...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of the American Leather Chemists Association >Nonparametric Bootstrap Method for Estimating the Upper Confidence Limits of Exposure Point Concentrations of Formaldehyde in Fur Products - A Case Study of Tongxiang City, China
【24h】

Nonparametric Bootstrap Method for Estimating the Upper Confidence Limits of Exposure Point Concentrations of Formaldehyde in Fur Products - A Case Study of Tongxiang City, China

机译：非参数Bootstrap方法估算毛皮产品中甲醛的接触点浓度上限置信上限-以桐乡市为例

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The distribution characteristics of the formaldehyde (FA) content of fur products produced in Tongxiang City over three consecutive years (2014-2016) were analyzed by the Lilliefors test, quarterback robust statistical method, and kernel density estimation. The bootstrap simulation sampling method was used to calculate the upper confidence limits (UCL) of the exposure point concentration (EPC) of FA. The robustness and rationality of the UCL estimation were verified by the distribution of the mean value of each bootstrap sample dataset. The results showed that their distributions were close to normal distribution but were highly skewed. The one-sided 95% UCL on the mean were 95.45 mg/kg, 93.02 mg/kg and 86.64 mg/kg, which decreased year by year. The Wilcoxon rank sum test indicated that the population distribution of the FA content in 2016 showed a structural improvement over those of the previous two years.
机译：通过Lilliefors检验，四分卫稳健统计方法和仁密度估计，分析了桐乡市连续三年（2014-2016年）生产的毛皮产品中甲醛（FA）含量的分布特征。自举模拟采样方法用于计算FA的暴露点浓度（EPC）的置信上限（UCL）。通过每个引导样本数据集的平均值分布，验证了UCL估计的鲁棒性和合理性。结果表明，它们的分布接近正态分布，但高度偏斜。单侧95％UCL平均值为95.45 mg / kg，93.02 mg / kg和86.64 mg / kg，逐年下降。 Wilcoxon秩和检验表明，2016年FA含量的人口分布比前两年有所改善。

著录项

  • 来源
  • 作者

    Yuan Xuzheng; Wang Xuechuan; Lu Weina; Jiang Sujie;

  • 作者单位

    Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Shaanxi, Peoples R China|Jiaxing Fur & Footwear Res Inst, Tongxiang 314500, Peoples R China;

    Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Shaanxi, Peoples R China;

    Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Shaanxi, Peoples R China;

    Jiaxing Fur & Footwear Res Inst, Tongxiang 314500, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号