seamless surfacesecant modulus of ilasticitysecond normal stress differencesecondary bondingsecondary recoverysecondary structuresediment samplingseemann composite resin infusion molding processsegmentsegmentalsegmental diffusionsegmental motionsegmented block copolymersseismic isolationseismic risk factorselective electrodeselectivityselectorselector solventself addition reactionself adhesionself adjusting microscopeself assemblyself associationself cleaningself decorateself decorationself diffusion coefficientself exchangeself extinguishingself filleringself orderingself organizationself recognizingsemi automatic processing methodsemi implicitsemi prepolymer methodsemibatch reactorsemicrystallinesemifinishedsensitizationsensitizersensitizing agentsensorseparationsequencesequential additionserpentine beltserumservice temperature