82 research outputs found

    O reconhecimento pessoal e a psicologia judiciária: falibilidade do testemunho como reforço do etiquetamento e violação ao in dubio pro reo.

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    The present article addresses aspects of eyewitness identification in Brazil and the United States, as well as some of the factors that imply the fallibility of testimony. The main purpose of the research is to understand how does each, Brazil and the United States, treat testimonial evidence? What are some of the factors the influence the fallibility of the testimony? Finally, does the non-observance of the legal criteria in the article 226 of the Brazilian Criminal Procedure Code reinforce the Labeling Approach and criminal selectivity? The methodology applied in the research consists in literature review and the analysis of some judicial cases in which eyewitness identification was used as evidence. The specific goals of the study were to analyze the Brazilian and North American doctrinal understanding of eyewitness identification; examine how the Brazilian courts addresses the issue; research the various factors that may influence the identification; and, finally, discuss about the criminal selectivity that can be reinforced by the non-observance of the legal criteria for eyewitness identification. One can conclude that the article 226 of the Criminal Procedure Code, even though it lacks some update, should be applied in its entirety in order to avoid the influence of factors such as false memories and issues involving cross racial identification, weapon effect, among others. Respecting legal criteria is also capable to avoid the strengthening of criminal selectivity and the Labeling Approach.O presente trabalho aborda o tema do reconhecimento pessoal no Brasil e nos Estados Unidos, bem como o estudo da psicologia judiciária relacionada ao testemunho. O objetivo desta pesquisa é entender qual é o tratamento dado à colheita da prova testemunhal no Brasil? E nos Estados Unidos? Quais são os fatores que influenciam na falibilidade do testemunho? Por fim, a inobservância dos requisitos do art. 226 do Código de Processo Penal representa reforço à Teoria do Etiquetamento e à seletividade penal? Como metodologia, adotou-se a revisão bibliográfica sobre o tema e a análise de alguns acórdãos exemplificativos sobre o assunto. O trabalho visou analisar a literatura, nacional e norte-americana, sobre o reconhecimento pessoal; examinar o entendimento jurisprudencial acerca do tema; abordar variados fatores que podem influenciar no ato do reconhecimento pessoal; e, por fim, debater sobre a seletividade penal, que pode ser reforçada pela inobservância dos critérios legais para o reconhecimento pessoal. Conclui-se que, embora careça de atualizações, o art. 226 do Código de Processo Penal deveria ser respeitado em sua integralidade, de modo a evitar a influência de fatores, como as falsas memórias e as problemáticas que envolvem o reconhecimento cross-racial, o weapon effect, dentre outros. Com respeito à legislação, aliado a técnicas adequadas de entrevista testemunhal, evita-se, assim, o fortalecimento da seletividade penal e da Teoria do Etiquetamento

    Efeito de diferentes tratamentos t?rmicos sobre microestrutura e microdureza de um sistema a?o C-Mn/revestimento de inconel 625.

