Biomedical subjects

N Elliot

Publications and source records attributed to N Elliot.

6 recordsLinked to original sources

PubMed1999

Knowledge, attitudes and behaviour towards HIV infection among family planning clinic attendees: changes between 1991 and 1997.

AIM: To detect changes in knowledge, attitudes and behaviour towards HIV infection amongst Family Planning Clinic attendees in Christchurch, New Zealand, between 1991 and 1997. METHODS: A voluntary, anonymous, self-administered questionnaire was applied to consecutive subjects attending the Montreal Centre of the Family Planning Association in Christchurch, in 1991 and repeated in 1997. Results were compared to assess changes in demographic features, knowledge, attitudes and behaviour pertaining to HIV infection between these times. RESULTS: A 99% response rate was obtained in 1991 and 98% in 1997. Two hundred people in 1991 and 353 people in 1997 responded. These predominantly female heterosexual groups were demographically similar. Levels of knowledge pertaining to HIV infection were high and did not change significantly between 1991 and 1997, except for a rise in the proportion who felt donating blood was a high risk behaviour from 12.0% to 25.7% (p<0.001). HIV testing and discussion about HIV testing amongst couples was more common in 1997. However, the use of recreational intravenous drugs rose from 5.0% to 10.6% (p=0.025), condom use with every new partner fell from 65.1% to 42.1% (p=0.001) and the perceived risk of acquiring HIV in New Zealand and several Western Hemisphere countries fell, with 40.0% perceiving the South Island as a high-risk place in 1991 to 24.1% in 1997(p<0.001). This was paralleled by an apparent rise in known HIV testing. CONCLUSIONS: This predominantly heterosexual population appears to have maintained good levels of knowledge about HIV infection. However, this does not seem to be being translated into safer behaviour. This study detects alarming changes in behaviour in the face of adequate knowledge levels and increased testing for HIV which may provide pathways for entry of HIV into, and transmission within, the heterosexual population of New Zealand. Several aims of the New Zealand Strategy on HIV/AIDS 1990 need to be revisited in light of the evidence and resources directed appropriately.

Adolescent↗

PubMed1997

Physiological aspects of a vocal exercise.

The physiological aim of vocal exercises is mostly understood in intuitive terms only. This article presents an attempt to document the phonatory behavior induced by a vocal exercise. An elevated vertical position of the larynx is frequently associated with hyperfunctional phonatory habits, presumably because it induces an exaggerated vocal fold adduction. Using the multichannel electroglottograph (MEGG), the laryngeal position was determined in a group of subjects who performed a voice exercise that contained extremely prolonged versions of the consonant/b:/. This exercise is used by the coauthor (N.E.) as part of a standard vocal exercise program. Two of the seven subjects were dysphonic phonastenic patients, and the rest were normal trained or untrained persons. Different attempts to calibrate the MEGG confirmed a linear relationship with larynx height, provided electrode positioning was correct. The results showed that the exercise induced substantial vertical displacements of the larynx. Comparison with larynx height during voicing of other consonants showed that the/b/, in particular, tended to lower the larynx.

Humans↗

PubMed1995

What happens during vocal warm-up?

Most singers prefer to warm up their voices before performing. Although the subjective effect is often considerable, the underlying physiological effects are largely unknown. Because warm-up tends to increase blood flow in muscles, it seems likely that vocal warm-up might induce decreased viscosity in the vocal folds. According to the theory of vocal-fold vibration, such a decrease should lead to a lower phonation threshold pressure. In this investigation the effect of vocal warm-up on the phonation threshold pressure was examined in a group of male and female singers. The effect varied considerably between subjects, presumably because the vocal-fold viscosity was not a dominating factor for the phonation-threshold pressure.

Adult↗

PubMed1993

Short-term variation of subglottal pressure for expressive purposes in singing and stage speech: a preliminary investigation.

According to previous investigations, subglottal pressure in singing is adapted not only to loudness but also to fundamental frequency. Here the significance of musical expression to subglottal pressure is analyzed in terms of alternations between stressed and unstressed bar positions. Esophageal pressure was recorded together with the audio signal in a male and a female professional singer using a paranasally introduced pressure transducer while the subjects performed vocal exercises. Also, the subjects gave examples of actors' speech by reading poetry aloud. The results show that subglottal pressure can be used for stressing the first beat in bars and also for increasing the sound level in voiced consonants in actor's speech.

Air Pressure↗

PubMed1988

Antibodies to HTLV-I in populations of the southwestern Pacific.

Sera collected from 1,102 individuals in 14 populations of the southwestern Pacific between 1956 and 1979 were tested by ELISA for antibodies to human T-cell leukemia virus type I (HTLV-I). Selected sera were also tested by particle agglutination and immunoblotting. Six of the populations had prevalences of antibodies greater than 4%, two populations had prevalences greater than 15%. Six populations had antibody prevalences of 2% or less. Three populations from the coast and northern islands of New Guinea had high prevalences of antibodies, while three New Guinea highland groups had virtually none. One population from the Solomon Islands had a high prevalence, while two others had very low prevalences. Two populations from small remote islands in Vanuatu both had high prevalences. Pacific sera did not neutralize a standard strain of virus readily neutralized by Japanese, European, and American sera. We conclude that infections with HTLV-I, some acquired more than 20 years ago, are widespread throughout the southwestern Pacific, even in several very isolated populations, although others have been spared. Some strains of HTLV-I in populations of the Pacific may have substantially different envelope proteins from prototype strains of America, Europe, and Japan.

Adolescent↗

PubMedDate not supplied

Partnerships in higher education: a model for joint degree nursing programs.

The purpose of this article is to outline specific strategies that were employed in the design and implementation of two joint baccalaureate nursing programs developed in New Jersey. Details regarding the academic contract, decision-making committees, advisory committees, lines of authority, and practical aspects of operational management are fully described. The authors also describe the broad assumptions and ingredients necessary to successful partnerships in higher education. Both the advantages and disadvantages to academic partnerships are discussed.

Curriculum↗