tire street children phenomenon is categorized as a social disorder that not only includes a great number of children and youngsters as society future capital with danger but also makes the society suffer of harms. therefore, in order to decrease this disorder we should understand its different dimensions and the factors influencing on it to find various scientific and practical solutions for i...

statement of problem: dental resin composites are becoming prevalent in restorative dentistry and have almost replaced amalgam nowadays. consequently, their mechanical properties and durability are critical. objectives: the aim of this study was to produce pyrex glass nano-particles by wet milling process and use them as reinforcement in dental resins for anterior restorations and then examinat...

Objective:At the present study, relationship between phagocytosis of PLGA particles and combined effects of particle size and surface PEGylation was investigated.  Materials and Methods:Microspheres and nanospheres (3500 nm and 700 nm) were prepared from three types of PLGA polymers (non-PEGylated and PEGylation percents of 9% and 15%). These particles were prepared by solvent evaporation metho...

The influence of the film thickness and the substrate’s refractive index on the surface mode 7 at the superstrate is an important study step that may help clearing some of the misunderstandings 8 surrounding their propagation mechanism. A single sub-wavelength slit perforating a thin metallic 9 film is among the simplest nanostructure capable of launching Surface Plasmon Polaritons on its 10 su...

Experimental observation of Tamm plasmon-polariton (TPP) and surface plasmonpolariton (SPP) hybrid mode in metal/photonic crystal system is reported. Interaction between TPP and SPP leads to repulsion of their dispersion curves.

Nowadays, the expansion of the cities is an inevitable necessity; increasing the dependence of the citizens on motor vehicles and, consequently, making development of the transportation networks a necessity rather than an option. Thus, increasing car ownership and car use has created many problems for the cities, such as increasing greenhouse gas emissions, environmental pollution, casualties o...

agal2o3 nanocomposite were synthesized by solution combustion technique using ammonium carbonate as a new fuel under simultaneous combustion of alumina and silver particles condition. samples prepared with different amount of silver, were characterized by xrd, bet, sem and optical absorption measurements. xrd analysis was used to determine the change in phase and size of the synthesized nanopar...

This research report related to nano-sized particles of tetragonal rutile phase TiO2. We havesuccessfully synthesized TiO2 nanoparticles, by chemical method non-toxic and bio-safe, at lower than 100°C. This method is simple, economic and friendly for environmentally and suitable for large scale grains. Using of choline chloride, to decrease the size of commercial TiO2 by chemical method. ...