keyword
MENU ▼
Read by QxMD icon Read
search

forensic test

keyword
https://www.readbyqxmd.com/read/28547850/detection-of-contact-traces-of-powdery-substances
#1
Wojciech Pawłowski, Łukasz Matyjasek, Monika Karpińska
The current practice in securing the contact traces of chemical substances taken from clothes belonging to a person suspected of manual handling explosives is focused on pockets and cuffs. The outerwear worn by people who had contact with fluorescent powders that simulate explosives and drugs was the subject of this study. Clothes were first exposed to the test substance for a period of time and then analyzed by fluorescence methods to determine the location of the highest quantity of traces. The results obtained from the study confirm that the areas with the highest concentration of powdery traces are different from those suggested by current forensic practice...
May 26, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28547802/the-power-of-exclusion-using-automated-osteometric-sorting-pair-matching
#2
Jeffrey James Lynch, John Byrd, Carrie B LeGarde
This study compares the original pair-matching osteometric sorting model (J Forensic Sci 2003;48:717) against two new models providing validation and performance testing across three samples. The samples include the Forensic Data Bank, USS Oklahoma, and the osteometric sorting reference used within the Defense POW/MIA Accounting Agency. A computer science solution to generating dynamic statistical models across a commingled assemblage is presented. The issue of normality is investigated showing the relative robustness against non-normality and a data transformation to control for normality...
May 26, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28544375/proteomic-analysis-of-hair-shafts-from-monozygotic-twins-expression-profiles-and-genetically-variant-peptides
#3
Pei-Wen Wu, Katelyn E Mason, Blythe P Durbin-Johnson, Michelle Salemi, Brett S Phinney, David M Rocke, Glendon J Parker, Robert H Rice
Forensic association of hair shaft evidence with individuals is currently assessed by comparing mitochondrial DNA haplotypes of reference and casework samples, primarily for exclusionary purposes. Present work tests and validates more recent proteomic approaches to extract quantitative transcriptional and genetic information from hair samples of monozygotic twin pairs, which would be predicted to partition away from unrelated individuals if the datasets contain identifying information. Protein expression profiles and polymorphic, genetically variant hair peptides were generated from 10 pairs of monozygotic twins...
May 22, 2017: Proteomics
https://www.readbyqxmd.com/read/28535957/improving-oil-classification-quality-from-oil-spill-fingerprint-beyond-six-sigma-approach
#4
Hafizan Juahir, Azimah Ismail, Saiful Bahri Mohamed, Mohd Ekhwan Toriman, Azlina Md Kassim, Sharifuddin Md Zain, Wan Kamaruzaman Wan Ahmad, Wong Kok Wah, Munirah Abdul Zali, Ananthy Retnam, Mohd Zaki Mohd Taib, Mazlin Mokhtar
This study involves the use of quality engineering in oil spill classification based on oil spill fingerprinting from GC-FID and GC-MS employing the six-sigma approach. The oil spills are recovered from various water areas of Peninsular Malaysia and Sabah (East Malaysia). The study approach used six sigma methodologies that effectively serve as the problem solving in oil classification extracted from the complex mixtures of oil spilled dataset. The analysis of six sigma link with the quality engineering improved the organizational performance to achieve its objectivity of the environmental forensics...
May 20, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28535883/paper-based-microfluidic-devices-on-the-crime-scene-a-simple-tool-for-rapid-estimation-of-post-mortem-interval-using-vitreous-humour
#5
Paulo T Garcia, Ellen F M Gabriel, Gustavo S Pessôa, Júlio C Santos Júnior, Pedro C Mollo Filho, Ruggero B F Guidugli, Nelci F Höehr, Marco A Z Arruda, Wendell K T Coltro
This paper describes for the first time the use of paper-based analytical devices at crime scenes to estimate the post-mortem interval (PMI), based on the colorimetric determination of Fe(2+) in vitreous humour (VH) samples. Experimental parameters such as the paper substrate, the microzone diameter, the sample volume and the 1,10-phenanthroline (o-phen) concentration were optimised in order to ensure the best analytical performance. Grade 1 CHR paper, microzone with diameter of 5 mm, a sample volume of 4 μL and an o-phen concentration of 0...
