基于DEA模型的生活垃圾转运站产能及效率评价的初步研究

结合最新颁布实施的CJJ/T 156—2010生活垃圾转运站评价标准,选取相应评价指标,采用DEA模型对垃圾转运站的产能及效率进行评价,并通过MATLAB程序,使评价模型操作简单化。     

Mitochondrial DNA haplogroup associated with sperm motility in the Han population

In this study, we aimed to determine whether the main mitochondrial DNA （mtDNA） haplogroups of the Han people have an impact on spermatozoa motility, We recruited 312 men who were consecutively admitted to two affiliated hospitals of College of Medicine, Zhejiang University from May 2011 to April 2012 as part of fertility investigations. Semen and whole blood samples were collected from the men. We determined the mtDNA haplogroups by analysing the sequences of mtDNA hypervariable segment I and testing diagnostic polymorphisms in the mtDNA coding region with DNA probes, No significant differences were found in the clinical characteristics of the mtDNA haplogroup R and non-R （P〉0.05）. Our results suggest that mtDNA haplogroup R is a strong independent predictor of sperm motility in the Han population, conferring a 2.97-fold （95% confidence interval： 1.74-4.48, P〈0.001） decreased chance of asthenozoospermia compared with those without haplogroup R.     

同时测定水中10种卤代有机挥发物的顶空气相色谱法

目的建立同时测定生活饮用水中10种挥发性卤代化合物的顶空-气相色谱方法。方法水中10种有机物经CP-Sil 5CB毛细管色谱柱分离,电子捕获检测器(ECD)检测,外标法定量。结果 10种有机物的线性相关系数为0.999 1～0.999 9,平均加样回收率为89.3%～105%(n=6),RSD为1.5%～5.5%,最低检出浓度为0.30～20.16μg/L。结论该方法操作简单,快速,准确,灵敏度较高,适用于水中卤代有机物的测定。     

轻中度癌痛患者的回顾性记忆与前瞻性记忆功能损害的临床研究

目的 探讨轻中度癌痛患者的回顾性记忆（RM）与前瞻性记忆（PM）功能，了解癌痛对记忆功能的影响。方法 收集轻中度癌痛患者和健康对照者各37例，进行总体认知评估及RM和PM问卷调查。结果癌痛组简易精神状态量表得分为24.19±3.20，低于健康对照组的27.54±1.83（P＜0.01）；PM得分为14.76±4.53，高于健康对照组的9.59±1.38（P＜0.01）；癌痛组RM得分略低于健康对照组（12.78±4.27 vs. 12.91±5.12），差异无统计学意义（P＞0.05）。结论 轻中度癌痛患者存在总体认知功能的损害，以记忆功能损害较为明显，其中以PM损害为主。