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Journal of Integrative Nursing 2024年第3期6卷 150-154页

作者： Deepak ANIL M.RAKESH Shabeena AKBAR Vijaylakshmi Rao VADAGA D.Sunil kumar Department of Community Medicine JSS Medical CollegeJSS Academy of Higher Education and ResearchMysoreKarnatakaIndia

Objectives:the objective of this study is to assess the handgrip strength(HGS)in patients with type 2 diabetes,compare it with nondiabetes age-matched individuals,and assess the correlation between diabetic status and HGS among diabetic *** and Methods:A community-based cross-sectional study was conducted in rural Mysore,India,for 4 ***-eight clinically diagnosed type 2 diabetics and 58 nondiabetics participated in the *** handheld dynamometer was used to test the HGS of all subjects in their dominant *** t-test was used to analyze the differences in HGS between patients with and without ***:the mean dynamometer reading among diabetics was 19.08±7.51,whereas that in nondiabetics was 27.474±*** was a significant difference in HGSs between diabetics and nondiabetics(Ptrength and quality in the upper extremities are associated with type 2 diabetes and can lead to functional and physical *** patients’HGS should be evaluated promptly to identify any disabilities and plan for appropriate therapy.

关键词： Diabetics dynamometer handgrip muscle strength

Serum Zinc and Copper Level in Juvenile Idiopathic Arthritis (JIA) Patients and Its Correlation with Disease Duration-A tertiary Hospital Study

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Open Journal of Rheumatology and Autoimmune Diseases 2024年第2期14卷 60-68页

作者： Mohammad Imnul Islam Mujammel Haque tanzida Sultana Mousumi Ahmed Mohammed Mahbubul Islam Kamrul Laila Manik kumar talukder Department of Paediatrics Bangabandhu Sheikh Mujib Medical University (BSMMU) Dhaka Bangladesh

Background: Juvenile Idiopathic Arthritis (JIA) is the most prevalent rheumatic disease in children. It is associated with abnormal levels of serum zinc (Zn) and copper (Cu) as during inflammation serum copper concentration increases and zinc decreases. Objective: to assess the serum Zn and Cu levels in different sub-types of JIA patients and their correlation with the disease duration. Methods: this cross-sectional study was conducted over twelve months at the Pediatric Rheumatology Division, Department of Paediatrics, Bangabandhu Sheikh Mujib Medical University. Sixty-nine JIA cases that fulfilled the International League of Association for Rheumatology (ILAR) criteria were taken as cases and age and sex-matched healthy children were considered as controls. the serum Zn and Cu tests were done using the spectrophotometric method with INDIKO PLUS Drug Analyzer. Data were recorded in a pre-designed questionnaire. Data were checked, verified and analyzed manually where continuous variables were analyzed using unpaired t-test and categorical variables using the ANOVA test. Pearson’s correlation coefficient test was used to see the correlation of serum zinc and copper levels with disease duration. Results: Boys were predominant in both case and control groups, with the majority within the 10 to 16-year-age group. Enthesitis-related arthritis (ERA) was the most common subtype followed by sJIA, Oligo JIA, Poly JIA (RF-) and unclassified subtypes. Disease duration was found less than 12 months in 30.4% of JIA patients. Serum analysis revealed a statistically significant reduction in mean zinc levels and increased copper levels in JIA patients compared to controls. this study observed a negative correlation between serum zinc levels and disease duration, whereas serum copper levels exhibited a positive correlation with disease duration. Conclusion: In conclusion, this study revealed that JIA patients exhibit alterations in serum zinc and copper levels. Serum copper levels s

关键词： Copper Juvenile Idiopathic Arthritis Zinc

Skin Lesion Classification System Using Shearlets

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Computer Systems Science & Engineering 2023年第1期44卷 833-844页

作者： S.Mohan kumar t.Kumanan Department of Computer Science and Engineering Meenakshi Academy of Higher Education and ResearchChennai600078Tamil NaduIndia

the main cause of skin cancer is the ultraviolet radiation of the *** spreads quickly to other body ***,early diagnosis is required to decrease the mortality rate due to skin *** this study,an automatic system for Skin Lesion Classification(SLC)using Non-Subsampled Shearlet transform(NSSt)based energy features and Support Vector Machine(SVM)classifier is ***,the NSSt is used for the decomposition of input skin lesion images with different directions like 2,4,8 and *** the NSSt’s sub-bands,energy fea-tures are extracted and stored in the feature database for *** classifier is used for the classification of skin lesion *** dermoscopic skin images are obtained from PH^(2) database which comprises of 200 dermoscopic color images with melanocytic *** performances of the SLC system are evaluated using the confusion matrix and Receiver Operating Characteristic(ROC)*** SLC system achieves 96%classification accuracy using NSSt’s energy fea-tures obtained from 3^(rd) level with 8-directions.

