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Chinese Journal of Chemical Engineering 2020年第3期28卷 913-922页

作者： sudha G. Parthiban R. Department of Chemical Engineering Sri Venkateswara College of EngineeringPennalurTamilnadu 602117India Department of Chemical Engineering SSN College of EngineeringKalavakkamTamilnadu 603110India

An attempt is made to examine the effect of hybrid nanocoolant in microchannel heat sink for computer ***-hybrid coolants with graphene as one of the prime components are synthesized and images of the particles are shown using scanning electron microscopy(SEM)and transmission electron microscopy(TEM).Heat transfer properties like thermal conductivity of the hybrid fluid,specific heat,density,and viscosity are evaluated experimentally and *** heat transfer characteristics are also studied in heat sink channels of micro level in the processors of personal *** parameters like internal heat transfer coefficient,thermal resistances and base temperature representing the processor temperature are examined for the applied heater power of 325 *** coolant dilution was varied in the range of 0.05 vol%,0.075 vol%and 0.1 vol%and the base temperature is *** recorded lowest base temperature is 310.01 K for the concentration of 0.1 vol%graphene-iron oxide(GFO)system for 0.5 mm fin spacing for the graphene-iron oxide hybrid coolant and for graphene oxide–iron oxide(GOFO)hybrid coolant it is 311.24 K for the same operating conditions.

关键词： Graphene hybrid nanocoolant Microchannel CPU base temperature

Thermal Entanglement in a Two-Qubit Ising Chain Subjected to Dzyaloshinsky–Moriya Interaction

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Chinese Physics Letters 2013年第12期30卷 5-8页

作者： B.G.Divyamani sudha Department of Physics Kuvempu UniversityShankaraghattaShimoga-577451India Tunga Mahavidyalaya TirthahalliShimoga-577451India Inspire Institute Inc. AlexandriaVirginia22303USA

Thermal entanglement of a two-qubit Ising chain subjected to an external magnetic field and Dzyaloshinsky–Moriya(DM)interaction is *** effect of magnetic field,strength of DM interaction and temperature are analyzed by adopting negativity of partial transpose as the measure of *** is shown that when the DM interaction along the Ising axis is considerable,thermal entanglement can be sustained for a higher *** usefulness of longitudinal DM interaction over the one that is perpendicular to the Ising axis,in the manipulation and control of entanglement at a feasible temperature,is illustrated.

关键词： temperature Ising interaction

Triheterocyclic Thiadiazepine Derivatives of Pharmacological Interest： Synthesis of 2-Aryl-4-[ρ-（2,3-dihydro-5-methyl-2-oxo-1,3,4-oxadiazol-3-yl）phenyl]-6-（u n）su bstituent-1 ＂,2＂ ,4＂- triazolo[3＂,4＂-b]-1 ＇,3＇,4＇-thiadiazepine

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Chinese Journal of Chemistry 2006年第1期24卷 129-134页

作者： KAMBLE, Ravindre sudha, Belagur Department of Chemistry and Food Science Yuvaraja' s College University of Mysore Mysore 570005 India

Synthesis of novel thiadiazepine derivatives based on the reactivity of 4-acetylphenylsydnone （1） was reported. The structures of the newly synthesized compounds have been proved by their physical, analytical, IR, 1... 详细信息

关键词： 4-acetylphenylsydnone 1,3-dipolar cycloaddition 1,3,4-thiadiazepine 1,2,4-triazole 1,3,4-oxadiazoline triheterocycle ring closure condensation Michael addition cardiovascular agent

Comparative analysis of entanglement measures based on monogamy inequality

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Chinese Physics B 2017年第5期26卷 52-59页

作者： P J Geetha sudha K S Mallesh Department of Physics Kuvempu University Shankaraghatta Shimoga-577 451 India Inspire Institute Inc. Alexandria Virginia 22303 USA Department of Studies in Physics University of Mysore Mysore-570 006 India

We evaluate the monogamy inequality for symmetric, non-symmetric pure states of importance in terms of squared concurrence, squared entanglement of formation, squared negativity of partial transpose and compare the corresponding tangles. We show that though concurrence and concurrence tangle are zero for two special classes of mixed entangled states, both negativity tangle and entanglement of formation（EOF） tangle turn out to be non-zero. A comparison of different tangles is carried out in each case and it is shown that while the concurrence tangle captures the genuine multiqubit entanglement in N-qubit pure states with N distinct spinors（containing GHZ and superposition of W-, obverse W states）either negativity tangle or EOF tangle is to be used as a better measure of entanglement in the W-class of states with two distinct spinors and in the special classes of mixed multiqubit states.

