警察实用手枪射击训练“三元组合模式”

依据警察实战手枪射击枪战特点,把警察实战射击场景归纳为＂受训者主体动作＂、＂实战场景中介＂、＂目标客体＂这三个决定着警察实战胜负的基本技术元素,以此为基础来定义三元组合训练模式的概念,确定三元组合训练模式的目标,分析三元组合训练模式的内容和实施。     

SBS改性沥青防水卷材施工的环境污染及防治

SBS改性沥青防水卷材的施工方法一般采用热熔法 ,在施工过程中 ,产生大量有毒气体。为了保护环境及施工人员的身体健康 ,研究制备一种冷胶粘剂 ,将通常的SBS改性沥青防水卷材热熔法施工改造为绿色冷施工 ,经测定 ,该冷胶粘剂达到有关标准要求     

欧美转基因食品法律管制制度比较研究

转基因食品自问世以来,其安全性倍受争议。在对其进行法律管制方面,形成了欧盟和美国两大阵营,在管制理念、管制方法和对消费者“知情权”的态度方面形成了鲜明的反差,并引起了双方在转基因食品国际贸易中的激烈对抗。对比、分析两大阵营的法律管制制度,能够为我国相关立法提供有益的借鉴。     

马鼻肺炎疫苗的研究现状及前景分析

介绍了3类马鼻肺炎疫苗的制备工艺、自身特点,分析比较了各类型疫苗的优缺点,并对其商品化进行了可行性分析,指出传统疫苗(灭活疫苗、减毒疫苗)是目前传染病防治的主要产品。虽然新型疫苗(病毒活载体疫苗)还处在研究阶段,但终将成为马鼻肺炎疫苗未来发展的主要方向。     

Determination of firing distance. Lead analysis on the target by atomic absorption spectroscopy (AAS)

This paper reports a method for the determination of the firing distance. Atomic absorption spectroscopy (AAS) was used to determine the lead (Pb) pattern around bullet holes produced by shots on test targets from the gun. Test shots were made with a Colt 38 Special at 5, 10, 20, 25, 30, 35, 40, 45, 50, 60, 80, and 100 cm target distance. The target was created with sheets of Whatman no. 1 paper on a polystyrene support. The target was subdivided into three carefully cut out rings (1, 2, and 3; with external diameters of 1.4 cm; 5 cm; 10.2 cm, respectively). Each sample was analyzed with graphite furnace AAS. Lead values analysis performed for each ring yielded a linear relation between the firing distance (cm) and the logarithm of lead amounts (microg/cm(2)) in definite target areas (areas 2 + 3): [ln dPb(2+3) = a(0) + a(1)l]; where dPb(2+3) = lead microg/cm(2) of area 2 + 3; a(0) and a(1) are experimentally calculated; l = distance in cm.     

Modified Shotguns in Turkey from 2006 to 2008

Abstract:  This study investigates the legal status of modified shotguns in Turkey by examining the cases submitted to the Aydın Regional Criminal Laboratory between January 2006 and August 2008. A total of 351 shotguns used in crimes were examined. These guns were evaluated in respect of their type, size, caliber, fitness for use, and legal classification. Eleven percent of these shotguns had been modified and it was found that 55% of the modified shotguns were classified according to law 6136 and qualified as a pistol and 45% were classified according to law 2521 and qualified as nonstandard shotguns. Within the Turkish criminal justice system, a nonstandard shotgun attracts a less stringent sentence than a pistol. It would therefore appear that this sentencing structure is considered when modifying shotguns in Turkey. This is clearly a loop-hole in the legislation that could perhaps be investigated and closed.     

我国证券市场结构突变与波动性实证研究

重大事件的发生会使证券市场波动率发生结构突变.通过修正ICSS算法检验,可以发现我国证券市场波动存在明显的结构变化.将结构突变因素加入波动率模型进行比较后,可以发现含结构突变的波动率模型能更准确地刻画波动率特征.再分别按照结构突变发生的时间点分割样本区间与构造虚拟变量两种方法,对含结构突变的波动率模型进行比较研究的结果表明:构造虚拟变量方法对我国证券市场的波动率建模能取得较好的统计效果.     

“布白”及其他——再论我国现行行政公文文面的形式美

"布白"是构成我国现行行政公文文面形式美的又一重要因素.由于注重了公文文面的布白,我国现行行政公文构建出了"虚实相间"的公文文面格式.我国现行行政公文文面布白主要有三种形式.这三种形式互相结合,在公文文面上形成了四个主要的布白区域,体现出我国现行行政公文文面的空间美来.色彩对比也是构建我国现行行政公文文面形式美的一个值得注意的因素.我国现行行政公文文面通过朴素的白、黑、红三色,较好地表现出公文文面的色彩美.     

谈手枪射击课中“时间量”教学法

为提高公安院校学生手枪射击的技能,以适应公安实践的需要,训练中可将体育教学中的"时间量"训练法运用进去,着重进行掏枪中的时间量训练、上膛与瞄准中的时间量训练、瞄准与击发中的时间量训练和"二快一中"的时间量训练.     

Evaluation of Total Nitrite Pattern Visualization as an Improved Method for Gunshot Residue Detection and its Application to Casework Samples

Visualization of nitrite residues is essential in gunshot distance determination. Current protocols for the detection of nitrites include, among other tests, the Modified Griess Test (MGT). This method is limited as nitrite residues are unstable in the environment and limited to partially burned gunpowder. Previous research demonstrated the ability of alkaline hydrolysis to convert nitrates to nitrites, allowing visualization of unburned gunpowder particles using the MGT. This is referred to as Total Nitrite Pattern Visualization (TNV). TNV techniques were modified and a study conducted to streamline the procedure outlined in the literature to maximize the efficacy of the TNV in casework, while reducing the required time from 1 h to 5 min, and enhancing effectiveness on blood‐soiled samples. The TNV method was found to provide significant improvement in the ability to detect significant nitrite residues, without sacrificing efficiency, that would allow for the determination of the muzzle‐to‐target distance.