关键词： Skin lesion classification non-subsampled shearlet transform sub-band coefficients energy feature support vector machine

Bioactivity enhancement by Sr doped Zn-Ca-P coatings on biomedical magnesium alloy

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Journal of Magnesium and Alloys 2019年第4期7卷 584-596页

作者： P.Amaravathy t.S.Sampath kumar Medical Materials Laboratory Department of Metallurgical and Materials EngineeringIndian Institute of Technology MadrasChennai 600036India

the effect of strontium doped Zn-Ca-P(ZCP)coating by chemical conversion technique on the biodegradation of AZ31 alloy was *** coating formed with 1.5 wt.%Sr and 20 min phosphating time at 50℃ with pH 2.5 completely covers the alloy *** Sr doped coated sample also showed very low evolved hydrogen gas and pH change than the ZCP coatings suggested that the degradation of the alloy was extremely *** in vitro bioactivity studies in simulated body fluid exhibits deposition of calcium phosphate phases with Ca/P ratio of 1.55 which is close to that of hydroxyapatite,mineral component of *** evaluation with L929 cells showed higher cell viability of the Sr doped coatings compared to ZCP coatings.

关键词： Magnesium alloy Zinc calcium phosphate Biocompatibility Corrosion Strontium Cell viability

Multilevel Augmentation for Identifying thin Vessels in Diabetic Retinopathy Using UNEt Model

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Intelligent Automation & Soft Computing 2023年第2期35卷 2273-2288页

作者： A.Deepak kumar t.Sasipraba Faculty of Computer Science and Engineering Sathyabama Institute of Science and TechnologyChennai600119India Department of Computer Science and Engineering St.Joseph’s Institute of TechnologyChennai600119India

Diabetic Retinopathy is a disease,which happens due to abnormal growth of blood vessels that causes spots on the vision and vision *** techniques are applied to identify the disease in the early stage with different methods and *** Learning(ML)techniques are used for analyz-ing the images andﬁnding out the location of the *** restriction of the ML is a dataset size,which is used for model *** problem has been overcome by using an augmentation method by generating larger datasets with multidimensional *** models are using only one augmentation tech-nique,which produces limited features of dataset and also lacks in the association of those data during DR detection,so multilevel augmentation is proposed for *** proposed method performs in two phases namely integrated aug-mentation model and dataset correlation(***).It eliminates overﬁt-ting problem by considering relevant *** method is used for solving the Diabetic Retinopathy problem with a thin vessel identiﬁcation using the UNEt *** based image segmentation achieves 98.3%accuracy when com-pared to RV-GAN and different UNEt models with high detection rate.

关键词： Image segmentation diabetic retinopathy image augmentation semantic segmentation CNN

I-Quiz:An Intelligent Assessment tool for Non-Verbal Behaviour Detection

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Computer Systems Science & Engineering 2022年第3期40卷 1007-1021页

作者： B.t.Shobana G.A.Sathish kumar Department of Information technology Sri Venkateswara College of EngineeringSriperumbudur602117India Department of Electronics and Communication Engineering Sri Venkateswara College of EngineeringSriperumbudur602117India

Electronic learning(e-learning)has become one of the widely used modes of pedagogy in higher education today due to the convenience and flexibility offered in comparison to traditional learning *** in Information and Communication technology have eased learner connectivity online and enabled access to an extensive range of learning materials on the World Wide *** covid-19 pandemic,online learning has become the most essential and inevitable medium of learning in primary,secondary and higher *** recent times,Massive Open Online Courses(MOOCs)have transformed the current education strategy by offering a technology-rich and flexible form of online learning.A key component to assess the learner’s progress and effectiveness of online teaching is the Multiple Choice Question(MCQ)assessment in most of the MOOC *** exists on the reliability and validity of the assessment component as it raises a qualm whether the real knowledge acquisition level reflects upon the assessment *** is due to the possibility of random and smart guesses,learners can attempt,as MCQ assessments are more vulnerable than essay type *** paper presents the architecture,development,evaluation of the I-Quiz system,an intelligent assessment tool,which captures and analyses both the implicit and explicit non-verbal behaviour of learner and provides insights about the learner’s real knowledge acquisition *** I-Quiz system uses an innovative way to analyse the learner non-verbal behaviour and trains the agent using machine learning *** intelligent agent in the system evaluates and predicts the real knowledge acquisition level of learners.A total of 500 undergraduate engineering students were asked to attend an on-Screen MCQ assessment test using the I-Quiz system comprising 20 multiple choice questions related to advanced C *** non-verbal behaviour of the learner is recorded using a front-facing camera during t

关键词： E-Learning adaptive and intelligent e-learning systems intelligent tutoring systems emotion recognition non-verbal behaviour knowledge acquisition level

A review on recent advancements in biodegradable Mg-Ca alloys

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Journal of Magnesium and Alloys 2022年第8期10卷 2094-2117页

作者： Manas Ranjan Sahu t.S.Sampath kumar Uday Chakkingal Department of Metallurgical and Materials Engineering Indian Institute of Technology MadrasChennai 600036India

the binary Mg-Ca alloys are drawing increasing attention as temporary implant materials because of their excellent biocompatibility,biodegradability, and good mechanical properties. However, their applications are limited due to their high degradation rates in the human physiological environment, the consequent release of hydrogen gas, and rapid loss in mechanical properties. Furthermore, biocompatibility depends upon the degradability of the material. Various researchers have demonstrated that these issues can be addressed by control of Ca content, thermo-mechanical processing to obtain suitable microstructures, deposition of surface coatings, etc. In this manuscript, a detailed review of published literature on Mg-Ca alloys is presented. the challenges and future directions of research in this area are also described.

