Highly Efficient Photocatalytic Studies on Bi36 Fe2 O57 Ceramic Synthesized by Chemical Route

Manish Kumar Verma,Vinod Kumar,Upakar Patel,Vishnu Shankar Rai,Anup Kumar,Arup Kumar De,Aditya Kumar Prajapati,Dinesh Prajapati,Kedar Sahoo,Tapas Das,N. B. Singh,K. D. Mandal 한국전기전자재료학회 2023 Transactions on Electrical and Electronic Material Vol.24 No.5

Bi36 Fe2 O57 (BFO) polycrystalline ceramic was synthesized by economical chemical route. The single-phase formation of BFO ceramic was confirmed by powder X-ray diffraction studies. Nanosized formation of BFO ceramics established by XRD and TEM analysis. The bimodal distribution of grain size is observed with size ranging from 50 to 600 nm. It observed that the Bi36 Fe2 O57 photocatalyst exhibited higher catalytic activity for the degradation of Methylene Blue (MB) under visible-light irradiation The oxidation state of elements present in the BFO ceramic, was confirmed by XPS studies. The pseudocapacitive nature of BFO ceramic was observed by cyclic Voltammetry. The dielectric constant of BFO ceramic was found 375 at 1 kHz at 300 K. The dielectric loss was found 0.51 at 100 kHz and 300 K.

Role of Composition in Enhancing Heat Transfer Behavior of Carbon Nanotube‑Ethylene Glycol Based Nanofluids

N. Bindushree,A. Dhabale,M. S. Dhanush,A. Honakeri,A. Ankit,M. K. Anusha,R. Kumar,H. K. Choudhary,V. Khopkar,K. Chandra Sekhar,B. Sahoo 대한금속·재료학회 2020 ELECTRONIC MATERIALS LETTERS Vol.16 No.6

We report the method of tuning the thermal conductivity through the composition of multiwall carbon nanotube (MWCNT)dispersed ethylene glycol based nanofluids. The structure and properties of the MWCNTs were characterized by scanningelectron microscopy, transmission electron microscopy, X-ray diffraction, Raman spectroscopy and thermogravimetric analysis. A parallel plate thermal conductivity (PPTC) set up was fabricated and used for measurement of thermal conductivityof the nanofluids. We have prepared ethylene glycol based nanofluids containing 0.05, 0.1, 0.15, 0.20, 0.25 and 0.35 wt%of MWCNTs. The thermal conductivities of these fluids were measured by keeping them between the two (parallel) plates,referred as the hot and the cold plates, of the sample holder in the PPTC apparatus. The lower plate was water-cooled andthe upper plate was heated. The temperature of the hot plate was varied between 35 and 80 °C. The thermal conductivityof the fluids was calculated using the one-dimensional heat conduction equation. According to our observation, an efficientheat transfer occurs through the nanofluids with an optimum concentration of 0.20 wt% of CNTs. Our work demonstrates the importance of the composition of the nanofluids and their structural defects in heat transfer.

Phytochemical and therapeutic potentials of Morinda tinctoria Roxb. (Indian mulberry)

Sahoo, Atish K,Narayanan, Nisha,Kumar, N Satheesh,Rajan, S,Mukherjee, Pulok K Kyung Hee Oriental Medicine Research Center 2009 Oriental pharmacy and experimental medicine Vol.9 No.2

Morinda tinctoria Roxb. (Family: Rubiaceae) is commonly known as Indian mulberry or Aal in India. This plant is very well known for its therapeutic benefit in Indian systems of medicine including Ayurveda and Siddha and in other forms of traditional Medicine worldwide for the treatment of several ailments. Almost all parts of this plant have been explored for its medicinal uses. Several reports on the phytochemical and therapeutic benefits of this plant have been reported. In this article an attempt has been made to review the traditional uses, phytochemical profiles and therapeutic potentials of Indian mulberry.

