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Forensic Science International

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https://www.readbyqxmd.com/read/28624672/analysis-of-fire-deaths-in-poland-and-influence-of-smoke-toxicity
#1
Joanna Giebułtowicz, Monika Rużycka, Piotr Wroczyński, David A Purser, Anna A Stec
Dwelling fires have changed over the years because building contents and the materials used in then have changed. They all contribute to an ever-growing diversity of chemical species found in fires, many of them highly toxic. These arise largely from the changing nature of materials in interior finishes and furniture, with an increasing content of synthetic materials containing higher levels of nitrogen, halogen and phosphorus additives. While there is still a belief that carbon monoxide is the major lethal toxic agent in fires, the hydrogen cyanide and acid gases released from these additives are now well-recognised as major contributory causes of incapacitation, morbidity and mortality in domestic fires...
June 9, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28628783/automatic-retrieval-of-shoeprint-images-using-blocked-sparse-representation
#2
Sayyad Alizadeh, Cemal Kose
Shoe marks are regarded as remarkable clues which can be usually detected in crime scenes where forensic experts use them for investigating crimes and identifying the criminals. Hence, developing a robust method for matching shoeprints with one another is of critical significance which can be used for recognizing criminals. In this paper, a promising method is proposed for retrieving shoe marks by means of developing blocking sparse representation technique. In the proposed method, the queried image was divided into two blocks...
June 8, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28629615/a-simple-method-to-compare-firing-pin-marks-using-stereomicroscope-and-microsoft-office-windows-8-tools
#3
R Suresh
Pertinent marks of fired cartridge cases such as firing pin, breech face, extractor, ejector, etc. are used for firearm identification. A non-standard semiautomatic pistol and four .22rim fire cartridges (head stamp KF) is used for known source comparison study. Two test fired cartridge cases are examined under stereomicroscope. The characteristic marks are captured by digital camera and comparative analysis of striation marks is done by using different tools available in the Microsoft word (Windows 8) of a computer system...
June 7, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28624673/a-geographical-analysis-of-trafficking-on-a-popular-darknet-market
#4
Julian Broséus, Damien Rhumorbarbe, Marie Morelato, Ludovic Staehli, Quentin Rossy
Cryptomarkets are online marketplaces, located on the darknet, that facilitate the trading of a variety of illegal goods, mostly drugs. While the literature essentially focus on drugs, various other goods and products related to financial or identity fraud, firearms, counterfeit goods, as well as doping products are also offered on these marketplaces. Through the analysis of relevant data collected on a popular marketplace in 2014-2015, Evolution, this research provides an analysis of the structure of trafficking (types and proportions of products, number of vendors and shipping countries)...
June 4, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28601726/identification-and-quantification-of-synthetic-cannabinoids-in-spice-like-herbal-mixtures-update-of-the-german-situation-in-early-2017
#5
Ludger Ernst, Kai Brandhorst, Uli Papke, Anna Altrogge, Simone Zodel, Nico Langer, Till Beuerle
In February 2017, eleven "Spice-like" products (14 individual packages including replicates) from German language internet shops were analyzed. In total, three different synthetic cannabinoids (SCs) were identified by gas-chromatography-mass spectrometry (GC-MS), namely MDMB-CHMICA and two, so far only partially described compounds, 5F-Cumyl-P7AICA and Cumyl-PeGACLONE. All analyzed products contained only one synthetic cannabinoid as active ingredient. 5F-Cumyl-P7AICA and Cumyl-PeGACLONE were subject to an in-depth characterization by nuclear magnetic resonance spectroscopy (NMR), electron ionization mass spectrometry (EI-MS), electrospray ionization tandem mass spectrometry (ESI-MS/MS), infrared and ultraviolet-visible spectroscopy (IR and UV/Vis)...
May 26, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28592376/post-operative-fatal-blood-aspiration-after-routine-lung-surgery
#6
Stefanie Plenzig, Mauricio Soriano, Hannelore Held, Marcel A Verhoff
A routine question encountered in medicolegal practice is whether the death of a patient in proximity to a surgical procedure is due to medical malpractice. The case of a 62-year-old man who died two weeks after undergoing a VATS sleeve resection of the upper right lung lobe in conjunction with radical lymphadenectomy, a routine surgical procedure, is reported. To address the issue of medical malpractice, a forensic autopsy was ordered by the investigative authority. During the autopsy, the lungs were removed as a whole and fixed in formalin and were later dissected in cooperation with a thoracic surgeon...
May 26, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28622536/peer-review-in-forensic-science
#7
REVIEW
Kaye N Ballantyne, Gary Edmond, Bryan Found
Peer review features prominently in the forensic sciences. Drawing on recent research and studies, this article examines different types of peer review, specifically: editorial peer review; peer review by the scientific community; technical and administrative review; and verification (and replication). The article reviews the different meanings of these quite disparate activities and their utility in relation to enhancing performance and reducing error. It explains how forensic practitioners should approach and use peer review, as well as how it should be described in expert reports and oral testimony...
