Conventional physical index testing According to GB/T 12,914 2008, the determination of tensile strength of paper and paperboard 25 , GB/T 4582002, the determination of air permeability of paper and paperboard (Schober Method) 26 , GB/T 451.32002, the determination of thickness of paper and paperboard 27 , and GB/T 451.22002, the determination of quantitative weight of paper and paperboard 28 are utilized for assessing the tensile strength, breathability, thickness, and quantification of the fundamental web and core material
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Nature 382 : 255257
Exposure to Tobacco, Environmental Tobacco Smoke and Nicotine in Pregnancy: A Pragmatic Overview of Reviews of Maternal and Child Outcomes, Effectiveness of Interventions and Barriers and Facilitators to Quitting
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