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Search Results: 1 - 10 of 85862 matches for " Jin-Liang Xu "
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Topology discovery of Ethernet networks based on SNMP
基于SNMP的以太网拓扑发现

HUANG Jin-liang,DU Xu,
黄锦亮
,杜旭

计算机应用 , 2006,
Abstract: Network topology discovery is the basic function of many network management systems, The physical topology discovery algorithm was analyzed and compared relying on standard SNMP MIB FDB and the algorithm relying on STP information in the first place, Then a new algorithm for discovering Ethemet topology was presented, which had the advantages of the two algorithms. Implementation of this algorithm could determine the physical topology simply and efficiently, and could be applied to all kinds of Ethemet networks.
Molecular Dynamics Simulations on Evaporation of Droplets with Dissolved Salts
Bing-Bing Wang,Xiao-Dong Wang,Min Chen,Jin-Liang Xu
Entropy , 2013, DOI: 10.3390/e15041232
Abstract: Molecular dynamics simulations are used to study the evaporation of water droplets containing either dissolved LiCl, NaCl or KCl salt in a gaseous surrounding (nitrogen) with a constant high temperature of 600 K. The initial droplet has 298 K temperature and contains 1,120 water molecules, 0, 40, 80 or 120 salt molecules. The effects of the salt type and concentration on the evaporation rate are examined. Three stages with different evaporation rates are observed for all cases. In the initial stage of evaporation, the droplet evaporates slowly due to low droplet temperature and high evaporation latent heat for water, and pure water and aqueous solution have almost the same evaporation rates. In the second stage, evaporation rate is increased significantly, and evaporation is somewhat slower for the aqueous salt-containing droplet than the pure water droplet due to the attracted ion-water interaction and hydration effect. The Li +-water has the strongest interaction and hydration effect, so LiCl aqueous droplets evaporate the slowest, then NaCl and KCl. Higher salt concentration also enhances the ion-water interaction and hydration effect, and hence corresponds to a slower evaporation. In the last stage of evaporation, only a small amount of water molecules are left in the droplet, leading to a significant increase in ion-water interactions, so that the evaporation becomes slower compared to that in the second stage.
Wave Model and Wave Drift Caused by the Asymmetry of Crest and Trough
Jin-Liang Wang
Physics , 2014,
Abstract: It follows from the review on classical wave models that the asymmetry of crest and trough is the direct cause for wave drift. Based on this, a new model of Lagrangian form is constructed. Relative to the Gerstner model, its improvement is reflected in the horizontal motion which includes an explicit drift term. On the one hand, the depth-decay factor for the new drift accords well with that of the particle's horizontal velocity. It is more rational than that of Stokes drift. On the other hand, the new formula needs no Taylor expansion as for Stokes drift and is applicable for the waves with big slopes. In addition, the new formula can also yield a more rational magnitude for the surface drift than that of Stokes.
Modeling the Propagation, Breaking and Drift of Ocean Surface Wave
Jin-Liang Wang
Physics , 2013,
Abstract: A new model other than the classical ones given by Airy, Stokes and Gerstner for the ocean surface wave is constructed. It leads to new understandings for the wave mechanisms: (1) A wave with bigger amplitude or smaller steepness travels faster; (2) The wave breaks when the front angle is bigger than 46.3 degree; (3) The magnitude of the wave drift should be smaller than that of the known Stokes drift.
Ocean Wave Model and Wave Drift Caused by the Asymmetry of Crest and Trough  [PDF]
Jin-Liang Wang, Hui-Feng Li
Open Journal of Marine Science (OJMS) , 2017, DOI: 10.4236/ojms.2017.73025
Abstract: It follows from the review on classical wave models that the asymmetry of crest and trough is the direct cause for wave drift. Based on this, a new model of Lagrangian form is constructed. Relative to the Gerstner model, its improvement is reflected in the horizontal motion which includes an explicit drift term. On the one hand, the depth-decay factor for the new drift accords well with that of the particle’s horizontal velocity. It is more rational than that of Stokes drift. On the other hand, the new formula needs no Taylor expansion as for Stokes drift and is applicable for the waves with big slopes. In addition, the new formula can also yield a more rational magnitude for the surface drift than that of Stokes.
Polymorphisms and a Haplotype in Heparanase Gene Associations with the Progression and Prognosis of Gastric Cancer in a Northern Chinese Population
Ai-Lin Li, Yong-Xi Song, Zhen-Ning Wang, Peng Gao, Yuan Miao, Jin-Liang Zhu, Zhen-Yu Yue, Hui-Mian Xu
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0030277
Abstract: Background Human heparanase plays an important role in cancer development and single nucleotide polymorphisms (SNPs) in the heparanase gene (HPSE) have been shown to be correlated with gastric cancer. The present study examined the associations between individual SNPs or haplotypes in HPSE and susceptibility, clinicopathological parameters and prognosis of gastric cancer in a large sample of the Han population in northern China. Methodology/Principal Findings Genomic DNA was extracted from formalin-fixed, paraffin-embedded normal gastric tissue samples from 404 patients and from blood from 404 healthy controls. Six SNPs were genotyped by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. A chi-square (χ2) test and unconditional logistic regression were used to analyze the risk of gastric cancer; a Log-rank test and Cox proportional hazards model were used to produce survival analysis and a Kaplan-Meier method was used to map survival curves. The mean genotyping success rates were more than 99% in both groups. Haplotype CA in the block composed of rs11099592 and rs4693608 had a greater distribution in the group of Borrmann types 3 and 4 (P = 0.037), the group of a greater number of lymph node metastases (N3 vs N0 group, P = 0.046), and moreover was correlated to poor survival (CG vs CA: HR = 0.645, 95%CI: 0.421–0.989, P = 0.044). In addition, genotypes rs4693608 AA and rs4364254 TT were associated with poor survival (P = 0.030, HR = 1.527, 95%CI: 1.042–2.238 for rs4693608 AA; P = 0.013, HR = 1.546, 95%CI: 1.096–2.181 for rs4364254 TT). There were no correlations between individual SNPs or haplotypes and gastric cancer risk. Conclusions/Significance A functional haplotype in HPSE was found, which included the important SNP rs4693608. SNPs in HPSE play an important role in gastric cancer progression and survival, and perhaps may be a molecular marker for prognosis and treatment values.
Development of a Reverse Transcription Loop-Mediated Isothermal Amplification Assay for Visual Detection of Porcine Epidemic Diarrhea Virus
Sun Quan-Wen,Wu Shu-Qin,Yang Cui-Jun,Wang Jin-Liang,Ge Jian,Chang Bao,Xu Tong
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2012.1897.1900
Abstract: To develop a new, rapid, practical and sensitive method for detection of Porcine Epidemic Diarrhea Virus (PEDV), a Reverse Transcription Loop Mediated isothermal Amplification (RT-LAMP) assay was established based on six primers in the conserved gene. The method had specificity but no cross-reaction with other viruses and was 100 fold higher than RT-PCR. The result suggested that the newly developed RT-LAMP assay is a simple and specific method for rapid detection of PEDV in field conditions and it has a high practical value in PEDV integrated control and early diagnosis.
Review Experimental Research of Insect Flying Aerodynamics
昆虫飞行参数测量实验研究进展

