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The New Infinite Sequence Solutions of Multiple Sine-Gordon Equations
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作者 Yu Mei Bai Taogetusang 《Journal of Applied Mathematics and Physics》 2016年第4期796-805,共10页
By the function transformation and the first integral of the ordinary differential equations, the problem of solving the solutions of the double sine-Gordon equation and the treble sine-Gordon equation is researched, ... By the function transformation and the first integral of the ordinary differential equations, the problem of solving the solutions of the double sine-Gordon equation and the treble sine-Gordon equation is researched, and the new solutions are obtained. First, the problem of solving the solutions of the double sine-Gordon equation and the treble sine-Gordon equation is changed to the problem of solving the solutions of the nonlinear ordinary differential equation. Second, with the help of the B?cklund transformation and the nonlinear superposition formula of solutions of the first kind of elliptic equation and the Riccati equation, the new infinite sequence soliton-like solutions of two kinds of sine-Gordon equations are constructed. 展开更多
关键词 First Integral Multiple Sine-Gordon Equation Bäcklund Transformation new Infinite sequence Soliton-Like Solutions
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Constructing infinite sequence exact solutions of nonlinear evolution equations 被引量:3
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作者 套格图桑 那仁满都拉 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第11期23-33,共11页
To construct the infinite sequence new exact solutions of nonlinear evolution equations and study the first kind of elliptic function, new solutions and the corresponding B^cklund transformation of the equation are pr... To construct the infinite sequence new exact solutions of nonlinear evolution equations and study the first kind of elliptic function, new solutions and the corresponding B^cklund transformation of the equation are presented. Based on this, the generalized pentavalent KdV equation and the breaking soliton equation are chosen as applicable examples and infinite sequence smooth soliton solutions, infinite sequence peak solitary wave solutions and infinite sequence compact soliton solutions are obtained with the help of symbolic computation system Mathematica. The method is of significance to search for infinite sequence new exact solutions to other nonlinear evolution equations. 展开更多
关键词 first kind of elliptic function Backlund transformation nonlinear evolution equation new infinite sequence exact solutions
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Methodological issues in the study of intestinal microbiota in irritable bowel syndrome 被引量:10
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作者 Valentina Taverniti Simone Guglielmetti 《World Journal of Gastroenterology》 SCIE CAS 2014年第27期8821-8836,共16页
Irritable bowel syndrome (IBS) is an intestinal functional disorder with the highest prevalence in the industrialized world. The intestinal microbiota (IM) plays a role in the pathogenesis of IBS and is not merely a c... Irritable bowel syndrome (IBS) is an intestinal functional disorder with the highest prevalence in the industrialized world. The intestinal microbiota (IM) plays a role in the pathogenesis of IBS and is not merely a consequence of this disorder. Previous research efforts have not revealed unequivocal microbiological signatures of IBS, and the experimental results are contradictory. The experimental methodologies adopted to investigate the complex intestinal ecosystem drastically impact the quality and significance of the results. Therefore, to consider the methodological aspects of the research on IM in IBS, we reviewed 29 relevant original research articles identified through a PubMed search using three combinations of keywords: &#x0201c;irritable bowel syndrome + microflora&#x0201d;, &#x0201c;irritable bowel syndrome + microbiota&#x0201d; and &#x0201c;irritable bowel syndrome + microbiome&#x0201d;. For each study, we reviewed the quality and significance of the scientific evidence obtained with respect to the experimental method adopted. The data obtained from each study were compared with all considered publications to identify potential inconsistencies and explain contradictory results. The analytical revision of the studies referenced in the present review has contributed to the identification of microbial groups whose relative abundance significantly alters IBS, suggesting that these microbial groups could be IM signatures for this syndrome. The identification of microbial biomarkers in the IM can be advantageous for the development of new diagnostic tools and novel therapeutic strategies for the treatment of different subtypes of IBS. 展开更多
关键词 Intestinal dysfunction Irritable bowel syndrome Intestinal microbiota BIFIDOBACTERIA new generation DNA sequencing
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Determination of the nucleotide or amino acid composition of genome or protein sequences by using natural vector method and convex hull principle
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作者 Xiaopei Jiao Shaojun Pei +2 位作者 Zeju Sun Jiayi Kang Stephen S-T.Yau 《Fundamental Research》 CAS 2021年第5期559-564,共6页
Although with the continuous development of sequencing technology,the number of genome and protein sequences has grown rapidly,these sequences are only a small part of nature.Biologically,it is still a challenging and... Although with the continuous development of sequencing technology,the number of genome and protein sequences has grown rapidly,these sequences are only a small part of nature.Biologically,it is still a challenging and important problem to detect and predict some new genome or protein sequences based on real sequence data,which motivates us to solve the problem mathematically.The first step to predict the new sequences is determining the nucleotide or amino acid composition of them.In this paper,we apply natural vector method and convex hull principle to determine the nucleotide or amino acid composition of new genome or protein sequences.Our algorithm is based on optimization strategy.The SARS-CoV-2 genome and protein datasets are used to verify the feasibility of our algorithm.Numerical experiments show that our algorithm can detect and predict possible number of each nucleotide or amino acid of genome and protein sequence with respect to the second order natural vectors. 展开更多
关键词 Natural vector Convex hull new sequences Optimization
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New Generations: Sequencing Machines and Their Computational Challenges 被引量:1
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作者 David C. Schwartz Michael S. Waterman 《Journal of Computer Science & Technology》 SCIE EI CSCD 2010年第1期3-9,共7页
New generation sequencing systems are changing how molecular biology is practiced. The widely promoted $1000 genome will be a reality with attendant changes for healthcare, including personalized medicine. More broadl... New generation sequencing systems are changing how molecular biology is practiced. The widely promoted $1000 genome will be a reality with attendant changes for healthcare, including personalized medicine. More broadly the genomes of many new organisms with large samplings from populations will be commonplace. What is less appreciated is the explosive demands on computation, both for CPU cycles and storage as well as the need for new computational methods. In this article we will survey some of these developments and demands. 展开更多
关键词 genome sequencing new generation sequencing read mapping optical mapping sequence assembly Eulerian graphs
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