Japanese Journal of Forensic Science and Technology最新文献_第10页

Screening of paraquat and diquat in human body fluid by matrix assisted laser desorption/ionization time-of-flight mass spectrometry after solid-phase dispersive extraction 固相分散萃取后基质辅助激光解吸/电离飞行时间质谱法筛选人体体液中的百草枯和迪奎特

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/JAFST.743

Yusuke Suzuki, Tsuyoshi Kaneko, Koichi Saito

引用次数: 0

Discrimination of inkjet printers by measurement of spur marks using a measuring microscope 用测量显微镜测量喷墨打印机刺痕的鉴别

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/JAFST.747

Masanao Shionaga, Mototsugu Suzuki, Hitomi Kudo

引用次数: 0

Forensic Discrimination of Oils by Matrix Assisted Laser Desorption Ionization Time Of Flight Mass Spectrometry (MALDI-TOF-MS) 基质辅助激光解吸电离飞行时间质谱法鉴定油脂

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/jafst.754

Tsuyoshi Kaneko, Yusuke Suzuki

引用次数: 0

Trend of speed analysis in accident reconstruction 事故重构中的速度分析趋势

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/JAFST.R020

Kenji Koide, T. Kodama

{"title":"Trend of speed analysis in accident reconstruction","authors":"Kenji Koide, T. Kodama","doi":"10.3408/JAFST.R020","DOIUrl":"https://doi.org/10.3408/JAFST.R020","url":null,"abstract":"Motorization produced tra‹c accidents and its con‰icts to be brought into the court of law. The ˆeld of accident reconstruction was born to cope with these litigations. Essentially, tra‹c accident is a crime of negligence. Punishment and insurance payment depend upon the assessment of the case. Vehicle speed plays an important role in the ratio of fault and plays an important role as a standard of fault authorization. An analysis method has been developed ever since. Now in Japan, tra‹c accident is punished with a special law independent from the existing penal code. Speed analysis has become a more important factor under this law. Therefore speed analysis has a long historical path and still plays an important ˆeld within forensic science. Fundamental method of speed analysis has been long based on the application of basic physics principles. Recent evolution of electrical devices brought another approach to the speed analysis. Images of CCTV, drive recorders, and vehicle mounted electrical data are oŠering a good chance to analyze vehicle speed. We would like to review the speed analysis of the traditional methods and overview the trend of recent methods of the new era.","PeriodicalId":14709,"journal":{"name":"Japanese Journal of Forensic Science and Technology","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78222548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the commercial kits for the extraction of extracellular DNA in soil 土壤中细胞外DNA提取试剂盒的评价

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/JAFST.748

H. Miyaguchi, Hiroaki Nakahara, R. Sugita

{"title":"Evaluation of the commercial kits for the extraction of extracellular DNA in soil","authors":"H. Miyaguchi, Hiroaki Nakahara, R. Sugita","doi":"10.3408/JAFST.748","DOIUrl":"https://doi.org/10.3408/JAFST.748","url":null,"abstract":"Five commercial DNA extraction kits for microbial DNA in soil were evaluated in terms of the extraction e‹ciencies of artiˆcially-spiked extracellular DNA in soil. Commercially-available puriˆed DNA derived from the sperm of Clupea harengus (Atlantic herring) was homogeneously premixed in blank soil samples and extracted using the kits. The spiked DNA in each of the extracts was quantitated by real-time PCR to evaluate extraction e‹ciency using a speciˆc primer set for the mitochondrial 16S rRNA gene of Clupea harengus. Only the Extrap Soil DNA Kit could extract the DNA from all types of soils spiked at 10 mg/g soil (vegetable garden soil 0.85, courtyard soil 0.30 and virgin andosol 0.027), whereas other kits (Nucleospin Soil, Power Soil DNA Isolation Kit, ISOIL and ISOIL for Beads Beating) could not extract the DNA larger than the quantitation limit (0.020) from the courtyard soil and the virgin andosol which exhibited high phosphate absorption coe‹cient. Skim milk concentration and bead-beating time using the Extrap Soil DNA Kit were optimized for 20 mg/g soil and 30 s, respectively. Signiˆcant PCR inhibition was not observed under the optimized condition.","PeriodicalId":14709,"journal":{"name":"Japanese Journal of Forensic Science and Technology","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78087949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Evaluation of gait recognition using dynamics of feature points and local shape features under clothing variation conditions 服装变化条件下基于特征点和局部形状特征的步态识别评价

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/JAFST.745

Daisuke Imoto, K. Kurosawa, K. Tsuchiya, K. Kuroki, Manato Hirabayashi, N. Akiba, H. Kakuda

