期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
求解拱坝水平地震惯性力的微元体法 被引量:1
1
作者 王兴然 《水力发电》 北大核心 1989年第2期27-31,共5页
本文基于微元体的概念,提出了求解拱坝水平地震惯性力的解析方法。实例分析表明,此方法比规范中的数值法方便、精确,同样可推广到重力坝和水闸的惯性力分析中去。
关键词 拱坝 地震惯性力 微元体法
下载PDF
Distribution and Relationships of Seven Trace Elements (Cr, Fe, Mn, Ni, Co, Cu and Zn) in Freshwater Fish from Five French Fishing Areas
2
作者 Laurent Noel Sandrine Millour +3 位作者 Rachida Chekri Mathilde Merlo Jean-Charles Leblanc Thierry Guérin 《Journal of Food Science and Engineering》 2014年第3期131-147,共17页
The concentrations of seven essential trace elements in 149 freshwater fish from eight fish species (European eel, bream, common carp, European catfish, roach, perch, pike and pikeperch) from five different French f... The concentrations of seven essential trace elements in 149 freshwater fish from eight fish species (European eel, bream, common carp, European catfish, roach, perch, pike and pikeperch) from five different French fishing areas from contaminated and control sites were measured by inductively coupled plasma mass spectrometry after microwave digestion under pressure. Differences in the concentration of elements in the muscles of these species were examined and the mean levels were compared for each species with previous French and European studies. The condition factor and the differences between the control and contaminated sites and between predatory and non-predatory groups, with respect to the concentration of these elements, were also studied. 展开更多
关键词 Trace elements freshwater fish occurrence data inductively coupled plasma-mass spectrometry (ICP-MS).
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部