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Current status of the biliary tract malformation

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World Journal of Clinical Pediatrics 2024年第2期13卷 100-103页

作者： Krishna Kumar govindarajan Department of Pediatric Surgery JIPMERPondicherryPondicherry 605006India

The choledochal cyst(CC)can be better termed as biliary tract malformation because of the close association of embryology and etiology in the causation of *** to Babbitt's postulation of reflux,damage and dilatation,reflux was not demonstrable as the causative factor in all varieties of *** pressure in the biliary system,otherwise termed ductal hypertension,is put forth as an alternative to explain the evolution of *** forme fruste type,which does not find a place in the standard classification,typifies the ductal hypertension *** a closer,in-depth review would be able to highlight this apt terminology of biliary tract malformation.

关键词： Choledochal cyst Biliary tract Biliary dilatation Ductal hypertension Common channel Pancreatobiliary malunion

Coherence Based Sufficient Condition for Support Recovery Using Generalized Orthogonal Matching Pursuit

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Computer Systems Science & Engineering 2023年第5期45卷 2049-2058页

作者： Aravindan Madhavan Yamuna govindarajan Neelakandan Rajamohan Department of Electronics and Communication Engineering Annamalai UniversityChidambaram608002Tamil NaduIndia School of Electrical Sciences Indian Institute of TechnologyFarmgudiPondaGoaIndia

In an underdetermined system,compressive sensing can be used to recover the support *** algorithms will recover the support vector indices in an iterative *** Orthogonal Matching Pursuit(GOMP)is the generalized form of the Orthogonal Matching Pursuit(OMP)algorithm where a number of indices selected per iteration will be greater than or equal to *** recover the support vector of unknown signal‘x’from the compressed measurements,the restricted isometric property should be satisfied as a sufficient *** the restricted isometric constant is a non-deterministic polynomial-time hardness problem due to that the coherence of the sensing matrix can be used to derive the sufficient condition for support *** this paper a sufficient condition based on the coherence parameter to recover the support vector indices of an unknown sparse signal‘x’using GOMP has been *** derived sufficient condition will recover support vectors of P-sparse signal within‘P’*** recovery guarantee for GOMP is less restrictive,and applies to OMP when the number of selection elements equals *** shows the superior performance of the GOMP algorithm compared with other greedy algorithms.

关键词： Compressed sensing restricted isometric constant generalized orthogonal matching pursuit support recovery recovery guarantee coherence

Network Traffic Prediction Using Radial Kernelized-Tversky Indexes-Based Multilayer Classifier

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Computer Systems Science & Engineering 2022年第3期40卷 851-863页

作者： M.govindarajan V.Chandrasekaran S.Anitha Department of Computer Applications Velalar College of Engineering and TechnologyErode638012India Department of Electronics and Communication Engineering Velalar College of Engineering and TechnologyErode638012India Department of Information Technology Kongu Engineering CollegePerunduraiIndia

Accurate cellular network traffic prediction is a crucial task to access Internet services for various devices at any *** the use of mobile devices,communication services generate numerous data for every *** the increasing dense population of data,traffic learning and prediction are the main components to substantially enhance the effectiveness of demand-aware resource allocation.A novel deep learning technique called radial kernelized LSTM-based connectionist Tversky multilayer deep structure learning(RKLSTM-CTMDSL)model is introduced for traffic prediction with superior accuracy and minimal time *** RKLSTM-CTMDSL model performs attribute selection and classification processes for cellular traffic *** this model,the connectionist Tversky multilayer deep structure learning includes multiple layers for traffic prediction.A large volume of spatial-temporal data are considered as an input-to-input ***,input data are transmitted to hidden layer 1,where a radial kernelized long short-term memory architecture is designed for the relevant attribute selection using activation function *** obtaining the relevant attributes,the selected attributes are given to the next *** index function is used in this layer to compute similarities among the training and testing traffic *** similarity index outcomes are given to the output *** value is used as basis to classify data as heavy network or normal ***,cellular network traffic prediction is presented with minimal error rate using the RKLSTM-CTMDSL *** evaluation proved that the RKLSTM-CTMDSL model outperforms conventional methods.

