Authorship Pattern & Research Collaboration of Bifurcation Research During 2016-2020: A Scientometric Analysis

Dillip Kumar Parida,Satyajit Nayak 건국대학교 GLOCAL(글로컬)캠퍼스 지식콘텐츠연구소 2023 International Journal of Knowledge Content Develop Vol.13 No.3

This study depicts a Scientometric technique of Bifurcation Research output in India for around five years during 2016-2020. It is an active field of analysis in which the bulk of investigation is being done. Scopus is an advanced research platform, assisting in finding, probing and yielding information in the sciences, social sciences, arts, and humanities. The contemporary study discusses the “Bifurcation” as reflected in SCOPUS for 2016-2020. This study examines the highly prolific authors, document type etc. The study exhibited that 2017 shown maximum research papers 1700 (20.44%), the lowermost maturity rate was deciphered in 2018 (19.65%), the standard value of the period of collaboration is 0.18. The time series examines for single-authored, multi-authored, and collaborative papers are 137.8, 1564 and 1701.8 respectively.

Preparation and Experimental Investigation of Thermo-electro-mechanical Behavior of Ag-IPMC Actuator

Dillip Kumar Biswal,Dibakar Bandopadhya,Santosha Kumar Dwivedy 한국정밀공학회 2012 International Journal of Precision Engineering and Vol. No.

Traditional ionic polymer metal composites (IPMCs) composed of Nafion as the base polymer and mostly precious metal platinum/gold as the surface electrode. The proposed work deal with fabrication and investigation of thermo-electromechanical properties of artificial muscles i.e. ionic polymer-metal composites of non-precious metal silver (Ag) as surface electrode. Chemical decomposition method is followed and in-depth fabrication procedures are outlined. The microscopic and morphological analyses show dense packed silver (Ag) particles on the surface of the Nafion membrane. Several experiments are carried out such as bending test for measuring tip force and surface resistance. Dynamic-mechanical analysis (DMA) and thermo-mechanical analysis (TMA) are performed to evaluate the viscoelastic properties and performance of the actuator. The developed pure Ag-IPMC is inexpensive, exhibits superior performance and can be used as artificial muscle materials.

Versatile host-sensitized white light emission in a single-component K₃ZnB₅O₁₀:Dy³⁺ phosphor for ultraviolet converted light-emitting diodes

Dillip, G.R.,Kumar, Grandhe Bhaskar,Bandi, Vengala Rao,Hareesh, M.,Deva Prasad Raju, B.,Joo, S.W.,Bharat, L. Krishna,Yu, Jae Su ELSEVIER SCIENCE 2017 JOURNAL OF ALLOYS AND COMPOUNDS Vol.699 No.-

<P><B>Abstract</B></P> <P>A single-phase white-light-emitting phosphor, K<SUB>3</SUB>ZnB<SUB>5</SUB>O<SUB>10</SUB>:Dy<SUP>3+</SUP>, has been synthesized by a conventional solid-state reaction method. X-ray diffraction (XRD) analysis was used to determine the monoclinic crystal structure of phosphors. The surface states, B 1s, O 1s, K 2p, Zn 2p, and Dy 3d of the phosphor was quantified by X-ray photoelectron spectroscopy (XPS). Diffuse reflectance spectroscopy (DRS) revealed double absorption edges at 3.27 and 5.46 eV for K<SUB>3</SUB>ZnB<SUB>5</SUB>O<SUB>10</SUB> matrix. The formation of defect-levels, zinc interstitials ( Z <SUB> n i </SUB> ) , zinc vacancies ( <SUB> V Z n </SUB> ) , oxygen antisites ( <SUB> O Z n </SUB> ) and oxygen vacancies ( <SUB> V O </SUB> ) in K<SUB>3</SUB>ZnB<SUB>5</SUB>O<SUB>10</SUB>:Dy<SUP>3+</SUP> phosphors were identified by photoluminescent (PL) spectroscopy. The emissions at 405 nm (violet-I), 434 nm (violet-II), and 467 nm (blue) are due to intra-band transitions of ( F X → <SUB> V Z n </SUB> ) , ( Z <SUB> n i </SUB> → <SUB> V Z n </SUB> ) and ( Z <SUB> n i </SUB> → <SUB> O Z n </SUB> ) of the host, respectively. Similarly, the emission at 517 nm (green) corresponds to the transition from free excitons to the oxygen vacancies in the host ( F X → <SUB> V O </SUB> ) . The emissions at 575 and 665 nm are assigned to the <I>f-f</I> transitions of Dy<SUP>3+</SUP> ions within the host matrix. An energy level diagram is proposed to describe the host emission and possible energy transfer from the host to dopant ions in the single-phase phosphor. The phosphor shows good thermal stability with activation energy of 0.52 eV. The combined emissions in the blue, green, yellow, and red regions resulted in white light emission with CIE coordinates of (0.256, 0.258) on the CIE diagram.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Versatile host-sensitized white light emission, K<SUB>3</SUB>ZnB<SUB>5</SUB>O<SUB>10</SUB>:Dy<SUP>3+</SUP> phosphor was synthesized. </LI> <LI> Defect-related surface analysis of phosphor was studied by XPS. </LI> <LI> Energy level diagram was designed to show host to dopant energy transfer process. </LI> <LI> The phosphor has shown good thermal stability with activation energy of 0.52 eV. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Numerical method for heat transfer and fouling analysis of a shell and tube heat exchanger using statistical analysis

