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Frontiers of Structural and Civil Engineering 2023年第2期17卷 271-283页

作者： Smitha GOPINATH Ramesh GOPAL hemalatha thiyagarajan CSIR-Structural Engineering Research Centre Chennai 600113India

Textile reinforced mortar is widely used as an overlay for the repair,rehabilitation,and retrofitting of concrete ***,textile reinforced concrete has been identified as a suitable lining material for improving the durability of existing concrete *** this study,we developed a textile-reinforced mortar mix using river sand and evaluated the different characteristics of the textile-reinforced mortar under various exposure *** were carried out in two *** the first phase,the pullout strength,temperature resistance,water absorption,and compressive and bending strength values of three different textile-reinforced mortar mixes with a single type of textile reinforcement were *** the second phase,the chemical resistance of the mix that showed the best performance in the abovementioned tests was examined for use as an overlay for a concrete *** were performed on three different thicknesses of the textile reinforced mortar overlaid on concrete specimens that were subjected to acidic and alkaline *** flexural responses and degradations of the textile reinforced mortar overlaid specimens were examined by performing bending *** experimental findings indicated the feasibility of using textile reinforced mortar as an overlay for durable concrete construction practices.

关键词： textile reinforced mortar bending tests acid and alkaline environment concrete overlay

Excellent photoluminescence and electrochemical properties of Sm^(3+) doped Ca_(2)MgSi_(2)O_(7) nanophosphor:Display and electrochemical sensor applications

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Journal of Rare Earths 2024年第6期42卷 1046-1055,I0002页

作者： R.B.Basavaraj K.Sureshkumar D.P.Aarti M.B.Madhusudana Reddy G.Nagaraju T.Ramakrishnappa G.R.Navyashree K.R.Venkatesha Babu K.S.hemalatha Department of Physics BMS Institute of Technology and ManagementBangalore560064India Department of Chemistry BMS Institute of Technology and ManagementBangalore560064India Department of Chemistry School of Applied SciencesREVA UniversityBangalore560064India Energy Materials ResearchLaboratory Department of ChemistrySiddaganga Institute of TechnologyTumakuru57203KarnatakaIndia School of Physical Sciences REVA UniversityBangalore560057Indi Department of Physics Govt.Science CollegeBengaluru560001India Department of Physics Maharani Science College for WomenMaharani Cluster UniversityBengaluru560001India

A series of orange-red light emitting Ca_(2)MgSi_(2)O_(7):Sm^(3+)nanopowders were fabricated via low-cost ecofriendly green combustion technique using Aloe vera gel as *** phase purity of the samples were confirmed by the powder X-ray diffraction(PXRD)*** single-phase tetragonal structure is observed from the PXRD results with no additional impurity *** band gap energy of the fabricated powders was estimated by diffuse reflectance spectra(DRS)and is found to be in the range of 4.01-5.98 eV.A high resolution scanning electron microscope(SEM)was used to study the morphological behaviour of the ***-like structures are observed from the SEM *** particle size was evaluated by transmission electron microscopy(TEM)and is found to be~50 *** interplanar distance is found to be 0.53 *** properties were systematically studied in *** phosphors are successfully excited at 403 nm NUV light,producing reddish-orange characteristic *** emission peaks are centered at 558(^(4)G_(5/2)→^(6)H_(5/2)),607(^(4)G_(5/2)→^(6)H_(7/2))and 645 nm(^(4)G_(5/2)→^(6)H_(9/2)),*** the observed peaks the red emanation(^(4)G_(5/2)→^(6)H_(7/2))is stronger than the orange emission(^(4)G_(5/2)→^(6)H_(5/2))in the current *** photoluminescent concentration quenching is noticed above 5 mol%Sm^(3+)ion doping *** dipole-dipole interaction resulting in cross relaxation is found to be the principal cause of concentration quenching *** color features such as Commission Internationale de I’Eclairage(CIE)and correlated color temperature(CCT)were studied in *** optimized chromaticity coordinates were estimated to be(0.6363,0.3632),which fall in the reddish-orange *** average CCT value obtained is 3362 *** average color purity is found to be~82%.Sm^(3+)incorporated Ca_(2)MgSi_(2)O_(7) samples are possible contender for single white light generation commercial candidates owing to

