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131.
Evaluation of the Forensic Utility of Scanning Electron Microscopy‐Energy Dispersive Spectroscopy and Laser Ablation‐Inductively Coupled Plasma‐Mass Spectrometry for Printing Ink Examinations
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Ruthmara Corzo B.Sc. Kiran Subedi Ph.D. Tatiana Trejos Ph.D. José R. Almirall Ph.D. 《Journal of forensic sciences》2016,61(3):725-734
Improvements in printing technology have exacerbated the problem of document counterfeiting, prompting the need for analytical techniques that better characterize inks for forensic analysis and comparisons. In this study, 319 printing inks (toner, inkjet, offset, and Intaglio) were analyzed directly on the paper substrate using scanning electron microscopy‐energy dispersive spectroscopy (SEM‐EDS) and Laser Ablation‐Inductively Coupled Plasma‐Mass Spectrometry (LA‐ICP‐MS). As anticipated, the high sensitivity of LA‐ICP‐MS pairwise comparisons resulted in excellent discrimination (average of ~ 99.6%) between different ink samples from each of the four ink types and almost 100% correct associations between ink samples known to originate from the same source. SEM‐EDS analysis also resulted in very good discrimination for different toner and intaglio inks (>97%) and 100% correct association for samples from the same source. SEM‐EDS provided complementary information to LA‐ICP‐MS for certain ink types but showed limited utility for the discrimination of inkjet and offset inks. 相似文献
132.
Natur und Recht - Zucht und Haltung immundefizienter Labortiere wurden bislang nicht als Tierversuch gewertet, soweit die Tiere mit an Sicherheit grenzender Wahrscheinlichkeit nicht aufgrund des... 相似文献
133.
María Patricia Navas Lorena Maneiro Olalla Cutrín José Antonio Gómez-Fraguela Jorge Sobral 《Legal and Criminological Psychology》2021,26(2):196-214
Previous research has revealed a strong association between moral disengagement (MD) and criminal behaviour. However, few studies have attempted to examine the contribution of dark personalities to MD. This study aims to first analyse the differences between forensic and community samples in the use of MD strategies and then replicate the factorial structure of the Dark Triad Dirty Dozen scale in an incarcerated sample as a pre-condition to examine the relationship between dark triad (DT) traits (i.e. Machiavellianism, psychopathy and narcissism) and MD. The sample comprised 160 incarcerated and 160 community adults. Comparisons between these two groups demonstrate that the incarcerated sample scored higher in MD and DT than the community sample. Furthermore, different MD strategies were related to each of the DT traits in the forensic and community samples. The results of exploratory factor analysis for the incarcerated sample indicate adequate fit indices for a bifactorial model of the DT (a latent factor of the shared variance of these constructs named the global DT and three specific latent factors for each component of the DT). The SEM analysis for this bifactorial model and MD disclosed direct and significant relationships between the global DT and MD in the incarcerated adults, while the Machiavellianism factor was directly and significantly related to MD in the community adults. These results highlight the relevance of cognitive (i.e. MD) strategies in forensic contexts, especially in incarcerated adults who present high levels of this DT profile. 相似文献
134.
With a very high unemployment rate but at the first stage of a timid economic recovery, Spain held regional and local elections in May 2015. The election results showed the fall of traditional parties and the emergence of new forces and citizens’ platforms, which increased the fragmentation of the party system. The PP (Partido Popular – Popular Party) continued to be the most voted-for party but post-election agreements brought the left to power in eight of the 14 regions that held elections, ending four years of conservative general dominance. After commenting on the context, the campaign and the results of the elections, this article explores the main characteristics of the new party competition and examines the profile of those voting for new political alternatives. 相似文献
135.
