فهرست مطالب m. halimi

In Islamic Architecture, the best and most elaborative and decorative designs are on the Mihrabs. Mihrab of Pir Hamzeh Sabzpoosh Abarkooh, a precious example from the sixth century (Hejry Ghamary) reveals significant values in design, traditional plaster modeling, cornice, and epigraph. Due to lack of attention to this precious Mihrab by some pioneer architectural researchers, this Mihrab has not been a subject of research yet. This research project will conduct investigations, questioning the significance of design motif on the Mihrab of Pir Hamzeh Sabzpoosh Abarkooh. This research involves analytic and descriptive methods in searching for information from public and from libraries as well as study of photographic examples and measurement of the design motifs using available software. The conclusion of this research presents involvement of principles of Iranian design motif and application of geometrical and mathematical proportional relationships. Furthermore, presenting the progress in plastering art and techniques.Mihrab, Design Motif, Mihrab of Pir Hamzeh Sabzpoosh Abarkooh Tomb,Traditional plaster modeling, Islamic Architecture

We describe the synthesis of silver nanoparticles (Ag-NPs) using aqueous extract of Dracocephalum lindbergii . UV–visible spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray energy dispersive spectrophotometer (EDX) were performed to ascertain the formation of Ag-NPs. UV-visible absorption spectra of the reaction medium containing silver nanoparticles showed maximum absorbance at 416 nm. The XRD pattern revealed the crystalline structure of SNPs. The SEM analysis showed the size and shape of the nanoparticles. The environmental friendly method provides simple, easy and cost effective faster synthesis of nanoparticles than chemical methods and can be used in several areas such as food, medicine.