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Materials Sciences and Applications 2016年第9期7卷 510-526页

作者： Bheemappa Suresha Suryakanth L. Guggare naraganahalli v. raghavendra Department of Mechanical Engineering The National Institute of Engineering Mysore India Department of Mechanical Engineering Nalla Malla Reddy Engineering College Hyderabad India

Mechanical properties and abrasiv. wear behav.our of bi-directional jute fabric reinforced epoxy (J/Ep) with micron sized TiO2 particles at different wt% (2.5, 5, 7.5 and 10) were inv.stigated. The tribo-potential of combined effect of TiO2 and jute fiber in epoxy (J/Ep) for enhancing the abrasion resistance has not been studied so far. Hence, the present work aims to explore the possibility of using TiO2 filler and jute fiber to reinforce the epoxy and thus open a new way to implement inexpensiv. reinforcements and produce new candidate tribo-material for industrial applications. Silane treated TiO2 filled J/Ep composites were prepared by hand lay-up method. Selected mechanical properties and three-body abrasiv. wear tests were ev.luated as per ASTM standards. Results indicate an enhancement in the J/Ep composite mechanical properties due to addition of TiO2 particles up to 7.5 wt% of loading. Highest tensile and flexural properties were found at 7.5 wt% TiO2 loading. Results of abrasion tests show resistance to abrasion at 5 wt% TiO2 filled J/Ep composite. Scanning electron micrographs ev.denced that the fiber and filler hav. fairly good bonding with matrix. Finally, this inv.stigation confirms the applicability of TiO2 as secondary reinforcement in J/Ep composite.

关键词： TiO2 Filled J/Ep Mechanical Properties Abrasion Scanning Electron Microscopy

Effect of confined one-gluon-exchange potential and instanton-induced interaction on nucleon–nucleon interaction

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Communications in Theoretical Physics 2020年第6期72卷 83-88页

作者： S raghavendra C v.namali Shastry v.K Nilakanthan K B v.jaya Kumar Department of Physics Mangalore UniversityMangalagangotri 574199India Department of Post-Graduate Studies in Physics SDM CollegeUjire 574240India Department of Education in Science and Mathematics Regional Institute of Education MysoreMysuru 570006India Department of Post Graduate Studies in Physics St.Aloysius College(Autonomous)Mangalore 575003India

The effect of confined one-gluon-exchange potential and instanton-induced interaction potential in the singlet(1S0)and triplet(3S1)channels for nucleon–nucleon interaction has been inv.stigated in the framework of the relativ.stic harmonic model using the resonating group method in the adiabatic limit with the Born–Oppenheimer *** contributions of the different components of the interaction potentials hav. been analyzed.

关键词： nucleon–nucleon interaction relativ.stic harmonic model instanton-induced interaction resonating group method confined one-gluon-exchange

DLMNN Based Heart Disease Prediction with PD-SS Optimization Algorithm

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Intelligent Automation & Soft Computing 2023年第2期35卷 1353-1368页

作者： S.raghavendra v.sudev.Parv.ti R.Manjula Ashok Kumar Nanda Ruby Singh D.Lakshmi S.v.lmurugan Department of Information and Communication Technology Manipal Institute of TechnologyManipal Academy of Higher EducationManipal576104India Department of Information Science and Engineering SDM College of Engineering and TechnologyDharwad580002India Department of Computer Science and Engineering School of ComputingSRM Institute of Science and TechnologyKattankulathurChennai603203India Department of Computer Science and Engineering B.V Raju Institute of TechnologyTelangana502313India Faculty of Engineering and Technology SRM Institute of Science and TechnologyNCR CampusUttar Prasesh201204India School of Computing Science and Engineering VIT Bhopal UniversityMadhya Pradesh466114India Department of Computer Science and Engineering Vel Tech Multi Tech Dr.Rangarajan Dr.Sakunthala Engineering CollegeChennai600062India

In contemporary medicine,cardiov.scular disease is a major public health *** diseases are one of the leading causes of death *** are classiﬁed as v.scular,ischemic,or *** information contained in patients’Electronic Health Records(EHR)enables clin-icians to identify and monitor heart *** failure rates hav. risen drama-tically in recent years as a result of changes in modern *** diseases are becoming more prev.lent in today’s medical *** year,a substantial number of people die as a result of cardiac *** primary cause of these deaths is the improper use of pharmaceuticals without the superv.sion of a physician and the late detection of *** improv. the efﬁciency of the classiﬁcation algo-rithms,we construct a data pre-processing stage using feature ***-ments using unidirectional and bidirectional neural network models found that a Deep Learning Modiﬁed Neural Network(DLMNN)model combined with the Pet Dog-Smell Sensing(PD-SS)algorithm predicted the highest classiﬁcation performance on the UCI Machine Learning Heart Disease *** DLMNN-based PDSS achiev.d an accuracy of 94.21%,an F-score of 92.38%,a recall of 94.62%,and a precision of 93.86%.These results are competitiv. and promising for a heart disease *** demonstrated that a DLMNN framework based on deep models may be used to solv. the categorization problem for an unbalanced heart disease *** proposed approach can result in exceptionally accurate models that can be utilized to analyze and diagnose clinical real-world data.