June 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28535443/independent-validation-of-body-fluid-specific-cpg-markers-and-construction-of-a-robust-multiplex-assay
#6
Hannah Holtkötter, Vanessa Beyer, Kristina Schwender, Alina Glaub, Kristina Schulze Johann, Marianne Schürenkamp, Ursula Sibbing, Sabrina Banken, Peter Wiegand, Heidi Pfeiffer, Lynn Dennany, Marielle Vennemann, Marielle Vennemann
Potential forensic use of tissue-specific DNA methylation markers has recently been discussed for the identification of the biological source of a stain. In this study 13 promising markers were evaluated to identify suitable candidate markers for the development of a robust and reliable multiplex assay. The results of this study suggest that a combination of only four highly informative markers will be enough for clear body fluid identification. A multiplex assay was developed for the identification of menstrual blood, saliva, semen, and venous blood...
May 9, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28527983/when-a-death-apparently-associated-to-sexual-assault-is-instead-a-natural-death-due-to-idiopathic-hypereosinophilic-syndrome-the-importance-of-gamma-hydroxybutyric-acid-analysis-in-vitreous-humor
#7
Francesco Paolo Busardò, Francesca Portelli, Angelo Montana, Maria Concetta Rotolo, Simona Pichini, Emiliano Maresi
We here report a case involving a 21-year-old female, found dead in a central square of a city in the south of Italy. Initial evidences and circumstances were suggestive of a death associated with a sexual assault. Two peripheral blood and two vitreous humor samples were collected for the purpose of gamma-hydroxybutyric acid (GHB) testing from the dead body at two different post-mortem intervals (PMIs): approximately 2 (t0) and 36 (t1) hours. The obtained results showed that, between t0 and t1, there was an increase of GHB concentrations in peripheral blood and vitreous humor of 66...
April 11, 2017: Legal Medicine
https://www.readbyqxmd.com/read/28527363/postmortem-microbial-communities-in-burial-soil-layers-of-skeletonized-humans
#8
Torri B Thomas, Sheree J Finley, Jeremy E Wilkinson, Daniel J Wescott, Azriel Gorski, Gulnaz T Javan
Microorganisms are major ecological participants in the successional decomposition of vertebrates. The relative abundance, or the scarcity, of certain microbial taxa in gravesoil has the potential to determine the ecological status of skeletons. However, there are substantial knowledge gaps that warrant consideration in the context of the surrounding terrestrial ecosystem. In the current study, we hypothesized that i.) soil microbial diversity is disparate in the latter stage of decomposition (skeletonization) compared to the earlier stages (fresh, bloat, active and advanced decay), and ii...
May 3, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28520764/rib-biomechanical-properties-exhibit-diagnostic-potential-for-accurate-ageing-in-forensic-investigations
#9
Andrea Bonicelli, Bledar Xhemali, Elena F Kranioti, Peter Zioupos
Age estimation remains one of the most challenging tasks in forensic practice when establishing a biological profile of unknown skeletonised remains. Morphological methods based on developmental markers of bones can provide accurate age estimates at a young age, but become highly unreliable for ages over 35 when all developmental markers disappear. This study explores the changes in the biomechanical properties of bone tissue and matrix, which continue to change with age even after skeletal maturity, and their potential value for age estimation...
2017: PloS One
https://www.readbyqxmd.com/read/28514701/a-biased-opinion-demonstration-of-cognitive-bias-on-a-fingerprint-matching-task-through-knowledge-of-dna-test-results
#10
Sarah V Stevenage, Alice Bennett
One study is presented which explores the biasing effects of irrelevant contextual information on a fingerprint matching task. Bias was introduced by providing the outcomes of a DNA test relating to each fictitious case under consideration. This was engineered to suggest either a match, no match, or an inconclusive outcome, and was thus either consistent, misleading or unbiased depending on the ground truth of each fingerprint pair. The results suggested that, when the difficulty of the fingerprint matching task was measurably increased, participants became more vulnerable to the biasing information...
