首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 0 毫秒
1.
目的观察钳剪钢丝铣纹痕迹规律。方法用钢丝钳剪切铁丝,观察形成铣纹痕迹的特点和规律,并对铣纹痕迹数量和倾斜角度与钢丝钳剪切刃口位置的关系予以分析。结果钢丝钳刃口形成的铣纹痕迹数量和倾斜角度随刃口位置变动而发生相应变化。结论通过检测铣纹痕迹的数量和倾斜角度能可靠判断剪切刃口的具体位置,为制作样本选择刃口部位提供依据。  相似文献   

2.
目的探索被增配凸形钥匙上仿形刀痕迹倾斜角度与齿坡角间的关系。方法用铝板制作相同坡长不同齿坡角的钥匙模型,在相同夹持方式下模拟增配过程,观察并总结钥匙上仿形刀痕迹倾斜角度的变化。结果不同齿坡角上仿形刀痕迹倾斜角度不同。结论凸齿钥匙上仿形刀增配痕迹倾斜角度随齿坡角的增大而减小。  相似文献   

3.
The reliability of cemental annulation counts in teeth was examined to determine its value as an age indicator for humans. One hundred extracted human teeth were embedded in polyester casting resin and sectioned using a diamond wafering saw. Thin sections were photomicrographed, projected, and counted in a double blind random method of presentation. The age of the specimen was determined by adding the number of cemental annulations counted by the observers and the eruption age of the specific tooth that was used. The data analyzed by simple regression indicated that determining chronologic age in humans from cemental annulations is not possible.  相似文献   

4.
5.
It has been long recognized that cementum thickness increases with age. Much literature has recently been devoted to utilizing incremental lines in cementum as an aging criterion in animals, but only one study has been done suggesting this technique in humans. Thirty-one teeth of known age were histologically stained and sectioned to observe incremental lines. Direct predictions of age based on these lines underestimated the age of older specimens. However, there was a correlation between number of lines and age, and with a large enough specimen size, a computer-generated formula for age prediction may be possible.  相似文献   

6.
A seminar-conference on general supervision was held in Moscow, July 2-4 of this year, to which were invited the chiefs of general supervision of the procuracies of the republics of a number of territories and regions, and of Moscow, Leningrad, Alma-Ata, and other cities, some vice-procurators of union republics, and procurators of autonomous republics, territories, regions, cities, and districts. Responsible personnel of the CPSU Central Committee and of the Presidium of the USSR Supreme Soviet, as well as legal scholars, also took part in the conference.  相似文献   

7.
The cut ends of aluminium and copper wires made by different pliers have been compared under the scanning electron microscope to correlate the two pieces of a wire and to identify the cutting tool. The mechanism of producing the cut ends has been discussed. Matching of extrusion marks and correspondence of breakages at the edges of the cut ends were observed. Correspondence between the fine striations was observed on the opposite faces. These features are put forward for assigning a cut wire to a source.The ends produced by repeatedly cutting a wire by the same portion of the edge of a pair of pliers have been compared. It was found that the striations and fracture zones were reproduced on the respective surfaces of the consecutive cut ends. To identify the cutting tool in wire theft cases, it is suggested that the trial cut ends can be made by cutting the wire with successive portions of the edge of the suspected tool and compare the surface features with that on the questioned ones.  相似文献   

8.
患者王某某,34岁。于2003年6月16日因停经56天、阴道不规则流血5天到A医院求诊,经检查诊断胚胎停止发育。手术医师将手术中易发生的并发症进行告知.夫妇双方签字后给予行清官术。手术过程顺利,术中宫缩好,检查吸出物为陈旧性血块及绒毛组织。术毕5分钟出现阴道流血约400毫升,色新鲜,  相似文献   

9.
病例报告患者王某某,34岁。于2003年6月16日因停经56天、阴道不规则流血5天到A医院求诊,经检查诊断胚胎停止发育。手术医师将手术中易发生的并发症进行告知,夫妇双方签字后给予行清宫术。手术过程顺利,术中宫缩好,检查吸出物为陈旧性血块及绒毛组织。术毕5分钟出现阴道流血约400毫升,色新鲜,立即给予催产素、静脉输液、手法按摩子宫等处理,阴道流血迅速停止,观察8小时无异常回家,嘱其有异常及时复诊(门诊病历记载)。2003年7月16日,因阴道淋漓不断流血30天来院复查,患者孕3产1,1994年行剖宫产术,1998年行人工流产术。体格检查:T37℃,P76次/…  相似文献   

10.
目的探索面颅角度指标在种族鉴定方面的差异性。方法选取现代人头骨57例,其中中国黄种人头骨30例(女性9例,男性21例),包括吉林1例,河北5例,山东4例,青海4例,安徽4例,江西3例,云南3例,贵州3例,广西3例。欧洲自种人头骨27例,性别不详,取自欧洲Zellemdorf、Vresovice、Kysperka3地。按体质人类学测量方法,通过参考相关文献和对颅骨形态特点的观察,设计面颅左侧眶角、右侧眶角、鼻颌角3个角度指标进行测量。对测量数据进行描述性统计分析和两独立样本之间的t检验。结果3个角度指标在种族差异性方面,眶角的种族差异性具有显著统计学意义(P〈0.01),而鼻颌角之间的种族差异性无统计学意义(P〉0.05)。结论有些角度指标显示出明显的种族差异性,今后需要加强此方面的研究。  相似文献   

