In this paper, an analysis of dual frequency resonance antenna is achieved by OM-shape microstrip patch antenna. The proposed antenna is analyzed using IE3D simulation software. The analysis of proposed structure is done by varying the dielectric constants and height of the substrate as well as gain and radiation pattern of the antenna is obtained. It observed that on varying the dielectric substrate the effect on proposed antenna is very effective.

Summary Search for better photo sensitizers has always been a challenge in the field of dye sensitized solar cell (DSSC). This paper suggests a new method to identify a good dye for DSSC through the evaluation of energy levels of dye–TiO2 complex. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of the complex are evaluated using cyclic voltammetry (CV) and spectroscopic technique. These energy levels have been used to predict the performance of the solar cell even without fabricating a cell. The authenticity of this method is also revalidated through the correlation of efficiency of practical cell. Copyright © 2017 John Wiley & Sons, Ltd.

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Nowadays perfumes have become as essentials in everyday life. Recent studies reveal that alcohols used as a solvent and few fragrance chemicals have found to have a toxic effect on human health, especially about respiratory symptoms, allergy, autism, asthma, skin disease and eczema. Apart from this, because of Volatile Organic Chemical (VOC) restrictions, environmental pressures in Europe and religious constraints in Islamic nations, there is a need to open up a new market segment of non alcoholic fine fragrances. Water-based micro emulsion as perfumes will be a healthy alternative in that case. Many people apply perfume on clothes not only to cover unpleasant smell but also to protect themselves from perfumes that are thought to be allergic for skin and body. Hence this paper aims to study the effect of water-based perfumes on the skin for contact allergy and colored silk fabric based on mechanical properties (abrasion, tensile strength, pilling, etc.) as well as the colour fastness properties.