指纹三级特征中汗孔位置的生物学变化规律研究  

Biological Predisposition of Sweat Pore Location in Third Level Characteristics of Fingerprints

作　　者：王有民[1] 曹吉明 梁娜[1] 柳菁莹 解晓慧[1] 李彦霖 WANG Youmin;CAO Jiming;LIANG Na;LIU Jingying;XIE Xiaohui;LI Yanlin(Department of Information Technology,Shaanxi Police College,Xi’an 710021,China)

机构地区：[1]陕西警官职业学院信息技术系,西安710021

出　　处：《刑事技术》2020年第5期480-485,I0001-I0003,共9页Forensic Science and Technology

基　　金：陕西省教育厅专项科研计划项目(19JK0117);陕西警官职业学院2018年院级重点科研项目(YJKY1801)。

摘　　要：目的研究指纹三级特征中指腹皮肤的新陈代谢对汗孔位置的影响,特别是表皮更替时间内汗孔位置的生物学变化规律。方法选取18~22岁之间男女青年各10人,在表皮更替时间内,通过连续1个月、每两天1次的直接显微拍照、油墨捺印两种方法,在显微镜下观察测量同一个汗孔在乳突纹线上的纵向和横向位置变动情况,据此研究分析其变化规律。结果直接显微拍照观察与油墨捺印观察两种方法,标记汗孔在所处乳突纹线纵、横两个方向均有不同程度的位置变化。20名实验样本中,男性标记汗孔纵向、横向最大位移分别为166.46μm和61.00μm;女性标记汗孔纵向、横向最大位移分别为73.08μm和45.88μm。结论表皮更替时间内,手指指腹乳突纹线上的汗孔在纵、横两个方向均有位置变化,其纵向位置位移值显著大于横向,男性纵、横两个方向的位移值显著大于女性;该变化轨迹范围近似椭圆形,椭圆的长轴与乳突纹线方向一致,短轴与乳突纹线垂直,轴长分别为(119.77±46.69)μm和(53.44±7.56)μm。Objective To explore the influence of metabolizing skin of finger pulp on the location of sweat pore in the third level characteristics of fingerprints,with the focus to place on the biological predisposition within the period of epidermal replacement.Methods Male and female subjects,each 10 of aging from 18 to 22,were selected to observe their epidermal replacement for one continuous month,with one time every two days to note the observations from direct microscopic photography and finger-inked stamping.The same sweat pore was looked into its changing on the longitudinal and transverse directions at the mastoid ridge.Statistical analysis was carried out into the observed data to unveil the biological predisposition about the location changing of sweat pore.Results From either the direct microscopic photography or finger-inked stamping,the location of observed sweat pore was revealed of changing with some extent on both the longitudinal and transverse directions at the mastoid ridge.For the 20 subjects,the male showed maximum longitudinal and transverse displacements of the observed sweat pores were respective 166.46 and 61.00 microns while those of the female were 73.08 and 45.88 microns.Conclusions During the period of epidermal replacement,the sweat pores change their locations on both the longitudinal and transverse directions at the mastoid ridge of finger pulp,with the longitudinal displacement showing significantly larger than that of transverse direction.Male’s displacements,in both the longitudinal and transverse directions,are remarkably larger than the female’s.The location-changing track approximates an ellipse whose long axis(of length about 119.77±46.69 microns)follows along the direction of the mastoid ridge to which the ellipse’s short axis(of length about 53.44±7.56 microns)is vertical.

关 键 词：指纹学 指纹 三级特征 汗孔 位置 规律 

分 类 号：DF794.1[政治法律—诉讼法学]