May 25, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28609661/the-use-of-pesticides-in-belgian-illicit-indoor-cannabis-plantations
#8
Eva Cuypers, Wouter Vanhove, Joachim Gotink, Arne Bonneure, Patrick Van Damme, Jan Tytgat
Cannabis (Cannabis spp.) use and cultivation continue to increase in many (European) countries. The illicit indoor cannabis plantations that supply Belgian and European cannabis markets create problems and concerns about health and safety of intervention staff, dismantling companies, the direct environment of cannabis plantations and, eventually, of cannabis users. Main risks may come from pesticide residues on plants, cultivation infrastructure and materials; left-over plant growth-promoting substances; mycotoxins from fungal pathogens on harvested plants; and/or high levels of cannabinoids in cannabis plant parts for consumption...
May 25, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28587915/acrylfentanyl-another-new-psychoactive-drug-with-fatal-consequences
#9
Davide Guerrieri, Emma Rapp, Markus Roman, Gunilla Thelander, Robert Kronstrand
The European Nordic Countries are the most exposed to opioid-related deaths. Between April and October 2016, a series of forty lethal intoxications occurred in Sweden, in which the presence of the synthetic opioid acrylfentanyl was determined to be the main - or a contributing - cause of death. In the reported cases, the blood concentration of acrylfentanyl - mostly detected in combination with other drugs - ranged from 0.01ng/g to 5ng/g; victims were predominantly males (34 males and 6 females), and their age varied between 18 and 53 years...
May 22, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28577456/dna-decontamination-of-fingerprint-brushes
#10
Bianca Szkuta, Roland A H van Oorschot, Kaye N Ballantyne
Genetic profiling of DNA collected from fingerprints that have been exposed to various enhancement techniques is routine in many forensic laboratories. As a result of direct contact with fingermark residues during treatment, there is concern around the DNA contamination risk of dusting fingermarks with fingerprint brushes. Previous studies have demonstrated the potential for cross-contamination between evidentiary items through various mechanisms, highlighting the risk of using the same fingerprint brush to powder multiple surfaces within and between crime-scenes...
May 22, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28602470/further-evidence-for-ghb-naturally-occurring-in-common-non-alcoholic-beverages
#11
Simon P Elliott, Paolo Fais
GHB has been implicated in many cases of suspected surreptitious administration with the purpose of increasing victim vulnerability to sexual assault. Low amounts of endogenous (or naturally occurring) GHB, which do not reach pharmacologically active levels, have been detected in alcoholic and non-alcoholic beverages. Due to the continued requirement to obtain data on the presence of endogenous GHB in various beverage types, GHB concentrations were measured in a series of non-alcoholic beverages. Tonic water and lemon flavoured tonic water beverages were analysed at 0, 24 and 96h after the bottle opening using gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) on an Agilent 6890/7000C Triple Quadrupole...
May 20, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28579157/compound-mechanism-of-fatal-neck-injury-a-case-report-of-a-tiger-attack-in-a-zoo
#12
Łukasz Szleszkowski, Agata Thannhäuser, Tomasz Jurek
Fatal injuries caused by attacks by large wild cats are extremely rare in forensic medical practice in Europe. There are very few cases described in the forensic medical literature concerning incidents in zoos similar to the tiger attack on a 58-year-old male zoo employee that we present here. While preparing a runway for tigers, the man was attacked by a male Sumatran tiger. Another zoo employee was an eyewitness to the accident; in his testimony he described the sequence of events in detail. The autopsy showed the injuries typical of a tiger attack: traces of claws and canine teeth indicating that the victim of the attack was knocked down from behind, along with deep and extensive fatal wounds to the neck...
May 20, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28554784/dna-recovery-from-latent-fingermarks-treated-with-an-infrared-fluorescent-fingerprint-powder
#13
Abdulrahman Al Oleiwi, Imtiaz Hussain, Allyce McWhorter, Raul Sutton, Roberto S P King
The effect of the infrared fluorescent fingermark visualisation powder, fpNatural 1™, on the recovery of both the quantity and quality of touch DNA from fingerprints deposited on glass slides, was investigated using qPCR and STR typing. Four donors each deposited replicate marks, which were either left untreated (n=5) or treated by dusting with fpNatural 1™ (n=5). Each sample was swabbed using the double swab technique, before being extracted using the EZNA Forensic DNA kit and then DNA quantitated before being subjected to DNA profile analysis...
May 18, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28575731/empirical-test-of-the-performance-of-an-acoustic-phonetic-approach-to-forensic-voice-comparison-under-conditions-similar-to-those-of-a-real-case
#14
Ewald Enzinger, Geoffrey Stewart Morrison
In a 2012 case in New South Wales, Australia, the identity of a speaker on several audio recordings was in question. Forensic voice comparison testimony was presented based on an auditory-acoustic-phonetic-spectrographic analysis. No empirical demonstration of the validity and reliability of the analytical methodology was presented. Unlike the admissibility standards in some other jurisdictions (e.g., US Federal Rule of Evidence 702 and the Daubert criteria, or England & Wales Criminal Practice Directions 19A), Australia's Unified Evidence Acts do not require demonstration of the validity and reliability of analytical methods and their implementation before testimony based upon them is presented in court...
