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Search Results: 1 - 10 of 34383 matches for " CuiYun Lu "
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A consensus linkage map of common carp (Cyprinus carpio L.) to compare the distribution and variation of QTLs associated with growth traits
XianHu Zheng,YouYi Kuang,WeiHua Lv,DingChen Cao,XiaoFeng Zhang,Chao Li,CuiYun Lu,XiaoWen Sun
Science China Life Sciences , 2013, DOI: 10.1007/s11427-012-4427-3
Abstract: The ability to detect and identify quantitative trait loci (QTLs) in a single population is often limited. Analyzing multiple populations in QTL analysis improves the power of detecting QTLs and provides a better understanding of their functional allelic variation and distribution. In this study, a consensus map of the common carp was constructed, based on four populations, to compare the distribution and variation of QTLs. The consensus map spans 2371.6 cM across the 42 linkage groups and comprises 257 microsatellites and 421 SNPs, with a mean marker interval of 3.7 cM/marker. Sixty-seven QTLs affecting four growth traits from the four populations were mapped to the consensus map. Only one QTL was common to three populations, and nine QTLs were detected in two populations. However, no QTL was common to all four populations. The results of the QTL comparison suggest that the QTLs are responsible for the phenotypic variability observed for these traits in a broad array of common carp germplasms. The study also reveals the different genetic performances between major and minor genes in different populations.
Pipe Defect Detection and Reconstruction Based on 3D Points Acquired by the Circular Structured Light Vision
Wang Ying,Jin Cuiyun,Zhang Yanhui
Advances in Mechanical Engineering , 2013, DOI: 10.1155/2013/670487
Abstract: The inspection of pipe inside is very important so as to ensure the safety of pipe transmission. The pipe defect detection method based on inside 3D points acquired by circle structured light vision system was discussed in this paper. Based on the characteristics of 3D points inside a pipe acquired by circle structured light, a method by which pipe inner surface convex defect and pit defect were identified by the normal vector angle between adjacent points change on the same circle was proposed. A distance constraint between each pair of corresponding adjacent two points was proposed in order to recognize holes in the pipe inside. Based on Delaunay triangulation principle, the triangulation method for pipe inner surface circle structured light vision 3D points with hole and without hole was discussed and 3D reconstruction of the pipe was then realized. On the VC++ 6.0 software platform, pipe inner surface defect simulation data, hole simulation data and real 3D data were used to test the correctness of pipe defect identification method. 1. Introduction Pipe transmission is the most important mode for transmitting liquids and gases. Many aging pipes are suffering from corrosion caused by high causticity of the liquid or gas transmitted. Therefore the inspection of pipe inside is very important to ensure the safety of pipe transmission and avoid leakage. The traditional pipe inspection technology includes ultrasonic technology [1] and magnetic flux leakage (MFL) technology [2], which make it necessary that the pipe be scanned along the concerned area because only a limited area of the pipe is measured each time by these methods and the detection efficiency of these techniques is very low. Video technology is used to inspect the pipe inside since quantity information can be obtained by cameras and information is visualized [3]. The video inspection system consists of a high-resolution video camera and a lighting system, with the camera connected via a multicore cable to a remote computer and the pipe corrosion status can be determined by acquired images. Duran et al. [4] tried to inspect the defect of the pipe inside with a laser-based transducer. But the accuracy was low and the method could not exactly determine the pipe corrosive rate so the service period could not be estimated precisely. Machine vision technology is used to measure the 3D shape of the object and the accurate space dimension of the piece. It is expected that the pipe inside defect can be spotted by machine vision system accurately so that the pipe corrosive rate can be determined by
Correlation analysis of microsatellite DNA markers with body weight, length and height of common carp (Cyprinus carpio L.)

ZHANG Yi-Feng,ZHANG Yan,LU CuiYun,CAO Ding-Chen,SUN Xiao-Wen,

遗传 , 2008,
Abstract: Forty-seven microsatellite markers were selected to analyze the genomic DNA of 92 progenies derived from the recombinant inbred lines (RIL) of common carp, which came from the cross between Barbless carp and Hebao-cold tolerance red carp. The results showed that a total of 162 different alleles were found, and the number of alleles in each locus was 2 to 6. The DNA fragment length was 100 bp to 444 bp, and the number of mean valid alleles was 1.3069 to 4.2288. The value of heterozygosity was 0.2361 to 0.7677, and the mean polymorphism information content (PIC) was 0.5368. A GLM procedure was used to analyze the effects of these 47 microsatellites on body weight, length and height. Results uncovered HLJ695, HLJ716, HLJ739, HLJ759, HLJ774 and K16 had a significant impact on body weight, length and height, and HLJ776 had a significant impact on height. In addition, the genotypes of these correlative loci were determined.
Aeration and artificial streaming technology for remediation of polluted river water

