A Novel pH-Stable, Bifunctional Xylanase Isolated from a Deep-Sea Microorganism, Demequina sp. JK4

Meng Xin,Zong Ze Shao,Yu Zhi Hong,Ling Lin,Chan Juan Li,Zi Duo Liu 한국미생물 · 생명공학회 2009 Journal of microbiology and biotechnology Vol.19 No.10

A Diffusion Filter for Discontinuous Surface Measured by High Definition Metrology

Meng Wang,Yi-Ping Shao,Shi-Chang Du,Li-feng Xi 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.

High definition metrology can measure three-dimensional surface topography of discontinuous surfaces that have holes and grooves with large field of field and high lateral resolution. However, when separating discontinuous surfaces in to various scale-limited surface such as form, waviness and roughness, filtering techniques such as Gaussian filters cause “boundary distortion problems. This is because the discontinuous surfaces do not have large enough continuous evaluation area for Gaussian filtering. Therefore, this research proposes a modified anisotropic diffusion filter, which is formulated in terms of heat diffusion, to separate discontinuous surfaces into various scale-limited surfaces. An edge detector is proposed to ensure that the diffusion process only takes place inside the surface but not blur the surface boundaries. In addition, the diffusion time is specified considering the linkage with the cutoff wavelength of Gaussian filters. The performance of the proposed filter is validated by simulated and practical discontinuous surfaces. Moreover, the three dimensional areal surface texture features specified in ISO 25178 can be evaluated from the filtered scale-limited surfaces. Results have demonstrated that the proposed approach is an effective tool for separating and evaluating areal surface texture for discontinuous surfaces regardless of the continuity of the evaluation surface.

Cloning, Expression, and Characterization of a New Phytase from the Phytopathogenic Bacterium Pectobacterium wasabiae DSMZ 18074

( Shao Na ),( Huo Qing Huang ),( Kun Meng ),( Hui Ying Luo ),( Ya Ru Wang ),( Pei Long Yang ),( Bin Yao ) 한국미생물 · 생명공학회 2008 Journal of microbiology and biotechnology Vol.18 No.7

Eco-Friendly Electrochemical Biosensor based on Sodium Carboxymethyl Cellulose/Reduced Graphene Oxide Composite

Meng Cui,Ziqiang Shao,DAYONG LU,Yang Wang 한국고분자학회 2019 Macromolecular Research Vol.27 No.4

Reduced graphene oxide (GO) and carboxymethyl cellulose sodium (CMC) composite film was prepared by a simple solution blending method. The obtained composite film was used to modify glassy carbon electrode (GCE) to detect Vitamin B6 (VB6) with electrochemical measurements. Morphologies and stucture of the composite were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR) and electron paramagnetic resonance (EPR). The electrochemistry performances of the GCE modified by GO/CMC composite were investigated by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The results revealed that CMC and GO were able to form a homogeneous mixture, and the modified GCE presented extremely strong sensitivity towards VB6 such as high detection sensitivity, low detection limit, small Ret value, certain stability and excellent reversibility. The good performance might be attributed to high electrical conductivity and large surface-to-volume ratio of GO which could accelerate electron transfer between the surface of GCE and VB6. The test results showed that GO/CMC composite was a novel electrochemical biosensor for the detection of VB6.

PRECONDITIONED AOR ITERATIVE METHODS FOR SOLVING MULTI-LINEAR SYSTEMS WITH 𝓜-TENSOR

QI, MENG,SHAO, XINHUI The Korean Society for Computational and Applied M 2021 Journal of applied mathematics & informatics Vol.39 No.3

Some problems in engineering and science can be equivalently transformed into solving multi-linear systems. In this paper, we propose two preconditioned AOR iteration methods to solve multi-linear systems with -tensor. Based on these methods, the general conditions of preconditioners are given. We give the convergence theorem and comparison theorem of the two methods. The results of numerical examples show that methods we propose are more effective.

