用串联质谱法提高毒鼠强的检测灵敏度

目的建立一种能避免生物样品中杂质的干扰,提高毒鼠强检测灵敏度的方法。方法应用串联质谱法,对生物样品中的毒鼠强进行检验研究。结果在样品无需净化的情况下,以m/z240为母离子,当激活电压在0.8V左右时,毒鼠强二次电离的离子碎片适中,质谱谱图清晰;此时进样量为1.0ng的毒鼠强,其信噪比(s/n)为87,经与全扫描质谱法进行比较灵敏度大为提高。结论该方法能有效提高毒鼠强检测灵敏度,适用于同类案件检验。     

大众传媒:军营文化建设的重要力量

作为传播信息的工具和传播文化的载体，大众传媒在加强军营文化建设方面具有突出的特点和独到的优势：营造浓厚的“文化场”，让官兵在潜移默化中提高政治思想水准和科学文化素质；发挥导向作用，帮助官兵在复杂多元的文化现象中作出正确的判断和选择；对军队文化建设工作实施有力有效的指导作用。真正做到如此，关键取决于领导的认识到位和媒介工作者文化自觉的增强。     

从“以人为本”的视角看大众文化的先进性

对大众文化的评价是一个颇多争议的问题。合理评价大众文化首先必须摈弃精英主义的视角,真正确立"以人为本"的正确视角。从这一视角出发,大众文化的先进性体现在:其一,大众文化提升了普通大众的文化主体地位;其二,大众文化蕴含着对人的感性欲求的尊重。现实中的大众文化虽有种种不足,但其内在的先进性决定了我们应该以建设性的态度去面对它。     

生物组织中甲胺磷及其异构体的串联质谱法分析

目的建立可用于生物体内甲胺磷及其异构体O,O二甲基氨基硫代磷酸酯检验的高灵敏度方法。方法应用串联质谱法(GCMS/MS),对生物样品中的甲胺磷及其异构体进行检验研究。结果选择质荷比为141的离子为母离子,击发电压为0.8V时,甲胺磷及其异构体二次电离碎片适中,质谱谱图清晰。50%甲胺磷乳油进样量为0.1ng时,甲胺磷及O,O二甲基氨基硫代磷酸酯峰的信噪比分别为436、773。经实验,甲胺磷检测限为20pg。结论所拟方法能有效提高甲胺磷的检测灵敏度。     

群体性突发事件网络舆情的特点及演变规律研究

随着网络的发展,现实中的群体性突发事件极容易变成网络舆情,对应对群体性突发事件带来了严峻的挑战。要增强新形势下应对群体性突发事件的能力,必须探明群体性突发事件网络舆情的演变规律。群体性突发事件网络舆情的演变包括生成、爆发、稳定、终结四个阶段。在这个演变过程中,群体性突发事件网络舆情都处于动态变化中。     

基层检察机关廉政文化建设研究

检察机关作为国家的法律监督机关,既肩负着反腐倡廉的历史使命,又面临着自身建设与反腐工作的巨大挑战。在开展党的群众路线过程中,一些基层检察机关不同程度地暴露出诸如作风不正、纪律不严、执法不实、行为不廉等与党的群众路线不相符甚至对立等问题,一些领导干部、检察人员的形式主义、官僚主义、享乐主义和奢靡之风依然盛行,这既严重损害了检察机关的良好形象和执法公信力,也严重阻碍了检察工作的健康持续发展。因此,检察机关需凝聚反腐工作共识,着力加强检察廉政精神文化、行为文化、制度文化和物态文化建设,努力营造以廉为荣、以贪为耻的检察机关廉政文化氛围。     

Fatal Intoxication with Methoxetamine

Methoxetamine (MXE) is a new synthetic drug of abuse structurally related to ketamine and phencyclidine. A case of a 29-year-old male with acute toxicity related to the analytically confirmed use of MXE is reported. The man was found dead at his residence. Biological material was analyzed using liquid chromatography–tandem mass spectrometry. The concentration of MXE in urine of the deceased was 85 μg/mL. Despite the vial containing the blood sample being destroyed during transportation and the blood leaking out into the cardboard packaging, the blood level of MXE was estimated. After determination of the cardboard grammage (approx. 400 g/m³) and the mean mass of the blood obtained after drying (0.1785 ± 0.0173 g per 1 mL), the estimated blood concentration of MXE was found to be 5.8 μg/mL. The high concentration of MXE in blood and urine and the circumstances of the case indicate an unintentional, fatal intoxication with this substance.     

Is There an Association Between the Body Mass Index and Interpersonal Violent Behavior?

An inverse relationship between the body mass index (BMI) and the risk of completed suicide was shown in several studies. Furthermore, it is suggested that obesity might be associated with a lower risk for violent criminality. Therefore, the aim of this study was to analyze whether a higher BMI is associated with a lower risk for being arrested due to violent behavior in a sample of 43,992 male offenders. Multinomial logistic regression analysis was applied to assess the relationship between different BMI categories and categories of committed crime as outcome variable by including various covariates. Our results indicated that compared to a normal BMI a higher BMI was associated with a significantly lower risk for being arrested in different crime categories associated with interpersonal violence, such as crimes against life and limb (for example: odds ratio = 0.60, CI 95%: 0.52–0.69 for 30–34.9 kg/m²).     

Ancestry and BMI Influences on Facial Soft Tissue Depths for A Cohort of Chinese and Caucasoid Women in Dunedin,New Zealand

This study measured and assessed facial soft tissue depths (FSTDs) in adult female Chinese and New Zealand (NZ) Europeans (Caucasoids). Ultrasound was used to obtain depths at nine landmarks on 108 healthy subjects (51 Chinese, 57 NZ European), erect positioned, of same age group (18–29 years). Height and weight were also recorded. Statistical analysis focused on comparison of tissue depth between the two ancestry groups and the influence of Body Mass Index (BMI) (kg/m²). Results showed mean depth differences at Supra M2 and Infra M2 landmarks significantly greater for Chinese than Caucasoid women for all three BMI Classes (BMI <20, 20 ≤ BMI < 25, 25 ≤ BMI < 30), even BMI <20. For both groups BMI positively correlated with FSTD values at all landmarks except Labrale superius. This study enabled ancestry and BMI influence on FSTDs to be observed and compared for two distinct groups. Results add to knowledge about facial tissue depth variation.     

气相色谱/质谱检验合成大麻素K3中AKB48

目的建立较为快速准确的合成大麻素K3中AKB48的气相色谱/质谱检验方法。方法对进样口温度、初始柱温、柱流速及质谱采样率等4项色谱及质谱实验参数进行考察优化。结果 GC/MS检验合成大麻素K3中AKB48的优化条件为:进样口温度280℃,柱初始温度80℃,柱流速为2.0ml/min,质谱采样率为2。结论该方法具有快速、准确、灵敏等优点,可用于K3中AKB48的定性检验鉴定。