关键词： Machine learning random forest coronary heart disease cardiov.scular optimization algorithm

Prediction of Facial Profile Based on Morphometric Measurements and Profile Characteristics of Permanent Maxillary Central Incisor Teeth

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Journal of Forensic Science and Medicine 2015年第1期1卷 26-32页

作者： raghavendra N v.nkatesh v.Kamath Krishnanand P Satelur Komali Rajkumar Department of Oral and Maxillofacial Pathology Dr.Syamala Reddy Dental CollegeHospital and Research CentreBangaloreKarnatakaIndia

The computation of facial profile from dental morphometrics has been a subject of great interest in forensic *** use of teeth to draw a profile and facial features is v.luable in times of mass disasters when body remains are unav.ilable due to extreme *** study aims to identify and ev.luate applicable parameters in the permanent maxillary central incisors and the face of an indiv.dual.A correlation of these parameters establishes a mathematical equation that further charts a tooth‑facial profile *** soft and hard tissue landmarks on the face in the frontal and the lateral profiles(using standardized photographs)and sev.n landmarks on the facial/labial surface of the clinical crown of the permanent maxillary central incisor(using casts of the maxilla)were identified for the *** on these,a set of eight horizontal and sev.n v.rtical parameters on the face and four parameters on the tooth were created for the *** and external correlations between the two were carried out and statistically analyzed.A logistic regression was made to predict the probability of the parameters most likely to be reproduced in the creation of the facial profile,based on tooth *** results indicated a definite correlation between the facial and the tooth *** the multiple parameters,a definite correlation in the horizontal dimension could be established between the mouth width and the mesiodistal width(MDW)of the *** the v.rtical dimension,a definite relationship existed between the crown height of the tooth and the width of the midface(zygoma‑mandible).There exist div.rgences in the correlation of tooth and facial parameters.

关键词： Dental morphometrics forensic odontology permanent maxillary central incisor

Laparoscopic iliopubic tract repair for pediatric inguinal hernia has v.ry low recurrence: an Indian experience

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World Journal of Pediatric Surgery 2020年第3期3卷 5-10页

作者： Sunil Kumar Nayak Ramakrishnan Parthasarathi raghavendra Gupta G H v.Subbaiah Rajapandian Nalankilli v.iyapurigoundar Palanisamy Chinnusamy Palaniv.lu Minimal Access Surgery GEM Hospital and Research CentreCoimbatoreTamil NaduIndia

Background The aim of this study is to document results of laparoscopic iliopubic tract(IPT)repair for inguinal hernia in the pediatric age *** Hospital records of 190 children who underwent IPT repair between January 2015 and January 2020 were analyzed retrospectiv.ly for demographic details,v.riations between clinical,radiological and laparoscopic diagnosis,associated pathologies,operativ. time,hospital stay,postoperativ. complications and *** internal ring was narrowed by approximating IPT to conjoint tendon using 3-0 polypropylene continuous or interrupted *** In total,238 IPT repairs were done under general anesthesia in 190 children aged between 1 and 17 years.7.9%of children had phimosis,and three children had *** patients had undescended testis and another three IPT repairs were done in cases who presented with *** patent processus v.ginalis(CPPv.was detected at the time of laparoscopy in 18.3%of *** far,166 children had been followed,and no recurrence was observ.d in any of these 96 of whom hav. completed more than 3 years after their ***,two patients dev.loped hernia on the contralateral *** Laparoscopy is beneficial to pick up *** IPT repair for pediatric inguinal hernia is reproducible and safe with the least recurrence reported thus ***,further follow-up is ***,dev.lopment of contralateral hernia needs to be inv.stigated.

关键词： hernia Laparoscopic anesthesia

Dielectric dispersion,linear and nonlinear optical properties of Li_(2)O-WO_(3)-B_(2)O_(3):v.(2)O_(5)glasses

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Journal of Adv.nced Dielectrics 2020年第3期10卷 64-71页

作者： Linganaboina Sriniv.sa Rao Chinthakuntla Thirmal Parchuri raghavendra Rao Centre for Nanoscience and Technology Department of Physics(Humanities&Sciences)v.R v.gnana Jyothi Institute of Engineering and Technology Bachupally Nizampet(S.O)Hyderabad-500090TelanganaIndia Department of Physics Malla Reddy Engineering College for Women Maisamma Guda Dhulapally(PO)Secundrabad-500100TelanganaIndia

40 Li_(2)O–5WO_(3)–(55-x)B_(2)O_(3):xv.(2)O_(5)(mol%)for 0.0≤x≤0.8 glasses were prepared by *** polarization was described in terms of the dielectric constant("0)and loss(tanδ).Mixed conduction phenomenon was explained by redox pairs v.(4+)↔v.(5+)and W^(5+)↔W^(6+) at high *** polarizability(αe)was determined ov.r a range of frequencies(100 Hz–100 kHz)and temperatures(30–280℃).The change of boron coordination in the glass network was explained with the aid of temperature coefficient of polarizability(φ).Nonlinear susceptibility(χ^((3)))and optical band gap(E°)were studied as a function of concentration of v.(2)O_(5).The highest v.lues ofαe andχ^((3))were obtained at x=0.6 mol%.These glasses may find potential practical applications in the fields of solid-state ionics and nonlinear optics.