Prevalence of Human Papillomavirus 16 in Esophageal Cancer Among the Chinese Population: a Systematic Review and Meta-analysis

Zhang, Shao-Kai,Guo, Lan-Wei,Chen, Qiong,Zhang, Meng,Liu, Shu-Zheng,Quan, Pei-Liang,Lu, Jian-Bang,Sun, Xi-Bin Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.23

Background and Aim: No firm evidence of HPV infection in esophageal cancer has been established to date. The aim of this meta-analysis was to investigate the prevalence of HPV 16 in esophageal cancer in China, which had a high burden of the disease. Materials and Methods: Studies on HPV infection and esophageal cancer were identified and a random-effects model was used to pool the summary prevalence and corresponding 95% confidence intervals (CIs). Results: A total of 3,429 esophageal cancer cases were evaluated from 26 eligible studies in this meta-analysis. The summary estimate for HPV16 prevalence was 0.381 (95% CI: 0.283, 0.479). The prevalence varied by geographical areas of the study, publication year, HPV detection method and types of specimen. In sensitivity analysis, HPV 16 prevalence ranged from 0.368 (95% CI: 0.276, 0.460) to 0.397 (95% CI: 0.286, 0.508). Conclusions: The results indicate a relatively high level of HPV 16 prevalence in esophageal cancer among Chinese population, although there was variation between different variables. Further studies are needed to elucidate the role of HPV in esophageal carcinogenesis with careful consideration of study design and laboratory detection method, providing more accurate assessment of the HPV status in esophageal cancer.

Study of Hollow Letter CAPTCHAs Recognition Technology Based on Color Filling Algorithm

Huishuang Shao,Yurong Xia,Kai Meng,박창호 한국정보처리학회 2023 Journal of information processing systems Vol.19 No.4

The hollow letter CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart)is an optimized version of solid CAPTCHA, specifically designed to weaken characteristic information andincrease the difficulty of machine recognition. Although convolutional neural networks can solve CAPTCHAin a single step, a good attack result heavily relies on sufficient training data. To address this challenge, wepropose a seed filling algorithm that converts hollow characters to solid ones after contour line restoration andapplies three rounds of detection to remove noise background by eliminating noise blocks. Subsequently, weutilize a support vector machine to construct a feature vector for recognition. Security analysis and experimentsshow the effectiveness of this algorithm during the pre-processing stage, providing favorable conditions forsubsequent recognition tasks and enhancing the accuracy of recognition for hollow CAPTCHA.

