mediate fusion were analysed, and the key amino acids in the HRB linker were identified as L436, E439, I450, and S453, as they can modulate the fusion ability or expression of the active form to a certain extent. The data shed light on the crucial role of the F protein HRB linker in the acquisition of a normal fusogenic phenotype.

Improved Meet-in-the-Middle Attacks on Crypton and mCrypton

( Jingyi Cui ),( Jiansheng Guo ),( Yanyan Huang ),( Yipeng Liu ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.5

Crypton is a SP-network block cipher that attracts much attention because of its excellent performance on hardware. Based on Crypton, mCrypton is designed as a lightweight block cipher suitable for Internet of Things (IoT) and Radio Frequency Identification (RFID). The security of Crypton and mCrypton under meet-in-the-middle attack is analyzed in this paper. By analyzing the differential properties of cell permutation, several differential characteristics are introduced to construct generalized δ-sets. With the usage of a generalized δ-set and differential enumeration technique, a 6-round meet-in-the-middle distinguisher is proposed to give the first meet-in-the-middle attack on 9-round Crypton-192 and some improvements on the cryptanalysis of 10-round Crypton-256 are given. Combined with the properties of nibble permutation and substitution, an improved meet-in-the-middle attack on 8-round mCrypton is proposed and the first complete attack on 9-round mCrypton-96 is proposed.

Comparative Study on Inclusions in Mg-Nd-Zn-Zr Melt Employing Flux and Fluxless Purification Approach

Hanxue Cao,Hao Jiang,Yanyan Huang,Chengzhi Yang,Siyuan Long 한국정밀공학회 2017 International Journal of Precision Engineering and Vol.18 No.11

Two purification approaches, flux approach (flux shielding and flux refining) and fluxless approach (protective atmospheres and inert gas bubbling), are implemented to remove the inclusions in Mg-Nd-Zn-Zr melt. The purification effects are assessed by studying structural properties, chemical composition and the origin of the inclusions. The amount and the average size of the inclusions raise at first, then decrease during flux (or fluxless) refining process, which include 15 min flux refining (or gas bubbling) and 10 min settling. Both approaches have the effect to protect Mg melt and separate inclusions from the melt, but fluxless approach is not as effective as flux approach in the control of inclusions. Either way, oxides and carbides can be found in magnesium (Mg) melt, and the former are the most predominant non-metallic inclusions. Undissolved zirconium (Zr) particles are observed over the process of both techniques, which is a characteristic of Zr alloying Mg alloys, and these particles are easy to settle due to high density. The emergence of chlorine (Cl) atoms in inclusions implies flux inclusions are formed during flux purification, while sulphur (S) is detected in fluxless purification indicates sulphides or sulphates occur in Mg melt as a result of the usage of fire extinguishing sulfur powder.