Cooperative Research Centre

About: Cooperative Research Centre is a based out in . It is known for research contribution in the topics: Population & Sea ice. The organization has 7633 authors who have published 8607 publications receiving 429721 citations.

Gene expression profiling of muscle tissue in Brahman steers during nutritional restriction

Abstract: Expression profiling using microarrays allows for the detailed characterization of the gene networks that regulate an animal's response to environmental stresses. During nutritional restriction, processes such as protein turnover, connective tissue remodeling, and muscle atrophy take place in the skeletal muscle of the animal. These processes and their regulation are of interest in the context of managing livestock for optimal production efficiency and product quality. Here we expand on recent research applying complementary DNA (cDNA) microarray technology to the study of the effect of nutritional restriction on bovine skeletal muscle. Using a custom cDNA microarray of 9,274 probes from cattle muscle and s.c. fat libraries, we examined the differential gene expression profile of the LM from 10 Brahman steers under three different dietary treatments. The statistical approach was based on mixed-model ANOVA and model-based clustering of the BLUP solutions for the gene x diet interaction effect. From the results, we defined a transcript profile of 156 differentially expressed array elements between the weight loss and weight gain diet substrates. After sequence and annotation analyses, the 57 upregulated elements represented 29 unique genes, and the 99 downregulated elements represented 28 unique genes. Most of these co-regulated genes cluster into groups with distinct biological function related to protein turnover and cytoskeletal metabolism and contribute to our mechanistic understanding of the processes associated with remodeling of muscle tissue in response to nutritional stress.

Exploratory factors influencing information and communication technology diffusion and adoption within Australian construction organizations: a micro analysis

Abstract: The purpose of this study was to explore and identify factors affecting adoption and implementation of information and communication technology (ICT) in large ICT‐experienced Australian construction organizations. During 2002 the researchers undertook an online survey, supplemented by a hardcopy collection option, to gather data from three major construction organizations with many years experience with implementing and adopting IT. The analysis concentrated on a common class of ICT adopted across the three organizations so that factor analysis could be validly undertaken. Results identified 11 factors that were found to influence ICT diffusion and adoption by the organizations that were grouped into management, individual, technology and workplace environment categories. These concurred with theory from the change management, innovation diffusion and organizational learning literature. Further, in‐depth qualitative analysis through case studies (beyond the scope of this paper) also helped to explain and make sense of the results. The results help to better explain human related factors in particular in terms of the broader and emerging literature of organizational learning and innovation adoption with a clear focus on how the people‐side of ICT diffusion and adoption is undertaken. This ICT diffusion and adoption study is undertaken at the firm‐level (micro analysis) as opposed to the industry level (macro analysis) and so provides insights into the interplay between diffusion and adoption concepts.

Seed banks of a southern Australian wetland: the influence of water regime on the final floristic composition

Abstract: The sediments of a southern Australian wetland complex were investigated to determine the germinable seed bank. The number of seeds ranged from 22,000 to 78,000 m−2. Non-metric multi dimensional scaling (NMS) ordination based upon species composition separated the four basins but each contained the representatives of the major functional groups: terrestrial, amphibious and submerged. To test the influence of water regime on the final floristic composition derived from these seed banks, sediments were positioned at three elevations (0, 30 and 80 cm) and subjected to three hydrologic regimes (static water level, and draw down rates of 2.5 and 7 cm week−1). Species compositions were analysed after 98 days via ordination. Despite significant differences in the initial seed bank composition the final floristic compositions were correlated with the water regime and independent of the initial seed bank composition. Species groups were segregated on a basis of whether sediments were continuously exposed to the atmosphere, the rate of draw down and the water depth. Moist sediments were dominated by species belonging to all the main functional groups. Sediments subject to rapid drying were dominated by terrestrial species whereas sediments that were flooded for the majority of the time were dominated by submerged species.