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Clustered Single-Board Devices with Docker Container Big Stream Processing Architecture

Computers, Materials & Continua 2022年第12期73卷 5349-5365页

作者： N.Penchalaiah Abeer S.Al-Humaimeedy Mashael Maashi j.chinna babu Osamah Ibrahim Khalaf Theyazn H.H.Aldhyani Department of CSE AITSRajampet516126Andhra PradeshIndia Software Engineering Department College of Computer and Information SciencesKing Saud UniversityP.O.Box 103786Riyadh11616Saudi Arabia Software Engineering Department King Saud UniversityRiyadh11543Saudi Arabia Department of Electronics and Communication Engineering Annamacharya Institute of Technology and SciencesRajampet516126Andhra PradeshIndia Al-Nahrain University Al-Nahrain Nanorenewable Energy Research CenterBaghdad10072Iraq Applied College in Abqaiq King Faisal UniversityP.O.Box 400Al-Ahsa31982Saudi Arabia

The expanding amounts of information created by Internet of Things(IoT)devices places a strain on cloud computing,which is often used for data analysis and *** paper investigates a different approach based on edge cloud applications,which involves data filtering and processing before being delivered to a backup cloud *** Paper suggest designing and implementing a low cost,low power cluster of Single Board Computers(SBC)for this purpose,reducing the amount of data that must be transmitted elsewhere,using Big Data ideas and *** Apache Hadoop and Spark Cluster that was used to run a test application was containerized and deployed using a Raspberry Pi cluster and *** obtain system data and analyze the setup’s performance a Prometheusbased stack monitoring and alerting solution in the cloud based market is *** Paper assesses the system’s complexity and demonstrates how containerization can improve fault tolerance and maintenance ease,allowing the suggested solution to be used in *** evaluation of the overall performance is presented to highlight the capabilities and limitations of the suggested architecture,taking into consideration the suggested solution’s resource use in respect to device restrictions.

关键词： Big data edge cloud cluster architecture performance engineering Raspberry pi dockers warm container technology data streaming

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Adaptive Fuzzy Logic Despeckling in Non-Subsampled Contourlet Transformed Ultrasound Pictures

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Intelligent Automation & Soft Computing 2023年第3期35卷 2755-2771页

作者： T.Manikandan S.Karthikeyan j.jai jaganath babu G.babu Department of Electronics and Communication Engineering Rajalakshmi Engineering CollegeChennai602105India Department of Electronics and Communication Engineering Velammal Institute of TechnologyChennai601204India Center for System Design Chennai Institute of TechnologyChennai600069India Department of Bio-Medical Engineering Easwari Engineering CollegeChennai600089India

Signal to noise ratio in ultrasound medical images captured through the digital camera is poorer,resulting in an inaccurate *** a result,it needs an efﬁcient despeckling method for ultrasound images in clinical practice and *** article proposes a novel adaptive fuzzyﬁlter based on the direc-tionality and translation invariant property of the Non-Sub sampled Contour-let Transform(NSCT).Since speckle-noise causes fuzziness in ultrasound images,fuzzy logic may be a straightforward technique to derive the output from the noisy ***ﬁltering method comprises detection andﬁltering ***,image regions classify at the detection stage by applying fuzzy inference to the directional difference obtained from the NSCT noisy ***,the system adaptively selects the better-suitedﬁlter for the speciﬁc image region,resulting in signiﬁcant speckle noise suppression and retention of detailed *** suggested approach uses a weighted averageﬁlter to distinguish between noise and edges at theﬁltering *** addition,we apply a structural similarity mea-sure as a tuning parameter depending on the kind of noise in the ultrasound *** proposed methodology shows that the proposed fuzzy adaptiveﬁlter effectively suppresses speckle noise while preserving edges and image detailed structures compared to existing approaches.

