Special issue on computing,communication and sensor network: CCSN,Puri, Odisha,India, 2014

Microsystem Technologies -     

An image-in-image communication scheme using secret sharing and M-ary spread spectrum watermarking

Microsystem Technologies - Secret image sharing is a means of secure transmission of images on an open network through meaningful share generation that reduces suspiciousness of conventional image...     

Nematic DNA Thermotropic Liquid Crystals with Photoresponsive Mechanical Properties

Over the last decades, water‐based lyotropic liquid crystals of nucleic acids have been extensively investigated because of their important role in biology. Alongside, solvent‐free thermotropic liquid crystals (TLCs) from DNA are gaining great interest, owing to their relevance to DNA‐inspired optoelectronic applications. Up to now, however, only the smectic phase of DNA TLCs has been reported. The development of new mesophases including nematic, hexagonal, and cubic structures for DNA TLCs remains a significant challenge, which thus limits their technological applications considerably. In this work, a new type of DNA TLC that is formed by electrostatic complexation of anionic oligonucleotides and cationic surfactants containing an azobenzene (AZO) moiety is demonstrated. DNA–AZO complexes form a stable nematic mesophase over a temperature range from ?7 to 110 °C and retain double‐stranded DNA structure at ambient temperature. Photoisomerization of the AZO moieties from the E‐ to the Z‐ form alters the stiffness of the DNA–AZO hybrid materials opening a pathway toward the development of DNA TLCs as stimuli‐responsive biomaterials.     

Spread spectrum image watermark detection on degraded compressed sensing measurements with distortion minimization

Multimedia Tools and Applications - In the age of digital world, the wide dissemination of images need bandwidth (BW) efficient transmission as well as ownership protection during transmission over...     

Recent developments in mine hoists drives

This paper presents a comprehensive literature review for mine hoist drives. Both DC and AC drives with their control techniques are discussed with a comparative study on their performance. Many recent control techniques using power electronic based systems are also discussed. The future trend in this area is also addressed. This review paper is the first of its kind information source provider for mine winder drives to be useful for researchers, designers and application engineers in the mining industry.     

Role of the CCAAT-binding protein CBF/NF-Y in transcription

The CCAAT motif is one of the common promoter elements present in the proximal promoter of numerous mammalian genes transcribed by RNA polymerase II. CBF (also called NF-Y and CP1) consists of three different subunits and interacts specifically with the CCAAT motif. In each CBF subunit, the segment needed for formation of the CBF-DNA complex is conserved from yeast to human and, interestingly, the conserved segment of two CBF subunits, CBF-A and CBF-C, are homologous to the histone-fold motif of eukaryotic histones and archaebacterial histone-like protein HMf-2. The histone fold motifs of CBF-A and CBF-C interact with each other to form a heterodimer that associates with CBF-B to form a heterotrimeric CBF molecule, which then binds to DNA.     

Preparation of Al--Al2O3 in-situ particle composites by addition of Fe2O3 particles to pure Al melt

Abstracts are not published in this journal This revised version was published online in November 2006 with corrections to the Cover Date.