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231.
目的利用GC/MS、GC/NPD与固相萃取(SPE)技术相结合,建立血液中苯丙胺类毒品的定性定量分析方法。方法采用Bond—ElutCerti{y固相柱、甲醇淋洗、二氯甲烷/异丙醇/氨水(78/20/2)洗脱固相萃取分离提取,比较了不同PH体系、稀释状态、洗脱溶剂对提取回收率的影响,建立血液中苯丙胺类毒品的GC/MS、GC/NPD定性定量分析方法。结果以GC/NPD分析AM、MA、MDA和MDMA浓度在15ng/mL-2000ng/mL、10ng/mL~1600ng/mL、20ng/mL-3000ng/ml、20ng/mL-3000ng/mL范围内线性关系良好,AM、MA、MDA和MDMA的检测限分别为10ng/mL、8ng/mL、15ng/mL、15ng/mL,方法平均回收率大于85%,标准偏差小于5%,GC/MS-Scan检测限分别为40ng/mL、32.0ng/mL、60.0ng/mL、60.0ng/mL。结论此方法可满足苯丙胺类毒品滥用者的血液定性定量分析。 相似文献
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孟金梅 《北京政法职业学院学报》2010,(4):84-90
第十八届国际艾滋病会议于2010年7月在维也纳召开。会议主要讨论了同性恋、性工作和吸毒非罪化问题及关于艾滋病强制检测、艾滋病隐私和艾滋病传播犯罪问题。此外,有可能开发成功降低艾滋病感染风险的药物和有效预防艾滋病的疫苗。中国代表团参加会议并介绍了我国艾滋病防治的情况。 相似文献
234.
Mikel Buesa Joost Heijs Thomas Baumert Javier González Gómez 《Terrorism and Political Violence》2013,25(4):489-509
This article attempts to measure the direct costs that the terrorist attacks of 3/11 had on the economy of the region of Madrid. The evaluation has been made applying conservative criteria, and the results obtained have to be considered as minimum. The result indicates that the terrorist attacks caused a loss of nearly 212 million euros to the regional economy of Madrid, equivalent to 0.16 percent of the regional GDP (0.03 of the national GDP). This confirms that the immediate economic dimension of a terrorist attack such as the one of 3/11—apart from human catastrophic consequences—is relatively low. 相似文献
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为探究中华鳖天然免疫的分子机制,针对TLR2(Toll-like receptor 2)保守区设计兼并引物,从中华鳖脾cDNA中扩增出了740bp的目标序列。测序和序列分析结果表明,该序列包含富含半胱氨酸型C端结构域、跨膜结构域和TIR结构域;与斑马鱼、鸡等脊椎动物相应的TLR2序列相似性为60.5%~74.4%。采用荧光定量PCR检测中华鳖感染嗜水气单胞菌后各组织TLR2mRNA表达的变化,结果显示,感染后第24小时,中华鳖脾和外周血TLR2mRNA相对表达水平升高,其中外周血中的增幅最显著,是对照组的8.57倍;中华鳖外周血经4μg/mL酵母聚糖刺激后,第2小时TLR2mRNA相对表达水平较高。首次获得了中华鳖TLR2部分cDNA序列,并分析了不同刺激物对中华鳖TLR2mRNA转录的影响。 相似文献
237.
《国际相互影响》2012,38(3):352-364
Recent studies examining the political impact of individuals' connections to the victims of international violence find these ties have a powerful effect on people's attitudes and feelings. How reliable, however, are self-reported claims of ties to a conflict's casualties? Using data from 9/11 and the Iraq War, I examine these claims, analyzing: 1) their influence on both public assessments of foreign policy and voting behavior, 2) whether critical demographic and political factors predict the likelihood of individuals reporting a tie to a conflict casualty, 3) the predicted, aggregate likelihood of survey respondents having connections to conflict victims, and 4) the theoretical distinction between actual vs. perceived casualty connections. The results strongly support the use of casualty connection data for understanding individuals' responses to international violence, and encourage future applications of social network approaches to the study of war and politics. 相似文献
238.
Effect of Aging and Surface Interactions on the Diffusion of Endogenous Compounds in Latent Fingerprints Studied by Mass Spectrometry Imaging, 下载免费PDF全文
The ability to determine the age of fingerprints would be immeasurably beneficial in criminal investigations. We explore the possibility of determining the age of fingerprints by analyzing various compounds as they diffuse from the ridges to the valleys of fingerprints using matrix‐assisted laser desorption/ionization mass spectrometry imaging. The diffusion of two classes of endogenous fingerprint compounds, fatty acids and triacylglycerols (TGs), was studied in fresh and aged fingerprints on four surfaces. We expected higher molecular weight TGs would diffuse slower than fatty acids and allow us to determine the age of older fingerprints. However, we found interactions between endogenous compounds and the surface have a much stronger impact on diffusion than molecular weight. For example, diffusion of TGs is faster on hydrophilic plain glass or partially hydrophilic stainless steel surfaces, than on a hydrophobic Rain‐x treated surface. This result further complicates utilizing a diffusion model to age fingerprints. 相似文献
239.
ABSTRACTRetention of public child welfare (PCW) workers is the focus of much scholarly research. Examinations of the topic have ranged from assessments of workers’ background to job factors and attitudinal components about the workplace. Unlike most studies, the present study uses agency administrative data on retention. In it, 502 PCW workers responded to a point-in-time survey covering a wide range of topics including job satisfaction, commitment to child welfare, perceptions of culture and climate, Title IV-E status, and demographic variables. While Title IV-Es were more likely to leave the agency, several significant interactions between Title IV-E and retention status showed that Title IV-Es who left the agency had significantly lower supervisor satisfaction and influence than Title IV-Es who stayed; and lower efficacy scores than non-Title IV-Es who left. No such differences were found for non-Title IV-E stayers and leavers. Implications for these differences for county agencies and universities are discussed. 相似文献
240.
Gabriela Kennedy 《Computer Law & Security Report》2018,34(1):178-185
This column provides a country-by-country analysis of the latest legal developments, cases and issues relevant to the IT, media and telecommunications' industries in key jurisdictions across the Asia Pacific region. The articles appearing in this column are intended to serve as ‘alerts’ and are not submitted as detailed analyses of cases or legal developments. 相似文献