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Now showing items 1-20 of 35

Synthesis of nanocrystalline spinel phase by mechanical milling of Al-Cu-Fe and Al-Cu-Cr-Fe quasicrystalline alloys

Mukhopadhyay, N.K.; Yadav, T.P.; Tiwari, R.S.; Srivastava, O.N. (Oldenbourg Wissenschaftsverlag, 2008)

In the present study, a low-temperature synthesis of (Cu,Fe)Al 2O4 and (Cu,Cr,Fe)Al2O4 spinels from the quasicrystalline phases was investigated with the variation of process parameters during milling and annealing. The ...
Performance evaluation and damage assessment of buildings subjected to seismic loading

Chandrasekaram, S.; Serino, G.; Gupta, V. (2008)

The intent of performance-based earthquake engineering is to provide methods for designing, constructing and maintaining buildings, such that they are capable of providing predictable performance when affected by earthquakes. ...
Structural and magnetic properties of Fe doped NiO

Mallick, P.; Rath, C.; Biswal, R.; Mishra, N.C. (Scientific Publishers, 2009-04-24)

Mott-Hubbard anti-ferromagnetic insulator, NiO shows p-type semiconducting behaviour due to vacancy at Ni2+ site in its bunsenite structure. We report the modification of structural and magnetic order in NiO on Fe doping. ...
Stability of mechanically alloyed Al70Cu15Ni 15 alloy during annealing

Yadav, T.P.; Mukhopadhyay, N.K.; Tiwari, R.S.; Srivastava, O.N. (Institute of Physics Publishing, 2010)

A nano τ3 vacancy-ordered phase in the Al-Cu-Ni alloy system has been synthesized with a composition close to Al70Cu 15Ni15 by mechanical alloying a mixture of elemental powder in a high-energy ball mill by varying milling ...
Evolution and structural transition of quasicrystalline phases in Al-Fe-Cu-Cr and Al-Fe-Cu-Mn alloys during high energy ball milling

Yadav, T.P.; Mukhopadhyay, N.K.; Tiwari, R.S.; Srivastava, O.N. (Institute of Physics Publishing, 2010)

The main objective of the current work was to investigate the transformation mechanism in quasicrystals during mechanical alloying/milling. The quasicrystalline phases have been synthesized by melting the individual elements ...
Coupled Bayesian sets algorithm for semi-supervised learning and information extraction

Verma, S.; Hruschka, Jr. E.R. (2012)

Our inspiration comes from Nell (Never Ending Language Learning), a computer program running at Carnegie Mellon University to extract structured information from unstructured web pages. We consider the problem of semi-supervised ...
Interaction forces between nanoparticles in Lennard-Jones (L-J) solvents

Sinha, Indrajit; Mukherjee, Ashim K (Institute of Physics Publishing, 2013-09-05)

Molecular simulations, such as Monte Carlo (MC) and molecular dynamics (MD) have been recently used for understanding the forces between colloidal nanoparticles that determine the dispersion and stability of nanoparticle ...
Analysis and PIC Simulation of a Gyrotron Travelling Wave Tube Amplifier

Thottappan, M.; Singh, Surya Prakash; Jain, P.K. (N/A, 2013-12)

The analysis of a Ka-band gyrotron Travelling Wave Tube (gyro-TWT) amplifier using a uniform cylindrical waveguide as its interaction circuit has been presented for the TE01 mode of operation a self-consistent nonlinear ...
PIC simulation study of a 35 GHz, 200 kW gyroklystron

Chauhan, M. S.; Swati, M. V.; Jain, P. K. (Brazilian Microwave and Optoelectronics Society, 2013-12)

A three-dimensional PIC simulation of a 35 GHz, 200 kW two cavity gyroklystron amplifier has been performed to study the electron beam and RF wave interaction behavior using a commercial PIC code 'MAGIC'. The electromagnetic ...
Kinetic Monte Carlo Simulation of the oscillatory catalytic CO oxidation using a modified Ziff-GulariBarshad model

Sinha, Indrajit; Mukherjee, Ashim K (Institute of Physics Publishing, 2014)

