Search Results - "VENKATA RAMANA, E"

Novel synthesis of Ag@Co/RGO nanocomposite and its high catalytic activity towards hydrogenation of 4-nitrophenol to 4-aminophenol by Krishna, Rahul, Fernandes, Diana M., Dias, Catarina, Ventura, Joao, Venkata Ramana, E., Freire, Cristina, Titus, Elby

“…We report a facile and green method for the synthesis of Ag@Co/RGO nanocomposite using two reducing agents, l-ascorbic acid (L-AA) and sodium borohydride…”
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Thermal conductivity and viscosity of hybrid nanfluids prepared with magnetic nanodiamond-cobalt oxide (ND-Co3O4) nanocomposite by Sundar, L. Syam, Irurueta, G.O., Venkata Ramana, E., Singh, Manoj K., Sousa, A.C.M.

“…Synthesis of magnetic nanodiamond-cobalt oxide (ND-Co3O4) nanocomposite material; preparation of nanofluids and estimation of thermal properties such as…”
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Improved ferroelectric and pyroelectric properties of Pb-doped SrBi4Ti4O15 ceramics for high temperature applications by Venkata Ramana, E., Graça, M.P.F., Valente, M.A., Bhima Sankaram, T.

“…[Display omitted] •Sr1−xPbxBi4Ti4O15 (SPBT, x=0−0.4) ceramics were synthesized by soft chemical method.•X-ray diffraction analysis confirmed the formation of…”
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Synthesis and magnetoelectric studies on Na0.5Bi0.5TiO3-BiFeO3 solid solution ceramics by VENKATA RAMANA, E, SURYANARAYANA, S. V, BHIMA SANKARAM, T

“…Polycrystalline ceramics of 1a degree x[Na0.5Bi0.5TiO3]a degree x[BiFeO3] (NBT-BFO) were synthesized by the modified Pechini's method to study their magnetic…”
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Effect of Phase Transitions on Thermal Depoling in Lead-Free 0.94(Bi0.5Na0.5TiO3)–0.06(BaTiO3) Based Piezoelectrics by Mahajan, Amit, Zhang, Hangfeng, Wu, Jiyue, Ramana, E. Venkata, Reece, M. J, Yan, Haixue

“…0.94­(Bi0.5Na0.5TiO3)–0.06­(BaTiO3) (BNTBT) is a potential lead-free piezoelectric candidate to replace lead-based PZT ceramics. The thermal depoling…”
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Development and Characterization of Copper Nanoparticles Embedded Polymeric Microbeads for Drug Delivery and Antibacterial Applications by Ramana, E. Venkata, Naseem

“…Nanoparticles have been utilized in a variety of biomedical applications owing to their ability to achieve systemic stability and targeted drug delivery. In…”
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Thermal conductivity and viscosity of stabilized ethylene glycol and water mixture Al2O3 nanofluids for heat transfer applications: An experimental study by Syam Sundar, L., Venkata Ramana, E., Singh, Manoj K., Sousa, Antonio C.M.

“…In this work nanofluids have been prepared by dispersing Al2O3 nanoparticles in different base fluids such as 20:80%, 40:60% and 60:40% by weight of ethylene…”
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Magnetoelectric investigations in La-modified bismuth layered ferroelectromagnetics by Venkata Ramana, E., Bhima Sankaram, T.

“…Five-layered Aurivillius compounds of SrBi 5− x La x FeTi 4O 18 (SBLFT) with x = 0.0, 0.65, 0.75 and 0.85 are synthesized to study ferroelectromagnetic…”
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Nanodiamond-Fe3O4 nanofluids: Preparation and measurement of viscosity, electrical and thermal conductivities by Sundar, L. Syam, Venkata Ramana, E., Graça, M.P.F., Singh, Manoj K., Sousa, Antonio C.M.

“…Nanodiamond (ND) attached with magnetite (Fe3O4) nanoparticles have been synthesized successfully by in-situ and chemical reduction of Fe3+ and Fe2+ cations on…”
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Enhanced Thermal Conductivity and Viscosity of Nanodiamond-Nickel Nanocomposite Nanofluids by Sundar, L. Syam, Singh, Manoj K., Ramana, E. Venkata, Singh, Budhendra, Grácio, José, Sousa, Antonio C. M.

