This paper presents a novel computational procedure for the maximum dry density of mixed soils containing oversize particles.At first,the large-scale compaction test data for mixed soils are analyzed by an artificial ...This paper presents a novel computational procedure for the maximum dry density of mixed soils containing oversize particles.At first,the large-scale compaction test data for mixed soils are analyzed by an artificial neural network to determine the main factors affecting the compaction.These factors are then imposed on a genetic programming method and a new mathematical equation emerges.The new equation has more conformity with the experimental data in comparison with the previous correction methods.Besides,the mixed soil dry density is associated with most base soil and oversize fraction specifications.With regard to the sensitivity analyses,if the mixed soil contains high percentages of oversize fraction,the mixed soil composition is governed by the specification of oversized grains,such as specific gravity and the maximum grain size and by increasing these factors,the mixed soil dry density is increased.In mixed soil with a low content of oversize,the base soil specification mainly controls the compaction behavior of mixed soil.Furthermore,if the base soil is inherently compacted with greater dry density,adding the oversize slightly improves the mixed soil dry density.In contrast,adding oversized grains to the base soil with a lower dry density produces a mixed soil with greater dry density.By increasing the maximum grain size difference between the oversize fraction and base soil,the dry density of mixed soil is enhanced.展开更多
A Risk Comparison between Lifestyle,Socioeconomic Status,and Radiation:A Cohort Study of Cancer Mortality among Japanese Nuclear Workers (J-EPISODE)Shin’ichi Kudo1,Akemi Nishide1,2,Hiroshige Furuta1,Noboru Ishizawa1,...A Risk Comparison between Lifestyle,Socioeconomic Status,and Radiation:A Cohort Study of Cancer Mortality among Japanese Nuclear Workers (J-EPISODE)Shin’ichi Kudo1,Akemi Nishide1,2,Hiroshige Furuta1,Noboru Ishizawa1,Shin Saigusa1(1.Institute of Radiation Epidemiology,Radiation Effects Association;2.College of Life Sciences,Ibaraki Christian University,Ibaraki,Japan)Abstract:The health effects of low-dose radiation exposure have been a source of controversy.One possible reason is that epidemiological studies that compare radiation risk with other factors,such as lifestyle or socioeconomic status,have been limited.The aim of this study is to conduct a comparison of the cancer risk of mortality between radiation,lifestyle habits (such as smoking),and socioeconomic status (such as years of education) among Japanese nuclear workers.We assembled a cohort of41,742 male nuclear workers in Japan who answered a lifestyle questionnaire survey conducted during 2003-2004.展开更多
猝死综合征（Sudden Death Svndrome,SDS）又称急性死亡综合征（ADS）、翻跳病（Fhp-overs Disease）等,是现代家禽养殖业中颇令人头疼的顽症之一。它不但可发生在肉仔鸡上,在火鸡、蛋鸡及肉种鸡上也均有发生。肉仔鸡3-35日龄多发;蛋鸡...猝死综合征（Sudden Death Svndrome,SDS）又称急性死亡综合征（ADS）、翻跳病（Fhp-overs Disease）等,是现代家禽养殖业中颇令人头疼的顽症之一。它不但可发生在肉仔鸡上,在火鸡、蛋鸡及肉种鸡上也均有发生。肉仔鸡3-35日龄多发;蛋鸡初产多发;肉种鸡20-28周龄（初产）时多发。展开更多
文摘This paper presents a novel computational procedure for the maximum dry density of mixed soils containing oversize particles.At first,the large-scale compaction test data for mixed soils are analyzed by an artificial neural network to determine the main factors affecting the compaction.These factors are then imposed on a genetic programming method and a new mathematical equation emerges.The new equation has more conformity with the experimental data in comparison with the previous correction methods.Besides,the mixed soil dry density is associated with most base soil and oversize fraction specifications.With regard to the sensitivity analyses,if the mixed soil contains high percentages of oversize fraction,the mixed soil composition is governed by the specification of oversized grains,such as specific gravity and the maximum grain size and by increasing these factors,the mixed soil dry density is increased.In mixed soil with a low content of oversize,the base soil specification mainly controls the compaction behavior of mixed soil.Furthermore,if the base soil is inherently compacted with greater dry density,adding the oversize slightly improves the mixed soil dry density.In contrast,adding oversized grains to the base soil with a lower dry density produces a mixed soil with greater dry density.By increasing the maximum grain size difference between the oversize fraction and base soil,the dry density of mixed soil is enhanced.
文摘A Risk Comparison between Lifestyle,Socioeconomic Status,and Radiation:A Cohort Study of Cancer Mortality among Japanese Nuclear Workers (J-EPISODE)Shin’ichi Kudo1,Akemi Nishide1,2,Hiroshige Furuta1,Noboru Ishizawa1,Shin Saigusa1(1.Institute of Radiation Epidemiology,Radiation Effects Association;2.College of Life Sciences,Ibaraki Christian University,Ibaraki,Japan)Abstract:The health effects of low-dose radiation exposure have been a source of controversy.One possible reason is that epidemiological studies that compare radiation risk with other factors,such as lifestyle or socioeconomic status,have been limited.The aim of this study is to conduct a comparison of the cancer risk of mortality between radiation,lifestyle habits (such as smoking),and socioeconomic status (such as years of education) among Japanese nuclear workers.We assembled a cohort of41,742 male nuclear workers in Japan who answered a lifestyle questionnaire survey conducted during 2003-2004.
文摘猝死综合征（Sudden Death Svndrome,SDS）又称急性死亡综合征（ADS）、翻跳病（Fhp-overs Disease）等,是现代家禽养殖业中颇令人头疼的顽症之一。它不但可发生在肉仔鸡上,在火鸡、蛋鸡及肉种鸡上也均有发生。肉仔鸡3-35日龄多发;蛋鸡初产多发;肉种鸡20-28周龄（初产）时多发。