May 1, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28511513/sexual-dimorphism-of-maxillary-sinus-a-morphometric-analysis-using-cone-beam-computed-tomography
#11
Ayeesha Urooge, Bharati A Patil
INTRODUCTION: Age and sex determination in forensic sciences are primary components of any skeletal analysis. As most bones used for sex determination are recovered in incomplete state, it is often necessary to use bones that are recovered intact e.g., the maxillary sinus. Cone Beam Computed Tomography (CBCT) can provide precise information about complex anatomical structures, as it is characterized by rapid volumetric image acquisition with high resolution. AIM: The present study was designed to evaluate the size and volume of Maxillary Sinus (MS) in determining gender by CBCT...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28511095/independent-validation-of-dna-based-approaches-for-age-prediction-in-blood
#12
Sohee Cho, Sang-Eun Jung, Sae Rom Hong, Eun Hee Lee, Ji Hyun Lee, Soong Deok Lee, Hwan Young Lee
Numerous molecular biomarkers have been proposed as predictors of chronological age. Among them, T-cell specific DNA rearrangement and DNA methylation markers have been introduced as forensic age predictors in blood because of their high prediction accuracy. These markers appear highly promising, but for better application to forensic casework sample analysis the proposed markers and genotyping methods must be tested further. In the current study, signal-joint T-cell receptor excision circles (sjTRECs) and DNA methylation markers located in the ELOVL2, C1orf132, TRIM59, KLF14, and FHL2 genes were reanalyzed in 100 Korean blood samples to test their associations with chronological age, using the same analysis platform used in previous reports...
April 28, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28504203/internal-validation-of-strmix%C3%A2-for-the-interpretation-of-single-source-and-mixed-dna-profiles
#13
Tamyra R Moretti, Rebecca S Just, Susannah C Kehl, Leah E Willis, John S Buckleton, Jo-Anne Bright, Duncan A Taylor, Anthony J Onorato
The interpretation of DNA evidence can entail analysis of challenging STR typing results. Genotypes inferred from low quality or quantity specimens, or mixed DNA samples originating from multiple contributors, can result in weak or inconclusive match probabilities when a binary interpretation method and necessary thresholds (such as a stochastic threshold) are employed. Probabilistic genotyping approaches, such as fully continuous methods that incorporate empirically determined biological parameter models, enable usage of more of the profile information and reduce subjectivity in interpretation...
April 5, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28492080/artemisinin-luminol-chemiluminescence-for-forensic-bloodstain-detection-using-smart-phone-as-detector
#14
Wenyue Gao, Chao Wang, Kateryna Muzyka, Shimeles Addisu Kitte, Jianping Li, Wei Zhang, Guobao Xu
Forensic luminol chemiluminescence test is one of the most sensitive and popular methods for the determination of latent bloodstains. It mainly uses hydrogen peroxide or sodium perborate as coreactants. The easy decomposition of hydrogen peroxide and sodium perborate in the presence of many ions significantly affects the selectivity. Artemisinin is a natural peroxide that is quite stable in the presence of common ions. In the present study, artemisinin has been exploited for the forensic bloodstain chemiluminescence detection for the first time...
May 11, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28486970/wing-morphometrics-as-a-tool-in-species-identification-of-forensically-important-blow-flies-of-thailand
#15
Narin Sontigun, Kabkaew L Sukontason, Barbara K Zajac, Richard Zehner, Kom Sukontason, Anchalee Wannasan, Jens Amendt
BACKGROUND: Correct species identification of blow flies is a crucial step for understanding their biology, which can be used not only for designing fly control programs, but also to determine the minimum time since death. Identification techniques are usually based on morphological and molecular characters. However, the use of classical morphology requires experienced entomologists for correct identification; while molecular techniques rely on a sound laboratory expertise and remain ambiguous for certain taxa...