“…We report a new type of magnetic nanofluids, which is based on a hybrid composite of nanodiamond and nickel (ND-Ni) nanoparticles. We prepared the…”
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Viscosity of low volume concentrations of magnetic Fe3O4 nanoparticles dispersed in ethylene glycol and water mixture by Syam Sundar, L., Venkata Ramana, E., Singh, M.K., De Sousa, A.C.M.

“…[Display omitted] ► Magnetic nanoparticles were synthesized and an average particle size was found as 11.42nm. ► Ethylene glycol and water mixture is…”
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Experimental investigation of thermo-physical properties, heat transfer, pumping power, entropy generation, and exergy efficiency of nanodiamond + Fe3O4/60:40% water-ethylene glycol hybrid nanofluid flow in a tube by Syam Sundar, L., Mesfin, Solomon, Venkata Ramana, E., Said, Zafar, Sousa, António C.M.

“…•Entropy and exergy efficiency of nanodiamond + Fe3O4/60:40% W/EG hybrid nanofluids were analyzed.•Maximum thermal conductivity is enhanced to 12.79% at…”
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Properties, heat transfer, energy efficiency and environmental emissions analysis of flat plate solar collector using nanodiamond nanofluids by Sundar, L. Syam, Ramana, E. Venkata, Said, Zafar, Punnaiah, V., Chandra Mouli, Kotturu V.V., Sousa, Antonio C.M.

“…The collector efficiency, heat transfer, energy, and environmental emissions of water -based nanodiamond (ND) nanofluids circulate in flat plate solar…”
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Structure and ferroelectric studies of (Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 piezoelectric ceramics by E., Venkata Ramana, Mahajan, A., Graça, M.P.F., Mendiratta, S.K., Monteiro, J.M., Valente, M.A.

“…•(Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 (BCTZO) ceramic was synthesized by the ceramic method.•In situ XRD and Raman spectra showed the phase transition of BCTZO around…”
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Effect of processing on the structures and properties of bismuth sodium titanate compounds by Mahajan, Amit, Zhang, Hangfeng, Wu, Jiyue, Venkata Ramana, E., Yu, Chuying, Tarakina, Nadezda V., Reece, M. J., Yan, Haixue

“…The processing of sodium (Na) and bismuth (Bi)-based piezoelectric compounds are always a concern due to their volatilization at high temperatures (> 1000 °C)…”
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Effect of samarium and vanadium co-doping on structure, ferroelectric and photocatalytic properties of bismuth titanate by Ramana, E. Venkata, Prasad, N. V., Tobaldi, David Maria, Zavašnik, Janez, Singh, M. K., Hortigüela, María Jésus, Seabra, M. P., Prasad, G., Valente, M. A.

“…We performed a systematic analysis of the structure, ferroelectric and photocatalytic activities of Sm and V co-doped Bi 4 Ti 3 O 12 (SBVT) ceramics. The…”
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The Combined Effect of Al2O3 Nanofluid and Coiled Wire Inserts in a Flat-Plate Solar Collector on Heat Transfer, Thermal Efficiency and Environmental CO2 Characteristics by Saleh, B., Sundar, L. Syam, Aly, Ayman A., Ramana, E. Venkata, Sharma, K. V., Afzal, Asif, Abdelrhman, Yasser, Sousa, Antonio C. M.

“…The present study experimentally investigated the thermal efficiency, collector area, weight, embodied energy, environmental CO 2 emissions of Al 2 O 3 /water…”
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Rapid Electrochemical Synthesis of Hydrogenated Graphene Oxide Using Ni Nanoparticles by Krishna, Rahul, Titus, Elby, Okhay, Olena, Gil, João Campos, Ventura, João, Ramana, E. Venkata, Gracio, José J.A.

“…A novel method for the rapid hydrogenation of graphene oxide (GO) is established using nickel nanoparticles (Ni NPs) and through electrochemical reaction…”
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Magnetic and electric characterizations of sol–gel-derived NaFe(WO4)2 rods by Durairajan, A., Ramana, E. Venkata, Teixeira, B., Sobolev, N. A., Graça, M. P. F., Valente, M. A.

“…Wolframite-structured NaFe(WO 4 ) 2 (NFeW) micron sized particles with rod-type morphology were synthesized by sol–gel method with lower temperature and…”
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Effect of rare-earth (La and Eu) doping on ferroelectric and magnetic properties of magnetoelectric Pb(Fe 0.5 Nb 0.5 )O 3: Ferroelectric and magnetic properties of magnetoelectric Pb(Fe 0.5 Nb 0.5 )O 3 by Venkata Ramana, E., Graça, M. P. F., Valente, M. A.

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