Jornal de pesquisa forense

Ignitable liquids are present in trace amounts in samples collected from arson scenes therefore their chemical composition often differs from their original composition. This is due to partial evaporation, burning and contamination by pyrolysis products at the scenes.

The research was done using two techniques, passive headspace concentration with activated charcoal strip and statistical Analysis, to classify weathered kerosene and diesel fuel. The passive headspace used GC-FID chromatogram pattern to visually identify both weathered ignitable liquids while statistical analysis used cluster formation to group them based on unique characteristics of their hydrocarbons and materials used in the samples.

Four case studies were done which consisted of forty-two experiments carried out on twenty-six weathered and unweathered samples that were analyzed under various conditions which included various time of burning, weathering and oven temperature. The Petroleum based ignitable liquids, kerosene and diesel, were used on different types of materials for analysis under various atmospheric conditions.

The result showed visual distinction between weathered kerosene and diesel fuel at the initial stage of weathering but it was more difficult to distinguish as samples became weathered over time. Hence, this is one of the reasons why the chromatogram alone cannot be used to visually distinguish between these weathered samples. Therefore, the combination of the chromatographic pattern and statistical method were applied in this research.

It was possible to distinguish between the weathered kerosene and diesel fuel using statistical analysis based on n-alkane data derived from Gas Chromatography- Flame Ionization Detector (GC-FID) method.

The advent of genomic and mitochondrial DNA procedures has not displaced the practical use of dental identification after mass disasters or when bone DNA extraction is impossible. Sometimes the ethical aspect is the basic aim of the identification. In this forensic case the purpose of identification was to give psychological comfort to the mother that she has doubted about the identity of the remains of his presumed son. The forensic odontologist occupying a crucial role in the identification of human remains. Without being able to identify the presence of the #18 not the #17 and especially the #47 not the #46 identity would be improperly excluded.

Objective: The objective of the present study was to analyze the conditions of epithelial cells transfer after an initial deposition on a first object to a second object (secondary transfer). This study should provide an experimental model which should contribute to better understand and analyze all the transfer mechanisms.
Methods: Using glass slides and cotton gauzes as supports for the transfer of epithelial cells from an object to another one, we analyzed the occurrence and efficiency of cells transfer in different conditions of hygrometry and contact.
Results: Our investigation reveals that after one hour deposition on a glass slide, the epithelial cells are no longer able to transfer to a second support. Moreover, our results also demonstrate that in opposition with the environmental factors such as hygrometry which are determinant for the transfer mechanisms, the strength of the contact between the glass slide and cotton gauze does not influence the cells transfer efficiency.
Conclusion: In conclusion, the secondary transfer of epithelial cells is only possible if the cells are not strongly attached to their support.

In general, views of death and life or human remains differ depending on religions, cultures or countries. The Japanese perception of life and death is also unique. Hence, if Japanese are involved in disasters or accidents, and lose their lives abroad, these differences in views might lead to diplomatic issues or international conflicts. There were some cases that caused international problems in the past. For example, Ehime-maru incident which occurred offshore Hawaii in 2001, and Christchurch earthquake in New Zealand in 2011. The aim of this report is to make the Japanese views and thoughts on death and life, and human remains known worldwide and understood internationally.

Knowledge of the factors influencing the ecology of blow flies, especially the dynamic population equilibrium, is essential in forensic entomology. However, lack of knowledge of the action of psychoactive drugs on the population dynamics of these flies may affect the inferences that experts must make in medico-legal reports. This study evaluated the effects of amphetamine and phenobarbital on the population dynamics of Chrysomya albiceps (Wiedemann), by combining laboratory experimentation and mathematical modelling. Only amphetamine and its control, methanol, influenced the qualitative dynamic behaviour of Chrysomya albiceps, stabilising chaotic populations. The results are discussed in an ecological and forensic context.

Violent offending is the result of the combination of personality, cognitive and emotional elements that shape interpersonal styles. Violent aggression is a form of interpersonal interaction in which personality clues amalgamate internal elements and blend them into behavior. Current study explores personality models of 30 incarcerated female murderers. Participants were assessed with MCM-III. Aim of the research is to determine what kind of relation exists between personality and murder in women who kill. Severe Personality Disorders were diagnosed in 24 cases.

In order to thwart cyber-attacks, an antimalware program is set up or developed. That is to say, we learn cyber defense by considering that only viral intrusions are responsible for cyber-attacks. The human behind every cyberattack is unfortunately obscured although human beings are the ones be find every cybercriminal act, they are the initiators whether in real or virtual space. In order to better understand this fact, the transversal universe and its occupants must be considered better than done nowadays. Investigating in virtual and real spaces is coming up against the very reasons that have created virtual space and that made cybercrime still growing strongly. In the virtual space, the occupants work differently to develop new behaviors; new ways of living and moving, even new ways of thinking that can sometimes be reproduced in the real space. In addition, the modus operandi circulates via the darkweb so that the lists can be reproduced and developed in the real space. The "original" signature changes according to the profiles that reshuffle offenses, which further complicates the investigations. Thus, integrating and understanding the cyber universe requires, above all, discovering new profiles in the cyber universe and making a behavioral differentiation between the virtual space and the real one according to specificities of the cyberspace itself. This is I am developing through the present research by exposing three concepts of mine: This is of “avatarisation”, “transverse zone” and “virtual intelligence.”

Though phallometric assessment is no stranger to controversy it is still a procedure which is widely recognized as having considerable value. Researchers have cited it as a reliable means to assess age and gender preferences and to assess a preference for coercive versus consenting sexual activities. It is also the only method which allows a determination of an offender’s ability to inhibit deviant sexual arousal, a factor of principal importance is assessing risk of reoffending. This procedure is weakened, however, by the problem of low arousal, and often results are deemed too low to be interpreted. A factor contributing to low arousal may be the widespread availability of pornographic material on the internet, for this may desensitize participants to weaker stimuli used in some labs. In response to ethical concerns some labs have adopted the use of audio stimuli alone, and this may compromise the procedure. This study compares arousal to consenting adult heterosexual, adult female rape, and heterosexual pedophilia themes in response to audio versus slide versus video stimuli. Results from 142 incarcerated inmates reveal that visual stimuli are most effective and that the use of audio stimuli alone often yields sexual arousal profiles which are too low to be interpretable.