毛泽东思想对新形势下公安群众工作的指导意义

群众工作是公安工作的一项重要课题,也是基层公安派出所基础工作的一项重要课题。现阶段公安群众工作中还存在诸多与群众路线不相适应的问题。毛泽东同志对群众路线的论述,对解决基层公安群众工作存在的问题、加强当前公安基础工作具有重要的指导意义。     

在践行群众路线中不断加强党的作风建设

党的群众路线教育实践活动,是我们党在新时期坚持树立群众观点、转变干部作风所开展的重要活动。活动要求把党的作风建设摆在突出位置,在践行群众路线中不断加强党的作风建设,从而解决当前作风建设当中存在的突出问题,进一步密切党群关系。     

论新媒体环境下大学生思想政治教育面临的新机遇

新媒体环境下,大学生思想政治教育既面临着新的挑战,也面临新的机遇。各类新媒体给高校思想政治教育客体的学习生活带来了积极影响,极大地丰富了思想政治教育的内容,增强了其时效性、互动性和针对性,拓宽了思想政治教育的范围和空间,有利于思想政治教育新的方式方法的运用。     

论大数据技术对公安工作的影响

大数据具有的4V特性决定了大数据技术将从多个角度和层面丰富侦查方式,提高了各类案件的侦破效率;以高科技预防高科技犯罪,做到打击迅速、减少损失,还百姓以现实的安全感;整合多种资源,引导社会运转,预见行为规律,构建令百姓满意的和谐治安环境;让公安工作始终开展的公正透明,百姓享有现实与虚拟环境里的平等权利;提供高效的管理手段和模式,不断推动社会管理的创新。全面认识大数据技术对公安工作的影响,有利于推动公安工作上台阶,不断实现新的突破。     

“同在蓝天下”红领巾社团活动设计和策略研究

文章总结了徐江小学多年实践,全面提炼介绍了该小学“同在蓝天下”红领巾社团活动的“三联四化”活动模式、“小先生制”管理模式以及完善的组织机制、多维度的评价体系、丰富的活动体验,认为红领巾社团活动是提高队员自主、自信、自助能力的有效途径.     

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.     

A Fatal Case of Poisoning with Fentanyl Transdermal Patches in Japan

Fentanyl transdermal patches have been used to treat cancer‐ and noncancer‐related chronic pain. However, its inappropriate or illegal application may cause fatal poisoning. We herein present the case of a Japanese woman in her 40s who was found dead with seven 25‐μg/h fentanyl transdermal patches on her body. We established a detailed toxicological analysis procedure to quantify fentanyl, and its metabolite norfentanyl, and other drugs (acetaminophen, allylisopropylacetylurea, celecoxib, estazolam, promethazine, and sertraline) in human whole blood by ultra‐high‐performance liquid chromatography–tandem mass spectrometry. The measured fentanyl and norfentanyl concentrations in the femoral and cardiac blood were 0.051 and 0.072 μg/mL and 0.033 and 0.076 μg/mL, respectively. The decedent's fentanyl concentrations were consistent with previously reported postmortem blood levels for fatal cases of poisoning by fentanyl transdermal patches. Based on the decedent's case history, autopsy findings, and toxicological analyses, the cause of death was identified as intoxication with transdermal fentanyl.