GC/MS法测定血液中的米氮平

目的采用液液提取-GC/MS法检测血液中米氮平。方法用0.1mol/L NaOH溶液调节血液pH值为8～9,以二氯甲烷∶环己烷(4∶6)混合溶剂作为提取溶剂,液液提取法提取血液中米氮平,外标法气相色谱/质谱联用仪定性定量分析。在2mL血中分别添加标准米氮平1、0.5、0.1μg,进行回收率测定。结果血液中添加米氮平的平均回收率为91.5%,方法的工作曲线为Y=1E+06X-16206,相关系数r=0.999 7,线性范围0.5～10μg/mL,最小检出限0.1μg/mL(S/N=46)。结论本文方法操作简便,适合于血液中米氮平的定性、定量分析,可在实际捡案中选择使用。     

N-甲基-3,4-亚甲二氧基卡西酮的确证

目的 对毒品案件样本进行N-甲基-3,4-亚甲二氧基卡西酮(bk-MDMA)确证检验.方法 采用阴离子检测、颜色反应、气质联用(GC/MS)、核磁共振(NMR)、傅立叶变换红外光谱(FTIR)等方法对毒品案件中白色晶体样本进行剖析确证.结果 快速筛查结果提示样本为具有亚甲二氧基结构的仲胺物质的盐酸盐,经GC/MS、NMR、FTIR检验,确证样本为bk-MDMA,系3,4-亚甲二氧基甲基苯丙胺(3,4-methylenedioxymethamphetmaine,MDMA)的卡西酮类似物.结论 采用本文所用方法可以对毒品案件样本中N-甲基-3,4-亚甲二氧基卡西酮成分进行确证,该药具有滥用的可能性应引起相关部门的重视.     

致伤工具微量残留物提取和检验研究

目的研究猪皮损伤创口内微量物证提取检验方法,探索致伤工具残留物成分认定方法。方法用锤子打击猪皮,并用滤纸、棉花棒提取损伤创口的微量物质,应用扫描电镜X射线能谱技术检验,确定致伤工具成分。结果猪皮残留微小颗粒可以定量地与锤子成分进行比对检验,扫描电镜X射线能谱技术可对微小颗粒成分分析。结论该方法可以作为致伤工具成分认定的参考,对致伤工具推断具有现实意义。     

RNA/DNA co-analysis from blood stains—Results of a second collaborative EDNAP exercise

A second collaborative exercise on RNA/DNA co-analysis for body fluid identification and STR profiling was organized by the European DNA Profiling Group (EDNAP). Six human blood stains, two blood dilution series (5-0.001 μl blood) and, optionally, bona fide or mock casework samples of human or non-human origin were analyzed by the participating laboratories using a RNA/DNA co-extraction or solely RNA extraction method. Two novel mRNA multiplexes were used for the identification of blood: a highly sensitive duplex (HBA, HBB) and a moderately sensitive pentaplex (ALAS2, CD3G, ANK1, SPTB and PBGD). The laboratories used different chemistries and instrumentation. All of the 18 participating laboratories were able to successfully isolate and detect mRNA in dried blood stains. Thirteen laboratories simultaneously extracted RNA and DNA from individual stains and were able to utilize mRNA profiling to confirm the presence of blood and to obtain autosomal STR profiles from the blood stain donors. The positive identification of blood and good quality DNA profiles were also obtained from old and compromised casework samples. The method proved to be reproducible and sensitive using different analysis strategies. The results of this collaborative exercise involving a RNA/DNA co-extraction strategy support the potential use of an mRNA based system for the identification of blood in forensic casework that is compatible with current DNA analysis methodology.     

SEM/EDS法和XRF法在电工胶带检验中的应用

目的探索电工胶带带基的元素检验方法。方法利用扫描电镜/能谱法（SEM/EDS）对电工胶带带基中的主体元素进行定量分析,通过SPSS软件对SEM/EDS定量分析法检测出的主体元素（Cl和Ca）相对含量进行统计分析;利用X射线荧光光谱法（XRF）对电工胶带带基中的微量元素进行定性分析。结果34个品牌红色电工胶带组成的561组样品对通过SEM/EDS定量分析法可以区分539组,区分率达到96.1%;根据XRF法定性分析测出的Mg、Al、Si、S、Ti、Sb、Ba、Pb微量元素的不同组合可将34种电工胶带分成11组,两种方法结合可使不同品牌红色电工胶带的区分率达到98.4%。结论SEM/EDS法和XRF法结合可以实现同种颜色、不同品牌电工胶带的高效区分。     

‘Everybody else just living their lives’: 9/11, race and the new postglobal literature

ABSTRACT

López's essay focuses on three questions or concerns: globalization, its aftermath and how those on the bottom survive it. During globalization's rise through the 1990s even the most virulent critics treated its eventual hegemony over the planet as a fait accompli; the only relevant questions were how it would change us, and whether those changes were desirable. Today the question is how to live now that globalization has failed us. As the aftermath of each of the global cataclysms of the last decade have amply demonstrated, it is the poor, the disenfranchised and marginalized who bear the brunt of the suffering and anxiety set in motion by the economic, political and cultural changes unleashed by globalization at the level of neighbourhoods and communities. What López calls the ‘postglobal’ emerges precisely at those moments when globalization as a hegemonic discourse stumbles, when it experiences a crisis or setback. The first section of his essay consists of a detailed exposition of the term ‘postglobal’ and its efficacy for the study of contemporary literature and culture. The rest focuses on Monica Ali's novel Brick Lane as an exemplar of what he calls the new postglobal literature.     

The Politics of Negotiating with Gangs. The Case of El Salvador

This paper explores the dynamics of negotiations between the Salvadoran government and the street gangs, called maras. The paper argues that state negotiations with criminal groups can occur when organized crime is a significant part of the social and political order. This tacit order allows a great deal of coordination between and within criminal organizations and the focus of negotiations from the state's point of view is limited to the management of violence, not the dismantling of gangs' territorial control. This article draws on seventeen in‐depth interviews with middle‐level gang leaders, government officials, and participants of the truce negotiations from 2012 to 2016; it also relies on public information published by Salvadoran journalists and government sources about the truce.     

国家司法中民间习俗的影响力评析——中国语境中哈特与德沃金之争的反思

作为一种司法改革举措,民间习俗在一些法院中得到运用,民间习俗对国家司法的影响力也就成为需要法理论证的问题。在中国语境中反思哈特与德沃金关于此问题的观点,他们的思想仍有许多启发作用。哈特通过承认规则塑造了习俗的有效性,而德沃金则通过权利原则将习俗引入国家司法。尽管哈特与德沃金意见有所分歧,但他们从不同视角提供了习俗进入司法的实践方法。     

Backjumps: writing,watching, erasing train graffiti

This article deals with mobile semiotics. First and foremost, it discusses mobility as a semiotic device. The analysis engages with backjumps, a genre of train graffiti that draws inventively on various forms of movement. The term backjump refers to any fairly elaborate graffiti piece painted on trains in traffic, notably during the trains’ extended stops at terminal stations. The examples focus on the Stockholm metro, where a rigorous anti-graffiti policy has been firmly in place: graffiti is quickly cleaned off trains and a range of strategies is implemented to keep graffiti writing under wraps. By slyly inserting graffiti into the metro system, the mobility-driven backjump practice allows graffiti writers to temporarily subvert this semiotic regime. Furthermore, the forms of semiotic mobility at play are not limited to the movement of the trains. As the present study shows, mobile backjumps are entangled in other patterns of mobility, which jointly underwrite a number of interlinked semiotic processes.