1,355 research outputs found
The spectroscopic detection of drugs of abuse in fingerprints after development with powders and recovery with adhesive lifters
The application of powders to fingerprints has long been established as an effective and reliable method
for developing latent fingerprints. Fingerprints developed in situ at a crime scene routinely undergo lifting
with specialist tapes and are then stored in evidence bags to allow secure transit and also to preserve the
chain of evidence. In a previous study we have shown that exogenous material within a fingerprint can
be detected using Raman spectroscopy following development with powders and lifting with adhesive
tapes. Other reports have detailed the use of Raman spectroscopy to the detection of drugs of abuse
in latent fingerprints including cyanoacrylate-fumed fingerprints. This study involves the application of
Raman spectroscopy for the analysis of drugs of abuse in latent fingerprints for fingerprints that had
been treated with powders and also subsequently lifted with adhesive tapes. Samples of seized ecstasy,
cocaine, ketamine and amphetamine were supplied by East Sussex Police and by the TICTAC unit at St.
Georges Hospital Tooting. Contaminated fingerprintswere deposited on clean glass slides. The application
of aluminium or iron based powders to contaminated fingerprints did not interfere with theRamanspectra
obtained for the contaminants. Contaminated fingerprints developed with powders and then lifted with
lifting tapes were also examined. The combination of these two techniques did not interfere with the
successful analysis. The lifting processwas repeated using hinge lifters. As the hinge lifters exhibited strong
Raman bands the spectroscopic analysiswas more complex and an increase in the number of exposures to
the detector allowed for improved clarification. Spectral subtraction was performed to remove peaks due
to the hinge lifters using OMNIC software. Raman spectra of developed and lifted fingerprints recorded
through evidence bags were obtained and it was found that the detection process was not compromised.
Although the application of powders did not interfere with the detection process the time taken to locate
the contaminant was increased due to the physical presence of more material within the fingerprint
The cushion region and dayside magnetodisc structure at Saturn
A sustained dipolar magnetic field between the current sheet outer edge and the magnetopause, known as a cushion region, has yet to be observed at Saturn. Whilst some signatures of reconnection occurring in the dayside magnetodisc have been identified, the presence of this large-scale structure has not been seen. Using the complete Cassini magnetometer data, the first evidence of a cushion region forming at Saturn is shown. Only five potential examples of a sustained cushion are found, revealing this phenomenon to be rare. This feature more commonly occurs at dusk compared to dawn, where it is found at Jupiter. It is suggested that due to greater heating and expansion of the field through the afternoon sector the disc is more unstable in this region. We show that magnetodisc breakdown is more likely to occur within the magnetosphere of Jupiter compared to Saturn
Irish Kelt Tagging Experiments
Since the beginning of the century large numbers of salmon kelts have been tagged in Irish waters and the results have been given in a series of papers...a considerable number of kelts have been tagged since 1962 at a number of stations in Ireland and they form the basis of this paper
The Zoogeography of Some Fishes in Irish Waters
Some thirty years ago the then Fisheries Branch of the Department of Agriculture decided to give rewards for specimens of rare or interesting species of fish sent for examination. This, coupled with the enlightened attitude of Irish fishermen to their catches in recent years, has provided valuable information about the rarer species of fishes found in Irish waters. Even so information is still lacking on many species because normal fishing methods are not really geared to their capture. This is so with many of the smaller members of the fish fauna, and, particularly, those which live in rocky areas where normal fishing is not practised. The advent of skin-diving, however, is likely to improve knowledge of many such species, so that in the near future it may be necessary to revise drastically current views as to the abundance and distribution of many such species of fishes known to frequent Irish waters
"Specimen" Brown Trout and Sea Trout From Irish Waters
The present paper deals with all the material collected up to the end of the 1967 fishing season and relates to brown trout of 10 lb weight and upwards and sea trout of 6 lb and upwards
Review of the Irish Salmon Industry
For centuries the salmon has been an important item of commerce in Ireland and in many parts of the country today it is still very important in the general economy of the people, who gain a living directly or indirectly from it. It is important from two points of view. It provides sport for the angler and it supports a commercial fishery.
There are three other articles in this issue: II. SALMON OF THE RIVER SHANNON (1957 to 1962) - Eileen Twomey; III. THE EFFECTS OF ARTERIAL DRAINAGE WORKS ON THE SALMON STOCK OF A TRIBUTORY OF THE RIVER MOY - E.D. Toner, Ann O’Riordan & Eileen Twomey; IV. RECAPTURES OF IRISH TAGGED SALMON OFF GREENLAND - A.E.J. Went
The Distribution of Irish Char (Salvelinus Alpinus)
Char* (Salvelinus alpinus) are rare in most places in Ireland to-day but they were formerly more widespread
and abundant. About twenty-five years ago the Fisheries Division of the Department of Agriculture and
Fisheries started to offer rewards for char submitted for examination and this has had the result of providing
specimens which would otherwise have been lost. Many of these specimens wcre taken on rod and line but in
recent years considerable numbers have been obtained in connection with either the improvement schemes of the
Inland Fisheries Trust, Inc. or investigations concerned with the effects of drainage operations on Lough Conn
Science and Fisheries Management
The W.J.N. Menzies Memorial Lecture delivered at the Annual Course of the Institute of Fisheries Management at the University of East Anglia, Norwich, on 16 September, 1975
Sea trout of the River Argideen
A small collection of material consisting of scales and relevant information collected in 1964/5 from sea trout of the Argideen Rive in County Cork was examined and the results compared with those obtained in the years 1954/5
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