检索结果-南通市图书馆

Dielectric relaxation study of aqueous ethylene glycol mono-methyl ether(EGME)with water using time domain reflectometry technique in the frequency range 10MHz to 50 GHz

引用

Journal of Advanced Dielectrics 2020年第3期10卷 51-59页

作者： Zamir S.Khan M.P.Lokhande Avadhut Deshmukh A.C.Kumbharkhane department of physics anjuman college of engineering and technology sadar NagpurIndia department of physics&Electronics GVISH Amravati 444604India School of Physical Sciences Swami Ramanand Teerth Marathwada University Nanded India

The Complex permittivity spectra of glycol ether(GE)compounds such as ethylene glycol mono-methyl ether(EGME)with water mixture over entire concentration range and in temperature range of 10-25℃ have been determined using Time Domain Reflectometry(TDR)technique in the frequency range 10MHz to 50 *** complex permittivity spectra for EGME-water were fitted in the Cole-Davidson *** Static dielectric constant(ε_(0)^(E)),Relaxation time(τ),effective Kirkwood correlation factor(g_(eff)),excess permittivity(ε_(0)),thermodynamic parameters(activation enthalpy and activation entropy)and Bruggeman factor(f_(B))have been calculated by the nonlinear least square fit *** intermolecular interactions between EGME-water binary mixtures suggest the nonlinear behavior of dielectric *** contribution of hydrogen bonding interactions among the solute-solvent mixtures is confirmed by Excess properties and Bruggeman factor.

关键词： Ethylene glycol mono-methyl ether complex permittivity Kirkwood correlation factor excess dielectric properties thermodynamic parameters Bruggeman factor

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

Thermal stresses induced by a point heat source in a circular plate by quasi-static approach

引用

Theoretical & Applied Mechanics Letters 2011年第3期1卷 36-38页

作者： K.C.Deshmukh Y.I.Quazi S.D.Warbhe V.S.Kulkarni department of Mathematics RTM Nagpur University department of Mathematics anjuman college of engineering and technology sadar Nagpur India department of Mathematics Nagpur University department of Mathematics Govt.college of Engg.Station Road UsmanpuraAurangabad-431005India

The present paper deals with the determination of quasi-static thermal stresses due to an instantaneous point heat source of strength g_(pi) situated at certain circle along the radial direction of the circular plate and releasing its heat spontaneously at time t=τ.A circular plate is considered having arbitrary initial temperature and subjected to time dependent heat flux at the fixed circular boundary of r=*** governing heat conduction equation is solved by using the integral transform method,and results are obtained in series form in terms of Bessel *** mathematical model has been constructed for copper material and the thermal stresses are discussed graphically.

关键词： thermoelastic problem thermal stresses non-homogeneous heat conduction equation heat generation

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

Expert diagnostic system for detection of hypertension and diabetes mellitususing discrete wavelet decomposition of photoplethysmogram signal andmachine learning technique

引用

Medicine in Novel technology and Devices 2023年第3期19卷 53-60页

作者： Muzaffar khan Bikesh Kumar Singh Neelamshobha Nirala department of Biomedical engineering National Institute of TechnologyRaipurChhattisgarh4920210India anjuman college of engineering&technology Sadar MaharashtraNagpur440001India

Hypertension is a leading risk factor for cardiovascular disease (CVD) and the overlap of diabetes mellitus (DM)with hypertension can lead to severe complications. There is a need for early diagnosis and risk stratification toimplement an overall risk management strategy. Presently, the conventional method is not suitable for large-scalescreening. The primary aim of this study is to develop an automated diagnostic system that uses Photoplethysmogram (PPG) signals for the non-invasive diagnosis of hypertension and DM-II. The proposed model usesa statistical feature extracted by decomposing the PPG signal up to level 11 into a sub-band using Discrete wavelettransform (DWT), and a variety of classifiers are used for the classification of hypertension and detection of DM-IIpatients. Three feature selection techniques used are Spearman correlation, ReliefF and Minimum RedundancyMaximum Relevance (mRMR) to select 20 top features out of 130 features using correlation with systole bloodpressure (SBP), diastole blood pressure (DBP) values and D-II. The highest accuracy attained by the Adaptiveneural fuzzy system (ANFIS) for classification categories such as normal (NT) vs prehypertension(PHT), NT *** type 1 (HT-I), NT vs hypertension type 2 (HT-II) in terms of F1 score are 92.%, 98.5%, 98.3% (SBP)and 83.1%, 95.6%, 86.8% (DBP),respectively. The accuracy achieved by the adaptive-network-based fuzzyinference system (ANFIS) for the classification of normal (non-diabetic) vs. diabetic patients is 99.1%. The hybridlearning algorithm-based classifier achieved higher accuracy for hypertension risk stratification as compared tothe hard computing classifier, which requires parameter tuning and DWT decomposition is robust to the noisysignal, overcoming the limitation of the morphological feature-based model.

关键词： Hypertension Diabetes mellitus-II Photoplethysmogram Multi-layer perceptron Adaptive neural fuzzy inference system

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

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

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

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：