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Articles 1 - 16 of 16

Full-Text Articles in Social and Behavioral Sciences

Misattribution Of Sensory Input Reflected In Dysfunctional Target: Non-Target Erps In Schizophrenia, K. Brown, E. Gordon, L. Williams, H. Bahramali, A. Harris, J. Gray, C. J. Gonsalvez, R. Meares Nov 2000

Misattribution Of Sensory Input Reflected In Dysfunctional Target: Non-Target Erps In Schizophrenia, K. Brown, E. Gordon, L. Williams, H. Bahramali, A. Harris, J. Gray, C. J. Gonsalvez, R. Meares

Faculty of Health and Behavioural Sciences - Papers (Archive)

Background. While numerous studies have found disturbances in the Event-Related Potentials (ERPs) of patients with schizophrenia linked to task relevant target stimuli (most notably a reduction in P300 amplitude), few have examined ERPs to task irrelevant non-targets. We hypothesize, from current models of dysfunction in information processing in schizophrenia, that there will be less difference between ERPs to targets and non-targets in patients with schizophrenia than in controls.

Methods. EEGs were recorded for 40 subjects with schizophrenia and 40 age and sex matched controls during an auditory oddball reaction time task. ERPs to the targets and non-targets immediately preceding the ...


Clusterin Is A Secreted Mammalian Chaperone, M. R. Wilson, S. B. Easterbrook-Smith Jan 2000

Clusterin Is A Secreted Mammalian Chaperone, M. R. Wilson, S. B. Easterbrook-Smith

Faculty of Science - Papers (Archive)

[Extract] By any criteria, clusterin is an interesting protein. It was first described in 1983 as a secreted glycoprotein in ram rete testis fluid that enhanced aggregation (“clustering”) of a variety of cells in vitro 1. Many homologues in other species were subsequently discovered. Typically, each “discovery” of clusterin in a different species or by a different research group led to it being assigned another name. By the early 1990s clusterin was known under many aliases 2, some of which persist in the literature. However, the inaugural international workshop on clusterin (Cambridge, 1992) agreed to the name clusterin, in deference ...


Contribution To The Theory Of Scarpland Development From Observations In Central Queensland, Australia, R. W. Young, R. A. Wray Jan 2000

Contribution To The Theory Of Scarpland Development From Observations In Central Queensland, Australia, R. W. Young, R. A. Wray

Faculty of Science - Papers (Archive)

Theories of scarpland geomorphology developed over the past century have been characterised by divergent conceptual frameworks and have been hindered by language barriers. Here, we review the main theories and assess them with reference to field evidence from central Queensland, Australia.


Thyroid Hormones And Their Effects: A New Perspective, A. J. Hulbert Jan 2000

Thyroid Hormones And Their Effects: A New Perspective, A. J. Hulbert

Faculty of Science - Papers (Archive)

The thyroid hormones are very hydrophobic and those that exhibit biological activity are 3',5',3,5-ltetraiodothyronine (T4), 3',5,3-l-triiodothyronine (T3), 3',5',3-l-triiodothyronine (rT3) and 3,5,-ldiiodothyronine (3,5-T2). At physiological pH, dissociation of the phenolic -OH group of these iodothyronines is an important determinant of their physical chemistry that impacts on their biological effects. When non-ionized these iodothyronines are strongly amphipathic. It is proposed that iodothyronines are normal constituents of biological membranes in vertebrates. In plasma of adult vertebrates, unbound T4 and T3 are regulated in the picomolar range whilst protein-bound T4 and T3 are maintained ...


Desiccation Tolerance Of Three Moss Species From Continental Antarctica, Sharon A. Robinson, J. Wasley, M. Popp, C. E. Lovelock Jan 2000

Desiccation Tolerance Of Three Moss Species From Continental Antarctica, Sharon A. Robinson, J. Wasley, M. Popp, C. E. Lovelock

Faculty of Science - Papers (Archive)

Tolerance of desiccation was examined in three species of moss, Grimmia antarctici Card., Ceratodon purpureus (Hedw.) Brid. and Bryum pseudotriquetrum (Hedw.) Gaertn., Meyer et Scherb. collected from two sites of contrasting water availability in the Windmill Islands, continental Antarctica. Physiological tolerance to desiccation was measured using chlorophyll fluorescence in plugs of moss during natural drying in the laboratory. Differences in relative water contents, rates of drying and the response of photosynthesis to desiccation were observed among the three species and between sites. Of the three species studied, G. antarctici showed the lowest capacity to sustain photosynthetic processes during desiccation, B ...


