The Relationship Between Remoteness and Trauma Deaths in Western Australia

2009 ◽  
Vol 67 (5) ◽  
pp. 910-914 ◽  
Author(s):  
Daniel M. Fatovich ◽  
Ian G. Jacobs
Keyword(s):  
Western Australia ◽  
Trauma Deaths ◽  
The Relationship

Factors that contribute to urban–rural gradients in risk of schizophrenia: Comparing Danish and Western Australian registers

2021 ◽  
pp. 000486742110096
Author(s):  
Oleguer Plana-Ripoll ◽  
Patsy Di Prinzio ◽  
John J McGrath ◽  
Preben B Mortensen ◽  
Vera A Morgan
Keyword(s):  
Confidence Interval ◽  
Western Australia ◽  
Urban Areas ◽  
Proportional Hazards ◽  
Cox Proportional Hazards ◽  
Hazard Ratio ◽  
Indigenous Status ◽  
Increased Risk ◽  
The Relationship ◽  
Western Australian

Introduction: An association between schizophrenia and urbanicity has long been observed, with studies in many countries, including several from Denmark, reporting that individuals born/raised in densely populated urban settings have an increased risk of developing schizophrenia compared to those born/raised in rural settings. However, these findings have not been replicated in all studies. In particular, a Western Australian study showed a gradient in the opposite direction which disappeared after adjustment for covariates. Given the different findings for Denmark and Western Australia, our aim was to investigate the relationship between schizophrenia and urbanicity in these two regions to determine which factors may be influencing the relationship. Methods: We used population-based cohorts of children born alive between 1980 and 2001 in Western Australia ( N = 428,784) and Denmark ( N = 1,357,874). Children were categorised according to the level of urbanicity of their mother’s residence at time of birth and followed-up through to 30 June 2015. Linkage to State-based registers provided information on schizophrenia diagnosis and a range of covariates. Rates of being diagnosed with schizophrenia for each category of urbanicity were estimated using Cox proportional hazards models adjusted for covariates. Results: During follow-up, 1618 (0.4%) children in Western Australia and 11,875 (0.9%) children in Denmark were diagnosed with schizophrenia. In Western Australia, those born in the most remote areas did not experience lower rates of schizophrenia than those born in the most urban areas (hazard ratio = 1.02 [95% confidence interval: 0.81, 1.29]), unlike their Danish counterparts (hazard ratio = 0.62 [95% confidence interval: 0.58, 0.66]). However, when the Western Australian cohort was restricted to children of non-Aboriginal Indigenous status, results were consistent with Danish findings (hazard ratio = 0.46 [95% confidence interval: 0.29, 0.72]). Discussion: Our study highlights the potential for disadvantaged subgroups to mask the contribution of urban-related risk factors to risk of schizophrenia and the importance of stratified analysis in such cases.

Characterization of damage and biotic factors associated with the decline of Eucalyptus wandoo in southwest Western Australia

2005 ◽  
Vol 35 (11) ◽  
pp. 2589-2602 ◽  
Author(s):  
Ryan J Hooper ◽  
K Sivasithamparam
Keyword(s):  
Western Australia ◽  
Partial Harvest ◽  
Foliage Density ◽  
Density Ratios ◽  
The Relationship ◽  
Mixed Age ◽  
Eucalyptus Wandoo

Crown decline of wandoo, Eucalyptus wandoo, in southwest Western Australia has escalated over the last 10 years, so very few unaffected stands remain. To assess the canopy-damage characteristics of trees in decline a destructive, partial-harvest method was used to sample branches in natural mixed-age stands. Necrosis of common cankers was closely associated with type-1 borer damage, characterized by "longitudinal" gallery structure on declining trees only. Cankers were found to be consistently more severe on declining trees, with decay regions affecting a greater proportion of sapwood tissue. Several infestations causing type-1 borer damage that varied in age were found on declining branches, providing evidence of cyclical damage events. Type-2 borer damage characterized by "ring-barking" gallery structure caused extensive damage in canopies, but was not always associated with decline. Interactions between foliage density and canker score showed that 17.8% and 63.1% of the variability in foliage-density ratios was accounted for in declining intermediate-health and unhealthy classes, respectively. The relationship was negligible for the healthy class (9.9%), providing strong evidence that cankers are causing foliage loss in declining canopies. Evidence suggests that an interaction between type-1 borer infestations and decay-causing fungi is responsible for the decline in E. wandoo wandoo canopies.

STRATEGIC AWARENESS AND THE PROCESS OF INNOVATION

1997 ◽  
Vol 05 (02) ◽  
pp. 193-208 ◽  
Author(s):  
ANDREW ATHERTON ◽  
PAUL HANNON
Keyword(s):  
Small Business ◽  
Western Australia ◽  
Small Businesses ◽  
External Environment ◽  
Customer Needs ◽  
Innovation Research ◽  
The Uk ◽  
The Relationship

Inherent to enterprising behaviour is the exercise of strategic awareness, a process of understanding and learning from the environment in which the entrepreneur and the small business operate. This paper notes that a growing recognition of high levels of change and uncertainty in the environment infers a need to increase small business understanding of what is changing and why. Strategic awareness is an individual and organisational capability, tailored to contextual needs and contingencies, that describes processes for identifying, understanding, interpreting and acting on events and influences. It also contributes to the process of innovation. Research in the UK, and later in Western Australia, identified a customer needs-focused and outwardly-directed approach to innovation that relies on understanding the external environment. This paper concludes by stressing the relationship between strategic awareness and innovation, and suggests that the nature of these processes demands a rethink in how we support and research small businesses and entrepreneurs.

