فهرست مطالب مهدی آقایاری

Restorative justice as a new approach in the field of criminal law seeks to compensate damages resulted from crimes and repair interrupted relationships. The important point here, is uderstanding the theoretical bases of this concept. In the present research, the theory of neutralization of crime was studied as one of the theoretical bases of restorative justice in order to determine the relationship between these two. According to this theory, the offender despite being aware about wrongfulness of his action, tries to neutralize the shameful picture of the crime through five techniques: “denial of the victim”, “denial of responsibility”, “denial of damages”, “loyalty to the upper commitments” and “condemnation of condemners”, and make it seem reasonable to pave the way for committing crime. Restorative justice programs make it possible for delinquent person to understand the wrongfulness of his act and its justifying techniques in a participatory and community-based process and accept the responsibility of his actions. This research analyses this issue with descriptive and analytical approach and by review article method.

Concentrated suspension of binders in composite propellant causes a complex phenomena so that controlling of rheology properties is difficult due to high percentage of fillers. Composite solid propellant contains paste suspension of mixtures of different components, e.g. oxidizer, fuel and binder. Increasing the percentage of solid phase without increment of viscosity is an important subject in the production of solid propellant. This problem can be solved using two different particle sizes distribution. Five samples of composite solid propellants on the basis of hydroxyl terminated polybutadiene (HTPB) with 85% of solid phase containing dual sizes of ammonium perchlorate (AP) have been prepared. These samples have different coarse/fine ratios between 80/20 to 60/40. It was found that optimum temperature for casting of propellant is greater than 40C. The best ratio for obtaining the least viscosity is 70/30 coarse/fine ratio.

Double base solid propellant burning rate is highly dependent on the pressure, so that the combustion duration propellant rocket engines, combustion vibration leads to considerable changes in pressure. This could lead to an explosion in rocket engines. The best case is propellant combustion independent of pressure. Ballistic modifiers added to propellant formulation for reduce pressure sensitivity and reduce or increase of burning rate also. Lead and copper salts are materials that create plateau and mesa in double base propellant. In this article, effective ingredient in creation of plateau effect in double base propellant investigated. Some of these ingredients are particle size, concentration, dispersal, decomposition temperature and ability of ultraviolet ray of catalyst. In addition to, mechanism of create plateau and mesa in noncatalysed double base propellant and also empirical, radically and preckel mechanisms of create plateau and mesa for lead catalysts in double base propellant investigated.