Dillip Kumar Mohanty,Pravin Madanrao Singru 한국화학공학회 2012 Korean Journal of Chemical Engineering Vol.29 No.9

Through proper monitoring, problems can be identified and isolated well before the economics of the process are threatened. In contrast to most conventional methods, fouling can be detected when the heat exchanger operates in transient states. Statistical analysis is used to develop a fouling growth model of a heat exchanger subjected to fouling. The statistical analysis was considered for four different types of distributions out of which the lognormal distribution was found to be most suitable. Experiments were conducted with a single pass shell and tube heat exchanger with water both as the hot and cold fluids. The results show that the proposed tool is very effective in detecting critical fouling in a heat exchanger, which can be utilized for predicting the optimal maintenance schedule. Hence, the results of this work can find application in predicting the reduction in heat transfer efficiency due to fouling in heat exchangers that are in operation and assist the exchanger operators to plan cleaning schedules.

Neuroprotective effect of organic and inorganically grown tea on oxidative damage in rat model of Alzheimer’s disease

Ananya Bagchi,Dillip Kumar Swain,Analava Mitra 경희대학교 융합한의과학연구소 2020 Oriental Pharmacy and Experimental Medicine Vol.20 No.3

Production of improved valued tea is in high demand due to its pharmacological properties against various neurodegenerative diseases like Alzheimer’s disease. In this study, an attempt was made to compare the protective effect of the tea grown under organic and inorganic nutrient management practices against intra-cerebroventricular (i.c.v) colchicine induced memory impairment and oxidative damage in rat model of Alzheimer’s disease (AD). Results showed that chronic intraperitoneal (i.p) administration of tea extract (20 mg/kg i.p) significantly improved the cognitive dysfunction and memory impairment in colchicine treated AD rat model. This beneficial effect occurred with an increase in α-secretase activity, Superoxide dismutase, Catalase activities, and a decrease in Acetylcholinesterase level, Aβ -42 level, Cox-2-linked neuro-inflammation by intraperitoneal injection of tea extract grown organically and inorganically. The amyloid Aβ concentration in the rat model of AD was 84 ± 1.7 pg/mg protein. With administration of tea extract, the amyloid Aβ concentration decreased significantly to 55 ± 1.5, 52 ± 1.3 and 49 ± 1.5 pg/mg protein with the field level management of inorganic, integrated and organic nutrients, respectively. In this study celecoxib (20 mg/kg i.p) is used as a reference standard. This study stated organic tea as a promising neuroprotective agent or adjuvant to prevent AD.

Structural studies of a green-emitting terbium doped calcium zinc phosphate phosphor

Ramesh, B.,Dillip, G.R.,Rambabu, B.,Joo, S.W.,Raju, B. Deva Prasad Elsevier 2018 Journal of molecular structure Vol.1155 No.-

<P><B>Abstract</B></P> <P>In this study, a new green emitting CaZn<SUB>2</SUB>(PO<SUB>4</SUB>)<SUB>2</SUB>:Tb<SUP>3+</SUP> phosphors were synthesized through solid-state reaction route. The phosphors were characterized structurally by X-ray diffraction, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). All the synthesized phosphors were crystallized in triclinic crystal structure with <I>P</I> 1 ¯ space group. The phosphate groups in the phosphors were confirmed by FTIR analysis. The surface elements O <I>1</I>s, P <I>2</I>p, Ca <I>2</I>p, Zn <I>2</I>p and Tb 3<I>d</I> were studied by high-resolution XPS spectra. Upon excitation at 378 nm, the dominant green emission of CaZn<SUB>2</SUB>(PO<SUB>4</SUB>)<SUB>2</SUB>:Tb<SUP>3+</SUP> phosphors at 542 nm were noticed in the emission spectra. For various emission wavelengths (at 435 and 489 nm) and constant excitation wavelength (at 378 nm), the decay curves have shown two different decay dynamics of phosphors. The lighting properties such as Commission International de l’Eclairage (<I>x</I> = 0.319, <I>y</I> = 0.398) and color temperature (5995 K) were calculated.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A green emitting CaZn<SUB>2</SUB>(PO<SUB>4</SUB>)<SUB>2</SUB>:Tb<SUP>3+</SUP> phosphors were synthesized. </LI> <LI> Chemical bonds of PO, CaO, ZnO and TbO were investigated by XPS. </LI> <LI> The phosphor has two different decay dynamics upon various emissions. </LI> <LI> Chromaticity coordinates were located in green region of visible spectrum. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Luminescence properties of CaZn₂(PO₄)₂:Sm³⁺ phosphor for lighting application

Ramesh, B.,Dillip, G.R.,Reddy, G. Rajasekhara,Raju, B. Deva Prasad,Joo, S.W.,Sushma, N. John,Rambabu, B. Elsevier 2018 Optik Vol.156 No.-