关键词： Green combustion Photoluminescence Orange-red emission Color purity Sensors Rare earths

Stress enhances expression of calcium-binding proteins and NMDAR subunit genes in the rat hippocampus

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Neuroprotection 2024年第2期2卷 167-178页

作者： Aravind Parthasarathy Ramesha Hanumanthappa Sarojini R.Bulbule Kiran P.C. hemalatha Nanjaiah Gopinath G. Siddaiah B.M. David Muniswamy Devaraju Kuramkote Shivanna Neurochemistry Lab Department of BiochemistryKarnatak UniversityDharwadIndia Department of Microbiology and Immunology University of Maryland School of MedicineBaltimoreMarylandUSA Department of Zoology Karnatak UniversityDharwadIndia

Backgrounds:Oxidative stress impairs the function of calcium-binding proteins and deregulates calcium signaling in living *** have previously explored the overexpression of calcium-binding protein genes in a reactive oxygen and nitrogen species-induced in vitro cell model of stress that leads to ***,in in vivo models,low levels of stress leads to depressive-like ***,we aimed to analyze gene expression of major calcium-binding proteins(calcineurin,calmodulin,calsyntenin,synaptotagmin,and calreticulin)and N-methyl-D-aspartic acid(NMDA)receptor subunits(glutamate receptor ionotropic[GluN]GluN1,GluN2A,and GluN2B)in the hippocampus of stress-induced ***:Six-week-old male Wistar rats were assigned to two stress induction groups and a control group without stress(n=6).Stress was induced by using H_(2)O_(2)(3%in water)or by immobilization(using a sticky mat)over a period of 30 *** of calcium-binding protein genes in the hippocampus,antioxidant assays,structural alterations in hippocampal neurons,and depressive-like behavior were ***:Expression of genes encoding calcium-binding proteins calcineurin,calsyntenin,synaptotagmin and NMDA receptor subunit GluN1 was enhanced in both chemical and physical stress-induced rats compared with control rats(4.25±0.05 vs.1.03±0.02,p<0.05,2.05±0.08vs.1.03±0.02,p<0.005;2.2±0.4 vs.1.02±0.03,p<0.05,1.98±0.07 vs.1.02±0.03,p<0.005;1.4±0.6 vs.1.15±0.09,p<0.05,1.39±0.05 vs.1.15±0.09,p<0.005),*** stress-induced rats,neurons in the CA2 region of the hippocampus were fewer and appeared disorganized compared with control ***,stressinduced rats showed decreased mobility and lower sucrose preference in behavioral studies compared with control ***:Lower levels of reactive oxygen and nitrogen species(RONS)can also lead to stress in rats by affecting their calcium signaling,buffering capacity in the neurons leading to depressive symptoms.

关键词： calcineurin H_(2)O_(2) hippocampus immobilization NMDA receptors

Efficient Crack Severity Level Classification Using Bilayer Detection for Building Structures

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Computer Systems Science & Engineering 2023年第7期46卷 1183-1200页

作者： M.J.Anitha R.hemalatha Department of Electronics and Communication Engineering Central Polytechnic CollegeChennai600113India Department of Electronics and Communication Engineering Sri Sivasubramaniya Nadar College of EngineeringChennai603110India

Detection of cracks at the early stage is considered as very constructive since precautionary steps need to be taken to avoid the damage to the civil ***,identifying and classifying the severity level of cracks is inevitable in order to find the stability of ***,this paper proposes an efficient strategy to classify the cracks into fine,medium,and thick using a novel bilayer crack detection *** bilayer crack detection algorithm helps in extracting the requisite features from the crack for efficient *** proposed algorithm works well in the dark background and connects the discontinued cracks *** first layer is used to detect cracks under texture variations and manufacturing defects,through segmented adaptive thresholding and morphological *** residual noise present in the output of the first layer is removed in the second layer of crack *** second layer includes the double scan and the noise reduction algorithms and is used to join the missed crack *** a result,a segmented crack is *** classification is done using an ensemble classifier with bagging,and decision tree techniques by extracting the geometrical features and the weaker crack criterion from the segmented *** results of the proposed technique are compared with the existing techniques for different datasets and have obtained a rise in True Positive Rate(TPR),accuracy and precision *** proposed technique is also implemented in Raspberry Pi for further real-time evaluation.

