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https://www.readbyqxmd.com/read/28291039/performance-validity-testing-in-neuropsychology-scientific-basis-and-clinical-application-a-brief-review
#1
Michael R Greher, Thomas R Wodushek
Performance validity testing refers to neuropsychologists' methodology for determining whether neuropsychological test performances completed in the course of an evaluation are valid (ie, the results of true neurocognitive function) or invalid (ie, overly impacted by the patient's effort/engagement in testing). This determination relies upon the use of either standalone tests designed for this sole purpose, or specific scores/indicators embedded within traditional neuropsychological measures that have demonstrated this utility...
March 2017: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/28284444/investigating-tnt-loss-between-sample-collection-and-analysis
#2
Niamh Nic Daeid, Holly A Yu, Matthew S Beardah
Explosives residues are often collected from explosion scenes, and from surfaces suspected of being in contact with explosives, by swabbing with solvent-wetted cotton swabs. It is vital that any explosives traces present on the swabs are successfully extracted and detected when received in a laboratory. However, a 2007 proficiency test initiated by the European Network of Forensic Science Institutes (ENFSI) Expert Working Group on Explosives involving TNT-spiked cotton swabs highlighted that explosives may not always be detected from such samples...
March 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28284440/thinking-forensics-cognitive-science-for-forensic-practitioners
#3
REVIEW
Gary Edmond, Alice Towler, Bethany Growns, Gianni Ribeiro, Bryan Found, David White, Kaye Ballantyne, Rachel A Searston, Matthew B Thompson, Jason M Tangen, Richard I Kemp, Kristy Martire
Human factors and their implications for forensic science have attracted increasing levels of interest across criminal justice communities in recent years. Initial interest centred on cognitive biases, but has since expanded such that knowledge from psychology and cognitive science is slowly infiltrating forensic practices more broadly. This article highlights a series of important findings and insights of relevance to forensic practitioners. These include research on human perception, memory, context information, expertise, decision-making, communication, experience, verification, confidence, and feedback...
March 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28283877/differences-in-local-and-national-database-recordings-of-deaths-from-suicide
#4
Amy E Austin, Corinna van den Heuvel, Roger W Byard
A search was undertaken at Forensic Science South Australia (FSSA) for all cases of suicide registered in South Australia, Australia, over a 10-year period from January 2003 to December 2012. More recent data was not accessioned as not all contemporary cases may have been completed or formally registered. The data were compared to corresponding numbers on two national registers: the National Coronial Information System (NCIS) and the Australian Bureau of Statistics (ABS). A total of 2105 cases of suicide were registered at FSSA, with a death rate of 13...
March 11, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28279856/a-time-period-study-on-the-efficiency-of-luminol-in-the-detection-of-bloodstains-concealed-by-paint-on-different-surfaces
#5
Deepthi Nagesh, Shayani Ghosh
Forensic Science is the application of science to the criminal and civil laws that are enforced by police agencies in a criminal justice system. It is a science which relies on physical evidence; one of the important physical evidences being blood. The purpose of this research was to determine the efficacy of luminol reagent in detecting bloodstains on different surfaces, concealed by multiple layers of paint, over a period of time and also to compare the intensities of chemiluminescence exhibited by them. In this study, dry wall, wooden planks and metal surfaces were identified as commonly encountered surfaces at crime scenes and hence 25 of each surface were simulated and blood was spattered, which were then concealed by progressive layers of paint specific to each surface...
February 11, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28271501/preparation-of-artificial-blood-from-the-extract-of-legume-root-nodules-and-the-creation-of-artificial-latent-fingermarks-in-blood-using-artificial-blood
#6
Sungwook Hong, Chaewon Kim, Soyoung Jeon, Eunhye Lee
Distribution of homogeneous fingermarks in blood is essential for conducting proficiency tests in forensic science. Hence, the artificial blood was prepared using the root nodule extract of Glycine max plants. The reactivity of the artificial blood with widely used human blood detection reagents was tested. Artificial latent fingermarks in blood were printed using an inkjet cartridge case filled with artificial blood solution. The artificial latent fingermarks in blood were developed with amino acid-sensitive reagents and could obtain development as prominent as the image of the master fingermark saved on the computer...
