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Biomedical subjects

S A Edwards

Publications and source records attributed to S A Edwards.

62 records · Page 4Linked to original sources
PubMedDate not supplied

Behaviour of groups of weaner pigs in three different housing systems.

Behavioural observations were made on 150 3-week weaned pigs housed in pens with fully perforated floors, or a solid-floored lying area with or without straw. Observations were made during a period of high ambient temperatures and during cool weather. At high ambient temperatures pigs with part-solid floors defaecated and urinated in the lying area and showed a higher (P less than 0.01) incidence of rooting behaviour associated with wallowing. Pigs on fully perforated floors showed reduced levels of activity in hot conditions (P less than 0.01). Pigs given straw were more active (P less than 0.01) and spent 25% of active behaviour in straw directed behaviour. There was a higher incidence (P less than 0.01) of oral behaviour directed at penmates and pen fittings amongst pigs housed on fully perforated floors.

Animals↗
PubMedDate not supplied

Modelling the VUV emission spectrum of N2: preliminary results on the effects of rotational interactions on line intensities.

A theoretical model of the excited singlet ungerade electronic states of the nitrogen molecule is presented. This work is an extension of a previous study (D. Stahel, M. Leoni and K. Dressler, J. Chem. Phys. 79, 2541-2558, 1983) with the addition of rotational interactions between states of different symmetry. These rotational interactions together with the homogeneous couplings frequently lead to extreme mixing of the states. This model is being used to analyse the high resolution vacuum ultraviolet emission spectrum which is currently being recorded photoelectrically. The ultimate goal of this work is the reliable interpretation of the low resolution emission spectra observed from planetary atmospheres, notably that of Titan, and the transitions assigned as being important in the Voyager 1 spectra of Titan are discussed in detail.

Atmosphere↗
PubMedDate not supplied

Inner city gunshot wounds.

A retrospective survey was undertaken to establish the pattern and incidence of gunshot wounds seen at a South London hospital. Forty-two gunshot wounds were seen in 1993 and 1994. All the patients were under 39 years of age and 40 were male. All patients had low energy transfer injuries, having been shot with hand-guns (n = 36), seven of whom had multiple bullet or shotgun wounds (n = 6). Sixteen patients had head, neck or chest injuries, eight of whom died. Seven patients were wounded in the abdomen or pelvis and 31 had limb injuries. Thirty-six surviving patients had a total of 33 operations and a mean hospital stay of 7.65 days (range 0-105 days).

Abdominal Injuries↗
PubMedDate not supplied

The transcriptional factor Egr-1 is synthesized by baculovirus-infected insect cells in an active, DNA-binding form.

The Egr-1 (zfp-6) gene encodes a zinc-finger-containing nuclear protein that is rapidly and transiently induced in quiescent cells treated with mitogens. We have constructed baculovirus vectors that synthesize mouse Egr-1 protein initiating at two putative ATG start sites. The ATG site producing the larger protein (Mr, 80,000) is similar, if not identical, to Egr-1 synthesized by serum-stimulated quiescent mouse fibroblasts, thus identifying the likely site for translation. The protein synthesized by the insect cells is active as assayed by its ability to bind to a specific DNA sequence that has been identified as an Egr-1 binding site. The insect cell system will allow further studies of the structure and function of the Egr-1 product, a protein that appears to be an important "master switch" for other genes.

Animals↗