Lu Cuiyun,Pang Zhihu,Lin Fangmin,Chen Jianyu,Hu Xiaodong,Lin Weizhong,

环境工程学报 , 2012,
Abstract: 基于模拟河道反应器,考察了曝气充氧及人工造流技术对污染水体的修复效果。结果表明,河道本身具有一定的自净能力,自然运行条件下对COD、TP、NH3-N和TN的去除率分别为7.44%、4.88%、5.70%和10.60%。通过对模拟河道进行曝气充氧,最佳气水比条件下对COD、TP、NH3-N和TN的去除率分别为15.33%、10.45%、6.78%和21.18%。在曝气基础上通过设置人工阻流板,对COD、TP、NH3-N和TN的去除率分别为26.82%、16.07%、9.51%和23.80%。结果初步显示,通过曝气充氧和人工造流技术的集成应用研究,对污染水体具有明显有效的修复作用。
SLAF-seq: An Efficient Method of Large-Scale De Novo SNP Discovery and Genotyping Using High-Throughput Sequencing
Xiaowen Sun, Dongyuan Liu, Xiaofeng Zhang, Wenbin Li, Hui Liu, Weiguo Hong, Chuanbei Jiang, Ning Guan, Chouxian Ma, Huaping Zeng, Chunhua Xu, Jun Song, Long Huang, Chunmei Wang, Junjie Shi, Rui Wang, Xianhu Zheng, Cuiyun Lu, Xiaowu Wang, Hongkun Zheng
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0058700
Abstract: Large-scale genotyping plays an important role in genetic association studies. It has provided new opportunities for gene discovery, especially when combined with high-throughput sequencing technologies. Here, we report an efficient solution for large-scale genotyping. We call it specific-locus amplified fragment sequencing (SLAF-seq). SLAF-seq technology has several distinguishing characteristics: i) deep sequencing to ensure genotyping accuracy; ii) reduced representation strategy to reduce sequencing costs; iii) pre-designed reduced representation scheme to optimize marker efficiency; and iv) double barcode system for large populations. In this study, we tested the efficiency of SLAF-seq on rice and soybean data. Both sets of results showed strong consistency between predicted and practical SLAFs and considerable genotyping accuracy. We also report the highest density genetic map yet created for any organism without a reference genome sequence, common carp in this case, using SLAF-seq data. We detected 50,530 high-quality SLAFs with 13,291 SNPs genotyped in 211 individual carp. The genetic map contained 5,885 markers with 0.68 cM intervals on average. A comparative genomics study between common carp genetic map and zebrafish genome sequence map showed high-quality SLAF-seq genotyping results. SLAF-seq provides a high-resolution strategy for large-scale genotyping and can be generally applicable to various species and populations.
The permeability effect of microcystin-RR on Escherichia coli and Bacillus subtilis
CuiYun Yang,ChuanHai Xia,ShiWei Zhou,YongDing Liu
Chinese Science Bulletin , 2010, DOI: 10.1007/s11434-010-3169-5
Abstract: Microcystins are a kind of cyclic hepatoxins produced by many species of cyanobacteria. Most previous work have been done on the toxic effects of microcystins on animals and plants. However, the reports about the effect of microcystins on microbial cells are very limited. In this work, the permeability of MC-RR on the cell outer membrane of Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis) was discussed. The permeability effect of MC-RR on the cell outer membrane of E. coli and B. subtilis under different concentrations was demonstrated by a rapid and sustained reduction in the A 675 values of lysozyme-treated cells. The decrease of the absorbance values showed a time- and dose-effect. The extravasations of protein and carbonhydrate increased with the increment of the treated-concentration of MC-RR. The results showed that MC-RR could increase the permeability of cell outer membranes of E. coli and B. subtilis. The synergistic effects of MC-RR and lysozyme on bacteria indicated that MC-RR might play an ecological role in bacteria in combination with other substances in some aquatic environments.
Optimization of parameters on photocatalytic degradation of chloramphenicol using TiO2 as photocatalyist by response surface methodology