March 7, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28270824/advances-of-community-level-plant-dna-barcoding-in-china
#7
Nancai Pei, Bufeng Chen, W J Kress
DNA barcoding is a commonly used bio-technology in multiple disciplines including biology, environmental science, forensics and inspection, etc. Forest dynamic plots provide a unique opportunity to carry out large-scale, comparative, and multidisciplinary research for plant DNA barcoding. The paper concisely reviewed four previous progresses in China; specifically, species discrimination, community phylogenetic reconstruction, phylogenetic community structure exploration, and biodiversity index evaluation. Further, we demonstrated three major challenges; specifically, building the impetus to generate DNA barcodes using multiple plant DNA markers for all woody species at forest community levels, analyzing massive DNA barcoding sequence data, and promoting theoretical innovation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28270460/a-positive-behavioral-approach-for-aggression-in-forensic-psychiatric-settings
#8
Peter Tolisano, Tracey M Sondik, Charles C Dike
Aggression toward self and others by complex patients admitted to forensic psychiatric settings is a relatively common yet extremely difficult behavior to treat. Traditional interventions in forensic inpatient settings have historically emphasized control and management over treatment. Research over the past several years has demonstrated the value of behavioral and psychosocial treatment interventions to reduce aggression and to increase prosocial skill development in inpatient forensic population. Positive behavioral support (PBS) offers a comprehensive approach that incorporates the science of applied behavioral analysis (ABA) in support of patients with challenging behaviors, including aggression and violence...
March 2017: Journal of the American Academy of Psychiatry and the Law
https://www.readbyqxmd.com/read/28269241/label-free-detection-of-sex-determining-region-y-sry-via-capacitive-biosensor
#9
Shilpa Sivashankar, Christos Sapsanis, Sumeyra Agambayev, Ulrich Buttner, Khaled Nabil Salama
In this work, we present for the first time, the use of a simple fractal capacitive biosensor for the quantification and detection of sex-determining region Y (SRY) genes. This section of genetic code, which is found on the Y chromosome, finds importance for study as it causes fetuses to develop characteristics of male sex-like gonads when a mutation occurs. It is also an important genetic code in men, and disorders involving the SRY gene can cause infertility and sexual malfunction that lead to a variety of gene mutational disorders...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28261793/a-case-of-insect-colonization-before-the-death
#10
Stefano Vanin, Manuela Bonizzoli, Maria Luisa Migliaccio, Laura Tadini Buoninsegni, Valentina Bugelli, Vilma Pinchi, Martina Focardi
Forensic entomology is a branch of forensic science in which insects are used as evidence in legal investigations relating to humans, domestic animals and wildlife. One of the theoretical pillars on which the discipline is based concerns the fact that flies colonize a body after death. However in cases of myiasis, maggots are present before death, with consequences in the correct estimation of the minimum postmortem interval (mPMI). We report here the case of a woman, largely colonized by fly larvae, who has lain alive in her garden for four days prior to being rescued...
March 6, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28261791/drug-recognition-evaluation-and-chemical-confirmation-of-a-25c-nbome-impaired-driver
#11
James W Rajotte, Jean-Paul F P Palmentier, Helena Rachelle Wallage
This case report details an individual arrested for drug-impaired driving after leaving the scene of multiple motor vehicle collisions and evading police. The driver was examined by a drug recognition expert and failed the drug recognition evaluation. The driver admitted to using cocaine, marijuana, an antidepressant medication and "N-bomb," a novel psychoactive substance that possesses hallucinogenic properties. Toxicological analyses at the Centre of Forensic Sciences' Toronto laboratory revealed only the substance 2-[4-chloro-2,5-dimethoxyphenyl]-N-[(2-methoxyphenyl)methyl]ethanamine (25C-NBOMe) in the accused's urine...
March 6, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28259786/new-methodology-for-mechanical-characterization-of-human-superficial-facial-tissue-anisotropic-behaviour-in-vivo
#12
C Then, B Stassen, K Depta, G Silber
Mechanical characterization of human superficial facial tissue has important applications in biomedical science, computer assisted forensics, graphics, and consumer goods development. Specifically, the latter may include facial hair removal devices. Predictive accuracy of numerical models and their ability to elucidate biomechanically relevant questions depends on the acquisition of experimental data and mechanical tissue behavior representation. Anisotropic viscoelastic behavioral characterization of human facial tissue, deformed in vivo with finite strain, however, is sparse...
February 21, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28252618/-the-progressive-models-of-educational-activities-as-a-basis-for-the-training-of-forensic-medical-experts-of-the-new-generation
#13
S A Smirnova, O A Yastrebov
The authors interpret forensic expertology as a synthetic science and propose the models for the training of professionals in the field of forensic medical expertise. They provide a rationale for the realization of such systematic training in the framework of the model of the three-level system based at the educational institutions of higher professional education. Characteristic features of the existing standards of professional training in the sphere of forensic medical expertise are considered with special reference to the organization of education of future forensic medical experts based at the many-level programs adopted in the Russian University of People's Friendship...
2017: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/28252284/mini-mass-spectrometer-integrated-with-a-miniature-ion-funnel
#14
Yanbing Zhai, Xiaohua Zhang, Hualei Xu, Yongchang Zheng, Tao Yuan, Wei Xu
Previously, a continuous atmospheric pressure interfaced miniature mass spectrometer was developed in our lab. The continuous atmospheric pressure interface improves system robustness, stability, and scan speed, but it also results in limited ion transfer efficiency and reduced mass resolution. To solve these problems, a miniature ion funnel was designed and integrated into the miniature mass spectrometer for the first time. Besides ion transfer efficiency, dimension and power consumption of the ion funnel also need to be considered throughout the design process...
