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How to cite this article: Kumar A, Kashyap M, Pathania V. Serpiginous seborrhoeic keratosis: An unusual presentation following an eczematous dermatitis. Indian J Dermatol Venereol Leprol 2012;78:775-6.

Dual‐peak electrocaloric effect (ECE) exists over a broad range significantly below Curie temperature in co‐mixed SrBi1.98La0.02Nb2–x Ta x O9 (SBLNT) compositions exhibiting diffused phase transition. The indirect measurement method is used to study the influence of defect‐modified potential barrier distributions on the ECE of lead‐free SBLNT ceramics. Variation in isothermal entropy change and adiabatic temperature change with varying tantalum (Ta) content signify effects of morphology and impact of altered potential barriers in the parent lattice without involving structural phase transition. A unique appearance of twin‐peak positive–negative ECE in equally doped SrBi1.98La0.02Nb‐TaO9 matrix is attributed to doping‐induced formation of polar nanoregions and distinct dipole switching mechanisms controlled by evenly distributed Nb–Ta potential barriers in SBLNT lattice. Higher doping concentration reduces porosity and promotes electric polarization, thereby the relative cooling power gradually increases with increasing Ta at Nb sites.

The base of democracy is voting. Each vote is important thus recording and tallying of each vote with accuracy and impartiality is important. Voting is one of the electoral routes that ensure the sustenance of democratic system in any civilization. But rigging is one of the biggest problems during the election using EVMs. The possible rate of rigging in the EVMs is five votes per minute. So, to set right the current problems in Indian voting system the aim of electronic voting system using fingerprint technique is to design an Electronic Voting Machine (EVM) system by using embedded system to eliminate the chances of rigging in an election. In this proposed system fingerprint technique is used. The vote will be confirmed in the favor of a candidate only when the fingerprint of the voter will be matched otherwise the vote will be rejected. The problem of booth capturing and multiple votes casted by single person is being addressed here. User would be able to get the message in his/her cell phone in order to ensure and acknowledging the successful casting of vote like VVPAT do in EVM. We can do on spot registration of the voter as well if candidate does not have finger print data available in EVM.

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