Plastics are extremely diverse in terms of chemical composition, properties and possible applications, and are widely distributed in the society and the environment. In the last 15 years the global annual production has doubled, reaching 245 million tons in 2008. Several of the chemicals used to produce plastics are hazardous for human health and the environment. These, and their degradation pr...

PURPOSE Preservative treatments are necessary for disinfection and long term storage when dealing with biological tissue. Freezing is a gold standard but infectious risk can only be eliminated by using chemical fluids that may alter the mechanical properties, depending on their composition. Therefore, we experimentally evaluated the influence of freezing and of two commonly used preservative fl...

Polymer and composite materials are becoming more widely used in the Russian automotive industry. The market of polymer for components is characterized by an insufficiently developed production some types such materials. And, as a result, use imported Styrene plastics one innovative Using them car makes product attractive to customers. this type allows create new look car. This applies both int...

the development of yielded or failure zone due to an engineering construction is a subject of study in different disciplines. in petroleum engineering, depletion from and injection of gas into a porous rock can cause development of a yield zone around the reservoir. studying this phenomenon requires elasto-plastic analysis of geomaterial, in this case the porous rocks. in this study, which is a...

in this research the effect of volume and morphology of eutectic carbides on tribological behaviour of ni-hard 4 cast irons have been investigated. therefore, as a result of the fact that the carbon content effects the carbides morphology of ni-hard cast irons, the chemical compositions of five different specimens were kept constant with the exception of the carbon content, which was varied fro...

The properties of products made from recycled plastics are in part determined by the level and types of impurities found in the primary plastic. The removal of other plastics is essential if the properties are to approach those of virgin resin. Purification of plastic resins is achieved by exploiting differences in material properties of the different plastic types. Differences in density and s...

А basic composition based on polyvinyl alcohol hydrogel was obtained to create a plastic mass of the “Slime” type with required set properties and an extended service life.