March 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28244192/abrasion-collar-around-shrapnel-entry-wound
#15
Pootheril Balan Gujaral, Ajay B
Abrasion collar is usually described as a feature of bullet entry wounds caused by friction and indentation. The present case is that of the peculiar entry wound caused by a piece of flying shrapnel which was ejected from a furnace in a steel plant. The scrap metal which exploded in the plant was sourced from the West Asia region. The entry wound on the chest was circular and had an abrasion collar around it. The projectile was a cylindrical object of obscure origin. The forensic science laboratory put forth the possibility that the projectile was a component of an artillery fuze...
February 28, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28243772/diagnosis-of-aluminum-phosphide-poisoning-using-a-new-analytical-approach-forensic-application-to-a-lethal-intoxication
#16
Hui Yan, Ping Xiang, Sujing Zhang, Baohua Shen, Min Shen
Aluminum phosphide (AlP) is an effective and cheap pesticide that is commonly used worldwide, but it is also a common cause of human poisoning and carries a high mortality rate. AlP reacts with moisture in air, water, and hydrochloric acid in the stomach to produce phosphine (PH3) gas. Two routes of exposure are ingestion of AlP and inhalation of phosphine generated by the action of moisture on AlP. Absorbed phosphine is rapidly metabolized into phosphite and hypophosphite. A method is described for the analysis of the phosphine metabolites in various biological matrices...
February 27, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28230900/x-ray-diffraction-and-rietveld-refinement-in-deferrified-clays-for-forensic-science
#17
Luis V Prandel, Vander de F Melo, André M Brinatti, Sérgio da C Saab, Fábio A S Salvador
Soil vestiges might provide information about a crime scene. The Rietveld method with X-ray diffraction data (RM-XRD) is a nondestructive technique that makes it possible to characterize minerals present in the soils. Soil clays from the metropolitan region of Curitiba (Brazil) were submitted to DCB treatment and analyzed using XRD with CuKα radiation in the step-scan mode (0.02° 2θ/5 s). The GSAS+EXPGUI software was used for RM refinement. The RM-XRD results, together with the principal component analysis (PCA) (52...
February 23, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28230894/diagnosing-crime-and-diagnosing-disease-bias-reduction-strategies-in-the-forensic-and-clinical-sciences
#18
Joseph J Lockhart, Saty Satya-Murti
Cognitive effort is an essential part of both forensic and clinical decision-making. Errors occur in both fields because the cognitive process is complex and prone to bias. We performed a selective review of full-text English language literature on cognitive bias leading to diagnostic and forensic errors. Earlier work (1970-2000) concentrated on classifying and raising bias awareness. Recently (2000-2016), the emphasis has shifted toward strategies for "debiasing." While the forensic sciences have focused on the control of misleading contextual cues, clinical debiasing efforts have relied on checklists and hypothetical scenarios...
February 23, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28227475/label-free-detection-of-sex-determining-region-y-sry-via-capacitive-biosensor
#19
Shilpa Sivashankar, Christos Sapsanis, Sumeyra Agambayev, Ulrich Buttner, Khaled Nabil Salama, Shilpa Sivashankar, Christos Sapsanis, Sumeyra Agambayev, Ulrich Buttner, Khaled Nabil Salama, Khaled Nabil Salama, Shilpa Sivashankar, Sumeyra Agambayev, Christos Sapsanis, Ulrich Buttner
In this work, we present for the first time, the use of a simple fractal capacitive biosensor for the quantification and detection of sex-determining region Y (SRY) genes. This section of genetic code, which is found on the Y chromosome, finds importance for study as it causes fetuses to develop characteristics of male sex-like gonads when a mutation occurs. It is also an important genetic code in men, and disorders involving the SRY gene can cause infertility and sexual malfunction that lead to a variety of gene mutational disorders...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28220762/drug-detection-in-breath-non-invasive-assessment-of-illicit-or-pharmaceutical-drugs
#20
Phillip Trefz, Svend Kamysek, Patricia Fuchs, Pritam Sukul, Jochen Schubert, Wolfram Miekisch
Breath analysis not only holds great potential for the development of new non-invasive diagnostic methods, but also for the identification and follow up of drug levels in breath. This is of interest for both, forensic and medical science. On the one hand, the detection of drugs of abuse in exhaled breath - similar to the well-known breath alcohol tests - would be highly desirable as an alternative to blood or urine analysis in situations such as police controls for drugged driving. The noninvasive detection of drugs and their metabolites is thus of great interest in forensic science, especially since marijuana is becoming legalized in certain parts of the U...
February 21, 2017: Journal of Breath Research
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