关键词： entanglement tangle negativity superposition inequality entangled symmetric vanishing squared arbitrary

Green-synthesized gold nanoparticles from Plumeria alba flower extract to augment catalytic degradation of organic dyes and inhibit bacterial growth

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Particuology 2016年第1期14卷 78-86页

作者： Rani Mata Aswathy Bhaskaran sudha Rani Sadras Department of Biochemistry and Molecular Biology School of Life Sciences Pondicherry University Pondicherry 605014 India

Bio-inspired eco-friendly gold nanoparticles were synthesized by a green method using aqueous Plume- ria alba flower extract （PAFE）. The use of 1% and 5% concentrations of PAFE resulted in two different sizes of P. alba gold nanoparticles, PAGNPsl and PAGNPs2, with surface plasmon resonance （SPR） peaks at 552 and 536 nm, respectively. Size-controlled formation of gold nanoparticles was indicated by the SPR shift observed with increasing concentration of PAFE. The accurate size and morphology of PAGNPs I and PAGNPs2 were determined by transmission electron microscope （TEM） analysis is found to be 28 ＋ 5.6 and 15.6 4-3.4 nm, respectively, and those are spherical in shape. The antibacterial activity of PAGNPsl and PAGNPs2 was tested against Escherichia coil; the small-sized PAGNPs2 exhibited better antibacterial activity with a 16-mm zone of inhibition at a concentration of 400 txg/mL. Furthermore, the catalytic activity of PAGNPsl and PAGNPs2 was analyzed on six hazardous dyes; PAGNPs2 exhibited more pro- nounced catalytic activity than PAGNPsl. Among all of the dyes, 4-nitrophenol was most rapidly degraded to 4-aminophenol by PAGNPs2 within 5 min. The mechanism of catalysis in the presence of PAGNPsl and PAGNPs2 can be described as an electron transfer process from donor NaBH4 to an acceptor. The facile green synthesis of such eco-friendly nanoparticles in bulk suggests this method has potential industrial applications.

关键词： Plumeria alba flower extract Gold nanoparticles Size control Antibacterial Catalytic efficiency

Provenance studies on the heavy mineral placers along the coastal deposits of Odisha,eastern India

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Journal of Palaeogeography 2022年第2期11卷 275-285页

作者： Shayantani Ghosal sudha Agrahari Debashish Sengupta Department of Geology and Geophysics Indian Institute of Technology KharagpurWest BengalIndia Department of Applied Geology Indian Institute of Technology(Indian School of Mines)DhanbadJharkhandIndia

The coastal deposits along the eastern part of the Indian Peninsula are known for the high abundance of heavy minerals. The present study, as discussed here, has been undertaken along the southwestern coastal part of Odisha, India, adjoining the charnockite-migmatite zone of the Eastern Ghat Mobile Belt(EGMB). The composition of the placers along the study area is primarily controlled by the detritus from the proximal hinterland rock type(s). The weathering index has been established based on the grain morphology, major element concentration and radioelement ratios. Petrological characteristics and grain morphology of monazite, zircon, ilmenite and rutile have been presented respectively, and their implications are discussed. The provenance study of these coastal placers is based on the abundance of rare earth elements(REE) and radioactive elements in the placer sands and the rock types in the study area. The tectonic implications are based on the major element abundance of the beach sands.

关键词： Monazite placers High background radiation area(HBRA) Eastern Ghat Mobile Belt(EGMB) Weathering Zircon Rare earth elements(REE) East coast of India

A Convolutional Neural Network Classifier VGG-19 Architecture for Lesion Detection and Grading in Diabetic Retinopathy Based on Deep Learning

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Computers, Materials & Continua 2021年第1期66卷 827-842页

作者： V.sudha T.R.Ganeshbabu Department of Electronics and Communication Engineering Pavai College of TechnologyNamakkal637018India Department of Electronics and Communication Engineering Muthayammal Engineering CollegeRasipuram637408India

Diabetic Retinopathy(DR)is a type of disease in eyes as a result of a diabetic condition that ends up damaging the retina,leading to blindness or loss of *** and physiological retinal variations involving slowdown of blood flow in the retina,elevation of leukocyte cohesion,basement membrane dystrophy,and decline of pericyte cells,*** DR in its initial stage has no symptoms,early detection and automated diagnosis can prevent further visual *** this research,using a Deep Neural Network(DNN),segmentation methods are proposed to detect the retinal defects such as exudates,hemorrhages,microaneurysms from digital fundus images and then the conditions are classified accurately to identify the grades as mild,moderate,severe,no PDR,PDR in ***,saliency detection is applied on color images to detect maximum salient foreground objects from the ***,structure tensor is applied powerfully to enhance the local patterns of edge elements and intensity changes that occur on edges of the ***,active contours approximation is performed using gradient descent to segment the lesions from the ***,the output images from the proposed segmentation process are subjected to evaluate the ratio between the total contour area and the total true contour arc length to label the classes as mild,moderate,severe,No PDR and *** on the computed ratio obtained from segmented images,the severity levels were ***,statistical parameters like the mean and the standard deviation of pixel intensities,mean of hue,saturation and deviation clustering,are estimated through K-means,which are computed as features from the output images of the proposed segmentation *** these derived feature sets as input to the classifier,the classification of DR was ***,a VGG-19 deep neural network was trained and tested using the derived feature sets from the KAGGLE fundus image dataset containing 35,126 images in

