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Now showing items 1041-1060 of 1835

Raman spectroscopy in forensic analysis of blue gel inks on paper

Ramanathan, V.; Keseven, L. (Indian National Science Academy, 2020-09)

Raman spectra of different brands of blue gel inks on A4 sheet were measured at uniform condition for all the samples. Spectral results were subjected to background correction and smoothening. The pre-processed spectral ...
Dynamics of a Particle Moving in One Dimensional Lorentz Lattice Gas

Kumar, S.; Mishra, S. (Springer New York LLC, 2020-09-01)

We study the dynamics of a particle moving in one-dimensional Lorentz lattice-gas where particle performs mainly three different kinds of motion viz ballistic motion, diffusion and confinement. There are two different types ...
Corrigendum to “Evaluation of water absorption and chloride ion penetration of rice straw ash and microsilica admixed pavement quality concrete” [Heliyon 5 (8) (August 2019) e02256](S240584401935916X)(10.1016/j.heliyon.2019.e02256)

Pandey, A.; Kumar, B. (Elsevier Ltd, 2019-09)

In the original published version of this article, an error was present in "Table 1: Phase composition of cement, rice straw ash and microsilica". The values pertaining to percentage amount of SiO2, CaO and MgO in cement ...
Evidence for pressure-induced polarization rotation, octahedral tilting, and reentrant ferroelectric phase in tetragonal (P b0.5 B i0.5)(T i0.5 F e0.5) O3

Singh, P.; Upadhyay, C.; Konôpková, Z.; Liermann, H.-P.; Pandey, D. (American Physical Society, 2019-09-11)

Pressure-induced phase transition in the technologically important tetragonal phase of PbTiO3 has been quite controversial with two entirely different propositions: (1) morphotropic phase boundary-like structural transition ...
ZrB2 nanoparticles transmuting tribological properties of Al3Zr/AA5052 composite

Gautam, G.; Kumar, N.; Mohan, A.; Mohan, S.; Singh, D. (Springer Verlag, 2019-10-01)

Good work hardenability, moderate to high strength of AA5052 alloy and high melting point and elastic modulus of Al3Zr with limited wear resistance have been the driving force to transmute Al3Zr/AA5052 composite by generations ...
Groundwater modelling using an analytic element method and finite difference method: An insight into Lower Ganga river basin

Omar, P.J.; Gaur, S.; Dwivedi, S.B.; Dikshit, P.K.S. (Springer, 2019-10-01)

Groundwater flow modelling provides the water flow dynamics for the estimation and prediction of groundwater movement and its condition in the aquifer. The modelling helps for the management of the groundwater resources ...
SPATIAL VARIATION of URBAN HEAT ISLAND INTENSITY in URBAN CITIES USING MODIS SATELLITE DATA

Bala, R.; Prasad, R.; Yadav, V.P.; Sharma, J. (International Society for Photogrammetry and Remote Sensing, 2019-10-01)

Urban Heat Island (UHI) refers to the occurrence of higher temperatures in urban areas than the neighbouring rural areas. The neighbouring land cover also has some influence on the urban temperatures. The present study ...
A COMPARISON of MACHINE-LEARNING REGRESSION ALGORITHMS for the ESTIMATION of LAI USING LANDSAT - 8 SATELLITE DATA

Yadav, V.P.; Prasad, R.; Bala, R.; Vishwakarma, A.K.; Yadav, S.A.; Singh, S.K. (International Society for Photogrammetry and Remote Sensing, 2019-10-01)

The leaf area index (LAI) is one of key variable of crops which plays important role in agriculture, ecology and climate change for global circulation models to compute energy and water fluxes. In the recent research era, ...
Exploring the Cycle Period and Parity of Stellar Magnetic Activity with Dynamo Modeling

Hazra, G.; Jiang, J.; Karak, B.B.; Kitchatinov, L. (Institute of Physics Publishing, 2019-10-10)

Observations of chromospheric and coronal emissions from various solar-type stars show that the stellar magnetic activity varies with the rotation rates of the stars. The faster the star rotates, the stronger its magnetic ...
Two-fluid Numerical Simulations of the Origin of the Fast Solar Wind

Wójcik, D.; Kuźma, B.; Murawski, K.; Srivastava, A.K. (Institute of Physics Publishing, 2019-10-20)

With the use of our JOANNA code, which solves radiative equations for ion + electron and neutral fluids, we perform realistic 2.5D numerical simulations of plasma outflows associated with the solar granulation. These ...
Identification of point defects on Co-Ni codoping in SnO2 nanocrystals and their effect on the structural and optical properties

