Rubber biosynthesis takes place on the surface of rubber particles. These particles are surrounded by a monolayer membrane in which the rubber transferase is anchored. In order to gain better insight into whether rubber particles from different plant species share common structural characteristics, the micromorphology of rubber particles from Ficus carica, Ficus benghalensis, and Hevea brasilie...

The rubber tapping knives produced by blacksmiths have cracks and chipped even broken on their blades, so farmers must often replace them with new knives. Thus the product cannot be used for a long time has reduced economic value. cause of this made is easily damaged because gilding method not done properly. So was relatively low level hardness. This study aims to determine effect hardening que...

Nylon 6, 6 is regarded as tough and ductile materials since it exhibit high tensile elongation to break and high drop weight impact strengths. However, under conditions of stress concentration such as in the presence of sharp notches or cracks, polyamides exhibit brittle failure. This property, evaluated as notched Izod or Charpy impact tests, indicates that unmodified polyamides exhibit relati...