May 17, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28550761/can-cadaverous-pollution-from-environmental-lead-misguide-to-false-positive-results-in-the-histochemical-determination-of-gunshot-residues-study-on-cadaveric-skin-samples
#15
Michele Boracchi, Salvatore Andreola, Federica Collini, Guendalina Gentile, Francesca Maciocco, Francesca Maghin, Riccardo Zoja
Histochemical determination of lead in gunshot residues (GSR) raises the question of possible environmental contamination by heavy metals. Authors assess the specificity of the Sodium Rhodizonate Test in the search of lead derived from environmental pollution. Sodium Rhodizonate Test and 5% HCl Sodium Rhodizonate test were applied to skin samples taken from two groups of victims, whose cause of death was not related to gunshot wounds: group A included 25 corpses found in open spaces after a long time; group B included 16 corpses exhumed after a period of 11 years...
May 13, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28550762/forensic-age-estimation-by-morphometric-analysis-of-the-manubrium-from-3d-mr-images
#16
Naira P Martínez Vera, Johannes Höller, Thomas Widek, Bernhard Neumayer, Thomas Ehammer, Martin Urschler
Forensic age estimation research based on skeletal structures focuses on patterns of growth and development using different bones. In this work, our aim was to study growth-related evolution of the manubrium in living adolescents and young adults using magnetic resonance imaging (MRI), which is an image acquisition modality that does not involve ionizing radiation. In a first step, individual manubrium and subject features were correlated with age, which confirmed a statistically significant change of manubrium volume (Mvol:p<0...
May 12, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28544918/senior-driving-under-the-influence-a-five-year-retrospective-study-of-alcoholized-road-users-aged-70-and-over
#17
Benjamin Kirsch, Christoph G Birngruber, Reinhard Dettmeyer
The demographic development in Germany shows a steady increase to senior citizens. The driving suitability of older road-users is of large social and political concern, because awareness and reactivity can be influenced by age-related diseases and potential medication, particularly in combination with the consumption of alcohol. This study provides an overview of senior road-users under the influence of alcohol. Therefore, 404 cases of drunken-driving by road-users aged 70 and over within the purview of the Institute of Legal Medicine at Justus-Liebig-University, Giessen, from the years 2009-2013 were evaluated in retrospect...
May 10, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28535979/mirtazapine-fatal-poisoning
#18
Claudia Vignali, Angelo Groppi, Francesca Brandolini, Francesco Maria Avato, Anna Talarico, Rosa Maria Gaudio, Luca Morini
Mirtazapine is a noradrenergic and specific serotoninergic antidepressant agent that stimulates norepinephrine and serotonin release while also blocking serotonin receptors (5-HT2 and 5-HT3). Although the drug is used extensively, at present we do not know of any fatal cases due to mirtazapine alone. On the contrary, the published literature describes several fatal poisoning cases related to the intake of mirtazapine together with other drugs. Here we describe a fatal case of mirtazapine self-poisoning, since the other drug detected (lorazepam), was within the therapeutic range...
May 8, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28525773/acetone-facilitated-dna-sampling-from-electrical-tapes-improves-dna-recovery-and-enables-latent-fingerprints-development
#19
Ilan Feine, Moshe Shpitzen, Boris Geller, Eran Salmon, Tsach Peleg, Jonathan Roth, Ron Gafny
Electrical tapes (ETs) are a common component of improvised explosive devices (IEDs) used by terrorists or criminal organizations and represent a valuable forensic resource for DNA and latent fingerprints recovery. However, DNA recovery rates are typically low and usually below the minimal amount required for amplification. In addition, most DNA extraction methods are destructive and do not allow further latent fingerprints development. In the present study a cell culture based touch DNA model was used to demonstrate a two-step acetone-water DNA recovery protocol from ETs...
May 8, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28528194/analysis-of-peg-oligomers-in-black-gel-inks-discrimination-and-ink-dating
#20
Qiran Sun, Yiwen Luo, Ping Xiang, Xu Yang, Min Shen
Carbon-based black gel inks are common samples in forensic practice of questioned document examination in China, but there are few analytical methods for this type of ink. In this study, a liquid chromatography-.high resolution mass spectrometry (LC-HRMS) method was established for the analysis of PEG oligomers in carbon-based black gel ink entries. The coupled instruments achieve both the identification and quantification of PEG oligomers in ink entries with reproducible results. Twenty carbon-based black gel inks, whose Raman spectra appeared identical, were analyzed using the LC-HRMS method...
May 4, 2017: Forensic Science International
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