Tracing Beach Sand Provenance And Transport Using Foraminifera: Preliminary Examples From Northwest Europe And Southeast Australia, S. K. Haslett, Edward A. Bryant, R. H. Curr Jan 2000

Tracing Beach Sand Provenance And Transport Using Foraminifera: Preliminary Examples From Northwest Europe And Southeast Australia, S. K. Haslett, Edward A. Bryant, R. H. Curr

Faculty of Science - Papers (Archive)

Foraminifera are marine Sarcodine Protozoa that possess tests (shells) that are preservable in the fossil record. These tests may either be constructed using organically cemented detritus (agglutinating or arenaceous forms), or secreted using calcium carbonate (calcareous forms). Their ecology embraces planktonic and benthonic modes, although planktonic forms generally inhabit the open ocean and seldom live in coastal waters in any abundance, while benthonic foraminifera exist on substrates from abyssal plains to high intertidal areas. There are many species of foraminifera that are niche-specific, making them ideal for palaeoenvironmental analysis (Boersma, 1978; Brasier, 1980; Murray, 1991; Culver, 1993).


Deconstructing The Interaction Of Glu-Plasminogen With Its Receptor A-Enolase, N M. Andronicos, M S. Baker, M Lackmann, M Ranson Jan 2000

Deconstructing The Interaction Of Glu-Plasminogen With Its Receptor A-Enolase, N M. Andronicos, M S. Baker, M Lackmann, M Ranson

Faculty of Science - Papers (Archive)

No abstract provided.


Thermoregulation By Kangaroos From Mesic And Arid Habitats: Influence Of Temperature On Routes Of Heat Loss In Eastern Grey Kangaroos (Macropus Giganteus) And Red Kangaroos (Macropus Rufus), Terence J. Dawson, Cyntina E. Blaney, Adam J. Munn, Andrew Krockenberger, Shane K. Maloney Jan 2000

Thermoregulation By Kangaroos From Mesic And Arid Habitats: Influence Of Temperature On Routes Of Heat Loss In Eastern Grey Kangaroos (Macropus Giganteus) And Red Kangaroos (Macropus Rufus), Terence J. Dawson, Cyntina E. Blaney, Adam J. Munn, Andrew Krockenberger, Shane K. Maloney

Faculty of Science - Papers (Archive)

We examined thermoregulation in red kangaroos (Macropus rufus) from deserts and in eastern grey kangaroos (Macropus giganteus) from mesic forests/woodlands. Desert kangaroos have complex evaporative heat loss mechanisms, but the relative importance of these mechanisms is unclear. Little is known of the abilities of grey kangaroos. Our detailed study of these kangaroos' thermoregulatory responses at air temperatures (T-a) From -5 degrees to 45 degrees C showed that, while some differences occur, their abilities are fundamentally similar. Both species show the basic marsupial characteristics of relatively low basal metabolism and body temperature (T-b). Within the thermoneutral zone, T-b was 36 ...


Ventilatory Accommodation Of Oxygen Demand And Respiratory Water Loss In Kangaroos From Mesic And Arid Environments, The Eastern Grey Kangaroo (Macropus Giganteus) And The Red Kangaroo (Macropus Rufus), Terence J. Dawson, Adam J. Munn, Cyntina E. Blaney, Andrew Krockenberger, Shane K. Maloney Jan 2000

Ventilatory Accommodation Of Oxygen Demand And Respiratory Water Loss In Kangaroos From Mesic And Arid Environments, The Eastern Grey Kangaroo (Macropus Giganteus) And The Red Kangaroo (Macropus Rufus), Terence J. Dawson, Adam J. Munn, Cyntina E. Blaney, Andrew Krockenberger, Shane K. Maloney

Faculty of Science - Papers (Archive)

We studied ventilation in kangaroos from mesic and arid environments, the eastern grey kangaroo (Macropus giganteus) and the red kangaroo (Macropus rufus), respectively, within the range of ambient temperatures (T-a) from -5 degrees to 45 degrees C. At thermoneutral temperatures (T-a = 25 degrees C), there were no differences between the species in respiratory frequency, tidal volume, total ventilation, or oxygen extraction. The ventilatory patterns of the kangaroos were markedly different from those predicted from the allometric equation derived for placentals. The kangaroos had low respiratory frequencies and higher tidal volumes, even when adjustment was made for their lower basal metabolism ...


Enhanced Tumor Growth In Uv-Irradiated Skin Is Associated With An Influx Of Inflammatory Cells Into The Epidermis, Ronald Sluyter, Gary M. Halliday Jan 2000

Enhanced Tumor Growth In Uv-Irradiated Skin Is Associated With An Influx Of Inflammatory Cells Into The Epidermis, Ronald Sluyter, Gary M. Halliday

Faculty of Science - Papers (Archive)

UV radiation causes a number of cellular changes within the skin which play a role in tumor outgrowth, including immunosuppression and production of growth-enhancing cytokines, Both of these enable tumors to grow but their relative importance in carcinogenesis is poorly defined. In this study, C3H/HeN mice were exposed to a single inflammatory dose of 410 mJ/cm(2) UVB radiation (plus 100 mJ/cm2 UVA radiation) followed by the inoculation of a regressor squamous cell carcinoma into or the painting of oxazolone onto the treated skin. Tumors transplanted 2 or 3 but not 4 days after irradiation had a ...


