id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-10984	Luo, Jun; Jiao, Peiyuan; Zeng, Keyan; Zhang, Yixin	Study of Ancient Glass Classification and Subclassification Based on Systematic Clustering Models	2023	7	.pdf	application/pdf	3082	117	42	Mean value of various chemical components in different types of glass From the table, it can be found that the chemical composition of silicon dioxide (SiO2) and potassium oxide (K2O) in high potassium glass is significantly higher than that in lead barium glass, and the content of lead oxide (PbO) and barium oxide (BaO) is significantly lower than that in lead barium glass. Critical value Indicators Principle Critical Value 𝑆𝑖𝑂 1𝜎 principle 59.24 𝑃𝑏𝑂 Lower Quartile principle 16.26 𝐵𝑎𝑂 1𝜎 principle 3.02 For silicon dioxide (SiO2), if it is below the critical value, it indicates that the glass is lead barium glass; For barium oxide (BaO), if it is below the critical value, it indicates that the glass is high potassium glass; For barium oxide (BaO), if it is below the critical value, it indicates that the glass is high potassium glass.	cache/ajst-10984.pdf	txt/ajst-10984.txt