A new, fast, and ultra-sensitive headspace sampling method using the Capillary Microextraction of Volatiles (CMV) device is demonstrated for the analysis of ignitable liquid residues (ILRs) in fire debris. This headspace sampling method involves the use of a heated can (60°C) to aid in the recovery of volatile organic compounds (VOCs) from medium and heavy petroleum distillates. Our group has previously reported the utility of CMV to extract gasoline at ambient temperature in less than 5 min in the field. This work evaluates the recovery and analysis of low mass loadings (tens of ng) of VOCs from charcoal lighter fluid, kerosene, and diesel fuel. Nonane, decane, undecane, tridecane, tetradecane, and pentadecane were selected for evaluation of recovery to represent these ILR classes. The face-down heated can headspace sampling technique was compared to the previously reported, non-heated, paper cup headspace sampling technique. Mass recovery improvements of 50%–200% for five of the six target compounds in diesel fuel were achieved compared to the non-heated sampling method. The average relative standard deviation (reported as % RSD) between the replicate trials decreased from an average of 28% to 6% when using the heated can method. Ignitable liquids were spiked onto burned debris in a live burn exercise and sampled using the heated can and paper cup headspace sampling techniques. The heated sampling technique reported here, for the first time, demonstrates an effective extraction method that when coupled to a portable GC–MS instrument allows for a sampling and analysis protocol in the field in less than 30 min. 相似文献
136.
A new pentaplex system to study short tandem repeat markers of forensic interest on X chromosome 总被引:16,自引:0,他引:16
Zarrabeitia MT Amigo T Sañudo C Zarrabeitia A González-Lamuño D Riancho JA 《Forensic science international》2002,129(2):85-89
A new method has been optimised to amplify five X chromosome short tandem repeat (STR) markers of interest in forensic medicine: human phosphoribosyl transferase (HPRTB), DXS101, androgen receptor (ARA), DXS7423 and DXS8377. Markers were conveniently amplified in a single PCR reaction with fluorochrome-labelled primers, which allowed the analysis of fragment sizes after injection into a capillary electrophoresis system. The most common alleles of each locus were sequenced and used in a control ladder to type unknown samples. 相似文献
137.
Lovo JS Saul J Fondevila M Salas A Brión M Lareu MV Carracedo A 《Forensic science international》2004,142(1):45-49
Eight Y-chromosome STRs were investigated in a male population sample from El Salvador. Complete Y-chromosomal STRs haplotypes were obtained in 121 individuals, among which 107 different haplotypes were observed. The two most common haplotypes were shared by approximately 4% of the sample, while 100 haplotypes were unique. The gene diversity was 0.9883 and the discrimination capacity was 0.8926. The combined Y-chromosome STR polymorphisms provide a powerful discrimination tool for routine forensic applications. 相似文献
138.
This article seeks to understand how development aid is translated into city management practice in the global South and the implications of this for the power dynamics between municipal governments and international aid agencies. The study examines La Chureca, the rubbish dump and slum of Managua, Nicaragua, and its regeneration programme, the Barrio Acahualinca Integrated Development Programme. In the article, we explore the formulation and initial implementation of the Programme in terms of the construction of an action net in which, by a chain of translations, the Programme was transformed from an aid programme managed by international aid organisations into the management practice of the city of Managua. Despite the silent infiltration of important issues brought to the municipal political agenda by the development aid programme, small acts of defiance and resistance were also enacted by local actors who twisted the Programme to fit local needs. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
139.
This paper uses a simultaneous equations model to analyze increases in intergovernmental fiscal transfers and associated vote changes in Portuguese legislative elections. The results suggest that election year increases in transfers by the central government to municipalities secure added votes, and that these transfers are targeted at jurisdictions where the government faces the risk of losing support. 相似文献
140.
This article explores the renewal of liberalism in Mexico over the last two decades. It argues that after the long period of one-party hegemonic rule, intellectuals have embraced many of liberalism’s tenets in public debates, such as economic and institutional reform, the defense of individual rights and freedom of expression, etc. It argues that the end of authoritarian rule made this renewal possible and attempts to account for key factors that unite intellectuals from very different ideological backgrounds. 相似文献