11.
The aim of the present study was to evaluate the validity of the modified Kim's scoring system as a practical method of recording occlusal tooth wear and estimating age. For this purpose, 1092 pairs of maxillary and mandibular full-arch casts were randomly selected, scored, and analyzed. The results showed that the modified Kim's scoring system had excellent reliability, and that occlusal tooth wear had a positive correlation with age. Tooth wear scores of all teeth except the two lower central incisors were higher in males than in females. Calculating tables for age estimation were designed by multiple linear regression analysis. Estimated ages were within +/-5 years of actual ages in 63.5% of male subjects, and 64.0% of female subjects. The accuracy of age estimation was increased when the subjects were divided into two age groups and data were re-analyzed. Collectively, it was shown that the modified Kim's scoring system is a reliable and accurate method for age estimation, and that the data from these 1092 individuals can be used as a standard for age estimation of Korean adults.  相似文献   

12.
In a case of murder by a single .22 caliber bullet fragmented in the head, determination of the trajectory was a key issue in identifying which of 2 windows, 1 of which was associated with 2 suspects, was the site of fire. For this purpose, we processed the computed tomography of the victim's head by using a radiation therapy planning system called Plato, which is routinely used in radiation oncology. This tool provided a 3-dimensional reconstruction of the cranio-cerebral lesions and a spatial location of bullet and bone fragments. In this article is described the more intuitive relationship with forensic and ballistic data obtained from the 3-dimensional visualization and the physical and mathematical analysis used to calculate the angle of shot.  相似文献   

13.
Incremental lines of the dental cementum were used for individual age determination in 102 teeth. 66 of them come from different historic periods, 15 teeth were cremated. 36 modern teeth of known age were use as controls. The incremental lines were investigated by use of 100 microns thin cross-sections of the root. Age determination by this method was possible in every tooth, independent of incinaration of various burial conditions. The individual age was determined by adding the mean value of the repeatedly counted incremental lines to the sex-specific eruption age of the tooth in question. Since average deviation from known age is +/- 3.23 years only, counting the incremental lines represent a very advantageous, quantitative method for individual age determination.  相似文献   

14.
15.
目的对汽车多层油漆的横截面进行分层和比对研究。方法运用显微光谱成像技术对收集的12个省市623个汽车漆片样本进行分层,并对截面结构相同或相似的油漆样本进行了区分。结果 623个油漆样本均可以分层,分析出漆层为两层及以上的油漆样本数占总数的87.26%;截面结构相同或相似的油漆样本能够多层同时区分。结论该方法具有科学及实用价值,检验结果可靠,可见光谱成像技术完全可运用拓展到微量物证的检验中。  相似文献   

16.
Infrared spectroscopy has proved to be a very useful method for the routine identification of man-made textile fibres. This paper describes the way in which this technique can fit into casework procedure using two different preparative methods. Spectra can be recorded from samples of 3 μg down to less than 1 μg in weight.  相似文献   

17.
张干荣 《政法学刊》2005,22(6):119-120
随着高等教育的大众化,学校之间竞争激烈,从而引发出一些当前档案法规未明确的问题,如人事档案管理法制不完善, 管理机构混乱,管理方法缺陷等制约人事档案管理的发展,应加强立法,完善档案管理的相关法律和制度。  相似文献   

18.
由于裁判者所具备的知识基本属于常识范畴,而对科学证据的审判断则需要专业技术知识,这正是科学证据能够不断对刑事审判提出挑战的内在原因。两大法系应对挑战的共同途径即是以保障裁判的正当性为基本目标,通过程序的完善来弥合知识的鸿沟。我国刑事诉讼程序中存在的诸多弊端,已严重影响到全国大人常委会《关于司法鉴定管理问题的决定》的贯彻和执行。因此,应以保障刑事审判的正当性为目标,改革相关程序,完善我国的刑事鉴定制度。  相似文献   

19.
我国侵权责任法知情同意条款评析   总被引:6,自引:0,他引:6  
我国《侵权责任法》知情同意条款存在许多可资称道之处,比如,它明确了违反告知义务将导致侵权损害赔偿责任,坚持了“信息告知”与“诊断治疗”两种情境的区分,就医务人员的告知义务和例外做出了原则规定,没有赋予“法律、行政法规、规章以及其他有关诊疗规范的规定”以终局性。但是,它也有许多值得进一步完善之处,它需要进一步凸显知情同意规则的特质、明确信息披露的标准、启用“实质性信息”概念、紧缩“医疗特权”的适用范围。  相似文献   

20.
拳击致牙齿脱落与牙周病关系的法医学研究   总被引:3,自引:1,他引:3  
目的 探讨拳击致牙齿脱落与牙周病关系的法医临床学问题,研究此类损伤的特点,力求对此类损伤的法医学评定进行量化。方法 将65例牙周病牙齿拳击伤致牙齿脱落的案例编为研究组,将65例正常牙齿拳击伤致牙齿脱落的案例编为对照组,运用统计学卡方检验对相关数据进行分析和研究。结果 牙周病组与正常组相比,在年龄、口腔软组织损伤、脱落牙齿种类及个数、牙齿折断及牙槽突骨折存在显著性差异;所受创伤强度与损伤程度的评定存在负相关。结论 牙周病牙齿外伤致牙齿脱落的损伤程度评定存在误区,在对此类损伤程度评定时运用外伤参与度是十分必要的。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号