Gaceta internacional de ciencias forenses. 2018. No. 26

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    Medición de la velocidad de automotor durante impactos y lanzamiento de peatones mediante video - análisis
    (2018) Torres Zúñiga, Vicente
    Via free -software we analyzed a movie (broadcast on internet) tha t shows a vehicle crashing rolling pedestrians over the westminster bridge in london. Conditioning the perspective and contrast of the frames, we used part of the bridge'S architectural structure to define a metric scale. The program allowed to monitor the vehicle to mark its spatial coordinates as a function of time; By means of a linear regression, we measured the speed during the impacts: 50.08 km/h, with a relative error of 19.2%. In the same film an object in free fall was observed, from the bridge to the river thames, it is inferred that it is a person previously impacted. The analysis obtained shows that the body'S center of mass reached up to 5 m in height and at the time of the collision, at least, it acquired a speed of 32 km/h, with a relative err or of 7.3%. The information is consistent with the specialized literature, but disagrees with the journalistic data. As far as we know, this is the first report that uses both a means and tools available to the public to put into detail the quantitative scope of the video analysis to study a transit event that involves the collision of multiple pedestrians.
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    Las huellas dactilares como herramienta esencial para la investigación criminal
    (2018) Rodas Alejos, Jackeline Isabel; Arreaga Quan, José Alberto
    the research involves a ser ies of analysis of two real cases, and that in Guatemala the violent death of two people, one of this is a woman and another process of investigation the death was a men. It was focused on the study of two specific cases t hat are similar and where through fragments prinsts finger collected in the crimescene, could be essential to the investigation and to obtain in one case a conviction twenty -five years in prison for the crime of murder and in the other case the accused or defendant has not yet been capture d, but currently has an arrest warrant. All these advances in research and judicialized process is of great satisfaction for those who work in the justice sector. In specific cases raised below and whose data are assumptions as to the name of the acc used, victims and witnesses, in order to protect their identity. Has been taken as a core base accuracy and reliability as evidence as fingerprints, it can be determined that fingerprints are unique no two people with the same tracks, so it gives certainty and support research and this It leads to the conviction of those res ponsible for committing crimes. We see that scientific knowledge is predictive based on the laws and theories. For example, the states dactyloscopy fingerprints are unique to that each individ ually, so that finding to mark on the crime scene that constitutes proof the person to whom the mark at some point was there. So in both cases effec tively plated the two defendants are located at the crime scene not only with that of the witnesses but also with scientific support as were the fragments of fingerprints. With this law in a fair based on the conclusions ma de by forensic science applies. The forensic knowledge of actual data that can be observed and verified in great detail. This means that it i s accurate knowledge that should not give rise to doubts. Since no one can be judged by a fact tha t has not been tested in court. Fragments fingerprints were compared with the database of the National Registry of Persons and the National Institute of Foren sic Sciences of Guatemala, specifically the Scientific Technical Department Crime Laboratory Unit of Dactiloscopy . So in the second case described was performed based on the obtained demographic information Automated System Fingerprint Identification Syste m (AFIS) also with the National Institute of Forensic Sciences and the National Registry of Persons (Automated Fingerprint Identification System (AFIS) Past With The National Institute of Forensic Sciences and the National Registry of Persons).
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    Análisis microbiológicos y físico - químicos como pruebas novedosas y determinantes en un caso de envenenamiento de la fauna silvestre en el sur de España
    (2018) Zorrilla Delgado, Irene; Fernández Verón, I.
    Poaching wildlife species and eradicating predators from game reserves are not considered crimes per se under Spanish legislation. Furthermore, in accordance with Spain?s Penal Code and Constitution, any doubt regarding a suspect?s guilt manda tes a judge/cr own prosecutor to rest a case without presenting charges. By contrast, the use of a substance with the intent to poison wildl ife is deemed both an offense according to the Wildlife Act (2003) and a crime under the Spanish Penal Code. Here we report on the atypical analysis of a unique piece of evidence that was retrieved during an on -site investigation into allegations of wildlife poaching and poisoning on a game reserve in southern Spain. The findings proved critical in linking other recovered evidence to the suspect and, in particular, showing intent to poison, which ultimately led to the closure of the case and the addition of another tool in the growing coffer of approaches for resolving similar cases in Andalucía. To our knowledge this is the first inst ance in which the presence of bacteria and evaluation of physico -chemical parameters have been used as integral pieces of evidence in a wildlife poisoning case.
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    Y no estaba muerto ...
    (2018) Verdú Pascual, Fernando Alejo