我国上市公司信息披露时间的选择——基于经营压力、审计费用、股权集中度的分析
Published in 郑州航空工业管理学院学报 • Jan 1, 2009
Authors:,
麻晓梦
马永强
Abstract
The surface of activated carbon cloth (ACC), based on polyacrylonitrile fibre as a precursor, was oxidised using nitric acid, ozone and electrochemical oxidation to enhance cadmium ion exchange capacity. Modified adsorbents were physically and chemically characterised by pH titration, direct titrati...
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