67 resultados para Man, Prehistoric

em Deakin Research Online - Australia


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At Corindi Beach on the mid-north coast of New South Wales are five twentieth century campsites located on the fringes of the township, beside the town racecourse, an area called by local Aboriginal people 'No man's land'. These campsites are important symbols of the self-sufficient lifestyle followed by the Corindi Beach Indigenous community in the twentieth century and are a physical reminder of cross-cultural relationships between local people over the last hundred years. In a collaborative research project with Yarrawarra Aboriginal Corporation, these places are being documented through studying oral history, the cultural landscape and the material culture left behind at these places.

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It is an accepted tenet of planning history that Australia's planning practice in the first half of the 20th century was dominated by experts delivering a package of international planning ideas. Is this story made more    complicated, however by the attitudes of the lay Australian to urban planning at this time? What role have the approaches of planners and planning  bodies played in advising the public of the best routes to take  towards comprehensive and appropriate planning? This paper discusses these  issues with use of examples of the general public's letters to  Melboume's Metropolitan Town Planning Commission (MTPC)( 1923-30) about planning issues in Melbourne; the MTPC's responses; and responsive propaganda generated by prominent Melbourne planner Saxil Tuxen (1885-1975).

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This print hung in Alfred Deakin's study in 'Llanarth', South Yarra. It is a print of Raphael's original cartoon for the Sistine Chapel tapestries, drawn by him and his workshop in 1515. The original cartoona are in the Victoria and Albert Museum.

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This study investigated the effect of reduced acetylcarnitine availability on oxidative metabolism during the transition from rest to steady-state exercise. Eight male subjects completed two randomised exercise trials at 68 % of the peak rate of O2 uptake (V̇O2,peak). On one occasion subjects ingested 1 g (kg body mass)−1 glucose 75 min prior to exercise (CHO), whereas the other trial acted as a control (CON). Muscle samples were obtained pre- and 75 min post-ingestion, and following 1 and 10 min of exercise. Plasma glucose and insulin were elevated (P < 0.05), and plasma free fatty acids (FFA) were lower at the onset of exercise in CHO. Acetylcarnitine (CON, 4.8 ± 1.8; CHO, 1.5 ± 0.9 mmol (kg dry mass (d.m.))−1, P < 0.05) and acetyl CoA (CON, 13.2 ± 2.3; CHO, 6.3 ± 0.6 μmol (kg d.m.)−1, P < 0.05) were lower at rest, whereas pyruvate dehydrogenase activation (PDHa) was greater in CHO compared with CON (CON, 0.78 ± 0.07; CHO, 1.44 ± 0.19 mmol min−1 (kg wet mass (w.m.))−1). Respiratory exchange ratio (RER) was significantly elevated during exercise in CHO. The acetyl groups increased at similar rates at the onset of exercise (1 min) and there was no difference in substrate phosphorylation as determined from lactate accumulation and phosphocreatine degradation between trials. Subsequently, oxidative metabolism during the transition from rest to steady-state exercise was not affected by prior carbohydrate ingestion. Although exercise resulted in the rapid activation of PDH in both trials, PDHa was greater at 1 min in CHO (CON, 2.36 ± 0.22; CHO, 2.91 ± 0.18 mmol min−1 (kg w.m.)−1). No differences in muscle metabolite levels and PDHa were observed after 10 min of moderate exercise between trials. In summary, at rest, carbohydrate ingestion induced multiple metabolic changes which included decreased acetylcarnitine availability and small increases in PDHa. The prior changes in PDHa and acetylcarnitine availability had no effect on substrate phosphorylation and oxidative metabolism at the onset of exercise. These data suggest that acetylcarnitine availability is unlikely to be the site of metabolic inertia during the transition from rest to steady-state moderate intensity exercise.

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The influence of allopurinol on urinary purine loss was examined in 7 active male subjects (age 24.9 ± 3.0 years, weight 82.8 ± 8.3 kg, V˙o2peak 48.1 ± 6.9 mL · kg−1 · min−1). These subjects performed, in random order, a trial with 5 days of prior ingestion of a placebo or allopurinol. Each trial consisted of eight 10-second sprints on an air-braked cycle ergometer and was separated by at least a week. A rest period of 50 seconds separated each repeated sprint. Forearm venous plasma inosine, hypoxanthine (Hx) and uric acid concentrations were measured at rest and during 120 minutes of recovery from exercise. Urinary inosine, Hx, xanthine, and uric acid excretion were also measured before and for 24 hours after exercise. During the first 120 minutes of recovery, plasma Hx concentrations, as well as the urinary Hx and xanthine excretion rates, were higher (P < .05) with allopurinol compared with the placebo trial. In contrast, plasma uric acid concentration and urinary uric acid excretion rates were lower (P < .05) with allopurinol. The total urinary excretion of purines (inosine + Hx + xanthine + uric acid) above basal levels was higher in the allopurinol trial compared with placebo. These results indicate that the total urinary purine excretion after intermittent sprint exercise was enhanced with allopurinol treatment. Furthermore, the composition of urinary purines was markedly affected by this drug.

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