Phytochemical and therapeutic potentials of Morinda tinctoria Roxb. (Indian mulberry)

Atish K Sahoo,Nisha Narayanan,N Satheesh Kumar,S Rajan,Pulok K Mukherjee 경희대학교 융합한의과학연구소 2009 Oriental Pharmacy and Experimental Medicine Vol.9 No.2

Morinda tinctoria Roxb. (Family: Rubiaceae) is commonly known as Indian mulberry or Aal in India. This plant is very well known for its therapeutic benefit in Indian systems of medicine including Ayurveda and Siddha and in other forms of traditional Medicine worldwide for the treatment of several ailments. Almost all parts of this plant have been explored for its medicinal uses. Several reports on the phytochemical and therapeutic benefits of this plant have been reported. In this article an attempt has been made to review the traditional uses, phytochemical profiles and therapeutic potentials of Indian mulberry. Morinda tinctoria Roxb. (Family: Rubiaceae) is commonly known as Indian mulberry or Aal in India. This plant is very well known for its therapeutic benefit in Indian systems of medicine including Ayurveda and Siddha and in other forms of traditional Medicine worldwide for the treatment of several ailments. Almost all parts of this plant have been explored for its medicinal uses. Several reports on the phytochemical and therapeutic benefits of this plant have been reported. In this article an attempt has been made to review the traditional uses, phytochemical profiles and therapeutic potentials of Indian mulberry.

Synchronization and Operation of Parallel Inverters using Droop Control

L. K. Sahoo,N. D. Thakur,K. Rai,P Sensarma,R. D. Jha,P. Mohanty,A Sharma 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5

To obtain a continuous power supply Distributed Generation (DG) with a Decentralized Power System (DPS), i.e. replacing a single UPS unit with multiple, smaller units in parallel, is emerging as new paradigm. The technically challenging aspect of DPS is the synchronization of inverters and load sharing among the parallel connected inverters. In this paper, a control method is proposed and implemented for synchronization and parallel operation of inverters. Droop control method has been used for equal power sharing, and design of power control loop. The design issues for voltage control loop are analyzed with the discussion of relative stability of the system. A current control loop is designed and analyzed to provide synchronization between the inverters.

In vitro rumen fermentation kinetics, metabolite production, methane and substrate degradability of polyphenol rich plant leaves and their component complete feed blocks

( Ganesh N. Aderao ),( A. Sahoo ),( R. S. Bhatt ),( P. K. Kumawat ),( Lalit Soni ) 한국축산학회(구 한국동물자원과학회) 2018 한국축산학회지 Vol.60 No.11

Background: This experiment aimed at assessing polyphenol-rich plant biomass to use in complete feed making for the feeding of ruminants. Methods: An in vitro ruminal evaluation of complete blocks (CFB) with (Acacia nilotica, Ziziphus nummularia leaves) and without (Vigna sinensis hay) polyphenol rich plant leaves was conducted by applying Menke’s in vitro gas production (IVGP) technique. A total of six substrates, viz. three forages and three CFBs were subjected to in vitro ruminal fermentation in glass syringes to assess gas and methane production, substrate degradability, and rumen fermentation metabolites. Results: Total polyphenol content (g/Kg) was 163 in A. nilotica compared to 52.5 in Z. nummularia with a contrasting difference in tannin fractions, higher hydrolysable tannins (HT) in the former (140.1 vs 2.8) and higher condensed (CT) tannins in the later (28.3 vs 7.9). The potential gas production was lower with a higher lag phase (L) in CT containing Z. nummularia and the component feed block. A. nilotica alone and as a constituent of CFB produced higher total gas but with lower methane while the partitioning factor (PF) was higher in Z. nummularia and its CFB. Substrate digestibility (both DM and OM) was lower (P < 0.001) in Z. nummularia compared to other forages and CFBs. The fermentation metabolites showed a different pattern for forages and their CFBs. The forages showed higher TCA precipitable N and lower acetate: propionate ratio in Z. nummularia while the related trend was found in CFB with V. sinensis. Total volatile fatty acid concentration was higher (P < 0.001) in A. nilotica leaves than V. sinensis hay and Z. nummularia leaves. It has implication on widening the forage resources and providing opportunity to use forage biomass rich in polyphenolic constituents in judicious proportion for reducing methane and enhancing green livestock production. Conclusion: Above all, higher substrate degradability, propionate production, lower methanogenesis in CFB with A. nilotica leaves may be considered useful. Nevertheless, CFB with Z. nummularia also proved its usefulness with higher TCA precipitable N and PF. It has implication on widening the forage resources and providing opportunity to use polyphenol-rich forage biomass for reducing methane and enhancing green livestock production.