关键词： Image processing fuzzy logic directional differences classiﬁcation ultrasound technology

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Effects of various parameters on the attrition of bed material in a recirculating fluidized bed with a draft tube

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Particuology 2018年第3期16卷 61-70页

作者： Shivali Chourasia babu j. Alappat Department of Civil Engineering Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India

We performed an experimental study to investigate the effects of various parameters on the attrition of bed material and its size distribution with increasing operation time in a recirculating fluidized bed （RCFB）. The studied parameters included superficial velocity of fluidizing air, bed inventory, and spacing between the jet top and draft tube bottom （spacer height）. The bed material was prepared from Indian Standard （IS） Grade I sand from sieves with a size range of 2.20-1.00 mm. Experiments were performed at ambient conditions, with the superficial air velocity ranging from 7.13-9.16 m/s, a bed inventory of 7-10 kg, spacing of 0.085 and 0.045 m between the jet top and draft tube bottom, and an operating time of 40 h. We investigated the influence of these parameters in terms of changes in the size distribution of particles, changes in the %-weight of particles of different size ranges, generation of particles with smaller diameters, the decrease of the downcomer bed height, variations in the coefficient of uniformity and coefficient of curvature, and material loss from entrainment of fines with increasing operation time. The mode of attrition was abrasion in all experiments. We found that with increasing operation time and other parameters （bed inventory, superficial air velocity, and spacer height） attrition of the bed material also increased. Generation and elutriation of fines were more pronounced at higher superficial air velocity, bed inventory, and spacer height.

关键词： Attrition Recirculating fluidized bed (RCFB) Fluidization Elutriation Fines

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Evaluation of the microstructure, secondary dendrite arm spacing, and mechanical properties of Al–Si alloy castings made in sand and Fe–Cr slag molds

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International journal of Minerals,Metallurgy and Materials 2017年第7期24卷 784-793页

作者： I.Narasimha Murthy j.babu Rao Department of Metallurgical Engineering Andhra University Visakhapamam 530003 India

The microstructure and mechanical properties of as-cast A356（Al–Si） alloy castings were investigated. A356 alloy was cast into three different molds composed of sand, ferrochrome（Fe–Cr） slag, and a mixture of sand and Fe–Cr. A sodium silicate–CO_2 process was used to make the necessary molds. Cylindrical-shaped castings were prepared. Cast products with no porosity and a good surface finish were achieved in all of the molds. These castings were evaluated for their metallography, secondary dendrite arm spacing（SDAS）, and mechanical properties, including hardness, compression, tensile, and impact properties. Furthermore, the tensile and impact samples were analyzed by fractography. The results show that faster heat transfer in the Fe–Cr slag molds than in either the silica sand or mixed molds led to lower SDAS values with a refined microstructure in the products cast in Fe–Cr slag molds. Consistent and enhanced mechanical properties were observed in the slag mold products than in the castings obtained from either sand or mixed molds. The fracture surface of the slag mold castings shows a dimple fracture morphology with a transgranular fracture nature. However, the fracture surfaces of the sand mold castings display brittle fracture. In conclusion, products cast in Fe–Cr slag molds exhibit an improved surface finish and enhanced mechanical properties compared to those of products cast in sand and mixed molds.

关键词： silica sand ferrochrome slag alloy castings secondary dendrite arm spacing mechanical properties

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Gas Separation Membranes with Atom-Thick Nanopores:The Potential of Nanoporous Single-Layer Graphene

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Accounts of Materials Research 2022年第10期3卷 1073-1087页

作者： Luis Francisco Villalobos Deepu j.babu Kuang-jung Hsu Cedric Van Goethem Kumar Varoon Agrawal Laboratory of Advanced Separations École Polytechnique Fédérale de LausanneSion 1950Switzerland Department of Materials Science and Metallurgical Engineering Indian Institute of TechnologyHyderabadTelangana 502284India

CONSPECTUS:Gas separation is one of the most important industrial processes and is poised to take a larger role in the transition to renewable energy,e.g.,carbon capture and hydrogen *** gas separation processes involving cryogenic distillation,solvents,and sorbents are energy intensive,and as a result,the energy footprint of gas separations in the chemical industry is extraordinarily *** has motivated fundamental research toward the development of novel materials for highperformance membranes to improve the energy efficiency of gas separation.

