in this study, dynamic behavior of a controller's self destruction mechanism has been simulated using 3d-fem in adams software and investigated. this paper has been concentrated on high acceleration controller's projectiles. this controller is mechanical and has been placed in top of the projectile. the goal of this study is to investigate the destruction mechanism operation i.e. movement of pi...

in this research, a sol-modified composite electrodeposition technique that combines the sol-gel method with the conventional electrodeposition process was utilized to deposit ni-tio2 nanocomposite coatings. cyclic voltammetry and chronoamperometry techniques were applied to study the influence of the tio2 sol concentration on the deposits’ electrochemical behavior. the results clearly showed t...

adiponectin is one of the most important members of adipokine family which is widely synthesized and secreted by adipose tissue. the action of adiponectin is via binding to main receptors. it has several actions including regulation of glucose level, lipid homeo­stasis and reproductive system. adiponectin can also influence vascular endothelium via preventing the migration of monocytes. the rol...

the aim of this research is preparation of sno2 nanowires by means of thermal chemical reaction vapor transport deposition (tcrvtd) method from sno powders. the morphology, chemical composition and microstructure properties of the nanowires are characterized using field emission scanning electron microscope (fe-sem), eds, and xrd. the xrd diffraction patterns reveal that the sno2 nanowires have...

in this work, based on experimental observations and exact theoretical predictions, the kinetic scheme of raft polymerization is extended to a wider range of reactions such as irreversible intermediate radical terminations and reversible transfer reactions. the reactions which have been labeled as kinetic scheme are the more probable existing reactions as the theoretical point of view. the deta...

background : insecticide resistance is one of the serious problems for german cockroach control program. this study was conducted to determine the bendiocarb and carbaryl resistance mechanisms in german cockroaches using the piperonyl butoxide (pbo). methods : bioassay tests were conducted with 4 to 6 different concentrations of both insecticides with four replicates of 10 susceptible strain co...

in this study the synthesis of molybdenum oxide nano-whiskers with circular cross-section is performed. in some areas, it was observed that also some whiskers have open tips exhibiting their hollow structures. these whiskers have side dimensions ranging 2-5 μm with an average diameter in the nanometer rang. the structure suggested the vapor-liquid-solid growth mechanism (vls). scanning elect...

the summer of 1960 saw the world's first demonstration of an entirely new source of light, which on the other hand, is so concentrated and powerful that it can produce power densities billions of times as inteuse as those on the surface of sun, and, on the other hand, can be controlled so precisely that surgeons use it to perform many delicate operations on the human eye. the beam from thi...

  Introduction: Radiation Induced Bystander Effect (RIBE) which cause radiation effects in non-irradiated cells, has challenged the principle according to which radiation traversal through the nucleus of a cell is necessary for producing biological responses. What is the mechanism of this phenomenon? To have a better understanding of this rather ambiguous concept substantial number of original ...

nowadays, the internet has had a rapid expansion and presence in all areas of the individuals, institutions, companies and organizations lives. this has made large extent of data available so that the users need to access their desired information or services through using search engines. to continue and promote providing services, search engines require a source of income. sponsored search adv...