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主管:中华人民共和国司法部
主办:司法鉴定科学研究院
ISSN 1671-2072  CN 31-1863/N

Archive

    2023 Issue 5 (Total No. 130)
    Published: 15 September 2023
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    Forensic System
    Forensic Review
    Forensic Science
    Forensic Forum
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    Forensic System
    The Multidimensional Perspective and Nature Definition of Forensic Appraisal Legislation
    GUO Hua
    2023(5): 1-9.  DOI: 10.3969/j.issn.1671-2072.2023.05.001
    Abstract ( )   PDF (1562KB) ( )  
    Forensic appraisal involves not only litigation activities, but also administrative law enforcement, supervision, arbitration, mediation and other activities in many fields. The latter activities need forensic appraisal to provide forensic evidence, and also make connection machanism with appraisal law. The forensic legislation should be positioned from the perspective of national development strategy, embody the function of public legal service, and satisfy the real demands of various dispute settlement activities from multidimensional perspective. It is expected to emphasize the nature of comprehensive law embedding organic, administrative and coordinating law, and to guarantee that the legislative arrangement can provide scientific evidence on the basis of due process. Therefore, it can play the role of finding the true scientific evidence and develop the assistant function of experts in maintaining the right of parties.
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    Outline of Several Issues on Forensic Appraisal Management under the Public Welfare Attribute
    ZHU Jinfeng
    2023(5): 10-21.  DOI: 10.3969/j.issn.1671-2072.2023.05.002
    Abstract ( )   PDF (1666KB) ( )  
    Public welfare is an essential requirement of forensic appraisal, and is also determined by the legal and scientific nature of forensic appraisal. The management of forensic appraisal will have a decisive impact on the realization of the public welfare nature of forensic appraisal. Thinking about the management of forensic appraisal from the perspective of public welfare  is not only the requirement for positioning forensic appraisal policies, but also the requirement of the litigation system and judicial practice. From the perspective of public welfare, when considering the management of forensic appraisal, it is necessary to achieve a shift in management concepts, management system design, and management system reform goals at first, and then consider the specific content of forensic appraisal management mode, management subjects, fee management, appraisal institution management, and other aspects. To ensure the nature of public welfare of forensic appraisal through the administrative management, various supporting measures should also be taken. Among them, we should first consider the system guarantee of forensic appraisal management, as well as incentive mechanisms represented by forensic appraisal practice insurance and punishment mechanisms represented by strengthening administrative penalty measures.
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    Forensic Review
    Frontier in Hair Analysis:Research Advances in Hair Microsampling Technology
    SHEN Min, YAN Hui, XU Duoqi, JI Jiaojiao
    2023(5): 22-30.  DOI: 10.3969/j.issn.1671-2072.2023.05.003
    Abstract ( )   PDF (3690KB) ( )  
    Hair analysis plays an important role in forensic practice. However, errors still exist in the estimation of drug ingestion time by traditional segmental hair analysis. Therefore, micro-segmental hair analysis based on a single hair or millimeter or sub-millimeter segments of a single hair was proposed, developed and studied, and the distribution and concentration peak of exogenous substances in a single hair can be accurately characterized by the unique method, which has information reflection characteristics. This paper summarizes international research reports on micro-segmental hair analysis through subject search, including the methodology of micro-segmental hair analysis, the evaluation of poison/drug ingestion time, the distribution of poison in hair, the enter mechanism of drugs in hair and the toxicokinetics in hair roots. The limitations and future application of micro-segmental hair analysis were also discussed.
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    Research Frontiers and Prospects of Artificial Intelligence Technology in Forensic Bone Age and Dental Age Assessment
    ZHOU Huiming, LI Danyang, WAN Lei, LI Chengtao, WANG Maowen, WANG Yahui
    2023(5): 31-38.  DOI: 10.3969/j.issn.1671-2072.2023.05.004
    Abstract ( )   PDF (1105KB) ( )  
    Artificial Intelligence technology has showed new features such as deep learning, cross-border integration, man-machine collaboration and swarm intelligence openness. The achievements in artificial intelligence-assisted research benefit all branches of forensic medicine, providing new ideas and methods to solve the problems of traditional forensic medicine. With the development of the new generation of artificial intelligence-related disciplines, technological innovation, software and hardware upgrading and other overall progress, chain breakthroughs are being triggered, promoting the deep integration of forensic living age research and artificial intelligence technology. The medical images of human bones and teeth show the changes of different degrees of black, white and gray. The advantages of artificial intelligence technology in image recognition are being applied in the researches of living age assessment by forensic scientists. Through image pre-processing, bone block segmentation, feature extraction and information processing, we can realize the deep mining of bone image information, automatic recognition and accurate assessment of individual age, which provides a new opportunity to achieve highly precisive intelligent evaluation of bone age and tooth age. It is one of the reliable ways to construct the artificial intelligent bone age evaluation system. Therefore, this paper focuses on the research frontiers and prospects of artificial intelligence technologies such as support vector machine and deep learning in forensic age and dental age assessment.