关键词： Crack detection image processing adaptive thresholding emeasure accuracy classifier

Harmonics Extraction Scheme for Power Quality Improvement Using Chbmli-Dstatcom Module

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Intelligent Automation & Soft Computing 2023年第2期35卷 1505-1525页

作者： R.hemalatha M.Ramasamy Anna University ChennaiTamil NaduIndia K.S.R.College of Engineering TiruchengodeTamil NaduIndia

In recent day’s power distribution system is distress from acute power quality *** this work,for compensating Power Quality(PQ)disturbances a seven level cascaded H-bridge inverter is implemented in distribution static com-pensator which protects power quality problems in *** Static Compensator(DSTATCOM)aid to enhances power factor and removes total har-monic distortion which is drawn from non-linear *** D–Q reference theory based hysteresis current controller is employed to generate reference current for compensation of harmonics and reactive power,additionally Probabilistic Neural Network(PNN)classiﬁer is used which easily separates exact *** the meantime fuzzy logic controller is also used to maintain capacitor DC-link *** comparing to PI controller it decreases steady state time and reduces maximum peak *** H-bridge multilevel inverter converts direct current to Alternating current,through inductor opposite harmonics are injected in Power Control Centre reduces source current harmonics and reactive *** implementation of CHBMLI in distribution STATic COMpensator simulation model is simulated by means of MATLAB.

关键词： CHBMLI distribution STATic COMpensator(DSTATCOM) probabilistic neural network(PNN) PI(proportional–integral) fuzzy logic control(FLC) total harmonic distortion(THD)

Hydrocephalic cerebrospinal fluid flowing rotationally with pulsatile boundaries:A mathematical simulation of the thermodynamical approach

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Theoretical & Applied Mechanics Letters 2023年第1期13卷 79-86页

作者： hemalatha Balasundaram Senthamilselvi Sathyamoorthi Unai Fernandez-Gamiz Samad Noeiaghdam Shyam Sundar Santra Department of Mathematics VISTASVels UniversityZamin PallavaramChennaiTamilnadu Nuclear Engineering and Fluid Mechanics Department University of the Basque Country UPV/EHUNieves Cano 1201006Vitoria-GasteizSpain Industrial Mathematics Laboratory Baikal School of BRICSIrkutsk National Research Technical UniversityIrkutsk664074Russia Department of Applied Mathematics and Programming South Ural State UniversityLenin prospect 76Chelyabinsk454080Russia Department of Mathematics Applied Science ClusterUniversity of Petroleum and Energy StudiesDehradunUttarakhand248007India Department of Mathematics JIS College of EngineeringKalyaniWest Bengal 741235India

To study the kinematics of flow rate and ventricular dilatation,an analytical perturbation approach of hydrocephalus has been *** research provides a comprehensive investigation of the characteristics of cerebrospinal fluid(CSF)flow and pressure in a hydrocephalic *** influence of hydrocephalic CSF,flowing rotationally with realistic dynamical characteristics on pulsatile boundaries of subarachnoid space,was demonstrated using a nonlinear controlling system of *** analytical perturbation method of hydrocephalus has been developed to investigate the biomechanics of fluid flow rate and the ventricular *** this paper presents a detailed analysis of CSF flow and pressure dynamics in a hydrocephalic *** was elaborated with a nonlinear governing model of CSF to show the influence of hydrocephalic CSF,flowing rotationally with realistic dynamical behaviors on pulsatile boundaries of subarachnoid *** accordance with the suggested model,the elasticity factor changes depending on how much a porous layer,in this case the brain parenchyma,is *** was improved to include the relaxation of internal mechanical stresses for various perturbation orders,modelling the potential plasticity of brain *** initial geometry that was utilised to create the framework of CSF with pathological disease hydrocephalus and indeed the output of simulations using this model were compared to the actual progression of ventricular dimensions and shapes in *** to this observation,the non-linear and elastic mechanical phenomena incorporated into the current model are probably *** modelling of ventricular dilation at a normal pressure may benefit from the existence of a valid model whose parameters approximate genuine mechanical characteristics of the cerebral cortex.