주제별 논단 : 한,중 금융협력의 법적 과제와 전망 ; 중국 현행금융법의 문제점과 개선방향

유몽양 ( Meng Yang Liu ),유소군 ( Shao Jun Liu ) 한국금융법학회 2012 金融法硏究 Vol.9 No.2

금융법은 금융경제의 발전에 따라 발전된 새로운 법률체제이다. 중국의 금융법은 30년 동안의 발전을 거쳐 기본적인 법률체제가 형성되었다. 그의 기본적이 특징은 국가법률을 기본구조로 하고 정부의 “조례” 와 관리감독 규장을 기본내용으로 하며 “분업경영” 분업감독을 실시하고 공상업과 금융업의 업무경영을 엄격하게 분리하여 그 서로간의 투자에 대하여 엄격하게 제한한다. 금융기관 내부의 은행업, 신탁업, 증권업, 보험업의 핵심업무를 분리하여 경영하고, 중국인민은행 은행관리감독위원회, 증권관리감독위원회, 보험관리감독위원회가 분업하여 감독하며 금융지주회사에 대해서는 지배주주의 업무성격에 따라 “주감독제도” 및 “합동회의제도”를 실시한다. 금융업무경영은 수권제(受權制)를 실시하고 모든 금융업무경영은 감독기관의 수권을 얻어야 하며, 그렇지 않으면 비법경영에 속한다. 이러한 체제는 은행법시스템, 지불결제시스템, 신탁법시스템, 증권법 시스템, 보험법시스템 및 관리감독법시스템으로 구성한다. 대체적으로 말하자면 이런 법률체제는 중국 금융업발전의 현실상황과 기본적으로 부합한것이다. 다만 세계 각국 금융업의 계속적인 발전에 따라 각국 금융법률 체제가 계속 발전하고 있어, 중국 현행금융법체제의 많은 내용은 계속 발전된 금융추세와 적응하지 않고 많은 내용은 계속적으로 완화하여야 한다고 인식하여야 한다 본문은 중국 금융법의 기본현황을 객관적으로 총결된 바탕으로 중국 금융업의 발전수요와 결합하여 중국 금융법체제에서 존재하는 문제를 논하고, 중국 금융업 발전의 실제내용에 근거하여 체제적으로 중국 현행 금융법을 개선하는 의견을 제세하며 학계와 실무계에 참고를 제공한다. Financial law is a new legal system going with the financial economic development. China financial law has formed a basic legal framework after nearly 30 years development. The essential characters of such a system are that the nation`s laws are the basic framework: The state Council regulations and regulatory body documents are the specific content; to operating under the principle of “segregate management and segregate supervision”; the strictest transaction isolation of industry, commerce and finance; seted strict limits the mutual investment between the two industries; to operating segregate management about core business between banding, trust, securities and insurance industry: segregated supervision by The People`s Bank Of China, China Banking Regulatory Commission, China Securities Regulatory Commission, and China Insurance Regulatory Commission; financial holding companies according to the controlling shareholder to adopt leading supervision and joint meeting system; to have to get a license before operating a financial business, or will be illegal operation. The China financial law system consists of banking law system, payment and clearing law system, trust law system, securities law system, insurance law system and regulatory law system. But, also must see, the financial legal system is constantly improving with the development of finance industry. China financial system has a lot of content needs to be perfected ceaselessly. This paper tries to summarize the basic situation, existing problems and to put forward some improving suggestions about china financial law for relevant professional and administrator are presented as a reference.

Pretension process control based on cable force observation values for prestressed space grid structures

Zhou, Zhen,Meng, Shao-Ping,Wu, Jing Techno-Press 2010 Structural Engineering and Mechanics, An Int'l Jou Vol.34 No.6

Pointing to the design requirement of prestressed space grid structure being the target cable force, the pretension scheme decision analysis method is studied when there's great difference between structural actual state and the analytical model. Based on recursive formulation of cable forces, the simulative recursive system for pretension process is established from the systematic viewpoint, including four kinds of parameters, i.e., system initial value (structural initial state), system input value (tensioning control force scheme), system state parameters (influence matrix of cable forces), system output value (pretension accomplishment). The system controllability depends on the system state parameters. Based on cable force observation values, the influence matrix for system state parameters can be calculated, making the system controllable. Next, the pretension scheme decision method based on cable force observation values can be formed on the basis of iterative calculation for recursive system. In this way, the tensioning control force scheme that can meet the design requirement when next cyclic supplemental tension finished is obtained. Engineering example analysis results show that the proposed method in this paper can reduce a lot of cyclic tensioning work and meanwhile the design requirement can be met.

Longitudinal anti-cracking analysis for post-tensioned voided slab bridges

Zhen Zhou,Shao-ping Meng,Zhao Liu 국제구조공학회 2012 Structural Engineering and Mechanics, An Int'l Jou Vol.43 No.4

Post-tensioned concrete voided slab girders are widely used in highway bridge constructions. To obtain greater section hollow rate and reduce the self-weight, the plate thickness of slab girders are designed to be small with the adoption of flat anchorage system. Since large prestress is applied to the anchor end section, it was found that longitudinal shear cracks are easy to occur along the voided slab girder. The reason is the existence of great shearing effect at the junction area between web and bottom (top) plate in the anchor end section. This paper focuses on the longitudinal anti-cracking problem at the anchor end of post-tensioned concrete voided slab girders. Two possible models for longitudinal anticracking analysis are proposed. Differential element analysis method is adopted to derive the solving formula of the critical cracking state, and then the practical analysis method for longitudinal anti-cracking is established. The influence of some factors on the longitudinal anti-cracking ability is studied. Results show that the section dimensions (thickness of bottom, web and top plate) and prestress eccentricity on web plate are the main factors that influence the anti-cracking ability. Moreover, the proposed method is applied into three engineering examples to make longitudinal anti-cracking verification for the girders. According to the verification results, the design improvements for these girders are determined.