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    Research Progress of Detecting Illicit Drugs in Sewage Sludge
    DI Yumin, JI Yaqin, YANG Yi, LIN Zi, LIU Peipei
    2023(5): 39-45.  DOI: 10.3969/j.issn.1671-2072.2023.05.005
    Abstract ( )   PDF (892KB) ( )  
    Illicit drugs and metabolites are usually accumulated in sewage and sludge and enter the natural environment through excretion, dumping, etc., A large number of organic compounds can be accumulated in the sediment of sewage conduit and treatment plant. Hydrophobic drugs and metabolites were difficult to be detected in the waste water matrix, but can be detected in sewage sludge. Therefore, it’s necessary to research the detection of drugs in sludge, not only for the in-time and accurate monitoring of drug abused situation in some regions, but also assisting in evaluating the harm to the environment caused by the residues of drugs and their metabolites in the solid matrix. Sludge sampling is usually carried out by hand-held grabs and stored at -20 ℃ after freeze-drying for sample analysis. Extraction of these substances from solid matrices has been achieved with pressurized liquid extraction (PLE), solid-liquid extraction (SLE) or solid-phase extraction (SPE), etc. The analyte determination are commonly done with liquid chromatography-tandem mass spectrometry (LC-MS/MS). This paper reviewed the methods of sampling, sample pre-treatment and instrumental analysis for the detection of illicit drugs and metabolites in sewage sludge, providing reference for the detection of illicit drugs and metabolites in sludge, as well as the risk assessment of ecological environment in the future.
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    Forensic Science
    Application of Cloud-Calculating GPM Mixture Deconvolution System in DNA Mixture Analysis
    CHEN Anqi,
    2023(5): 46-51.  DOI: 10.3969/j.issn.1671-2072.2023.05.006
    Abstract ( )   PDF (4936KB) ( )  
    Objective To evaluate the deconvolution ability of the cloud-calculating GPM mixture deconvolution system. Methods Thirteen artificially made mixture samples were genotyped and the contributors’ profiles from the mixtures were analyzed using the GPM mixture deconvolution system. Results All the mixed DNA profiles were deconvoluted successfully, and the genotyping accuracy of the major contributors (93.04 %) was higher than that of the minor contributors (50.48 %). There were 12 loci including Amel, D7S820 and TH01 possessed higher accuracy, indicating these loci might be the first choice for the criminal investigation. The accuracy of the loci whose weight value >90 % was as high as 99.63 %, and the average weight value of the correctly typed loci was 82.36 %±24.68 %. The results suggested that although the weight value was an effective cutoff, it was not the necessary and sufficient condition for the genotyping accuracy. Conclusion The cloud-calculating GPM mixture deconvolution system played a guide-role in mixture deconvolution, but the genotyping accuracy need to be improved further.
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    Forensic Analysis of 39 Cases That Exaggerated or Camouflage Vision Decrease after Eye Injury
    ZHOU Zhilu, CHEN Jiemin, LIU Ruijue, YU Xiaoying, WANG Meng, WANG Jie, HAO Hongxia,
    2023(5): 52-56.  DOI: 10.3969/j.issn.1671-2072.2023.05.007
    Abstract ( )   PDF (779KB) ( )  
    Objective To investigate the characteristics of cases which exaggerated or disguised vision decrease during forensic medical appraisal after eye injury, summarizing the matters for attention in forensic medical appraisal practice. Methods Cases being identified as exaggerated or disguised vision decrease, from 2019 to 2022, were collected. The nature of the cases, general condition, injury objects, injury types, visual chart vision and examination results were analyzed statistically. Results 11 cases out of 39 cases had disguised binocular vision disorder. The type of injury was mostly eye adnexal injury, and the mode of injury was mostly boxing injury. The range of impaired visual acuity in disguise was between 0.05 and 0.4. Conclusion In the practice of eye injury assessment, the expert opinions can not only rely on the diagnosis of medical records and the self-reported visual acuity of the patients. It is necessary to take the degree of eye injury into consideration, and analyze objectively the correlation between visual impairment and trauma.
