The kingdom is grappling with its worst virus outbreak so far and registered a new daily high of 23,418 infections on Friday. clothing, personal protective equipment (PPE)) can affect the resulting wound profiles.Three protesters were injured when Thai police fired tear gas and rubber bullets at a Bangkok rally Friday - the third time this week - as coronavirus cases soar and anger builds over the government's handling of the pandemic. Key messages are that test variables, projectile type (bullet, fragmentation), impact site on the body and intermediate layers (e.g. This paper aims to provide an overarching review of the use of gelatine for wound ballistics studies it is not intended to provide an extensive review of wound ballistics as that already exists, e.g. Research areas that use gelatine blocks are diverse and include ammunition designers, the medical and forensics communities and designers of ballistic protective equipment (including body armour). One set of researchers aim to improve the lethality of the projectile, and the other to understand the effects of the projectile on the body to improve survivability. The gelatine is used to visualise the temporary and permanent wound profiles elements of which are recognised as providing a reasonable approximation to wounding in humans. comparison of ammunition effects using a material that it is assumed represents (some part of) the human body. In our opinion, it would be worth to develop a new, more representative material for ballistic which simulates the human bone.īlocks of gelatine are used in both lethality and survivability studies for broadly the same reason, i.e. Finally, the difference in bullet deformation could be caused by the choice of the bone simulant, which might under-represent either the strength or the density of the human bone. The “open shape” model allowed a better controlling on the shooting parameters than the “spherical” model. However, the projectiles recovered from the models showed less deformation than the bullets collected during the autopsies. When the projectile was retained, the use of both models allowed reproducing the wounds characteristics observed on both victims in terms of penetration and ricochet behaviour. The results of the models have been compared to the findings of post-mortem computed tomography (PMCT) and the autopsy findings.Out of the six shots, two perforated the models and four were retained. Two different types of models (“open shape” and “spherical”) have been assembled using leather, polyurethane and gelatine to simulate respectively skin, bone and soft tissues. The thickness of the different tissues and structures along the bullets trajectories as well as the incident angles between the bullets paths and the skull walls have been measured and reproduced during the assemblage of the synthetic head models. This study has been triggered by the findings observed during the autopsy performed on two victims killed in the same shooting incident, with similar wounding characteristics namely two retained head shots with ricochet against the interior wall of the skull both projectiles have been recovered during the autopsies after migration in the brain parenchyma. However, despite the efforts in the research of “surrogates” in the field of forensic ballistic, the development of synthetic models needs still to be improved through a validation process based on specific real caseworks. For this purpose, several “simulants” can be used. In shooting crimes, ballistics tests are often recommended in order to reproduce the wound characteristics of the involved persons.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |