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291.
Alex Almeida Chedid BSc Larissa Silva Azevedo PhD Ayla Roberta Borges da Silva Galaço PhD Thiago Rui Casagrande BSc Osvaldo Antonio Serra PhD Marcelo Firmino de Oliveira PhD 《Journal of forensic sciences》2023,68(3):780-789
Currently, SEM-EDS is used to detect gunshot residue (GSR) from the presence of Ba, Pb, and Sb in the sample. However, the development of new nontoxic ammunition (NTA) has prevented conventional metals from being found. In this work, we aim to determine the presence of an inorganic luminescent chemical marker based on rare earth in gunshot residues using the technique of squarewave voltammetry (SWV). After firing, the luminescent complex [(Eu2Zr)(btc)3(Hbtc)0.5.6H2O], which is used as a chemical marker, can be detected under a UV lamp. An aqueous solution with 0.1 mol L−1 KCl as supporting electrolyte can be easily collected on carbon paste electrode surfaces for SWV analysis A = 100 mV, f = 10 Hz, and step potential of 5 mV are required. The luminescent marker incorporated into the carbon paste electrode showed two anodic peak currents in the region of 0.4 V (vs Ag/AgCl) and at 0.75 V (vs Ag/AgCl) and also a cathodic one in 0.4 V (vs Ag/AgCl). SEM-EDS was able to analyze the same voltammetric results for conventional and nontoxic ammunition containing the luminescent marker. Therefore, voltammetry and SEM-EDS are valid for detecting the new residue marker in GSR. Despite this, the electrochemical method is still more advantageous because of its low cost and lack of expensive equipment and supplies in forensic laboratories. 相似文献
292.
An Unusual Case Showing Fatal Rupture of a Gastric Ulcer or Gastromalacia? The Importance/Role of Histology for Differential Diagnosis 下载免费PDF全文
Fabio De‐Giorgio M.D. Ph.D. Maria Lodise M.D. Vincenzo L. Pascali M.D. Ph.D. Antonio G. Spagnolo M.D. Ph.D. Ernesto d'Aloja M.D. Ph.D. Vincenzo Arena M.D. 《Journal of forensic sciences》2015,60(1):240-242
Gastromalacia is the acute autolytic erosion of the gastric wall. It generally occurs postmortem, and it appears as a slimy brownish black region of the wall which occurs principally in the gastric fundus. A 59‐year‐old woman died in the Emergency Department following a 2‐day period of mild abdominal pain, vomiting, and diarrhea. A forensic autopsy was performed which revealed a rupture of the gastric fundus that had caused leakage of gastric content into the abdominal cavity. There was no macroscopic evidence of peritonitis, and the stomach wall adjacent to the rupture site showed marked thinning. The gross appearance was typical of gastromalacia. In contrast, histological observations revealed the presence of an ulcer at the site of perforation and a severe acute inflammatory reaction indicating a robust reaction with an antemortem rupture. 相似文献
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294.
Antonio M. Díaz Fernández 《Intelligence & National Security》2013,28(2):223-244
The functioning and composition of the Spanish Intelligence Community is not regulated in detail by any legal regulations, and neither the intelligence service nor the government have specified these despite the repeated references they make to them. This article sets out to establish what actually constitutes the Intelligence Community in Spain; thus, after a brief theoretical discussion in which the two major categories of members – consumers and producers – are identified, a model of the intelligence community in Spain is set forth on the basis of the interrelations between its members and their roles in the decision-making process. In its preparation, besides analyzing the existing legislation, 52 interviews were carried out with individual participants in all the structures, so as to reach an understanding of the role played by each one, to evaluate its performance and to propose some guidelines for improvement. 相似文献
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296.