关键词： separation distillation energy

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Recent progress on MOF/MXene nanoarchitectures:A new era in coordination chemistry for energy storage and conversion

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journal of Energy Chemistry 2023年第11期86卷 409-436,I0009页

作者： Sada Venkateswarlu Sowjanya Vallem Muhammad Umer N.V.V.jyothi Anam Giridhar babu Saravanan Govindaraju Younghu Son Myung jong Kim Minyoung Yoon Department of Chemistry and Green-Nano Materials Research Center Kyungpook National UniversityDaegu 41566Republic of Korea Department of Chemistry Gachon UniversitySeongnam 1320Republic of Korea Department of Physics Gachon UniversitySeongnam 13120Republic of Korea Center for Superfunctional Materials Department of ChemistryUlsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea Department of Chemistry Sri Venkateswara UniversityTirupati 517502Andhra PradeshIndia Department of Civil Engineering Yeungnam UniversityGyeongsan 38541GyeongbukRepublic of Korea Department of Bionanotechnology Gachon UniversitySeongnam 13120Republic of Korea

The development of urbanization and industrialization leads to rapid depletion of fossil ***,the production of fuel from renewable resources is highly *** energy conversion and storage is a benign technique with reliable output and is *** an exceptional electrochemical catalyst with tunable properties like a huge specific surface area,porous channels,and abundant active sites is critical ***,Metal-organic frameworks(MOFs)and two-dimensional(2D)transition-metal carbides/nitrides(MXenes)have been extensively investigated in the field of electrochemical energy conversion and ***,advances in the research on MOFs are hampered by their limited structural stability and conventionally low electrical conductivity,whereas the practical electrochemical performance of MXenes is impeded by their low porosity,inadequate redox sites,and ***,researchers have been designing MOF/MXene nanoarchitectures to overcome the limitations in electrochemical energy conversion and *** review explores the recent advances in MOF/MXene nanoarchitectures design strategies,tailoring their properties based on the morphologies(0D,1D,2D,and 3D),and broadening their future opportunities in electrochemical energy storage(batteries,supercapacitors)and catalytic energy conversion(HER,OER,and ORR).The intercalation of MOF in between the MXene layers in the nanoarchitectures functions synergistically to address the issues associated with bare MXene and MOF in the electrochemical energy storage and *** review gives a clear emphasis on the general aspects of MOF/MXene nanoarchitectures,and the future research perspectives,challenges of MOF/MXene design strategies and electrochemical applications are highlighted.

关键词： Metal-organicframework MXene MoF/MXene nanoarchitecture Battery Supercapacitor Electrochemical catalysis

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Interaction study between Ocimum sanctum and Glimepiride(sulfonylurea derivative) in diabetic rats

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journal of Chinese Pharmaceutical Sciences 2015年第3期24卷 156-163页

作者： Mohd Fasih Ahmad Raj K.Keservani D j Mani babu Department of Pharmacology V. L. College of Pharmacy School of Pharmaceutical Sciences Rajiv Gandhi Proudyogiki Vishwavidyalaya

The present study was intended to discover the interaction between Ocimum sanctum(O. sanctum) and Glimepiride, a sulfonylurea derivative used in the treatment of type-2 diabetes, in diabetic rats to suggest an alteration in the dose of Glimepiride in case of hypoglycaemia. LD50 studies for the aqueous extract of O. sanctum leaf were carried out in albino mice up to the dose level of 2000 mg/kg. O. sanctum at low, medium and high doses(100, 200 and 400 mg/kg, per oral), respectively and Glimepiride ?(half) therapeutic dose, therapeutic dose and 2 time therapeutic dose(0.036, 0.072 and 0.144 mg/200 g, per oral) were selected. After the treatment with O. sanctum and Glimepiride as single doses and in various combinations of these two drugs in streptozotocin-induced diabetic rats serum glucose levels in all the groups were analysed by the glucose oxidase-peroxidase method. When administered alone as single doses both aqueous extract of O. sanctum leaf and Glimepiride produced a significant anti-diabetic effect in diabetic rats. The anti-diabetic effect observed with combination of aqueous extract of O. sanctum leaf and Glimepiride was significant and more when compared to either of the drugs given alone. There was a definite interaction that necessitates dose readjustment of Glimepiride and further glucose levels are to be frequently monitored to avoid complication of hypoglycemic condition with aqueous extract of O. sanctum leaf and Glimepiride combination.

