公安机关监控民用爆炸物品流向的措施

公安机关为了更好地实现对民用爆炸物品公共安全管理和民用爆炸物品购买、运输、爆破作业的安全监督管理的职能,有效监控民用爆炸物品流向,应通过地方立法,对涉爆企业在民爆物品的供给、运输、需求等方面实行信息验证、公示制度。通过信息公示,增强企业涉爆行为的公开性、透明化,以预防企业从事违反危险物品管理的活动,压缩非法涉爆企业的生存空间,防止民用爆炸物品被非法爆破行为利用。     

论群体性事件处置中的说服艺术

群体性事件基本上属于人民内部矛盾.因此,公安机关在处置过程中.应最大限度地运用解决人民内部矛盾的方法和手段.群体性事件处置中说服的条件是事件态势处于相对控制之下,说服的原则主要有平等性原则、针对性原则、可信性原则和感染性原则.说服方法有标签效应法、"自己人"效应法、亲情效应法和威信效应法等.     

The Implications of Framing Effects for Citizen Competence

Social scientists have documented framing effects in a wide range of contexts, including surveys, experiments, and actual political campaigns. Many view work on framing effects as evidence of citizen incompetence—that is, evidence that citizens base their preferences on arbitrary information and/or are subject to extensive elite manipulation. Yet, we continue to lack a consensus on what a framing effect is as well as an understanding of how and when framing effects occur. In this article, I examine (1) the different ways that scholars have employed the concepts of framing and framing effects, (2) how framing effects may violate some basic criteria of citizen competence, and (3) what we know about how and when framing effects work. I conclude that while the evidence to date suggests some isolated cases of incompetence, the more general message is that citizens use frames in a competent and well-reasoned manner.     

大众化教育背景下校园文化创新研究

高等教育大众化对校园文化建设提出了新的要求。大众化教育背景下,校园文化建设应把握好主体性设计、群众性参与性和综合性评价原则,推行项目化运作,尤其是要抓好学生社团、网络和社会实践这三个载体,同时要建管协调,堵疏结合,牢牢把握校园文化建设的主动权,充分发挥校园文化的育人功能,推动校园文化健康发展。     

信访制度的历史演进:一个功能论的视角

实践永无止境,创新永无止境,研究永无止境。从历史的角度探讨信访制度的道路,寻求信访制度变迁的过程及其所遇困难的根源,对当前信访制度的改革具有极其重要的现实意义。     

Potential for the Remediation of Methamphetamine Contamination Using Ozone,

The deposition of methamphetamine within indoor environments due to illegal activities can pose a health risk for occupants. Current cleaning techniques are costly and inefficient, calling for the development of alternative remediation methods. In addition, the fate of methamphetamine in indoor environments is largely unknown, negatively impacting our knowledge on the health risks associated with contaminated dwellings. Under the conditions of this study, 97% of surface deposited methamphetamine on a paper substrate was consumed after 12 min of exposure to ozone, thus demonstrating potential for its use as a remediation agent. The reaction had an effective second‐order rate constant with an upper limit of 2.15 ± 1 × 10^?18 cm³/molecule/s, and the main product observed was phenyl‐2‐propanone (P2P) at 8.3% yield, as determined using GC/MS. Several products observed in this study have also been reported as by‐products of methamphetamine synthesis, including P2P—a known methamphetamine precursor, which indicates that their detection at a potential clandestine site is not necessarily evidence of manufacture.     

Carbon‐Based Fingerprint Powder as a One‐Step Development and Matrix Application for High‐Resolution Mass Spectrometry Imaging of Latent Fingerprints

Carbon‐based materials are often used as matrices for matrix‐assisted laser desorption/ionization mass spectrometry (MALDI‐MS) and its imaging (MALDI‐MSI). However, researchers have refrained from using carbon‐based fingerprint powder (CFP) as a matrix due to high background and contamination. In this work, the compatibility of CFP is reevaluated with MALDI‐MSI using a high‐resolution mass spectrometer (HRMS) and compared to traditional organic matrices. Relevant fingerprint compounds were easily distinguished from carbon cluster peaks when using HRMS. For fair comparison, half of a fingerprint was dusted with CFP while the other half was dusted with traditional organic matrices. All compounds studied had comparable, or higher, signal‐to‐noise (S/N) ratios when CFP was used as the matrix. Additionally, chemical image qualities closely followed the trend of S/N ratios. CFP proved to be an effective one‐step development and matrix application technique for MALDI‐MSI of latent fingerprints, when carbon cluster peaks are well separated by a HRMS.     

Enantiomeric Identification of Pregabalin by GC‐MS via Methylation and S‐TPC Chiral Derivatization

Pregabalin is a Schedule V controlled substance which is defined as the (S) enantiomer of 3‐(aminomethyl)‐5‐methylhexanoic acid. It is used legitimately to treat neuropathy in patients with diabetes as well as for epilepsy and fibromyalgia. Pregabalin is an amino acid and an amphoteric compound, which makes it difficult to analyze using the conventional GC‐MS instrumentation found in most forensic drug analysis laboratories. Problems associated with the traditional GC‐MS analysis of pregabalin include selective solubility, ring closure to the corresponding lactam in the GC injection port and/or the MS transfer line and difficulty with chiral derivatization due to the presence of a carboxylic acid moiety. Here, we show that these challenges can be overcome by methylating (capping) the carboxylic acid portion of the pregabalin molecule and converting to the corresponding methyl ester. Once the methyl ester is synthesized, chiral derivatization at the amine can be achieved to identify the controlled (S) enantiomer of pregabalin via GC‐MS.     

Alprazolam and Zolpidem in Skeletal Tissue of Decomposed Body Confirms Exposure

In several medico‐legal cases, bone samples analysis may provide the only source of toxicological information. This case study reports the analysis of a human bone specimen, belonging to a 46‐year‐old man, found 3 months after his death due to cervical–thoracic injuries in a motorcycle accident. Bone specimen was the only available material for toxicological analysis, among few skull hair and rotten skin. Analysis was performed by a newly developed and validated ultra‐high‐pressure liquid chromatography–mass spectrometry/mass spectrometry (UHPLC‐MS/MS) method, following simple and efficient sample pretreatment. The results were in accordance with the man's medical record: Alprazolam and zolpidem were found at 2.2 and 5.4 ng/g of bone, respectively. Both these drugs were prescribed to the deceased.