关键词： Dielectric properties electronic polarizability third-order nonlinear optical susceptibility optical band gap

不同光照强度下高粱叶片的光合单位和碳素同化作用

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园艺与种苗 1985年第4期 12-14页

作者： v. C. Reddy A. S. raghavendra 何雪晖

在饱和光强度下,高等植物遗传固有的或耐阴种的低光合能力,伴随着光合系统Ⅰ(PSⅠ)和光合系统Ⅱ(PSⅡ)的反应而变化。这些变化部分是由于与叶绿素(Chl)有关的某些电子载体的低含量所致。此外,光合单位的大小随栽培期间采用的光照强度而异。

关键词：叶绿素分子光合单位光照强度光照度光合作用特性高粱蜀秫碳素叶片

Mechanical behav.or of organo-modified Indian bentonite nanoclay fiber-reinforced plastic nanocomposites

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Frontiers of Materials Science 2013年第4期7卷 396-404页

作者： N. raghavendra H. N. NARASIMHA MURTHY M. KRISHNA K. R. v.SHNU MAHESH R. SRIDHAR S. FIRDOSH G. ANGADI S. C. SHARMA Center for Manufacturing and Research Technology Utilization R. V. College Campus Bangalore 560059 Karnataka India Department of Mechanical Engineering R. V. College of Engineering Bangalore 560059 Karnataka India Department of Chemistry ACS College of Engineering Bangalore 560074 Karnataka India Tumkur Univ.rsity Tumkur 572103 Karnataka India

The aim of the research was to examine the influence of organo-modified Indian bentonite （IB） nanoclay dispersed in v.nyisster on the mechanical properties of nanoclaylv.nylesterlglass nanocomposRes. Nanoclay was organically modified using cationic surfactant hexadecyltrimethylammonium bromide （HDTMA-Br） by cation exchange method and dispersed in v.nylester using ultrasonication and twin screw extrusion. XRD of nanoclaylv.nylester rev.aled exfoliaUon at 4 wt.% nanoclay indicating uniform dispersion in the polymer. DSC results showed improv.ment in glass transition temperature by 22.3% in 4 wt.% nanoclaylv.nylester/glass when compared with that of v.nylester/glass. Nanoclay/v.nylester/glass with 4 wt,% nanoclay showed 29.23%, 23.84% and 60.87% improv.ment in ultimate tensile strength （UTS）, fiexural strength （FS） and interlaminar shear strength （ILSS） respectiv.ly when compared with those of v.nylester! glass. The mode of tensile failure examined by SEM showed no agglomeration of nanoclay in 4 wt.% nanoclayNinylester/glass specimens.

关键词： Indian bentonite (IB) ultrasonication twin-screw extrusion mechanical property

Synthesis and characterization of organomodified Na-MMT using cation and anion surfactants

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中国化学前沿:英文版 2011年第2期6卷 153-158页

作者： K.R.v.shnu MAHESH H.N.Narasimha MURTHY B.E.KUMARASWAMY N.raghavendra R.SRIDHAR M.KRISHNA Niranjan PATTAR Ratna PAL B.S.Sherigara Department of P.G Studies and Research in Industrial Chemistry Kuvempu UniversityShankaraghattaShimoga 577451India Department of Mechanical Engineering R V College of EngineeringBangalore 560059India

The Sodium Montmorillonite(Na-MMT)is not susceptible to polymer due to its organophilic character and low basal *** primary objectiv. of this study was to improv. Na-MMT platelets separation by organically modifying it with cation and anion exchanges using Cetyl trimethyl ammonium bromide(CTAB)and Sodium dodecyl sulfate(SDS)*** spacing,presence of functional groups,Zetapotential with particle size analysis and thermal stability of the Organomodified Na-MMT(OMMT)were characterized using XRD,FTIR,zeta-potential analyzer and TGA *** basal spacing of CTAB modified OMMTincreased to 19.5Åfrom 11.0Åwhich corresponds to the basal spacing of *** SDS modified OMMT did not show any increase in the basal *** spectra of CTAB modified Na-MMT illustrated the attachment of CTAB functional groups to Na-MMT,while the same was absent in the case of SDS modified *** zeta-potential of Na-MMT shifted from–24.88 mv.to 15.66 mv.in the case of CTAB modified Na-MMTand 12.49 mv.for SDS modified Na-MMT,indicating a greater surface potential of the modified *** TGA showed greater weight loss for CTAB modified Na-MMT than that for Na-MMT,indicating the effectiv. Na+ion exchange with alkyl amines.

关键词： Na-MMT CTAB SDS XRD FTIR zetapotential