<P><B>Abstract</B></P> <P>A high-temperature solid state reaction route was employed to synthesize the phosphate based new orange-red emitting trivalent samarium (Sm<SUP>3+</SUP>) ions doped calcium zinc phosphate (CZP: CaZn<SUB>2</SUB>(PO<SUB>4</SUB>)<SUB>2</SUB>) phosphor. The crystalline phase formation was studied by X-ray diffraction analysis. The surface properties of the phosphor were investigated by X-ray photoelectron spectroscopy. Under the excitation of 402 nm, the emission spectra of CZP:Sm<SUP>3+</SUP> has several peaks and the dominant peak at 596 nm was ascribed to <SUP>4</SUP>G<SUB>5/2</SUB> → <SUP>6</SUP>H<SUB>7/2</SUB> transition. The concentration quenching effect of Sm<SUP>3+</SUP> in CZP phosphor was observed for 5 at%. The mechanism of energy transfer between similar Sm<SUP>3+</SUP> ions was determined to be quadrupole-quadrupole interaction. The decay curves of all phosphors were well fitted to the first-order exponential function. The chromaticity coordinates were located in the orange-red region of the chromaticity diagram. Therefore, these results suggest that the orange-red emitting new CZP:Sm<SUP>3+</SUP> phosphor to be used in the phosphor-converted white light emitting diodes.</P>

Assessment of Sediment Load Concentration Using SVM, SVM-FFA and PSR-SVM-FFA in Arid Watershed, India: A Case Study

Sandeep Samantaray,Abinash Sahoo,Dillip K. Ghose 대한토목학회 2020 KSCE JOURNAL OF CIVIL ENGINEERING Vol.24 No.6

Improvement in area of artificial intelligence for predicting different hydrological phenomenon has shaped an enormous alteration in predictions. Knowledge on suspended sediment load (SSL) is vital in managing water resources problems and safe guard environment. Present study evaluated accurateness of five soft computing techniques, i.e. radial basis function network (RBFN), cascade forward back propagation neural network (CFBPNN), support vector machine (SVM), integration of support vector machine with firefly algorithm (SVM-FFA) and phase space reconstruction (PSR) with SVM-FFA (PSR-SVM-FFA) approaches to estimate daily SSL in Salebhata, Suktel, Lant gauge stations in western part of Odisha, India. Performance of selected models were evaluated on basis of performance criterion namely root mean square error (RMSE), Nash-Sutcliffe (NSE), Wilton index (WI) for choosing best fit model. Results acquired verified that application of various neural network methods in present field of study showed fine concurrence with observed SSL values. Comparison of estimation accuracies of different methods exemplified that PSR-SVM-FFA is very precise to estimate SSL when compared with other models. Result shows that Suktel gauge station, the best value of WI is 0.978 for PSR-SVM-FFA model, while it is 0.959, 0.923, 0.885, and 0.842 for SVM-FFA, SVM, CFBPNN, RBFN models in testing phase. Moreover, cumulative SSL data calculated by PSR-SVM-FFA method are closer to observed data as compared to other methods.

Picrasma quassioides mediated cerium oxide nanostructures and their post-annealing treatment on the microstructural, morphological and enhanced catalytic performance

Sreekanth, T.V.M.,Dillip, G.R.,Lee, Y.R. Ceramurgica ; Elsevier Science Ltd 2016 CERAMICS INTERNATIONAL Vol.42 No.6

Cerium oxide (CeO<SUB>2</SUB>) nanostructures are an interesting metal oxide in catalysis owing to their unique redox properties and high mobility of oxygen vacancies at the surface. CeO<SUB>2</SUB> nanostructure was synthesized via a green route using an aqueous extract of Picrasma quassioides bark. Formation of ceria nanostructures were monitored by UV-vis absorption spectroscopy and Fourier transform infrared spectroscopy (FTIR). Annealing temperature-dependent crystallite size and lattice strain on the X-ray peak broadening of the CeO<SUB>2</SUB> nanostructures was determined by the size-strain plots. The application of the green synthesized CeO<SUB>2</SUB> nanostructures for the catalytic degradation of methylene blue by NaBH<SUB>4</SUB> was carried out. We demonstrated that the catalytic decomposition rate was gradually improved due to the increase of annealing temperature of CeO<SUB>2</SUB> nanostructure, and obtained highest performance at 600<SUP>o</SUP>C annealed sample. This is because of the significantly improved crystallinity of CeO<SUB>2</SUB> nanostructure at higher temperature, leading in a low density of crystalline defects and wide distribution of nanostructure with a large surface area to provide more active electrons (e<SUP>-</SUP>) for the decomposition of dye.

Effect of cerium doping on the structural, morphological, photoluminescent and thermoluminescent properties of sodium strontium pentaborate microstructures

Joo, S. W.,Raju, B. Deva Prasad,Dillip, G. R.,Banerjee, A. N.,Jung, J. H. Springer-Verlag 2016 APPLIED PHYSICS A MATERIALS SCIENCE AND PROCESSING Vol.122 No.2