关键词： Cellular network traffic prediction connectionist Tversky multilayer deep structure learning attribute selection classification radial kernelized long short-term memory

Geotechnical investigation of low-plasticity organic soil treated with nano-calcium carbonate

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第2期15卷 500-509页

作者： govindarajan Kannan Brendan C.O’Kelly Evangelin Ramani Sujatha Centre for Advanced Research in Environment School of Civil EngineeringSASTRA Deemed to be UniversityThanjavurTamil Nadu613401India Department of Civil Structural and Environmental EngineeringTrinity College DublinDublinD02 PN40Ireland

Soil stabilization using nanomaterials is an emerging research area although,to date,its investigation has mostly been laboratory-based and therefore requires extensive study for transfer to practical field *** present study advocates nano-calcium carbonate(NCC)material,a relatively unexplored nanomaterial additive,for stabilization of low-plasticity fine-grained soil having moderate organic *** plasticity index,compaction,unconfined compressive strength(UCS),compressibility and permeability characteristics of the 0.2%,0.4%,0.6%and 0.8%NCC-treated soil,and untreated soil(as control),were determined,including investigations of the effect of up to 90-d curing on the UCS and permeability *** terms of UCS improvement,0.4%NCC addition was identified as the optimum dosage,mobilizing a UCS at 90-d curing of almost twice that for the untreated *** treated soil,particle aggregation arising from NCC addition initially produced an increase in the permeability coef-ficient,but its magnitude decreased for increased curing owing to calcium silicate hydrate(CSH)gel formation,although still remaining higher compared to the untreated soil for all dosages and curing periods *** index decreased for all NCC-treated soil *** micro-graphs indicated the presence of gel patches along with particle aggregation.X-ray diffraction(XRD)results showed the presence of hydration products,such as *** increases in UCS are initially attributed to void filling and then because of CSH gel formation with increased curing.

关键词： Organic silt Calcium carbonate Nano-calcium carbonate(NCC) Calcium silicate hydrate(CSH) Soil stabilization

Intelligent Financial Fraud Detection Using Artificial Bee Colony Optimization Based Recurrent Neural Network

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Intelligent Automation & Soft Computing 2023年第8期37卷 1483-1498页

作者： T.Karthikeyan M.govindarajan V.Vijayakumar Department of Computer Science and Engineering Annamalai UniversityAnnamalai NagarTamil NaduIndia Department of Computer Science and Engineering Sri Manakula Vinayagar Engineering CollegePuducherryIndia

Frauds don’t follow any recurring *** require the use of unsupervised learning since their behaviour is continually ***-sters have access to the most recent technology,which gives them the ability to defraud people through online *** make assumptions about consumers’routine behaviour,and fraud develops *** learning must be used by fraud detection systems to recognize online payments since some fraudsters start out using online channels before moving on to other *** a deep convolutional neural network model to identify anomalies from conventional competitive swarm optimization pat-terns with a focus on fraud situations that cannot be identified using historical data or supervised learning is the aim of this paper Artificial Bee Colony(ABC).Using real-time data and other datasets that are readily available,the ABC-Recurrent Neural Network(RNN)categorizes fraud behaviour and compares it to the current *** compared to the current approach,the findings demonstrate that the accuracy is high and the training error is minimal in ABC_*** this paper,we measure the Accuracy,F1 score,Mean Square Error(MSE)and Mean Absolute Error(MAE).Our system achieves 97%accuracy,92%precision rate and F1 score 97%.Also we compare the simulation results with existing methods.

关键词： Fraud activity optimization deep learning classification online transaction neural network credit card

Alginate based encapsulation of polyphenols ofPiper betelleaves:Development,stability,bio-accessibility and biological activities

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Food Bioscience 2022年第3期47卷 998-1006页

作者： Ayesha Noor Musa Al Murad A.Jaya Chitra Spoorthy N.Babu S.govindarajan Centre for Bio Separation Technology (CBST) Vellore Institute of Technology (VIT)Vellore632014Tamil NaduIndia

Plant polyphenols have recently gained attention in nutraceutical and pharmaceutical industries due to their various therapeutic ***,the polyphenols are prone to oxidation,unstable towards heat,light,pH and their unpleasant taste also limits their *** usage of encapsulated polyphenols can alleviate these drawbacks and hence,efficient encapsulation methods have been *** present study focused on the synthesis of microspheres of Piper betle polyphenols by extrusion method using alginate and assesses the impact of alginate encapsulation on stability,bioavailability and therapeutic *** of Piper betle were studied for their stability,yield,size,characterized by using SEM for surface morphology and FTIR and evaluated for their bioavailability using in vitro simulated gastrointestinal digestion and therapeutic properties for a period of 24 *** results showed that encapsulation was successful using extrusion technique and the stability was improved as it protected the polyphenols and antioxidant from degradation for a period of 24 *** addition,bioavailability was also increased in small intestine and the antioxidant and antidiabetic properties were better retained after ***,this study showed that encapsulation of polyphenols of Piper betle leaves with alginate improved stability and can be a promising technique for food supplementation/nutraceutical with natural antioxidants.

