this paper presents density functional theory and non-equilibrium green’s function based first principles calculations to explore the sensing property of adenine and thymine based hetero-junction chins for ammonia and phosphine gas molecules. this modeling and simulation technique plays an important and crucial role in the fast growing semiconductor based nanotechnology field. the hetero-juncti...

there was a turning point in each period of time which human has discovered a new sight about the world and nature order in a way, and then has presented this relation by numeral, artful and industrial language. biourbanism focuses on the urban organism, considering it as a hyper complex system, according to its internal and external dynamics and their mutual interactions. nowadays when it is t...

The dwindling of global petroleum deposits and worsening environmental issues have triggered researchers to find an alternative energy such as biodiesel. Biodiesel can be produced via transesterification vegetable oil or animal fat with alcohol in the presence a catalyst. A heterogeneous catalyst at economical price has been studied widely for biodiesel production. It was noted that various typ...

Hollow mesoporous-SiO2 nanocapsules have been synthesized at room temperature using unmodified cowpea Mosaic Virus (CPMV) as a template, and without using any catalyst or surfactant during the synthesis. The average size of the capsules synthesized was ∼200-250 nm with a 60-100 nm hollow core. The resulting nanocapsules were characterized using high resolution transmission electron microscopy (...

With mounting concerns over critical element sustainability in future bio-refineries, the conversion of phyto-extracted nickel (from contaminated lands) into an inexpensive and clean catalyst could help to reduce demand for virgin precious metals. Utilizing this green approach, noble metal catalysts, which require substantial downstream processing, potentially be replaced by a naturally develop...

to study the effects of biological and manure fertilizer on quantity and quality characteristics of roselle (hibiscus sabdariffa l.), an experiment was conducted as split plot based on a randomized complete block design with three replications at the agricultural research center of zabol university, iran during growing season of 2012-2013. treatments included three manure level; 0, 10 and 20 t....