41. The base material should be slightly damp when compacting. 42. Paraxylene is a petroleum-based material used to make polyester. 43. PAHs are formed anytime carbon-based materials are burned incompletely. 44. CdSe-based materials also have potential uses in biomedical imaging. 45. The company operates refineries in Jamaica and Suriname for alumina, the base material for aluminum. 46. This technology offers up to ten times higher brightness than previous zinc sulfide based materials . 47. Updates to base material is a strong argument in favour of transclusion rather than substitution. 48. Silicon wafers are the base material for chips onto which tiny electronic circuits are etched. 49. Silicon wafers are the base material for semiconductor chips. 50. Composed of more than 95 percent air, the silicon-based material looks like bluish smoky hardened gelatin.
