Performance evaluation of the Scent Transfer Unit (STU-100) for organic compound collection and release

The Scent Transfer Unit (STU-100) is a portable vacuum that uses airflow through a sterile gauze pad to capture a volatiles profile over evidentiary items for subsequent canine presentation to assist law enforcement personnel. This device was evaluated to determine its ability to trap and release organic compounds at ambient temperature under controlled laboratory conditions. Gas chromatography-mass spectrometry (GC-MS) analyses using a five-component volatiles mixture in methanol injected directly into a capture pad indicated that compound release could be detected initially and 3 days after the time of collection. Additionally, 15 compounds of a 39-component toxic organic gaseous mixture (10-1000 parts per billion by volume [p.p.b.(v)]) were trapped, released, and detected in the headspace of a volatiles capture pad after being exposed to this mixture using the STU-100 with analysis via GC-MS. Component release efficiencies at ambient temperature varied with the analyte; however, typical values of c. 10% were obtained. Desorption at elevated temperatures of reported human odor/scent chemicals and colognes trapped by the STU-100 pads was measured and indicated that the STU-100 has a significant trapping efficiency at ambient temperature. Multivariate statistical analysis of subsequent mass spectral patterns was also performed.     

Tetrahydrocannabinols in hair of hashish smokers

The study investigates the presence of tetrahydrocannabinols in the head hair and the pubic and axillary hair. The hair samples were obtained from hashish smokers. The concentrations were determined by radioimmunoassay and reflect total tetrahydrocannabinols and metabolites. The values found ranged from 0.4 ng/mg hair up to 3.8 ng/mg hair. The presence of the drug in the hair samples was also demonstrated by GC/MS.     

Mara Salvatrucha: The Most Dangerous Street Gang in the Americas?

Mara Salvatrucha (MS‐13), founded in 1980s Los Angeles by Salvadoran immigrant youth, is today one of the largest street gangs in North and Central America. In recent years the group has acquired a reputation for extreme brutality and has ostensibly mutated into a fast‐expanding, transnational organized crime network with possible ties to international terrorists. Drawing on key concepts in gang research and multiple methodological tools, this article seeks to sharpen understanding of MS‐13's structure and activities. While the group is active in many countries, it is transnational only in a symbolic manner, not in its configuration or span of authority. Impelled largely by Central American gang‐suppression policies, MS‐13 has evolved from a traditional street gang into a group with organized crime characteristics, but it remains a social phenomenon rooted in urban marginality. Ultimately, a more nuanced picture of Mara Salvatrucha can inform the search for more effective gang policies.     

Suicide by multiple blunt head traumatisation using a stone

Apart from collisions with road or rail vehicles and falls from height, self inflicted blunt force is a rare suicide method and mainly seen in psychiatric patients. The paper presents a rare case of suicide by active blunt force. A 68-year-old man committed suicide by repeatedly hitting his head with a stone. He sustained a craniocerebral trauma and finally died from hypothermia due to the low outdoor temperature. According to the relatives, the man was not diagnosed with a mental disorder or suicidal tendencies. Uncommon manners of self-harm are challenging for those involved in the investigation, and a differentiation between suicide, accident and homicide can only be made in synopsis of all findings.     

REHABILITATION OF DRUNK DRIVERS AND THE SMADIT PROJECT： COLLABORATION AMONG THE POLICE FORCE,THE ROAD ADMINISTRATION AND THE SOCIAL SERVICES

The aim of the SMADITt project is not only to reduce the number of drunk drivers on the Swedish roads but also to reduce the number of repeated drunk driving offences. The SMADIT project is a three-way collaboration between the Swedish Police Force, the Swedish Road Administration and the Swedish Social Services. According to the guidelines the police should inform the suspected drunk drivers about SMADIT and ask if they want to be contacted by the Social Services. If they agree to take part in the project, then a member of staff from the Social Services will contact them within 24 hours. The purpose of this paper is to present the results from a qualitative study evaluating the effects of SMADIT. Thirteen male drivers and one female driver who agreed to take part in the SMADIT project were interviewed. The questions covered their experience of SMADIT, why they agreed to participate, what kind of help they received but also their attitudes towards drinking and driving in general and the event leading up to the conviction. The results showed that the initial contact with the police determined if they would agree to participate in the project or not. Both written and verbal information were essential An important aim with SMADIT project is the early contact with the Social Service. However, the results from this study showed that several informants needed time for reflection and to recover from the shock after being stopped by the police on suspicion of drunk driving. However, according to informants, it was important that not too many days passed before a contact was established. During the meeting with the Social Service, the informants were then offered different kinds of treatment. All of the informants were very pleased with this contact. According to the guidelines provided by the SMADIT project a consensus has to be reached, otherwise the Social Services cannot contact the person. In this study, we found that a person straight after the event does not always think clearly and therefore we propose that the SM     

Juvenile Arrest and Later Economic Attainment: Strength and Mechanisms of the Relationship

Journal of Quantitative Criminology - We tested the impact of juvenile arrest on asset accumulation, debt accumulation, and net worth from ages 20–30. We also examined whether indicators of...