关于转轮手枪规范操作的思考

文章结合笔者赴港进行第六期武力使用教官课程（UFIC）的培训经验,以转轮手枪装、退弹动作,以及单、双动作发射的操作方法为例,建议公安部借鉴香港警方及国外警察的训练经验,结合2005式9毫米转轮手枪自身特点和国内执法环境,规范相关操作方法,从而制定出安全、有效的训练模式。     

A Hydrologic Retention System and Water Quality Monitoring Program for a Human Decomposition Research Facility: Concept and Design

Forensic taphonomy is an essential research field; however, the decomposition of human cadavers at forensic science facilities may lead to nutrient loading and the introduction of unique biological compounds to adjacent areas. The infrastructure of a water retention system may provide a mechanism for the biogeochemical processing and retention of nutrients and compounds, ensuring the control of runoff from forensic facilities. This work provides a proof of concept for a hydrologic retention system and an autonomous water quality monitoring program designed to mitigate runoff from The Southeast Texas Applied Forensic Science (STAFS) Facility. Water samples collected along a sample transect were analyzed for total phosphorous, total nitrogen, , , NH₄, F^?, and Cl^?. Preliminary water quality analyses confirm the overall effectiveness of the water retention system. These results are discussed with relation to how this infrastructure can be expanded upon to monitor additional, more novel, byproducts of forensic science research facilities.     

应用于沥青路面的化学抑尘剂效果试验

对一种应用于沥青路面的化学抑尘剂,进行了现场抑制排放浓度和排放量的效果试验。抑尘剂应用于郊区沥青道路,对喷洒抑尘剂和未喷洒抑尘剂路段两侧颗粒物浓度进行测量,结果显示抑制PM10排放浓度效率为22%;抑尘剂应用于城区辅路,通过对抑尘剂喷洒前后路面粉土负荷的测量分析,根据AP-42排放因子公式模型计算颗粒物排放量,10%和3%两种浓度抑尘剂,28 d内抑制PM10排放量平均效率分别为49%和30%,35%浓度抑尘剂由于受工地干扰,效率为18%;抑尘剂应用于工地出口破损道路,对抑尘剂喷洒前后路边颗粒物浓度测量分析,结果显示2 d内平均抑制PM10排放浓度效率为82%,与洒水4 h内的效率接近但持续时间比洒水长。     

Magazine Influence on Cartridge Case Ejection Patterns with Glock Pistols

In this study, the cartridge case ejection patterns of six different Glock model pistols (one specimen per model) were compared under three conditions: firing with a loaded magazine, an empty magazine, and without magazine. The distances, covered by the ejected cartridge cases given these three conditions, were compared for each of the six models. A significant difference was found between the groups of data for each of the tested specimens. This indicates that it is important that, to reconstruct a shooting scene incident based on the ejection patterns of a pistol, test shots are fired with the same pistol type and under the correct magazine condition.     

北京交通扬尘污染控制研究

颗粒物是北京市大气污染的首要污染物,其中交通扬尘对颗粒物浓度的贡献较大.减少各种尘土进入道路和进行道路清扫是控制交通扬尘污染的主要措施.通过对国内国外两种清扫车排放口的排放浓度和吸尘效率进行测试研究表明,采用先进的清扫设备可以有效地控制交通扬尘.