The oxidation of CO on Pt-group metal surfaces has attracted widespread attention since a long time due to its interesting oscillatory kinetics and spatiotemporal behavior. The use of STM in conjunction with other experimental ...
Evaluation of Solar Dryer/Air Heater Performance and the Accuracy of the Result

Srivastava, A.K.; Shukla, S.K.; Mishra, Sandeep (Elsevier Ltd, 2014)

This paper investigates the feasibility of using Lauric acid as a phase change material (PCM) to store excess solar energy and release it when the energy availability is inadequate or not available for solar drying process. ...
Survey and Performance Evaluation of Jamgodrani Hills and Nagda Hill Wind Farm in Madhya Pradesh, India – A Case Study

kumar, Sachin; Pandey, Priyanka (Elsevier Ltd, 2014)

Today, most of the electricity generated comes from fossil fuels (coal, oil, and natural gas). These fossil fuels have finite reserves and will run out in the future. The negative effect of these fossil fuels is that they ...
Development of ultrafine-grained microstructure in Al-Cu-Mg alloy through equal-channel angular pressing

Anuhya, Danam Sai; Gupta, Ashutosh; Nayan, Niraj; and et. al. (Institute of Physics Publishing, 2014)

Al-Cu-Mg alloys are extensively used for riveting applications in aerospace industries due to their relatively high shear strength coupled with high plasticity. The significant advantage of using V65 aluminum alloy ...
Effect of surface nanostructure on tensile and low cycle fatigue behavior of Al 2014 alloy

Chattopadhyay, K; Pandey, V; Srinivas, N C S (Institute of Physics Publishing, 2014-07-04)

Aluminium alloy 2014 is an important age hardening alloy for aerospace industries. Effect of ultrasonic shot peening (USSP) in peak aged condition of this alloy was studied on its surface microstructure, tensile properties ...
Inverse Hall Petch Like Mechanical Behaviour in Nanophase Al Cu Fe Quasicrystals

Mukhopadhyay, N.K.; Ali, F.; Scudino, S.; and et. al. (Polska Akademia Nauk, 2014-08)

The structural and mechanical stability of quasicrystals are important issues due to their potential for possible applications at high temperatures and stresses. The aim of the present work is, therefore, to review the ...
Leaching of Al-Based Polygrain Quasicrystalline and Related Crystalline Surfaces

Yadav, T.P.; Mishra, S.S.; Pandey, S.K. (Polska Akademia Nauk, 2014-08)

In the present investigation, we have studied leaching on polygrain Al-based quasicrystalline (i-Al63Cu25Fe12) as well as crystalline (B2 phase; Al55Cu30Fe15) alloy surfaces using a 10 mole NaOH solution. The surface was ...
Go Green with WEEE: Eco-friendly approach for handling e- waste

Jaiswal, Anand; Samuel, Cherian; Patel, Bharat S.; Kumar, Manish (Elsevier B.V., 2014-12-05)

The rate of EEE put in market and WEEE generated in previous years defines the magnitude of the problem of e-waste handling. Many researches have indicated the potential threat of e-waste and stated the need of proper ...
Study of post annealing effects on structural and optical properties of sol-gel derived ZnO thin films grown on n-Si substrate

Yadav, Aniruddh Bahadur; Periasamy, C.; Jit, S. (Institute of Physics Publishing, 2015)

Zinc oxide (ZnO) thin films were grown on n-type silicon (100) substrates by sol- gel spin coating technique. The prepared thin films were annealed in the presence of Ar at three different temperatures (at 450°C, 550°C and ...
Study of Residual Stresses in I Sectioned bars of Non-Linear WorkHardening Materials under Torsion

Dwivedi, Sandeep; Lal, Radha Krishna; Choubey, V. K.; and et al (Elsevier Ltd, 2015)

This paper deals with the springback problems of I section bars of non-linear work-hardening materials under the torsional loading. Using the deformation theory of plasticity, a numerical scheme based on the finite difference ...
A Review on Thermal Energy Storage Unit for Solar Thermal Power Plant Application

Kumar, A.; Shukla, S.K. (Elsevier Ltd, 2015)

In the present scenario of a huge energy demand, dependency on fossil fuels only, certainly creates crisis in future especially for developing country. Although renewable resources of energy like solar energy is being ...

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