ZHAO Chuang-xin,XU Jin-liang,ZHANG Yong-li,ZHANG Yang,
赵创新
,徐进良,张永立,Yang,Zhang

实验力学 , 2005,
Abstract: The aerodynamics of insect flight has fascinated physicists and biologists for more than a century.There are three main methods to be applied in observing insect flight including real insects,mechanical models and combination both at the same time.By using real insects we can get some parameters which reflect the real condition accurately,but its repetition is poor.Then insect models resolve this problem by adapting mechanical wings.Although it provides more parameters of the model wings,there are some differences between the models and real insects,and models can not reflect real conditions of insect flight.Combinations of these two methods are applied widely in studying the mechanism of insect flight.High-speed camera and mechanical modeling have allowed researchers to make rapid progress in advancing our understanding of insect flight.These methods have revealed the fluid dynamic phenomena underlying flapping flight.This review covers the basic approaches used in aerodynamics of insect flight,as well as their physical principles and results.
Preliminary Comparison of Various Agricultural Information from Different Sources
农情遥感信息与其他农情信息的对比分析

HUANG Jin-liang,XU Xin-gang,WU Bing-fang,
黄进良
,徐新刚,吴炳方

遥感学报 , 2004,
Abstract: Agricultural information is various and from different sources ,such as remote sensing monitoring, statistic data, market research, meteorological information, and in-situ measurement. These data distribute dispersedly in different government departments or units, and lack mutual exchange and validation, comprehensive analysis and organic integration. In order to take advantage of various kinds of data, comprehensive analysis should be strengthened. In this paper, agricultural information from various sources, such as cropland acreage, crop acreage, crop yield, crop growth and grain yield, is compared and analyzed preliminarily on the aspect of content and expression fashion,and statistic approach and so on. Compared agricultural information by remote sensing with other information, cropland acreage by remote sensing is accurate and credible. Crop growth monitored by remote sensing is much more direct and comprehensive. Crop acreage by remote sensing is larger than that by statistic data(statistic crop acreage maybe lesser). Crop yield of per units estimated by remote sensing is lower than statistic data(statistic data maybe higher). Crop yield estimated by remote sensing is approaching relatively to statistic data,but there is still difference. Crop yield estimated by remote sensing maybe higher,and by statistic data maybe lower . Through comparison of various agricultural information from different sources, it is affirmative that agricultural information by remote sensing has advantages in objectivity, spatio-temporal continuity, comparability, forecast-ability and lower cost. On the other hand, agricultural information by remote sensing has deficiency and localization. Though analysis in this paper it is indicated that both remote sensing information and other information are valuable in existence, and their accuracy need be enhanced. Different agricultural information could not be substituted they are complementary and validated for each other. In order to reflect agricultural circumstances more entirely and exactly, agricultural information from different sources should be comprehensively analyzed and integrated.
Monte Carlo Method and 3D Digital Human Model Applied for Quality Assurance of the Radiotherapy Treatment Planning
蒙特卡罗方法和三维数字人体模型在放疗计划质量保证中的应用

WANG Jin-liang,BAI Jing,LUO Jian-wen,XU Xie,
王进亮
,白净,罗建文,徐榭

生物物理学报 , 2005,
Abstract: Quality assurance in the radiotherapy planning is an effective method to assure the success of radiotherapy. Some methods validating and evaluating radiotherapy planning, such as the CT simulator and phantom method, have their own advantages and disadvantages. A method based upon human image data is proposed to design the simulation model. The Monte Carlo software MCNP and the Visible Human Project (VHP) dataset are used to simulate the 3-D dose distribution in human body during the procedure of radiotherapy. This method can obtain the real 3-D dose distribution in radiotherapy because of the use of human real image data and the accuracy of Monte Carlo method in computing the particle transportation.
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