关键词： Diabetic retinopathy saliency map structure tensor gradient descent method exudates haemorrhages microaneurysms VGG-19

Anomaly Detection in Social Media Texts Using Optimal Convolutional Neural Network

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Intelligent Automation & Soft Computing 2023年第4期36卷 1027-1042页

作者： Swarna sudha Muppudathi Valarmathi Krishnasamy Department of Computer Science and Engineering Ramco Institute of TechnologyRajapalayam626117India Department of Electronics and Communication Engineering P.S.R.Engineering CollegeSivakasi626140India

Social Networking Sites(SNSs)are nowadays utilized by the whole world to share ideas,images,and valuable contents by means of a post to reach a group of *** use of SNS often inﬂicts the physical and the mental health of the ***,researchers often focus on identifying the illegal beha-viors in the SNS to reduce its negative inﬂ*** state-of-art Natural Language processing techniques for anomaly detection have utilized a wide anno-tated corpus to identify the anomalies and they are often time-consuming as well as certainly do not guarantee maximum *** overcome these issues,the proposed methodology utilizes a Modiﬁed Convolutional Neural Network(MCNN)using stochastic pooling and a Leaky Rectiﬁed Linear Unit(LReLU).Here,each word in the social media text is analyzed based on its *** stochastic pooling accurately detects the anomalous social media posts and reduces the chance of overﬁ*** LReLU overcomes the high computational cost and gradient vanishing problem associated with other activation *** also doesn’t stop the learning process when the values are *** MCNN computes a speciﬁed score value using a novel integrated anomaly detection *** on the score value,the anomalies are identiﬁed.A Teaching Learn-ing based Optimization(TLBO)algorithm has been used to optimize the feature extraction phase of the modiﬁed CNN and fast convergence is *** this way,the performance of the model is enhanced in terms of classiﬁcation *** efﬁciency of the proposed technique is compared with the state-of-art techni-ques in terms of accuracy,sensitivity,speciﬁcity,recall,and *** proposed MCNN-TLBO technique has provided an overall architecture of 97.85%,95.45%,and 97.55%for the three social media datasets namely Facebook,Twitter,and Reddit respectively.

关键词： Anomaly detection convolutional neural network social networking sites stochastic pooling teacher learner-based optimization

Monogamous nature of symmetric N-qubit states of the W class: Concurrence and negativity tangle

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Chinese Physics B 2015年第11期24卷 85-91页

作者： P.J.Geetha K.O.Yashodamma sudha Department of Physics Kuvempu University Inspire Institute Inc.

Using Majorana representation of symmetric N-qubit pure states, we have examined the monogamous nature of the family of states with two-distinct spinors, the W class of states. We have evaluated the N-concurrence tangle and showed that all the states in this family have vanishing concurrence tangle. The negativity tangle for the W class of states is shown to be non-zero, illustrating the fact that the concurrence tangle is always lesser than or equal to the negativity tangle in a pure N-qubit state.

关键词： monogamy of quantum entanglement Majorana representation of symmetric pure states concur-rence tangle negativity tangle

Spin squeezing in Dicke-class of states with non-orthogonal spinors

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Chinese Physics B 2019年第6期28卷 66-71页

作者： K S Akhilesh K S Mallesh sudha Praveen G Hegde Department of Physics University of MysoreManasagangotriMysuru-570006KarnatakaIndia Department of Physics Kuvempu UniversityShankaraghattaShimoga-577451India Inspire Institute Inc. AlexandriaVirginia 22303USA

The celebrated Majorana representation is exploited to investigate spin squeezing in different classes of pure symmetric states of N qubits with two distinct spinors, namely the Dicke-class of states. On obtaining a general expression for spin squeezing parameter, the variation of squeezing for different configurations is studied in detail. It is shown that the states in the Dicke-class, characterized by two-distinct non-orthogonal spinors, exhibit squeezing.

关键词： Majorana representation of pure symmetric multiqubit states spin squeezing Dicke states