Acute stagnant air syndrome

In the spring of 1979, two water company employees were found dead at the bottom of a water-filled underground meter vault. A month-long investigation disclosed that the atmosphere of the vault had progressively been deteriorated by the growth of primitive plants present in the water and also on the walls and ceiling of the vault. When entering manholes, employees must adhere strictly to all safety rules, such as the testing of the air before entry, ventilation of the air spaces, and the presence of a standby rescue worker. The diagnosis of acute stagnant air syndrome for this type of accident is introduced herein, to alert industrial concerns and the medical professions about the existence of this occupational hazard confronting individuals who work in confined and poorly ventilated manholes.     

Human identification and sex determination of dental pulp, bone marrow and blood stains with a recombinant DNA probe

Recombinant DNA hybridizing specifically to a 300 nucleotide repeat DNA sequence (BLUR8) of human specificity and to human repeat DNA sequence (pHY10) on the Y chromosome was used for human identification and sex determination of degraded DNA samples of blood stains, dental pulp, and bone marrow. This radioactive technique enabled reliable and sensitive human and sex determination from blood stains that were more than 80 years old. Less than 1 piece of 0.5 cm length thread of blood stain was enough for both tests. DNA from relatively fresh dental pulp and bone marrow was clearly identified. The human identification test, which could recognize up to 0.3 ng DNA correctly, was 3 to 5 times more sensitive than the sex determination test.     

Differences in the intracranial pressure caused by a 'blow' and/or a 'fall'--an experimental study using physical models of the head and neck

In cases of a severe head injury caused by a fall, coup contusions are either absent or very minor, in contrast to presence of extensive contre-coup damage. In cases of a severe blow to head, however, the reverse occurs, with contre-coup lesions a rarity and coup damage extensive. To investigate this further, head injuries caused by a 'blow' or a 'fall' have been studied, using physical human models of the head and neck, both filled with distilled, degassed water and fixed onto a dummy torso. An impact of a constant magnitude was applied to the midoccipital region in 'blow' and 'fall' experiments, and the acceleration of the head and changes in the intracranial pressure were measured, with the resulting data analyzed by a computer. In both experiments, the peak amplitude of the acceleration pulse were almost the same. Similarly, the intracranial pressure curve at the impact site consisted of a positive pulse that hardly differed, nor did the peak amplitude of that pulse vary significantly. In the 'blow' experiment, however, the intracranial pressure curve at the site opposite the impact consisted of a negative pulse, whereas in the 'fall' experiment, the intracranial pressure recorded at the same area was negative but of a longer duration, with an absolute value that was slightly greater. Our results indicate that an impact to the head triggers a different response in the intracranial space, dependent on whether that impact force was caused by a 'blow' or a 'fall'.     

Polymorphism of 17 STRs by multiplex analysis in Japanese population

Genotype and distribution of allele frequencies at 17 STRs were studied in 526 unrelated Japanese individuals using the PowerPlex 16 system and the AmpFlSTR Identifiler.     

Police officers’ attitudes toward their role and work: A comparison of black and white officers

This study tests whether Black and White police officers differ in job-related attitudes. The analyses focus on officers’ attitudes toward police role, selective enforcement, legal restrictions, and departmental problem-solving efforts. Survey data were collected from the Indianapolis Police Department (IPD) during the summer of 1996. Findings show that compared to White officers, Black officers tend to have a broad role orientation, be less selective, and have positive attitudes toward legal restrictions. Implications for future research and policy are also discussed.