Showing papers in "Science & Justice in 1995"

TL;DR: This note is a discussion of the problem which the forensic scientist faces, particularly when at court, of avoiding making probability statements which are logically incorrect.

TL;DR: Methods are described for the HPLC and genetic analysis of herbal Cannabis sativa and the use of the RAPD technique enables differentiation between samples that cannot be differentiated by HPLC analysis alone.

TL;DR: The results do not generally support the hypothesis that serious offenders have progressed from less serious offences against children, and a criminal opportunist model is proposed as of more value for guiding investigations than the existing stereotypes.

TL;DR: Nine forensic autopsy cases were studied, and intraventricular haemorrhage, probably due to tears of the choroid plexus caused by hyperextension or hyperflexion of the head, was found in seven cases.

TL;DR: The stability of temazepam in blood under different storage temperatures was studied to assist the forensic toxicologist with the interpretation of results, particularly in cases where analysis has been delayed.

TL;DR: The various factors contributing to scuba diving deaths are presented and how to conduct such investigations are suggested.

TL;DR: No statistically significant relationship was found between speech tempo, loudness and voice fundamental frequency, and therefore no correction or normalising procedure need be applied prior to the assessment or interpretation of fundamental frequency means.

TL;DR: Support is provided for the validity of the HLA-DQ alpha procedure for typing forensic samples and the distribution of the observed genotypes was in Hardy-Weinberg equilibrium.

TL;DR: The excreted paranitrophenol was equivalent to 76 mg parathion (lethal dose in humans between 20 and 100 mg) and no changes in the concentrations of paranitophenol or its conjugates were seen in the urine on storage, frozen over a one year period.

TL;DR: A survey of dye batch variation in samples of mass produced textile fibres was carried out on material from textile manufacturers, socks from a national retail chain, and samples from 100 police uniforms obtained from the Tayside Police Force using TLC analysis as discussed by the authors.

TL;DR: In this article, an earlier study on the sequence of ESDA impressions and ballpoint pen inkstrokes has been extended to cover the determination of sequence of ballpoint writing impressions as detected by ESDA and inks from fibre tip, porous tip and rollerball pens.

TL;DR: In view of the respiratory physiology, there does not appear to be any measurable depletion of breath alcohol concentration due to sampling intervals as short as one minute.

TL;DR: In this paper, the residual petroleum hydrocarbons (aromatics) were converted into their corresponding phenolslnaphthols, which were further detected by thin-layer chromatographylhigh performance thin layer chromatography by visualizing the plates under UV light before spraying, and in daylight after spraying with diazotized p-nitroaniline reagent followed by aqueous ethanolic sodium hydroxide solution.

TL;DR: Overall, ONLINE approximately matched RIA and exceeded EMIT in most characteristics tested, showing potential for ONLINE as a fully automated urine opiates immunoassay.

TL;DR: The concept of an education program for forensic practitioners in criminalistics, run in conjunction with an external educational provider for the Australian Federal Police, is examined, and the need, level of qualification and length of the program are discussed.

TL;DR: A system of classification based on letter construction and inter-letter connections was developed to assess the degree of similarity between the signatures and showed that the majority of signatures were readily distinguishable from each other.

TL;DR: Several diazonium salts and thin layer chromatographic (TLC) solvent systems were evaluated for the characterization of amphetamines and other basic and non-basic drugs and found to give reproducible Rf data for these drugs.

TL;DR: In this paper, the statistical evidence which played a major part in a case of arson in Norway is presented as a case study, where a fireman was known to have been present at the scenes of fire in the hours prior to their onset in no less than 24 out of 37 cases of forest fire.