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On the stability of steady-states of a two-dimensional system of ferromagnetic nanowires

Dwivedi S., Dubey S.

Journal of Applied Analysis

2017

Vol. 23, nr 2

89--100

We investigate the stability features of steady-states of a two-dimensional system of ferromagnetic nanowires.We constitute a systemwith the finite number of nanowires arranged on the (e⃗1, e⃗2) plane, where (e⃗1, e⃗2, e⃗3) is the canonical basis of ℝ3. We consider two cases: in the first case, each nanowire is considered to be of infinite length, whereas in the second case, we deal with finite length nanowires to design the system. In both cases, we establish a sufficient condition under which these steady-states are shown to be exponentially stable.

The mechanism of L-arginine oxidation by quinquevalent vanadium in the presence of cationic surfactant in sulphuric acid media. A kinetic study

Dubey S., Pandey A.

Bulletin of the Polish Academy of Sciences. Chemistry

2001

Vol. 49, No. 2

183-191

The oxidation is first order each in [substrate] and the [oxidant]. The reaction follows an acid catalysed path, exhibiting second order dependence in [H+]. Bunnett's plot indicates that water acts as a nucleophile. Protonated form of oxidant has been postulated as the reacting oxidizing species. The rate studied at four different temperatures enabled us to calculate activation parameters. A suitable mechanism has been proposed.

Asphaltene and wax technology - prediction, identification and prevention of production disasters

Stankiewicz B. A., Broze J. G., Dubey S., Iyer S. D., O'Neal P. M., Utech N. M., Leitko A.

Prace Instytutu Górnictwa Naftowego i Gazownictwa

2000

nr 110 wyd. konferencyjne

575--579