In this article, we examine the use of sensitivity analysis for optimization selected physical properties in rubber compounds and determine objective criteria which allow reduction environmental load during compound production. The shows how significantly each input value affects output value, response graphs express effect parameter on value. solutions described article are applicable to other...

in this article the transient heat transfer in rubber parts has been studied. this study is usefull for estimation of the minimum curing time of the rubber parts and thereby to ensure the quality of the rubber. also is the temperature distribution during the rubber curing is well know, then the curing time could accurately be estimated, which will lead to a better curing process. in this regard...

The experiment was to study the effects of replacing soybean meal by rubber seed meal on growth, economics and carcass characteristics of broiler. A total of 150 day-old commercial broiler (Cobb-500) was reared for a period of 35 days. There were five treatments including T0 (without rubber seed meal), T1 (10% rubber seed meal), T2 (20% rubber seed meal), and T3 (30% rubber seed meal) and T4 (4...

The position of mevalonic acid and isopentenyl pyrophosphate (3 methylbut 3 enyl pyrophosphate) as key intermediates in the biosynthesis of isoprenoid compounds is now firmly established, as also is the route by which mevalonic acid is converted into isopentenyl pyrophosphate. This transformation occurs through three ATP-dependent steps with the intermediate formation of mevalonate 5-phosphate ...

The use of tributyltin (TBT) and triphenyltin (TPT) in some household products are prohibited by "Act on the Control of Household Products Containing Harmful Substances" in Japan. In this study, methods for determination of TBT and TPT in water soluble paints and adhesives were developed by GC-MS. These compounds in paints and adhesives, which were mainly composed of vinyl acetate, urethane and...

Modern passenger car tire tread compounds usually consist of a polymer blend Solution Styrene-Butadiene Rubber (SSBR) and Butadiene (BR) in combination with silica/silane system. To further enhance the compatibility between nonpolar polar silica, different functional groups can be introduced at end or along chains. The influence such functionalization SSBR BR on processing behavior as well mech...

The rubber-producing tree, Ficus elastica (the Indian rubber tree), requires the same substrates for rubber production as other rubber-producing plants, such as Hevea brasiliensis (the Brazilian or Para rubber tree), the major source of commercial natural rubber in the world, and Parthenium argentatum (guayule), a widely studied alternative for natural rubber production currently under commerci...

Abstract: Rubber tree (Hevea brasiliensis) plantation is a major land use practiced in Xishuangbanna of south-western China. Effects of rubber plantation (RP) and tea-rubber intercropping (TRI) systems on soil organic carbon pools were evaluated by recording changes in soil organic carbon in an age sequence of 12-, 20-, 26-, and 40-year old plantations. Labile organic carbon (LOC) increased in ...