社会主义初级阶段与新民主主义社会比较研究

正确地认识社会主义初级阶段与新民主主义社会的区别是一个重要的理论问题和现实问题。二者的区别主要在于:构成二者政权组织的阶级基础不同;二者的生产力发展水平有着质的差异;二者的经济运行体制存在着明显的互逆性;公有制经济在两者中的地位不同;二者的主要矛盾以及由主要矛盾所决定的主要任务不同。     

反相高效液相色谱法测定沙棘油中维生素E的含量

目的：采用反相高效液相色谱法测定沙棘油中维生素E的含量。方法：C18－ODS柱为色谱柱、甲醇－水（98：2）为流动相，流速为1．5ml/min，检测波长：280nm。结果：线性范围0．9－6．0μg(r=0.9998)，平均回收率为99．17％，RSD为1．48％（n=5)，结论：本法操作简便，准确可靠。     

论客观性证据审查应用模式

构建客观性证据审查应用模式,在证明事实的刑事司法证明活动中,以客观性证据为审查重心,凭借其可靠的稳定性和关联性的证据特性,确证案件基础事实,并优先运用客观性证据进而引导全案证据审查判断形成梯次递进的结构性事实的证明体系,通过逐次验证各项犯罪事实要素来确证整个犯罪事实。客观性证据审查应用模式避免了以口供为主导的审查模式缺陷,具有发现证据上的矛盾和事实疑点的能力,在防止错案发生上有滤错功能。在司法实践中,应建立起保证模式发挥作用的机制和办法,确立适用规则,从制度上落实疑罪从无的司法原则。     

固相萃取/气相色谱法检测全血中的扎来普隆

目的建立全血中扎来普隆的固相萃取/气相色谱检测方法。方法采用Oasis HLB固相萃取柱,5%甲醇水淋洗,二氯甲烷洗脱,GC/NPD定量检验,GC/MS定性检验,并对检测条件进行考察。结果扎来普隆与血中杂质分离良好,平均萃取回收率达89%以上,最低检出限20ng/mL,50～2000ng/mL内线性良好,相关系数R2=0.9945,日内RSD为3.1%～4.2%,日间RSD 5.8%～6.7%。结论该方法操作简便快速,提取回收率高,重现性好,提取物杂质少,可用于实际案件的检验。     

Availability of target odor compounds from seized ecstasy tablets for canine detection

The aim of this study was to compare seized samples of 3,4-methylenedioxy-N-methylamphetamine (MDMA) pills, used to train law enforcement detection canine teams, to determine what differences exist in the chemical makeup and headspace odor and their effect on detectability. MDMA solutions were analyzed by liquid chromatography-mass spectrometry. Analysis of these samples showed a wide variance of MDMA (8-25%). Headspace SPME-GC/MS analysis showed that several compounds such as 3,4-methylenedioxyphenylacetone and 1-(3,4-methylenedioxyphenyl)-2-propanol are common among these MDMA samples regardless of starting compound and synthesis procedure. However, differences, such as the level of the various methylenedioxy starting compounds, were shown to affect the overall outcome of canine detection, indicating the need for more than one MDMA training aid. Combinations of compounds such as the primary odor piperonal in conjunction with a secondary compound such as MDP-2-OH or isosafrole are recommended to maximize detection of different illicit MDMA samples.     

Differentiation of unevaporated gasoline samples according to their brands, by SPME-GC-MS and multivariate statistical analysis

One of the aims of fire investigations is to identify associations among accelerants according to their source. In this study, 50 gasoline samples--representing five brands--were analyzed using solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS). Chemometric procedures, such as principal component analysis (PCA) and discriminant analysis (DA), were applied to a data matrix obtained by the target compound chromatogram method, to discriminate samples according to their brand. PCA was successful in finding a natural grouping of samples according to their brand, suggesting that aromatic compounds were more useful than aliphatics for the purpose of this study. DA, if applied to aromatic compounds, gave both a classification ability and a prediction ability of 100%. The outstanding results obtained by this work provide the basis of a data matrix that could be used in real cases of arson to link a sample of unevaporated gasoline to its brand or refinery.     

液相色谱-串联质谱法分析生物检材中的河豚毒素

目的建立血液、尿液以及肝中河豚毒素(tetrodotoxin,TTX)的液相色谱-串联质谱分析方法,并进行方法学验证。方法血液、尿液和肝用1%乙酸甲醇溶液去蛋白后,上清液用固相萃取法净化,LC-MS/MS检测。结果血液、尿液和肝中TTX检出限分别为2ng/mL、2ng/mL和4ng/g。血液和尿液在4～100ng/mL、肝在5～100ng/g的范围内线性关系良好,相关系数r≥0.9973;日内精密度和日间精密度均在12.80%以内;回收率大于47.2%。结论所建方法高效、灵敏、准确,可以为河豚毒素中毒的法医学鉴定、临床诊治以及食品安全的监控提供技术保障。     

固相微萃取在苯丙胺类毒品分析中的应用

固相微萃取(solid phase microextraction, SPME)作为一种新型样品前处理技术已受到广泛关注。由于SPME集采样、萃取、浓缩、进样于一体,克服了传统样品前处理技术步骤繁琐、耗时耗力、所需样品量大等诸多缺点,因此在对生物样品中毒品等目标物的分析中具有巨大的应用潜力。本文以纤维SPME技术为例,综述了该技术在苯丙胺类毒品分析中的研究进展,并对其发展方向进行了展望。     

血、尿中常见吩噻嗪类药物的高效液相色谱分析

吩噻嗪类安眠镇静药物易受光、热分解,气相色谱分析法受一定限制。而采用反相离子对液相色谱技术,使七种常见吩噻嗪类药物得到较好的分离。使用紫外及荧光分光光度计测定,可作为血、尿中此类药物的快速定性、定量分析方法之一。本法已在刑事中毒案件与临床抡救化验中应用。     

关于我国转型时期价值观（哲学）研究状况的报告

我国学界关于价值观(哲学)的研究、发展伴随着改革开放和社会转型,大体走过了从"主义"之争到"问题"意识的觉醒再到各种"学说"呈现的历史,表现出注重把价值观(哲学)研究建立在马克思主义哲学基础之上、注重对改革开放实践中提出的价值问题的研究以及注意挖掘中华传统文化的价值资源等特色;应针对以往价值观研究中存在的问题,从满足社会实践的迫切需要和推进价值哲学的进一步发展出发,建构、完善我国社会主义初级阶段价值体系的基本原则、框架和内容.