深圳经济发展的战略分析

本文对深圳经济后１５年发展具有长远意义的战略因素和战略措施进行分析和评论，并就经济发展的指导思想定位作了简要探讨。     

嵌入式框架iframe在网页设计中的应用研究

本文对嵌入式框架iframe在网页设计中的应用技巧进行了研究。从iframe的一般应用方法入手,给出了嵌入式框架与父框架之间的相互访问方法,结合ASP和数据库实现了网页中两个下拉列表框的动态关联。通过网页实例和代码,对上述方法进行了具体阐述。     

离子色谱法测定饮料和水果中的碱金属和铵离子

用吡啶-2,6-二羧酸(PDCA)为流动相的非抑制型离子色谱法同时测定碱金属和铵离子。流动相浓度为1.5mmol·L-1时,Li+、Na+、NH4+和K+峰面积的相对标准偏差(n=5)分别为0.55%、0.68%、0.69%、0.85%,检出限(μg·L-1)分别为11、39、53和130,线性范围(mg·L-1)分别为0.011￣30、0.039￣30、0.053￣30和0.130￣40。方法应用于运动型饮料、绿茶饮料、水蜜桃汁饮料、苹果和梨样品的分析,结果准确、可靠。     

环境会计信息披露的有关问题

企业作为环境污染的主要肇事者, 理应承担起治理环境污染的责任, 由此就会产生相应的环境支出和环境收益, 并因而影响企业的财务状况和经营成果。将环境活动纳入企业会计核算体系, 反映企业对自然资源的消耗和对环境的污染及其治理情况, 披露环境会计信息, 成为传统会计面临的新课题, 本文主要对环境会计信息披露的内容和方式进行探讨     

杰克·伦敦文本中的意象特征

将人物放在尖锐的矛盾冲突中 ,用人物自己的行动来表现其性格是杰克·伦敦刻画人物的主要方法。该文拟通过分析杰克·伦敦的若干代表作 ,探索他作品中深刻的文学意义和社会意义 ,即 :在充满野性的大自然里 ,人物可凭借非凡的毅力、克服种种障碍取得成功 ;在充满弱肉强食、残酷无情的野性的资本主义社会中 ,则人沦为机器 ,甚至人不如狗     

当代中国社会发展观的理论来源

当代中国社会发展的快速是举世瞩目的 ,当代中国社会发展观的独特性也是尽人皆知的。反思中国社会发展观的理论来源 ,在当代是非常必要的。当代中国社会发展观来自马克思、列宁和毛泽东的理论创造 ,而当代世界社会发展理论的参照作用也可当做一个理论借鉴。     

第四方物流在我国的发展与应用

随着近几年国内掀起的“物流热” ,第四方物流正成为一个新兴的行业热点。本文从第四方物流的定义及其特点入手 ,通过对第四方物流实践案例的剖析 ,探讨了我国发展第四方物流的可行性与局限性 ,并阐述了我国发展第四方物流的具体思路     

浅论高校后勤社会化改革中的思想政治工作

高校后勤社会化改革的新形势,要求后勤思想政治工作与时俱进,注重增强思想政治工作的实效性。本文阐述了在高校后勤社会化进程中坚持以理想信念教育为核心,充分体现以人为本的思想政治工作思路。     

提高体育专业学生英语学习能力的调查分析

对省内外七所高校不同体育专业学生英语学习能力的全面调查,发现体育专业学生英语能力与其心智发展特点有关;根据这种特点,采取相应的学法教法对策,使他们的英语学习能力得到迅速提高,并为特殊专业学生的英语教学提供了理论和实践依据。     

Exposure Reconstruction for the TCDD-Exposed NIOSH Cohort Using a Concentration- and Age-Dependent Model of Elimination

Recent studies demonstrating a concentration dependence of elimination of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) suggest that previous estimates of exposure for occupationally exposed cohorts may have underestimated actual exposure, resulting in a potential overestimate of the carcinogenic potency of TCDD in humans based on the mortality data for these cohorts. Using a database on U.S. chemical manufacturing workers potentially exposed to TCDD compiled by the National Institute for Occupational Safety and Health (NIOSH), we evaluated the impact of using a concentration- and age-dependent elimination model (CADM) (Aylward et al., 2005) on estimates of serum lipid area under the curve (AUC) for the NIOSH cohort. These data were used previously by Steenland et al. (2001) in combination with a first-order elimination model with an 8.7-year half-life to estimate cumulative serum lipid concentration (equivalent to AUC) for these workers for use in cancer dose-response assessment. Serum lipid TCDD measurements taken in 1988 for a subset of the cohort were combined with the NIOSH job exposure matrix and work histories to estimate dose rates per unit of exposure score. We evaluated the effect of choices in regression model (regression on untransformed vs. ln-transformed data and inclusion of a nonzero regression intercept) as well as the impact of choices of elimination models and parameters on estimated AUCs for the cohort. Central estimates for dose rate parameters derived from the serum-sampled subcohort were applied with the elimination models to time-specific exposure scores for the entire cohort to generate AUC estimates for all cohort members. Use of the CADM resulted in improved model fits to the serum sampling data compared to the first-order models. Dose rates varied by a factor of 50 among different combinations of elimination model, parameter sets, and regression models. Use of a CADM results in increases of up to five-fold in AUC estimates for the more highly exposed members of the cohort compared to estimates obtained using the first-order model with 8.7-year half-life. This degree of variation in the AUC estimates for this cohort would affect substantially the cancer potency estimates derived from the mortality data from this cohort. Such variability and uncertainty in the reconstructed serum lipid AUC estimates for this cohort, depending on elimination model, parameter set, and regression model, have not been described previously and are critical components in evaluating the dose-response data from the occupationally exposed populations.