关键词： Brain parenchyma Cerebrospinal fluid Hydrocephalus Ventricular elasticity Intracranial pressure differences

Unveiling the redox electrochemistry of 1D,urchin-like vanadium sulfide electrodes for high-performance hybrid supercapacitors

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Journal of Energy Chemistry 2023年第4期79卷 569-580页

作者： K.Karuppasamy Dhanasekaran Vikraman Sajjad Hussain Balamurugan Thirumalraj P.Santhoshkumar hemalatha Parangusan Hyun-Chang Park Jongwan Jung Hyun-Seok Kim Division of Electronics and Electrical Engineering Dongguk University-SeoulSeoul 04620Republic of Korea Department of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul 05006Republic of Korea School of Materials Science&Engineering Kookmin UniversitySeoul 02707Republic of Korea Millimeter-Wave Innovation Technology Research Center(MINT) Dongguk University-SeoulSeoul 04620Republic of Korea Qatar University Young Scientist Center(QUYSC) Qatar UniversityP.O.Box 2713DohaQatar

Exploring novel versatile electrode materials with outstanding electrochemical performance is the key to the development of advanced energy conversion and storage *** this work,we aim to construct new-fangled one-dimensional(1D)quasi-layered patronite vanadium tetrasulfide(VS_(4))nanostructures by using different sulfur sources,namely thiourea,thioacetamide,and L-cysteine through an ethyleneaminetetraacetic-acid(EDTA)-mediated solvothermal *** as-prepared VS4exhibits several unique morphologies such as urchin,fluffy nanoflower,and polyhedron with appropriate surface *** the prepared nanostructures,the VS_(4)-1@NF nanostructure exhibited excellent electrochemical properties in 6 M KOH solution,and we explored its redox electrochemistry in *** asprepared VS_(4)-1@NF electrode exhibited battery-type redox characteristics with the highest capacity of280 C g^(-1)in a three-electrode ***,it offered a capacity of 123 F g^(-1)in a hybrid twoelectrode set-up at 1 A g^(-1)with the highest specific energy and specific power of 38.5 W h kg^(-1)and750 W kg^(-1),***,to ensure the practical applicability and real-world performance of the prepared hybrid AC@NF//VS_(4)-1@NF cell,we performed a cycling stability test with more than 5,000galvanostatic charge–discharge cycles at 2 A g^(-1),and the cell retained around 84.7%of its capacitance even after 5,000 cycles with a CE of 96.1%.

关键词： Patronite Redox electrochemistry Urchin VS_(4) 1D material Mesoporous

Faster Region Based Convolutional Neural Network for Skin Lesion Segmentation

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Intelligent Automation & Soft Computing 2023年第5期36卷 2099-2109页

作者： G.Murugesan J.Jeyapriya M.hemalatha S.Rajeshkannan Department of Computer Science and Engineering St.Joseph’s College of EngineeringChennaiTamil NaduIndia Department of Computer Science and Engineering B.S.Abdur Rahman Crescent Institute of Science and TechnologyChennaiTamil NaduIndia Department of Artificial Intelligence and Data Science Saveetha Engineering College(Autonomous)ChennaiTamil NaduIndia Department of Electronics and Communication Engineering St.Joseph’s College of EngineeringChennaiTamil NaduIndia

