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Joarder, A.; Sarma, D.S. (1991)

The microstructures of a 0.2C-3.6Ni steel are studied after isothermal transformation over a temperature range of 600–400°C after different times up to 10 ks at each temperature. It was observed that the transformation at ...

Generalized convex duality for multiobjective fractional programs

Mukherjee, R.N. (1991-12)

Egudo derived some duality theorems for Multi-objective programs using the concept of efficiency coupled with some generalized convexity assumptions on the objective and constraint functions. The main results of the present ...

On the p-norm of the truncated n-dimensional Hilbert transform

Pandey, J.N.; Singh, O.P. (1991-04)

It is shown that a bounded linear operator T from L�(Rn) to itself which commutes both with translations and dilatations is a finite linear combination of Hilbert-type transforms. Using this we show that the ρ-norm of the ...

Slip processing of high T c superconductors

Sinha, R.K.; Sinha, R.K. (Springer India, 1991-08)

Slip-processing technique has been used to fabricate tapes and alumina-supported films of superconducting YBa2Cu3O7-x . Good densification and connectivity are revealed by scanning electron microscopy. Both the tape and ...

Microstructure of Stircast Al—Pb Metal-Metal Composites

Mohan, S.; Agarwala, V.; Ray, S. (1992)

Stircast Al-Pb Metal-Metal composites have been produced at a high rotational speed of 53 s-1 with different lead contents and with the same lead content but different rotational speeds of 53, 37 and 25 s-1 in a stircasting ...

Effect of Reduction Rate on the Swelling Behaviour of Iron Ore Pellets

Sharma, T.; Gupta, R.C.; Prakash, B. (1992)

In the present investigation an attempt has been made to determine the effect of reduction rate on the swelling behaviour of iron ore pellets. For this purpose two Indian iron ore fines from Bailadila and Noamundi deposits ...

The fourier-bessel series representation of the pseudo-differential operator (−r−1D)v

Singh, O.P.; Pandey, J.N. (1992-08)

For a certain Fréchet space F consisting of complex-valued C°° functions defined on / = (0, oo) and characterized by their asymptotic behaviour near the boundaries, we show that: (I) The pseudo-differential operator ...

Microstructure and wear characteristics of an Al-4Cu-20Pb alloy produced by spray deposition

Ojha, S.N.; Pandey, O.P.; Kumar, M.; Ramachandra, C.; Tripathi, B. (1992)

Al–4Cu–20Pb alloy was spray deposited at a gas pressure of 1.4 MPa and melt flow rate of 1.6 kg min−1. The microstructure of the preform exhibited equiaxed morphology with grain size varying from 20–25 μm. Uniform distribution ...

Viscous and thermodynamic behaviour of glass-forming organic liquids

Dubey, K.S.; Ramachandrarao, P. (Springer India, 1992-04)

The free energy difference (ΔG) between an undercooled liquid and its corresponding equilibrium solid has been evaluated on the basis of a method involving Taylor series expansion of ΔG around its value at the equilibrium ...

Sensitivity analysis of generalized variational inequalities

Mukherjee, R.N.; Verma, H.L. (1992-01-01)

Dafermos studied the sensitivity properties of the solutions of a variational inequality with regard to continuity and differentiability of such solutions with respect to a parameter λ. In the present paper we extend this ...

Effect of Firing Condition and Ingredients on the Swelling Behaviour of Iron Ore Pellets

Sharma, T.; Prakash, B. (1993)

In the present investigation an attempt has been made to determine the effect of firing temperature, firing time and ingredients/additives (CaO, MgO, SiO2, Al2O3) on the swelling behaviour of iron ore pellets. For this ...

Duality for Multiobjective Fractional Variational Problems

Mishra, S.K.; Mukherjee, R.N. (1994)

A class of multiobjective fractional variational problems is considered and duals are formulated. Under concavity assumptions on the functions involved, duality theorems are proved through a parametric approach to relate ...

Fe-Cr Melt Nitrogenation When Exposed to Nitrogen Plasma

Sinha, O.P.; Gupta, R.C. (1994)

The nitrogen absorption/desorption for pure iron and Fe-C alloys have been investigated in detail in levitated melts. However, limited study seems to be made while molten Fe-Cr alloy is exposed to nitrogen plasma. Nitrogen ...

Effects of Longitudinal Vibration on Hardness of the Weldments

Tewari, S.P.; Shanker, A. (1994)

The paper pertains to the effects of longitudinal vibration, frequency and amplitude on hardness of the weldments prepared by metal arc welding under dynamic conditions. The frequency range was 0 to 400 Hz and amplitude ...

Note Nitrogen Absorption Rate under Plasma Arc Compared to Resistance and Induction Melting

Sinha, O.P.; Gupta, R.C. (1994)

Nitrogen Absorption Rate under Plasma Arc Comparedto Resistance and Induction Melting

Electrical behaviour of lanthanum- and cobalt-doped strontium stannate

Parkash, O.M.; Mandal, K.D.; Christopher, C.C.; Sastry, M.S. (Springer India, 1994-06)

Electrical properties of lanthanum- and cobalt-doped strontium stannate, SrSnO3, have been studied as a function of temperature. All the compositions investigated have cubic structure. Measurement of Seebeck coefficient ...

Characterization of Functions with Fourier Transform Supported on Orthants

Pandey, J.N.; Singh, O.P. (1994-07-15)

We characterize the functions in Lp(Rn) and generalized functions in D’Lp (Rn), 1

Characteristic wave fronts in magnetohydrodynamics

Menon, V.V.; Sharma, V.D. (1981-05)

The influence of magnetic field on the process of steepening or flattening of the characteristic wave fronts in a plane and cylindrically symmetric motion of an ideal plasma is investigated. This aspect of the problem has ...

Approximating fixed points of some mappings

Bose, R.K.; Mukherjee, R.N. (1981-08)

In a uniformly convex Banach space, Senter and Dotson, Jr., have given conditions under which certain types of iterates of a quasi-nonexpansive mapping converge to a fixed point of the mapping. Here we consider two types ...

Measurements of reflection coefficients of stratified layers using X-band bistatic scatterometers

Jha, K.K.; Singh, K.P.; Singh, R.N. (Springer India, 1984-07)

Laboratory modelling of earth's subsurface stratification has been carried out using X-band microwave bistatic scatterometer system. Look angle variation of reflectivity for various subsurface layers under dry and wet ...

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