关键词： Herb-drug interaction Ocimum sanctum Glimepiride Type-2 diabetes

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Colloidal synthesis and characterization of Cu_2ZnSnS_4 nanoplates

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journal of Semiconductors 2017年第3期38卷 110-115页

作者： S.Ananthakumar j.Ram Kumar S.Moorthy babu Crystal Growth Centre Anna University Department of Physics Faculty of Physical and Mathematical SciencesUniversity of Concepcion

Synthesis of copper zinc tin sulphide（Cu_2ZnSnS_4/ with nanoplate morphology was achieved through colloidal method using oleic acid as capping agent and solvent with 1-octadecene（1-ODE） at 240°C.X-ray diffraction（XRD） analysis shows that the synthesized nanoplates possessed pure kesterite *** analysis clearly shows the formation of nanoplates having the size of about 50–100 *** spin resonance（ESR） spectrum analysis of the prepared nanoplates shows that the valence state of copper（II） which indicates the strong coupling with other metal *** gravimetric/differential thermal analysis（TG/DTA） analysis shows the weight loss of sample at 450°C predicting the loss of capping ligands on the surface of the *** possible mechanism for the conversion of nanoplate-like structures during synthesis was *** results are discussed in detail.

关键词： colloidal method solar cells kesterites nanoplates oleic acid

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SYNCHRONIZATION OF SINGULAR MARKOVIAN jUMPING NEUTRAL COMPLEX DYNAMICAL NETWORKS WITH TIME-VARYING DELAYS VIA PINNING CONTROL

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Acta Mathematica Scientia 2020年第3期40卷 863-886页

作者： K.S.ANAND j.YOGAMBIGAI G.A.HARISH babu M.SYED ALI S.PADMANABHAN APS College of Engineering Bangalore 560082India MMES College of Arts and Science MelvisharamTamilnaduIndia Reva Institute of Technology and Management Bengaluru-560064 Department of Mathematics Thiruvalluvar UniversityVelloreTamilnadu 632115India RNS Institute of Technology ChannasandraBangalore 560098India

This article discusses the synchronization problem of singular neutral complex dynamical networks(SNCDN)with distributed delay and Markovian jump parameters via pinning *** control strategies are designed to make the singular neutral complex networks *** delay-dependent synchronization criteria are derived in the form of linear matrix inequalities based on a modified Lyapunov-Krasovskii functional *** applying the Lyapunov stability theory,jensen's inequality,Schur complement,and linear matrix inequality technique,some new delay-dependent conditions are derived to guarantee the stability of the ***,numerical examples are presented to illustrate the effectiveness of the obtained results.

关键词： Singular complex networks synchronization Lyapunov-krasovski method markovian jump pinning control linear matrix inequality

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Continuous segregation of binary heterogeneous solids in a fast-fluidized bed

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Particuology 2017年第6期15卷 101-107页

作者： M. Prasad babu P.S.T. Sai K. Krishnaiah Department of Chemical Engineering Indian Institute of Technology Madras Chennai 600 036 India

Continuous segregation of binary heterogeneous solids （different density mixtures） is carried out in a gas-solid fluidized bed to study the effects of gas velocity, solids feed rate, feed composition and density difference of solids on the separation factor （recovery of flotsam at top outlet） and the quality of the product （purity of flotsam at top outlet） in a continuous fast-fluidized bed. The holdup of the bed material is obtained in each experimental run. It is observed that the separation factor decreases with increase in solids feed rate or density difference of solids, and increases with gas velocity or proportion of flotsam in the feed. The quality of the product decreases with increase in gas velocity or solids flow rate, and increases with feed composition or density difference of solids. The experimental results show that the separation factor and the quality of the product are more sensitive to gas velocity than to other operating parameters, Empirical correlations for predicting the separation factor and quality of the product are proposed based on the Richards model for individual flotsam mass fraction in the feed, and the predictions agree satisfactorily with the present exlgerimental data,

关键词： Fast-fluidized bed Gas-solid Continuous segregation Heterogeneous solids Solids holdup

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