Nanofiller as Crosslinker for Halogen-Containing Elastomers

N. G. Sahoo,E. Shiva Kumar,C. K. Das,A. B. Panda,P. Pramanik 한국고분자학회 2003 Macromolecular Research Vol.11 No.6

Structure -Properties Relations of Polypropylene/ Liquid Crystalline Polymer Blends

N.G.Sahoo,C.K.Das,HyewonJeong,Chang-SikHa 한국고분자학회 2003 Macromolecular Research Vol.11 No.5

The blends of polypropylene (PP) with glass filled thermotropic liquid crystalline polymer (LCP-g) have been prepared by melt mixing techniques at different blend ratios. The thermal, dynamic mechanical, crystalline and morphological characteristics of these blends were investigated. Higher percent crystallinity was observed for 10% level of LCP-g in the blend in comparison to that of other blend ratios. The thermal stability increased with LCP-g concentration in the blend with PP. The variation of storage modulus, stiffness and loss modulus as a function of blend ratios suggested the phase inversion at the 50% level of LCP-g in the blend. The scanning electron microscopy (SEM) photographs showed the creation of voids and destruction of the fiber structures during the dynamic mechanical measurements. Processing behavior of the blends depended on the fiber forming characteristics of LCP-g, which again varied with the molding temperatures.

Structure -Properties Relations of Polypropylene/ Liquid Crystalline Polymer Blends

Sahoo, N.G.,Das, C.K.,Jeong, Hye-Won,Ha, Chang-Sik The Polymer Society of Korea 2003 Macromolecular Research Vol.11 No.4

The blends of polypropylene (PP) with glass filled thermotropic liquid crystalline polymer (LCP-g) have been prepared by melt mixing techniques at different blend ratios. The thermal, dynamic mechanical, crystalline and morphological characteristics of these blends were investigated. Higher percent crystallinity was observed for 10% level of LCP-g in the blend in comparison to that of other blend ratios. The thermal stability increased with LCP-g concentration in the blend with PP. The variation of storage modulus, stiffness and loss modulus as a function of blend ratios suggested the phase inversion at the 50% level of LCP-g in the blend. The scanning electron microscopy (SEM) photographs showed the creation of voids and destruction of the fiber structures during the dynamic mechanical measurements. Processing behavior of the blends depended on the fiber forming characteristics of LCP-g, which again varied with the molding temperatures.

Nanofiller as Vulcanizing Aid for Styrene-Butadiene Elastomer

Sahoo, N.G.,Das, C.K.,Panda, A.B.,Pramanik, P. The Polymer Society of Korea 2002 Macromolecular Research Vol.10 No.6

The use of ZnO and stearic acid is very well known in sulfenamide accelerated sulfur vulcanization of diene elastomers. Zn-ion coated nano filler has been developed and tested, in styrene-butadiene rubber (SBR) as sulfur vulcanizing activator cum reinforcing filler. In this study Zinc oxide has been replaced by the Zn-ion coated nano silica filler with an aim to study the dual role of this nanofiller in SBR. The presence of Zn-ion on the nano silica filler surface activates the sulfur vulcanization by involving Zn++ in to the sulfurating complex formed with thiazole from sulfenamide. The increase of Zn-ion, on the nanofiller, decrease the scorch safety of the elastomer compound but increase the tensile strength, state of cure and tear strength and attain maximum at its 10% level. The presence of stearic acid increases the rate of vulcanization. Replacement of stearic acid with mono-stearate, however, increases the vulcanization rate but decrease the ultimate state of cure. A mechanistic scheme involving dual function of this nanofiller has been suggested.