01 December 2008, Volume 0 Issue 6

    

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Technical Exchange
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  The study of forensic pathology of cerebrovascular malformation causing sudden death

  XU Tongli, CUI Lijuan, SHEN Danna,et al

  Forensic Science And Technology. 2008, 0(6): 3.

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  ObjectiveTo study forensic pathology characteristics of cerebrovascular malformation causing sudden death and examination methods. MethodsWe reviewed records of 36 patients with cerebrovascular malformations causing sudden unexpected death discharged from West China Forensic Expertise Center in Sichuan from 1997 to 2006ResultsThe dominating group (25 cases, 6944%) is male aged from 10 to 49 years. 18 cases (50%) fell ill at inducing causes, and 18 cases (50%) died in one hour. Arteriovenous malformation (33 cases, 9167%) was the most important in cerebrovascular malformations. The most locations（24 cases, 6667%) were the base of the brain, pons and cerebellum. Hemorrhage was the direct cause of death, and subarachnoid hemorrhage was the most common type of brain hemorrhage (22 cases, 6111%). The location and morphous of cerebrovascular malformations are varied, and routine examinations can't meet the expertise. ConclusionIdentification of cerebrovascular malformation causing sudden death is very difficult. Examiner must know pathology characteristics of cerebrovascular malformation well and many examination methods are needed.
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  Research on Spectral imaging operation technique

  HUANG Wei, WANG Guiqiang, XU Xiaojing, et al

  Forensic Science And Technology. 2008, 0(6): 7.

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  ObjectiveResearch on making spectral imaging applying much standardization. MethodsThe images obtained from the spectral imaging analysis were compared to different datum marks. ResultsVariety results were got with different datum marks. ConclusionFor different inspection objectives choosing different datum marks has very strong disciplinarian.
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  The analysis of common abuse drugs by UPLC simultaneously

  ZHANG Xiaoting, LIU Juan, DU Huiling,et al.

  Forensic Science And Technology. 2008, 0(6): 11.

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  ObjectiveTo develop a method for analysis of morphine, methamphetamine,amphetamine, ephedrine, MDMA,MDA,ketamine in whole blood and urine simultaneously; MethodBlood and urine samples were analyzed by ultra performance liquid chromatography with photodiode array detector (UPLCPAD); ResultsThe drugs were determined successfully；ConclusionUPLC can be routinely used for determination of morphine,methamphetamine,amphetamine,ephedrine, MDMA ,MDA ,ketamine in whole blood and urine.
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  GC/MS analysis of three kinds of anion poison derivatized at the liquidsolid interface

  WEI Wanli

  Forensic Science And Technology. 2008, 0(6): 13.

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  Objective To establish a gas chromatography  mass spectrometry method for the identification of three kinds of anion poison derivatized at the liquidsolid interface . MethodsCyanogen ion , nitrite ion and monofluorocetate anion （CN-、NO-2、FCH2COO-）in the examined material are adsorpted by the anion exchange resin firstly , then the anions are derivatized by PFBBr at the liquidsolid interface of the anion exchange resin , the derivatives are detected by GCMS finally . ResultsThe anions are extracted and concentrated successfully before derivatizing , and the derivatization is driven well under this condition . The derivatives are stable and suitable for analysis using a GCMS . ConclusionThe method can be used effectively for the identification of cyanogen ion , nitrite ion and monofluorocetate anion .
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  The method of solid phase extraction and analysis for barbitals in biological samples

  GUO Hairong, PEI Maoqing

  Forensic Science And Technology. 2008, 0(6): 16.

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  ObjectiveTo establish a qualitative and quantitative method for analysis of the barbitals in biological samples. MethodsBlood samples were extracted by SPE and analyzed by GC/MS. ResultThe linear range of GC/NPD and the detection limit of GC/MS are obtained. ConclusionThe described method was proved to be sensitive and accurate; it can be used in determination of the barbitals in biological samples.
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  Plantar pressure distribution between left and right feet of young people in walking

  TANG Chengqing

  Forensic Science And Technology. 2008, 0(6): 19.

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  ObjectiveTo provide scientific basis for footprint analysis and to set foundation to quantitative footprint examination. Methods30 young males were chosen to walk normally on the Footscan plate and their plantar pressure data were collected. The mean pressure under 6 plantar regions of both left and right feet was calculated and Pearson correlation analysis was completed with SPSS version 120ResultsPearson correlation was different for plantar regions of both feet. ConclusionPressures in heel region of both feet were highly correlated and footprint characteristics in this area were important for footprint analysis, and features in other areas were also helpful.
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  Development of latent fingerprints by RTX

  LUO Yaping, XIE Wei，YANG Zhenqian

  Forensic Science And Technology. 2008, 0(6): 21.

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  In this paper, we present RTX method for developing fingerprints deposited on papers, glass and wood.
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  Footprinting by the reaction of potassium ferrocyanide and trivalent iron salt solution

  HU Changan,WANG Mingzhi,MA Yongwei

  Forensic Science And Technology. 2008, 0(6): 23.

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  ObjectiveTo explore new methods of taking footprints with nonink solution. MethodsGeting the trivalent iron salt solution of a certain concentration with feet, plant the feet on the potassium ferrocyanide solutiontreated papers. ResultsBlackblue footprints appear on the treated papers. ConclusionThe method is scientific, safe and simple.
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  The design of read only port form IDE to USB with MCU STC89C54

  JIA Ziyi, LI Ronghui, WEI Wei

  Forensic Science And Technology. 2008, 0(6): 25.

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  Objectiveto prevent the original electronic date in a IDE port hard disk from changing when check it. MethodsLink the IDE port hard disk and the computer with Mcu chip and peripheral circuit,write infixed programme to hold up writingorder,thereby protect the content in hard disk. ResultsLink a IDE hard disk to the computer through this port ,when write file in it, a dialog box will pop to tell you this order can not be done. ConclusionFor this case,it can be done by a IDEUSB port designed by MCU STC89C54 to protect the content of a IDE port.
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  Features and mechanism of impact and run over　injuries by train

  KUANG　Dewang

  Forensic Science And Technology. 2008, 0(6): 28.

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  ObjectiveTo summarize the injurious features so as to investigate the typical injurious features and　mechanism of impact injuries by train and run over injuries by train. Methods103 cases of　impact injuries by train and 84 cases of run over injuries by train were analysed. ResultsDifferent mode of injuries or casualties　in a different state may cause differences in injurious features and mechanism. ConclusionTypical injurious features may be useful in diagnosis of mode of injuries and state of casualties.
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  The progress on estimation of age from dental iconography

  TUO Lin, SUN Hui, TIAN Xuemei,et al.

  Forensic Science And Technology. 2008, 0(6): 31.

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  This article presents a review of methods for estimating age of infant, adolescent and adult from dental iconography.