The Cadia porphyry gold-copper district is the largest hydrothermal, intrusion-related gold deposit in eastern Australia. Discovered in 1992 by Newcrest Mining Limited, pre-mine resources in the ...district were in excess of 585 t Au and 2.35 Mt Cu. The Cadia district lies within shoshonitic subaqueous volcanic rocks of the Late Ordovician Molong Volcanic Belt in the eastern Lachlan Fold Belt (LFB) of New South Wales. An island arc tectonic setting is envisaged for the formation of these volcanic rocks, but the nature of the arc basement and geometry of the subduction zone(s) is debated. Mineralisation occurs in four principal porphyry deposits (Cadia Hill, Cadia Ridgeway, Cadia East/Cadia Far East and Cadia Quarry) as sheeted and stockwork quartz-sulfide veins, and locally as broadly stratabound disseminated mineralisation (Cadia East) and skarn (Big Cadia and Little Cadia). All of the porphyry deposits show a close spatial association with shoshonitic monzodiorite to quartz monzonite dykes and stocks of the Cadia Intrusive Complex (CIC). Gold-copper mineralisation is hosted by these intrusions and also by the enclosing Forest Reefs Volcanics (FRV) wall rocks. Hydrothermal alteration associated with mineralisation is potassic, which is overprinted by selectively pervasive propylitic and silica-albite assemblages. Petrological studies and major and trace element analysis of rocks of the CIC and FRV, as well as of other intrusions in the Cadia district that appear unrelated to mineralisation, have been conducted. Unaltered samples from the CIC are characterised by high K^sub 2^O contents (up to 6.5 wt%) and molecular K/Na ratios consistently >1, confirming the alkalic and shoshonitic nature of the complex. The CIC samples also fall just within the shoshonite field on Ce/Yb-Ta/Yb and Th/Yb-Ta/Yb plots, although immediately adjacent to the calc-alkaline field. The FRV are geochemically similar to the CIC, although lower in P^sub 2^O^sub 5^ and Ce (LREE). Dacitic and hornblende porphyry intrusions from within the district, but spatially unrelated to mineralisation, have a distinctive geochemical signature and are not shoshonitic in composition. The close spatial association between gold-copper mineralisation and the shoshonitic, monzonitic CIC argues strongly for a genetic link between the two. A similar association occurs at the economic Goonumbla porphyry gold-copper deposits in the eastern LFB, while sub-economic gold-copper mineralisation at Cargo and Copper Hill is associated with calc-alkaline quartz diorite and dacitic intrusions. The Cadia district is considered to be an excellent example of the association of alkaline, potassic magmas and gold-copper porphyry style mineralisation.PUBLICATION ABSTRACT
The fields of media archaeology and data sonification have not been without contestation regarding means and methods. However, in combination, these fields present an opportunity for a novel approach ...to the creation of media archaeologically informed sound-based art. This article discusses the artistic use of data sonification techniques and the need to balance the musification of data while maintaining a sense of the underlying data. The use of data sonification techniques within media archaeology to facilitate the organisation of sound is briefly discussed. A framework is presented for utilising data sonification to facilitate the organisation of sound within the lens of media archaeology inquiry. Such an approach provides a novel method in media archaeologically informed sound-based art that utilises the sound of the artefact as a method of expression between genealogically related forms of media. A sound installation developed by the authors is presented that critically examines the use of, and gives concrete form to, the framework and the ideas established in this article.
10 adolescent baseball players and 10 nonplayers made estimates of baseballs' arrival at the front edge of a home plate. Balls were projected 45 ft. by a pitching machine at speeds of 35, 40, 45, and ...50 mph. Subjects made estimates with the dominant and nondominant eye closest to the oncoming ball. Analysis indicated that players were no more accurate than nonplayers but did respond significantly earlier and with consistency. Eye dominance had no effect on performance.
Three superposed directions of north-south, east-northeast and west-northwest extension were accommodated during Cenozoic displacement on a complex array of high-angle faults in the Crescent Valley ...region of north-central Nevada. Contemporary N66°W extension was initiated at about 9 Ma and is responsible for the accumulation of 1.5 to 2.5 km of sedimentary and volcanic rocks in spatially restricted half-grabens during the development of present mountain ranges. Earlier N75°E extension commenced at about 17 Ma and was accompanied by deposition of volcanic and sedimentary sequences that range up to several hundred meters thick. These rocks show only minor offset on syndepositional faults and minor thickness variations across the region. The earliest phase of extension, N10°E, started at or before 34 Ma during localized accumulation of 1.5 to as much as 4 km of volcanic tuff and sedimentary rocks in a west-northwest-trending fault-bounded volcanic center. Outside of the structural depocenter, coeval volcanic and sedimentary rocks are only hundreds of meters thick, with only minor lateral variations. All structures in the fault array were active during each period of extensional deformation. Prominent basin and range structures and topography did not evolve until late Miocene to Holocene extension, suggesting that earlier magnitudes of extension were modest and not associated with high strain-rates. Three-dimensional fault displacement models illustrate that the extensional faults of the Crescent Valley fault system are kinematically coordinated over length scales of kilometers to tens of kilometers. The fault network, consisting of northwest, north-northwest, north-south, north-northeast, and northeast oriented normal and oblique-slip structures, displays substantial fluctuations in the along-strike displacement on individual faults. Cross sections, constructed using geologic maps, gravity inversion depth to basement models, a seismic reflection profile, and recent west-northwest extension direction, indicate that more than 90 percent of the along-strike variations in the magnitude of fault offset is accommodated by displacement transfer within the fault system. The remaining deformation is likely attributed to uncertainty in the model, but may represent non-recoverable strain accumulation within fault blocks. Our analysis indicates that in order to completely conserve the fault displacement field, fault systems of length scales greater than 50 km are needed.