Effectiveness of some copper compounds applied as foliar sprays in alleviating copper deficiency of wheat grown on copper-deficient soils of Western Australia

1990 ◽  
Vol 30 (5) ◽  
pp. 687 ◽  
Author(s):  
RF Brennan
Keyword(s):  
Grain Yield ◽  
Western Australia ◽  
Copper Deficiency ◽  
Relative Effectiveness ◽  
Grain Yields ◽  
Foliar Sprays ◽  
Cu Deficiency ◽  
Copper Compounds ◽  
The Difference ◽  
The Relationship

The effectiveness of copper oxychloride (CU2Cl(OH)3, 52% Cu) and chelated Cu (Cu-EDTA, 15% Cu) were compared with the effectiveness of copper sulphate (CuSO4, 25% Cu) as foliar sprays for alleviating Cu deficiency and obtaining maximum grain yields of wheat (1.93-2.5 t/ha). The experiments were conducted over 4 years at 4 sites in the Lake Grace and Newdegate districts, about 300-350 km south-east of Perth, Western Australia. Each source was sprayed at 6 or 7 rates of Cu to define the relationship between grain yield and the amount of foliar Cu applied for wheat grown on soils where Cu had not been previously applied. The levels of Cu sprayed in experiment 1 were 0, 21, 63, 125, 250, and 375 g/ha, and for experiments 2,3 and 4, the levels of Cu were 0, 25, 50, 100, 200, 400 and 800 g/ha. The relative effectiveness of foliar-applied chelated Cu and CU2Cl(OH)3, compared with CuSO4, was 1.72-2.24 and 0.47-0.63, respectively. Although the relative effectiveness of each product was different, similar quantities of each were required to achieve maximum wheat grain yield because of the difference in the Cu contents of each source of Cu. The amounts of Cu product sprayed for maximum grain yields of wheat varied within the ranges 0.9-1.8 kg/ha, 0.8-1.2 kg/ha and 0.8-1.8 kg/ha for CuSO4, chelated Cu and CU2Cl(OH)3, respectively.

Relationship Between Soil Properties and the Growth of Legumes on Acid Wodjil Soils in Western Australia

1985 ◽  
Vol 33 (3) ◽  
pp. 299 ◽  
Author(s):  
R Snowball ◽  
AD Robson
Keyword(s):  
Soil Properties ◽  
Western Australia ◽  
Surface Soil ◽  
Soil Layer ◽  
Trifolium Subterraneum ◽  
Chloride Content ◽  
Aluminium Toxicity ◽  
Low Ph ◽  
Surface Soil Layer ◽  
The Relationship

The relationship between vegetation and soil properties in part of the eastern wheatbelt of Western Australia was investigated. Soil in the Burracoppin Reserve supporting wodjil vegetation (Acacia beauverdiana, A. signata and Allocasuarina corniculata) had a very low pH in the 4.3-5.0 cm surface soil layer, a very low level of mineralizable N and a low chloride content compared to soils supporting Eucalyptus spp. All soils were low in exchangeable potassium and bicarbonate-extractable phosphorus. Acacia signata and Trifolium subterraneum were grown on a soil from Merredin supporting wodjil vegetation. Neither species responded markedly to lime when grown on the surface soil (0-5 cm). However, growth of both species on the subsoil (30-40 cm) was enhanced with the addition of lime. Increased growth of A. signata was probably associated with the alleviation of manganese toxicity which had been induced in this experiment. By contrast, increased growth of T. subterraneum was probably associated with the alleviation of aluminium toxicity.

Relation between plant size and severity of root rot in subterranean clover

1983 ◽  
Vol 23 (121) ◽  
pp. 126
Author(s):  
MJ Barbetti
Keyword(s):  
Root System ◽  
Western Australia ◽  
Root Rot ◽  
Lateral Root ◽  
Inverse Relationship ◽  
Subterranean Clover ◽  
Plant Size ◽  
Tap Root ◽  
The Relationship

Investigations were carried out in south-western Western Australia in 1977-78 to assess the relationship between dry weights of subterranean clover tops and roots and the severity of root rot. An inverse relationship was established between the severity of rotting of the tap root system and the plant top and the root dry weights. There was no relationship between the severity of root rot of the lateral root system and the plant top and root dry weights.

Age, Spawning Time, and Fecundity of Australian Herring (Arripis georgianus C. & V.) (Pisces : Arripidae) from the Waters around Rottnest Island, Western Australia

1978 ◽  
Vol 29 (5) ◽  
pp. 599 ◽  
Author(s):  
RCJ Lenanton
Keyword(s):  
Western Australia ◽  
Fish Length ◽  
Spawning Time ◽  
Males And Females ◽  
The Relationship

Scales and ovarian material were examined from Australian herring taken from the amateur line fishery in waters off Rottnest Island, W.A., over the period 28 March to 23 June 1973. The age-length distributions of a number of samples of both males and females are presented. Those fish sampled were predominantly 3+ years old. Resting or undeveloped ova were translucent and less than 0.1 mm in diameter. Developing ova were opaque and greater than 0.1 mm in diameter. Mature or ripe ova were translucent, slightly elliptical, unpigmented with a central oil globule, and were between 0.6 and 1.1 mm in diameter. Spawning was deduced to have occurred during early June. Most fish taken during the 1973 amateur fishery were in an immediate prespawning condition. Only one of the 516 females examined had ovaries containing ripe ova. The equation F = 298 L1.924 describes the relationship between estimated fecundity (F) and fish length (L).

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