May 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28486143/association-between-frontal-sinus-morphology-and-craniofacial-parameters-a-forensic-view
#16
Suleyman Kutalmış Buyuk, Ahmet Karaman, Yasin Yasa
The aim of this study was to evaluate the morphologic structure of the frontal sinuses with postero-anterior cephalometric radiographs in Turkish adolescents and to compare the findings between genders. The study sample consisted of 148 subjects divided into two groups (74 male subjects; mean age: 14.55 ± 1.42 years-74 female subjects; mean age: 14.95 ± 1.80 years). The right and left maximum height and width of the frontal sinus, maxillary width, nasal width, cranial width, antegonial width parameters were measured in 148 postero-anterior cephalometric radiographs...
May 3, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28479711/comparative-analysis-of-lip-with-thumbprints-an-identification-tool-in-personal-authentication
#17
Rashmi Naik, B R Ahmed Mujib, Neethu Telagi, Jaydeva Hallur
CONTEXT: Identification of person living or dead using diverse characteristics is the basis in forensic science. The uniqueness of lip and fingerprints and further, association between them can be useful in establishing facts in legal issues. AIMS: The present study was carried out to determine the distribution of different lip print patterns among subjects having different thumbprint patterns and to determine the correlation between lip print patterns and thumbprint patterns...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28475943/psychometric-properties-of-the-motivational-interviewing-treatment-integrity-coding-system-4-2-with-jail-inmates
#18
Mandy D Owens, Lauren N Rowell, Theresa Moyers
Motivational Interviewing (MI) is an evidence-based approach shown to be helpful for a variety of behaviors across many populations. Treatment fidelity is an important tool for understanding how and with whom MI may be most helpful. The Motivational Interviewing Treatment Integrity coding system was recently updated to incorporate new developments in the research and theory of MI, including the relational and technical hypotheses of MI (MITI 4.2). To date, no studies have examined the MITI 4.2 with forensic populations...
April 27, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28473853/3d-evaluation-of-maxillary-sinus-using-computed-tomography-a-sexual-dimorphic-study
#19
Balaji Babu Bangi, Uday Ginjupally, Lakshmi Kavitha Nadendla, Bhavana Vadla
Purpose. Gender determination is considered to be an important step in the reconstruction of the biological profile in forensic medicine. Maxillary sinus can be used for identification of sex when other methods are indecisive. Computed tomography (CT) provides an excellent method for examining maxillary sinuses. Hence the aim of the study was to determine the accuracy of gender determination using maxillary sinus with CT. Materials and Methods. CT images were used to measure the mediolateral, superoinferior, and anteroposterior dimensions and the volume of the maxillary sinuses in 100 patients (50 males and 50 females) to determine the gender of an individual for forensic identification...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28472756/development-and-validation-of-innoquant-%C3%A2-hy-a-system-for-quantitation-and-quality-assessment-of-total-human-and-male-dna-using-high-copy-targets
#20
Andrew Loftus, Gina Murphy, Hiromi Brown, Anne Montgomery, Jonathan Tabak, James Baus, Marion Carroll, André Green, Suresh Sikka, Sudhir Sinha
The development and validation of InnoQuant(®) HY, a real-time PCR system containing four DNA targets-two RE autosomal targets of different sizes, male specific targets, and an internal positive control target-are described herein. The ratio of the two autosomal targets provides a Degradation Index, or a quantitative value of a sample's degradation state. The male specific targets are multi-copy targets located on the Y chromosome, which provides information about a sample's male DNA composition. The experimental results demonstrate InnoQuant HY as a robust qPCR method producing accurate DNA quantitation results even at low dynamic ranges, with reproducibility among population groups...
April 17, 2017: Forensic Science International. Genetics
keyword
keyword
35715
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"