Investigates the effect of secondary school physical education on fitness load: the product of the mean heart rate above threshold (144 bpm) and the time duration of heart rate above that threshold. ...Highly and moderately skilled students achieved fitness load more frequently than their lower skilled colleagues. (GLR)
Papua New Guinea Dunham, Paul
Journal of physical education, recreation & dance,
12/1/1987, Letnik:
58, Številka:
9
Journal Article
Recenzirano
The physical education opportunities for students in Papua New Guinea are discussed. Because the country has limited financial and human resources, the strategies for developing physical education ...curricula have been limited. A historical overview is presented.
Evaluation for Excellence Dunham, Paul
Journal of physical education, recreation & dance,
19/8/1/, Letnik:
57, Številka:
6
Journal Article
Recenzirano
Despite its relevance to student progress and emphasis in teacher education programs, research has shown that evaluation is not conducted regularly in physical education courses. A systematic program ...of evaluation is outlined.
This thesis was motivated by the recognition of the importance of the underlying role that genetic variation plays in disease and how this genetic variation is modulated by evolution; specifically, ...genetic drift and selection. I have sought to understand how genetic diversity is modulated by population bottleneck events at the cellular level and the effects of evolutionary forces on genetic diversity. I chose two very distinct systems, mitochondria and viruses, to address these topics and I also developed a new inexpensive and high-throughput sequencing sample preparation procedure for these research systems. Mitochondria are central for cellular energy, and for signaling pathways involved in stem cell proliferation, migration, and apoptosis. Mitochondrial heteroplasmy, (intra- and inter-cellular genetic diversity), is known to cause stem cell dysfunction in self-renewal and long-term proliferation. Thus, metazoans develop from a single cell bottleneck event that acts to homogenize the mitochondrial population, which significantly minimizes the risk of heteroplasmy. The freshwater asexual planarian Schmidtea mediterranea does not undergo a single cell bottleneck event, but rather reproduces by transverse fission or multicellular inheritance. We sought to understand the effects of lacking a single cell bottleneck event and found that high levels of genetic diversity and haplotypes exist within individual planaria, and that mitochondrial populations varied spatially across the planarian body. As a result we have proposed a cellular model incorporating regeneration events to explain these patterns of intra-individual genetic diversity. Unlike the common homogeneous genomic state of mitochondria, the population of zucchini yellow mosaic virus contains high levels of genetic diversity associated with the lack of proofreading activity of RNA polymerase, high replication rates, and large population size. It is commonly assumed that the viral population will be subjected to substantial genetic bottlenecks as it moves systemically through the plant. Thus we sequenced to deep coverage 23 leaves growing sequentially along a vine, and one side branch leaf. It was determined that bottleneck events associated with systemic movement are not severe enough to reduce the viral population and that viral diversity is circulated in the phloem sap during infection. In addition we found variants clustered within the CI protein, which has implications for viral movement and infection, which is populating new niches during systemic movement or host immune evasion. While pursuing the mitochondrial and viral studies, I optimized and developed a new sample preparation procedure for next generation sequencing. This sample preparation can be applied to difficult samples that would normally yield very little DNA. In addition the procedure is high-throughput, and very cost effective. These studies, although very different in nature, determined that the extent of evolutionary pressures affecting genetic diversity as a result of cellular level bottleneck events is not straightforward. These studies described the patterns and amount of intra-individual genetic diversity and elucidated how this diversity is affected by the absence of a population bottleneck and regeneration in planaria or the presence of population bottlenecks imposed by the host plant during systemic movement. Furthermore, this data offers a deeper understanding of the dynamics of population movement on genetic diversity, either across the planarian body or viral invasion between tissues and cells. Thus, in both systems intra-individual genetic diversity is one of the contributing factors to disease and dysfunction, therefore understanding the patterns and extent of genetic diversity through sequencing is important to aid in the development of disease management and system specific coping mechanisms.
Thesis (Ed. D.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains xxvi, 286 p. Includes abstract. Includes bibliographical references (p. ...266-286).
Although Jacques Ellul is well known in both theological and sociological circles, his work has rarely been examined as a dialectical whole. Examining four seminal works, this study elucidates and ...discusses the relationship between the sociological reality of technique and the theological truth of the Bible as found in Ellul. First of all, this study asks what are the theological and sociological characterizations made by Ellul in The Technological Society, The Technological System, The Meaning of the City, and Apocalypse ? Second, in what way do those characterizations ‘fit together,’ i.e., follow the dialectical structure of point and counterpoint, question and answer? Third, what meaning may be extracted through a sustained analysis and juxtaposition of Ellul's theological and sociological works? This study found an explicit connection between Ellul's characterization of technique and the Bible as follows: (1) The character, growth and spread of technique correspond to the stories of Cain, Nimrod and Babel. (2) The biblical city of Babylon corresponds to the effects of technique, namely, the state, the economy, and human techniques. (3) Technological progress corresponds to the theological account of the Apocalypse. (4) Jesus Christ is the dialectical pole of technique. As a result of the findings, this study makes four conclusions: (1) Technique is a spiritual project. (2) The rift between technique and God hinges on the metaphysical questions of imperative, mediation, determination, and discrimination. (3) Technological progress, though real, is not true. (4) Jesus Christ, as the opposite of technique, is the meaning of technology.