Roy, S.; Prajapati, B.; Singh, A.; Joshi, A.G.; Chatterjee, S.; Ghosh, A.K. (American Institute of Physics Inc., 2019-10-21)

Sn 0.97 - yCo 0.03Ni yO 2 (0 ≤ y ≤ 0.04) nanocrystals, with the average crystallite size in the range from 7.3 nm (for y = 0.00) to 5.6 nm (for y = 0.04), have been synthesized using a pH-controlled chemical coprecipitation ...
Suitability of Sm3+-Substituted SrTiO3 as anode materials for solid oxide fuel cells: A correlation between structural and electrical properties

Singh, S.; Pandey, R.; Presto, S.; Carpanese, M.P.; Barbucci, A.; Viviani, M.; Singh, P. (MDPI AG, 2020-10-24)

Perovskite anodes, nowadays, are used in any solid oxide fuel cell (SOFC) instead of conventional nickel/yttria-stabilized zirconia (Ni/YSZ) anodes due to their better redox and electrochemical stability. A few compositions ...
Numerical analysis of temperature distribution in sliding contacts of pin on disc model

Singh, A.K.; Ranjan, V.; Tyagi, R.; Singh, B.N. (JVE International, 2019-11-01)

Pin on disc is a tribosystem confirming to ASTM G99, is employed in this work. It consists of deformable cylindrical disc and rigid pin with friction. Coating of Inconel 712 is added on stainless steel disc and pin is made ...
Dielectric relaxations in Ho2Ti2O7 and Dy2Ti2O7 pyrochlores

Yadav, P.K.; Tolkiehn, M.; Upadhyay, C. (Elsevier Ltd, 2019-11)

Dielectric measurements of Ho2Ti2O7 and Dy2Ti2O7 cubic pyrochlore show two distinctly defined relaxations around 90K and 36K. The nature and possible origin of these relaxations have been determined. The observed value of ...
A methodology for the performance prediction: flow field and thermal analysis of a helium turboexpander

Kumar, M.; Panda, D.; Kumar, A.; Sahoo, R.K.; Behera, S.K. (Springer Verlag, 2019-11-01)

Helium liquefaction systems are widely used in nuclear fission, superconductivity, space industries, and other scientific instruments. However, the efficiency of these systems is quite low due to the cryogenic operating ...
Mechanical and wear behaviour of poly(vinylidene fluoride)/clay nanocomposite

Gaur, A.; Rana, D.; Maiti, P. (Elsevier Editora Ltda, 2019-11)

Poly(vinylidene fluoride) (PVDF)/organically modified nanoclay composites using different amount of nanoclay have been prepared through solution route. The structural changes are determined through X-ray diffraction and ...
A compact-sized surface EMG sensor for myoelectric hand prosthesis

Prakash, A.; Sharma, S.; Sharma, N. (Springer Verlag, 2020-11-01)

Myoelectric prosthesis requires a sensor that can reliably capture surface electromyography (sEMG) signal from amputees for its controlled operation. The main problems with the presently available EMG devices are their ...
Development of sustainable calcium silicate board: Utilization of different solid wastes | [Desarrollo de tableros de silicato de calcio sostenibles: utilización de diferentes residuos sólidos]

Hossain, S.K.S.; Roy, P.K. (Sociedad Espanola de Ceramica y Vidrio, 2019-11)

The present investigation aims to estimate the feasibility of using eggshell and rice husk ash (RHA) as ingredients to produce calcium silicate board (CSB). The solid-state route was used to prepare the calcium silicate ...
Linkage of Geoeffective Stealth CMEs Associated with the Eruption of Coronal Plasma Channel and Jet-Like Structure

Mishra, S.K.; Srivastava, S.K. (Springer, 2020-11-01)

We analyze the eruption of a coronal plasma channel (CPC) and an overlying flux rope using Atmospheric Imaging Assembly/Solar Dynamic Observatory (AIA/SDO) and Solar TErrestrial RElations Observatory (STEREO)-A spacecraft ...
Spin freezing and field induced transition in (Tb1−xEux)2Ti2O7: A magnetic property study

Singh, P.; Pal, A.; Gangwar, V.K.; Ghosh, S.; Singh, R.K.; Ghosh, A.K.; Chatterjee, S. (Elsevier B.V., 2020-11-15)

The magnetic properties and Raman effect of (Tb1−xEux)2Ti2O7 have been investigated. Raman study indicates the existence of hardening due to phonon-phonon anharmonic interaction. The DC magnetic study indicates the significant ...

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