9种介质上滴落状血迹的模拟实验研究和应用

目的观察不同高度和速度滴落在9种介质上的血迹的形态、大小及与高度,速度之间的关系。方法采用抗凝人血,在静态和动态条件下,进行滴落状血迹的模拟实验,观察血迹的形态,测量其直径,用spss12.0统计软件进行分析。结果在静态条件下,滴落血迹,多呈圆形,其周围有毛刺状突起;7种介质上滴落血迹的大小(直径)与滴落高度之间有较好的线性关系,可得出回归方程。在慢走、急走、跑、快跑动态条件下,滴落血迹为圆形或椭圆形,沿运动方向的一侧出现突起;高度、速度分别对血迹形态有影响,在水泥路面上两者有交互作用。结论滴落状血迹形态和大小,可用于对出血部位的高度、运动速度和方向的推断。

An experimental study of drip bloodstain on nine kinds object

Object To observe the shape and size of drip bloodstain dropped in different heights,and with different speeds on nine kinds object.Method Anticoagulation blood was dropped in static or movable conditions.The diameter of bloodstain was measured.The data were analyzed by spss12.0 statistic software.Results In static conditions,the drip bloodstain was round with stings on edge.There were linear relationship between the diameter and height,which could deduce linear formula on seven kinds object.In walk,hurry walk,run and dash movable conditions,the drip bloodstain appeared as round or ellipse with stings on one side along direction of motion.Height or speed influenced the shape and size of drip bloodstain.Height and speed interacted on the shape and size of drip bloodstain on cement ground.Conclusion The analysis of shape and size of drip bloodstain were useful to estimate the heights of bleeding,speeds and directions of motion.