The diagnostic interpretation of dermoscopic images is a complex task as it is very difﬁcult to identify the skin lesions from the *** the accurate detection of potential abnormalities is required for patient monitoring and effec-tive *** this work,a Two-Tier Segmentation(TTS)system is designed,which combines the unsupervised and supervised techniques for skin lesion *** comprises preprocessing by the medianﬁlter,TTS by Colour K-Means Clustering(CKMC)for initial segmentation and Faster Region based Con-volutional Neural Network(FR-CNN)for reﬁned *** CKMC approach is evaluated using the different number of clusters(k=3,5,7,and 9).An inception network with batch normalization is employed to segment mel-anoma regions *** loss functions such as Mean Absolute Error(MAE),Cross Entropy Loss(CEL),and Dice Loss(DL)are utilized for perfor-mance evaluation of the TTS *** anchor box technique is employed to detect the melanoma region *** TTS system is evaluated using 200 dermoscopic images from the PH2 *** segmentation accuracies are analyzed in terms of Pixel Accuracy(PA)and Jaccard Index(JI).Results show that the TTS system has 90.19%PA with 0.8048 JI for skin lesion segmentation using DL in FR-CNN with seven clusters in CKMC than CEL and MAE.

关键词： Skin cancer melanoma diagnosis clustering convolution neural network unsupervised segmentation deep learning

Identified Analytical Profile for Microelements, Trace Metals, Amino Acids and Screening of Anti-Diabetic Activity from Flower and Leaf Extracts of Moringa oleifera in Streptozotocin (STZ)-Induced Diabetic Rats

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Pharmacology & Pharmacy 2022年第6期13卷 149-163页

作者： hemalatha Kamurthy Sirajunisa Talath Department of Pharmacognosy Acharya & BM Reddy College of Pharmacy Bangalore India Department of Pharmaceutical Chemistry RAK College of Pharmacy RAKMHSU Ras Al Khaimah UAE

Background: Moringa oleifera plant is popularly known for its rich phytoconstituents and nutritional value and important medicinal values in both traditional and modern systems of medicine. We explored the present study for measurements of microelements, amino acid, phenolic content in hydro-al-coholic flower and leaf extracts of Moringa oleifera along with anti-diabetic activity in Streptozotocin (STZ)-induced diabetic male Wistar rats. Methodology: The micronutrients were determined by using atomic absorption spectrophotometer at 285 nm and 422 nm for Calcium (Ca), phosphorus (P), Iron (Fe), and Zinc (Zn), etc. The trace elements were also measured by spectrophotometer. The essential amino acid was determined by using Amino acid analyser. The total phenolic content in hydro-alcoholic extracts (flower and leaf) M. oleifera measured the absorbance at 760 nm by UV spectrophotometer. The screening of anti-diabetic activity HAFE and HALE of Moringa oleifera at two different dose of 100 and 200 mg/kg b.w. for 21 days were performed by determining the changes in biochemical parameters. Result and Discussion: The results revels that the presence of micronutrients, trace elements and amino acids in both flower and leaf of M. oleifera. The hydrolaocholic extracts of HAFE and HALE at 200 mg/kg b.w. showed significant antidiabetic activity compared with standard Glibenclamide. Whereas dose at 100 mg/kg b.w. showed moderate activity. Conclusion: In conclusion, the M. oleifera exhibits more effectiveness against STZ-induced diabetes. The HAFE and HALF extracts exhibited significant anti-diabetic property and active components may be isolated and clinical studies is required for further evaluation. Because of the rich source of phytoconstients, nutritional elements will be helpful in processed food products as dietary supplements especially for malnutrition in children in the current era.

关键词： Moringa oleifera Microelements Nutritional Values Gallic Acid Amino Acids Streptozotocin Glibenclamide

Synthesis and screening of some novel substituted indoles contained 1,3,4-oxadiazole and 1,2,4-triazole moiety

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Chinese Chemical Letters 2013年第2期24卷 127-130页

作者： hemalatha Gadegoni Sarangapani Manda Jayamukhi College of Pharmacy Narsampet University College of Pharmaceutical Sciences.Kakatiya University

Received 21- August 2012 Received in revised form 13 December 2012 Accepted 20 December 2012 Available online 5 February 2013

关键词： 1 3 4-Oxadiazols1 2 4-TriazolsAntimicrobial activityAnti-inflammatory