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    A utiliza??o de tubos de a?o C-Mn na ind?stria de ?leo e g?s ? muito comum desde o nascimento desta ind?stria. Mesmo com a grande evolu??o da metalurgia destes a?os ao longo das ?ltimas d?cadas, o desafio de desempenho em ambientes severos de corros?o devido ?s caracter?sticas reativas (H2S, CO2) do petr?leo e seus derivados, imp?em uma nova era para a fabrica??o de tubos. A solu??o tecnol?gica mais direta seria a utiliza??o de a?os com alta liga (Ni, Cr) e/ou superligas de n?quel. No entanto, os custos de produ??o tornariam invi?veis pelo alto custo destes materiais. Neste contexto, ? crescente iniciativas de pesquisas para o desenvolvimento de overlay e/ou cladding, ou seja, revestimentos de a?os C-Mn usando superligas de n?quel e a?os inoxid?veis. Neste trabalho, foi utilizada a deposi??o de uma camada da superliga de n?quel Inconel 625 atrav?s do processo laser. Uma das desvantagens da deposi??o a laser ou qualquer outro processo de fus?o ? a forma??o de uma regi?o de descontinuidade microestrutural no a?o, chamada de ZTA (zona termicamente afetada pelo calor). Neste estudo, diferentes rotas de tratamentos t?rmicos foram investigadas com o objetivo de eliminar a ZTA e preservar as caracter?sticas originais do substrato e do revestimento.The application of C-Mn steel pipe in the oil & gas industry is quite common since starting of this industry. Even with the great evolution of the metallurgy of this type of steel over the last decades, the challenge is to overcome the corrosion severity caused by sour (H2S, CO2) species present in the petroleum and its derivates. The direct technological solution would be to replace the C-Mn steel by Ni-based superalloys and/or stainless steels. However, the high costs of these materials would make several projects impracticable. In this context, there are several initiatives in order to develop overlay and/or cladding, that means, coatings of C-Mn steels using superalloys and stainless steels. In this work, it was used an overlay deposition of Inconel 625 on the surface of a C-Mn steel using the laser process. A disadvantage of laser deposition, as it is for any deposition melting process, is the formation of a microstructural discontinuity in the steel substrate caused by the thermal cycle (HAZ = heat affected zone). In this study, different heat treatment routes were investigated aiming to eliminate the HAZ preserving the original characteristics of the substrate and of the coating

    In vitro and in vivo anticancer properties of a Calcarea carbonica derivative complex (M8) treatment in a murine melanoma model

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    <p>Abstract</p> <p>Background</p> <p>Melanoma is the most aggressive form of skin cancer and the most rapidly expanding cancer in terms of worldwide incidence. Chemotherapeutic approaches to treat melanoma have had only marginal success. Previous studies in mice demonstrated that a high diluted complex derived from <it>Calcarea carbonica </it>(M8) stimulated the tumoricidal response of activated lymphocytes against B16F10 melanoma cells <it>in vitro</it>.</p> <p>Methods</p> <p>Here we describe the <it>in vitro </it>inhibition of invasion and the <it>in vivo </it>anti-metastatic potential after M8 treatment by inhalation in the B16F10 lung metastasis model.</p> <p>Results</p> <p>We found that M8 has at least two functions, acting as both an inhibitor of cancer cell adhesion and invasion and as a perlecan expression antagonist, which are strongly correlated with several metastatic, angiogenic and invasive factors in melanoma tumors.</p> <p>Conclusion</p> <p>The findings suggest that this medication is a promising non-toxic therapy candidate by improving the immune response against tumor cells or even induce direct dormancy in malignancies.</p

    Traditional knowledge and cultural importance of Borassus aethiopum Mart. in Benin: interacting effects of socio-demographic attributes and multi-scale abundance

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    ResearchBackground: Eliciting factors affecting distribution of traditional knowledge (TK) and cultural importance of plant resources is central in ethnobiology. Socio-demographic attributes and ecological apparency hypothesis (EAH) have been widely documented as drivers of TK distribution, but their synergistic effect is poorly documented. Here, we focused on Borassus aethiopum, a socio-economic important agroforestry palm in Africa, analyzing relationships between the number of use-reports and cultural importance on one hand, and informant socio-demographic attributes (age category and gender) on the other hand, considering the EAH at multi-scale contexts. Our hypothesis is that effects of socio-demographic attributes on use-reports and cultural importance are shaped by both local (village level) and regional (chorological region level) apparency of study species. We expected so because distribution of knowledge on a resource in a community correlates to the versatility in the resource utilization but also connections among communities within a region. Methods: Nine hundred ninety-two face-to-face individual semi-structured interviews were conducted in six villages of low versus high local abundance of B. aethiopum spanning three chorological regions (humid, sub-humid and semiarid) also underlying a gradient of increasing distribution and abundance of B. aethiopum. Number of use-reports and score of importance of uses of B. aethiopum were recorded in six use-categories including medicine, food, handcraft, construction, firewood, and ceremonies and rituals. Data were analyzed using Poisson and ordered logistic modelsinfo:eu-repo/semantics/publishedVersio

