检索结果-南通市图书馆

On Computer Implementation for Comparison of Inverse Numerical Schemes for Non-Linear Equations

Computer Systems Science & Engineering 2021年第3期36卷 493-507页

作者： Mudassir Shams Naila Rafiq Nazir Ahmad Mir Babar Ahmad Saqib Abbasi mutee-ur-rehman kayani Department of Mathematics and Statistics Riphah International UniversityI-14Islamabad44000Pakistan Department of Mathematics NUMLIslamabadPakistan Department of Mathematics Comsats UniversityIslamabad44000Pakistan

In this research article,we interrogate two new modifications in inverse Weierstrass iterative method for estimating all roots of non-linear equation *** modifications enables us to accelerate the convergence order of inverse Weierstrass method from 2 to *** analysis proves that the orders of convergence of the two newly constructed inverse methods are *** computer algebra system Mathematica,we find the lower bound of the convergence order and verify it *** planes of the inverse simultaneous methods and classical iterative methods are generated using MATLAB(R2011b),to present the global convergence properties of inverse simultaneous iterative methods as compared to classical *** non-linear models are taken from Physics,Chemistry and engineering to demonstrate the performance and efficiency of the newly constructed *** CPU time,and residual graphs of the methods are provided to present the dominance behavior of our newly constructed methods as compared to existing inverse and classical simultaneous iterative methods in the literature.

关键词： Non-linear equation inverse iterative method simultaneous method basins of attraction lower bound of convergence

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rapid identification of multi-strain HBV infection in patient by high-throughput DNA sequencing

引用

Frontiers of Electrical and Electronic Engineering in China 2015年第2期10卷 103-106页

作者： Yongchang Zheng Masood ur rehman kayani Ting F. Zhu Department of Liver Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China School of Life Sciences Center for Synthetic and Systems Biology MOE Key Laboratory of Bioinformatics Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Tsinghua University Beijing 100084 China

Hepatitis B is a well-known risk factor for the development of fiver cancer and is closely associated with patient morbidity and mortality. Viral mutants and variants have the potential to evade immune response and prolong infection, and thus it is crucial to develop a methodology for the rapid identification of multi-strain hepatitis infections in patients. Here we describe a method based on selective region amplification of viral genome and deep sequencing, which may be used for rapid identification of multi-strain hepatitis B virus （HBV） infection in patients. The method works even with significantly low amounts of patients＇ serum samples, where the wet-lab procedures take about 1.5 days, followed by a quick bioinformatic analysis to reveal the final results. Our method can potentially be applied to the rapid and reliable identification of multi-strain HBV infection and help improve treatment regiments.

关键词： hepatitis B liver cancer high-throughput sequencing single nucleotide polymorphism bioinformatics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Development of 19-plex Y STR system and polymorphism studies in Pakistani population

引用

Journal of Pharmaceutical Analysis 2008年第4期20卷 267-273页

作者： Faraz Malik Mahmood A. kayani M. Ansar Obaid Ullah Muhammad Shafeeq Shahid Chohan Yassir Abbas Saqib Shazad Ali Raza Rahat rehman Faizan Raiz Qurat-ul-ain Muhammad Hassan Siddiqi Allah Rakha Zia ur rehman Zahoor Ahmed Department of Biosciences COMSATS Insitute of Information Technology Islamabad Pakistan Centre of Excellence in Molecular Biology Lahore Pakistan Centre for Advanced Forensic Sciences University of the Punjab Lahore Pakistan National Key Laboratory of Ministry of Health for Forensic Sciences Xi'an Jiaotong University

For the development of 19-plex Y STR system and polymorphism studies in local ethnic populations sixteen markers of non-recombining regions (NRY) of Y chromosome, which show high power of discrimination among individuals, were selected in this study. Blood samples (600) were collected from the males of three most common castes of Pakistani population (Arain, Awan and Rajput) with different parent lineages. Three markers (DYS385a/b, DYS389I/II and YCAIIa/b) among 16 Y STRs are double-targeted regions of the Y chromosome and thus provide two polymorphic peaks for each respective primer set. These 16 Y-STRs were developed into Megaplex system for simultaneous amplification of all markers within the population. The overall power of discrimination observed in focused populations was 60.5%, 66.5% and 55% in Rajput, Awan and Arain casts respectively. This discrimination power will be helpful in human identification for forensic casework studies including sexual assaults and paternity testing.

关键词： STR Pakistani population polymorphism 19-plex Y STR

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

反应堆冷却剂泵叶轮内液固相互作用研究

反应堆冷却剂泵叶轮内液固相互作用研究

引用

作者： MUNIM rehman kayani 华北电力大学(北京)

学位级别：硕士

反应堆主泵(RCP)是核电站(NPP)中最重要的组件之一。RCP位于核岛的中心位置,属于核安全一级设备。它是驱动冷却剂循环来冷却堆芯并将热量从堆芯传导到蒸汽发生器的设备。反应堆的正常运行和NPP冷却剂泵的安全是非常重要的。RCP在高速,高... 详细信息

反应堆主泵(RCP)是核电站(NPP)中最重要的组件之一。RCP位于核岛的中心位置,属于核安全一级设备。它是驱动冷却剂循环来冷却堆芯并将热量从堆芯传导到蒸汽发生器的设备。反应堆的正常运行和NPP冷却剂泵的安全是非常重要的。RCP在高速,高压,高温以及放射性环境下运行。在设计主泵时,必须研究适当的模型和运行条件,因为RCP叶轮的叶片处于重载下,可能会导致泵失效(由于叶轮变形)。在RCP内部,流场显示冷却剂趋向于撞击叶轮,并在叶片表面产生小的裂缝。计算RCP内的水力应力是一个重要的问题。因此,在运行条件下使用先进的数值模拟方法对泵的结构进行了模拟,以确保泵在正常工作条件下完美地运行。华龙1号NNP(福建省福清市)叶轮用于研究冷却剂对RCP叶轮的影响。用于模拟冷却剂对泵叶轮的影响的工具是SolidWorks 和 Ansys CFX。本文设计了反应堆冷却剂泵叶轮的三维有限元模型。运用计算流体动力学以了解通过叶轮的流体流动和由流体施加的液压。然后将这些压力施加在叶轮上以查看叶轮的应力应变和变形。本文所做的工作可以总结如下。1.总结了世界各国对反应堆主泵的研究现状。根据RCP(M310)叶轮的运行参数设计。2.利用SOLIDWORKS软件建立叶轮三维模型,并将该模型应用于ANSYS中进行CFX网格划分和CFD仿真。从CFX模拟中,创建了叶轮周围的流场,并分析了流体施加在固体上的压力。还讨论了计算流体动力学的简要理论,控制方程和湍流模型。3.简要讨论了有限元方法,并将CFX计算得到的压力值导入叶轮上。4.结果表明:叶轮叶片边缘发生最大变形。叶片和轮毂的连接处出现最大应力和应变。通过增加叶片根部厚度变形可以确定容易开裂的叶轮区域,可以减小应力和应变。

关键词：华龙一号反应堆冷却剂泵叶轮 ANSYS CFD分析

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：