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    Retrospective Analysis: The Medical Dispute Appraisal of 78 Cases of Sudden Cardiac Death
    ZHANG Ping, XU Hui, GAO Jue, JIANG Shihao, ZHANG Zhixiang, SHI Xiaoling
    2023(5): 57-63.  DOI: 10.3969/j.issn.1671-2072.2023.05.008
    Abstract ( )   PDF (1050KB) ( )  
    Objective To explore the characteristics, causes and appraisal approach of sudden cardiac death induced medial disputes. Methods 78 cases of sudden cardiac death were analyzed retrospectively. Results The incidence of sudden cardiac death in male was higher than that in female, and mainly happened in the rang of 40-59 years old. 37 cases had acute coronary syndrome, 24 cases had aortic dissection, 10 cases had myocarditis, 1 case had heart conduction system disease, 2 cases had valvular disease, 2 cases had congenital heart defect, and 2 had other situations. The departments primarily responsible for medical errors were counted as follows: cardiovascular department (48 cases), emergency department (15 cases), general surgery department (7 cases), orthopedics department (3 cases), respiratory department (3 cases) and endocrinology department (2 cases). In the cases mentioned above, 6 cases had no fault in diagnosis and treatment, 15 cases had faults in diagnosis and treatment, but had no cause-and-effect relationship with the patient’s death. 32 cases had weak cause-and-effect relationship between the faults in diagnosis and treatment and the patient's death. In 18 cases, the faults in diagnosis and treatment were of secondary responsibility for the death of patients. In 3 cases, the faults in diagnosis and treatment were of primary responsibility for the death of patients. No case was completely responsible for the death of patients. Conclusion The occurrence of medical disputes about sudden cardiac death is affected by many factors. Consequently, the high risk of disease, the degree of diagnosis and treatment fault, and the compliance of patients should be considered in the forensic appraisal of medical malpractice. Sudden cardiac death is characterized by acute onset, rapid change of condition, atypical clinical manifestations and low rescue success rate, which are the main reasons for the low proportion of the causal force between medical errors and patients’ death.
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    Research on the Restoration of Cutting Trace of Iron Wire under Corrosive Condition and Its Impact on the Forensic Impression Identification
    LI Dawu, ZANG Taiqi, ZHOU Hao, ZHANG Jianghua
    2023(5): 64-71.  DOI: 10.3969/j.issn.1671-2072.2023.05.009
    Abstract ( )   PDF (26490KB) ( )  
    Objective The restoration and enhancement of tool mark features helps to improve the utilization of tool marks. This research compared and analyzed the features of cutting trace of iron wire before and after corrosion, to study its influence on the forensic identification of cutting trace. Methods The cutting trace of iron wire was corroded by neutral salt spray test. The influence of the physical and chemical treatment methods on the corrosion line marks on the surface of the  iron wire was discussed. The processing parameters for removing the superficial corrosion products, which block the trace of surface lines, were optimized. Results Using physical or chemical methods to remove the corrosion products can improve the surface observation effect and facilitating the identification of tool marks. The chemical method for restoring the trace on the surface of iron wire used hydrochloric acid-water solution(VHCl VH2O =1∶2) to wash the surface for 4 min. The physical method used ultrasonic bath, washing the iron wires with 75 % ethanol at 40 kHz for more than 10 min. The temperature was set at 30 ℃.The features of line trace which width was no more than 0.01 mm were not stable and cannot be completely restored by physical or chemical methods. On the other hand, the features of line trace which width was larger than 0.03 mm were 100 % restored. Conclusion This method can provide technical support and reference for the forensic identification of tool marks.
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    Forensic Forum
    Review of the Practice of Standardization in American Forensic Science
    CHEN Bangda
    2023(5): 72-80.  DOI: 10.3969/j.issn.1671-2072.2023.05.010
    Abstract ( )   PDF (1372KB) ( )  
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    Online Appraisal: Normative Construction and Institutional Deployment—Centered on Article 28 of the Online Operating Rules of the People’s Court
    LI Kun
    2023(5): 81-90.  DOI: 10.3969/j.issn.1671-2072.2023.05.011
    Abstract ( )   PDF (1504KB) ( )  
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    Several Issues Concerning the Entrustment of Forensic Appraisal by Prosecutors in Public Interest Litigations
    CUI Hengchun, LI Qin
    2023(5): 91-94.  DOI: 10.3969/j.issn.1671-2072.2023.05.012
    Abstract ( )   PDF (540KB) ( )  
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    Discussion on the Risk Fund System for Forensic Appraisal Practice
    ZHOU Xue, LIANG Qian, YU Shanshan, et al.
    2023(5): 95-99.  DOI: 10.3969/j.issn.1671-2072.2023.05.013
    Abstract ( )   PDF (737KB) ( )  
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    Discussion on the Role of Handwriting Experts Testifying in Court as Expert Assistants
    TAO Yijun, DU Zhichun
    2023(5): 100-104.  DOI: 10.3969/j.issn.1671-2072.2023.05.014
    Abstract ( )   PDF (798KB) ( )  
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    Discussion on Song Ci’s Thought of Corpse Examination from Xi Yuan Ji Lu
    DUAN Lemin
    2023(5): 105-110.  DOI: 10.3969/j.issn.1671-2072.2023.05.015
    Abstract ( )   PDF (1229KB) ( )  
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