    DNA Methods to Identify Missing Persons

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    Human identification by DNA analysis in missing person cases typically involves comparison of two categories of sample: a reference sample, which could be obtained from intimate items of the person in question or from family members, and the questioned sample from the unknown person-usually derived from the bones, teeth, or soft tissues of human remains. Exceptions include the analysis of archived tissues, such as those held by hospital pathology departments, and the analysis of samples relating to missing, but living persons. DNA is extracted from the questioned and reference samples and well-characterized regions of the genetic code are amplified from each source using the Polymerase Chain Reaction (PCR), which generates sufficient copies of the target region for visualization and comparison of the genetic sequences obtained from each sample. If the DNA sequences of the questioned and reference samples differ, this is normally sufficient for the questioned DNA to be excluded as having come from the same source. If the sequences are identical, statistical analysis is necessary to determine the probability that the match is a consequence of the questioned sequence coming from the same individual who provided the reference sample or from a randomly occurring individual in the general population. Match probabilities that are currently achievable are frequently greater than 1 in 1 billion, allowing identity to be assigned with considerable confidence in many cases

    Heat treatment following surface silanization in rebonded tribochemical silica-coated ceramic brackets: shear bond strength analysis

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    OBJECTIVE: This study aimed to evaluate the effects of heat treatment on the tribochemical silica coating and silane surface conditioning and the bond strength of rebonded alumina monocrystalline brackets. MATERIAL AND METHODS: Sixty alumina monocrystalline brackets were randomly divided according to adhesive base surface treatments (n=20): Gc, no treatment (control); Gt, tribochemical silica coating + silane application; Gh, as per Gt + post-heat treatment (air flux at 100ºC for 60 s). Brackets were bonded to the enamel premolars surface with a light-polymerized resin and stored in distilled water at 37ºC for 100 days. Additionally, half the specimens of each group were thermocycled (6,000 cycles between 5-55ºC) (TC). The specimens were submitted to the shear bond strength (SBS) test using a universal testing machine (1 mm/min). Failure mode was assessed using optical and scanning electron microscopy (SEM), together with the surface roughness (Ra) of the resin cement in the bracket using interference microscopy (IM). 2-way ANOVA and the Tukey test were used to compare the data (p>0.05). RESULTS: The strategies used to treat the bracket surface had an effect on the SBS results (p=0.0), but thermocycling did not (p=0.6974). Considering the SBS results (MPa), Gh-TC and Gc showed the highest values (27.59±6.4 and 27.18±2.9) and Gt-TC showed the lowest (8.45±6.7). For the Ra parameter, ANOVA revealed that the aging method had an effect (p=0.0157) but the surface treatments did not (p=0.458). For the thermocycled and non-thermocycled groups, Ra (µm) was 0.69±0.16 and 1.12±0.52, respectively. The most frequent failure mode exhibited was mixed failure involving the enamel-resin-bracket interfaces. CONCLUSION: Regardless of the aging method, Gh promoted similar SBS results to Gc, suggesting that rebonded ceramic brackets are a more effective strategy

    Systematic review of methods used in meta-analyses where a primary outcome is an adverse or unintended event

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    addresses: Peninsula College of Medicine and Dentistry, St Luke's Campus, University of Exeter, Exeter, UK. [email protected]: PMCID: PMC3528446types: Journal Article; Research Support, Non-U.S. Gov't© 2012 Warren et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Adverse consequences of medical interventions are a source of concern, but clinical trials may lack power to detect elevated rates of such events, while observational studies have inherent limitations. Meta-analysis allows the combination of individual studies, which can increase power and provide stronger evidence relating to adverse events. However, meta-analysis of adverse events has associated methodological challenges. The aim of this study was to systematically identify and review the methodology used in meta-analyses where a primary outcome is an adverse or unintended event, following a therapeutic intervention
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