Junwei Zhang,Dafang Fu,Yunda Xu,Cuiyun Liu,

环境科学学报(英文版) , 2010,
Abstract: The experimental design methodology was applied for modeling and optimizing the operation parameters on photocatalytic degradation of chloramphenicol (CAP) using TiO2 as photocatalyst in a photoreactor. Three experimental parameters (including pH, TiO2 concentration and CAP initial concentration) were adopted to obtain the preliminary information. The multivariate experimental design was employed to establish a quadratic model as a functional relationship between the degradation rate of CAP and three experimental parameters. The interaction e ects and optimal parameters were obtained by using Design Expert software. The optimal values of the operation parameters under the related constraint conditions were found at pH 6.4, TiO2 concentration of 0.94 g/L and CAP initial concentration of 19.97 mg/L, respectively. The degradation rate of CAP approached 85.97% under optimal conditions. The regression analysis with R2 value of 0.9519 had a good agreement between the experimental results and the predictive values. In addition, pH and TiO2 concentration had a significant influence on the degradation rate of CAP.
Isolation and Characterization of Equine Influenza Viruses (H3N8) from China, 2010~2011
Gang Lu1,§, Jie Chen2,§, Wei Guo1,§, Ting Qi1,§, Liping Zhao1, Hongmei Li1, Yuanyuan Ji1, Zheng Wang1, Cuiyun Liu1, Shihua Zhao1 and Wenhua Xiang1,*
Pakistan Veterinary Journal , 2013,
Abstract: Two equine influenza virus (EIV) strains were isolated during two restricted outbreaks from Heilongjiang Province, China in 2010 and 2011. Phylogenetic analysis of HA1 (hemagglutinin 1) gene revealed that the isolates belonged to Florida 2 sublineage of American lineage. Further analysis of the putative antigenic sites located in HA1 subunit protein revealed each isolate had a unique amino acid change. Analysis of antigenic sites between Chinese EIV and vaccine strains indicated equine influenza (EI) vaccines containing Richmond/1/07-like antigen seemed to have an optimum effect in China. Meanwhile, the Ohio/03 vaccine strain contained in updated ProteqFlu had the most closely genetically relationship with recent EIV isolates in China. China has not its own commercially available EI vaccine and most horses are still unvaccinated. Therefore, to monitor antigenic variation of circulating EIVs and give considerable suggestions on selection of vaccine candidate plays an important role in preventing and controlling EIV in China.
Mobile Payments—Why They Are So Successful?  [PDF]
Lu Lu
Open Journal of Business and Management (OJBM) , 2019, DOI: 10.4236/ojbm.2019.73078
Abstract: Mobile payment service is exploding at an impressive rate as the global mobile payment revenue almost tripled over the last five years. But the reasons behind this phenomenon are still not clear. This paper thus focuses on identifying the key factors that contribute to the success of mobile payments. We firstly take a look at the current status of mobile payments. With this brief background in mind, we then address several questions associated with three key actors of mobile payment ecosystem: m-payment service provider, consumer, merchants. Specifically, the business model of mobile payments firms (including value proposition, market contribution, revenue source), consumer preferences and merchant. Conclusions: Mobile payment is gradually developing towards diversification and cross-border integration with highly sophisticated technology behind; the success of mobile payments application is based on aprofitable and valuable business model; in order to gain a competitive advantage when facing with fierce competition in the market, firms should respond best to consumer change and merchant feedback.
Effects of sand burial on biomass, chlorophyll fluorescence and extracellular polysaccharides of man-made cyanobacterial crusts under experimental conditions
WeiBo Wang,CuiYun Yang,DongShan Tang,DunHai Li,YongDing Liu,ChunXiang Hu
Science China Life Sciences , 2007, DOI: 10.1007/s11427-007-0051-z
Abstract: Soil cyanobacterial crusts occur throughout the world, especially in the semiarid and arid regions. It always encounters sand burial, which is an important feature of mobile sand dunes. A greenhouse study was conducted to determine the effects of sand burial on biomass, chlorophyll fluorescence and extracellular polysaccharides of man-made cyanobacterial crusts in six periods of time (0, 5, 10, 15, 20 and 30 d after burying) and at five depths (0, 0.2, 0.5, 1 and 2cm). The results indicated that with the increase of the burial time and burial depth extracellular polysaccharides content and Fv/Fm decreased correspondingly and there were no significant differences between 20 and 30 burial days under different burial depths. The degradation of chlorophyll a content appeared only at 20 and 30 burial days and there was also no significant difference between them under different burial depths. It was also observed a simultaneous decrease of the values of the Fv/Fm and the content of extracellular polysaccharides happened in the crusted cyanobacterium Microcoleus vaginatus Gom. It may suggest that there exists a relationship between extracellular polysaccharides and recovery of the activity of photosystem II (PS II) after rehydration.
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