The Decline Of Ethics Or The Failure Of Self-Regulation? The Case Of Alcohol Advertising, Sandra C. Jones Jan 2000

The Decline Of Ethics Or The Failure Of Self-Regulation? The Case Of Alcohol Advertising, Sandra C. Jones

Faculty of Health and Behavioural Sciences - Papers (Archive)

Restrictions on alcohol advertising have increasingly become an issue for debate around the world. Some countries rely on governmental regulation; whereas others, including Australia, utilise a system of industry selfregulation. This study calls into question the effectiveness of the alcohol beverage industry’s self-regulation of advertising. Between May 1998 and April 1999, 11 alcohol advertising complaints (relating to nine separate advertisements) were lodged with the Advertising Standards Board (ASB) by members of the general public. In the present study, five expert judges were selected to review these complaints, without knowing the ASB’s rulings, and to judge whether the advertisement ...


Use Of Self-Report To Monitor Overweight And Obesity In Populations: Some Issues For Consideration, Victoria M. Flood, Karen Webb, Ross Lazarus, Glen Pang Jan 2000

Use Of Self-Report To Monitor Overweight And Obesity In Populations: Some Issues For Consideration, Victoria M. Flood, Karen Webb, Ross Lazarus, Glen Pang

Faculty of Health and Behavioural Sciences - Papers (Archive)

Objective: To examine the validity of self reported height and weight data reported over the telephone in the 1997 NSW Health Survey, and to determine its accuracy to monitor overweight and obesity in population surveys. Method: Self-reported and measured heights and weights were collected from 227 people living in Western Sydney, who had participated in the NSW Health Survey 1997. Results: Self-reported (SR) weights and heights led to misclassification of relative weight status. BMI, based on measured weights and heights, classified 62% of males and 47% of females as overweight or obese, compared with 39% and 32%, respectively, from self-report ...


Diet Composition And Insulin Action In Animal Models, Leonard H. Storlien, J Higgins, T C. Thomas, Marc A. Brown, Hong-Qin Wang, Xu-Feng Huang, Paul Else Jan 2000

Diet Composition And Insulin Action In Animal Models, Leonard H. Storlien, J Higgins, T C. Thomas, Marc A. Brown, Hong-Qin Wang, Xu-Feng Huang, Paul Else

Faculty of Health and Behavioural Sciences - Papers (Archive)

No abstract provided.


Evaluation Of The Helping Hands Volunteer Program For People With Mental Illness, Judy A. Pickard, Frank P. Deane Jan 2000

Evaluation Of The Helping Hands Volunteer Program For People With Mental Illness, Judy A. Pickard, Frank P. Deane

Faculty of Health and Behavioural Sciences - Papers (Archive)

Volunteer programs have been used to alter attitudes, provide long-term knowledge towards mental illness and increase the quality of life of consumers receiving volunteer services. Sixteen volunteers completed an 18-hour training program and in pairs worked with 11 consumers over 4 months. Sixteen volunteers completed training measures of knowledge and attitudes scales. Pre and post program quality of life and behavioural functioning measures were taken on 5 consumers. Volunteers maintained their knowledge of mental illness over 6 months and had significant increases in their comfort in interactions with people who have mental illness. Case managers, consumers and volunteers all reported ...


Global-Perspective Jitter Improves Vection In Central Vision, Stephen A. Palmisano, Barbara Gillam, Shane Blackburn Jan 2000

Global-Perspective Jitter Improves Vection In Central Vision, Stephen A. Palmisano, Barbara Gillam, Shane Blackburn

Faculty of Health and Behavioural Sciences - Papers (Archive)

Previous vection research has tended to minimise visual - vestibular conflict by using optic-flow patterns which simulate self-motions of constant velocity. Here, experiments are reported on the effect of adding 'global-perspective jitter' to these displays -- simulating forward motion of the observer on a platform oscillating in horizontal and/or vertical dimensions. Unlike non-jittering displays, jittering displays produced a situation of sustained visual - vestibular conflict. Contrary to the prevailing notion that visual - vestibular conflict impairs vection, jittering optic flow was found to produce shorter vection onsets and longer vection durations than non-jittering optic flow for all of jitter magnitudes and temporal frequencies ...


Book Review: The Nation's Diet: The Social Science Of Food Choice, Linda C. Tapsell Jan 2000

Book Review: The Nation's Diet: The Social Science Of Food Choice, Linda C. Tapsell

Faculty of Health and Behavioural Sciences - Papers (Archive)

No abstract provided.