E‐Government Technology Transfer: A Case Study of the Implementation of a European Patent Management System in Brazil 下载免费PDF全文
In order to bolster the emerging but still underdeveloped conceptualization of e‐government technology transfer, we examine the implementation of a European Patent Management System in Brazil. The case study provided in this article offers opportunities to improve understanding on technical and organizational issues associated with e‐government technology transfer. Our findings provide evidence that the transfer of e‐government technology from a European to a Brazilian context requires multiple adaptations of the original design, intensive learning on the side of the recipient organization, and flexible implementation plans. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
297.
Juan Antonio Becerra-García 《The journal of forensic psychiatry & psychology》2014,25(1):113-119
Childhood abuse has an important negative influence on long-term executive functioning performance. Although this has been studied in non-offenders (controls), few investigations have examined offender samples. The aims of this study were: to study the influence of childhood abuse history on adulthood executive functioning in offenders, and to examine whether executive performance is affected differentially by different abusive events. It was found that in comparison with controls (n?=?17) and with non-abused offenders (n?=?22), the abused offenders (n?=?18) have poorer performance on psychomotor-cognitive processing speed and cognitive flexibility. In abused offenders, it was also found that physical abuse events primarily and significantly affected adulthood performance in these cognitive abilities. In conclusion, this study helps us to know, preliminarily, the neurocognitive profile of abused offenders and how different abusive events suffered in childhood (e.g. physical and emotional abuse) differentially affect executive functioning of this sample. 相似文献
298.
Edmi Cortes M.D. Antonio Cubano M.D. John E. Lewis Ph.D. Daniel Castellanos M.D. 《Journal of forensic sciences》2011,56(1):155-160
Abstract: Controversy has surrounded the use of antidepressants and suicidal behaviors in youth. This study reviewed the Medical Examiner’s Office records of 253 persons aged 24 years or younger classified as suicides in Miami‐Dade County, Florida, from 1990 to 2007. Information was collected regarding demographic information, suicidal characteristics, psychiatric and psychosocial factors, and toxicology results. Eighty‐five percent of the sample was men, and 53.4% of the subjects were Hispanic. Consistent with previous literature, the existence of antidepressants at autopsy was rare; present in only 6% (n = 15) of the victims. The occurrence of antidepressants was not significantly different between Hispanics (n = 7) and non‐Hispanics (n = 8). The incidence of antidepressants was weakly correlated with a tendency to be men and no history of psychiatric illness. The presence of antidepressants in Hispanic youth suicide victims was similar to non‐Hispanics. 相似文献
299.
Torres-Ruiz A 《Latin American research review》2011,46(1):30-53
The fight against HIV/AIDS is an example of a global struggle for the promotion of sexual health and the protection of human rights for all, including sexual minorities. It represents a challenge for the understanding of its impact on political, social, and economic processes. My central goal in this piece is twofold. First, I underline the importance of a political and human rights perspective to the analysis of the global response to the pandemic, and I introduce the concept of policy networks for a better understanding of these dynamics. Second, I argue that, in the case of Mexico, the constitution of HIV/AIDS policy networks, which incorporate civil society and state actors, such as sexual minority activists and public officials, and their actions—both domestic and international—have resulted in a more inclusive HIV/AIDS policy-making process. However, serious human rights violations of HIV/AIDS patients and sexual minorities still remain. 相似文献
300.
This article examines the relationships between gender and technology in Spanish feminist praxis online and argues that different perspectives on online feminist community-building offer distinct responses to cyberactivism, which is considered central to sustaining efforts for social change. To ascertain whether Spanish virtual communities and cyberactivism have the potential to address the challenges posed by the relations between gender and technology, we analyse feminist scholar Remedios Zafra's theoretical proposals, and the different ways in which this theory intersects with the cyberactivism put forth by two feminist web portals, Ciudad de Mujeres and Mujeres en Red. We will discuss to what degree particular Spanish feminist theory and practice online adapts to or challenges utopianism regarding the liberating potential of technology. We will also examine how, in the face of critical arguments about such liberatory possibilities, two options present themselves for women's effective use of technology: inhabiting or occupying the web through the construction of feminist communities online. 相似文献