A spectrum of proteins derived from the rubber tree, Hevea brasiliensis, reacted with IgE in the plasma from persons allergic to natural rubber latex. Latex B-serum, C-serum and rubber particle membrane proteins were all found to contain allergenie proteins. Variations were observed in the reactivity of the latex, IgE positive plasma to the different proteins. Monoclonal antibodies have been de...

owing to elastic and viscous characteristics embedded rubber compounds, the dissipated energy from periodic deformation is converted into heat generation and consequently, the tire may have different body temperatures for different operating conditions. in most performed investigations, just temperature distribution is considered and the mechanical behaviour of rubber parts which are highly tem...

Indonesia lost more tropical forest than all of Brazil in 2012, mainly driven by the rubber, oil palm, and timber industries. Nonetheless, the effects of converting forest to oil palm and rubber plantations on soil organic carbon (SOC) stocks remain unclear. We analyzed SOC losses after lowland rainforest conversion to oil palm, intensive rubber, and extensive rubber plantations in Jambi Provin...

Rubber elongation factor (REF) and small rubber particle protein (SRPP) are two key factors for natural rubber biosynthesis. To further understand the roles of these proteins in rubber formation, six different genes for latex abundant REF or SRPP proteins, including REF138,175,258 and SRPP117,204,243, were characterized from Hevea brasiliensis Reyan (RY) 7-33-97. Sequence analysis showed that R...

The dimensioning of injection heads for the extrusion of rubber profiles is exclusively based on empiric knowledge of the non-linear flow behaviour of elastomers. Thus, the design of injection heads is carried out with subject to the used rubber blend, whereas the geometry of the appropriate profile is achieved by empiric adaptation of the extrusion die. This was one of the motivations for a re...

the blending of nr and br rubber blend with n330 carbon black is studied on curing behavior and the physico-mechanical properties of a sbr rubber based tire tread compound containing n234 carbon black. the effect of sulphur and accelerator contents on different properties of rubber compound is also tested with a wide range of curing agents. partial substitution of sbr with nr shows significant ...

production and preparation of many parts of the aircraft body including wings with long length, smooth form, and large radius of curvature are amongst the most important challenges in this industry. in this paper, the effective factors in the rubber pad forming method on a pieces contain curvature radius have been investigated by finite element method. the effect of variables such as curvature ...

1 Types of Fillers 1 2 Mixing and Dispersion 2 3 Rheology and Modulus of Filled Rubber 3 3.1 Hydrodynamic Effect 4 3.2 Rubber–Filler Interaction 4 3.3 Filler–Filler Interaction (Particle Network Formation) 5 4 Mechanical Hysteresis 5 4.1 Dynamic Properties 6 4.2 Strain Softening and the Mullins Effect 7 5 Failure Properties of Filled Rubber 7 6 Summary 9 Acknowledgment 9 References 9 Further Re...

Activator 73 A Activator 73 LM Multifunctional cure activators for the sulfur vulcanization of diene rubber, especially natural rubber. They can partly or totally replace conventional activators based on fatty acids (stearic acid, zinc stearate, and zinc 2-ethylhexanoate) and impart excellent reversion resistance. They can also be used as an effective physical peptizer for the mastication of na...

A 19-year old female with blue rubber bleb nevus syndrome. Endoscopic laser photocoagulation and surgical resection of gastrointestinal angiomata. cerebellum: a case report and review of the literature. 39. Hofhuis WJD, Orange AP, Bouquet J, et al. Blue rubber blue nevus syndrome: report of a case with consumption coagulopathy complicated by manifest thromboses. A case report: pregnancy complic...