对宗教"五性"的再认识

宗教“五性”是马克思主义宗教观与我国社会宗教实际相结合的产物 ,是马克思主义宗教理论在新的历史条件下的坚持和发展 ,是完善和正确执行党的宗教政策的基本点。我国正处于社会转型时期 ,对宗教“五性”的再认识 ,是我们进一步深化对国情的再认识。     

“众创时代”共青团院校创业教育的发展

在大众创业、万众创新的时代,共青团院校应该通过发挥团青引领优势、创新优势、桥梁优势、覆盖优势等,大力发展创业教育。通过培养大学生、青年、团员的创新创业能力,为社会经济繁荣和社会治理发展做出贡献。当然,共青团院校创业教育要更好地发挥其独特作用,还应该在争取党和政府制定激励共青团院校创业教育的政策、探索"全员创业教育"的新型机制、师生树立多元化创业教育的新观念、将创新创业贯穿人才培养的全过程、与青年企业及机构建立"无缝对接"以及加大创业教育的国际交流与合作等方面做出努力。     

再论公安工作与群众路线

坚持和贯彻群众路线是公安机关的优良传统和特色。在新世纪新形势下,公安机关必须继承和发展群众路线,解放思想,与时俱进,不断创新群众路线,从而更加有效地发挥职能作用。     

转型期劳工群体性事件的客观成因

当前,我国正处在一个社会转型期,这一时期的劳工群体性事件呈急剧增加态势。此类事件的频繁爆发有其深刻的客观原因,主要表现在经济、政治和社会三个方面。     

提升中俄经贸关系需要媒体助阵

从新闻传播的真实性与公正性原则出发,探讨媒体在中俄战略伙伴关系中发挥的三种作用:“尊重事实避免虚假新闻”、“摒弃炒作负面新闻”和“引导沟通充当经贸桥梁”。目的在于从大众传媒领域找到推进中俄战略伙伴关系的新动力。     

The Effect of Temperature and Exposure Time on Stability of Cholesterol and Squalene in Latent Fingermarks Deposited on PVDF Membrane

Cholesterol and squalene are fatty materials of latent fingermarks that can be utilized for dating methodologies and visualization techniques. Previous studies have suggested these compounds undergo degradation in fingermarks as a function of time (days) and light at ambient temperature. However, studies assessing how their composition changes at low and high temperatures over short periods of time (hours) have not been published previously. Here, we performed quantitative analysis of cholesterol and squalene in natural fingermark residue using PVDF membrane, after exposure to a range of temperatures (−20 to 100°C) for 4 and 8 h. We found that levels of both fatty materials remained constant at −20 to 60°C, but both showed significant reduction at 100°C, over short exposure times. These results indicate that cholesterol and squalene are detectable at −20 to 60°C, whereas at 100°C or higher, both are lost due to rapid thermal degradation.     

Sample Mining and Data Mining: Combined Real-Time and Retrospective Approaches for the Identification of Emerging Novel Psychoactive Substances

Novel psychoactive substances (NPS) are synthetic drugs that pose serious public health and safety concerns. A multitude of NPS have been identified in the United States, often implicated in forensic investigations. The most common and effective manner for identifying NPS is by use of mass spectrometry and the true utility lies within nontargeted acquisition techniques. During this study, a liquid chromatography quadrupole time-of-flight mass spectrometry (LC-QTOF-MS) assay was developed, validated, and implemented for forensic toxicology testing. A SCIEX TripleTOF™ 5600 + with SWATH^® acquisition was used. Resulting data were compared against an extensive library database containing more than 800 compounds. The LC-QTOF-MS assay was applied to the reanalysis of biological sample extracts to discover emergent NPS. More than 3,000 sample extracts were analyzed, and more than 20 emerging NPS were detected for the first time. Among these were isopropyl-U-47700, 3,4-methylenedioxy-U-47700, fluorofuranylfentanyl, N-methyl norfentanyl, 2F-deschloroketamine, 3,4-methylenedioxy-alpha-PHP, eutylone, and N-ethyl hexedrone.     

Combined Collection and Analysis of Inorganic and Organic Gunshot Residues

Gunshot residue (GSR) analysis and their interpretation provide crucial information on a criminal investigation involving the use of firearms. To date, several approaches have been proposed for the implementation of a combined sampling and analysis of inorganic (IGSR) and organic GSR (OGSR). However, it is not clear at this stage if concurrent analyses of both types of residue might be detrimental to the analysis of IGSR currently applied in forensic laboratories. Thus, this work aims to compare and evaluate three different protocols for the combined collection and analysis of IGSR and OGSR. These methods, respectively, involve the use of a modified stub (with two halves, one for the detection of IGSR and the other for the analysis of OGSR); the sequential recovery of GSR with two stubs mounted with different adhesives (double-sided carbon tape and Tesa® TACK) and the sequential analysis of IGSR and OGSR from a single carbon stub following carbon deposition. The detection of IGSR was carried out using SEM-EDX, while OGSR analysis was performed using ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS). Obtained results for experiments performed using Geco Sinoxid^® ammunition indicated that sequential analysis was the most suitable protocol for the combined collection and analysis of both IGSR and OGSR. A higher number of inorganic (characteristic and consistent) particles and higher concentrations of ethylcentralite, N-nitrosodiphenylamine, diphenylamine, and nitroglycerin were recovered with this method.