Reinforcement of natural rubber was achieved using multiwalled carbon nanotubes (MWCNTs) dispersed with non-ionic, polymeric-based surfactant. MWCNTs were first dispersed in aqueous solution of INUTEC driven by sonication and then mixed with natural rubber latex. From these mixtures MWCNTs with natural rubber were prepared by casting method. The morphology of the reinforced latex films was investigated by FESEM and AFM. When applying adequate preparation conditions, MWCNTs were well dispersed and homogeneously incorporated in the natural rubber matrix. Mechanical and electrical test results showed an increase in the tensile strength and conductivity than to pure natural rubber. The nanocomposites possess the good tensile strength even without extensive purification on the nanomaterials produced and without any pretreatment on the natural rubber used. The approach presented can be adapted to other MWCNTs/polymer latex systems...

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The implementation of teaching supervision in the classroom is mandatory for all teachers. This study aimed to obtain a consensus or an agreement among the chosen experts on the constructs and items of supervision in food services. The interviews conducted with the eight experts found that there are only five successful constructs that had reached the consensus among the experts and additionally, there are some constructs modification that were made which is (i)planning and preparation (ii)implementation and delivery (iii)evaluation method (iv)objectives achievement and reflection (v)teachers’ professional responsibilities. Researchers have formulated items for each construct in the questionnaire with reference to the previous studies. The questionnaire that has been developed will then be evaluated and reviewed by experts in the second round of the Delphi technique. The instrument for this study consists of a set of questionnaire, which contains 72 items and is then being distribute.....

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