关键词： Polyphenols Stability Encapsulation Alginate Antioxidant Antidiabetic

Larvicidal and repellent properties of some essential oils against Culex tritaeniorhynchus Giles and Anopheles subpictus Grassi(Diptera:Culicidae)

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Asian Pacific Journal of Tropical Medicine 2011年第2期4卷 106-111页

作者： Marimuthu govindarajan Division of Vector Biology and Phytochemistry Department of ZoologyAnnamalai UniversityAnnamalainagar-608 002Tamil NaduIndia

Objective:To investigate the larvicidal and repellent properties of essential oils from various parts of four plant species Cymbopogan citrates,Cinnamomum zeylanicum,Rosmarinus of ficinalis and Zingiber of ficinale against Culex tritaeniorhynchus（***） and Anopheles subpictus（***）.Methods:Essential oils were obtained by hydro-distillation *** mosquitoes were reared in the vector control laboratory and twenty five late third ins tar larvae of *** and *** were exposed to based on the wide range and narrow range test,essential oil tested at various concentrations ranging from 25 to 250 *** larval mortality was observed after 24 h under the laboratory *** repellent efficacy was determined against two mosquito species at three concentrations viz., 1.0,2.5 and 5.0 mg/cm2 under laboratory ***:Results showed all the four plant essential oil produced significant larval mortality against two mosquito ***,the highest larvicidal activity was observed in the essential oil from Zingiber of ficinale against Cx. tritaeniorhynchus and *** with the LC50 and LC90 values as 98.83,57.98 ppm and 186.55, 104.23 ppm,*** the four essential oil shows significant repellency against Cx. tritaeniorhynchus than *** four essential oil tested the highest repellency was observed in Zingiber of ficinale,a higher concentration of 5.0 mg/cm2 provided 100%protection up to 150 and 180 min against *** and ***,***: In this work,it can be concluded that four essential oils which were distilled from Cymbopogan citrates,Cinnamomum zeylanicum,Rosmarinus of ficinalis and Zingiber of ficinale showed promising larvicidal and repellent agent against *** and ***.

关键词： Cymbopogan citrates Cinnamomum zeylanicum Rosmarinus officinalis Zingiber officinale Essential ois Larvicidal activity Repellent activity Mosquito vectors

Evaluation of Andrographis paniculata Burm.f.(***) extracts against Culex quinquefasciatus(Say.) and Aedes aegypti(Linn.)(Diptera:Culicidae)

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Asian Pacific Journal of Tropical Medicine 2011年第3期4卷 176-181页

作者： Marimuthu govindarajan Division of Vector Biology and Phytochemistry Department of ZoologyAnnamalai UniversityAnnamalainagar-608 002Tamil NaduIndia

Objective:To investigate the larvicidal and ovicidal efficacy of different extracts of Andrographis paniculata（***） against Culex quinquefasciatus（***） Say and Aedes aegypti（*** ） L（Diptera:Culicidae）.Methods:Larvicidal efficacy of the crude leaf extracts of *** with five different solvents like benzene,hexane,ethyl acetate, methanol and chloroform was tested against the early third instar larvae of *** and *** ovicidal activity was determined against two mosquito species to various concentrations ranging from 50-300 ppm under the laboratory ***:The benzene, hexane,ethyl acetate,methanol and chloroform leaf extract of *** was found to be more effective against *** than *** LC50 values were 112.19,137.48, 118.67,102.05,91.20 ppm and 119.58,146.34,124.24,110.12,99.54 ppm *** five tested solvent,methanol and ethyl acetate crude extract was found to be most effective for ovicidal activity against two mosquito *** extract of methanol and ethyl acetate exerted 100%mortality at 200 ppm against *** and at 250 ppm against ***. Conclusions:From the results it can be concluded the crude extract of *** was a potential for controlling *** and *** mosquitoes.

关键词： Andrographis paniculata larvicidal activity Ovicidal activity Culex quinquefasciatus Aedes aegypti

Magnetic susceptibility measurements on metakaolin admixtured cement hydrated with ground water and sea water

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International Journal of Minerals,Metallurgy and Materials 2009年第3期16卷 349-354页

作者： D. govindarajan R. Gopalakrishnan Department of Physics Annamalai University Annamalai Nagar608002 Tamilnadu India

The role of metakaolin in the properties of Portland cement hydrated with ground water and sea water was described by magnetic susceptibility study. Cement pastes containing 0wt%, 10wt%, 20wt% and 30wt% replacement of metakaolin and in a water/cement （W/C） ratio of 0.4 were prepared. The susceptibility at different hydration periods was determined by Faraday Curie balance and it was related to the changes in setting time and compressive strength of admixtured cement. Compared with sea water-treated cement paste, the magnetic susceptibility of ground water-treated cement paste is higher in value. The observed result shows that, irrespective of water, the magnetic susceptibility increases with increasing metakaolin percentage replacement level in cement.

关键词： magnetic susceptibility admixtured cement hydration pozzolanic activity sea water