Fatal air embolism during renal dialysis

Air embolism during renal dialysis is extremely rare because of the safeguards built into the apparatus and procedures currently used. This case is attributable to improper techniques used with venous access outside the monitored system.On completion of dialysis and disconnect from the machine and its safeguards, this patient had leg cramps. This common postdialysis complaint is routinely treated with intravenous saline from a fresh bag hung outside the machine for this purpose. Unfortunately, a previously used bag had not been replaced and soon ran empty after being connected to the patient's venous access. It was replaced hurriedly with a new bag without first bleeding the system of air.The patient collapsed, was transported to a hospital, and died 72 hours later without regaining consciousness. The diagnosis was confirmed by radiological and pathological examinations.The various mechanisms and pathways of venous to material transit are discussed.     

Nanoscale analysis of the interaction between cyanoacrylate and vacuum metal deposition in the development of latent fingermarks on low-density polyethylene

Vacuum metal deposition (VMD) has been previously demonstrated as an effective development technique for latent fingermarks and in some cases has been shown to enhance prints developed with cyanoacrylate (CA) (superglue) fuming. This work utilizes scanning electron microscopy (SEM) to investigate the interactions of the two development techniques when applied to latent fingermarks on low-density polyethylene. CA is shown to act principally on the eccrine deposits around sweat pores, where polymerization results in long polymer fibrils a few 100 nm in width. Subsequent VMD processing results in additional areas of development, for example, between pores. However, the primary mode of deposition of zinc is by interaction with the polymerized CA, the fibrils of which become decorated with zinc nanoparticles. Areas with limited CA deposition and no significant polymerization are also enhanced with the VMD process, resulting in increased print development.     

Identification procedures as a part of death investigation in Turkey

Forensic identification techniques include the examination of ID cards, the decedent's private belongings, fingerprints, footprints, lip marks, dental findings, red blood cell enzymes, performing photograph matching, facial reconstruction, visual identification, and DNA "fingerprinting." As part of forensic examinations, the identification of corpses that are fresh, decomposed, fragmented, or skeletonized as well as individual body parts and human remains can be requested. Identification becomes a challenging task for forensic terms particularly in mass-disaster situations. Each identification case should be considered to its own merit and the way to do that should be based on the effectiveness and cost of each method used. In Turkey, one of the major duties of the medicolegal system on the investigation of deaths is to identify the deceased if unknown.This study is undertaken to investigate the procedures, as well as their validities, used to deal with individualization of dismembered bodies directly sent to the Council of Forensic Medicine, Ministry of Justice, for autopsy and/or visual identification, as well as those received from peripheral districts for forensic identification. According to the Turkish Penal Procedural Law, a positive identification of the deceased is mandatory before performing an autopsy. According to the law, the ID cards are not taken to be sufficient for recognition of the deceased, and the major way of identification in daily practice is visual identification by a relative or any recognizant person to approve the identification to the prosecutor. If visual identification fails, fingerprints, dental x-rays or body x-rays, and DNA "fingerprinting" can be used to establish identity when compared with known records of the individual obtained by law enforcement.This retrospective study was carried out into 421 dismembered bodies, among 3063 autopsies performed in year 2002 by the Department of Morgue at the Council of Forensic Medicine, with particular insight into the identification procedures undertaken and their results. The overall negative identification rate was 30.4%, and in 1% of the cases, the visual identification by relatives were not confirmed by DNA identification and taken as misidentified.     

Peculiarities of organization and performance of forensic medical expertise of the corpses of persons died of acute radiation injury

This paper is concerned with the topical problems of forensic medical diagnostics of acute radiation injury. The general and specific problems pertaining to the organization and performance of forensic medical expertise of the corpses of persons deceased by reason of acute radiation sickness are considered. The special emphasis is laid on the selection of autopsy materials and their referring to specialized laboratories for the additional investigation. The methods of anti-radiation protection of the medical personnel are considered.     

Are the perpetrators of violence one and the same? Exploring the co-occurrence of perpetration of physical aggression in the United States

Important gaps exist in our understanding of aggressive behavior and the extent to which aggression involves one or more types of victims. This information is critical for determining the utility of integrated approaches for violence prevention versus continuation of independent efforts for reducing community violence, partner violence, and child maltreatment. To better understand the overlap in aggressive behaviors within the general population, the authors examine the co-occurrence of self-reports of physically striking strangers, acquaintances, intimate partners, and children among a nationally representative sample of 3,024 U.S. adults. The findings from this cross-sectional random digit dial telephone survey show that more than a third of the population reports engaging in at least one form of aggression and that, of these, a third had perpetrated violence against more than one type of victim. The percent of respondents who reported perpetrating violence against more than one type of victim range from 13% (percent of those striking a friend or acquaintance who also struck a child) to 34% (percent of those striking a friend or acquaintance who also struck a stranger). Furthermore, engaging in one type of aggression substantially increases the odds of engaging in another from 1.5 to 4 times. The findings suggest potential value in pursuing both integrated and independent approaches in research and prevention.     

Transitions in the negotiations on climate change: from prisoner’s dilemma to chicken and beyond

Frequently, international environmental negotiations have been analyzed in two-agent (2 × 2) games. Yet, in order to involve additional strategies, (3 × 3) games gained attention recently. We employ such a (3 × 3) game setting in order to depict international negotiations on climate change and integrate both the prisoner’s dilemma and the chicken games in this setting. We analyze transitions of negotiation states and describe how ancillary benefits and first-mover advantages influence agents’ behavior in the negotiations, when three different strategies or levels of climate protection efforts are available. Finally, we also integrate strategies to mitigate and to adapt to climate change into the analysis in the (3 × 3) game setting.