关键词： Mg-Ca alloy Degradation temporary implant Biocompatibility

Optimizing pulsed current gas tungsten arc welding parameters of AA6061 aluminium alloy using Hooke and Jeeves algorithm

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中国有色金属学会会刊：英文版 2008年第5期18卷 1028-1036页

作者： S.BABU t.SENtHIL kumar V.BALASUBRAMANIAN Centre for Materials Joining Research (CEMAJOR) Department of Manufacturing EngineeringAnnamalai UniversityAnnamalai Nagar-608 002Tamil NaduIndia Department of Automobile technology Bharathidasan Institute of TechnologyAnna UniversityTiruchirappalli-620 016Tamil NaduIndia

though the preferred welding process to weld aluminium alloy is frequently constant current gas tungsten arc welding (CCGtAW),it resulted in grain coarsening at the fusion zone and heat affected zone(HAZ).Hence,pulsed current gas tungsten arc welding(PCGtAW) was performed,to yield finer fusion zone grains,which leads to higher strength of AA6061 (Al-Mg-Si) aluminium alloy *** order to determine the most influential control factors which will yield minimum fusion zone grain size and maximum tensile strength of the joints,the traditional Hooke and Jeeves pattern search method was *** experiments were carried out based on central composite design with 31 runs and an algorithm was developed to optimize the fusion zone grain size and the tensile strength of pulsed current gas tungsten arc welded AA6061 aluminium alloy *** results indicate that the peak current (Ip) and base current (IB) are the most significant parameters,to decide the fusion zone grain size and the tensile strength of the AA6061 aluminum alloy joints.

关键词：脉冲电流钨电极惰性气体保护焊铝合金颗粒尺寸

A novel PV array configuration for enhancing maximum power from PV array

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Clean Energy 2022年第6期6卷 817-826页

作者： Dharani kumar Narne t.A.Ramesh kumar Rama Koteswara Rao Alla Department of Electrical Engineering Annamalai UniversityAnnamalai NagarChidambaramTamilnadu-608002India Department of Electrical and Electronics Engineering RVR&JC College of EngineeringGunturAndhra Pradesh-522019India

Partial shading conditions(PSC)are unavoidable and are the main reason for the reduction in power from a photovoltaic(PV)*** proper arrangement,the impact of PSC can be somewhat *** are distinct types of configurations,including series,parallel,series-parallel(SP),honeycomb,total cross-tied(tCt),*** article presents a novel SP-tCt configuration to maximize output power from PV panels under different shading *** proposed configuration performance has been examined considering a 4×4 PV array under long-narrow and long-wide,short-narrow,short-wide and uniform shading *** results of the proposed configurations are compared with existing configurations in terms of performance measures such as maximum power,fill factor,efficiency and mismatch *** all the cases,performance of the proposed configuration is nearer to the tCt configuration *** percentage improvement in terms of efficiency for the proposed novel SP-tCt configuration and tCt configuration is nearly 1.6%compared to other methods.

关键词： maximum power shading patterns PV array efficiency

Effect of samarium doping on structural, optical and magnetic properties of vertically aligned ZnO nanorod arrays

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Journal of Rare Earths 2017年第10期35卷 1002-1007页

作者： D.Ranjith kumar K.S.Ranjith L.R.Nivedita R.t.Rajendra kumar Department of Nanoscience and technology Bharathiar University Coimbatore India Advanced Materials and Devices Laboratory (AMDL) Department of Physics Bharathiar University Coimbatore India

Samarium doped vertically aligned one dimensional ZnO nanorod（NR） arrays were grown by vapor phase transport（VPt） method through vapor solid（VS） growth process. Influence of different concentrations（0% to 8%） of Sm（all Sm contents in the paper are in mass fraction） on the ZnO NR arrays were investigated by X-ray diffraction（XRD）, field emission scanning electron microscopy（FESEM）, photoluminescence（PL）, Raman spectroscopy and vibrating sample magnetometry（VSM） techniques, respectively. X-ray diffraction studies revealed that the ZnO NR arrays were perfectly oriented along（002） crystallographic orientation with wurtzite crystal structure. Photoluminescence results showed an increase in oxygen vacancies due to increase in Sm doping. M-H curves revealed enhanced ferromagnetic behavior, and the magnetic moment values were 0.45, 0.363, 1.694, 3.613 and 2.197 emu/cm^3 for（0–8%） Sm doped ZnO NR arrays respectively. the curve revealed that paramagnetic behavior was observed for undoped ZnO NR arrays and on increasing the Sm dopant to 4%, paramagnetic switched to ferromagnetic behavior.

关键词： Sm doped ZnO room temperature ferromagnetism(RtFM) defects rare earths