{"title":"Evaluation of gait recognition using dynamics of feature points and local shape features under clothing variation conditions","authors":"Daisuke Imoto, K. Kurosawa, K. Tsuchiya, K. Kuroki, Manato Hirabayashi, N. Akiba, H. Kakuda","doi":"10.3408/JAFST.745","DOIUrl":"https://doi.org/10.3408/JAFST.745","url":null,"abstract":" STAGE DOI: 10.3408 / jafst.745 ) Gait recognition is one of recently evolving techniques by which we can recog-nize individuals by one's gait. There are two major approaches; silhouette-based and model-based. In Japan, a method based on GEI ( Gait Energy Image ) , which is one of the silhouette-based approaches, is used for forensic purposes. Sometimes, it is a problem of silhouettes' variabilities in one person due to diŠerent clothing that les-sen recognition reliability under the GEI method. Here, we analyzed and evaluated the average error rates under clothing variation conditions using the method called Dynamic-features method, which we previously proposed. The Dynamic-features method was built inspired by previous studies of model-based gait recognition, which uses time-series of feature points and local shape features around the points automatically extracted from silhouette sequences. Before analysis, we roughly categorize whole data in the OU-ISIR gait database -treadmill dataset B-, which con-tains side-view data, into ˆve clothing categories in order to deal with realistic oŠ-line forensic situation, where we cannot strictly control utilization of dynamic properties of human's gait.","PeriodicalId":14709,"journal":{"name":"Japanese Journal of Forensic Science and Technology","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81571470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A case of personal identification based on the radiographic image of a remnant of a broken endodontic instrument and alveolar bone resorption 基于根管器械残片和牙槽骨吸收的x线图像进行个人识别的案例

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/JAFST.749

H. Izawa, Akira Furukawa, Sayaka Maruyama, H. Tsutsumi, T. Komuro

引用次数: 0

Forensic discrimination of automotive sheet glass manufactured in a same production line by quantitative analysis of iron using an ICP-QMS/QMS with an octapole reaction cell 采用ICP-QMS/QMS与八极体反应池对同一生产线生产的汽车玻璃板材进行铁的定量分析

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/JAFST.752

Yasuhiro Suzuki, Takao Igawa, M. Kasamatsu, D. Kokubu, Atsushi Funatsuki

引用次数: 2

Analyses of a methamphetamine precursor N-tert-butoxycarbonyl-methamphetamine (t-BOCMA) and its behavior in simulated human gastric juice 甲基苯丙胺前体n -叔丁基羰基甲基苯丙胺(t-BOCMA)及其在模拟人胃液中的行为分析

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/jafst.753

Hidenao Kakehashi, H. Kamata, Akari Ishikawa, Ryutaro Asai, Atsushi Nitta, Misato Wada, Shihoko Nakano, Syuntaro Matsuta, K. Sasaki, N. Shima, Tooru Kamata, H. Nishioka, A. Miki, M. Katagi

{"title":"Analyses of a methamphetamine precursor N-tert-butoxycarbonyl-methamphetamine (t-BOCMA) and its behavior in simulated human gastric juice","authors":"Hidenao Kakehashi, H. Kamata, Akari Ishikawa, Ryutaro Asai, Atsushi Nitta, Misato Wada, Shihoko Nakano, Syuntaro Matsuta, K. Sasaki, N. Shima, Tooru Kamata, H. Nishioka, A. Miki, M. Katagi","doi":"10.3408/jafst.753","DOIUrl":"https://doi.org/10.3408/jafst.753","url":null,"abstract":"N-tert-Butoxycarbonyl-methamphetamine (t-BOCMA), a tert-butoxycarbonyl (t-BOC) derivative of methamphetamine (MA), which has recently been reported in several countries, was seized for the ˆrst time in Japan in 2017. It deprotected easily in an acidic condition to result in an illicit MA, and recently became a newly designated drug of the Pharmaceutical and Medical Device Act. For drug enforcement, the information of its properties was, therefore, strongly demanded. In this study, we synthesized the t-BOCMA standard, acquired various analytical data, and demonstrated its conversion to MA in high yield in the relatively moderate acidic condition (5 HCl methanol solution, 50°C). Also, the stability of t-BOCMA in simulated gastric juice (0.08 M HCl, 37°C) was explored by using GC/MS. As the result, 19 of t-BOCMA remained even after 120 min incubation, and the T1/2 was calculated to be 50 min. These suggest that the orally ingested t-BOCMA would be absorbed into blood in some degree without conversion to MA.","PeriodicalId":14709,"journal":{"name":"Japanese Journal of Forensic Science and Technology","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80526295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

尿素を迅速高感度に検出するウレアーゼ–ヘッドスペース法の開発―尿中薬物鑑定における資料妥当性試験に向けて― 快速、高灵敏度地检测尿素的脲醛酶-头空间法的开发-面向尿中药物鉴定的资料效度试验-

Japanese Journal of Forensic Science and Technology Pub Date : 2019-01-01 DOI: 10.3408/JAFST.750

浅井龍太郎, 徹鎌田, 篤志新田, 美暁和田, 秀直掛橋, 中野史保子, 松田駿太朗, 典明志摩, 裕西岡, 昭宏三木, 宗弘片木

引用次数: 0