Bloodstains at crime scenes are among the most important types of evidence for forensic investigators. They can be used for DNA-profiling for verifying the suspect's identity or for pattern analysis in order to reconstruct the crime. However, until now, using bloodstains to determine the time elapsed since the crime was committed is still not possible. From a criminalistic point of view, an accurate estimation of when the crime was committed enables to verify witnesses' statements, limits the number of suspects and assesses alibis. Despite several attempts and exploration of many technologies during a century, no method has been materialized into forensic practice. This review gives an overview of an extensive search in scientific literature of techniques that address the quest for age determination of bloodstains. We found that most techniques are complementary to each other, in short as well as long term age determination. Techniques are compared concerning their sensitivity for short and long term ageing of bloodstains and concerning their possible applicability to be used on a crime scene. In addition, experimental challenges like substrate variation, interdonor variation and environmental influences are addressed. Comparison of these techniques contributes to our knowledge of the physics and biochemistry in an ageing bloodstain. Further improvement and incorporation of environmental factors are necessary to enable age determination of bloodstains to be acceptable in court. 相似文献
The aim of this paper is to study the impact of remittances from labour migrants on welfare, as well as the impact of the use of equivalence scales on poverty, in Tajikistan. The magnitude of remittances sent back is fairly well known from official statistics (e.g. the amount of remittances is regularly monitored by the balance of payment at the Central Bank). In 2009 a change in the flow of money from abroad occurred, and volumes dropped, but it was unknown to what extent; its impact on poverty is still officially unknown. This paper describes a project aimed at conducting a survey to investigate this impact. It would not be possible to do this kind of analysis with a traditional sample survey, since it would generate only a small selection of migrant households. Instead, the new Migration, Remittances and Poverty Survey was used, which was conducted by the Tajik State Statistical Office in August 2010 using an adaptive sampling design from a set of enumeration areas selected mainly from the 2009 Integrated Household Budget Survey (IHBS) and showing households with remittances. To evaluate the impact of equivalence scales on poverty measures, new scales have been estimated on the basis of consumption expenditure from the 2009 IHBS. 相似文献
Amisulpride is a substituted benzamide used as an atypical antipsychotic drug. It antagonizes dopamine D2 and D3 receptor-mediated effects with greater affinity for the limbic system suggesting better neurological tolerance than classical neuroleptics. However, occasionally amisulpride intoxications associated with seizures, comatose conditions and agitation, hyperthermia, tachycardia, prolongation of the QT interval and extrapyramidal features have been described. A 27-year-old female with a medical history of psychosis and amisulpride therapy was found dead at home. By means of high performance liquid chromatography coupled with mass spectrometry (LC/MS) an amisulpride concentration of 13.4 mg/l was found in the peripheral blood. A lower concentration in the brain and an extremely high concentration in bile can be explained by the polarity and hydrophobic character of the substance. After macroscopic and histological exclusion of other causes of death the results of the toxicological analysis were consistent with the assumption of a fatal amisulpride overdose. 相似文献
In the USA the frequency of witnessed suicide, i.e. suicide committed in the presence of at least one further individual, is reported to range between 5 and 15%. As up to now no detailed analysis of this special issue has been given in the medicolegal literature, this article presents and discusses a number of cases including 8 males and 1 female (age 19-58 years, mean 41.2 years) who had all committed suicide by inflicting a gunshot to the head. In 3 cases post-mortem blood alcohol concentrations of 1.73, 1.88 and 2.23 g/kg respectively were observed. Toxicological tests produced negative results. 5 cases had a medical history of psychiatric disorder with endogenous depression in 3, chronic alcohol abuse and drug abuse with concomitant psychosis in one case each. As far as the motives were known, domestic arguments were of prevailing importance. With one exception the suicides were committed at home. In 6 cases one witness was present, in 2 cases 2 individuals and in one case 22 persons witnessed the suicide. The reported cases are discussed in comparison with the psychiatric-psychological classification according to McDowell et al. with the aim to provide a solid and comprehensive medicolegal method to distinguish between homicide and suicide. Furthermore aspects of psychiatric sequelae and psychological support of the witnesses, which are also of importance for the forensic pathologist called to the scene, are discussed. 相似文献
This paper investigates whether the large scale municipal amalgamations in the German state of Baden-Wuerttemberg in the early 1970s led to considerable common pool exploitation. Through amalgamation the resources of several municipalities are pooled together disclosing the former independent municipalities a larger source of funds. Additionally, the pooling also decreases the cost of local public goods, as those have to be borne by the whole of the amalgamated municipality. By exploiting the huge variance in the amalgamation process in terms of number of participating municipalities, but also in municipality size or amalgamation strategy, we identify considerable common pool effects. Amalgamated municipalities show considerably stronger acceleration in debt accumulation compared to non-amalgamating municipalities. This common pool exploitation is stronger if more municipalities participate and when municipalities amalgamate by annexation.