improving the solubility of non-soluble herbal materials is an issue of interest in cell culture based experiments. evaluating the biological activity of these materials could become possible with the aid of cosolvents/surfactants which obviously should have little or no cytotoxic activity. in the present study, the cytotoxic activity of six cosolvents/surfactants: ethanol, methanol, tween 20 a...

INTRODUCTION Recently, fabrication of nanodots structure of various materials has attracted intense scientific interests because of their great potentials for wide technological applications. Metal nanoscale dots that exhibit unique properties based on their nano size effects are expected to be the building blocks of new functional nanodevices, such as catalysis, environmental remediation, DNA ...

E-learning is frequently technology-led rather than theory-led. In order to provide a deeper theoretical foundation for the development of e-learning, this case study uses a model developed from experiential learning theory as the practical basis for the design of an induction CD-Rom for students. In moving from a face-to-face experience to an electronic experience, video content was added to t...

Hydroxyapatite is the major mineral component of human bones. From the point of view of its chemistry, it is calcium orthophosphate which has in its structure hydroxyl groups and in its stoichiometric is described with formula – Ca10(PO4)6(OH)2. Biological properties of hydroxyapatite are very favorable; it is not only biocompatible (which means that after implantation it causes no side effects...

The idea of engineering cooling systems and generators based on thermal transformations and energy conversion in solids has been exciting scientific minds already for several decades. In recent years, a possibility of coolers production based on the electrocaloric effect (ECE) began to become of special interest [1]. This interest is related to the substantial progress made in investigations of...